Liquid container

Abstract

One of the objectives is to provide a technology that suppresses the possibility of short circuits occurring between terminals. [Solution] The substrate has some of its contact parts arranged in a first region and the remaining contact parts arranged in a second region. The some contact parts include the first, second, third, and fourth contact parts, and the remaining contact parts include the fifth contact part. The some contact parts and the remaining contact parts are arranged asymmetrically with respect to a first imaginary line.

Description

Technical Field

[0001] The present disclosure relates to the technology of a substrate, a liquid container, a printing system, and use of a substrate or a liquid container. Background Art

[0002] Conventionally, for an ink cartridge detachably mounted to a printing apparatus, there is known a technology of detecting mounting of the ink cartridge using a mounting detection terminal included in a terminal group (Patent Document 1). The terminal group is composed of four mounting detection terminals including a terminal to which a high voltage higher than a power supply voltage is applied, and five memory terminals. The mounting detection terminals are arranged at four corners of the terminal group so as to surround the memory terminals. In Patent Document 1, when it is detected that the mounting detection terminal is electrically connected to an apparatus-side terminal, the printing apparatus determines that the ink cartridge is mounted in the printing apparatus.

[0003] Also, for an ink cartridge detachably mounted to a printing apparatus, there is known a technology of detecting mounting of the ink cartridge using a memory terminal (Patent Document 2). A storage device such as a memory provided in the ink cartridge outputs a response signal for notifying that it is connected to a host device such as a printing apparatus to the host terminal via any one of a reset terminal, a clock terminal, and a data terminal. The host device determines whether the storage device is connected to the host device based on the response signal from the storage device without using a terminal dedicated for connection detection. Prior Art Documents Patent Documents

[0004] Patent Document 1 International Publication No. 2012-029311 Patent Document 2 Japanese Unexamined Patent Publication No. 2011-170740 Summary of the Invention Problem to be Solved by the Invention

[0005] However, Patent Documents 1 and 2 do not address the detection of short circuits between memory terminals. Patent Document 1 states that if a short circuit occurs between memory terminals, even if the printer determines that the ink cartridge is installed, the printer may not function properly, or reading and writing to the memory of the ink cartridge may not be possible. Patent Document 2 states that if a short circuit occurs between memory terminals, the memory may not be able to output its intended signal to the printer, and the printer may not be able to determine that the memory is properly connected to the printer.

[0006] This disclosure was made to solve the above-mentioned problems, and one of its objectives is to provide a technology that can suppress the possibility of short circuits occurring between terminals in liquid storage containers such as ink cartridges. Alternatively, one of its objectives is to provide a technology that can detect short circuits if they occur between at least some terminals. This disclosure achieves at least one of the above-mentioned objectives. [Means for solving the problem]

[0007] According to a first embodiment of the present disclosure, a substrate is provided which is mounted on a printing apparatus comprising a print head, a liquid introduction unit for introducing liquid into the print head, a storage unit for housing a liquid storage container and provided with the liquid introduction unit, and a plurality of device-side terminals provided in the storage unit, and which is configured to contact the plurality of device-side terminals. The substrate comprises a base material, a device provided on the base material, and a plurality of terminals provided on the base material, wherein the plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, the first terminal being connected to the device and including a first contact portion to contact a corresponding first device-side terminal among the plurality of device-side terminals, the second terminal being connected to the device and including a second contact portion to contact a corresponding second device-side terminal among the plurality of device-side terminals, the third terminal being connected to the device and including a third contact portion to contact a corresponding third device-side terminal among the plurality of device-side terminals, the fourth terminal being connected to the device and including a fourth contact portion to contact a corresponding fourth device-side terminal among the plurality of device-side terminals, and the fifth terminal being connected to the device and including a fifth contact portion to contact a corresponding fifth device-side terminal among the plurality of device-side terminals. The first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal. In a plan view, two orthogonal lines are defined as the first and second virtual lines. When all contacts of all terminals provided on the substrate are projected onto the second virtual line, all contacts are projected to different positions. The first virtual line passes midway between the two furthest projection positions of all the contacts. With respect to the first virtual line, one region is defined as the first region and the other as the second region. Some of the contacts are located in the first region, and the remaining contacts are located in the second region. The some contacts include the first, second, third, and fourth contacts, and the remaining contacts include the fifth contact. The some contacts and the remaining contacts are arranged asymmetrically with respect to the first virtual line.

[0008] According to a second embodiment of the present disclosure, a substrate is provided which is mounted on a printing apparatus comprising a print head, a liquid introduction unit for introducing liquid into the print head, a storage unit for housing a liquid storage container and provided with the liquid introduction unit, and a plurality of device-side terminals provided in the storage unit, and which is configured to contact the plurality of device-side terminals. The substrate comprises a base material, a device provided on the base material, and a plurality of terminals provided on the base material, wherein the plurality of terminals includes a first terminal connected to the device and including a first contact portion to contact a corresponding first device-side terminal among the plurality of device-side terminals, and a group of other terminals, wherein the group of other terminals includes at least a second terminal connected to the device and including a second contact portion to contact a corresponding second device-side terminal among the plurality of device-side terminals, and a third terminal connected to the device and including a third contact portion to contact a corresponding third device-side terminal among the plurality of device-side terminals, wherein the second terminal is short-circuited with at least one of the other terminals excluding the second terminal. Used to detect whether or not, two orthogonal lines are defined as the first and second virtual lines, and when all contact portions of all terminals provided on the substrate are projected onto the second virtual line, all contact portions are projected to different positions, the first virtual line passes midway between the two furthest projection positions of all the contact portions, and when one region is defined as the first region and the other as the second region with respect to the first virtual line, some of the contact portions are located in the first region and the remaining contact portions are located in the second region, the some contact portions include the second and third contact portions, the remaining contact portions include the first contact portions, and the some contact portions and the remaining contact portions are arranged asymmetrically with respect to the first virtual line.

[0009] A third embodiment of the present disclosure provides a substrate that is mounted on a printing apparatus comprising a print head, a liquid introduction unit for introducing liquid into the print head, a storage unit that houses a liquid storage container and is provided with the liquid introduction unit, and a plurality of device-side terminals provided in the storage unit, and is configured to contact the plurality of device-side terminals. The plurality of device-side terminals include a first device-side terminal, a second device-side terminal, a third device-side terminal, a fourth device-side terminal, and a fifth device-side terminal. In a plan view, two orthogonal lines are defined as the first and second virtual lines. When the contact portions of the first device-side terminal, the second device-side terminal, the third device-side terminal, the fourth device-side terminal, and the fifth device-side terminal are projected onto the second virtual line, their projection positions are defined as the first projection position, the second projection position, the third projection position, the fourth projection position, and the fifth projection position, respectively. When the contact portions of all device-side terminals are projected onto the second virtual line, the contact portions of all device-side terminals are projected onto different positions. The first imaginary line passes midway between the two furthest projection positions of the projection lines, and with respect to the first imaginary line, one region is designated as the first region and the other as the second region. In this configuration, some of the contact portions of the device-side terminals are located in the first region, and the remaining contact portions of the device-side terminals are located in the second region. The partial contact portions of the device-side terminals include the contact portions of the first, second, third, and fourth device-side terminals, and the remaining contact portions of the device-side terminals include the contact portion of the fifth device-side terminal. The partial contact portions of the device-side terminals and the remaining contact portions of the device-side terminals are arranged asymmetrically with respect to the first imaginary line.This substrate comprises a base material, a device provided on the base material, and a plurality of terminals provided on the base material, wherein the plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, the first terminal being connected to the device and including a first contact portion which, when mounted on the printing apparatus, should contact a corresponding first device-side terminal among a plurality of device-side terminals of the printing apparatus, the second terminal being connected to the device and including a second contact portion which, when mounted on the printing apparatus, should contact a corresponding second device-side terminal among the plurality of device-side terminals, and the third terminal being connected to the device and the printing The terminal includes a third contact portion which, when mounted on the device, is to contact the corresponding third device-side terminal among the plurality of device-side terminals; the fourth terminal includes a fourth contact portion which, when connected to the device and mounted on the printing apparatus, is to contact the corresponding fourth device-side terminal among the plurality of device-side terminals; the fifth terminal includes a fifth contact portion which, when connected to the device and mounted on the printing apparatus, is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals; and the first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal.

[0010] A fourth embodiment of the present disclosure provides a liquid storage container to be attached to the storage portion of a printing apparatus, which comprises a print head, a liquid introduction portion for introducing liquid into the print head, a storage portion provided with the liquid introduction portion, and a plurality of device-side terminals provided in the storage portion. The liquid container comprises a liquid container capable of containing liquid, a liquid supply unit attached to the liquid introduction section of the printing apparatus and having a liquid supply port for supplying liquid from the liquid container to the liquid introduction section, a device, and a plurality of terminals, the plurality of terminals including at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, the first terminal being connected to the device and including a first contact portion to contact a corresponding first device-side terminal among the plurality of device-side terminals, the second terminal being connected to the device and including a second contact portion to contact a corresponding second device-side terminal among the plurality of device-side terminals, the third terminal being connected to the device and including a third contact portion to contact a corresponding third device-side terminal among the plurality of device-side terminals, the fourth terminal being connected to the device and including a fourth contact portion to contact a corresponding fourth device-side terminal among the plurality of device-side terminals, and the fifth terminal being connected to the device and including a corresponding first device-side terminal among the plurality of device-side terminals The first terminal includes a fifth contact portion that is to contact a corresponding fifth device terminal, and the first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal. In a plan view, two orthogonal lines are defined as the first and second virtual lines, and when all the contact portions of all the terminals provided on the liquid container are projected onto the second virtual line, all the contact portions are projected to different positions, the first virtual line passes midway between the two furthest projection positions of all the contact portions, and with respect to the first virtual line, one region is defined as the first region and the other as the second region, some of the contact portions are located in the first region and the remaining contact portions are located in the second region, the some contact portions include the first, second, third, and fourth contact portions, and the remaining contact portions include the fifth contact portion, and the some contact portions and the remaining contact portions are arranged asymmetrically with respect to the first virtual line.

[0011] A fifth embodiment of the present disclosure provides a liquid storage container to be attached to the storage portion of a printing apparatus, which comprises a print head, a liquid introduction portion for introducing liquid into the print head, a storage portion provided with the liquid introduction portion, and a plurality of device-side terminals provided in the storage portion. The liquid container comprises a liquid container capable of containing liquid, a liquid supply unit attached to the liquid introduction section of the printing apparatus and having a liquid supply port for supplying liquid from the liquid container to the liquid introduction section, a device, and a plurality of terminals, the plurality of terminals including a first terminal connected to the device and including a first contact portion to contact a corresponding first device-side terminal among the plurality of device-side terminals of the printing apparatus, and a group of other terminals, the group of other terminals including at least a second terminal connected to the device and including a second contact portion to contact a corresponding second device-side terminal among the plurality of device-side terminals, and a third terminal connected to the device and including a third contact portion to contact a corresponding third device-side terminal among the plurality of device-side terminals, the second terminal being the second among the group of other terminals This method is used to detect whether or not there is a short circuit with at least one of the other terminals excluding the terminals, and two orthogonal lines are defined as the first and second virtual lines. When all contacts of all terminals provided on the liquid container are projected onto the second virtual line, all contacts are projected to different positions. The first virtual line passes midway between the two furthest projection positions of all the contacts. With respect to the first virtual line, one region is defined as the first region and the other as the second region. Some of the contacts are located in the first region, and the remaining contacts are located in the second region. The some contacts include the second and third contacts, and the remaining contacts include the first contacts. The some contacts and the remaining contacts are arranged asymmetrically with respect to the first virtual line.

[0012] According to a sixth embodiment of the present disclosure, a liquid storage container is provided which is attached to the storage portion of a printing apparatus comprising a print head, a liquid introduction portion for introducing liquid into the print head, a storage portion provided with the liquid introduction portion, and a plurality of device-side terminals provided in the storage portion. The plurality of device-side terminals include a first device-side terminal, a second device-side terminal, a third device-side terminal, a fourth device-side terminal, and a fifth device-side terminal. In a plan view, two orthogonal lines are defined as the first and second virtual lines. When the contact portions of the first device-side terminal, the second device-side terminal, the third device-side terminal, the fourth device-side terminal, and the fifth device-side terminal are projected onto the second virtual line, their projection positions are defined as the first projection position, the second projection position, the third projection position, the fourth projection position, and the fifth projection position, respectively. When the contact portions of all device-side terminals are projected onto the second virtual line, the contact portions of all device-side terminals are projected onto different positions. The first imaginary line passes midway between the two furthest projection positions, and with respect to the first imaginary line, one region is designated as the first region and the other as the second region. In this configuration, some of the contact portions of the device-side terminals are located in the first region, and the remaining contact portions are located in the second region. The partial contact portions of the device-side terminals include the contact portions of the first, second, third, and fourth device-side terminals, and the remaining contact portions of the device-side terminals include the contact portion of the fifth device-side terminal. The partial contact portions of the device-side terminals and the remaining contact portions of the device-side terminals are arranged asymmetrically with respect to the first imaginary line.The liquid container comprises a liquid container capable of holding liquid, a liquid supply unit attached to the liquid introduction section of the printing apparatus and having a liquid supply port for supplying liquid from the liquid container to the liquid introduction section, a device, and a plurality of terminals, the plurality of terminals including at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, the first terminal being connected to the device and including a first contact portion which, when attached to the printing apparatus, should contact the corresponding first device-side terminal among the plurality of device-side terminals of the printing apparatus, the second terminal being connected to the device and including a second contact portion which, when attached to the printing apparatus, should contact the corresponding second device-side terminal among the plurality of device-side terminals The third terminal includes a third contact portion which is connected to the device and, when mounted on the printing apparatus, contacts the corresponding third device-side terminal among the plurality of device-side terminals; the fourth terminal includes a fourth contact portion which is connected to the device and, when mounted on the printing apparatus, contacts the corresponding fourth device-side terminal among the plurality of device-side terminals; the fifth terminal includes a fifth contact portion which is connected to the device and, when mounted on the printing apparatus, contacts the corresponding fifth device-side terminal among the plurality of device-side terminals; and the first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal.

[0013] According to the seventh form of this disclosure, a printing system is provided.This printing system comprises a printing apparatus, a liquid container capable of containing liquid, a liquid supply unit having a liquid supply port, a device, a plurality of terminals, and a substrate on which the device and the plurality of terminals are provided. The printing apparatus comprises a print head, a liquid introduction unit for introducing liquid to the print head, and a plurality of device-side terminals. The liquid supply port supplies liquid from the liquid container to the liquid introduction unit of the printing apparatus. The substrate is mounted on the printing apparatus and configured to contact the plurality of device-side terminals. The plurality of terminals comprises at least a first terminal and... The device includes a second terminal, a third terminal, a fourth terminal, and a fifth terminal, wherein the first terminal is connected to the device and includes a first contact portion which is to contact a corresponding first device-side terminal among the plurality of device-side terminals, the second terminal is connected to the device and includes a second contact portion which is to contact a corresponding second device-side terminal among the plurality of device-side terminals, the third terminal is connected to the device and includes a third contact portion which is to contact a corresponding third device-side terminal among the plurality of device-side terminals, and the fourth terminal is connected to the device and includes a third contact portion which is to contact a corresponding third device-side terminal among the plurality of device-side terminals The fifth terminal includes a fourth contact portion which is to contact the corresponding fourth device-side terminal, the fifth terminal is connected to the device and includes a fifth contact portion which is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals, the first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal, and in a plan view, two orthogonal lines are defined as the first and second virtual lines, and when all contact portions of all terminals provided on the substrate are projected onto the second virtual line, all contact portions are in different positions When projected, the first imaginary line passes midway between the two furthest projection positions of all the contact portions, and with respect to the first imaginary line, one region is designated as the first region and the other as the second region, some of the contact portions are located in the first region and the remaining contact portions are located in the second region, the some contact portions include the first contact portion, the second contact portion, the third contact portion and the fourth contact portion, the remaining contact portions include the fifth contact portion, and the some contact portions and the remaining contact portions are arranged asymmetrically with respect to the first imaginary line.

[0014] According to an eighth embodiment of the present disclosure, a printing system is provided. The printing system comprises a printing apparatus and a liquid container mounted on the printing apparatus, the printing apparatus comprising a print head, a liquid introduction unit for introducing liquid into the print head, and a plurality of device-side terminals, the liquid container comprising a liquid container capable of containing liquid, a liquid supply unit having a liquid supply port for supplying liquid from the liquid container to the liquid introduction unit of the printing apparatus, a device, and a plurality of terminals, the plurality of terminals including at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, and the first terminal The child includes a first contact portion which is connected to the device and is to contact a corresponding first device-side terminal among the plurality of device-side terminals; the second terminal includes a second contact portion which is connected to the device and is to contact a corresponding second device-side terminal among the plurality of device-side terminals; the third terminal includes a third contact portion which is connected to the device and is to contact a corresponding third device-side terminal among the plurality of device-side terminals; and the fourth terminal includes a fourth contact portion which is connected to the device and is to contact a corresponding fourth device-side terminal among the plurality of device-side terminals. The fifth terminal is connected to the device and includes a fifth contact portion which is to contact the corresponding fifth device terminal among the plurality of device terminals, and the first terminal is used to detect whether the first terminal is short-circuited to at least one of the second terminal, the third terminal, and the fourth terminal, and in a plan view, two orthogonal lines are defined as the first and second virtual lines, and when all the contact portions of all the terminals provided on the liquid container are projected onto the second virtual line, all the contact portions are projected to different positions, and all The first imaginary line passes midway between the two furthest projection positions of the contact portions, and with respect to the first imaginary line, one region is designated as the first region and the other as the second region. In this configuration, some of the contact portions are located in the first region, and the remaining contact portions are located in the second region. The partial contact portions include the first, second, third, and fourth contact portions, and the remaining contact portions include the fifth contact portion. The partial contact portions and the remaining contact portions are arranged asymmetrically with respect to the first imaginary line.

[0015] According to the ninth embodiment of this disclosure, the use of a substrate is provided which is mounted on a printing apparatus comprising a print head, a liquid introduction unit for introducing liquid into the print head, a storage unit for housing a liquid storage container and provided with the liquid introduction unit, and a plurality of device-side terminals provided in the storage unit, and which is configured to contact the plurality of device-side terminals. The use of this substrate comprises a base material, a device provided on the base material, and a plurality of terminals provided on the base material, wherein the plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, the first terminal being connected to the device and including a first contact portion to contact a corresponding first device-side terminal among the plurality of device-side terminals, the second terminal being connected to the device and including a second contact portion to contact a corresponding second device-side terminal among the plurality of device-side terminals, the third terminal being connected to the device and including a third contact portion to contact a corresponding third device-side terminal among the plurality of device-side terminals, the fourth terminal being connected to the device and including a fourth contact portion to contact a corresponding fourth device-side terminal among the plurality of device-side terminals, and the fifth terminal being connected to the device and including a fifth contact portion to contact a corresponding fifth device-side terminal among the plurality of device-side terminals. The first terminal is used to detect whether or not it is short-circuited with at least one of the second, third, and fourth terminals. In a plan view, two orthogonal lines are defined as the first and second virtual lines. When all contacts of all terminals provided on the substrate are projected onto the second virtual line, all contacts are projected to different positions. The first virtual line passes midway between the two furthest projection positions of all the contacts. With respect to the first virtual line, one region is defined as the first region and the other as the second region. Some of the contacts are located in the first region, and the remaining contacts are located in the second region. The some contacts include the first, second, third, and fourth contacts, and the remaining contacts include the fifth contact. The some contacts and the remaining contacts are arranged asymmetrically with respect to the first virtual line.

[0016] A tenth embodiment of the present disclosure provides the use of a liquid storage container attached to the housing of a printing apparatus, the printing apparatus comprising a print head, a liquid introduction unit for introducing liquid into the print head, a housing unit provided with the liquid introduction unit, and a plurality of device-side terminals provided in the housing unit. The use of this liquid storage container comprises a liquid housing capable of containing liquid, a liquid supply unit attached to the liquid introduction unit of the printing apparatus and having a liquid supply port for supplying liquid from the liquid housing unit to the liquid introduction unit, a device, and a plurality of terminals, wherein the plurality of terminals include at least a first terminal and a third terminal. The device includes two terminals, a third terminal, a fourth terminal, and a fifth terminal, wherein the first terminal is connected to the device and includes a first contact portion which is to contact the corresponding first device terminal among the plurality of device terminals, the second terminal is connected to the device and includes a second contact portion which is to contact the corresponding second device terminal among the plurality of device terminals, the third terminal is connected to the device and includes a third contact portion which is to contact the corresponding third device terminal among the plurality of device terminals, and the fourth terminal is connected to the device and includes the corresponding first device terminal among the plurality of device terminals The fifth terminal includes a fourth contact portion which is to contact a corresponding fourth device-side terminal, the fifth terminal is connected to the device and includes a fifth contact portion which is to contact a corresponding fifth device-side terminal among the plurality of device-side terminals, the first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal, and in a plan view, two orthogonal lines are defined as the first and second virtual lines, and when all contact portions of all terminals provided on the liquid container are projected onto the second virtual line, all contact portions are in different positions When projected onto a plane, the first imaginary line passes midway between the two furthest projection positions of all the contact portions, and with respect to the first imaginary line, one region is designated as the first region and the other as the second region, some of the contact portions are located in the first region and the remaining contact portions are located in the second region, the some contact portions include the first, second, third, and fourth contact portions, the remaining contact portions include the fifth contact portion, and the some contact portions and the remaining contact portions are arranged asymmetrically with respect to the first imaginary line. [BRIEF DESCRIPTION OF THE DRAWINGS]

[0017] [Figure 1] A perspective view illustrating the hardware configuration of a printing system. [Figure 2] An explanatory diagram illustrating the schematic configuration of a printing system. [Figure 3] A first perspective view illustrating the configuration of a liquid container. [Figure 4] A second perspective view illustrating the configuration of a liquid container. [Figure 5] A first diagram illustrating the configuration of a substrate. [Figure 6] A second diagram illustrating the configuration of a substrate. [Figure 7A] A diagram illustrating a state where a liquid container is mounted on a carriage. [Figure 7B] A first diagram illustrating a connection mechanism. [Figure 7C] A second diagram illustrating a connection mechanism. [Figure 8] A diagram schematically illustrating the electrical configuration of a printing system. [Figure 9] A diagram illustrating the functional configuration of a printing apparatus together with one liquid container. [Figure 10A] A flowchart of processing executed by a printing apparatus in connection state determination processing. [Figure 10B] A flowchart of processing executed by a device in connection state determination processing. [Figure 11A] A timing chart when a printing apparatus outputs a request signal. [Figure 11B] A timing chart when a device outputs a first response signal and a second response signal. [Figure 11C] A diagram illustrating details of the first response signal. [Figure 11D] A diagramA diagram illustrating details of the second response signal. [Figure 12] A diagram illustrating an outline of connection state determination processing executed by a main control unit. [Figure 13A] A first timing chart of connection state determination processing. [Figure 13B] A second timing chart of connection state determination processing. [Figure 14A] The third timing chart for the connection status determination process. [Figure 14B] The fourth timing chart for the connection status determination process. [Figure 15] Fifth timing chart for the connection status determination process. [Figure 16A] The sixth timing chart for the connection status determination process. [Figure 16B] The seventh timing chart for the connection status determination process. [Figure 17] The eighth timing chart for the connection status determination process. [Figure 18A] The ninth timing chart for the connection status determination process. [Figure 18B] The 10th timing chart for the connection status determination process. [Figure 19] The 11th timing chart for the connection status determination process. [Figure 20A] The 12th timing chart for the connection status determination process. [Figure 20B] The 13th timing chart for the connection status determination process. [Figure 20C] A diagram illustrating other specific examples of the connection status determination process. [Figure 21A] A diagram illustrating a substrate as another embodiment 1. [Figure 21B] This figure shows examples of the arrangements shown in No. 2 and No. 3 of Figure 21A. [Figure 22] A diagram showing two patterns of substrates as another embodiment 2. [Figure 23] A diagram showing two patterns of substrates as another embodiment 3. [Figure 24] A diagram showing two patterns of substrates as another embodiment 4. [Figure 25] A diagram showing two patterns of substrates as another embodiment 4. [Figure 26] A diagram illustrating a substrate as another embodiment 5. [Figure 27] A diagram showing two other substrate patterns as embodiment 6. [Figure 28] A diagram showing a substrate as another embodiment 7. [Figure 29] A perspective view showing a liquid container as another embodiment 1. [Figure 30] A perspective view showing a liquid container as another embodiment 2. [Figure 31] Enlarged view of the area around the substrate of the liquid container. [Figure 32] A perspective view showing a liquid container as another embodiment 3. [Figure 33] A perspective view showing a liquid container as another embodiment 4. [Figure 34] A perspective view showing a liquid container as another embodiment 5. [Figure 35] A perspective view showing a liquid container as another embodiment 6. [Figure 36] A diagram showing a liquid container as another embodiment 7. [Figure 37] A diagram showing a liquid container as another embodiment 8. [Figure 38] A perspective view showing a liquid container as another embodiment 9. [Figure 39] Enlarged view of the area around the circuit board. [Figure 40] Figure 1 illustrates the process of installing a liquid container into the housing section of a printing device. [Figure 41] Figure 2 illustrates the process of installing a liquid container into the housing section of a printing device. [Figure 42] A diagram showing the completed installation of the liquid container. [Figure 43] A diagram showing a printing system as another embodiment 1. [Figure 44] A diagram showing a printing system as another embodiment 2. [Figure 45] A diagram showing a printing system as another embodiment 3. [Figure 46] A diagram showing a printing system as another embodiment 4. [Figure 47A] A first timing chart for a printing system with six liquid containers. [Figure 47B]A second timing chart for a printing system with six liquid containers. [Figure 48] A schematic diagram showing the electrical configuration of a printing system equipped with six liquid containers. [Figure 49] A diagram showing a device as another embodiment 1. [Modes for carrying out the invention]

[0018] A. First Embodiment: A1. Hardware configuration: The overview of the printing system 1000 will be explained with reference to Figures 1 and 2. Figure 1 is a perspective view showing the hardware configuration of the printing system 1000. Figure 2 is an explanatory diagram showing the schematic configuration of the printing system 1000. Figure 1 includes mutually orthogonal X, Y, and Z axes. The arrows on the X, Y, and Z axes point in the positive directions along the X, Y, and Z axes, respectively. These positive directions along the X, Y, and Z axes are referred to as the +X direction, +Y direction, and +Z direction, respectively. The directions opposite to those pointed out by the arrows on the X, Y, and Z axes are the negative directions along the X, Y, and Z axes, respectively. These negative directions along the X, Y, and Z axes are referred to as the -X direction, -Y direction, and -Z direction, respectively. Regardless of whether the directions are positive or negative, the directions along the X, Y, and Z axes are called the X direction, Y direction, and Z direction, respectively. The same applies to the figures and explanations shown hereafter. The X, Y, and Z axes depicted in other figures correspond to the X, Y, and Z axes in Figure 1. In Figure 1, the front direction of the printing system 1000 in its normal operating orientation is defined as the +Y direction. The +Z direction is defined as the direction of gravity, and the -Z direction is defined as the direction of anti-gravity.

[0019] The printing system 1000 comprises a printing device 20 and a plurality of liquid storage containers 100. Specifically, the printing device 20 is an inkjet printer. Specifically, the liquid storage containers 100 are ink cartridges. The printing device 20 comprises a head drive mechanism, a main scanning feed mechanism, and a sub-scanning feed mechanism.

[0020] The head drive mechanism includes a carriage 30. The carriage 30 includes a housing 4 and a print head 5. The housing 4 is configured to detachably accommodate four liquid containers 100. In this disclosure, "the liquid containers 100 are mounted on the printing device 20" means that the liquid containers 100 are physically attached to the printing device 20 and that the contact portion cp of the terminal 290 (described later) is electrically connected to the device-side terminal 490 (described later). Each of the four liquid containers 100 is housed in a predetermined position in the housing 4. In this disclosure, each of the four liquid containers 100 contains a liquid of a different color. The liquid is specifically ink, and will be referred to as ink hereafter. When the four liquid containers 100 are to be distinguished, they will be referred to as liquid containers 100A to 100D. The carriage 30 is configured to move between a replacement position where the liquid containers 100 can be replaced and a standby position where the liquid containers 100 cannot be replaced.

[0021] The print head 5 is located on the +Z-direction surface of the carriage 30. The +Z-direction surface of the print head 5 is provided with multiple nozzles for ejecting ink droplets. Each nozzle is connected to one of the liquid containers 100A to 100D mounted on the housing unit 4 via a flow path within the carriage 30. The housing unit 4 is provided with a liquid introduction unit 6 (described later) and a connection mechanism 400 (described later). The liquid introduction unit 6 is configured to be detachable from the liquid supply port 104op (described later) of the liquid container 100. The liquid introduction unit 6 receives ink from the liquid container 100 and introduces the ink to the print head 5 via a flow path within the carriage 30. The connection mechanism 400 has multiple device-side terminals 490 (described later).

[0022] The main scanning feed mechanism comprises a drive belt 36, a carriage motor 32, a sliding shaft 34, and a pulley 38. The drive belt 36 is an endless belt and is stretched between the carriage motor 32 and the pulley 38. The carriage 30 is fixed to the drive belt 36. The sliding shaft 34 is provided parallel to the axis of the paper feed roller 26, which will be described later, and holds the carriage 30 in a slidable manner. As the carriage motor 32 rotates, the carriage 30, which is fixed to the drive belt 36, moves along the sliding shaft 34 in the +X and -X directions.

[0023] The sub-scanning feed mechanism includes a paper feed motor 22 and a paper feed roller 26. As the paper feed motor 22 rotates, the paper feed roller 26 transports the printing medium PA in the Y direction.

[0024] The printing apparatus 20 further includes a main control unit 40. The main control unit 40 is connected to the carriage 30 by a cable 31. A bus 46 is formed on the cable 31, and the main control unit 40 is electrically connected to a sub-control board 500 of the carriage 30, which will be described later, via the bus 46.

[0025] The main control unit 40 controls each of the above mechanisms to realize the printing process. For example, the main control unit 40 receives a user's print job from the computer 90 via the connector 80 and executes printing based on the content of the received print job. The printing medium PA is transported in the +Y direction by the paper feed roller 26, and the print head 5 provided on the carriage 30 moves in the +X and -X directions by the drive belt 36. As a result, ink ejected from the print head 5 in the +Z direction lands at any location on the printing medium PA, and an image is formed. In this disclosure, "image" includes characters and symbols. In this disclosure, the +X and -X directions in which the carriage 30 moves are collectively referred to as the "main scanning direction". The -Y and +Y directions in which the printing medium PA is fed are collectively referred to as the "sub-scanning direction".

[0026] The printing device 20 further includes an operating unit 70. The user uses the operating unit 70 to make various settings of the printing device 20 and to check the status of the printing device 20.

[0027] As described above, the printing apparatus 20 includes a print head 5, a liquid introduction unit 6 for introducing liquid to the print head 5, a storage unit 4 that houses the liquid storage container 100 and is provided with the liquid introduction unit 6, and a plurality of device-side terminals 490. The print head 5 is provided in the printing apparatus 20. The print head 5 is not provided in the liquid storage container 100. A configuration in which the print head 5 is provided in the liquid storage container 100 is outside the scope of the art and is not part of this disclosure.

[0028] The configuration of the liquid container 100 will be described with reference to Figures 3 and 4. Figure 3 is a first perspective view showing the configuration of the liquid container 100. Figure 4 is a second perspective view showing the configuration of the liquid container 100. The orientation of the X, Y, and Z axes of the liquid container 100 is based on the state in which the printing device 20 is positioned on a horizontal plane parallel to the X and Y directions, and the liquid container 100 is mounted on the printing device 20, as in Figure 1.

[0029] As shown in Figures 3 and 4, the external shape of the liquid container 100 is approximately a rectangular parallelepiped. As shown in Figure 3, the liquid container 100 comprises a liquid container 101 capable of containing ink as a liquid, a liquid supply unit 104 having a liquid supply port 104op, and a substrate 120.

[0030] The liquid container 101 forms the outer shell of the liquid container 100. The liquid container 101 has a first wall 101wf, a second wall 101wr, a third wall 101wb, a fourth wall 101wu, a fifth wall 101wsa, and a sixth wall 101wsb. These six walls 101wf, 101wr, 101wb, 101wu, 101wsa, and 101wsb partition the ink chamber 150 for containing ink inside the liquid container 101. The first wall 101wf is the wall on the +Y direction side and constitutes the front wall. The front wall faces the front side of the printing system 1000. The second wall 101wr is opposite the first wall 101wf. The second wall 101wr is the wall on the -Y direction side and constitutes the rear wall. The rear wall faces the rear side of the printing system 1000. The third wall 101wb intersects with the first wall 101wf and the second wall 101wr, and in this embodiment is substantially orthogonal. The third wall 101wb is the wall on the +Z side and constitutes the bottom wall. The fourth wall 101wu intersects with the first wall 101wf and the second wall 101wr, and in this embodiment is substantially orthogonal. The fourth wall 101wu faces the third wall 101wb. The fourth wall 101wu is the wall on the -Z side and constitutes the top wall. The fifth wall 101wsa intersects with the first wall 101wf to the fourth wall 101wu, and in this embodiment is substantially orthogonal. The fifth wall 101wsa is the wall on the -X side and constitutes the right side wall. The sixth wall 101wsb intersects with the first wall 101wf to the fourth wall 101wu, and in this embodiment, is substantially orthogonal. The sixth wall 101wsb faces the fifth wall 101wsa. The sixth wall 101wsb is the wall on the +X direction side and constitutes the left side wall.

[0031] The liquid supply unit 104 is a cylindrical member protruding from the third wall 101wb. The liquid supply port 104op is located at the tip of the liquid supply unit 104. The liquid supply port 104op communicates with the ink chamber 150 of the liquid container 101 and supplies ink to the liquid introduction section 6 of the carriage 30 (described later) when the liquid container 100 is mounted on the carriage 30 of the printing device 20. The liquid supply port 104op is sealed by a film 104f. The liquid supply port 104op is configured to be detachable from the liquid introduction section 6. When the liquid container 100 is mounted on the carriage 30, the film 104f is broken by the liquid introduction section 6. The ink contained in the ink chamber 150 is supplied to the print head 5 of the printing device 20 via the liquid introduction section 6. As the ink in the ink chamber 150 is consumed, air is introduced into the ink chamber 150 from an atmospheric vent (not shown).

[0032] The mounting direction MD is defined as the direction in which the liquid container 100 is mounted on the carriage 30 of the printing device 20. The mounting direction MD is also the direction in which the substrate 120 is mounted on the carriage 30 of the printing device 20. In this embodiment, the mounting direction MD is the +Z direction. Two mutually orthogonal directions are defined as the first direction FD and the second direction SD. The first direction FD is the direction that includes the component of the mounting direction MD. In this embodiment, the first direction FD is the Z direction, and the second direction FD is the X direction. The first direction FD is the direction substantially aligned with the front surface 120fa of the substrate 120.

[0033] The first direction FD can also be defined as follows. For example, the first direction FD is the direction perpendicular to the virtual plane containing the liquid supply port 104op. For example, the first direction FD is the direction in which the device-side terminals 490 of the printing device 20, described later, pass over the terminals 120, described later, when the liquid container 100 and the substrate 120 are mounted on the carriage 30. For example, the first direction FD is the direction perpendicular to the direction in which the multiple device-side terminals 490 of the printing device 20 are arranged. In other embodiments, if the front surface 120fa is inclined with respect to the mounting direction MD, the first direction FD will be a different direction from the mounting direction MD.

[0034] The substrate 120 is used in the liquid container 100. In this embodiment, as shown in Figure 4, the substrate 120 is provided on the second wall 101wr of the liquid container 101. Details of the substrate 120 will be described later.

[0035] Two protrusions, Pr1 and Pr2, are formed on the second wall 101wr. These protrusions Pr1 and Pr2 project in the -Y direction. The substrate 120 has a hole 122 and a notch 121 formed therein, respectively, to receive these protrusions Pr1 and Pr2. The hole 122 is formed in the center of the end of the substrate 120 on the side of the liquid supply section 104, and the notch 121 is formed in the center of the end of the substrate 120 on the side opposite to the liquid supply section 104. When the substrate 120 is fixed to the second wall 101wr, the protrusions Pr1 and Pr2 are inserted into the hole 122 and the notch 121, respectively. After the substrate 120 is inserted into the second wall 101wr, the tips of these protrusions Pr1 and Pr2 are crushed. This fixes the substrate 120 to the second wall 101wr. Note that the means for fixing the substrate 120 to the second wall 101wr are not limited to this.

[0036] In this embodiment, when the liquid container 100 is viewed from a direction perpendicular to the second wall 101wr on which the substrate 120 is provided, the substrate 120 is positioned such that the central axis of the liquid supply port 104op coincides with the first imaginary line C1, which will be described later. The contact portion cp, which will be described later, is not located on the central axis of the liquid supply port 104op.

[0037] As shown in Figure 3, the liquid container 100 further includes a liquid detection member 110. The liquid detection member 110 is fixed inside the liquid container 101. The liquid detection member 110 is a component used by the printing device 20 to detect the amount of ink remaining in the liquid container 100. The liquid detection member 110 may be, for example, a prism for optically detecting the amount of ink remaining, a piezoelectric element in which a piezoelectric body is sandwiched between two opposing electrodes, or two electrodes that detect the amount of ink remaining by the difference in resistance between the electrodes. Note that the liquid detection member 110 is not required.

[0038] The details of the substrate 120 will be described with reference to Figures 5 and 6. Figure 5 is a first diagram showing the configuration of the substrate 120. Figure 6 is a second diagram showing the configuration of the substrate 120. As shown in Figure 6, the substrate 120 comprises a base material 120bd, a plurality of terminals 290, a device 130, and wiring (not shown). The substrate 120 may include other components. The base material 120bd has a front surface 120fa and a back surface 120fb. In this embodiment, the front surface 120fa and the back surface 120fb are both planar. The base material 120bd may be made of a material that constitutes a rigid substrate or a flexible substrate, etc. The terminals 290 are formed of a conductor such as gold foil.

[0039] In this disclosure, "surface" is defined, for example, as follows: For example, "surface" is the surface of the base material 120bd that faces the device-side terminal 490, described later, when the liquid container 100 or substrate 120 is mounted on the printing device 20. For example, "surface" is the surface of the base material 120bd that faces the device-side terminal 490, described later, when the liquid container 100 or substrate 120 is mounted on the printing device 20, as well as the surface on which the terminal 290 is formed. For example, "surface" is the surface of the base material 120bd that includes the contact portion cp, described later. In this embodiment, "surface" is the front surface 120fa. In other embodiments, unless otherwise specified, "surface" is the front surface 120fa.

[0040] As shown in Figure 5, the multiple terminals 290 include a data terminal 210, a clock terminal 220, a power terminal 230, a reset terminal 240, and a ground terminal 250. Each terminal 210, 220, 230, 240, and 250 is connected to the device 130. Each terminal 210 to 250 is electrically connected to the device 130 via wiring pattern layers provided on the front surface 120fa and back surface 120fb of the substrate 120bd, or via through-holes provided inside the substrate 120bd. The data terminal 210 is used to send and receive data signals SDA between the device 130 and the printing apparatus 20. Here, "signal" refers to a change in voltage. The signals transmitted and received via the data terminal 210 include, for example, signals indicating various data stored in the memory unit 138 (described later), signals controlled by the processing unit 136 (described later) and not stored in the memory unit 138, and signals controlled by the main control unit 40 and sub-control unit 50 of the printing device 20 and not stored in the memory unit 138. The clock terminal 220 is used to transmit a clock signal SCK from the printing device 20 to the device 130. The power terminal 230 is used to supply the power supply voltage VDD from the printing device 20 to the device 130. The reset terminal 240 is used to transmit a reset signal RST from the printing device 20 to the device 130. The ground terminal 250 is grounded via the device-side terminal 450 of the printing device 20 (described later). The voltages supplied to the data terminal 210, clock terminal 220, power terminal 230, and reset terminal 240 are voltages that the device 130 can accept. The voltage range supplied to each terminal 210-240 is the same, and in this embodiment, it is approximately 0V to approximately 3.3V. A voltage acceptable to device 130 is, for example, a voltage lower than the voltage used to drive the print head 5, a voltage similar to the power supply voltage VDD, a voltage lower than the withstand voltage of device 130, a voltage that does not damage device 130, or a voltage that does not cause device 130 to malfunction. Here, check terminals used for shipping inspection are not included in terminal 290 of this disclosure. A check terminal is a terminal that does not come into contact with the device-side terminal 490 of the printing device 20 when the liquid container 100 is mounted on the printing device 20. The check terminal does not form a contact portion cp, which will be described later.

[0041] As shown in Figure 5, each terminal 210, 220, 230, 240, 250 includes a contact portion cp that should contact the corresponding device-side terminals 410, 420, 430, 440, 450 of the multiple device-side terminals 490 of the connection mechanism 400 of the printing device 20 when the liquid container 100 is mounted in the storage section 4. The contact portion cp of the data terminal 210 is also called the data contact portion cpd. The contact portion cp of the clock terminal 220 is also called the clock contact portion cpc. The contact portion cp of the power terminal 230 is also called the power contact portion cpvd. The contact portion cp of the reset terminal 240 is also called the reset contact portion cpr. The contact portion cp of the ground terminal 250 is also called the ground contact portion cpvs. The contact area cp is a portion of each terminal 210, 220, 230, 240, and 250 that should contact the device-side terminals 410, 420, 430, 440, and 450 when the liquid container 100 is mounted in the container 4, and is an area that can be recognized even when the liquid container 100 is mounted alone. The substrate 120 has a data contact area cpd, a clock contact area cpc, a power contact area cpvd, a reset contact area cpr, and a ground contact area cpvs. The connection between terminal 290 and the device-side terminal 490 of the printing device 20 will be described later. Terminal 290 and its corresponding contact area cp may be located in addition to the terminals 210 to 250 mentioned above.

[0042] The data terminal 210 is used to detect whether the data terminal 210 is short-circuited to at least one of the clock terminal 220, the power terminal 230, and the reset terminal 240. Specifically, the data terminal 210 is used to detect whether the data terminal 210 is short-circuited to at least one of the clock terminal 220, the power terminal 230, and the reset terminal 240 as described later. The data terminal 210 is used to detect whether the liquid container 100 is mounted on the printing device 20. Specifically, the data terminal 210 is used to detect whether the liquid container 100 is in the mounted state described later or the unmounted state described later.

[0043] Hereafter, the substrate 120 will be viewed in plan view. As shown in Figure 5, the two orthogonal lines are designated as the first virtual line C1 and the second virtual line C2. In this embodiment, the first virtual line C1 is in the direction along the first direction FD, and the second virtual line C2 is in the direction along the second direction SD. In this embodiment, the first virtual line C1 and the second virtual line C2 are two orthogonal lines that substantially align with the surface 120fa of the substrate 120bd.

[0044] Assume that all contact points cp of all terminals 290 provided on the substrate 120bd of the substrate 120 are projected onto the second virtual line C2. In this embodiment, assume that the data contact point cpd, clock contact point cpc, power supply contact point cpvd, reset contact point cpr, and ground contact point cpvs are projected onto the second virtual line C2. Regarding the projection positions of the contact points cp, let swd be the projection position of the data contact point cpd, swc be the projection position of the clock contact point cpc, swvd be the projection position of the power supply contact point cpvd, swr be the projection position of the reset contact point cpr, and swvs be the projection position of the ground contact point cpvs. Each projection position swd, swc, swvd, swr, and swvs are orthogonal projections obtained by projecting each contact point cpd, cpc, cpvd, cpr, and cpvs perpendicularly onto the second virtual line C2. In this case, all contact points cp are projected to different positions. The data contact cpd, clock contact cpc, power contact cpvd, reset contact cpr, and ground contact cpvs are arranged such that their respective virtual lines along the first virtual line C1 passing through each contact cp are parallel to each other and do not overlap or intersect. In this case, the first virtual line C1 passes through MP, which is the midpoint between the two furthest projection positions of all the contact cps. In this embodiment, the first virtual line C1 passes through MP, which is the midpoint between the projection position of the contact furthest from the projection position swvs of the ground contact cpvs, and the projection position swvs of the ground contact cpvs, among the projection positions swd, swc, swvd, swr of the data contact cpd, clock contact cpc, power contact cpvd, and reset contact cpr. In this embodiment, the first virtual line C1 passes midway between the projection position swc of the clock contact cpc and the projection position swvs of the ground contact cpvs.

[0045] With respect to the first virtual line C1, one region of the substrate 120bd of the substrate 120 is designated as the first region Rg1, and the other region of the substrate 120bd of the substrate 120 is designated as the second region Rg2. In this embodiment, the first region Rg1 is the region on the -X side, which is the negative direction of the second direction SD, relative to the first virtual line C1, and the second region Rg2 is the region on the +X side, which is the positive direction of the second direction SD, relative to the first virtual line C1. The first region Rg1 is also one region of the substrate 120 that straddles the first virtual line C1, and the second region Rg2 is also the other region of the substrate 120 that straddles the first virtual line C1. Of all the contact parts cp, some contact parts cpa are located in the first region Rg1, and the remaining contact parts cpb are located in the second region Rg2. Some of the contacts cpa located in the first region Rg1 include a data contact cpd, a clock contact cpc, a power supply contact cpv, and a reset contact cpr. The remaining contacts cpb located in the second region Rg2 include a ground contact cpvs. On one side of the first virtual line C1 are the clock contact cpc, data contact cpd, reset contact cpr, and power supply contact cpvd, while on the other side are the ground contact cpvs. Some of the contacts cpa and the remaining contacts cpb are arranged asymmetrically with respect to the first virtual line C1. No contacts cp are provided on the first virtual line C1.

[0046] The ground contact cpvs is located at the outermost end of the multiple contacts cp in the +X direction, which is the positive direction of the second direction SD. One of the clock contacts cpc, data contact cpd, power contact cpvd, and reset contact cpr, one of the multiple contacts cp, is located at the outermost end of the multiple contacts cp in the -X direction, which is the negative direction of the second direction SD. This one of the multiple contacts cp is located on the outermost side of the second direction SD. The ground contact cpvs is located on the outermost side of the second direction SD. In the first region Rg1, the distance between the contact cp that is projected to the position furthest from the projection position swvs of the ground contact cpvs when projected onto the second virtual line C2, and the ground contact cpvs located in the second region Rg2, in the direction along the second virtual line C2, is Wa. In this embodiment, the distance between the projected position swc of the clock contact portion cpc and the projected position swvs of the ground contact portion cpvs in the direction along the second virtual line C2 is Wa. In this embodiment, the distance between the clock contact portion cp and the ground contact portion cpvs in the second direction SD is the distance Wa.

[0047] It is preferable that the data contact portion cpd, clock contact portion cpc, power supply contact portion cpvd, and reset contact portion cpr be positioned away from the ground contact portion cpvs. For example, in the first region Rg1, the distance in the direction along the second virtual line C2 between the contact portion cp (excluding the ground contact portion cpvs) that is projected to the position closest to the projection position swvs of the ground contact portion cpvs when projected onto the second virtual line C2, and the ground contact portion cpvs provided in the second region Rg2, is Wa / 2 or more. In this embodiment, in the first region Rg1, the distance in the second direction SD between the reset contact portion cpr (located on the positive side of the second direction SD) and the ground contact portion cpvs provided in the second region Rg2, excluding the ground contact portion cpvs, is Wa / 2 or more. For example, in the first region Rg1, among the contact parts cp excluding the ground contact part cpvs, there are no other contact parts cp connected to the device 130 via terminal 290 between the contact part cp that is projected to the position closest to the projection position swvs of the ground contact part cpvs when projected onto the second virtual line C2, and the ground contact part cpvs provided in the second region Rg2. In this embodiment, there are no other contact parts cp connected to the device 130 via terminal 290 in the region between the reset contact part cpr provided at the furthest end on the +X side, which is the positive direction of the second direction SD, in the first region Rg1, and the ground contact part cpvs provided in the second region Rg2. For example, other contact parts cpd, cpc, cpvd, cpr and the ground contact part cpvs arranged on the substrate 120 are not provided on the first virtual line C1.

[0048] On the substrate 120, at least one contact portion cp from among the clock contact portion cpc, power supply contact portion cpvd, and reset contact portion cpr is projected between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs. Preferably, on the substrate 120, two or more contact portions cp from among the clock contact portion cpc, power supply contact portion cpvd, and reset contact portion cpr are projected between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs. In this embodiment, on the substrate 120, the power supply contact portion cpvd and the reset contact portion cpr are projected between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs.

[0049] On the substrate 120, the data contact portion cpd is positioned so as to be projected between the projection positions of any two contact portions cp, which are the power supply contact portion cpvd, the reset contact portion cpr, and the clock contact portion cpc. The data contact portion cpd is not the contact portion projected at the very edge on the second virtual line C2. In this embodiment, the data contact portion cpd is positioned so as to be projected between the projection position of the clock contact portion cpc and the power supply contact portion cpvd.

[0050] On the substrate 120, the data contact portion cpd and the reset contact portion cpr, or both, are projected between the projection position swvd of the power supply contact portion cpvd and the projection position swc of the clock contact portion cpc. Furthermore, the reset contact portion cpr is positioned such that its projection position swr is adjacent to the projection position swvd of the power supply contact portion cpvd. In this embodiment, the substrate 120 is positioned such that the data contact portion cpd is projected between the projection position swvd of the power supply contact portion cpvd and the projection position swc of the clock contact portion cpc. "Arranged adjacent to" does not necessarily mean that one contact portion is the closest to another. Other configurations may be arranged between one contact portion and another without departing from the spirit of this disclosure.

[0051] On the substrate 120, the power supply contact portion cpvd is positioned such that its projected position swvd is adjacent to the projected position swd of the data contact portion cpd.

[0052] In this embodiment, the clock contact portion cpc is positioned on the substrate 120 so as to be projected at the position furthest from the projection position swvs of the ground contact portion cpvs. The data contact portion cpd, the power supply contact portion cpvd, and the reset contact portion cpr are positioned so as to be projected sequentially from the projection position swc of the clock contact portion cpc on the second virtual line C2 toward the projection position swvs of the ground contact portion cpvs. The clock contact portion cpc is located at the very end in the negative direction -X of the second direction SD. The contact portions cp other than the clock contact portion cpc are positioned in the order of data contact portion cpd, power supply contact portion cpvd, and reset contact portion cpr, moving from the negative direction -X of the second direction SD toward the positive direction +X. The multiple contact portions cp are positioned such that their respective projection positions are in the order of clock contact portion cpc, data contact portion cpd, power supply contact portion cpvd, reset contact portion cpr, and ground contact portion cpvs, moving from the -X direction toward the +X direction.

[0053] The clock contact portion cpc, data contact portion cpd, power supply contact portion cpvd, reset contact portion cpr, and ground contact portion cpvs are arranged to form multiple columns. These columns are parallel to the second virtual line C2 and perpendicular to the first virtual line C1. In this embodiment, the multiple contact portions cp are arranged to form two columns perpendicular to the first direction FD, and the direction of these two columns is parallel to the second direction SD. The direction in which the two columns align is along the first virtual line C1, which in this embodiment is along the first direction FD. The two columns are referred to as the first column R1 and the second column R2. The first column R1 is formed by the clock contact portion cpc, the power supply contact portion cpvd, and the ground contact portion cpvs. The second column R2 is formed by the data contact portion cpd and the reset contact portion cpr. The data contact portion cpd and reset contact portion cpr that form the second column R2, and the clock contact portion cpc, power supply contact portion cpvd and ground contact portion cpvs that form the first column R1, are arranged alternately so that their respective contact portions cp do not align in the direction of the first virtual line C1, forming a so-called staggered arrangement. Two contact portions cp on the substrate 120bd that are projected adjacently when projected onto the second virtual line C2 form different columns. The data contact portion cpd and the ground contact portion cpvs are arranged in different columns. Between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs, one of the contact portion cp among the clock contact portion cpc, power supply contact portion cpvd, and reset contact portion cpr is projected. In this embodiment, between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs, the reset contact portion cpr and the power supply contact portion cpvd are projected. In this embodiment, the contact portions cp of each terminal 210-250 are arranged to form a first row R1 and a second row R2, but this is not limited to this configuration. For example, the contact portions cp of each terminal 210-250 may be arranged to form three or four rows. A row can also be formed by a single contact portion cp.

[0054] Let distance Dan be the distance between the ground contact cpvs and the reset contact cpr. Let distance Dbn be the distance between the data contact cpd and the clock contact cpc. Let distance Dcn be the distance between the data contact cpd and the ground contact cpvs. Let distance Ddn be the distance between the data contact cpd and the reset contact cpr. Let distance Den be the distance between the data contact cpd and the power contact cpvd. In this case, distance Dcn is longer than distance Dbn. Distance Dcn is longer than distance Den. Distance Dcn is longer than distance Ddn. In this embodiment, distance Dbn and distance Den are the same. The distance between the data contact cpd and the contact cp furthest from the data contact cpd among the multiple contacts cp excluding the ground contact cpvs is distance Dbn and distance Den. In this case, distance Dan is longer than distance Dbn and distance Den.

[0055] The clock contact portion cpc, the reset contact portion cpr, and the power supply contact portion cpvd are positioned adjacent to the data contact portion cpd, surrounding it between the data contact portion cpd and the ground contact portion cpvs. The data contact portion cpd is positioned inside a virtual circle Vcr that passes through the clock contact portion cpc, the reset contact portion cpr, and the power supply contact portion cpvd, so that the clock contact portion cpc, the reset contact portion cpr, and the power supply contact portion cpvd surround the data contact portion cpd.

[0056] Let the virtual line segment connecting the clock contact cpc and the data contact cpd be the first line segment FL, the virtual line segment connecting the reset contact cpr and the data contact cpd be the second line segment SL, and the virtual line segment connecting the power contact cpvd and the data contact cpd be the third line segment TL. On the first line segment FL, there are no contact points cp of terminals 290 other than the clock contact cpc and the data contact cpd. On the second line segment SL, there are no contact points cp of terminals 290 other than the reset contact cpr and the data contact cpd. On the third line segment TL, there are no contact points cp of terminals 290 other than the power contact cpvd and the data contact cpd.

[0057] In this embodiment, the five terminals 210 to 250 have the same positional relationship as the contact parts cpd, cpc, cpvd, cpr, and cpvs described above. That is, the first region Rg1 has the data terminal 210, the clock terminal 220, the reset terminal 240, and the power terminal 230. The second region Rg2 has the ground terminal 250. No other terminals 290 different from the clock terminal 220 and the data terminal 210 are located on the first line segment FL. No other terminals 290 different from the reset terminal 240 and the data terminal 210 are located on the second line segment SL. No other terminals 290 different from the power terminal 230 and the data terminal 210 are located on the third line segment TL.

[0058] As described above, the data terminal 210 is used to detect whether a short circuit has occurred between the data terminal 210 and the clock terminal 220, reset terminal 240, and power terminal 250, and whether the liquid container 100 is mounted on the printing device 20. At least a portion of the arrangement of the contact portion cp in this disclosure is determined to enable such detection.

[0059] As shown in Figure 6, the device 130 is configured to be mounted on the substrate 120bd. The device 130 includes a processing unit 136. In this embodiment, the device 130 includes the processing unit 136 and a storage unit 138. The device 130 is molded (sealed) with resin 139. The device 130 may be mounted on the substrate 120bd by another method.

[0060] The processing unit 136 is, for example, composed of a circuit. The processing unit 136 is connected to terminals 210 to 250 and controls the signals and voltages input and output to terminals 210 to 250. The processing unit 136 may also be a circuit with advanced arithmetic processing capabilities, such as a CPU. Details of the processing unit 136 will be described later.

[0061] The storage unit 138 is composed of, for example, non-volatile memory such as flash memory. The storage unit 138 stores information about the liquid container 100. This information includes, for example, the amount of ink consumed, the color of the ink, the manufacturing date of the liquid container 100, and identification information for the liquid container 100. In this embodiment, the liquid containers 100A to 100D are each assigned the identification information "1" to "4".

[0062] Referring to Figures 7A to 7C, the configuration of the carriage 30 and how the liquid container 100 is attached to the carriage 30 will be explained. Figure 7A shows how the liquid container 100 is attached to the carriage 30. Figure 7B is the first diagram showing the connection mechanism 400. Figure 7C is the second diagram showing the connection mechanism 400.

[0063] The carriage 30 comprises a housing section 4 and a print head 5. The housing section 4 is positioned on top of the print head 5 and is configured to detachably accommodate a plurality of liquid storage containers 100. Inside the housing section 4, mounting chambers 65 are formed into which the liquid storage containers 100 are installed. In this embodiment, four mounting chambers 65 are provided, corresponding to the number of liquid storage containers 100A to 100D. The print head 5 includes a plurality of nozzles and a plurality of piezoelectric elements, and ejects ink droplets from each nozzle according to the voltage applied to each piezoelectric element, forming dots on the printing medium PA. The housing section 4 is provided with a liquid introduction section 6, a sub-control board 500, and a connection mechanism 400. The liquid introduction section 6 is positioned on top of the print head 5 in the normal operating position of the printing system 1000 and introduces ink to the print head 5 from the liquid supply port 104op of the liquid storage container 100. In this embodiment, four liquid introduction sections 6 are provided, corresponding to the number of liquid storage containers 100A to 100D. The sub-control board 500 is equipped with multiple sub-control board terminals 510, 520, 530, 540, and 550, and a sub-control unit 50. When the multiple sub-control board terminals 510, 520, 530, 540, and 550 are used without distinction, the reference numeral 590 is used. Multiple sub-control board terminals 590 are provided for each mounting chamber 65. Multiple sub-control board terminals 590 are electrically connected to the sub-control unit 50 via wiring on the sub-control board 500. The sub-control unit 50 is configured, for example, as a carriage circuit and works in cooperation with the main control unit 40 shown in Figure 2 to perform control related to the liquid container 100.

[0064] The liquid container 100 is mounted to the mounting section 4 of the printing device 20 by being inserted in the mounting direction MD. The liquid container 100 is removed from the storage section 4 by being pulled out in the direction opposite to the mounting direction MD. In this way, the liquid container 100 is detachably mounted to the printing device 20. When the liquid container 100 is mounted to the storage section 4, the device 130 is electrically connected to the main control unit 40 via the terminal 290, the connection mechanism 400, the sub-control board 500, and the bus 46 shown in Figure 2.

[0065] As shown in Figures 7B and 7C, the connection mechanism 400 comprises a terminal holding portion 405 and a plurality of contact-forming members 403 held by the terminal holding portion 405. The connection mechanism 400 is provided for each liquid container 100A to 100D, i.e., for each mounting chamber 65. As shown in Figure 7B, the terminal holding portion 405 has a plurality of slits 301. The contact-forming members 403 are conductive and elastic. The contact-forming members 403 are fitted into the slits 301. In this embodiment, five contact-forming members 403 are provided for each connection mechanism 400, the same number as the terminals 290. As shown in Figure 7B, when distinguishing between the five contact-forming members 403, the reference numerals "403A", "403B", "403C", "404D", and "404E" are used. In this embodiment, the connection mechanism 400 has nine slits 301, which are arranged at regular intervals, but the number of slits may be the same as the number of contact portion forming members 403.

[0066] As shown in Figure 7C, the contact-forming member 403 is a member that electrically connects the terminal 290 of the liquid container 100 and the sub-control board terminal 590 of the sub-control board 500. Of the contact-forming member 403, the portion facing the mounting chamber 65 forms the device-side terminal 490. The device-side terminal 490 includes a contact portion dcp that is to contact the terminal 290. In this embodiment, the device-side terminal 490 has a contact portion dcp of the device-side terminal 490 formed by the portion of the contact-forming member 403 that faces the mounting chamber 65, i.e., the portion that protrudes the most toward the mounting chamber 65, contacting the terminal 290. The contact portion dcp of the device-side terminal 490 is not limited to this embodiment. For example, the terminal 290 may contact a portion of the device-side terminal 490 other than the portion that protrudes the most toward the mounting chamber 65. Of the contact-forming member 403, the portion that protrudes toward the sub-control board 500 forms a relay terminal 439 that contacts the sub-control board terminal 590.

[0067] When distinguishing between the device-side terminals 490, the designations "410", "420", "430", "440", and "450" ​​are used. When distinguishing between the relay terminals 439, the designations "431", "432", "433", "434", and "435" are used. The device-side terminal 410 and relay terminal 431 are formed on the contact-forming member 403A. The device-side terminal 420 and relay terminal 432 are formed on the contact-forming member 403B. The device-side terminal 430 and relay terminal 433 are formed on the contact-forming member 403C. The device-side terminal 440 and relay terminal 434 are formed on the contact-forming member 403D. The device-side terminal 450 and relay terminal 435 are formed on the contact-forming member 403E. Terminal 410 on the device side is also called the device side data terminal, terminal 420 on the device side clock terminal, terminal 430 on the device side power terminal, terminal 440 on the device side reset terminal, and terminal 450 on the device side ground terminal.

[0068] Contact-forming member 403A electrically connects the data terminal 210 and the sub-control board terminal 510. The device-side terminal 410 contacts the data terminal 210, and the relay terminal 431 contacts the sub-control board terminal 510. Contact-forming member 403B electrically connects the clock terminal 220 and the sub-control board terminal 520. The device-side terminal 420 contacts the clock terminal 220, and the relay terminal 432 contacts the sub-control board terminal 520. Contact-forming member 403C electrically connects the power terminal 230 and the sub-control board terminal 530. The device-side terminal 430 contacts the power terminal 230, and the relay terminal 433 contacts the sub-control board terminal 530. Contact-forming member 403D electrically connects the reset terminal 240 and the sub-control board terminal 540. The device-side terminal 440 contacts the reset terminal 240, and the relay terminal 434 contacts the sub-control board terminal 540. The contact-forming member 403E electrically connects the ground terminal 250 and the sub-control board terminal 550. The device-side terminal 450 contacts the ground terminal 250, and the relay terminal 435 contacts the sub-control board terminal 550.

[0069] Terminals 210, 220, 230, 240, and 250 are electrically connected by contact with the device-side terminals 410, 420, 430, 440, and 450 when the liquid container 100 is mounted in the storage section 4. The device-side terminals 410, 420, 430, 440, and 450 of the connection mechanism 400 are electrically connected by contact with the sub-control board terminals 590 on the sub-control board 500. The sub-control board terminals 590 of the sub-control board 500 are electrically connected to the sub-control unit 50 by wiring. As a result, each terminal 210, 220, 230, 240, and 250 is electrically connected to the sub-control unit 50.

[0070] Furthermore, the positional relationship between each contact point cp in the liquid container 100 and other elements, such as the first virtual line C1, also applies similarly to the contact points dcp of the device-side terminals 410 to 450. The arrangement of each contact point cp in the liquid container 100 and the arrangement of the contact points dcp of the device-side terminal 490 are mirror images of each other. As shown in Figure 7B, the contact point dcp of the device-side data terminal 410 is also called the device-side data contact point dcpd. The contact point dcp of the device-side clock terminal 420 is also called the device-side clock contact point dcpc. The contact point dcp of the device-side power terminal 430 is also called the device-side power contact point dcpvd. The contact point dcp of the device-side reset terminal 440 is also called the device-side reset contact point dcpr. The contact point dcp of the device-side ground terminal 450 is also called the device-side ground contact point dcpvs.

[0071] As shown in Figure 7B, the connection mechanism 400 is viewed from above. Two orthogonal lines are designated as the first virtual line C1 and the second virtual line C2. In Figure 7B, the first virtual line C1 is in the direction along the first direction FD, and the second virtual line C2 is in the direction along the second direction SD. In this embodiment, the first virtual line C1 and the second virtual line C2 are two orthogonal lines that substantially align with the surface of the terminal holding portion 405.

[0072] Assume that the contact points dcp of all device-side terminals of the connection mechanism 400 are projected onto the second virtual line C2. In this embodiment, assume that the device-side data contact point dcpd corresponding to the data terminal 210, the device-side clock contact point dcpc corresponding to the clock terminal 220, the device-side power contact point dcpvd corresponding to the power terminal 230, the device-side reset contact point dcpr corresponding to the reset terminal 240, and the device-side ground contact point dcpvs corresponding to the ground terminal 250 are projected onto the second virtual line C2. Regarding the projection positions of the contact points dcp of the device-side terminals, the projection position of the device-side data contact point dcpd is denoted as swd, the projection position of the device-side clock contact point dcpc is denoted as swc, the projection position of the device-side power contact point dcpvd is denoted as swvd, the projection position of the device-side reset contact point dcpr is denoted as swr, and the projection position of the device-side ground contact point dcpvs is denoted as swvs. Each projection position swd, swc, swvd, swr, swvs is an orthogonal projection perpendicular to the second virtual line C2 from the contact portion dcp of each device-side terminal. In this case, the contact portion dcp of all device-side terminals is projected to a different position. The device-side data contact portion dcpd, device-side clock contact portion dcpc, device-side power contact portion dcpvd, device-side reset contact portion dcpr, and device-side ground contact portion dcpvs are projected to a different position. The device-side data contact portion dcpd, device-side clock contact portion dcpc, device-side power contact portion dcpvd, device-side reset contact portion dcpr, and device-side ground contact portion dcpvs are arranged such that their respective virtual lines along the first virtual line C1 passing through the contact portion dcp of each device-side terminal are parallel to each other without overlapping or intersecting. Also, in this case, the first virtual line C1 passes through MP, which is the midpoint between the two furthest projection positions of the contact portion dcp of all device-side terminals. In this embodiment, the first virtual line C1 passes through the midpoint MP between the projection position of the contact located furthest from the projection position swvs of the device-side ground contact dcpvs, and the projection position swvs of the device-side ground contact dcpvs, among the projection positions swd, swc, swvd, swr of the device-side data contact dcpd, device-side clock contact dcpc, device-side power contact dcpvd, and device-side reset contact dcpr, respectively.In this embodiment, the first virtual line C1 passes midway between the projected position swc of the device-side clock contact portion dcpc and the projected position swvs of the device-side ground contact portion dcpvs.

[0073] With respect to the first virtual line C1, one region of the connection mechanism 400 is designated as the first region Rg1, and the other region of the connection mechanism 400 is designated as the second region Rg2. In this case, device-side terminals 410, 420, 430, and 440 are located in the first region Rg1, and device-side terminal 450 is located in the second region Rg2. In this embodiment, the first region Rg1 is the region on the -X side, which is the negative direction of the second direction SD, relative to the first virtual line C1, and the second region Rg2 is the region on the +X side, which is the positive direction of the second direction SD, relative to the first virtual line C2. The first region Rg1 is also one region of the connection mechanism 400 that straddles the first virtual line C1, and the second region Rg2 is also the other region of the connection mechanism 400 that straddles the first virtual line C1. Of the contact points dcp of all device-side terminals, some contact points dcpa ​​are located in the first region Rg1, and the remaining contact points dcpb are located in the second region Rg2. The portion of contact points dcpa ​​located in the first region Rg1 includes the device-side data contact point dcpd, the device-side clock contact point dcpc, the device-side power contact point dcpv, and the device-side reset contact point dcpr. The remaining contact points dcpb located in the second region Rg2 include the device-side ground contact point dcpvs. On one side of the first virtual line C1 are the device-side clock contact point dcpc, the device-side data contact point dcpd, the device-side reset contact point dcpr, and the device-side power contact point dcpvd, while on the other side are the device-side ground contact point dcpvs. The portion of contact points dcpa ​​and the remaining contact points dcpb are arranged asymmetrically with respect to the first virtual line C1. No device-side terminal contact points dcp are provided on the first virtual line C1.

[0074] As shown in Figure 7B, the device-side ground contact dcpvs is located at the outermost end of the multiple device-side terminal contacts dcp in the +X direction, which is the positive direction of the second direction SD. The contact dcp of any one of the device-side terminals among the device-side clock contact dcpc, device-side data contact dcpd, device-side power contact dcpvd, and device-side reset contact dcpr is located at the outermost end of the multiple device-side terminal contacts dcp in the -X direction, which is the negative direction of the second direction SD. This one device-side terminal contact dcp is located on the one side of the second direction SD among the multiple device-side terminal contacts dcp. The device-side ground contact dcpvs is located on the other side of the second direction SD among the multiple device-side terminal contacts dcp. In the first region Rg1, among the contact parts dcp of the device-side terminals excluding the device-side ground contact parts dcpvs, the distance between the contact part dcp that is projected to the position furthest from the projection position swvs when projected onto the second virtual line C2 and the device-side ground contact parts dcpvs provided in the second region Rg2, in the direction along the second virtual line C2, is Wa.

[0075] It is preferable that the device-side data contact dcpd, device-side clock contact dcpc, device-side power contact dcpd, and device-side reset contact dcpr be positioned away from the device-side ground terminal contact dcpvs. For example, in the first region Rg1, the distance in the direction along the second virtual line C2 between the contact dcp of the device-side terminal 490, excluding the device-side ground contact dcpvs, that is projected to the position closest to the projection position swvs when projected onto the second virtual line C2, and the device-side ground contact dcpvs provided in the second region Rg2, is Wa / 2 or more. For example, in the first region Rg1, among the contact parts dcp of device-side terminals excluding the device-side ground contact part dcpvs, there are no other contact parts dcp of device-side terminals between the contact part dcp of the device-side terminal that is projected to the position closest to the projection position swvs when projected onto the second virtual line C2 and the device-side ground contact part dcpvs provided in the second region Rg2. In this embodiment, there are no other contact parts dcp of device-side terminals in the region between the device-side reset contact part dcpr, which is provided at the furthest end on the +X direction side, which is the positive direction of the second direction SD, in the first region Rg1, and the device-side ground contact part dcpvs provided in the second region Rg2. For example, the contact parts dcp of device-side terminals 410 to 440 and the device-side ground contact part dcpvs are not provided on the first virtual line C1.

[0076] The device-side data contact dcpd is projected between the projection position swd and the projection position swvs of the device-side ground contact dcpvs, such that the contact dcp of at least one device-side terminal, selected from the device-side clock contact dcpc, device-side power contact dcpvd, and device-side reset contact dcpr, is projected between the projection position swd of the device-side data contact dcpd and the projection position swvs of the device-side ground contact dcpvs, such that the contact dcp of two or more device-side terminals, selected from the device-side clock contact dcpc, device-side power contact dcpvd, and device-side reset contact dcpr, is projected between the projection position swd and the projection position swvs of the device-side ground contact dcpvs.

[0077] The device-side data terminal dcpd is positioned so as to be projected between the projection positions of the contacts dcp of any two of the device-side terminals: the device-side clock contact dcpc, the device-side power contact dcpvd, and the device-side reset contact dcpr. The device-side data contact dcpd is not the contact that is projected at the very end on the second virtual line C2. In this embodiment, the device-side data contact dcpd is positioned so as to be projected between the projection positions of the device-side clock contact dcpc and the device-side power contact dcpvd.

[0078] Between the projection position swvd of the device-side power contact dcpvd and the projection position swc of the device-side clock contact dcpc, either or both of the device-side data contact dcpd and the device-side reset contact dcpr are projected. Furthermore, the device-side reset contact dcpr is positioned such that its projection position swr is adjacent to the projection position swvd of the device-side power contact dcpvd. In this embodiment, the device-side data contact dcpd is projected between the projection position swvd of the device-side power contact dcpvd and the projection position swc of the device-side clock contact dcpc.

[0079] The device-side power contact dcpr is positioned such that its projection position swvd is adjacent to the projection position swd of the device-side data contact dcpd.

[0080] In this embodiment, the device-side clock contact dcpc is positioned so as to be projected at the position furthest from the projection position swvs of the device-side ground contact dcpvs. The device-side data contact dcpd, the device-side power contact dcpvd, and the device-side reset contact dcpr are positioned so as to be projected sequentially from the projection position swc of the device-side clock contact dcpc on the second virtual line C2 toward the projection position swvs of the device-side ground contact dcpvs. The device-side clock contact dcpc is located at the very end in the negative direction -X of the second direction SD. The contacts dcp of the device-side terminals other than the device-side clock contact dcpc are positioned in the order of device-side data contact dcpd, device-side power contact dcpvd, and device-side reset contact dcpr, moving from the negative direction -X of the second direction SD toward the positive direction +X. The contact points dcp of the multiple device-side terminals are arranged such that their respective projection positions are in the order of device-side clock contact point dcpc, device-side data contact point dcpd, device-side power contact point dcpvd, device-side reset contact point dcpr, and device-side ground contact point dcpvs, from the -X direction to the +X direction.

[0081] The device-side clock contact dcpc, device-side data contact dcpd, device-side power contact dcpvd, device-side reset contact dcpr, and device-side ground contact dcpvs are arranged to form multiple columns. These columns are parallel to the second virtual line C2 and perpendicular to the first virtual line C1. In this embodiment, the contacts dcp of the multiple device-side terminals are arranged to form two columns perpendicular to the first direction FD, and the direction of the two columns is parallel to the second direction SD. The direction in which the two columns are aligned is along the first virtual line C1, which in this embodiment is along the first direction FD. The two columns are referred to as the first column R1 and the second column R2. The first column R1 is formed by the device-side clock contact dcpc, the device-side power contact dcpvd, and the device-side ground contact dcpvs. The second column R2 is formed by the device-side data contact dcpd and the device-side reset contact dcpr. The device-side data contact dcpd and device-side reset contact dcpr forming the second column R2, and the device-side clock contact dcpc, device-side power contact dcpvd, and device-side ground contact dcpvs forming the first column R1, are arranged alternately so that their contact dcps do not align in the direction of the first virtual line C1, forming a so-called staggered arrangement. The contact dcps of the device-side terminals two positions away that are projected onto the second virtual line C2 form different columns. The device-side data contact dcpd and the device-side ground contact dcpvs are arranged in different columns. Between the projection position swd of the device-side data contact dcpd and the projection position swvs of the device-side ground contact dcpvs, the contact dcp of one of the device-side terminals among the device-side clock contact dcpc, device-side power contact dcpvd, and device-side reset contact dcpr is projected. In this embodiment, the device-side reset contact dcpr and the device-side power contact dcpvd are positioned so that they are projected between the projection position swd of the device-side data contact dcpd and the projection position swvs of the device-side ground contact dcpvs. In this embodiment, the contact dcp of each device-side terminal 410 to 450 is arranged to form a first column R1 and a second column R2, but this is not limited to this. For example, the contact dcp of each device-side terminal 410 to 450 may be arranged to form columns such as 3 or 4.The row can also be formed by the contact portion dcp of a single device-side terminal.

[0082] Let distance DAn be the distance between the device-side ground contact dcpvs and the device-side reset contact dcpr. Let distance DBn be the distance between the device-side data contact dcpd and the device-side clock contact dcpc. Let distance DCn be the distance between the device-side data contact dcpd and the device-side ground contact dcpvs. Let distance DDn be the distance between the device-side data contact dcpd and the device-side reset contact dcpr. Let distance DEn be the distance between the device-side data contact dcpd and the device-side power contact dcpvd. In this case, distance DCn is longer than distance DBn. ​​Distance DCn is longer than distance DEn. Distance DCn is longer than distance DDn. In this embodiment, distance DBn and distance DEn are the same. The distance between the device-side data contact dcpd and the contact dcp of the device-side terminal that is furthest from the device-side data contact dcpd, excluding the device-side ground contact dcpvs, is distance DBn and distance DEn. In this case, distance DAn is longer than distance DBn and distance DEn.

[0083] Let the first line segment fL be the virtual line segment connecting the device-side clock contact dcpc and the device-side data contact dcpd, the second line segment sL be the virtual line segment connecting the device-side reset contact dcpr and the device-side data contact dcpd, and the third line segment tL be the virtual line segment connecting the device-side power contact dcpvd and the device-side data contact dcpd. On the first line segment fL, there are no contact points dcp of other device-side terminals other than the device-side clock contact dcpc and the device-side data contact dcpd. On the second line segment sL, there are no contact points dcp of other device-side terminals other than the device-side reset contact dcpr and the device-side data contact dcpd. On the third line segment tL, there are no contact points dcp of other device-side terminals other than the device-side power contact dcpvd and the device-side data contact dcpd.

[0084] The data terminal 210 can also be called the first terminal. The clock terminal 220 can also be called the second terminal, which is included in the other terminals. The reset terminal 240 can also be called the third terminal, which is included in the other terminals. The power terminal 230 can also be called the fourth terminal, which is included in the other terminals. The ground terminal 250 can also be called the fifth terminal, which is included in the other terminals. The data contact cpd can also be called the first contact. The clock contact cpc can also be called the second contact. The reset contact cpr can also be called the third contact. The power contact cpvd can also be called the fourth contact. The ground contact cpvs can also be called the fifth contact. In addition, terminals other than the first terminal can also be called the other terminal group. Terminals 210 to 250, etc., which are provided on the circuit board 120 or the liquid container 100, can also be called circuit board side terminals or container side terminals.

[0085] The device-side terminal 410 can also be called the first device-side terminal. The device-side terminal 420 can also be called the second device-side terminal. The device-side terminal 430 can also be called the third device-side terminal. The device-side terminal 440 can also be called the fourth device-side terminal. The device-side terminal 450 can also be called the fifth device-side terminal. The projected position of the first device-side terminal 410 can be called the first projected position. The projected position of the second device-side terminal 420 can be called the second projected position. The projected position of the third device-side terminal 430 can be called the third projected position. The projected position of the fourth device-side terminal 440 can be called the fourth projected position. The projected position of the fifth device-side terminal 450 can be called the fifth projected position.

[0086] A2. Explanation of various printing system states: In this disclosure, “mounted state” means the state in which the liquid container 100 is mounted on the printing device 20 and no short circuit occurs between the terminals 290. As described above, in this disclosure, “the liquid container 100 is mounted on the printing device 20” means that the liquid container 100 is physically attached to the printing device 20 and the contact portion cp of the terminal 290 is electrically connected to the device-side terminal 490. The mounted state is a state in which communication is possible between the printing device 20 and the device 130. “Not mounted state” means the state in which the liquid container 100 is not mounted in the housing 4 of the printing device 20, or the state in which the liquid container 100 is attached to the housing 4 of the printing device 20, but there is a poor contact between the device-side terminal 490 and the contact portion cp. “Short circuit state” means the state in which the liquid container 100 is mounted in the housing 4 of the printing device 20, but a short circuit occurs between the terminals 290. For example, if the data terminal 210 and the clock terminal 220 are short-circuited, this is described as "the data terminal 210 and the clock terminal 220 are in a short-circuit state."

[0087] "Connection state" refers to one of the following: (i) installation complete state, (ii) non-installation complete state, or (iii) short-circuit state. "Determination of connection state" means determining which of the above states (i) to (iii) the liquid container 100 is in.

[0088] A3. Electrical and software configuration: A3-1. Electrical configuration: Figure 8 is a schematic diagram showing the electrical configuration of the printing system 1000. In Figure 8, the substrates 120 and devices 130 of the four liquid containers 100A, 100B, 100C, and 100D are distinguished by the suffixes "A", "B", "C", and "D". Each device 130A to 130D stores identification information for the liquid containers 100A to 100D. For example, each device 130A to 130D stores information about the liquid contained in the liquid containers 100A to 100D. In Figure 8, the identification information is represented by ID=1 to 4. The main control unit 40 and the sub-control unit 50 constitute the control unit 39 that controls the operation of the printing device 20.

[0089] The sub-control unit 50 and the liquid containers 100A to 100D are electrically connected by multiple wires. These multiple wires include a reset wire LRST, a clock wire LSCK, a power supply wire LVDD, a data wire LSDA, and a ground wire LVSS. The reset wire LRST, the clock wire LSCK, the power supply wire LVDD, and the data wire LSDA are provided independently for each of the liquid containers 100A to 100D. The ground wire LVSS is provided in common for the liquid containers 100A to 100D. To distinguish between the reset wire LRST, the clock wire LSCK, the power supply wire LVDD, and the data wire LSDA that are electrically connected to the corresponding liquid containers 100A to 100D, the numbers "1" to "4" are added to the end. These "1" to "4" correspond to the identification information "1" to "4" for the liquid containers 100A to 100D.

[0090] In the sub-control unit 50, the terminal that outputs the reset signal RST is designated as the host terminal HRST, the terminal that outputs the clock signal SCK is designated as the host terminal HSCK, the terminal that outputs the power supply voltage VDD is designated as the host terminal HVDD, and the terminal that outputs and inputs the data signal SDA is designated as the host terminal HSDA. The host terminal HVSS is grounded. For the host terminals HSDA, HRST, HSCK, and HVDD, the numbers "1" to "4" are added to the end to distinguish the terminals connected to the corresponding liquid containers 100A to 100D. These "1" to "4" correspond to the identification information "1" to "4" for the liquid containers 100A to 100D. The sub-control unit 50 and the main control unit 40 are electrically connected via bus 46. The sub-control unit 50 transmits various signals and voltages individually to the devices 130A to 130D of the liquid containers 100A to 100D via connection bus 45, which includes lines LRST, LSCK, LVDD, LSDA, and LVSS.

[0091] The reset line LRST is a conductive line used by the control unit 39 to send a reset signal RST to the device 130. The reset signal RST is a signal that makes the device ready to receive the request signal RS, which will be described later. When the reset signal RST that the control unit 39 sends to the device 130 changes from a high level to a low level, the part of the processing unit 136 that receives the request signal RS enters its initial state, and when the reset signal RST changes from a low level to a high level, the device becomes ready to receive a new request signal RS. The clock line LSCK is a conductive line used by the control unit 39 to send a clock signal SCK to the device 130. The clock signal SCK is a signal that alternates between low and high levels at a predetermined period. The data line LSDA is a conductive line used to send and receive the data signal SDA between the control unit 39 and the device 130. The data signal SDA is sent and received in synchronization with the clock signal SCK in order to synchronize between the control unit 39 and the device 130. For example, the data signal SDA is sent and received triggered by the rising or falling edge of the clock signal SCK. The reset signal RST, data signal SDA, and clock signal SCK can take either a high or low level. In the following, a high level is also represented by the sign "H" or "1", and a low level is also represented by the sign "L" or "0". The host terminal HSDA, which is connected to the data line LSDA, is grounded within the sub-control unit 50 via a pull-down resistor. As a result, when no data signal SDA is being transmitted or received between the sub-control unit 50 and the device 130, the drive state of the host terminal HSDA in the sub-control unit 50 is maintained at a low level.

[0092] The grounding wire LVSS is a conductive wire that determines the grounding potential VSS of device 130. The grounding potential VSS is set to, for example, 0V. The power supply wire LVDD is a conductive wire used by the control unit 39 to supply the power supply voltage VDD, which is the operating voltage, to device 130. The power supply voltage VDD is a voltage higher than a predetermined threshold. In this embodiment, the power supply voltage VDD is set to a potential of, for example, about 3.3V relative to the grounding potential VSS. Note that the potential used for the power supply voltage VDD may differ depending on the type of device 130.

[0093] Figure 9 shows the functional configuration of the printing device 20 together with a liquid container 100. The printing device 20 includes a display panel 495, a power supply 441, a main control unit 40, and a sub-control unit 50. The display panel 495 is used to notify the user of the operating status of the printing device 20, errors in liquid containers 100A to 100D, ink consumption stored in device 130, ink color, manufacturing date, etc. When the liquid container 100 is installed, the display panel 495 displays, for example, an indication to the user that the liquid container 100 has been installed, an indication that the printing system 1000 is ready to print, and an indication of the remaining amount of ink contained in the liquid container 100. The display panel 495 is provided, for example, on the operation unit 70 in Figure 2. The power supply 441 is a standard power supply used for logic circuits and has a rating of 3.3V. The voltage from power supply 441 is supplied to sub-control unit 50 and to other circuits as needed.

[0094] The main control unit 40 includes a CPU 415 and a device-side first storage unit 416. The CPU 415 controls the operation of the printing device 20 by executing various programs stored in the device-side first storage unit 416. For example, the main control unit 40 controls the operation of the display panel 495 and the operation of the sub-control unit 50. The CPU 415 functions as a determination unit 411 by executing various programs stored in the device-side first storage unit 416. The determination unit 411 includes a mounting determination unit 412 and a short-circuit determination unit 414. The mounting determination unit 412 determines whether or not the liquid container 100 is mounted. The short-circuit determination unit 414 determines whether or not a short circuit has occurred between the terminals 290. The sub-control unit 50 comprises a switching unit 511 and a device-side second storage unit 516. The switching unit 511 consists of a register (not shown) and an analog switch (not shown) connected to the register. When the CPU 415 writes "1" to the register, the analog switch becomes conductive. This switches the CPU 415 to a connected state with the circuit board 120. When the CPU 415 writes "0" to the register, the analog switch becomes non-conductive. This switches the CPU 415 to a disconnected state with the circuit board 120.

[0095] The device-side second storage unit 516 stores determination information. This determination information is used in the connection status determination process described later. The determination information is information in which the voltage output from the data terminal 210 is used as the detection value in response to the request signal RS described later. When the determination unit 411 executes the connection status determination process, it reads the determination information from the device-side second storage unit 516.

[0096] The sub-control unit 50 transmits a request signal RS to each device 130A to 130D of the liquid containers 100A to 100D via the connection bus 45. The request signal RS is output from the host terminal HSDA of the sub-control unit 50 and input to each data terminal 210 of the liquid containers 100A to 100D. For each device 130A to 130D, the request signal RS includes a command that identifies the liquid container 100A to 100D to which the request signal RS should be responded to. The determination unit 411 uses the voltage output from each data terminal 210 of the liquid containers 100A to 100D in response to the request signal RS to determine the connection status of the liquid containers 100A to 100D. Details of the request signal RS will be described later.

[0097] The processing unit 136 of device 130 communicates with the printing device 20 via the data line LSDA in synchronization with the clock signal SCK input to the clock terminal 220 from the printing device 20. For example, signals are sent and received triggered by the rising or falling edge of the clock signal SCK. The processing unit 136 controls the signals and voltages input and output to terminals 210 to 250. For example, in response to the request signal RS, it outputs response signals FS and SS to the data terminal 210 via the data line LSDA. The processing unit 136 includes a three-state buffer. The three-state buffer has three operating states: a state that outputs a low-level voltage, a state that outputs a high-level voltage, and a high-impedance state. The three-state buffer is connected to the data terminal 210. Hereinafter, in this disclosure, the terms "low-level," "high-level," and "high-impedance" are used to indicate the operating states of the data terminal 210. The storage unit 138 is composed of a memory cell array in which multiple memory cells are arranged in a two-dimensional matrix. The processing unit 136 and the storage unit 138 are connected by bit lines and word lines. The processing unit 136 is electrically connected to terminals 210-250 and the storage unit 138.

[0098] A3-2. Overview of the software configuration (connection status determination process): The connection status determination process performed by the printing system 1000 will be explained with reference to Figures 10A and 10B. Figure 10A is a flowchart of the process performed by the printing device 20 as part of the connection status determination process. Figure 10B is a flowchart of the process performed by the device 130 as part of the connection status determination process.

[0099] As shown in Figure 10A, in the connection status determination process, the printing device 20 performs the following processes. In step S301, the sub-control unit 50 sends a request signal RS to the device 130 of the liquid container 100. Subsequently, the sub-control unit 50 detects the voltage output from the data terminal 210 of the liquid container 100. Specifically, in step S302, the sub-control unit 50 detects the voltage output from the data terminal 210 of the liquid container 100 at a predetermined first timing t1. In step S303, the sub-control unit 50 detects the voltage output from the data terminal 210 of the liquid container 100 at a predetermined second timing t2. In step S304, the sub-control unit 50 detects the voltage output from the data terminal 210 of the liquid container 100 at a predetermined third timing t3. The first timing t1 to the third timing t3 are all different timings. The voltage detected by the sub-control unit 50 during the first timing t1 to the third timing t3 is stored as a detected value in the device-side second storage unit 516 of the sub-control unit 50. In step S305, the determination unit 411 of the main control unit 40 reads the detected value from the device-side second storage unit 516. In step S306, the main control unit 40 determines the connection status based on the detected value detected by the sub-control unit 50 during the first timing t1 to the third timing t3.

[0100] As shown in Figure 10B, in the connection status determination process, device 130 performs the following processing. In step S101, the processing unit 136 of device 130 determines whether a request signal RS has been input to the data terminal 210 from the printing device 20. If it is determined that a request signal RS has been input to the data terminal 210, in step 102, the processing unit 136 of device 130 determines whether it is being requested to respond to the printing device 20. If it is determined that it is being requested to respond to the printing device 20, the processing unit 136 of device 130 outputs a first response signal FS to the data terminal 210 in step S103. After outputting the first response signal FS, the processing unit 136 of device 130 outputs a second response signal SS to the data terminal 210 in step S104. The first response signal FS and the second response signal SS are output from the data terminal 210 to the printing device 20. If, in step S102, it is determined that no response is requested from the printing device 20, the processing unit 136 of the device 130 terminates processing.

[0101] Referring to Figures 11A to 11D, the overview and output timing of the request signal RS, the first response signal FS, and the second response signal SS will be explained. Figure 11A is a timing chart when the printing device 20 outputs the request signal RS to the data terminal 210. Figure 11B is a timing chart when the device 130 outputs the first response signal FS and the second response signal SS to the data terminal 210. Figure 11C is a diagram showing the details of the first response signal FS. Figure 11D is a diagram showing the details of the second response signal SS. The timing chart in Figure 11B is executed following the timing chart in Figure 11A. In Figures 11A to 11D, "H" indicates that the signal is at a high level, and "L" indicates that the signal is at a low level. The dotted line indicates that the drive state of terminal 290 is high impedance, and that no signal is output from terminal 290. Note that the host terminal HSDA of the sub-control unit 50 is grounded via a pull-down resistor. Therefore, the control unit 39 cannot distinguish between the drive state of terminal 290 being high impedance and no signal being output from terminal 290, and the output of a low-level voltage from terminal 290. However, for example, by using a pull-up resistor connecting the data terminal 210 and the power terminal 230, it can be confirmed that the drive state of data terminal 290 is high impedance. VDD, RST, SCK, and SDA1~SDA4 shown in Figure 11A, etc., represent the signals transmitted or received or the voltages supplied via the corresponding terminal 290 by the corresponding lines LVDD, LRST, LSCK, and LSDA1~LSDA4. Cycles D1~D9 in the command period CMT, the first response period RT1, and the second response period RT2 represent a unit period in which the low and high levels of the clock signal SCK are repeated in each period. The clock signal SCK in this unit period is called the "period".

[0102] The timing charts shown in Figures 11A and 11B are executed at predetermined timings. These predetermined timings include, for example, the timing when the printer 20 is started and the power supply 441 is turned ON, the timing when the liquid container 100 is replaced, the timing when instructions are received from the user, and the timing when the printer 20 is not printing and the carriage 30 is in the home position. Below, we will explain an example of execution triggered by the timing when the power supply 441 is turned ON.

[0103] As shown in Figure 11A, the control unit 39 first sets the power supply voltage VDD to a high level. After the power supply voltage VDD has reached a high level, the control unit 39 sets the reset signal RST from a low level to a high level after a predetermined time has elapsed. After setting the reset signal RST to a high level, the control unit 39 sends a clock signal SCK to the device 130. After setting the reset signal RST to a high level, the control unit 39 sends a request signal RS to the device 130. The request signal RS includes a first execution command BCC1, first identification data DB1, first parity data P1, second execution command BCC2, second identification data DB2, and second parity data P2.

[0104] The request signal RS will be explained in detail. After setting the reset signal RST to a high level, the control unit 39 sends the first execution command BCC1 to devices 130A to 130D during cycles D1 and D2 of the command period CMT. The first execution command BCC1 is a 2-bit data command that indicates that the main control unit 40 will perform connection status determination processing. The control unit 39 generates the first execution command BCC1 by setting the voltage to a high level in cycle D1 and to a low level in cycle D2.

[0105] Following the first execution command BCC1, the control unit 39 transmits the first identification data DB1 to devices 130A to 130D in cycles D3 to D8. The first identification data DB1 is 6 bits of data that identify the liquid containers 100A to 100D requesting a response. In the first identification data DB1, each device 130A to 130D is assigned a corresponding bit. The first bit in cycle D3 and the second bit in cycle D4 can be used in other embodiments when the printing apparatus 20 is equipped with six liquid containers 100. In the first identification data DB1, the third bit in cycle D5 corresponds to liquid container 100D, the fourth bit in cycle D6 corresponds to liquid container 100C, the fifth bit in cycle D7 corresponds to liquid container 100B, and the sixth bit in cycle D8 corresponds to liquid container 100A. The first identification data DB1 transmitted to device 130A of liquid container 100A is high level in the 6th bit, cycle D8, and the remaining bits are low level. The first identification data DB1 transmitted to device 130B of liquid container 100B is high level in the 5th bit, cycle D7, and the remaining bits are low level. The first identification data DB1 transmitted to device 130C of liquid container 100C is high level in the 4th bit, cycle D6, and the remaining bits are low level. The first identification data DB1 transmitted to device 130D of liquid container 100D is high level in the 3rd bit, cycle D5, and the remaining bits are low level. The request signal RS has a different waveform for each device 130A to 130D of liquid containers 100A to 100D.

[0106] Following the first identification data DB1, the control unit 39 transmits the first parity data P1 to devices 130A to 130D in cycle D9. The first parity data P1 is a 1-bit data. In this embodiment, the first parity data P1 is odd parity.

[0107] Following the first parity data P1, the control unit 39 sends a 2-bit second execution command BCC2 to devices 130A to 130D. The second execution command BCC2 is the same data as the first execution command BCC1, but without inversion. Following the second execution command BCC2, the control unit 39 sends a 6-bit second identification data DB2 to devices 130A to 130D. The second identification data DB2 is the same data as the first identification data DB1, but without inversion. Following the second identification data DB2, the control unit 39 sends a 1-bit second parity data P2 to devices 130A to 130D.

[0108] The first execution command BCC1, the first identification data DB1, and the first parity data P1 are collectively referred to as the first command. The second execution command BCC2, the second identification data DB2, and the second parity data P2 are collectively referred to as the second command. The period during which the control unit 39 transmits the first command to the device 130 within the command period CMT is also referred to as the first command period. The period during which the control unit 39 transmits the second command to the device 130 within the command period CMT is also referred to as the second command period. The first command and the second command are identical data that has not been inverted. In other embodiments, the first command and the second command may be inverted relative to each other.

[0109] As described above, the power supply voltage VDD is first input to the power terminal 230 from the printer 20 to the device 130. After the power supply voltage VDD is input to the power terminal 230 from the printer 20 to the device 130, the reset signal RST changes from a low reset voltage to a high reset voltage, and the high reset voltage is input to the reset terminal 240 from the printer 20 to the device 130. After the high reset voltage is input to the reset terminal 240 from the printer 20 to the device 130, the clock signal SCK is input to the clock terminal 220 from the printer 20 to the device 130. After the high reset voltage is input to the reset terminal 240 from the printer 20 to the device 130, the request signal RS is input to the data terminal 210 from the printer 20. Here, the power supply voltage VDD is a voltage as a high level that is higher than the threshold. The reset signal RST is a signal that includes a low reset voltage as a low level and a high reset voltage as a high level that is higher than the low reset voltage. The low reset voltage is a voltage lower than the reference reset voltage as a threshold, and the high reset voltage is a voltage higher than the reference reset voltage as a threshold. The reference reset voltage is the voltage used as a reference to determine high and low levels. The clock signal SCK is a signal in which a low clock voltage (low level) and a high clock voltage (higher than the low clock voltage) alternate and repeat at a predetermined period. The low clock voltage is a voltage lower than the reference clock voltage (threshold), and the high clock voltage is a voltage higher than the reference clock voltage (threshold). The reference clock voltage is the voltage used as a reference to determine high and low levels. Each threshold is set, for example, between the potential of power supply 441 and the ground potential.

[0110] As shown in Figure 11B, after the request signal RS is transmitted from the control unit 39 to the device 130, the device 130, which has been requested to respond to the printing device 20, outputs a first response signal FS and a second response signal SS to the data terminal 210. The first response signal RT1 and the second response signal RT2 are signals used by the printing device 20 to determine that the data terminal 210 is not short-circuited to the clock terminal 220, the power terminal 230, and the reset terminal 240, and that the liquid container 100 is mounted on the printing device 20. The request signal RS has a waveform that individually specifies the liquid containers 100A to 100D in the first identification data DB1. When a device 130A to 130D receives a request signal RS to which it has been specified from the printing device 20, it outputs a first response signal FS and a second response signal SS to the data terminal 210. The first response signal FS is output during the first response period RT1. The second response signal SS is output during the second response period RT2, which is the period following the first response period RT1.

[0111] In the first response period RT1, the direction switching process for the signals transmitted and received by the printing device 20 via the data line LSDA is first performed in cycles D1 and D2. After the control unit 39 sends the request signal RS to the device 130, in cycle D1, it decharges the data line LSDA by setting its potential to 0V. Then, in cycle D2, the control unit 39 sets the drive state of the host terminal HSDA of the sub-control unit 50 to high impedance. This makes the printing device 20 ready to receive signals. Meanwhile, the processing unit 136 of the device 130 receives the request signal RS in synchronization with the clock signal SCK, and in cycle D1, sets the drive state of each data terminal 210 to high impedance. This is to prevent signals from being output from the data terminals 210 while the data line LSDA is being decharged by the control unit 39 of the printing device 20. Similarly, in cycle D2, the processing unit 136 of the device 130 sets the drive state of the data terminals 210 to high impedance. The first two bits of this first response period RT1 also function as dummy bits to ensure that the number of bits in the request signal RS and the signal in the first response period RT1 are the same. The number of cycles of the clock signal SCK that constitutes the first response period RT1 is the same as the number of cycles of the clock signal SCK that the request signal RS is synchronized with.

[0112] Next, in cycles D3 to D8, the processing unit 136 of each device 130 outputs a first response signal FS to the data terminal 210 at predetermined timings. The first response signal FS is output from different processing units 136A to 136D for each period of the clock signal SCK. The first response signal FS includes a low-level voltage. As shown in Figure 11C, the first response signal FS is the signal output to the data terminal 210 during the period when the clock signal SCK is high-level. The first response signal FS is low-level during the period when the clock signal SCK is high-level. The processing unit 136 of device 130 outputs a low-level voltage to the data terminal 210 when the voltage input to the clock terminal 220 changes from a low level to a high level.

[0113] As described above, the first response signal FS includes a low first response voltage as a low level, which is lower than the reference first response voltage as a threshold. The reference first response voltage is a reference voltage for determining low and high levels, and is set, for example, between the voltage of power supply 441 and the voltage of ground potential.

[0114] As shown in Figure 11B, the first timing t1 is set to the period when the clock signal SCK is high level in each of cycles D3 to D8 of the first response period RT1. The first timing t1 is set to the period when the first response signal FS is low level. As shown in Figure 11C, in one period of the clock signal SCK, the device 130 outputs a low-level voltage to the data terminal 210 before the first timing t1, during the period when the clock signal SCK is high level.

[0115] As shown in Figure 11B, cycle D9 of the first response period RT1 functions as a dummy bit to make the number of bits in the first command period and the first response period RT1 the same.

[0116] In the second response period RT2, as shown in Figure 11B, the control unit 39 removes the charge from the data line LSDA by setting its potential to 0V. In cycle D1, the processing unit 136 of device 130 sets the drive state of the data terminal 210 to high impedance. In cycle D2, the processing unit 136 of device 130 also sets the drive state of the data terminal 210 to high impedance. The first two bits of this second response period RT2 also function as dummy bits to make the number of bits in the request signal RS and the signal of the second response period RT2 the same. The number of cycles of the clock signal SCK that constitutes the second response period RT2 is the same as the number of cycles of the clock signal SCK that the request signal RS is synchronized with.

[0117] Next, in cycles D3 to D8, the processing unit 136 of each device 130 outputs a second response signal SS to the data terminal 210 at predetermined timings. The second response signal SS is output from different processing units 136A to 136D for each period of the clock signal SCK. The second response signal SS includes both a low-level voltage and a high-level voltage. As shown in Figure 11D, the waveform of the second response signal SS is in opposite phase to the waveform of the clock signal SCK input to the clock terminal 220. The second response signal SS includes a high level during periods when the clock signal SCK is low, and includes a low level during periods when the clock signal SCK is high.

[0118] As described above, the second response signal SS includes a low second response voltage as a low level and a high second response voltage as a high level that is higher than the low second response voltage. The low second response voltage is a voltage lower than the reference second response voltage as a threshold, and the high second response voltage is a voltage higher than the reference second response voltage as a threshold. The reference second response voltage is a reference voltage for determining low and high levels, and is set, for example, between the voltage of the power supply 441 and the voltage of ground potential. The reference second response voltage may be the same as or different from the reference first response voltage. The waveform of the second response signal SS is different from the waveform of the first response signal FS.

[0119] As shown in Figure 11B, the second timing t2 is set during the period when the clock signal SCK is low level in each of cycles D3 to D8 of the second response period RT2. The second timing t2 is set during the period when the second response signal SS is high level. The third timing t3 is set during the period when the clock signal SCK is high level in each of cycles D3 to D8 of the second response period RT2. The third timing t3 is set during the period when the second response signal SS is low level. As shown in Figure 11D, in one period of the clock signal SCK, the device 130 outputs a high-level voltage to the data terminal 210 before the second timing t2 during the period when the clock signal SCK is low level. In one period of the clock signal SCK, the device 130 outputs a low-level voltage to the data terminal 210 before the third timing t3 during the period when the clock signal SCK is high level.

[0120] As shown in Figure 11B, cycle D9 of the second response period RT2 functions as dummy bit data to make the number of bits in the second command period and the second response period RT2 the same.

[0121] For each device 130A to 130D of the liquid containers 100A to 100D, the output periods of the first response signal FS and the second response signal SS differ. In this embodiment, device 130 outputs the first response signal FS and the second response signal SS in one period of the clock signal SCK corresponding to the identification information. As shown in Figure 11B, liquid container 100A outputs the first response signal FS and the second response signal SS to the data terminal 210 in each cycle D8 of the first response period RT1 and the second response period RT2. Liquid container 100B outputs the first response signal FS and the second response signal SS to the data terminal 210 in each cycle D7 of the first response period RT1 and the second response period RT2. Liquid container 100C outputs the first response signal FS and the second response signal SS to the data terminal 210 in each cycle D6 of the first response period RT1 and the second response period RT2. The liquid container 100D outputs the first response signal FS and the second response signal SS to the data terminal 210 during each cycle D5 of the first response period RT1 and the second response period RT2.

[0122] As shown in Figure 11B, when a clock signal SCK having a predetermined number of periods is input to the clock terminal 220, device 130 outputs a first response signal FS by switching the drive state of the data terminal 210 from high impedance to low level. For example, as shown in Figure 11B, when a clock signal SCK is input to the clock terminal 220 during cycles D1 to D7 in the first response period RT1, device 130A outputs a first response signal FS by switching the drive state of the data terminal 210 from high impedance to low level. Device 130 terminates the output of the first response signal FS by switching the state of the data terminal 210 from low level to high impedance. For example, as shown in Figure 11B, after outputting the first response signal FS during cycle D8 in the first response period RT1, device 130A terminates the output of the first response signal FS by switching the drive state of the data terminal 210 to high impedance.

[0123] As shown in Figure 11B, when a clock signal SCK having a predetermined number of periods is input to the clock terminal 220, device 130 outputs a second response signal SS by switching the drive state of the data terminal 210 from high impedance to high level. For example, as shown in Figure 11B, when the clock signal SCK is input to the clock terminal 220 during cycles D1 to D7 in the second response period RT2, device 130A outputs a second response signal SS by switching the drive state of the data terminal 210 from high impedance to high level. Device 130 terminates the output of the second response signal SS by switching the drive state of the data terminal 210 from low level to high impedance. For example, as shown in Figure 11B, after outputting the second response signal FS in cycle D8 of the second response period RT2, device 130A terminates the output of the second response signal SS by switching the drive state of the data terminal 210 from low level to high impedance.

[0124] As described above, after the request signal RS is input to the data terminal 210, device 130 outputs a first response signal FS to the data terminal 210, and after outputting the first response signal FS, outputs a second response signal SS to the data terminal 210. When the data terminal 210 is not short-circuited with the clock terminal 220, the power terminal 230, and the reset terminal 240, device 130 performs the following: As shown in Figure 11C, at a predetermined first timing t1 during a period when the voltage input to the clock terminal 210 is a high clock voltage, device 130 outputs a low first response voltage to the data terminal 210 as a first expected value. As shown in Figure 11D, after outputting the low first response voltage, at a second timing t2 when the voltage input to the clock terminal 210 is a low clock voltage, device 130 outputs a high second response voltage to the data terminal 210 as a second expected value. As shown in Figure 11D, after outputting a high second response voltage, device 130 outputs a low second response voltage to the data terminal 210 as a third expected value at a third timing t3 where the voltage input to the clock terminal 210 is a high clock voltage.

[0125] The first response signal FS consists of a low level. The low level of the first response signal FS indicates that the data terminal 210 is not short-circuited with terminals 220, 230, 240, and 250 other than the data terminal 210. The second response signal SS consists of a high level and a low level. The high level of the second response signal SS indicates that the liquid container 100 is attached to the printing device 20. The low level of the second response signal SS indicates that the data terminal 210 is not short-circuited with terminals 220, 230, 240, and 250 other than the data terminal 210.

[0126] A3-3. Details of the software configuration (connection status determination process): Referring to Figure 12, the connection status determination process performed by the main control unit 40 will be explained. Figure 12 is a diagram showing an overview of the connection status determination process performed by the main control unit 40. As shown in Figure 12, the main control unit 40 determines the connection status using a combination of voltages output from the data terminal 210 of the liquid container 100 at the first timing t1 to the third timing t3. The first timing t1 to the third timing t3 are assigned to periods of cycle D5 to D8 according to the liquid containers 100A to 100D, as explained using Figure 11B above. The expected value of the voltage output from the data terminal 210 of the liquid container 100 at each of the first timing t1 to the third timing t3 is the voltage output from the data terminal 210 when the liquid container 100 is in the installed state, and is low level at the first timing t1, high level at the second timing t2, and low level at the third timing t3. The determination unit 414 of the main control unit 40 determines that the liquid container 100 is installed and that "container present" is present if the voltage output from the data terminal 210 of the liquid container 100 is the same as the expected value (first case).

[0127] If the voltage output from the data terminal 210 of the liquid container 100 is low level at each of the first timings t1 to the third timing t3, the determination unit 414 of the main control unit 40 determines that the liquid container 100 is in an unattached state and that there is "no container".

[0128] If the voltage output from the data terminal 210 of the liquid container 100 is high level at the first timing t1, low level at the second timing t2, and high level at the third timing t3, the determination unit 414 of the main control unit 40 determines that the data terminal 210 and the clock terminal 220 are short-circuited and that there is a "short circuit". When the data terminal 210 and the clock terminal 220 are short-circuited, the voltage at the data terminal 210 will be approximately the same as the voltage at the clock terminal 220. Similar to the clock signal SCK in Figure 11B, the voltage output from the data terminal 210 of the liquid container 100 will be high level at the first timing t1, low level at the second timing t2, and high level at the third timing t3. Thus, when the data terminal 210 and the clock terminal 220 are short-circuited among the data terminal 210, power terminal 230, reset terminal 240, and clock terminal 220, the signal output from the data terminal 210 connected to the device 130 to the control unit 39 of the printing device 20 at the first timing t1 to the third timing t3 is configured as follows: The voltage output from the data terminal 210 differs from the first expected value at the first timing t1, from the second expected value at the second timing t2, and from the third expected value at the third timing t3.

[0129] In the fourth case, when the voltage output from the data terminal 210 of the liquid container 100 is high at each of the first timings t1 to the third timing t3, the determination unit 414 of the main control unit 40 determines that there is a short circuit, because at least one of the following is true: the data terminal 210 and the power terminal 230 are short-circuited, or the data terminal 210 and the reset terminal 240 are short-circuited. When the data terminal 210 and the power terminal 230 are short-circuited, or when the data terminal 210 and the reset terminal 240 are short-circuited, the voltage at the data terminal 210 is approximately the same as the voltage at the power terminal 230 or the reset terminal 240. As shown in Figure 11B, in the first response period RT1 and the second response period RT2, the power terminal 230 and the reset terminal 240 are high-level, so the voltage output from the data terminal 210 of the liquid container 100 is high at each of the first timings t1 to the third timing t3. Thus, among the data terminal 210, power terminal 230, reset terminal 240, and clock terminal 220, when the data terminal 210 and power terminal 230 are short-circuited, and when the data terminal 210 and reset terminal 240 are short-circuited, the voltage output from the data terminal 210 connected to the device 130 to the control unit 39 of the printing device 20 at the first timing t1 to the third timing t3 is configured as follows: The signal output from the data terminal 210 differs from the first expected value at the first timing t1, is the same as the second expected value at the second timing t2, and differs from the third expected value at the third timing t3.

[0130] As described above, the printing device 20 first detects at the first timing t1 that there is no short circuit between the data terminal 210 and the other terminals 220, 230, 240, and 250. Then, at the second timing t2, it detects that the liquid container 100 is installed in the printing device 20. Furthermore, at the third timing t3, it confirms again that there is no short circuit between the data terminal 210 and the other terminals 220, 230, 240, and 250. By detecting the voltage output from the data terminal 210 at timings t1 to t3, it is confirmed that the liquid container 100 is fully installed. As will be described later, it is also conceivable that a short circuit between the data terminal 210 and the other terminals 220, 230, and 240 may occur within the first response period RT1 and the second response period RT2. By detecting that there is no short circuit between the data terminal 210 and the other terminals 220, 230, 240, and 250 at the first timing t1, which is before the second timing t2, and at the third timing t3, which is after the second timing t2, it is possible to accurately confirm that the liquid container 100 is fully installed. Thus, the installation detection mechanism for the liquid container 100 and the short-circuit detection mechanism between the terminals 290 can be recognized as independent configurations.

[0131] When the printing device 20 detects that the data terminal 210 and the clock terminal 220 are not short-circuited, it is necessary to be able to distinguish between the voltage detected by the printing device 20 when the data terminal 210 and the clock terminal 220 are short-circuited and the voltage detected by the printing device 20 when the data terminal 210 and the clock terminal 220 are not short-circuited. One cycle of the clock signal SCK has a low-level period and a high-level period. In a configuration where device 130 outputs the same voltage to the data terminal 210 as the high-level voltage during the low-level period in one cycle when the data terminal 210 and the clock terminal 220 are not short-circuited, device 130 will also output the same voltage as the high-level voltage when the data terminal 210 and the clock terminal 220 are short-circuited. As a result, the printing device 20, which detects the output from the data terminal 210, will not be able to distinguish whether the data terminal 210 and the clock terminal 220 are not short-circuited or whether they are short-circuited. During the first timing t1 to the third timing t3, the device 130 outputs a voltage to the data terminal 210 that is different from the voltage of the clock signal SCK. This allows the printing device 20 to distinguish between the voltage detected by the printing device when the data terminal 210 and the clock terminal 220 are short-circuited and the voltage detected by the printing device when the data terminal 210 and the clock terminal 220 are not short-circuited. The same applies when the data terminal 210 and the power terminal 230 are short-circuited, and when the data terminal 210 and the reset terminal 240 are short-circuited.

[0132] Refer to Figures 13A to 20C to explain specific examples of the connection status determination process. In the following examples 1 to 9, a single liquid container 100A is used as an example. In examples 2 to 9, the waveforms shown in Figures 13A to 20B schematically represent examples of the voltage at terminal 290 that is actually observed. The control unit 39 recognizes the voltage output from the data terminal 210 as either high level or low level based on a predetermined threshold.

[0133] (First example) The first specific example describes the case where the liquid container 100A is in the installed state. Figure 13A is the first timing chart of the connection state determination process. Figure 13B is the second timing chart of the connection state determination process. As shown in Figure 13A, the sub-control unit 50 sends a request signal RS to the device 130A of the liquid container 100A during the command period CMT. The request signal RS sent to the device 130A has a high level bit in cycle D8 to specify the target liquid container 100A. As shown in Figure 13B, in the installed state, the sub-control unit 50 detects a low level at the first timing t1 of cycle D8 in the first response period RT1, a high level at the second timing t2 of cycle D8 in the second response period RT2, and a low level at the third timing t3 of cycle D8 in the second response period RT2 from the data terminal 210. In this case, the determination unit 421 of the main control unit 40 determines that the liquid container 100A has a container because the expected value and the detected value are the same at each of the first timing t1 to the third timing t3.

[0134] (Second specific example) The second specific example describes the connection status determination process when a short circuit occurs between the data terminal 210 and the clock terminal 220. Figure 14A is the third timing chart for the connection status determination process. Figure 14B is the fourth timing chart for the connection status determination process. In Figure 14A, assume that a short circuit occurs between the data terminal 210 and the clock terminal 220 of the liquid container 100A at timing ta before the command period CMT. As shown in Figure 14B, the change in voltage output from the data terminal 210 is the same as the signal from the clock terminal 220. The sub-control unit 50 detects a high level from the data terminal 210 at the first timing t1 of cycle D8 in the first response period RT1, a low level at the second timing t2 of cycle D8 in the second response period RT2, and a high level at the third timing t3 of cycle D8 in the second response period RT2. In this case, the data terminal 210 and the clock terminal 220 are in a short circuit state, and the determination unit 411 of the main control unit determines that "short circuit present".

[0135] (Third specific example) The third specific example describes the connection status determination process when a short circuit occurs between the data terminal 210 and the clock terminal 220. The third specific example differs from the second specific example in that the short circuit between the data terminal 210 and the clock terminal 220 occurs after the device 130 receives the request signal RT. Figure 15 is the fifth timing chart of the connection status determination process. Assume that a short circuit occurs between the data terminal 210 and the clock terminal 220 of the liquid container 100A at timing tb of the first response period RT1. In this case, the signal output from the data terminal 210 will be the same as the signal from the clock terminal 220. Therefore, the sub-control unit 50 detects a high level from the data terminal 210 at the first timing t1 of cycle D8 in the first response period RT1, a low level at the second timing t2 of cycle D8 in the second response period RT2, and a high level at the third timing t3 of cycle D8 in the second response period RT2. In this case, the data terminal 210 and the clock terminal 220 of the liquid container 100A are short-circuited, and the determination unit 411 of the main control unit 40 determines that there is a short circuit.

[0136] (Fourth specific example) The fourth specific example describes the connection status determination process when a short circuit occurs between the data terminal 210 and the power terminal 230. Figure 16A is the sixth timing chart for the connection status determination process. Figure 16B is the seventh timing chart for the connection status determination process. In Figures 16A and 16B, it is assumed that a short circuit occurs between the data terminal 210 and the power terminal 230 of the liquid container 100A at timing ta before the command period CMT. As shown in Figure 16B, the change in voltage output from the data terminal 210 becomes the same as the signal from the power terminal 230. The sub-control unit 50 detects a high level from the data terminal 210 at the first timing t1 of cycle D8 in the first response period RT1, a high level at the second timing t2 of cycle D8 in the second response period RT2, and a high level at the third timing t3 of cycle D8 in the second response period RT2. In this case, the data terminal 210 and the power terminal 230 of the liquid container 100A are in a short-circuit state, and the determination unit 411 of the main control unit 40 determines that there is a short circuit.

[0137] (Fifth specific example) The fifth specific example describes the process for determining the connection status when a short circuit occurs between the data terminal 210 and the power terminal 230. The fifth specific example differs from the fourth specific example in that the short circuit between the data terminal 210 and the power terminal 230 occurs after the device 130 receives the request signal RS. Figure 17 is the eighth timing chart for the connection status determination process. Assume that a short circuit occurs between the data terminal 210 and the power terminal 230 of the liquid container 100A at timing tb of the first response period RT1. In this case, the signal output from the data terminal 210 will be the same as the signal from the power terminal 230. Therefore, the sub-control unit 50 detects a high level from the data terminal 210 at the first timing t1 of cycle D8 in the first response period RT1, a high level at the second timing t2 of cycle D8 in the second response period, and a high level at the third timing t3 of cycle D8 in the second response period. In this case, the data terminal 210 and the power terminal 230 of the liquid container 100A are in a short-circuit state, and the determination unit 411 of the main control unit 40 determines that there is a short circuit.

[0138] (Specific example #6) The sixth specific example describes the connection status determination process when a short circuit occurs between the data terminal 210 and the reset terminal 240. Figure 18A is the ninth timing chart for the connection status determination process. Figure 18B is the tenth timing chart for the connection status determination process. In Figures 18A and 18B, it is assumed that a short circuit occurs between the data terminal 210 and the reset terminal 240 of the liquid container 100A at timing ta before the command period CMT. As shown in Figure 18B, the change in voltage output from the data terminal 210 is the same as the signal from the reset terminal 240. Therefore, the sub-control unit 50 detects a high level from the data terminal 210 at the first timing t1 of cycle D8 in the first response period, a high level at the second timing t2 of cycle D8 in the second response period, and a high level at the third timing t3 of cycle D8 in the second response period. In this case, the data terminal 210 and the reset terminal 240 are in a short-circuit state for the liquid container 100A, and the determination unit 411 of the main control unit 40 determines that "a short circuit exists".

[0139] (7th specific example) The seventh specific example describes the connection status determination process when a short circuit occurs between the data terminal 210 and the reset terminal 240. The seventh specific example differs from the sixth specific example in that the short circuit between the data terminal 210 and the reset terminal 240 occurs after the device 130 receives the request signal RS. Figure 19 is the eleventh timing chart of the connection status determination process. Assume that a short circuit occurs between the data terminal 210 and the reset terminal 240 of the liquid container 100A at timing tb of the first response period RT1. In this case, the signal output from the data terminal 210 will be the same as the signal from the reset terminal 240. Therefore, the sub-control unit 50 detects a high level from the data terminal 210 at the first timing t1 of cycle D8 in the first response period, a high level at the second timing t2 of cycle D8 in the second response period, and a high level at the third timing t3 of cycle D8 in the second response period. In this case, the data terminal 210 and the reset terminal 240 of the liquid container 100A are in a short-circuit state, and the determination unit 411 of the main control unit 40 determines that "a short circuit exists".

[0140] (Example 8) The eighth specific example describes the case where the liquid container 100A is in an uninstalled state. More specifically, the eighth specific example describes the case where the liquid container 100A is removed from the housing 4 before the device 130A receives the request signal RS. Figure 20A is the twelfth timing chart of the connection state determination process. When the liquid container 100A is not installed in the housing 4, the drive state of the host terminal HSDA1 of the sub-control unit 50 becomes low due to the connected pull-down resistor. Therefore, the sub-control unit 50 detects a low level at the first timing t1 of cycle D8 in the first response period RT1, a low level at the second timing t2 of cycle D8 in the second response period RT2, and a low level at the third timing t3 of cycle D3 in the second response period RT2. In this case, the liquid container 100A is in an uninstalled state, and the determination unit 421 of the main control unit 40 determines "no container".

[0141] (Specific example #9) The ninth specific example describes the case where the liquid container 100A is removed from the container 4 during the first response period RT1. Figure 20B is the 13th timing chart of the connection status determination process. The sub-control unit 50 detects a low level at the first timing t1 of cycle D8 in the first response period RT1, a low level at the second timing t2 of cycle D8 in the second response period RT2, and a low level at the third timing t3 of cycle D8 in the second response period RT2. In this case, the liquid container 100A is in a non-installation state, and the determination unit 421 of the main control unit 40 determines "no container".

[0142] (Other specific examples) Other specific examples will explain various connection states and the determination results by the determination unit 421 for each connection state. Figure 20C is a diagram illustrating another specific example of the connection state determination process. In the connection state determination process, if at least one of the detected values ​​at the first timing t1 and the third timing t3 differs from the expected value, the determination unit 411 of the main control unit 40 determines that there is a short circuit.

[0143] In case No. 1, the data terminal 210 and the clock terminal 220 are short-circuited at a timing t prior to the first timing t1. In this case, the circuit board 120 outputs a high-level voltage from the data terminal 210 to the printing device 20 at the first timing t1 that is different from the first expected value, a low-level voltage at the second timing t2 that is different from the second expected value, and a high-level voltage at the third timing t3 that is different from the third expected value. In this case, the determination unit 411 determines that there is a short circuit.

[0144] In case No. 2, the data terminal 210 and the clock terminal 220 are short-circuited at a timing t between the first timing t1 and the second timing t2. In this case, the circuit board 120 outputs a low-level voltage from the data terminal 210 to the printing device 20 at the first timing t1 that is the same as the first expected value, at the second timing t2 that is a low-level voltage different from the second expected value, and at the third timing t3 that is a high-level voltage different from the third expected value. In this case, the determination unit 411 determines that there is a short circuit.

[0145] In case No. 3, the data terminal 210 and the clock terminal 220 are short-circuited at a timing t between the second timing t2 and the third timing t3. In this case, the circuit board 120 outputs a low-level voltage from the data terminal 210 to the printing device 20 at the first timing t1 that is the same as the first expected value, a high-level voltage at the second timing t2 that is the same as the second expected value, and a high-level voltage at the third timing t3 that is different from the third expected value. In this case, the determination unit 411 determines that there is a short circuit.

[0146] In case No. 4, the short circuit between the data terminal 210 and the clock terminal 220 is resolved at a timing t between the first timing t1 and the second timing t2. In this case, the circuit board 120 outputs a high-level voltage from the data terminal 210 to the printing device 20 at the first timing t1 that is different from the first expected value, at the second timing t2 that is the same high-level voltage as the second expected value, and at the third timing t3 that is the same low-level voltage as the third expected value. In this case, the determination unit 411 determines that "a short circuit exists".

[0147] In case No. 5, the short circuit between the data terminal 210 and the clock terminal 220 is resolved at a timing t between the second timing t2 and the third timing t3. In this case, the board 120 outputs a high-level voltage from the data terminal 210 to the printing device 20 at the first timing t1 that is different from the first expected value, a low-level voltage at the second timing t2 that is different from the second expected value, and a low-level voltage at the third timing t3 that is the same as the third expected value. In this case, the determination unit 411 determines that "a short circuit exists".

[0148] In the case of No. 6, at a timing t prior to the first timing t1, at least one of the following occurs: the data terminal 210 and the power terminal 230 are short-circuited, or the data terminal 210 and the reset terminal 240 are short-circuited. In this case, the circuit board 120 outputs a high-level voltage from the data terminal 210 to the printing device 20 at the first timing t1 that is different from the first expected value, at the second timing t2 that is the same as the second expected value, and at the third timing t3 that is different from the third expected value. In this case, the determination unit 411 determines that there is a short circuit.

[0149] In the case of No. 7, at least one of the following occurs: either the data terminal 210 and the power terminal 230 are short-circuited, or the data terminal 210 and the reset terminal 240 are short-circuited, at a timing t between the first timing t1 and the second timing t2. In this case, the circuit board 120 outputs a low-level voltage from the data terminal 210 to the printing device 20 at the first timing t1 that is the same as the first expected value, a high-level voltage at the second timing t2 that is the same as the second expected value, and a high-level voltage at the third timing t3 that is different from the third expected value. In this case, the determination unit 411 determines that there is a short circuit.

[0150] In the case of No. 8, at a timing t between the second timing t2 and the third timing t3, at least one of the following occurs: the data terminal 210 and the power terminal 230 are short-circuited, or the data terminal 210 and the reset terminal 240 are short-circuited. In this case, the circuit board 120 outputs a low-level voltage from the data terminal 210 to the printing device 20 at the first timing t1, a high-level voltage at the second timing t2, the same as the second expected value, and a high-level voltage at the third timing t3 that is different from the third expected value. In this case, the determination unit 411 determines that there is a short circuit.

[0151] In the case of No. 9, the short circuit between the data terminal 210 and the power terminal 230 is resolved at a timing t between the first timing t1 and the second timing t2, and the short circuit between the data terminal 210 and the reset terminal 240 is resolved. In this case, the circuit board 120 outputs a high-level voltage from the data terminal 210 to the printing device 20 at the first timing t1 that is different from the first expected value, at the second timing t2 that is the same high-level voltage as the second expected value, and at the third timing t3 that is the same low-level voltage as the third expected value. In this case, the determination unit 411 determines that there is a short circuit.

[0152] In case No. 10, the short circuit between the data terminal 210 and the power terminal 230 is resolved at a timing t between the second timing t2 and the third timing t3, and the short circuit between the data terminal 210 and the reset terminal 240 is resolved. In this case, the circuit board 120 outputs a high-level voltage from the data terminal 210 to the printing device 20 at the first timing t1 that is different from the first expected value, at the second timing t2 that is the same high-level voltage as the second expected value, and at the third timing t3 that is the same low-level voltage as the third expected value. In this case, the determination unit 411 determines that there is a short circuit.

[0153] A3-4. Other software configurations: In the first embodiment described above, if device 130 receives a request signal RS and the printing device 20 receives a second print instruction while printing based on a first print instruction, device 130 may output a first response signal FS and a second response signal SS to the data terminal 210 after printing based on the first print instruction is completed and before printing based on the second print instruction is started. If device 130 receives a request signal RS and the printing device receives a cleaning instruction for the print head 5, device 130 may output a first response signal FS and a second response signal SS to the data terminal 210 before performing cleaning. If device 130 receives a request signal RS and the carriage 30 is in a replacement position where it can replace the liquid container 100, device 130 may output a first response signal FS and a second response signal SS to the data terminal 210, and further output a first response signal FS and a second response signal SS to the data terminal 210 when the carriage 30 moves from the replacement position to a standby position where it cannot replace the liquid container 100. The replacement position is, for example, the position of the carriage 30 when it is in the home position.

[0154] The first response signal FS can also be called the first signal. The second response signal SS can also be called the second signal. The low first response voltage can also be called the first low voltage. The high first response voltage can also be called the first high voltage. The low second response voltage can also be called the second low voltage. The high second response voltage can also be called the second high voltage. The low clock voltage can also be called the low voltage. The high clock voltage can also be called the high voltage. The low reset voltage can also be called the low voltage. The high reset voltage can also be called the high voltage.

[0155] A4. Other embodiments of the first embodiment: A4-1. Other Embodiments Regarding the Substrate 1: Figure 21A is a diagram illustrating a substrate as another embodiment 1. Figure 21A shows examples of combinations of arrangements of multiple contact parts cp. The arrangement of the data contact part cpd, clock contact part cpc, power supply contact part cpvd, reset contact part cpr, and ground contact part cpvs is not limited to the first embodiment described above, and other arrangements are possible as shown in combinations No. 1 to No. 24 in Figure 21. In combinations No. 1 to No. 24, the clock contact part cpc, data contact part cpd, power supply contact part cpvd, and reset contact part cpr are arranged in the first region Rg1, and the ground contact part cpvs is arranged in the second region Rg2.

[0156] In the above combinations of contact portion cp arrangements, for No. 1 to No. 18, at least one contact portion cp from among the clock contact portion cpc, power supply contact portion cpvd, and reset contact portion cpr is projected between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs. In the above combinations of contact portion cp arrangements, for No. 1 to No. 12, at least two contact portions cp from among the clock contact portion cpc, power supply contact portion cpvd, and reset contact portion cpr are projected between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs. In the above combinations of contact portion cp arrangements, for No. 1 to No. 6 and No. 13 to No. 18, the data contact portion cpd is projected between the projection positions of any two contact portions cp from among the power supply contact portion cpvd, reset contact portion cpr, and clock contact portion cpc. In the above combinations of contact portion cp arrangements, in No. 1, 3, 8, 11, 14, 15, 20, and 23, the data contact portion cpd and / or the reset contact portion cpr are positioned so that they are projected between the power supply contact portion cpvd and the clock contact portion cpc, and the reset contact portion cpr is positioned such that its projected position swr is adjacent to the projected position swvd of the power supply contact portion cpvd. In the above combinations of contact portion cp arrangements, in No. 1, 2, 6~8, 13, 14, 16, 23, and 24, the power supply contact portion cpvd is positioned such that its projected position swvd is adjacent to the projected position swd of the data contact portion cpd. In the above combination of contact area cp arrangements, in No. 1, the clock contact area cpr is positioned to be projected to the position furthest from the projection position swvs of the ground contact area cpvs, and the data contact area cpd, power contact area cpvd, and reset contact area cpr are positioned to be projected sequentially from the projection position swc of the clock contact area cpc on the second virtual line C2 toward the projection position swvs of the ground contact area cpvs.

[0157] Figure 21B shows the arrangement examples shown in No. 2 and No. 3 of Figure 21A. Board 120b is the arrangement example shown in No. 2 of Figure 21, and the difference from board 120 shown in Figure 5 is that the positional relationship between the clock contact cpc and the reset contact cpr is swapped. Board 120c is the arrangement example shown in No. 3 of Figure 21, and the difference from board 120 shown in Figure 5 is that the positional relationship between the power contact cpvd and the reset contact cpr is swapped.

[0158] The combinations of contact point cp arrangements shown in Figure 21A can also be applied to the combinations of data terminal 210, clock terminal 220, power terminal 230, reset terminal 240, and ground terminal 250. The combinations of contact point cp arrangements shown in Figure 21A can also be applied to the combinations of device-side terminal 490.

[0159] In the first embodiment described above and in Figures 21A and 21B, the ground contact portion cpvs is located in the second region Rg2, but contact portions other than the ground contact portion cpvs may also be located in the second region Rg2. For example, the data contact portion cpc, the power supply contact portion cpvd, the reset contact portion cpr, and the ground contact portion cpvs may be located in the first region Rg1, and the clock contact portion cpc may be located in the second region Rg2. For example, the data contact portion cpc, the clock contact portion cpc, the power supply contact portion cpvd, and the ground contact portion cpvs may be located in the first region Rg1, and the reset contact portion cpr may be located in the second region Rg2. For example, the data contact portion cpc, the clock contact portion cpc, the reset contact portion cpr, and the ground contact portion cpvs may be located in the first region Rg1, and the power supply contact portion cpvd may be located in the second region Rg2. For example, the clock contact portion cpc, power supply contact portion cpvd, reset contact portion cpr, and ground contact portion cpvs may be arranged in the first region Rg1, and the data contact portion cpd may be arranged in the second region Rg2. In these configurations as well, the arrangement relationship between the contact portion cp arranged in the first region Rg1 and the contact portion cp arranged in the second region Rg2 is the same as in the first embodiment described above.

[0160] A4-2. Other Embodiments Regarding the Substrate 2: Figure 22 shows two patterns of substrates 120d and 120e as another embodiment 2. The arrangement of the ground contact portion 250 is not limited to the first embodiment and may be in other arrangements. In substrate 120d, the arrangement of the ground contact portion cpvs differs from that of substrate 120 shown in Figure 5. The ground contact portion cpvs of substrate 120d are arranged to form a second row R2. When substrate 120d is used, the connection mechanism 400 shown in Figures 7A and 7B is provided with device-side terminals corresponding to the ground contact portion cpvs of substrate 120. The number of ground contact portion cpvs is not limited to the first embodiment and may be two or more. In substrate 120e, the number of ground contact portion cpvs differs from that of substrate 120 shown in Figure 5. Substrate 120e is provided with two ground terminals 250a and 250b, each containing a ground contact portion cpvs. When board 120e is used, the connection mechanism 400 shown in Figures 7A and 7B has two device-side terminals corresponding to the two grounding terminals 250a and 250b. The arrangement of the data contact portion cpd, clock contact portion cpc, power contact portion cpd, and reset contact portion cpr on board 120e is the same as that of board 120 shown in Figure 5. The grounding contact portions cpvs of grounding terminal 250a and grounding contact portions cpvs of grounding terminal 250b are arranged at different positions in the direction along the first virtual line C1. The grounding contact portion cpvs of one grounding terminal 250a is arranged to form a second column R2. The grounding contact portion cpvs of the other grounding terminal 250b is arranged to form a first column R1.

[0161] A4-3. Other embodiments relating to the substrate 3: Figure 23 shows two patterns of substrates 120f and 120g as another embodiment 3. The size of the grounding terminal 250 is not limited to the first embodiment described above and may be of other sizes. The grounding terminal 250c of substrate 120f and the grounding terminal 250d of substrate 120g are larger than the grounding terminal 250 shown in Figure 5. The grounding terminal 250c is formed across the first row R1 and the second row R2. The grounding terminal 250c is positioned across the central part CMP of substrate 120f in the direction along the first virtual line C1. The grounding terminal 250d of substrate 120g is further formed across the first region Rg1 and the second region Rg2. The grounding terminal 250d is positioned across the first virtual line C1.

[0162] A4-4. Other embodiments relating to the substrate 4: Figure 24 shows two patterns of substrates 120ab and 120ac as another embodiment 4. Figure 25 shows two patterns of substrates 120ad and 120ae as another embodiment 4. The shape of terminals 210 to 250 is not limited to the first embodiment described above, and may be other shapes. As shown in Figure 24, terminals 210 to 250 of substrate 120ab are formed to span the first row R1 and the second row R2 and have an elongated shape along the first virtual line C1. Terminals 210 to 250 of substrate 120ac have a rectangular portion like terminals 210 to 250 of substrate 120, as well as an elongated portion along the first virtual line C1. The data terminal 210 of substrate 120ad has a portion that is bent in the direction along the first virtual line C1 and the second virtual line C2. The data terminal 210 of the substrate 120ae has a portion that is bent in the direction along the first virtual line C1 and the second virtual line C2 so as to surround a part of the power terminal 230. Even in this case, the positional relationship of the contact portions cp of terminals 210 to 250 is the same as the positional relationship of the contact portions cp shown in Figure 5 of the first embodiment described above.

[0163] A4-5. Other embodiments relating to the substrate 5: Figure 26 illustrates a substrate 120Td as another embodiment 5. The upper part of Figure 26 shows the substrate 120Td. The lower part of Figure 26 schematically shows a connection mechanism 400Td corresponding to the substrate 120Td. In the substrate 120 in the first embodiment described above, the multiple contacts cp were arranged to form two rows, but are not limited to this. In the substrate 120Td, the contacts are arranged to form three rows. The data contact cpd and the ground contact cpvs form the third row R3. Thus, even if the arrangement of the contacts cp differs from that in the first embodiment in the direction along the first virtual line C1, the projection position onto the second virtual line C2 remains unchanged. When the substrate 120Td is mounted in the direction along the direction of gravity, in the substrate 120Td, the clock contact cpc, power contact cpvd, and reset contact cpr are located on the +Z direction side, which is on the gravity side, than the data contact cpd. Furthermore, at least one of the clock contact portion cpc, power supply contact portion cpvd, and reset contact portion cpr is positioned such that, when the contact portion cp is projected onto the second virtual line C2, it is projected between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs. Contact portions cp other than the data contact portion cpr and ground contact portion cpvs may also be positioned in a different location from the contact portion cp in the first embodiment in the direction along the first virtual line C1, similar to the data contact portion cpr and ground contact portion cpvs in this embodiment. The positional relationship of each contact portion cp described above also applies to each contact portion cp of the device-side terminal 490. When the substrate 120Td is mounted in a direction along the direction of gravity, the device-side clock contact portion dcpc, device-side power supply contact portion dcpvd, and device-side reset contact portion dcpr are positioned on the +Z direction side, which is closer to the direction of gravity than the device-side data contact portion dcpd. Furthermore, at least one of the device-side clock contact dcpc, device-side power contact dcpvd, and device-side reset contact dcpr is positioned such that when contact dcp is projected onto the second virtual line C2, it is projected between the projection position swd of the device-side data contact dcpd and the projection position swvs of the device-side ground contact dcpvs.

[0164] A4-6. Other embodiments relating to the substrate 6: Figure 27 shows two patterns of substrates 120U and 120V as another embodiment 6 of the substrate. The form of the base material 120bd of substrate 120 is not limited to the first embodiment described above. Substrate 120U is used in common for four liquid containers 100A to 100D. In this case, the four liquid containers 100A to 100D may be formed integrally. Substrate 120U comprises a first substrate region 120UA, a second substrate region 120UB, a third substrate region 120UC, and a fourth substrate region 120UD. The first substrate region 120UA is used for liquid container 100A and is the region where the terminals 290 are located. The second substrate region 120UB is used for liquid container 100B and is the region where the terminals 290 are located. The third substrate region 120UC is used for liquid container 100C and is the region where the terminals 290 are located. The fourth substrate region 120UD is the region where terminals 290 used for the liquid container 100D are located. The first substrate region 120UA to the fourth substrate region 120UD may each be considered as independent substrates. On the back surface 120fb of substrate 120U, four devices 130A to 130D used for the four liquid containers 100A to 100D are provided. The terminals 290 of each substrate region 120UA to 120UD are connected to the corresponding devices 130A to 130D via wiring pattern layers (not shown) and through-holes located on substrate 120U. Here, each device 130A to 130D is supplied with a power supply voltage VDD via a common power supply terminal 230. In this embodiment, the common power supply terminal 230 is provided on the terminal 290 of the first substrate region 120UA. Therefore, on substrate 120U, the power supply terminal 230 is not provided on the terminals 290 of the second substrate regions 120UB to 120UD. As described above, some of the terminals 290 may be used in common for multiple devices 130A to 130D.

[0165] In the first embodiment described above, the substrate 120bd of the substrate 120 was composed of a single material, but it is not limited to this and may be composed of multiple substrates. In the substrate 120V, the device 130 and the terminal 290 are not on a single substrate, but are arranged on separate substrates 124a and 124b. The substrate 120V has a first substrate 124a and a second substrate 124b. The first substrate 124a and the second substrate 124b are electrically connected by a conductive wire EL or the like. The first substrate 124a and the second substrate 124b are made of different materials. The first substrate 124a is, for example, a rigid substrate, and the second substrate 124b is a sheet-like substrate. The device 130 is molded by resin 139 on the front surface 120faa of the first substrate 124a. The terminal 290 is arranged on the front surface 120fab of the second substrate 124b.

[0166] A4-7. Other embodiments relating to the substrate 7: Figure 28 shows a circuit board 120X of another embodiment 7 relating to the circuit board. In the first embodiment described above, as shown in Figure 5, there were five types of terminals 290: a data terminal 210, a clock terminal 220, a power terminal 230, a reset terminal 240, and a ground terminal 250. However, the number of terminals is not limited to these, and there may be fewer than five types. For example, the circuit board 120X has a data terminal 210, a clock terminal 220, a power terminal 230, and a ground terminal 250. The circuit board 120X does not have a reset terminal 240. In this case, the reset signal RST is generated, for example, in the processing unit 136 of the device 130 using the clock signal SCK. For example, the circuit board 120X does not need to have a power terminal 230. In this case, the power supply voltage VDD is generated, for example, in the processing unit 136 of the device 130 using the clock signal SCK. For example, the circuit board 120X may have a power terminal 230 but not a reset terminal 240. Thus, the terminal 290 of the first embodiment described above does not necessarily have to include at least one of the reset terminal 240 and the power terminal 230. In this embodiment, among the terminals 290 of the circuit board 120, terminals 290 other than the ground terminal 250 are referred to as the "other terminal group". In this embodiment, the ground terminal 250 can also be called the first terminal. The data terminal 210 can also be called the second terminal. The clock terminal 220 can also be called the third terminal. The ground contact portion 250 can also be called the first contact portion. The data contact portion 210 can also be called the second contact portion. The clock contact portion 220 can also be called the third contact portion.

[0167] A4-8. Other embodiments relating to the substrate 8: In embodiments of this disclosure, the arrangement of terminals 290 and contact portions cp may be swapped across the first virtual line C1. The arrangement may also be swapped between the terminals constituting the first row and the terminals constituting the second row.

[0168] A4-9. Other Embodiments of Liquid Container 1: The liquid container of this disclosure is not limited to the liquid container 100 shown in Figure 3, but may have other configurations. Other embodiments of the liquid container 100 are described below. Similar components in the liquid container 100 of the first embodiment shown in Figures 3 and 4, and in other embodiments of the liquid container, are denoted by the same reference numerals, and their descriptions are omitted as appropriate. Note that the configuration of the printing device 20, such as the storage section 4 shown in Figure 4, is modified to correspond to the configuration of the liquid container.

[0169] Figure 29 is a perspective view showing a liquid container 100p as another embodiment 1 of the liquid container. The liquid container 100p comprises a liquid container 101, a liquid supply unit 104 having a liquid supply port 104op, and a substrate 120. The liquid container 101 forms an ink chamber 150 for containing ink inside. The liquid supply unit 104 is formed in the bottom wall 101wb and communicates with the ink chamber 150. The substrate 120 is provided at the corner portion 89 where the third wall 101wb and the second wall 101wr of the liquid container 101 intersect. The liquid container 100p is mounted in the storage unit 4 by engaging the protruding second container engaging portion 320 of the first wall 101wf with a recess in the storage unit 4, and then rotating the liquid container 100 in the rotational mounting direction RD with the second container engaging portion 320 as a fulcrum. When the mounting is complete, the protruding first container engaging portion 310 of the second wall 101wr engages with the lever of the housing portion 4. In this embodiment, the mounting direction MD includes components in the +Z direction and the -Y direction, and the first direction FD includes components in the +Z direction and the +Y direction, which are components of the mounting direction MD.

[0170] A4-10. Other Embodiments of Liquid Containing Vessels 2: Figure 30 is a perspective view showing a liquid container 100q as another embodiment 2 of the liquid container. Figure 31 is an enlarged view of the area around the substrate 120 of the liquid container 100q. As shown in Figure 30, the liquid container 100q comprises a liquid container 101, a liquid supply unit 104 having a liquid supply port 104op, and a substrate 120. Inside the liquid container 101 is a liquid container bag (not shown) for containing ink. The liquid container bag is flexible and functions as an ink chamber 150. The liquid supply unit 104 is provided in the liquid container bag and is located in an opening 424 formed in the front wall 101wf of the liquid container 101. The substrate 120 is provided at the corner portion 89a where the second wall 101wr and the fourth wall 101wu of the liquid container 101 intersect. The corner portion 89a is a recessed area inward of the liquid container 101. In this embodiment, the mounting direction MD is the -Y direction, and the first direction FD includes a component in the -Y direction, which is the mounting direction MD, and a component in the +Z direction.

[0171] A4-11. Other embodiments of liquid containers 3: Figure 32 is a perspective view showing a liquid container 100r as another embodiment 3 of the liquid container. The liquid container 100r has the -Y direction as the mounting direction MD. The liquid container 100r comprises a liquid container 101, a liquid supply unit 104 having a liquid supply port 104op, and a substrate 120. A liquid container bag (not shown) for containing ink is arranged inside the liquid container 101. This liquid container bag is flexible and functions as an ink chamber 150. The liquid supply unit 104 is provided in the liquid container bag and is located in an opening 424 formed in the second wall 101wr of the liquid container 101. The substrate 120 is provided at the corner portion 89a where the second wall 101wr and the fourth wall 101wu of the liquid container 101 intersect. The corner portion 89a is a recessed area inward of the liquid container 101. A groove-shaped container-side engagement structure 425 is formed on the third wall 101wb of the liquid container 101. When the liquid container 100r is fully installed, the container-side engagement structure 425 engages with the protruding device-side engagement structure of the storage section 4, thereby restricting the movement of the liquid container 100 in the +Y direction, which is the removal direction. In this embodiment, the installation direction MD is the -Y direction, and the first direction FD includes components in the -Y direction (installation direction MD) and the -Z direction.

[0172] A4-12. Other embodiments of liquid containers 4: Figure 33 is a perspective view showing a liquid container 100s as another embodiment 4 of the liquid container. The liquid container 100s is detachably housed in a case 61 that is retractably provided on the printing device 20, and is then mounted on the printing device 20 together with the case 61. The liquid container 100s includes a liquid container bag 111 and a connecting member 112 attached to one end of the liquid container bag 111 on the -Y side. In this embodiment, the liquid container bag 111 and the connecting member 112 function as a liquid container. The liquid container bag 111 is flexible. A liquid supply section 104 having a liquid supply port 104op is provided on the -Y side of the liquid container bag 111, which functions as an ink chamber 150. The liquid supply section 104 is located in an opening 424 formed in the second wall 101wr of the connecting member 112. The substrate 120 is located in a corner portion 89a, which is a recess formed in the second wall 101wr of the connecting member 112. In this embodiment, the mounting direction MD is the -Y direction, and the first direction FD includes components in the -Y direction and the -Z direction, which are the mounting direction MD.

[0173] A4-13. Other embodiments of liquid containers 5: Figure 34 is a perspective view showing a liquid container 100w as another embodiment 5 of the liquid container. In the liquid container 100w, the substrate 120 is positioned on the fourth wall 101wu, which is a horizontal surface when the mounting is complete. The fourth wall 101wu constitutes the top wall when the mounting is complete. The liquid container 100w, like the liquid container 100 shown in Figures 3 and 4, comprises a liquid container 101 and a liquid supply unit 104 having a liquid supply port 104op. Inside the liquid container 101 is a flexible liquid container bag (not shown) for containing ink. This liquid container bag functions as an ink chamber 150. The liquid supply unit 104 is provided in the liquid container bag and is positioned in an opening 424 formed in the second wall 101wr of the liquid container 101. In this embodiment, the mounting direction MD is the -Y direction, and the first direction FD is the direction along the mounting direction MD, the -Y direction.

[0174] A4-14. Other embodiments of liquid containers 6: Figure 35 is a perspective view showing a liquid container 100x as another embodiment 6 of the liquid container. In the liquid container 100x, the substrate 120 is positioned on the fifth wall 101wsa, which is a vertical surface when the mounting is complete. The fifth wall 101wsa constitutes a side wall when the mounting is complete. The liquid container 100x, like the liquid container 100 shown in Figures 3 and 4, comprises a liquid container 101 and a liquid supply unit 104 having a liquid supply port 104op. Inside the liquid container 101 is a flexible liquid container bag (not shown) for containing ink. This liquid container bag functions as an ink chamber 150. The liquid supply unit 104 is provided in the liquid container bag and is positioned in an opening 424 formed in the second wall 101wr of the liquid container 101. In this embodiment, the mounting direction MD is the -Y direction, and the first direction FD is the direction along the mounting direction MD, the -Y direction.

[0175] A4-15. Other embodiments of liquid containers 7: Figure 36 shows a liquid container 100y as another embodiment 7 of the liquid container. In the liquid container 100 of the first embodiment described above, the liquid container 101 and the substrate 120 were integrally constructed as shown in Figures 3 and 4, but are not limited thereto. For example, the liquid container 100y has a liquid container 101ya that forms an ink chamber 150 and an adapter 101yb to which the substrate 120 is attached. The liquid supply unit 104 is formed in the liquid container 101ya. The liquid container 101ya is removably housed in the concave adapter 101yb. The adapter 101yb functions as a case for housing the liquid container 101ya. An opening 134 is formed in the third wall 101wb of the adapter 101yb through which the liquid supply unit 104 is inserted. The liquid container 101ya may be fixed to the adapter 101yb using a fixing member (not shown). The liquid container 101ya does not need to be fixed to the adapter 101yb.

[0176] A4-16. Other embodiments of liquid containers 8: Figure 37 shows liquid containers 100g and 100h as another embodiment 8 of the liquid container. In the liquid container 100 of the first embodiment described above, as shown in Figures 4 to 6, the plurality of terminals 290 and the device 130 were arranged on the base material 120bd, but it is not limited to this. In the liquid container 100g, the plurality of terminals 290 and the device 130 are arranged directly on the second wall 101wr of the liquid container 101 without going through the base material 120bd. The plurality of terminals 290 and the device 130 are electrically connected by a wiring pattern (not shown) or the like. Thus, the liquid container 101, the plurality of terminals 290 and the device 130 may be configured as an integral part of the liquid container 100g.

[0177] In the liquid container 100h, the multiple terminals 290 are directly positioned on the second wall 101wr of the liquid container 101 without going through the base material 120bd. The device 130 is positioned on the mounting base material 120h and is positioned on the second wall 101wr of the liquid container 101 via the mounting base material 120h. The multiple terminals 290 and the device 130 are electrically connected by a wiring pattern (not shown). In this way, the liquid container 101 and the multiple terminals 290 are configured as a single unit as the liquid container 100h, while the device 130 may be configured as a separate unit.

[0178] A4-17. Other embodiments of liquid containers 9: Figure 38 is a perspective view showing a liquid container 100z as another embodiment 9 of the liquid container. Figure 39 is an enlarged view of the area around the substrate 120 of the liquid container 100z. The XYZ axes shown in each figure of the other embodiment 9 are based on the state when the liquid container 100z has been inserted into the storage section of the printing device, which will be described later. When the liquid container 100z is mounted on the printing device, two mounting operations are performed. In this embodiment, the first direction FD has a Y-direction component and a Z-direction component, and the second direction SD is the X-direction. As shown in Figure 38, the liquid container 100z comprises a liquid container 101z, a liquid supply section 104 having a liquid supply port 104op, and a substrate 120. The liquid container 101z has a storage body 101za capable of containing liquid and a cover member 101zb attached to the storage body 101za. The liquid supply unit 104 is located in an opening 424 formed in the third wall 101wb of the liquid container 101z, which is formed by the cover member 101zb. The substrate 120 is provided at the corner portion 89z where the second wall 101wr and the third wall 101wb of the liquid container 101z intersect. The corner portion 89z is a recessed area inward of the liquid container 101z.

[0179] As shown in Figure 39, the board 120 is oriented differently from that in Figure 5, with the data terminal 210 and reset terminal 240 located on the -Z side compared to the clock terminal 220, power terminal 230, and ground terminal 250.

[0180] Figure 40 is the first diagram illustrating the process of mounting the liquid container 100z into the housing section 4z of the printing device. Figure 41 is the second diagram illustrating the process of mounting the liquid container 100z into the housing section 4z of the printing device. Figure 42 is a diagram showing the completed state of mounting the liquid container 100z. The housing section 4z is located in a different location from the print head (not shown). The housing section 4z and the print head are connected by a liquid flow pipe (not shown). The liquid in the liquid container 4z mounted in the housing section 4z is supplied to the print head through the liquid flow pipe.

[0181] As shown in Figure 40, the liquid container 100z is inserted into the mounting chamber 65 of the storage section 4z through the attachment / detachment opening 474 of the storage section 4z by moving the liquid container 100z in the first mounting direction MD1, which is horizontal. The first mounting direction MD1 is the +Y direction.

[0182] As shown in Figure 41, the liquid container 100z is pushed forward in the first mounting direction MD1, and contact is completed between the device-side terminal 490 of the connection mechanism 400 of the storage section 4z and the terminal 290 of the substrate 120. By pushing down the second wall 101wr side of the liquid container 100z shown in Figure 41, the liquid container 100z rotates in the second mounting direction MD2, which has a component in the direction of gravity, around the pivot point Rp provided in the storage section 4z. The second mounting direction MD2 has components in the +Z direction and the +Y direction.

[0183] As shown in Figure 42, when the rotational movement of the liquid container 100z in the second mounting direction MD2 is completed, the liquid supply section 104 of the liquid container 100z and the liquid introduction section 6 of the container 4z are connected. In this embodiment, either the first mounting direction MD1 or the second mounting direction MD2 is the mounting direction MD.

[0184] A4-18. Other embodiments of liquid containers 10: In the first embodiment and other embodiments described above, the liquid container 100 was an ink cartridge, but it is not limited thereto. The liquid container 100 may be, for example, a waste liquid container. The waste liquid container is, for example, a container that holds waste liquid discharged from the nozzles of the print head 5 when the printing device 20 performs cleaning of the print head 5.

[0185] A4-19. Other Embodiments of the Printing System 1: The printing system of this disclosure is not limited to the printing system 1000 shown in Figure 1. Figure 43 shows a printing system 1000A as another embodiment 1 of the printing system. In the first embodiment described above, the liquid container 100 is mounted on the carriage 30 in a configuration called on-carriage, as shown in Figure 1, but the system is not limited to this. The liquid container 100 may be mounted in a location other than the carriage 30 in a configuration called off-carriage. The printing system 1000A is an off-carriage type printing system and comprises a printing device 20A and a liquid container 100T. The printing device 20A has a carriage 30 equipped with a print head 5. The liquid container 100T is detachably mounted on a container mounting section 600 located at a location different from the carriage 30. The liquid container 100T also comprises a liquid container, a liquid container section having an ink supply port, and a substrate, similar to the liquid container 100 of the first embodiment. For example, liquid containers 100q to 100x, as shown in Figures 30 to 35, are attached to the printing device 20A. The printing device 20A performs connection status determination processing, similar to the printing device 20.

[0186] A4-20. Other Embodiments of the Printing System 2: Figure 44 shows a printing system 1000C as another embodiment 2 of the printing system. In the first embodiment described above, as shown in Figure 1, a housing section 4 for detachably mounting a liquid container 100 was located inside the main body of the printing device 20, but the location of the housing section 4 is not limited to this. In the printing system 1000C shown in Figure 45, the housing section 4C of the printing device 20C is located outside the main body 201 of the printing device 20C. As shown in Figures 7A and 7C, the housing section 4C includes a liquid introduction section 6, a connection mechanism 400, and a sub-control board 500. The liquid introduction section 6 and the print head 5 located inside the main body 201 are connected by a flexible liquid flow tube 105. Multiple liquid flow tubes 105 are provided according to the number of liquid introduction sections 6. Multiple liquid flow tubes 105 are housed in a single protective tube 106. Furthermore, the printing device 20C has a bus 107 that connects the sub-control board 500 and a main control unit 40 (not shown) located inside the main body 201, and transmits and receives various signals. The liquid container 100 shown in Figure 45 also comprises a liquid container, a liquid supply unit having a liquid supply port, and a circuit board, similar to the liquid container 100 of the first embodiment described above. The printing device 20C performs connection status determination processing, similar to the printing device 20.

[0187] A4-21. Other Embodiments of the Printing System 3: Figure 45 shows a printing system 1000D as another embodiment 3 of the printing system. The printing system 1000D comprises four liquid containers 100A, 100B, 100C, and 100D, similar to the first embodiment, and a printing device 20 as shown in Figure 1. The liquid containers 100A to 100D may be formed integrally or each may be formed individually. Liquid is supplied to the liquid containers 100A to 100D via an external liquid reservoir 814 and liquid flow pipe 812 located outside the printing system 100D. In Figure 45, the elements of the liquid reservoir 814 and liquid flow pipe 812 corresponding to each liquid container 100A to 100D are denoted with "A" to "D".

[0188] A4-22. Other Embodiments of the Printing System 4: Figure 46 shows a printing system 1000E as another embodiment 4 of the printing system. The printing system 1000E comprises an adapter 101E having a substrate 120, a liquid container 824 capable of containing liquid, a liquid flow pipe 822, and a printing device 20 as shown in Figure 1. The adapter 101E can be detachably attached to the container 4. The liquid flow pipe 822 connects the liquid container 824 and the liquid introduction section 6 and functions as a liquid supply section. The portion of the liquid flow pipe 822 connected to the liquid introduction section 6 functions as a liquid supply port. There are four adapters 101E, four liquid flow pipes 822, and four liquid containers 824. In the printing system 1000E, "completed mounting state" means that the adapter 101E having the substrate 120 is mounted on the printing device 120 and no short circuit has occurred between the terminals 290. In this embodiment, "the substrate 120 is mounted on the printing device 20" means that the substrate 120 is physically attached to the printing device 20 and the contact portion cp of the terminal 290 is electrically connected to the device-side terminal 490. The data terminal 210 of the substrate 120 is used to detect whether or not the substrate 120 is mounted on the printing device 20. The mounting determination unit 412 of the printing device 20 determines whether or not the substrate 120 is mounted. The first response signal RT1 and the second response signal RT2 are signals used by the printing device 20 to determine whether or not the substrate 120 is mounted on the printing device 20.

[0189] A4-23. Other embodiments relating to electrical and software configurations: In the first embodiment described above, as shown in Figure 1, four liquid containers 100A to 100D were detachably mounted in the storage section 4, but the number of liquid containers 100 that can be detachably mounted in the storage section 4 is not limited to this. Below, using Figures 47A and 47B, a timing chart for determining the connection state in a printing system 1000 in which six liquid containers 100 are detachably mounted in the storage section 4 will be described. The six liquid containers 100 may contain, for example, inks of different colors. Figures 47A and 47B are schematic timing charts showing the signals input and output to the terminals 290 of the liquid containers 100 when the mounting is complete. Figure 47A is a first timing chart in a printing system 1000 equipped with six liquid containers 100A to 100F. Figure 47B is a second timing chart in a printing system 1000 equipped with six liquid containers 100A to 100F. Figure 47A corresponds to Figure 11A, and Figure 47B corresponds to Figure 11B. VDD, RST, SCK, SDA1~SDA6 shown in Figures 44A and 44B represent signals transmitted or supplied via the corresponding terminals 290 by the corresponding lines LVDD, LRST, LSCK, and LSDA1~LSDA6.

[0190] The difference between the request signal RS shown in Figure 47A and the request signal RS shown in Figure 11A is that the bits in cycles D4 and D3 of the command period CMT shown in Figure 47A are allocated to specify the fifth liquid container 100E and the sixth liquid container 100F. For the request signal RS transmitted via the data line LSDA5 connected to the device 130E of liquid container 100E, the second bit of the first identification data DB1 is high, and the remaining bits are low. For the request signal RS transmitted via the data line LSDA6 connected to the device 130F of liquid container 100F, the first bit of the first identification data DB1 is high, and the remaining bits are low.

[0191] The difference between the timing chart shown in Figure 47B and the timing chart shown in Figure 11B is that the waveforms of the first response signal FS and the second response signal SS corresponding to the liquid containers 100E and 100F have been added. Device 130E of liquid container 100E outputs the first response signal FS to the data terminal 210 in cycle D4 of the first response period RT1, and outputs the second response signal SS to the data terminal 210 in cycle D4 of the second response period RT2. Device 130F of liquid container 100F outputs the first response signal FS to the data terminal 210 in cycle D3 of the first response period RT1, and outputs the second response signal SS to the data terminal 210 in cycle D3 of the second response period RT2.

[0192] Figure 48 schematically shows the electrical configuration of a printing system 1000 equipped with six liquid containers 100A to 100F. In Figure 48, components similar to those in Figure 8 are denoted by the same reference numerals, and explanations are omitted as appropriate. The difference between the electrical configuration in Figure 48 and that in Figure 8 is that in Figure 8, the lines LSDA, LRST, LSCK, and LVDD, excluding the grounding line LVSS, were independently provided corresponding to the four liquid containers 100A to 100D, whereas in Figure 48, the lines LRST, LSCK, and LVDD, excluding the data line LSDA, are used in common for multiple devices 130. In Figure 48, the grounding line LVSS is also used in common for devices 130A to 130F of the six liquid containers 100A to 100F.

[0193] As shown in Figure 48, the power line LVDD2, electrically connected to the host terminal HVDD2 of the sub-control unit 50, is electrically connected to two devices 130B and 130E when the installation is complete. The reset line LRST2, electrically connected to the host terminal HRST2 of the sub-control unit 50, is electrically connected to two devices 130B and 130C when the installation is complete. The clock line LSCK2, electrically connected to the host terminal HSCK2 of the sub-control unit 50, is electrically connected to two devices 130B and 130D when the installation is complete. The power line LVDD4, electrically connected to the host terminal HVDD4 of the sub-control unit 50, is electrically connected to two devices 130C and 130D when the installation is complete. The reset line LRST4, electrically connected to the host terminal HRST4 of the sub-control unit 50, is electrically connected to two devices 130D and 130E when the installation is complete. The clock line LSCK4, electrically connected to the host terminal HSCK4 of the sub-control unit 50, is electrically connected to two devices 130C and 130E when the installation is complete. The lines LSDA1, LVDD1, LRST1, LSCK1, electrically connected to device 130A, and the lines LSDA6, LVDD6, LRST6, LSCK6, electrically connected to device 130F are used independently without being used in conjunction with other devices 130.

[0194] Regarding the electrical configuration of the printing system 1000 shown in Figure 48, some of the configuration may be applied to the printing system 1000 shown in Figure 1, which has four liquid containers 100A to 100D. For example, the liquid containers 100B to 100E shown in Figure 48 may be replaced with the liquid containers 100A to 100D of the printing system 1000 shown in Figure 1. For example, the liquid containers 100A, 100B, 100E, and 100F shown in Figure 48 may be replaced with the liquid containers 100A to 100D of the printing system 1000 shown in Figure 1.

[0195] A4-24. Other Embodiments of the Device 1: In the first embodiment described above, as shown in Figure 6, device 130 comprises a processing unit 136 and a storage unit 138, but is not limited to this. Figure 49 shows devices 130a and 130b as other embodiments 1 of device 130. Device 130a comprises a processing unit 136 but does not have a storage unit 138. The storage unit 138 and device 130 may be separate entities. In this case, the storage unit 138 is electrically connected to the processing unit 136 of device 130b. Device 130b comprises a first processing unit 136a, a second processing unit 136b, and a storage unit 138. The first processing unit 136a is connected to the storage unit 138. The second processing unit 136b is connected to the first processing unit 136 and terminals 210 to 250. In this configuration, the first processing unit 136a and the second processing unit 136b function as a processing unit together. Thus, device 130b may have multiple processing units 136a, 136b.

[0196] A4-25. Other Embodiments of the Device 2: In the first embodiment described above, as shown in Figure 11C, the first response signal FS was output for the entire period during which the clock signal SCK was at a high level, but this is not limited to this. For example, device 130 may output the first response signal FS to the data terminal 210 for a portion of the period during which the clock signal SCK is at a high level. For example, after outputting the first response signal FS during the period during which the clock signal SCK is at a high level, device 130 may set the drive state of the data terminal 210 to high impedance. For example, in one cycle of the clock signal SCK, device 130 may output the first response signal FS, which includes a low level, during the period when the clock signal SCK is at a low level and the period when the clock signal is at a high level.

[0197] A4-26. Other Embodiments of the Device 3: In the first embodiment described above, the frequency of the clock signal SCK was constant in the connection state determination process, as shown in Figures 11A and 11B, but it does not have to be constant. For example, the frequency of the clock signal SCK in the second response period RT2 may be set lower than the frequency of the clock signal SCK in the first response period RT1. The second response signal SS contains different voltages. In the second response period RT2, the frequency of the clock signal SCK may be set lower than in the first response period RT1, and the second response signal SS may be output for a longer period than the first response signal FS.

[0198] A4-27. Other embodiments of the device 4: In the first embodiment described above, the processing unit 136 of the device 130 may repeatedly output the first response signal FS and the second response signal SS by repeatedly providing the first response period RT1 and the second response period RT2 in that order while the reset signal RST is high level. After outputting a low-level voltage of the second response signal SS to the data terminal 210, the processing unit 136 of the device 130 may output the first response signal FS and the second response signal SS to the data terminal 210 if the request signal RS is input to the data terminal 210 again.

[0199] A4-28. Other embodiments of the device 5: In the first embodiment described above, as shown in Figure 11B, the rising and falling edges of the clock signal SCK were at the same time as the rising and falling edges of signals such as the first response signal FS in the first response period RT1 and the second response signal SS in the second response period RT2. However, this is not limited to this. For example, the rising and falling edges of signals such as the first response signal FS in the first response period RT1 and the second response signal SS in the second response period RT2 may be delayed from the rising and falling edges of the clock signal SCK.

[0200] A4-29. Other Embodiments of the Device 6: In the first embodiment described above, the processing units 136A to 136D of devices 130A to 130D output the first response signal FS and the second response signal SS to the data terminal 210 at different periods of the clock signal SCK, but are not limited to this. For example, the processing units 136A to 136D of devices 130A to 130D may output the first response signal FS and the second response signal SS at the same period of the clock signal SCK. In the connection status determination process, the printing apparatus 20 transmits and receives signals via the individual data lines LSDA1 to LSDA4 electrically connected to each device 130A to 130D. Therefore, even if the first response signal FS and the second response signal SS are output from the data terminal 210 from devices 130A to 130D in the same cycle during the first response period RT1 and the second response period RT2, the sub-control unit 50 of the printing apparatus 20 can detect the voltage output from the data terminal 210 at each of the first timings t1 to the third timing t3. In this case, the request signal RS is set to a high level in the corresponding bit of the command period CMT.

[0201] For example, the processing units 136A to 136D of devices 130A to 130D may output the first response signal FS and the second response signal SS to the data terminal 210 for all cycles D3 to D8 of the first response period RT1 and the second response period RT2. In this case, a first timing t1 may be provided for all cycles D3 to D8 of the first response period RT1. A second timing t2 and a third timing t3 may be provided for all cycles D3 to D8 of the second response period RT2.

[0202] A4-30. Other embodiments of device 130 7: In the first embodiment described above, the processing units 136A to 136D of devices 130A to 130D output the first response signal FS and the second response signal SS to the data terminal 210 during cycles D8 to D5 of the first response period, but are not limited to this. For example, the processing units 136A to 136D of devices 130A to 130D may output the first response signal FS and the second response signal SS to the data terminal 210 during cycles D5 to D8 of the first response period. In this case, the request signal RS is set to a high level in the corresponding bit of the command period CMT.

[0203] A4-31. Other embodiments relating to the device 8: In the first embodiment described above, the device 130 receives a request signal RS at the data terminal 210 and outputs a first response signal FS and a second response signal SS to the data terminal 210. However, the terminal to which the request signal RS is input may be a terminal other than the data terminal 210. Similarly, the terminal to which the first response signal FS and the second response signal SS are output may be a terminal other than the data terminal 210. In that case, the device 130 is connected to that terminal.

[0204] B. Other forms: This disclosure is not limited to the embodiments described above, and can be implemented in various configurations without departing from its spirit. For example, the technical features of the embodiments corresponding to the technical features in each of the embodiments described below can be replaced or combined as appropriate to solve some or all of the above problems or to achieve some or all of the above objectives. If the technical features are not described as essential in this specification, they can be deleted as appropriate. Each of the embodiments below does not need to have all the configurations of this disclosure. Each of the embodiments below only needs to have the minimum configuration necessary to solve the above problems or to achieve the above objectives. Unless otherwise specified, the effects corresponding to one embodiment are independent of the effects corresponding to other embodiments. In a combined embodiment, the effects corresponding to that combined embodiment are produced.

[0205] (1) According to a first embodiment of the present disclosure, a substrate is provided which is mounted on a printing apparatus comprising a print head, a liquid introduction unit for introducing liquid into the print head, a storage unit for housing a liquid storage container and provided with the liquid introduction unit, and a plurality of device-side terminals provided in the storage unit, and which is configured to contact the plurality of device-side terminals. The substrate comprises a base material, a device provided on the base material, and a plurality of terminals provided on the base material, wherein the plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, the first terminal being connected to the device and including a first contact portion to contact a corresponding first device-side terminal among the plurality of device-side terminals, the second terminal being connected to the device and including a second contact portion to contact a corresponding second device-side terminal among the plurality of device-side terminals, the third terminal being connected to the device and including a third contact portion to contact a corresponding third device-side terminal among the plurality of device-side terminals, the fourth terminal being connected to the device and including a fourth contact portion to contact a corresponding fourth device-side terminal among the plurality of device-side terminals, and the fifth terminal being connected to the device and including a fifth contact portion to contact a corresponding fifth device-side terminal among the plurality of device-side terminals. The first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal. In a plan view, two orthogonal lines are defined as the first and second virtual lines. When all contacts of all terminals provided on the substrate are projected onto the second virtual line, all contacts are projected to different positions. The first virtual line passes midway between the two furthest projection positions of all the contacts. With respect to the first virtual line, one region is defined as the first region and the other as the second region. Some of the contacts are located in the first region, and the remaining contacts are located in the second region. The some contacts include the first, second, third, and fourth contacts, and the remaining contacts include the fifth contact. The some contacts and the remaining contacts are arranged asymmetrically with respect to the first virtual line.

[0206] Foreign matter tends to accumulate at the contact points of terminals. For example, foreign matter can get trapped between terminals on the device side. For example, if the terminals on the substrate are arranged on a surface that includes a component in the direction of gravity, when foreign matter enters the substrate from above in the direction of gravity, that foreign matter can be trapped at the contact points of the terminals and remain there. For example, if the foreign matter is a liquid, that liquid tends to accumulate at the contact points of the terminals due to the effect of capillary force. Therefore, by defining the arrangement of the contact points of the terminals rather than the arrangement of the terminals, the possibility of short circuits can be suppressed regardless of the area or shape of the terminals. In this embodiment, the substrate has a first contact point, a second contact point, a third contact point, and a fourth contact point arranged in a first region, and a fifth contact point, where short circuits with other contact points are to be suppressed, is arranged in a second region. By arranging the contact points in this way, the possibility of short circuits can be suppressed. This is because the fifth contact point is separated from the contact points of other terminals, and a distance is maintained between it and the other contact points, thus suppressing the possibility of short circuits between the fifth contact point and the other contact points. Furthermore, while foreign matter tends to accumulate near the contact points, a distance is maintained between the fifth contact point and the other contact points. Therefore, compared to the case where the fifth contact point and the other contact points are located in close proximity, foreign matter accumulated at the fifth contact point is less likely to reach the contact points of the other terminals. Also, foreign matter accumulated at the first to fourth contact points is less likely to reach the contact point of the fifth terminal. This is true regardless of the area or shape of the terminals. Examples of foreign matter include conductive liquids such as ink and pet urine, and conductive solids such as wire, staples, and mechanical pencil leads. Regardless of the actual likelihood of these foreign matter occurring, as long as the possibility is not zero, there is a possibility of a short circuit caused by the foreign matter. In this embodiment, this possibility can be suppressed.

[0207] Among the multiple terminals, there are some that need to be placed separately from other contact points in order to suppress the occurrence of short circuits between terminals. When the contact point to be separated is designated as the fifth contact point, the first to fourth contact points are placed in the first region, which is one region with respect to the first virtual line, and the fifth contact point is placed in the second region, which is the other region. In other words, the contact points in the first region and the contact points in the second region are arranged on the substrate asymmetrically with respect to the first virtual line.

[0208] In this embodiment, all contact points are arranged so that they are projected to different positions in the direction along the second virtual line. If the direction of the first virtual line includes the mounting direction, the presence of foreign matter may cause the foreign matter to be dragged by the terminals on the device side during the process of mounting the liquid container to the printing device, potentially causing a short circuit between the terminals. By arranging all contact points on the substrate so that they are projected to different positions when projected onto the second virtual line, the possibility of a short circuit can be suppressed. Focusing on the first contact point, no contact points other than the first contact point are located on the straight line along the first virtual line passing through the first contact point. On the other hand, in the direction along the second virtual line, contact points other than the first contact point are located. This positional relationship is the same for contact points other than the first contact point. Therefore, the probability of a short circuit occurring in the direction including the direction along the second virtual line is higher than the probability of a short circuit occurring in the direction along the first virtual line. By defining the arrangement of contact points in the direction along the second virtual line, the possibility of a short circuit can be suppressed. Alternatively, by arranging all contact points on the substrate so that they are projected at different positions on the second virtual line, it is possible to ensure spacing between contact points in the direction along the second virtual line on the substrate, thereby suppressing the possibility of short circuits between terminals.

[0209] (2) In the above embodiment, at least one of the second contact portion, the third contact portion, and the fourth contact portion may be projected between the projection position of the first contact portion and the projection position of the fifth contact portion. In this embodiment, at least one of the second contact portion, the third contact portion, and the fourth contact portion is projected between the projection position of the first contact portion and the projection position of the fifth contact portion, thereby creating a certain distance between the first contact portion and the fifth contact portion in the direction along the second imaginary line. This allows the first contact portion and the fifth contact portion to be relatively separated in the direction along the second imaginary line, thereby suppressing the possibility of a short circuit occurring between the first terminal and the fifth terminal.

[0210] (3) In the above embodiment, two or more contact portions from the second contact portion, the third contact portion, and the fourth contact portion may be projected between the projected position of the first contact portion and the projected position of the fifth contact portion. In this embodiment, by arranging two or more other contact portions between the projected positions of the first contact portion and the fifth contact portion in the second virtual line, a certain distance is created between the first contact portion and the fifth contact portion in the direction along the second virtual line. As a result, the first contact portion and the fifth contact portion can be relatively separated in the direction along the second virtual line, and the possibility of a short circuit occurring between the first terminal and the fifth terminal can be further suppressed.

[0211] (4) In the above embodiment, the first contact portion may be positioned so as to be projected between the projected positions of any two of the second, third, and fourth contact portions. In this embodiment, by positioning the first contact portion so as to be projected between the projected positions of any two of the second, third, and fourth contact portions, a certain gap is created between the contact portions that are positioned between the first contact portion in the direction along the second virtual line. As a result, these contact portions can be relatively separated in the direction along the second virtual line, and the possibility of short circuits occurring between terminals having these contact portions can be further suppressed.

[0212] (5) In the above embodiment, the first contact portion may be a data contact portion, the first terminal may be a data terminal, the second contact portion may be a clock contact portion, the second terminal may be a clock terminal, the third contact portion may be a reset contact portion, the third terminal may be a reset terminal, the fourth contact portion may be a power supply contact portion, the fourth terminal may be a power supply terminal, the fifth contact portion may be a ground contact portion, and the fifth terminal may be a ground terminal. According to this embodiment, the possibility of short circuits occurring between the ground terminal and the data terminal, clock terminal, reset terminal, and power supply terminal can be suppressed.

[0213] (6) In the above configuration, the data contact portion and the reset contact portion, or both, are projected between the projection position of the power supply contact portion and the projection position of the clock contact portion, and the reset contact portion may be positioned such that its projection position is adjacent to the projection position of the power supply contact portion. The period during which the clock signal is at a low level is longer than the period during which the reset signal is at a low level. In other words, the load on the device when the power supply terminal and the clock terminal are short-circuited is greater than the load on the board when the power supply terminal and the reset terminal are short-circuited. For this reason, it is preferable to suppress the occurrence of a short circuit between the power supply terminal and the clock terminal rather than the occurrence of a short circuit between the power supply terminal and the reset terminal. According to this configuration, a certain distance is created between the power supply contact portion and the reset contact portion in the direction along the second virtual line. This allows the power supply contact portion and the reset contact portion to be relatively separated in the direction along the second virtual line, thereby further suppressing the possibility of a short circuit occurring between the power supply terminal and the reset terminal. The load on the board in the event of a short circuit can be relatively suppressed.

[0214] (7) In the above configuration, the power supply contact portion may be positioned such that its projection position is adjacent to the projection position of the data contact portion. In this configuration, the driving capability of the power supply terminal is higher than that of the data terminal, and if the data terminal is short-circuited with the power supply terminal, the voltage of the data terminal tends to increase. By making the contact portion adjacent to the data contact portion in the direction along the second virtual line the power supply contact portion, even if the data terminal and the power supply terminal are short-circuited, the short circuit can be detected quickly.

[0215] (8) In the above configuration, the clock contact portion may be positioned so as to be projected at the position furthest from the projection position of the ground contact portion, and the data contact portion, the power supply contact portion, and the reset contact portion may be positioned so as to be projected sequentially in the direction from the projection position of the clock contact portion on the second virtual line toward the projection position of the ground contact portion. This configuration provides the above-mentioned effects.

[0216] (9) In the above configuration, the distance between the data contact portion and the ground contact portion may be longer than the distance between the data contact portion and the clock contact portion. This configuration makes it possible to suppress the possibility of a short circuit between the data terminal and the ground terminal more than the possibility of a short circuit between the data terminal and the clock terminal.

[0217] (10) In the above configuration, the distance between the data contact portion and the ground contact portion may be longer than the distance between the data contact portion and the reset contact portion. With this configuration, the possibility of a short circuit occurring between the data terminal and the ground terminal can be suppressed more than the possibility of a short circuit occurring between the data terminal and the reset terminal.

[0218] (11) In the above configuration, the distance between the data contact portion and the ground contact portion may be longer than the distance between the data contact portion and the power supply contact portion. With this configuration, the possibility of a short circuit occurring between the data terminal and the ground terminal can be suppressed more than the possibility of a short circuit occurring between the data terminal and the reset terminal.

[0219] (12) In the above embodiment, if Wa is the distance in the direction along the second virtual line between the contact portion in the first region, excluding the ground contact portion, that is projected to the position furthest from the projection position of the ground contact portion when projected onto the second virtual line, and the ground contact portion provided in the second region, then the distance in the direction along the second virtual line between the contact portion in the first region, excluding the ground contact portion, that is projected to the position closest to the projection position of the ground contact portion when projected onto the second virtual line, and the ground contact portion provided in the second region, may be Wa / 2 or more. According to this embodiment, a distance of Wa / 2 or more in the direction along the second virtual line can be maintained between the contact portion located furthest from the ground contact portion in the first region and the ground contact portion, thereby suppressing the possibility of short circuits between the ground terminal and terminals other than the ground terminal.

[0220] (13) In the above embodiment, in the first region, among the contact portions excluding the ground contact portion, there does not need to be any other contact portion between the contact portion that is projected to the position closest to the projection position of the ground contact portion when projected onto the second virtual line and the ground contact portion provided in the second region. According to this embodiment, since there is no other contact portion between the contact portion located closest to the ground contact portion in the first region and the ground contact portion, the possibility of a short circuit occurring between the ground terminal and terminals other than the ground terminal can be suppressed.

[0221] (14) In the above configuration, there does not need to be any other contacts on the imaginary line segment connecting the data contact and the clock contact. With this configuration, even if the data terminal and the clock terminal are short-circuited, the short circuit can be detected early.

[0222] (15) In the above configuration, there does not need to be any other contacts on the imaginary line segment connecting the data contact and the reset contact. With this configuration, even if the data terminal and the reset terminal are short-circuited, the short circuit can be detected early.

[0223] (16) In the above configuration, there does not need to be any other contacts on the imaginary line segment connecting the data contact and the power contact. With this configuration, even if the data terminal and the power terminal are short-circuited, the short circuit can be detected early.

[0224] (17) In the above embodiment, when the substrate is mounted in a direction along the direction of gravity, the clock contact portion, the power supply contact portion, and the reset contact portion may be positioned on the side of the direction of gravity that is closer to the data contact portion, and at least one of the clock contact portion, the power supply contact portion, and the reset contact portion may be positioned so as to be projected between the projected position of the data contact portion and the projected position of the ground contact portion. According to this embodiment, when a foreign object such as a highly conductive liquid falls along the direction of gravity, a short circuit can be detected between the data terminal and a terminal including the other contact portions by short-circuiting one of the terminals having multiple other contact portions excluding the data contact portion before the data terminal and the ground terminal are short-circuited, thereby suppressing the possibility of a short circuit occurring between the data terminal and the ground terminal.

[0225] (18) In the above configuration, the clock contact portion, the data contact portion, the power supply contact portion, the reset contact portion, and the ground contact portion may be arranged to form a plurality of rows. According to this configuration, the contact portions can be efficiently arranged within a limited area.

[0226] (19) In the above embodiment, the plurality of rows may consist of two rows, and the two contact portions on the substrate that are projected adjacent to each other when projected onto the second virtual line may form different rows. According to this embodiment, the contact portions can be efficiently arranged within a limited area.

[0227] (20) In the above configuration, the data contact portion and the ground contact portion are arranged in different rows, and one of the clock contact portion, the power supply contact portion, or the reset contact portion may be projected between the projected positions of the data contact portion and the ground contact portion. In this configuration, by arranging the ground contact portion and the data contact portion in different rows and arranging other contact portions in between, the possibility of a short circuit occurring between the data terminal and the power supply terminal can be suppressed. Even if a short circuit occurs between the data terminal and a terminal including other contact portions, the short circuit can be easily detected.

[0228] (21) In the above embodiment, the first terminal may further be used to detect whether or not the substrate is mounted on the printing device. In this embodiment, the first terminal can be used to detect whether or not the substrate is mounted on the printing device.

[0229] (22) In the above configuration, the fifth terminal is a ground terminal, and the voltage supplied to the first terminal, the second terminal, the third terminal, and the fourth terminal may be a voltage acceptable to the device. A voltage acceptable to the device means, for example, a voltage lower than the voltage used to drive the print head, a voltage about the same as the power supply voltage, a voltage lower than the device's withstand voltage, or a voltage that does not damage or cause malfunction to the device. With this configuration, by inputting a voltage acceptable to the device, the possibility of device damage or malfunction is suppressed, and even if a short circuit occurs between at least some terminals, the printing device can detect the short circuit.

[0230] (23) In the above embodiment, the first dashed line may be in a direction that includes a component in the mounting direction in which the substrate is mounted on the printing apparatus.

[0231] (24) In the above embodiment, the voltage supplied to the fourth terminal may be used to drive the device.

[0232] (25) In the above embodiment, the device may output a signal indicating that the first terminal is not short-circuited with any terminal of the plurality of terminals other than the first terminal, and that the substrate is mounted in the printing apparatus.

[0233] (26) In the above embodiment, information related to the liquid contained in the liquid container may be stored in the device.

[0234] (27) According to a second embodiment of the present disclosure, a substrate is provided which is mounted on a printing apparatus comprising a print head, a liquid introduction unit for introducing liquid into the print head, a storage unit for housing a liquid storage container and provided with the liquid introduction unit, and a plurality of device-side terminals provided in the storage unit, and which is configured to contact the plurality of device-side terminals. The substrate comprises a base material, a device provided on the base material, and a plurality of terminals provided on the base material, wherein the plurality of terminals includes a first terminal connected to the device and including a first contact portion to contact a corresponding first device-side terminal among the plurality of device-side terminals, and a group of other terminals, wherein the group of other terminals includes at least a second terminal connected to the device and including a second contact portion to contact a corresponding second device-side terminal among the plurality of device-side terminals, and a third terminal connected to the device and including a third contact portion to contact a corresponding third device-side terminal among the plurality of device-side terminals, wherein the second terminal is short-circuited with at least one of the other terminals excluding the second terminal. Used to detect whether or not, two orthogonal lines are defined as the first and second virtual lines, and when all contact portions of all terminals provided on the substrate are projected onto the second virtual line, all contact portions are projected to different positions, the first virtual line passes midway between the two furthest projection positions of all the contact portions, and when one region is defined as the first region and the other as the second region with respect to the first virtual line, some of the contact portions are located in the first region and the remaining contact portions are located in the second region, the some contact portions include the second and third contact portions, the remaining contact portions include the first contact portions, and the some contact portions and the remaining contact portions are arranged asymmetrically with respect to the first virtual line.

[0235] Foreign matter tends to accumulate at the contact portions of terminals. For example, foreign matter may be caught between a device-side terminal and a terminal. For example, when the terminals of a substrate are arranged on a surface including a component in the direction of gravity, when foreign matter enters toward the substrate from above in the direction of gravity, the foreign matter may be trapped at the contact portion of the terminal and remain there. For example, when the foreign matter is a liquid, the liquid tends to accumulate at the contact portion of the terminal under the influence of capillary force. Therefore, by defining the arrangement of the contact portions of terminals instead of the arrangement of terminals, the possibility of occurrence of short circuits can be suppressed regardless of the area, shape, and the like of the terminals. In this embodiment, on a substrate, a second contact portion and a third contact portion are provided in a first region, and a first contact portion for which it is desired to suppress a short circuit with some contact portions is arranged in a second region. Arranging the contact portions in this manner makes it possible to suppress the possibility of a short circuit. The reason for this is that the first contact portion is separated from the contact portions of other terminals, and a distance between the first contact portion and the other contact portions is secured, so the possibility of occurrence of a short circuit between the first contact portion and the other contact portions can be suppressed. In addition, although foreign matter tends to accumulate in the vicinity of contact portions, since a distance is secured between the first contact portion and the other contact portions, the foreign matter that has accumulated at the first contact portion is less likely to reach other terminals than in a case where the first contact portion and the other contact portions are arranged at a short distance. Further, foreign matter that has accumulated at the second contact portion to the third contact portion is less likely to reach the first terminal. This is the same regardless of the area and shape of the terminals.

[0236] In this embodiment, the other terminal group only needs to include at least a second terminal and a third terminal. For example, when the other terminal group includes only the second terminal and the third terminal, the number of contact portions on the base material can be reduced. This increases the degree of freedom in arranging contact portions on the base material, and can further suppress the possibility of occurrence of short circuits between terminals.

[0237] Among the multiple terminals, there are some that need to be placed separately from other contact points in order to suppress the occurrence of short circuits between terminals. When the contact point to be separated is designated as the first contact point, the second and third contact points are placed in the first region, which is one region with respect to the first virtual line, and the first contact point is placed in the second region, which is the other region. In other words, the contact points in the first region and the contact points in the second region are arranged on the substrate asymmetrically with respect to the first virtual line.

[0238] In this embodiment, all contact points are arranged so that they are projected to different positions in the direction along the second virtual line. If the direction of the first virtual line includes the mounting direction, the presence of foreign matter may cause the foreign matter to be dragged by the terminals on the device side during the process of mounting the liquid container to the printing device, potentially causing a short circuit between the terminals. By arranging all contact points on the substrate so that they are projected to different positions when projected onto the second virtual line, the possibility of a short circuit can be suppressed. Focusing on the first contact point, no contact points other than the first contact point are located on the straight line along the first virtual line passing through the first contact point. On the other hand, in the direction along the second virtual line, contact points other than the first contact point are located. This positional relationship is the same for contact points other than the first contact point. Therefore, the probability of a short circuit occurring in the direction including the direction along the second virtual line is higher than the probability of a short circuit occurring in the direction along the first virtual line. By defining the arrangement of contact points in the direction along the second virtual line, the possibility of a short circuit can be suppressed. Alternatively, by arranging all contact points on the substrate so that they are projected at different positions on the second virtual line, it is possible to ensure spacing between contact points in the direction along the second virtual line on the substrate, thereby suppressing the possibility of short circuits between terminals.

[0239] (28) In the above embodiment, the first contact portion may be a ground contact portion, the first terminal may be a ground terminal, the second contact portion may be a data contact portion, the second terminal may be a data terminal, the third contact portion may be a clock contact portion, and the third terminal may be a clock terminal. This embodiment makes it possible to suppress the possibility of short circuits occurring between the ground contact portion and the data contact portion and the clock contact portion.

[0240] (29) According to a third embodiment of the present disclosure, a substrate is provided which is mounted on a printing apparatus comprising a print head, a liquid introduction unit for introducing liquid into the print head, a storage unit for housing a liquid storage container and provided with the liquid introduction unit, and a plurality of device-side terminals provided in the storage unit, and which is configured to contact the plurality of device-side terminals. The plurality of device-side terminals include a first device-side terminal, a second device-side terminal, a third device-side terminal, a fourth device-side terminal, and a fifth device-side terminal. In a plan view, two orthogonal lines are defined as the first and second virtual lines. When the contact portions of the first device-side terminal, the second device-side terminal, the third device-side terminal, the fourth device-side terminal, and the fifth device-side terminal are projected onto the second virtual line, their projection positions are defined as the first projection position, the second projection position, the third projection position, the fourth projection position, and the fifth projection position, respectively. When the contact portions of all device-side terminals are projected onto the second virtual line, the contact portions of all device-side terminals are projected onto different positions. The first imaginary line passes midway between the two furthest projection positions of the projection lines, and with respect to the first imaginary line, one region is designated as the first region and the other as the second region. In this configuration, some of the contact portions of the device-side terminals are located in the first region, and the remaining contact portions of the device-side terminals are located in the second region. The partial contact portions of the device-side terminals include the contact portions of the first, second, third, and fourth device-side terminals, and the remaining contact portions of the device-side terminals include the contact portion of the fifth device-side terminal. The partial contact portions of the device-side terminals and the remaining contact portions of the device-side terminals are arranged asymmetrically with respect to the first imaginary line.This substrate comprises a base material, a device provided on the base material, and a plurality of terminals provided on the base material, wherein the plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal, the first terminal being connected to the device and including a first contact portion which, when mounted on the printing apparatus, should contact a corresponding first device-side terminal among a plurality of device-side terminals of the printing apparatus, the second terminal being connected to the device and including a second contact portion which, when mounted on the printing apparatus, should contact a corresponding second device-side terminal among the plurality of device-side terminals, and the third terminal being connected to the device and the printing The terminal includes a third contact portion which, when mounted on the device, is to contact the corresponding third device-side terminal among the plurality of device-side terminals; the fourth terminal includes a fourth contact portion which, when connected to the device and mounted on the printing apparatus, is to contact the corresponding fourth device-side terminal among the plurality of device-side terminals; the fifth terminal includes a fifth contact portion which, when connected to the device and mounted on the printing apparatus, is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals; and the first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal.

[0241] Foreign matter tends to accumulate at the contact points of terminals. For example, foreign matter can get trapped between terminals on the device side. For example, if the terminals on the substrate are arranged on a surface that includes a component in the direction of gravity, when foreign matter enters the substrate from above in the direction of gravity, that foreign matter can be trapped at the contact points of the terminals and remain there. For example, if the foreign matter is a liquid, that liquid tends to accumulate at the contact points of the terminals due to the effect of capillary force. Therefore, by defining the arrangement of the contact points of the terminals rather than the arrangement of the terminals, the possibility of short circuits can be suppressed regardless of the area or shape of the terminals. In this embodiment, for multiple device-side terminals, the contact points of the first, second, third, and fourth device-side terminals are arranged in the first region, and the contact point of the fifth device-side terminal, which is to be prevented from short-circuiting with other contact points, is arranged in the second region, and the first to fifth contact points are provided on the substrate so as to correspond to the contact points of those device-side terminals. By arranging the contact points in this manner, the possibility of a short circuit can be suppressed. This is because the fifth contact point is separated from the contact points of the other terminals, and a distance is maintained between it and the other contact points, thus suppressing the possibility of a short circuit between the fifth contact point and the other contact points. In addition, although foreign matter tends to accumulate near the contact points, a distance is maintained between the fifth contact point and the other contact points, so compared to when the fifth contact point and the other contact points are arranged in close proximity, foreign matter accumulated at the fifth contact point is less likely to reach the contact points of the other terminals. Furthermore, foreign matter accumulated at the first to fourth contact points is less likely to reach the contact point of the fifth terminal. This is true regardless of the area or shape of the terminals. Examples of foreign matter include the same foreign matter as in the first embodiment described above. Regardless of the actual likelihood of these foreign matter occurring, as long as the possibility is not zero, there is a possibility of a short circuit caused by the foreign matter. In this embodiment, that possibility can be suppressed.

[0242] Among the multiple terminals, there are some that need to be placed separately from other contact points in order to suppress the occurrence of short circuits between terminals. When the contact point to be separated is designated as the fifth contact point, the first to fourth contact points corresponding to the first device-side terminal to the fourth device-side terminal are placed on the substrate in the first region, which is one region with respect to the first virtual line, and the fifth contact point corresponding to the fifth device-side terminal is placed on the substrate in the second region, which is the other region. In other words, the contact points in the first region and the contact points in the second region are arranged on the substrate asymmetrically with respect to the first virtual line.

[0243] In this embodiment, the contact points corresponding to the contact points of all device-side terminals are arranged so as to be projected to different positions in the direction along the second virtual line. If the direction of the first virtual line includes the mounting direction, the presence of foreign matter may cause the foreign matter to be dragged by the device-side terminals during the process of mounting the liquid container to the printing device, potentially causing a short circuit between the terminals. By arranging all contact points on the substrate so as to be projected to different positions when all device-side terminal contact points are projected onto the second virtual line, the possibility of a short circuit can be suppressed. Focusing on the first contact point, no contact points other than the first contact point are located on the straight line along the first virtual line passing through the first contact point. On the other hand, in the direction along the second virtual line, contact points other than the first contact point are located. This positional relationship is the same for contact points other than the first contact point. Therefore, the probability of a short circuit occurring in the direction including the direction along the second virtual line is higher than the probability of a short circuit occurring in the direction along the first virtual line. By defining the arrangement of contact points in the direction along the second virtual line, the possibility of a short circuit can be suppressed. Alternatively, by arranging all contact points on the substrate so that they are projected at different positions on the second virtual line, it is possible to ensure spacing between contact points in the direction along the second virtual line on the substrate, thereby suppressing the possibility of short circuits between terminals.

[0244] In addition to the above-described forms, this disclosure can also be realized in the form of a liquid container, a printing system, the use of a substrate, the use of a liquid container, a method for manufacturing a substrate or liquid container, etc. [Explanation of Symbols]

[0245] 4, 4C, 4z… Housing section, 5… Print head, 6… Liquid introduction section, 20, 20A, 20C… Printing device, 22… Motor, 26… Roller, 30… Carriage, 31… Cable, 32… Carriage motor, 34… Sliding shaft, 36… Drive belt, 38… Pulley, 39… Control unit, 40… Main control unit, 45… Connection bus, 46… Bus, 50… Sub-control unit, 61… Case, 65… Mounting chamber, 70… Operation section, 80… Connector, 89, 89a, 89z… Corner section, 90… Computer, 100, 100A~100F, 100T, 100g, 100 h, 100p~100s, 100w, 100x, 100y, 100z…Liquid container, 101, 101z…Liquid containment body, 101wf…First wall, 101wr…Second wall, 101wb…Third wall, 101wu…Fourth wall, 101wsa…Fifth wall, 101wsb…Sixth wall, 101ya…Liquid containment body, 101yb…Adapter, 101za…Containment body, 101zb…Cover member, 104…Liquid supply unit, 104f…Film, 104op…Liquid supply port, 105…Liquid flow tube, 106…Protective tube, 107…Bath, 110…Liquid detection member, 111… Liquid containment bag, 112...connecting member, 120, 120A~F, 120Td, 120U, 120V, 120X, 120ab, 120ac, 120ad, 120ae, 120b, 120c, 120d, 120e, 120f, 120g...substrate, 120bd...base material, 120h...mounting base material, 120UA...first substrate area, 120UB...second substrate area, 120UC...third substrate area, 120UD...fourth substrate area, 120fa, 120faa, 120fab...front, 120fb...back, 121...notch, 122...hole, 124a...first base material, 124b...first 2 base material, 130, 130A~130F, 130a, 130b... device, 134... opening, 136, 136A~D... processing unit, 136a... first processing unit, 136b... second processing unit, 138... memory unit, 139... resin, 150... ink chamber, 201... main body, 210... data terminal, 220... clock terminal, 230... power terminal, 240... reset terminal, 250, 250a, 250b, 250c, 250d... grounding terminal, 290... terminal, 301... slit, 310... first container engagement part, 320... second container engagement part, 400, 400Td... connection mechanism, 403,403A~403E…Contact part forming member, 405…Terminal holding part, 410…Device side terminal, 411…Determination unit, 412…Installation determination unit, 414…Short circuit determination unit, 415…CPU, 416…Device side first memory unit, 410,420,430,440,450,490…Device side terminal, 421…Determination unit, 424…Opening, 425…Container side engagement structure, 431~435,439…Relay terminal, 441…Power supply, 474…Attachment / detachment opening, 495…Display panel, 500…Sub-control board, 510,520,530,540,550,590…Sub-control board terminal, 5 11…Switching section, 516…Device-side second storage section, 600…Container mounting section, 812, 812A~D, 822…Liquid flow pipe, 814, 814A~D…Liquid storage section, 824…Liquid container, 1000, 1000A, 1000C, 1000D, 1000E…Printing system, BCC1…First execution command, BCC2…Second execution command, C1…First virtual line, C2…Second virtual line, CMP…Central section, CMT…Command period, D1~D9…Cycle, Dan~Den, DAn~DEn…Distance, DB1…First identification data, DB2…Second identification data EL...conductive wire, FD...first direction, FS...first response signal, FL, fL...first line segment, HSDA, HSDA1~HSDA6, HVDD, HVDD1~HVDD4, HVDD6, HRST, HRST1~HRST4, HRST6, HSCK, HSCK1~HSCK4, HSCK6, HVSS...host terminal, LSDA, LSDA1~LSDA6...data line, LVDD, LVDD1~LVDD4, LVDD6...power line, LRST, LRST1~LRST4, LRST6...reset line, LSCK, LSCK1~LSCK4, LSC K6...Clock line, LVSS...Ground line, MD...Mounting direction, MD1...First mounting direction, MD2...Second mounting direction, MP...Midpoint, P1...First parity data, P2...Second parity data, PA...Printing medium, Pr1,Pr2...Protrusion, R1...First column, R2...Second column, RD...Rotation mounting direction, RS...Request signal, RST...Reset signal, Rg1...First region, Rg2...Second region, Rp...Rotation center, SCK...Clock signal, SD...Second direction, SDA,SDA1~SDA6...Data signals, SL,sL...Second line segment, SS...Second response signal, TL,tL…Third line segment, VDD…Power supply voltage, VSS…Ground potential, Vcr…Virtual circle, Wa…Distance, cp…Contact area, cpa…Partial contact area, cpb…Remaining contact area, cpc…Clock contact area, cpd…Data contact area, cpr…Reset contact area, cpvd…Power supply contact area, cpvs…Ground contact area, dcp…Contact area of ​​device-side terminal, dcpa…Partial contact area, dcpb…Remaining contact area, dcpc…Device-side clock contact area, dcpd…Device-side data contact area, dcpr…Device-side reset contact area, dcpvd…Device-side power supply contact area, dcpvs…Device-side ground contact area, t1…First timing, t2…Second timing, t3…Third timing, t,ta,tb…Timing, swc,swd,swvd,swr,swvs…Projection position

Claims

1. A substrate is mounted on a printing apparatus comprising a print head, a liquid introduction section for introducing liquid into the print head, a storage section for housing a liquid storage container and provided with the liquid introduction section, and a plurality of device-side terminals provided in the storage section, and is configured to contact the plurality of device-side terminals, Substrate and A device provided on the substrate, The substrate comprises a plurality of terminals provided on the substrate, The aforementioned plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal. The first terminal is connected to the device and includes a first contact portion which is to contact a corresponding first device-side terminal among the plurality of device-side terminals. The second terminal is connected to the device and includes a second contact portion which is to contact a corresponding second device-side terminal among the plurality of device-side terminals. The third terminal is connected to the device and includes a third contact portion which is to contact a corresponding third device-side terminal among the plurality of device-side terminals. The fourth terminal is connected to the device and includes a fourth contact portion which is to contact the corresponding fourth device-side terminal among the plurality of device-side terminals. The fifth terminal is connected to the device and includes a fifth contact portion which is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals. The first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal. In plan view, Let two orthogonal lines be the first and second virtual lines, and when all contact points of all terminals provided on the substrate are projected onto the second virtual line, all contact points are projected to different positions, and the first virtual line passes midway between the two furthest projection positions of all the contact points. With respect to the first imaginary line, when one region is designated as the first region and the other as the second region, some of the contact portions are located in the first region, and the remaining contact portions are located in the second region, and the some contact portions include the first contact portion, the second contact portion, the third contact portion, and the fourth contact portion, and the remaining contact portions include the fifth contact portion. A substrate in which the aforementioned portion of the contact area and the remaining contact area are arranged asymmetrically with respect to the first virtual line.

2. A substrate according to claim 1, A substrate is positioned such that at least one of the second, third, and fourth contact portions is projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

3. A substrate according to claim 1 or claim 2, A substrate arranged such that two or more of the second, third, and fourth contact portions are projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

4. A substrate according to any one of claims 1 to 3, The substrate is arranged such that the first contact portion is projected between the projection positions of any two of the second, third, and fourth contact portions.

5. A substrate according to any one of claims 1 to 4, The first contact portion is a data contact portion, and the first terminal is a data terminal. The second contact portion is a clock contact portion, and the second terminal is a clock terminal. The third contact portion is a reset contact portion, and the third terminal is a reset terminal. The fourth contact portion is a power supply contact portion, and the fourth terminal is a power supply terminal. A circuit board in which the fifth contact portion is a ground contact portion and the fifth terminal is a ground terminal.

6. A substrate according to claim 5, A circuit board in which either or both of the data contact portion and the reset contact portion are projected between the projection position of the power contact portion and the projection position of the clock contact portion, wherein the reset contact portion is positioned such that its projection position is adjacent to the projection position of the power contact portion.

7. A substrate according to claim 5 or claim 6, The power supply contact portion is positioned on a circuit board such that its projection position is adjacent to the projection position of the data contact portion.

8. A substrate according to any one of claims 5 to 7, The clock contact portion is positioned such that it is projected to the position furthest from the projection position of the ground contact portion. A circuit board in which the data contact portion, the power contact portion, and the reset contact portion are arranged to be projected sequentially from the projection position of the clock contact portion on the second virtual line toward the projection position of the ground contact portion.

9. A substrate according to any one of claims 5 to 8, A substrate in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the clock contact portion.

10. A substrate according to any one of claims 5 to 9, A circuit board in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the reset contact portion.

11. A substrate according to any one of claims 5 to 10, A circuit board in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the power supply contact portion.

12. A substrate according to any one of claims 5 to 11, In the first region, when Wa is the distance between the contact portion that, when projected onto the second virtual line, is projected to the position furthest from the projection position of the ground contact portion, and the ground contact portion provided in the second region, among the contact portions excluding the ground contact portion, in the direction along the second virtual line, In the first region, the distance between the contact portion that, when projected onto the second virtual line, is closest to the projection position of the ground contact portion, and the ground contact portion provided in the second region, in the direction along the second virtual line, is Wa / 2 or more, among the contact portions excluding the ground contact portion, is Wa / 2 or more.

13. A substrate according to any one of claims 5 to 12, A substrate in the first region, wherein, among the contact portions excluding the ground contact portion, there are no other contact portions between the contact portion that is projected to the position closest to the projection position of the ground contact portion when projected onto the second imaginary line and the ground contact portion provided in the second region.

14. A substrate according to any one of claims 5 to 13, A circuit board in which no other contact points exist on the virtual line segment connecting the data contact point and the clock contact point.

15. A substrate according to any one of claims 5 to 14, A circuit board in which no other contact points exist on the imaginary line segment connecting the data contact point and the reset contact point.

16. A substrate according to any one of claims 5 to 15, A circuit board in which no other contact points exist on the imaginary line segment connecting the data contact point and the power supply contact point.

17. A substrate according to any one of claims 5 to 16, When the substrate is mounted in a direction along the direction of gravity, The clock contact portion, the power supply contact portion, and the reset contact portion are arranged on the gravity side of the data contact portion. A circuit board in which at least one of the clock contact portion, the power contact portion, and the reset contact portion is positioned to be projected between the projection position of the data contact portion and the projection position of the ground contact portion.

18. A substrate according to any one of claims 5 to 17, A circuit board in which the clock contact portion, the data contact portion, the power supply contact portion, the reset contact portion, and the ground contact portion are arranged to form a plurality of rows.

19. A substrate according to claim 18, The aforementioned multiple columns consist of two columns, A substrate in which two adjacent contact points on the substrate are projected onto the second virtual line form different rows.

20. A substrate according to claim 19, The data contact portion and the ground contact portion are arranged in different rows. A circuit board in which one of the clock contact portion, the power supply contact portion, or the reset contact portion is projected between the projection position of the data contact portion and the ground contact portion.

21. A substrate according to any one of claims 1 to 20, The first terminal is further used to detect whether or not the substrate is mounted on the printing apparatus.

22. A substrate according to any one of claims 1 to 21, The fifth terminal is a ground terminal. A substrate in which the voltage supplied to the first terminal, the second terminal, the third terminal, and the fourth terminal is a voltage acceptable to the device.

23. A substrate according to any one of claims 1 to 22, The first dashed line is aligned with a direction that includes a component of the mounting direction in which the substrate is mounted to the printing apparatus.

24. A substrate according to any one of claims 1 to 23, The voltage supplied to the fourth terminal is used to drive the device, and the circuit board.

25. A substrate according to any one of claims 1 to 24, The device is a circuit board that outputs signals indicating that the first terminal and the terminals other than the first terminal among the plurality of terminals are not short-circuited, and that the circuit board is mounted on the printing apparatus.

26. A substrate according to any one of claims 1 to 25, The device includes a substrate that stores information about the liquid contained in the liquid container.

27. A substrate is mounted on a printing apparatus comprising a print head, a liquid introduction section for introducing liquid into the print head, a storage section for housing a liquid storage container and provided with the liquid introduction section, and a plurality of device-side terminals provided in the storage section, and is configured to contact the plurality of device-side terminals, Substrate and A device provided on the substrate, The substrate comprises a plurality of terminals provided on the substrate, The aforementioned multiple terminals are, A first terminal connected to the device and including a first contact portion which is to contact a corresponding first device-side terminal among the plurality of device-side terminals, Other terminal groups, including, The other group of terminals is, A second terminal connected to the aforementioned device, including a second contact portion which is to contact a corresponding second device-side terminal among the plurality of device-side terminals, The device includes at least a third terminal which is connected to the aforementioned device and includes a third contact portion which is to contact a corresponding third device-side terminal among the plurality of device-side terminals, The second terminal is used to detect whether the second terminal is short-circuited with at least one of the other terminals, excluding the second terminal. Let two orthogonal lines be the first and second virtual lines, and when all contact points of all terminals provided on the substrate are projected onto the second virtual line, all contact points are projected to different positions, and the first virtual line passes midway between the two furthest projection positions of all the contact points. With respect to the first imaginary line, when one region is designated as the first region and the other region as the second region, some of the contact portions are located in the first region, the remaining contact portions are located in the second region, the some contact portions include the second and third contact portions, and the remaining contact portions include the first contact portions. A substrate in which the aforementioned portion of the contact area and the remaining contact area are arranged asymmetrically with respect to the first virtual line.

28. A substrate according to claim 27, The first contact portion is a ground contact portion, and the first terminal is a ground terminal. The second contact portion is a data contact portion, and the second terminal is a data terminal. A circuit board in which the third contact portion is a clock contact portion and the third terminal is a clock terminal.

29. A substrate according to claim 28, A substrate in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the clock contact portion.

30. A substrate according to claim 28 or claim 29, A circuit board in which no other contact points exist on the virtual line segment connecting the data contact point and the clock contact point.

31. A substrate according to any one of claims 28 to 30, The aforementioned other terminal group includes a reset terminal which includes a reset contact portion that should contact a corresponding device-side terminal among the plurality of device-side terminals, and the reset contact portion is included in the aforementioned partial contact portion, wherein the circuit board.

32. A substrate according to claim 31, A circuit board in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the reset contact portion.

33. A substrate according to claim 31 or claim 32, A circuit board in which no other contact points exist on the imaginary line segment connecting the data contact point and the reset contact point.

34. A substrate according to any one of claims 28 to 33, The aforementioned other terminal group includes a power terminal which includes a power contact portion that should contact a corresponding device-side terminal among the plurality of device-side terminals, and the power contact portion is included in the aforementioned partial contact portion, wherein the circuit board.

35. A substrate according to claim 34, A circuit board in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the power supply contact portion.

36. A substrate according to claim 34 or claim 35, A circuit board in which no other contact points exist on the imaginary line segment connecting the data contact point and the power supply contact point.

37. A substrate according to any one of claims 34 to 36, A circuit board in which at least one of the clock contact portion, the power supply contact portion, and the reset contact portion is projected between the projection position of the data contact portion and the projection position of the ground contact portion.

38. A substrate according to any one of claims 34 to 37, The voltage supplied to the power terminal is used to drive the device, and the circuit board.

39. A substrate according to any one of claims 28 to 38, In the first region, when Wa is the distance between the contact portion of the other terminal group that is projected to the position furthest from the projection position of the ground contact portion when projected onto the second virtual line, and the ground contact portion provided in the second region, In the first region, the distance between the contact portion of the other terminal group that is projected to the position closest to the projection position of the ground contact portion when projected onto the second virtual line, and the ground contact portion provided in the second region, in the direction along the second virtual line, is Wa / 2 or more, on the substrate.

40. A substrate according to any one of claims 28 to 39, A substrate in which, in the first region, there are no other contacts between the contact portion of the other terminal group that, when projected onto the second virtual line, is projected to the position closest to the projection position of the ground contact portion, and the ground contact portion provided in the second region.

41. A substrate according to any one of claims 28 to 40, When the substrate is mounted in a direction along the direction of gravity, A substrate in which the contact portions of the other terminal groups, excluding the data contact portion, are positioned closer to the direction of gravity than the data contact portion, and the projected positions of the contact portions of the other terminal groups, excluding the data contact portion, are positioned closer than the projected positions of the ground contact portion.

42. A substrate according to any one of claims 27 to 41, The second terminal is used to detect whether or not the substrate is mounted on the printing device.

43. A substrate according to any one of claims 27 to 42, The voltage supplied to the other terminals is a voltage acceptable to the device, on the substrate.

44. A substrate according to any one of claims 27 to 43, The first dashed line is aligned with a direction that includes a component of the mounting direction in which the substrate is mounted to the printing apparatus.

45. A substrate according to any one of claims 27 to 44, The device is a circuit board that outputs signals indicating that the second terminal and the terminals other than the second terminal among the plurality of terminals are not short-circuited, and that the circuit board is mounted on the printing apparatus.

46. A substrate according to any one of claims 27 to 45, The device includes a substrate that stores information about the liquid contained in the liquid container.

47. A substrate is mounted on a printing apparatus comprising a print head, a liquid introduction section for introducing liquid into the print head, a storage section for housing a liquid storage container and provided with the liquid introduction section, and a plurality of device-side terminals provided in the storage section, and is configured to contact the plurality of device-side terminals, wherein the plurality of device-side terminals include a first device-side terminal, a second device-side terminal, a third device-side terminal, a fourth device-side terminal, and a fifth device-side terminal, In plan view, Let two orthogonal lines be the first and second virtual lines, and when the contact points of the first device-side terminal, the second device-side terminal, the third device-side terminal, the fourth device-side terminal, and the fifth device-side terminal are projected onto the second virtual line, their projection positions are designated as the first projection position, the second projection position, the third projection position, the fourth projection position, and the fifth projection position, respectively. When the contact points of all device-side terminals are projected onto the second virtual line, the contact points of all device-side terminals are projected to different positions, and the first virtual line passes midway between the two furthest projection positions of the contact points of all device-side terminals. With respect to the first imaginary line, when one region is designated as the first region and the other as the second region, some of the contact portions of the device-side terminals are located in the first region, and the remaining contact portions of the device-side terminals are located in the second region, and the partial contact portions of the device-side terminals include the contact portions of the first device-side terminal, the second device-side terminal, the third device-side terminal, and the fourth device-side terminal, and the remaining contact portions of the device-side terminals include the contact portion of the fifth device-side terminal. The contact portions of some of the device-side terminals and the contact portions of the remaining device-side terminals are arranged asymmetrically with respect to the first virtual line. The aforementioned substrate is Substrate and A device provided on the substrate, The substrate comprises a plurality of terminals provided on the substrate, The aforementioned plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal. The first terminal is connected to the device and includes a first contact portion which, when mounted on the printing device, is to contact a corresponding first device-side terminal among a plurality of device-side terminals of the printing device. The second terminal is connected to the device and includes a second contact portion which, when mounted on the printing apparatus, is to contact the corresponding second device-side terminal among the plurality of device-side terminals, The third terminal is connected to the device and includes a third contact portion which, when mounted on the printing apparatus, is to contact the corresponding third device-side terminal among the plurality of device-side terminals, The fourth terminal is connected to the device and includes a fourth contact portion which, when mounted on the printing apparatus, is to contact the corresponding fourth device-side terminal among the plurality of device-side terminals, The fifth terminal is connected to the device and includes a fifth contact portion which, when mounted on the printing apparatus, is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals, The first terminal is a circuit board used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal.

48. A substrate according to claim 47, A substrate is positioned such that, between the first projection position and the fifth projection position, at least one of the contact portions of the device-side terminals, including the contact portion of the second device-side terminal, the contact portion of the third device-side terminal, and the contact portion of the fourth device-side terminal, is projected.

49. A substrate according to claim 47 or claim 48, A substrate is positioned such that, between the first projection position and the fifth projection position, the contact portions of two or more of the device-side terminals, including the contact portions of the second device-side terminal, the third device-side terminal, and the fourth device-side terminal, are projected.

50. A substrate according to any one of claims 47 to 49, A substrate in which the contact portion of the first device-side terminal is positioned so as to be projected between the projection positions of any two of the contact portions of the device-side terminals, including the contact portion of the second device-side terminal, the contact portion of the third device-side terminal, and the contact portion of the fourth device-side terminal.

51. A substrate according to any one of claims 47 to 50, The first contact portion is a data contact portion, the first terminal is a data terminal, and the first device-side terminal is a device-side data terminal. The second contact portion is a clock contact portion, the second terminal is a clock terminal, and the second device-side terminal is a device-side clock terminal. The third contact portion is a reset contact portion, the third terminal is a reset terminal, and the third device-side terminal is a device-side reset terminal. The fourth contact portion is a power supply contact portion, the fourth terminal is a power supply terminal, and the fourth device-side terminal is a device-side power supply terminal. A circuit board in which the fifth contact portion is a ground contact portion, the fifth terminal is a ground terminal, and the fifth device-side terminal is a device-side ground terminal.

52. A substrate according to claim 51, Between the fourth projection position and the second projection position, the contact portion of the device-side data terminal and the contact portion of the device-side reset terminal, or both, are positioned so as to be projected. The contact portion of the device-side reset terminal is a circuit board positioned such that its projection position is adjacent to the fourth projection position.

53. A substrate according to claim 51 or claim 52, The contact portion of the device-side power terminal is a circuit board positioned such that its projection position is adjacent to the first projection position.

54. A substrate according to any one of claims 51 to 53, The contact portion of the clock terminal on the device side is positioned so as to be projected to the position furthest from the fifth projection position. A circuit board in which the contact portions of the device-side data terminal, the device-side power terminal, and the device-side reset terminal are arranged to be projected sequentially in the direction from the second projection position toward the fifth projection position on the second virtual line.

55. A substrate according to any one of claims 51 to 54, A circuit board in which the distance between the contact portion of the device-side data terminal and the contact portion of the device-side ground terminal is longer than the distance between the contact portion of the device-side data terminal and the contact portion of the device-side clock terminal.

56. A substrate according to any one of claims 51 to 53, A circuit board in which the distance between the contact portion of the device-side data terminal and the contact portion of the device-side ground terminal is longer than the distance between the contact portion of the device-side data terminal and the contact portion of the device-side reset terminal.

57. A substrate according to any one of claims 51 to 56, A circuit board in which the distance between the contact portion of the device-side data terminal and the contact portion of the device-side ground terminal is longer than the distance between the contact portion of the device-side data terminal and the contact portion of the device-side power terminal.

58. A substrate according to any one of claims 51 to 57, In the first region, among the contact portions of the device-side terminals excluding the contact portion of the device-side grounding terminal, when projected onto the second virtual line, the contact portion of the device-side terminal that is projected to the position furthest from the fifth projection position is Wa, and the contact portion of the device-side grounding terminal provided in the second region in the direction along the second virtual line, In the first region, the distance in the direction along the second virtual line between the contact portion of the device-side terminal that is projected to the position closest to the fifth projection position when projected onto the second virtual line, and the contact portion of the device-side terminal provided in the second region, excluding the contact portion of the device-side grounding terminal, is Wa / 2 or more, on the substrate.

59. A substrate according to any one of claims 51 to 58, A substrate in which, in the first region, there are no other contacts of device-side terminals between the contact portion of the device-side terminal that is projected to the position closest to the fifth projection position when projected onto the second virtual line, excluding the contact portion of the device-side ground terminal, and the contact portion of the device-side ground terminal provided in the second region.

60. A substrate according to any one of claims 51 to 59, A circuit board in which no contact points of other device-side terminals lie on the imaginary line segment connecting the contact point of the device-side data terminal and the contact point of the device-side clock terminal.

61. A substrate according to any one of claims 51 to 60, A circuit board in which no contact points of other device-side terminals lie on the imaginary line segment connecting the contact point of the device-side data terminal and the contact point of the device-side reset terminal.

62. A substrate according to any one of claims 51 to 61, A circuit board in which no contact points of other device-side terminals lie on the imaginary line segment connecting the contact point of the device-side data terminal and the contact point of the device-side power terminal.

63. A substrate according to any one of claims 51 to 62, When the substrate is mounted in a direction along the direction of gravity, The contact portion of the device-side clock terminal, the contact portion of the device-side power terminal, and the contact portion of the device-side reset terminal are positioned on the side of gravity direction than the contact portion of the device-side data terminal. A circuit board in which the contact portion of at least one of the device-side terminals, including the contact portion of the device-side clock terminal, the contact portion of the device-side power terminal, and the contact portion of the device-side reset terminal, is positioned to be projected between the first projection position and the fifth projection position.

64. A substrate according to any one of claims 51 to 63, A circuit board in which the contacts of the device-side clock terminal, the device-side data terminal, the device-side power terminal, the device-side reset terminal, and the device-side ground terminal are arranged to form a plurality of rows.

65. A substrate according to claim 64, The aforementioned multiple columns consist of two columns, When projected onto the second virtual line, the contact points of two adjacent device-side terminals on the substrate form different rows.

66. A substrate according to claim 65, The contact portion of the device-side data terminal and the contact portion of the device-side ground terminal are arranged in different rows. A circuit board is positioned such that the contact portion of one of the following device-side terminals—the device-side clock terminal, the device-side power terminal, or the device-side reset terminal—is projected between the first projection position and the fifth projection position.

67. A substrate according to any one of claims 47 to 66, The first terminal is further used to detect whether or not the substrate is mounted on the printing apparatus.

68. A substrate according to any one of claims 47 to 67, The fifth terminal is a grounding terminal, and the fifth device-side terminal is a device-side grounding terminal. A substrate in which the voltage supplied to the first terminal, the second terminal, the third terminal, and the fourth terminal is a voltage acceptable to the device.

69. A substrate according to any one of claims 47 to 68, The first dashed line is aligned with a direction that includes a component of the mounting direction in which the substrate is mounted to the printing apparatus.

70. A substrate according to any one of claims 47 to 69, The voltage supplied to the fourth terminal is used to drive the device, and the circuit board.

71. A substrate according to any one of claims 47 to 70, The device is a circuit board that outputs signals indicating that the first terminal and the terminals other than the first terminal among the plurality of terminals are not short-circuited, and that the circuit board is mounted on the printing apparatus.

72. A substrate according to any one of claims 47 to 71, The device includes a substrate that stores information about the liquid contained in the liquid container.

73. A liquid storage container to be mounted in the storage section of a printing apparatus comprising a print head, a liquid introduction section for introducing liquid into the print head, a storage section provided with the liquid introduction section, and a plurality of device-side terminals provided in the storage section, A liquid container capable of holding liquid, A liquid supply unit is attached to the liquid introduction section of the printing apparatus and has a liquid supply port for supplying liquid from the liquid container to the liquid introduction section, The device and Equipped with multiple terminals, The aforementioned plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal. The first terminal is connected to the device and includes a first contact portion which is to contact a corresponding first device-side terminal among the plurality of device-side terminals. The second terminal is connected to the device and includes a second contact portion which is to contact a corresponding second device-side terminal among the plurality of device-side terminals. The third terminal is connected to the device and includes a third contact portion which is to contact a corresponding third device-side terminal among the plurality of device-side terminals. The fourth terminal is connected to the device and includes a fourth contact portion which is to contact the corresponding fourth device-side terminal among the plurality of device-side terminals. The fifth terminal is connected to the device and includes a fifth contact portion which is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals. The first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal. In plan view, Let two orthogonal lines be the first and second virtual lines, and when all contact points of all terminals provided on the liquid container are projected onto the second virtual line, all contact points are projected to different positions, and the first virtual line passes midway between the two furthest projection positions of all the contact points. With respect to the first imaginary line, when one region is designated as the first region and the other as the second region, some of the contact portions are located in the first region, and the remaining contact portions are located in the second region, and the some contact portions include the first contact portion, the second contact portion, the third contact portion, and the fourth contact portion, and the remaining contact portions include the fifth contact portion. A liquid container in which the aforementioned portion of the contact area and the remaining contact area are arranged asymmetrically with respect to the first imaginary line.

74. A liquid container according to claim 73, A liquid container arranged such that at least one of the second, third, and fourth contact portions is projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

75. A liquid container according to claim 73 or claim 74, A liquid container arranged such that two or more of the second, third, and fourth contact portions are projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

76. A liquid container according to any one of claims 73 to 75, A liquid container wherein the first contact portion is positioned so as to be projected between the projection positions of any two of the second, third, and fourth contact portions.

77. A liquid container according to any one of claims 73 to 76, The first contact portion is a data contact portion, and the first terminal is a data terminal. The second contact portion is a clock contact portion, and the second terminal is a clock terminal. The third contact portion is a reset contact portion, and the third terminal is a reset terminal. The fourth contact portion is a power supply contact portion, and the fourth terminal is a power supply terminal. A liquid container wherein the fifth contact portion is a ground contact portion, and the fifth terminal is a ground terminal.

78. A liquid container according to claim 77, Between the projection position of the power supply contact portion and the projection position of the clock contact portion, either or both of the data contact portion and the reset contact portion are positioned so as to be projected. The reset contact portion is positioned such that its projection position is adjacent to the projection position of the power supply contact portion in the liquid container.

79. A liquid container according to claim 77 or claim 78, The liquid container is arranged such that the projection position of the power contact portion is adjacent to the projection position of the data contact portion.

80. A liquid container according to any one of claims 77 to 79, The clock contact portion is positioned such that it is projected to the position furthest from the projection position of the ground contact portion. A liquid container in which the data contact portion, the power contact portion, and the reset contact portion are arranged to be projected sequentially from the projection position of the clock contact portion on the second virtual line toward the projection position of the ground contact portion.

81. A liquid container according to any one of claims 77 to 80, A liquid container in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the clock contact portion.

82. A liquid container according to any one of claims 77 to 81, A liquid container in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the reset contact portion.

83. A liquid container according to any one of claims 77 to 82, A liquid container in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the power supply contact portion.

84. A liquid container according to any one of claims 77 to 83, In the first region, among the contact portions excluding the ground contact portion, when projected onto the second virtual line, the contact portion that is projected to the position furthest from the projection position of the ground contact portion is Wa, and the ground contact portion provided in the second region in the direction along the second virtual line, A liquid container in the first region, wherein the distance in the direction along the second virtual line between the contact portion that, when projected onto the second virtual line, is closest to the projection position of the ground contact portion, and the ground contact portion provided in the second region, is Wa / 2 or more.

85. A liquid container according to any one of claims 77 to 84, A liquid container in the first region, wherein, among the contact portions excluding the ground contact portion, there are no other contact portions between the contact portion that is projected to the position closest to the projection position of the ground contact portion when projected onto the second imaginary line and the ground contact portion provided in the second region.

86. A liquid container according to any one of claims 77 to 85, A liquid container in which no other contact points exist on the imaginary line segment connecting the data contact point and the clock contact point.

87. A liquid container according to any one of claims 77 to 86, A liquid container in which no other contact points exist on the imaginary line segment connecting the data contact point and the reset contact point.

88. A liquid container according to any one of claims 77 to 87, A liquid container in which no other contact points exist on the imaginary line segment connecting the data contact point and the power contact point.

89. A liquid container according to any one of claims 77 to 88, When the liquid container is mounted in a direction aligned with the direction of gravity, The clock contact portion, the power supply contact portion, and the reset contact portion are arranged on the gravity side of the data contact portion. A liquid container in which at least one of the clock contact portion, the power contact portion, and the reset contact portion is positioned to be projected between the projection position of the data contact portion and the projection position of the ground contact portion.

90. A liquid container according to any one of claims 77 to 89, A liquid container in which the clock contact portion, the data contact portion, the power contact portion, the reset contact portion, and the ground contact portion are arranged to form a plurality of rows.

91. A liquid container according to claim 90, The aforementioned multiple columns consist of two columns, A liquid container in which, when projected onto the second imaginary line, the two contact points on the liquid container projected adjacent to each other form different rows.

92. A liquid container according to claim 91, The data contact portion and the ground contact portion are arranged in different rows. A liquid container is arranged such that one of the clock contact portion, the power supply contact portion, or the reset contact portion is projected between the projection position of the data contact portion and the ground contact portion.

93. A liquid container according to any one of claims 73 to 92, The first terminal is further used to detect whether or not the liquid container is attached to the printing device, and is a liquid container.

94. A substrate according to any one of claims 73 to 93, The fifth terminal is a ground terminal. A substrate in which the voltage supplied to the first terminal, the second terminal, the third terminal, and the fourth terminal is a voltage acceptable to the device.

95. A liquid container according to any one of claims 73 to 94, The first dashed line is aligned with a direction that includes a component in the mounting direction in which the liquid container is mounted on the printing apparatus, and the liquid container.

96. A liquid container according to any one of claims 73 to 95, Equipped with a circuit board, The substrate is a liquid container comprising the plurality of terminals and the device.

97. A liquid container according to any one of claims 73 to 96, The voltage supplied to the fourth terminal is used to drive the liquid container.

98. A liquid container according to any one of claims 73 to 97, The device outputs a signal indicating that the first terminal and the terminals other than the first terminal among the plurality of terminals are not short-circuited, and that the liquid container is attached to the printing device.

99. A liquid container according to any one of claims 73 to 98, A liquid container, wherein the device stores information about the liquid contained in the liquid container.

100. A liquid storage container to be mounted in the storage section of a printing apparatus comprising a print head, a liquid introduction section for introducing liquid into the print head, a storage section provided with the liquid introduction section, and a plurality of device-side terminals provided in the storage section, A liquid container capable of holding liquid, A liquid supply unit is attached to the liquid introduction section of the printing apparatus and has a liquid supply port for supplying liquid from the liquid container to the liquid introduction section, The device and Equipped with multiple terminals, The aforementioned multiple terminals are, A first terminal connected to the aforementioned device, including a first contact portion which is to contact a corresponding first device-side terminal among a plurality of device-side terminals of the printing apparatus, Other terminal groups, including, The other group of terminals is, A second terminal connected to the aforementioned device, including a second contact portion which is to contact a corresponding second device-side terminal among the plurality of device-side terminals, The device includes at least a third terminal which is connected to the aforementioned device and includes a third contact portion which is to contact a corresponding third device-side terminal among the plurality of device-side terminals, The second terminal is used to detect whether the second terminal is short-circuited with at least one of the other terminals, excluding the second terminal. Let two orthogonal lines be the first and second virtual lines, and when all contact points of all terminals provided on the liquid container are projected onto the second virtual line, all contact points are projected to different positions, and the first virtual line passes midway between the two furthest projection positions of all the contact points. With respect to the first imaginary line, when one region is designated as the first region and the other region as the second region, some of the contact portions are located in the first region, the remaining contact portions are located in the second region, the some contact portions include the second and third contact portions, and the remaining contact portions include the first contact portions. A liquid container in which the aforementioned portion of the contact area and the remaining contact area are arranged asymmetrically with respect to the first imaginary line.

101. A liquid container according to claim 100, The first contact portion is a ground contact portion, and the first terminal is a ground terminal. The second contact portion is a data contact portion, and the second terminal is a data terminal. A liquid container wherein the third contact portion is a clock contact portion, and the third terminal is a clock terminal.

102. A liquid container according to claim 101, A liquid container in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the clock contact portion.

103. A liquid container according to claim 101 or claim 102, A liquid container in which no other contact points exist on the imaginary line segment connecting the data contact point and the clock contact point.

104. A liquid container according to any one of claims 101 to 103, The other terminal group includes a reset terminal which includes a reset contact portion that should contact a corresponding device-side terminal among the plurality of device-side terminals, and the reset contact portion is included in the contact portion of the liquid container.

105. A liquid container according to claim 104, A liquid container in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the reset contact portion.

106. A liquid container according to claim 104 or claim 105, A liquid container in which no other contact points exist on the imaginary line segment connecting the data contact point and the reset contact point.

107. A liquid container according to any one of claims 101 to 106, The aforementioned other terminal group includes a power terminal which includes a power contact portion that should contact a corresponding device-side terminal among the plurality of device-side terminals, and the power contact portion is included in the aforementioned partial contact portion, in a liquid container.

108. A liquid container according to claim 107, A liquid container in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the power supply contact portion.

109. A liquid container according to claim 107 or claim 108, A liquid container in which no other contact points exist on the imaginary line segment connecting the data contact point and the power contact point.

110. A liquid container according to any one of claims 107 to 109, A liquid container is arranged such that at least one of the clock contact, power supply contact, and reset contact is projected between the projection position of the data contact and the projection position of the ground contact.

111. A liquid container according to any one of claims 107 to 110, The voltage supplied to the power terminal is used to drive the device, and the liquid container is also used.

112. A liquid container according to any one of claims 101 to 111, In the first region, when Wa is the distance between the contact portion of the other terminal group that is projected to the position furthest from the projection position of the ground contact portion when projected onto the second virtual line, and the ground contact portion provided in the second region along the second virtual line, A liquid container in which, in the first region, the distance in the direction along the second virtual line between the contact portion of the other terminal group that is projected to the position closest to the projection position of the ground contact portion when projected onto the second virtual line and the ground contact portion provided in the second region is Wa / 2 or more.

113. A liquid container according to any one of claims 101 to 112, A liquid container in the first region, wherein, among the contact portions of the other terminal group, there are no other contact portions between the contact portion that is projected to the position closest to the projection position of the ground contact portion when projected onto the second virtual line and the ground contact portion provided in the second region.

114. A liquid container according to any one of claims 101 to 113, When the liquid container is mounted in a direction aligned with the direction of gravity, A liquid container wherein the contact portions of the other terminal groups, excluding the data contact portion, are positioned closer to the direction of gravity than the data contact portion, and the projected positions of the contact portions of the other terminal groups, excluding the data contact portion, are positioned closer than the projected positions of the ground contact portion.

115. A liquid container according to any one of claims 100 to 114, The second terminal is used to detect whether or not the liquid container is attached to the printing device, and is a liquid container.

116. A liquid container according to any one of claims 100 to 115, A liquid container, wherein the voltage supplied to the other terminals is a voltage acceptable to the device.

117. A liquid container according to any one of claims 100 to 116, Equipped with a circuit board, The substrate is a liquid container comprising the plurality of terminals and the device.

118. A liquid container according to any one of claims 100 to 117, The first dashed line is aligned with a direction that includes a component in the mounting direction in which the liquid container is mounted on the printing apparatus, and the liquid container.

119. A liquid container according to any one of claims 100 to 118, The device outputs a signal indicating that the second terminal and the terminals other than the second terminal among the plurality of terminals are not short-circuited, and that the liquid container is attached to the printing device.

120. A liquid container according to any one of claims 100 to 119, A liquid container, wherein the device stores information about the liquid contained in the liquid container.

121. A liquid storage container to be mounted in the storage section of a printing apparatus comprising a print head, a liquid introduction section for introducing liquid into the print head, a storage section provided with the liquid introduction section, and a plurality of device-side terminals provided in the storage section, The plurality of device-side terminals include a first device-side terminal, a second device-side terminal, a third device-side terminal, a fourth device-side terminal, and a fifth device-side terminal. In plan view, Let two orthogonal lines be the first and second virtual lines, and when the contact points of the first device-side terminal, the second device-side terminal, the third device-side terminal, the fourth device-side terminal, and the fifth device-side terminal are projected onto the second virtual line, their projection positions are designated as the first projection position, the second projection position, the third projection position, the fourth projection position, and the fifth projection position, respectively. When the contact points of all device-side terminals are projected onto the second virtual line, the contact points of all device-side terminals are projected to different positions, and the first virtual line passes midway between the two furthest projection positions of the contact points of all device-side terminals. With respect to the first imaginary line, when one region is designated as the first region and the other as the second region, some of the contact portions of the device-side terminals are located in the first region, and the remaining contact portions of the device-side terminals are located in the second region, and the partial contact portions of the device-side terminals include the contact portions of the first device-side terminal, the second device-side terminal, the third device-side terminal, and the fourth device-side terminal, and the remaining contact portions of the device-side terminals include the contact portion of the fifth device-side terminal. The contact portions of some of the device-side terminals and the contact portions of the remaining device-side terminals are arranged asymmetrically with respect to the first virtual line. The aforementioned liquid container is A liquid container capable of holding liquid, A liquid supply unit is attached to the liquid introduction section of the printing apparatus and has a liquid supply port for supplying liquid from the liquid container to the liquid introduction section, The device and Equipped with multiple terminals, The aforementioned plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal. The first terminal is connected to the device and includes a first contact portion which, when mounted on the printing device, is to contact a corresponding first device-side terminal among a plurality of device-side terminals of the printing device. The second terminal is connected to the device and includes a second contact portion which, when mounted on the printing apparatus, is to contact the corresponding second device-side terminal among the plurality of device-side terminals, The third terminal is connected to the device and includes a third contact portion which, when mounted on the printing apparatus, is to contact the corresponding third device-side terminal among the plurality of device-side terminals, The fourth terminal is connected to the device and includes a fourth contact portion which, when mounted on the printing apparatus, is to contact the corresponding fourth device-side terminal among the plurality of device-side terminals, The fifth terminal is connected to the device and includes a fifth contact portion which, when mounted on the printing apparatus, is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals, A liquid container, wherein the first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal.

122. A liquid container according to claim 121, A liquid container is positioned such that, between the first projection position and the fifth projection position, at least one of the contact portions of the device-side terminals, the second device-side terminal, the third device-side terminal, and the fourth device-side terminal, is projected.

123. A liquid container according to claim 121 or claim 122, A liquid container is positioned such that, between the first projection position and the fifth projection position, the contact portions of two or more of the device-side terminals, including the contact portions of the second device-side terminal, the third device-side terminal, and the fourth device-side terminal, are projected.

124. A liquid container according to any one of claims 121 to 123, A liquid container in which the contact portion of the first device-side terminal is positioned so as to be projected between the projection positions of any two of the contact portions of the device-side terminals, namely the contact portion of the second device-side terminal, the contact portion of the third device-side terminal, and the contact portion of the fourth device-side terminal.

125. A liquid container according to any one of claims 121 to 124, The first contact portion is a data contact portion, the first terminal is a data terminal, and the first device-side terminal is a device-side data terminal. The second contact portion is a clock contact portion, the second terminal is a clock terminal, and the second device-side terminal is a device-side clock terminal. The third contact portion is a reset contact portion, the third terminal is a reset terminal, and the third device-side terminal is a device-side reset terminal. The fourth contact portion is a power supply contact portion, the fourth terminal is a power supply terminal, and the fourth device-side terminal is a device-side power supply terminal. A liquid container wherein the fifth contact portion is a ground contact portion, the fifth terminal is a ground terminal, and the fifth device-side terminal is a device-side ground terminal.

126. A liquid container according to claim 125, Between the fourth projection position and the second projection position, the contact portion of the device-side data terminal and the contact portion of the device-side reset terminal, or both, are positioned so as to be projected. The contact portion of the reset terminal on the device side is a liquid container positioned such that its projection position is adjacent to the fourth projection position.

127. A liquid container according to claim 125 or claim 126, The contact portion of the device-side power terminal is a liquid container positioned such that its projection position is adjacent to the first projection position.

128. A liquid container according to any one of claims 125 to 127, The contact portion of the clock terminal on the device side is positioned so as to be projected to the position furthest from the fifth projection position. A liquid container in which the contacts of the device-side data terminal, the device-side power terminal, and the device-side reset terminal are arranged to be projected sequentially in the direction from the second projection position toward the fifth projection position on the second virtual line.

129. A liquid container according to any one of claims 125 to 128, A liquid container in which the distance between the contact portion of the device-side data terminal and the contact portion of the device-side ground terminal is longer than the distance between the contact portion of the device-side data terminal and the contact portion of the device-side clock terminal.

130. A liquid container according to any one of claims 125 to 128, A liquid container in which the distance between the contact portion of the device-side data terminal and the contact portion of the device-side ground terminal is longer than the distance between the contact portion of the device-side data terminal and the contact portion of the device-side reset terminal.

131. A liquid container according to any one of claims 125 to 130, A liquid container in which the distance between the contact portion of the device-side data terminal and the contact portion of the device-side ground terminal is longer than the distance between the contact portion of the device-side data terminal and the contact portion of the device-side power terminal.

132. A liquid container according to any one of claims 125 to 131, In the first region, among the contact portions of the device-side terminals excluding the contact portion of the device-side grounding terminal, when projected onto the second virtual line, the contact portion of the device-side terminal that is projected to the position furthest from the fifth projection position is Wa, and the contact portion of the device-side grounding terminal provided in the second region in the direction along the second virtual line, A liquid container in the first region, wherein the distance in the direction along the second imaginary line between the contact portion of the device-side terminal that is projected to the position closest to the fifth projection position when projected onto the second imaginary line, and the contact portion of the device-side terminal provided in the second region, is Wa / 2 or more.

133. A liquid container according to any one of claims 125 to 132, A liquid container in the first region, wherein, among the contact portions of the device-side terminals excluding the contact portion of the device-side grounding terminal, there are no other contact portions of device-side terminals between the contact portion of the device-side terminal that is projected to the position closest to the fifth projection position when projected onto the second virtual line and the contact portion of the device-side grounding terminal provided in the second region.

134. A liquid container according to any one of claims 125 to 133, A liquid container in which no contact points of other device-side terminals lie on the imaginary line segment connecting the contact point of the device-side data terminal and the contact point of the device-side clock terminal.

135. A liquid container according to any one of claims 125 to 134, A liquid container in which no contact points of other device-side terminals lie on the imaginary line segment connecting the contact point of the device-side data terminal and the contact point of the device-side reset terminal.

136. A liquid container according to any one of claims 125 to 135, A liquid container in which no contact points of other device-side terminals lie on the imaginary line segment connecting the contact point of the device-side data terminal and the contact point of the device-side power terminal.

137. A liquid container according to any one of claims 125 to 136, When the substrate is mounted in a direction along the direction of gravity, The contact portion of the device-side clock terminal, the contact portion of the device-side power terminal, and the contact portion of the device-side reset terminal are positioned on the side of gravity direction than the contact portion of the device-side data terminal. A liquid container having a contact portion of at least one of the device-side terminals, including the contact portion of the device-side clock terminal, the contact portion of the device-side power terminal, and the contact portion of the device-side reset terminal, positioned so as to be projected between the first projection position and the fifth projection position.

138. A liquid container according to any one of claims 125 to 137, A liquid container in which the contacts of the device-side clock terminal, the device-side data terminal, the device-side power terminal, the device-side reset terminal, and the device-side ground terminal are arranged to form a plurality of rows.

139. A liquid container according to claim 138, The aforementioned multiple columns consist of two columns, A liquid container in which the contact points of two adjacent device-side terminals projected onto the second virtual line form different rows.

140. A liquid container according to claim 139, The contact portion of the device-side data terminal and the contact portion of the device-side ground terminal are arranged in different rows. A liquid container is positioned such that the contact portion of one of the following device-side terminals—the device-side clock terminal, the device-side power terminal, or the device-side reset terminal—is projected between the first projection position and the fifth projection position.

141. A liquid container according to any one of claims 121 to 140, Equipped with a circuit board, The substrate is a liquid container comprising the plurality of terminals and the device.

142. A liquid container according to any one of claims 121 to 141, The first terminal is used to detect whether or not the liquid container is attached to the printing device, and is a liquid container.

143. A liquid container according to any one of claims 121 to 142, The fifth terminal is a grounding terminal, and the fifth device-side terminal is a device-side grounding terminal. A liquid container in which the voltage supplied to the first terminal, the second terminal, the third terminal, and the fourth terminal is a voltage acceptable to the device.

144. A substrate according to any one of claims 121 to 143, The first dashed line is aligned with a substrate that includes a component in the mounting direction in which the liquid container is mounted on the printing apparatus.

145. A liquid container according to any one of claims 121 to 144, The voltage supplied to the fourth terminal is used to drive the liquid container.

146. A liquid container according to any one of claims 121 to 145, The device is a liquid container that outputs a signal indicating that the first terminal and the terminals other than the first terminal among the plurality of terminals are not short-circuited, and that the circuit board is mounted on the printing apparatus.

147. A liquid container according to any one of claims 121 to 146, A liquid container, wherein the device stores information about the liquid contained in the liquid container.

148. A printing system, The device comprises a printing apparatus, a liquid container capable of holding liquid, a liquid supply unit having a liquid supply port, a device, a plurality of terminals, and a substrate on which the device and the plurality of terminals are provided. The printing apparatus comprises a print head, a liquid introduction unit for introducing liquid into the print head, and a plurality of device-side terminals. The liquid supply port supplies liquid from the liquid container to the liquid introduction section of the printing apparatus. The substrate is mounted on the printing apparatus and configured to contact the plurality of terminals on the apparatus side. The aforementioned plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal. The first terminal is connected to the device and includes a first contact portion which is to contact a corresponding first device-side terminal among the plurality of device-side terminals. The second terminal is connected to the device and includes a second contact portion which is to contact a corresponding second device-side terminal among the plurality of device-side terminals. The third terminal is connected to the device and includes a third contact portion which is to contact a corresponding third device-side terminal among the plurality of device-side terminals. The fourth terminal is connected to the device and includes a fourth contact portion which is to contact the corresponding fourth device-side terminal among the plurality of device-side terminals. The fifth terminal is connected to the device and includes a fifth contact portion which is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals. The first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal. In plan view, Let two orthogonal lines be the first and second virtual lines, and when all contact points of all terminals provided on the substrate are projected onto the second virtual line, all contact points are projected to different positions, and the first virtual line passes midway between the two furthest projection positions of all the contact points. With respect to the first imaginary line, when one region is designated as the first region and the other as the second region, some of the contact portions are located in the first region, and the remaining contact portions are located in the second region, and the some contact portions include the first contact portion, the second contact portion, the third contact portion, and the fourth contact portion, and the remaining contact portions include the fifth contact portion. A printing system in which the aforementioned portion of the contact area and the remaining contact area are arranged asymmetrically with respect to the first virtual line.

149. A printing system according to claim 148, A printing system in which at least one of the second contact portion, the third contact portion, and the fourth contact portion is positioned between the projection position of the first contact portion and the projection position of the fifth contact portion.

150. A printing system according to claim 148 or claim 149, A printing system in which two or more contact portions from the second contact portion, the third contact portion, and the fourth contact portion are projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

151. A printing system according to any one of claims 148 to 150, A printing system in which the first contact portion is positioned to be projected between the projection positions of any two of the second, third, and fourth contact portions.

152. A printing system according to any one of claims 148 to 151, The first contact portion is a data contact portion, and the first terminal is a data terminal. The second contact portion is a clock contact portion, and the second terminal is a clock terminal. The third contact portion is a reset contact portion, and the third terminal is a reset terminal. The fourth contact portion is a power supply contact portion, and the fourth terminal is a power supply terminal. A printing system in which the fifth contact portion is a ground contact portion and the fifth terminal is a ground terminal.

153. A printing system according to claim 152, Between the projection position of the power supply contact portion and the projection position of the clock contact portion, either or both of the data contact portion and the reset contact portion are positioned so as to be projected. A printing system in which the reset contact portion is positioned such that its projection position is adjacent to the projection position of the power supply contact portion.

154. A printing system according to claim 152 or claim 153, A printing system in which the power supply contact portion is positioned such that its projection position is adjacent to the projection position of the data contact portion.

155. A printing system according to any one of claims 152 to 154, The clock contact portion is positioned such that it is projected to the position furthest from the projection position of the ground contact portion. A printing system in which the data contact portion, the power contact portion, and the reset contact portion are arranged to be projected sequentially on the second virtual line from the projection position of the clock contact portion toward the projection position of the ground contact portion.

156. A printing system according to any one of claims 152 to 155, A printing system in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the clock contact portion.

157. A printing system according to any one of claims 152 to 156, A printing system in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the reset contact portion.

158. A printing system according to any one of claims 152 to 157, A printing system in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the power supply contact portion.

159. A printing system according to any one of claims 152 to 158, In the first region, among the contact portions excluding the ground contact portion, when projected onto the second virtual line, the contact portion that is projected to the position furthest from the projection position of the ground contact portion is Wa, and the ground contact portion provided in the second region in the direction along the second virtual line, A printing system in which, in the first region, the distance in the direction along the second virtual line between the contact portion that, when projected onto the second virtual line, is closest to the projection position of the ground contact portion, and the ground contact portion provided in the second region, is Wa / 2 or more.

160. A printing system according to any one of claims 152 to 159, A printing system in which, in the first region, among the contact portions excluding the ground contact portion, there are no other contact portions between the contact portion that is projected to the position closest to the projection position of the ground contact portion when projected onto the second virtual line and the ground contact portion provided in the second region.

161. A printing system according to any one of claims 152 to 160, A printing system in which no other contact points exist on the virtual line segment connecting the data contact point and the clock contact point.

162. A printing system according to any one of claims 152 to 161, A printing system in which no other contact points exist on the virtual line segment connecting the data contact point and the reset contact point.

163. A printing system according to any one of claims 152 to 162, A printing system in which no other contact points exist on the imaginary line segment connecting the data contact point and the power supply contact point.

164. A printing system according to any one of claims 152 to 163, When the substrate is mounted in a direction along the direction of gravity, The clock contact portion, the power supply contact portion, and the reset contact portion are arranged on the gravity side of the data contact portion. A printing system in which at least one of the clock contact portion, the power contact portion, and the reset contact portion is positioned to be projected between the projection position of the data contact portion and the projection position of the ground contact portion.

165. A printing system according to any one of claims 152 to 164, A printing system in which the clock contact, data contact, power contact, reset contact, and ground contact are arranged to form a plurality of columns.

166. A printing system according to claim 165, The aforementioned multiple columns consist of two columns, A printing system in which, when projected onto the second virtual line, two adjacent contact points on the substrate that are projected next to each other form different rows.

167. A printing system according to claim 166, The data contact portion and the ground contact portion are arranged in different rows. A printing system in which one of the contacts, the clock contact, the power supply contact, or the reset contact, is positioned between the projection position of the data contact and the ground contact.

168. A printing system according to any one of claims 148 to 167, The first terminal is used to detect whether or not the substrate is mounted on the printing device, in a printing system.

169. A printing system according to any one of claims 148 to 168, The fifth terminal is a ground terminal. A printing system in which the voltage supplied to the first terminal, the second terminal, the third terminal, and the fourth terminal is a voltage acceptable to the device.

170. A printing system according to any one of claims 148 to 169, A printing system in which the first virtual line is aligned in a direction that includes a component of the mounting direction in which the substrate is mounted to the printing apparatus.

171. A printing system according to any one of claims 148 to 170, The voltage supplied to the fourth terminal is used to drive the device in a printing system.

172. A printing system according to any one of claims 148 to 171, The device is a printing system that outputs signals indicating that the first terminal and the terminals other than the first terminal among the plurality of terminals are not short-circuited, and that the circuit board is mounted on the printing apparatus.

173. A printing system according to any one of claims 148 to 172, The aforementioned device is a printing system that stores information about liquids.

174. A printing system, The system comprises a printing device and a liquid container attached to the printing device, The printing apparatus comprises a print head, a liquid introduction unit for introducing liquid into the print head, and a plurality of device-side terminals. The aforementioned liquid container is The device comprises a liquid container capable of holding liquid, a liquid supply unit having a liquid supply port for supplying liquid from the liquid container to the liquid introduction section of the printing apparatus, a device, and a plurality of terminals. The aforementioned plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal. The first terminal is connected to the device and includes a first contact portion which is to contact a corresponding first device-side terminal among the plurality of device-side terminals. The second terminal is connected to the device and includes a second contact portion which is to contact a corresponding second device-side terminal among the plurality of device-side terminals. The third terminal is connected to the device and includes a third contact portion which is to contact a corresponding third device-side terminal among the plurality of device-side terminals. The fourth terminal is connected to the device and includes a fourth contact portion which is to contact the corresponding fourth device-side terminal among the plurality of device-side terminals. The fifth terminal is connected to the device and includes a fifth contact portion which is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals. The first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal. In plan view, Let two orthogonal lines be the first and second virtual lines, and when all contact points of all terminals provided on the liquid container are projected onto the second virtual line, all contact points are projected to different positions, and the first virtual line passes midway between the two furthest projection positions of all the contact points. With respect to the first imaginary line, when one region is designated as the first region and the other as the second region, some of the contact portions are located in the first region, and the remaining contact portions are located in the second region, and the some contact portions include the first contact portion, the second contact portion, the third contact portion, and the fourth contact portion, and the remaining contact portions include the fifth contact portion. A printing system in which the aforementioned portion of the contact area and the remaining contact area are arranged asymmetrically with respect to the first virtual line.

175. A printing system according to claim 174, A printing system in which at least one of the second, third, and fourth contact portions is projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

176. A printing system according to claim 174 or claim 175, A printing system in which two or more contact portions from the second contact portion, the third contact portion, and the fourth contact portion are projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

177. A printing system according to any one of claims 174 to 176, A printing system in which the first contact portion is positioned to be projected between the projection positions of any two of the second, third, and fourth contact portions.

178. A printing system according to any one of claims 174 to 177, The first contact portion is a data contact portion, and the first terminal is a data terminal. The second contact portion is a clock contact portion, and the second terminal is a clock terminal. The third contact portion is a reset contact portion, and the third terminal is a reset terminal. The fourth contact portion is a power supply contact portion, and the fourth terminal is a power supply terminal. A printing system in which the fifth contact portion is a ground contact portion and the fifth terminal is a ground terminal.

179. A printing system according to claim 178, Between the projection position of the power supply contact portion and the projection position of the clock contact portion, either or both of the data contact portion and the reset contact portion are positioned so as to be projected. A printing system in which the reset contact portion is positioned such that its projection position is adjacent to the projection position of the power supply contact portion.

180. A printing system according to claim 178 or claim 179, A printing system in which the power supply contact portion is positioned such that its projection position is adjacent to the projection position of the data contact portion.

181. A printing system according to any one of claims 178 to 180, The clock contact portion is positioned such that it is projected to the position furthest from the projection position of the ground contact portion. A printing system in which the data contact portion, the power contact portion, and the reset contact portion are arranged to be projected sequentially on the second virtual line from the projection position of the clock contact portion toward the projection position of the ground contact portion.

182. A printing system according to any one of claims 178 to 181, A printing system in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the clock contact portion.

183. A printing system according to any one of claims 178 to 182, A printing system in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the reset contact portion.

184. A printing system according to any one of claims 178 to 183, A printing system in which the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the power supply contact portion.

185. A printing system according to any one of claims 178 to 184, In the first region, when Wa is the distance in the direction along the second virtual line between the contact portion that is projected to the position furthest from the projection position of the ground contact portion when projected onto the second virtual line, and the ground contact portion provided in the second region, A printing system in which, in the first region, the distance in the direction along the second virtual line between the contact portion that, when projected onto the second virtual line, is closest to the projection position of the ground contact portion, and the ground contact portion provided in the second region, is Wa / 2 or more.

186. A printing system according to any one of claims 178 to 185, A printing system in which, in the first region, among the contact portions excluding the ground contact portion, there are no other contact portions between the contact portion that is projected to the position closest to the projection position of the ground contact portion when projected onto the second virtual line and the ground contact portion provided in the second region.

187. A printing system according to any one of claims 178 to 186, A printing system in which no other contact points exist on the virtual line segment connecting the data contact point and the clock contact point.

188. A printing system according to any one of claims 178 to 187, A printing system in which no other contact points exist on the virtual line segment connecting the data contact point and the reset contact point.

189. A printing system according to any one of claims 178 to 188, A printing system in which no other contact points exist on the imaginary line segment connecting the data contact point and the power supply contact point.

190. A printing system according to any one of claims 178 to 189, When the liquid container is mounted in a direction aligned with the direction of gravity, The clock contact portion, the power supply contact portion, and the reset contact portion are arranged on the gravity side of the data contact portion. A printing system in which at least one of the clock contact portion, the power contact portion, and the reset contact portion is positioned to be projected between the projection position of the data contact portion and the projection position of the ground contact portion.

191. A printing system according to any one of claims 178 to 190, A printing system in which the clock contact, data contact, power contact, reset contact, and ground contact are arranged to form a plurality of columns.

192. A printing system according to claim 191, The aforementioned multiple columns consist of two columns, A printing system in which two contact points on the liquid container that are projected adjacently onto the second virtual line form different rows.

193. A printing system according to claim 192, The data contact portion and the ground contact portion are arranged in different rows. A printing system in which one of the contacts, the clock contact, the power supply contact, or the reset contact, is positioned between the projection position of the data contact and the ground contact.

194. A printing system according to any one of claims 174 to 193, The first terminal is used to detect whether or not the liquid container is attached to the printing device, in a printing system.

195. A printing system according to any one of claims 174 to 194, The fifth terminal is a ground terminal. A printing system in which the voltage supplied to the first terminal, the second terminal, the third terminal, and the fourth terminal is a voltage acceptable to the device.

196. A printing system according to any one of claims 174 to 195, A printing system in which the first dashed line is aligned in a direction that includes a component in the mounting direction in which the liquid container is mounted on the printing device.

197. A printing system according to any one of claims 174 to 196, Equipped with a circuit board, The substrate is a printing system comprising the plurality of terminals and the device.

198. A printing system according to any one of claims 174 to 197, The voltage supplied to the fourth terminal is used to drive the device in a printing system.

199. A printing system according to any one of claims 174 to 198, The device is a printing system that outputs signals indicating that the first terminal and the terminals other than the first terminal among the plurality of terminals are not short-circuited, and that the liquid container is attached to the printing device.

200. A printing system according to any one of claims 174 to 199, A printing system in which the device stores information about the liquid contained in the liquid container.

201. A substrate is used which is mounted on a printing apparatus comprising a print head, a liquid introduction section for introducing liquid into the print head, a storage section provided with the liquid introduction section and housing a liquid storage container, and a plurality of device-side terminals provided in the storage section, and is configured to contact the plurality of device-side terminals, Substrate and A device provided on the substrate, The substrate comprises a plurality of terminals provided on the substrate, The aforementioned plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal. The first terminal is connected to the device and includes a first contact portion which is to contact a corresponding first device-side terminal among the plurality of device-side terminals. The second terminal is connected to the device and includes a second contact portion which is to contact a corresponding second device-side terminal among the plurality of device-side terminals. The third terminal is connected to the device and includes a third contact portion which is to contact a corresponding third device-side terminal among the plurality of device-side terminals. The fourth terminal is connected to the device and includes a fourth contact portion which is to contact the corresponding fourth device-side terminal among the plurality of device-side terminals. The fifth terminal is connected to the device and includes a fifth contact portion which is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals. The first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal. In plan view, Let two orthogonal lines be the first and second virtual lines, and when all contact points of all terminals provided on the substrate are projected onto the second virtual line, all contact points are projected to different positions, and the first virtual line passes midway between the two furthest projection positions of all the contact points. With respect to the first imaginary line, when one region is designated as the first region and the other as the second region, some of the contact portions are located in the first region, and the remaining contact portions are located in the second region, and the some contact portions include the first contact portion, the second contact portion, the third contact portion, and the fourth contact portion, and the remaining contact portions include the fifth contact portion. The use of a substrate wherein the aforementioned portion of the contact area and the remaining contact area are arranged asymmetrically with respect to the first virtual line.

202. The use of the substrate according to claim 201, The use of a substrate in which at least one of the second, third, and fourth contact portions is projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

203. Use of a substrate according to claim 201 or claim 202, The use of a substrate in which two or more contact portions from the second contact portion, the third contact portion, and the fourth contact portion are projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

204. Use of a substrate according to any one of claims 201 to 203, The use of a substrate in which the first contact portion is positioned so as to be projected between the projection positions of any two of the second, third, and fourth contact portions.

205. Use of a substrate according to any one of claims 201 to 204, The first contact portion is a data contact portion, and the first terminal is a data terminal. The second contact portion is a clock contact portion, and the second terminal is a clock terminal. The third contact portion is a reset contact portion, and the third terminal is a reset terminal. The fourth contact portion is a power supply contact portion, and the fourth terminal is a power supply terminal. The use of a circuit board in which the fifth contact portion is a ground contact portion and the fifth terminal is a ground terminal.

206. The use of the substrate according to claim 205, Between the projection position of the power supply contact portion and the projection position of the clock contact portion, either or both of the data contact portion and the reset contact portion are positioned so as to be projected. The reset contact portion is positioned on a circuit board such that its projection position is adjacent to the projection position of the power supply contact portion.

207. Use of the substrate according to claim 205 or claim 206, The power supply contact portion is positioned on a circuit board such that its projection position is adjacent to the projection position of the data contact portion.

208. Use of a substrate according to any one of claims 205 to 207, The clock contact portion is positioned such that it is projected to the position furthest from the projection position of the ground contact portion. The use of a circuit board in which the data contact portion, the power contact portion, and the reset contact portion are arranged so that they are projected sequentially in the direction from the projection position of the clock contact portion to the projection position of the ground contact portion on the second virtual line.

209. Use of a substrate according to any one of claims 205 to 208, The use of a circuit board wherein the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the clock contact portion.

210. Use of a substrate according to any one of claims 205 to 209, The use of a circuit board wherein the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the reset contact portion.

211. Use of a substrate according to any one of claims 205 to 210, The use of a circuit board wherein the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the power supply contact portion.

212. Use of a substrate according to any one of claims 205 to 211, In the first region, among the contact portions excluding the ground contact portion, when projected onto the second virtual line, the contact portion that is projected to the position furthest from the projection position of the ground contact portion is Wa, and the ground contact portion provided in the second region in the direction along the second virtual line, In the first region, the distance between the contact portion that, when projected onto the second virtual line, is closest to the projection position of the ground contact portion, and the ground contact portion provided in the second region, in the direction along the second virtual line, is Wa / 2 or more, according to the use of a substrate.

213. Use of a substrate according to any one of claims 205 to 212, In the first region, the use of a substrate in which, among the contact portions excluding the ground contact portion, there are no other contact portions between the contact portion that is projected to the position closest to the projection position of the ground contact portion when projected onto the second virtual line and the ground contact portion provided in the second region.

214. Use of a substrate according to any one of claims 205 to 213, The use of a circuit board in which no other contact points exist on the virtual line segment connecting the data contact point and the clock contact point.

215. Use of a substrate according to any one of claims 205 to 214, A substrate is used in which no other contact points exist on the imaginary line segment connecting the data contact point and the reset contact point.

216. Use of a substrate according to any one of claims 205 to 215, The use of a circuit board in which no other contact points exist on the imaginary line segment connecting the data contact point and the power supply contact point.

217. Use of a substrate according to any one of claims 205 to 216, When the substrate is mounted in a direction along the direction of gravity, The clock contact portion, the power supply contact portion, and the reset contact portion are arranged on the gravity side of the data contact portion. The use of a circuit board wherein at least one of the clock contact portion, the power contact portion, and the reset contact portion is positioned to be projected between the projection position of the data contact portion and the projection position of the ground contact portion.

218. Use of a substrate according to any one of claims 205 to 217, The use of a circuit board in which the clock contact portion, the data contact portion, the power supply contact portion, the reset contact portion, and the ground contact portion are arranged to form a plurality of rows.

219. The use of the substrate according to claim 218, The aforementioned multiple columns consist of two columns, The use of a substrate in which two contact points on the substrate that are projected adjacently onto the second virtual line form different rows.

220. The use of the substrate according to claim 219, The data contact portion and the ground contact portion are arranged in different rows. The use of a circuit board arranged such that one of the clock contact portion, the power supply contact portion, or the reset contact portion is projected between the projection position of the data contact portion and the ground contact portion.

221. Use of a substrate according to any one of claims 201 to 220, The first terminal is used to detect whether or not the substrate is mounted on the printing device.

222. Use of a substrate according to any one of claims 201 to 221, The use of a substrate wherein the voltage supplied to the first terminal, the second terminal, the third terminal, and the fourth terminal is a voltage acceptable to the device.

223. Use of a substrate according to any one of claims 201 to 222, The use of the substrate, wherein the first dashed line is aligned in a direction that includes a component of the mounting direction in which the substrate is mounted on the printing apparatus.

224. Use of a substrate according to any one of claims 201 to 223, The voltage supplied to the fourth terminal is used to drive the device, and the circuit board is used.

225. Use of a substrate according to any one of claims 201 to 224, The device outputs a signal indicating that the first terminal and the terminals other than the first terminal among the plurality of terminals are not short-circuited, and that the circuit board is mounted on the printing apparatus.

226. Use of a substrate according to any one of claims 201 to 225, The device uses a substrate that stores information about the liquid contained in the liquid container.

227. The use of a liquid storage container attached to the storage section of a printing apparatus comprising a print head, a liquid introduction section for introducing liquid into the print head, a storage section provided with the liquid introduction section, and a plurality of device-side terminals provided in the storage section, A liquid container capable of holding liquid, A liquid supply unit is attached to the liquid introduction section of the printing apparatus and has a liquid supply port for supplying liquid from the liquid container to the liquid introduction section, The device and Equipped with multiple terminals, The aforementioned plurality of terminals include at least a first terminal, a second terminal, a third terminal, a fourth terminal, and a fifth terminal. The first terminal is connected to the device and includes a first contact portion which is to contact a corresponding first device-side terminal among the plurality of device-side terminals. The second terminal is connected to the device and includes a second contact portion which is to contact a corresponding second device-side terminal among the plurality of device-side terminals. The third terminal is connected to the device and includes a third contact portion which is to contact a corresponding third device-side terminal among the plurality of device-side terminals. The fourth terminal is connected to the device and includes a fourth contact portion which is to contact the corresponding fourth device-side terminal among the plurality of device-side terminals. The fifth terminal is connected to the device and includes a fifth contact portion which is to contact the corresponding fifth device-side terminal among the plurality of device-side terminals. The first terminal is used to detect whether the first terminal is short-circuited with at least one of the second terminal, the third terminal, and the fourth terminal. In plan view, Let two orthogonal lines be the first and second virtual lines, and when all contact points of all terminals provided on the liquid container are projected onto the second virtual line, all contact points are projected to different positions, and the first virtual line passes midway between the two furthest projection positions of all the contact points. With respect to the first imaginary line, when one region is designated as the first region and the other as the second region, some of the contact portions are located in the first region, and the remaining contact portions are located in the second region, and the some contact portions include the first contact portion, the second contact portion, the third contact portion, and the fourth contact portion, and the remaining contact portions include the fifth contact portion. The use of a liquid container wherein the aforementioned portion of the contact area and the remaining contact area are arranged asymmetrically with respect to the first imaginary line.

228. The use of the liquid container according to claim 227, The use of a liquid container is such that at least one of the second, third, and fourth contact portions is projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

229. Use of a liquid container according to claim 227 or claim 228, The use of a liquid container in which two or more contact portions from the second contact portion, the third contact portion, and the fourth contact portion are projected between the projection position of the first contact portion and the projection position of the fifth contact portion.

230. Use of a liquid container according to any one of claims 227 to 229, The use of a liquid container wherein the first contact portion is positioned to be projected between the projection positions of any two of the second, third, and fourth contact portions.

231. Use of a liquid container according to any one of claims 227 to 230, The first contact portion is a data contact portion, and the first terminal is a data terminal. The second contact portion is a clock contact portion, and the second terminal is a clock terminal. The third contact portion is a reset contact portion, and the third terminal is a reset terminal. The fourth contact portion is a power supply contact portion, and the fourth terminal is a power supply terminal. The use of a liquid container wherein the fifth contact portion is a ground contact portion and the fifth terminal is a ground terminal.

232. The use of the liquid container according to claim 231, Between the projection position of the power supply contact portion and the projection position of the clock contact portion, either or both of the data contact portion and the reset contact portion are positioned so as to be projected. The use of a liquid container in which the reset contact portion is positioned such that its projection position is adjacent to the projection position of the power supply contact portion.

233. Use of a liquid container according to claim 231 or claim 232, The use of a liquid container in which the power supply contact portion is positioned such that its projection position is adjacent to the projection position of the data contact portion.

234. Use of a liquid container according to any one of claims 231 to 233, The clock contact portion is positioned such that it is projected to the position furthest from the projection position of the ground contact portion. The use of a liquid container wherein the data contact portion, the power contact portion, and the reset contact portion are arranged so that they are projected sequentially in the direction from the projection position of the clock contact portion toward the projection position of the ground contact portion on the second virtual line.

235. Use of a liquid container according to any one of claims 231 to 234, The use of a liquid container wherein the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the clock contact portion.

236. Use of a liquid container according to any one of claims 231 to 235, The use of a liquid container wherein the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the reset contact portion.

237. Use of a liquid container according to any one of claims 231 to 236, The use of a liquid container wherein the distance between the data contact portion and the ground contact portion is longer than the distance between the data contact portion and the power supply contact portion.

238. Use of a liquid container according to any one of claims 231 to 237, In the first region, among the contact portions excluding the ground contact portion, when projected onto the second virtual line, the contact portion that is projected to the position furthest from the projection position of the ground contact portion is Wa, and the ground contact portion provided in the second region in the direction along the second virtual line, In the first region, the distance between the contact portion that, when projected onto the second imaginary line, is closest to the projection position of the ground contact portion, and the ground contact portion provided in the second region, in the direction along the second imaginary line, is Wa / 2 or more, for use as a liquid container.

239. Use of a liquid container according to any one of claims 231 to 238, The use of a liquid container in the first region, wherein, among the contact portions excluding the ground contact portion, there are no other contact portions between the contact portion that is projected to the position closest to the projection position of the ground contact portion when projected onto the second imaginary line and the ground contact portion provided in the second region.

240. Use of a liquid container according to any one of claims 231 to 239, The use of a liquid container in which no other contact points exist on the imaginary line segment connecting the data contact point and the clock contact point.

241. Use of a liquid container according to any one of claims 231 to 240, The use of a liquid container in which no other contact points exist on the imaginary line segment connecting the data contact point and the reset contact point.

242. Use of a liquid container according to any one of claims 231 to 241, The use of a liquid container in which no other contact points exist on the imaginary line segment connecting the data contact point and the power supply contact point.

243. Use of a liquid container according to any one of claims 231 to 242, When the liquid container is mounted in a direction aligned with the direction of gravity, The clock contact portion, the power supply contact portion, and the reset contact portion are arranged on the gravity side of the data contact portion. The use of a liquid container wherein at least one of the clock contact portion, the power contact portion, and the reset contact portion is positioned to be projected between the projection position of the data contact portion and the projection position of the ground contact portion.

244. Use of a liquid container according to any one of claims 231 to 243, The use of a liquid container wherein the clock contact portion, the data contact portion, the power supply contact portion, the reset contact portion, and the ground contact portion are arranged to form a plurality of rows.

245. The use of the liquid container according to claim 244, The aforementioned multiple columns consist of two columns, Use of the liquid container, where two contact points on the liquid container that are projected adjacently onto the second virtual line form different rows.

246. The use of the liquid container according to claim 245, The data contact portion and the ground contact portion are arranged in different rows. The use of a liquid container is such that one of the contacts among the clock contact, power supply contact, and reset contact is projected between the projection position of the data contact and the ground contact.

247. Use of a liquid container according to any one of claims 227 to 246, The first terminal is further used to detect whether or not the liquid container is attached to the printing device, the use of the liquid container.

248. Use of a liquid container according to any one of claims 227 to 247, The use of a liquid container wherein the voltage supplied to the first terminal, the second terminal, the third terminal, and the fourth terminal is a voltage acceptable to the device.

249. Use of a liquid container according to any one of claims 227 to 248, The use of a liquid container, wherein the first dashed line is aligned in a direction that includes a component in the mounting direction in which the liquid container is mounted on the printing apparatus.

250. Use of a liquid container according to any one of claims 227 to 249, Equipped with a circuit board, The substrate is used as a liquid container, comprising the plurality of terminals and the device.

251. Use of a liquid container according to any one of claims 227 to 250, The voltage supplied to the fourth terminal is used to drive the device, and the liquid container is used.

252. Use of a liquid container according to any one of claims 227 to 251, The device outputs a signal indicating that the first terminal and the terminals other than the first terminal among the plurality of terminals are not short-circuited, and that the liquid container is attached to the printing device.

253. Use of a liquid container according to any one of claims 227 to 252, The use of a liquid container, wherein the device stores information about the liquid contained in the liquid container.

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