Device, and printing system

Abstract

To detect that no short circuit occurs between terminals contacting a plurality of device side terminals.SOLUTION: A device outputs first low voltage to a first terminal at a first timing during a period when voltage inputted to a second terminal is high voltage, outputs second high voltage to the first terminal at a second timing during a period when voltage inputted to the second terminal is low voltage after the first low voltage is outputted, and the second low voltage is outputted to the first terminal at a third timing during a period when voltage inputted to the second terminal is high voltage after the second high voltage is outputted.SELECTED DRAWING: Figure 11B

Description

Technical Field

[0001] The present disclosure relates to technologies of devices, substrates, liquid storage containers, Printing systems, and the use of substrates or liquid storage containers.

Background Art

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

[0003] Also, regarding an ink cartridge detachably attached to a printing device, a technique for detecting the attachment of the Ink cartridge using memory terminals is known (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 device to the host terminal via any one of a reset terminal, a clock terminal, and a data terminal. The host device determines whether or not the storage device is connected to the host device based on the response signal from the storage device without using a connection detection dedicated terminal.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, Patent Documents 1 and 2 do not touch on the detection of a short circuit between memory terminals. In Patent Document 1, if a short circuit occurs between memory terminals, even if it is determined that the ink cartridge is mounted on the printing apparatus, there is a possibility that the printing apparatus may not operate normally, or that reading and writing to the memory of the ink cartridge may not be performed properly. In Patent Document 2, if a short circuit occurs between memory terminals, there is a possibility that the memory may not be able to output the original signal to the printing apparatus, and the printing apparatus may not be able to determine that the memory is properly connected to the printing apparatus.

[0006] The present disclosure has been made to solve the above problems, and one of the objects is to provide a technique capable of detecting that no short circuit has occurred between terminals in a liquid storage container such as an ink cartridge. Or, one of the objects is to provide a technique capable of detecting that a liquid storage container is mounted. Or, one of the objects is to provide a technique capable of detecting a short circuit even if a short circuit occurs between terminals. Or, one of the objects is to provide a technique capable of suppressing a short circuit between terminals. The present disclosure achieves at least one of the above plurality of objects.

Means for Solving the Problems

[0007] According to a first aspect of the present disclosure, there is provided a device configured to be electrically connected to a plurality of terminals of a liquid storage container mounted in a storage portion of a printing apparatus including 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. This device is configured to satisfy I, II, III, and IV described below. I: Output a first signal including a first low voltage, a second low voltage, and a second signal including a second high voltage higher than the second low voltage to a first terminal included in the plurality of terminals. II: The first signal and the second signal are used by the printing apparatus to determine that the first terminal and other terminals other than the first terminal included in the plurality of terminals are not short-circuited and that the liquid storage container is mounted on the printing apparatus. III: Output the first signal to the first terminal, and after outputting the first signal, output the second signal to the first terminal. IV: A clock signal in which a low voltage and a high voltage are repeated alternately and at a predetermined period is input to a second terminal included in the other terminals. At a first timing during a period in which the voltage input to the second terminal is the high voltage, output the first low voltage to the first terminal. After outputting the first low voltage, at a second timing during a period in which the voltage input to the second terminal is the low voltage, output the second high voltage to the first terminal. After outputting the second high voltage, at a third timing during a period in which the voltage input to the second terminal is the high voltage, output the second low voltage to the first terminal.

[0008] According to a second aspect of the present disclosure, there is provided a substrate that is mounted on a printing apparatus including a print head, a liquid introduction unit that introduces liquid into the print head, a housing unit that is provided with the liquid introduction unit and houses a liquid storage container, and a plurality of device-side terminals provided in the housing unit, and is configured to contact the plurality of device-side terminals. The substrate includes a base material, a device provided on the base material, and a plurality of terminals provided on the base material and electrically connected to the device. The plurality of terminals include a first terminal and other terminals including a second terminal, and are configured to satisfy I, II, III, and IV described below. I: The device outputs a first signal including a first low voltage, a second low voltage, and a second signal including a second high voltage higher than the second low voltage from the first terminal to the printing apparatus. II: The first signal and the second signal are used by the printing device to determine that the first terminal and the other terminal are not short-circuited and that the substrate is mounted on the printing device. III: The device outputs the first signal to the first terminal, and after outputting the first signal, outputs the second signal to the first terminal. IV: When the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined period is input from the printing device to the second terminal. At a first timing during a period in which the voltage input to the second terminal is the high voltage, as a first expected value, the first low voltage is output from the first terminal to the printing device. After outputting the first low voltage, at a second timing during a period in which the voltage input to the second terminal is the low voltage, as a second expected value, the second high voltage is output from the first terminal to the printing device. After outputting the second high voltage, at a third timing during a period in which the voltage input to the second terminal is the high voltage, as a third expected value, the second low voltage is output from the first terminal to the printing device.

[0009] According to a third aspect of the present disclosure, there is provided a liquid storage container mounted in a storage portion of a printing device including 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 storage container includes a liquid storage body capable of storing liquid, a liquid supply portion having a liquid supply port mounted to the liquid introduction portion of the printing device and supplying liquid from the liquid storage body to the liquid introduction portion of the printing device, a device, and a plurality of terminals electrically connected to the device. The plurality of terminals include a first terminal and other terminals including a second terminal, and are configured to satisfy the following I, II, III, and IV. I: The device outputs, from the first terminal to the printing device, a first signal including a first low voltage, a second low voltage, and a second signal including a second high voltage higher than the second low voltage. II: The first signal and the second signal are used by the printing apparatus to determine that the first terminal and the other terminal are not short-circuited and that the liquid storage container is attached to the printing apparatus. III: The device outputs the first signal from the first terminal to the printing apparatus, and after outputting the first signal, outputs the second signal from the first terminal to the printing apparatus. IV: When the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are repeated alternately and at a predetermined period is input from the printing apparatus to the second terminal. At a first timing during a period in which the voltage input to the second terminal is the high voltage, as a first expected value, the first low voltage is output from the first terminal to the printing apparatus. After outputting the first low voltage, at a second timing during a period in which the voltage input to the second terminal is the low voltage, as a second expected value, the second high voltage is output from the first terminal to the printing apparatus. After the second high voltage is output, at a third timing during a period in which the voltage input to the second terminal is the high voltage, as a third expected value, the second low voltage is output from the first terminal to the printing apparatus.

[0010] According to a fourth aspect of the present disclosure, a printing system is provided. The printing system includes a printing apparatus, a liquid storage container capable of storing a liquid, a liquid supply unit having a liquid supply port, a device, a plurality of terminals connected to the device, and a substrate provided with the device and the plurality of terminals. The printing apparatus includes a print head, a liquid introduction unit that introduces the liquid into the print head, and a plurality of device-side terminals. The liquid supply port of the liquid storage container supplies the liquid from the liquid storage container to the liquid introduction unit of the printing apparatus. The substrate is attached to the printing apparatus and is configured to contact the plurality of device-side terminals. The plurality of terminals include a first terminal and other terminals including a second terminal, and are configured to satisfy the following I, II, III, and IV. I: The device outputs a first signal including a first low voltage, a second low voltage, and a second signal including a second high voltage higher than the second low voltage, from the first terminal to the printing device. II: The first signal and the second signal are used for the printing device to determine that the first terminal and the other terminal are not short-circuited and that the substrate is mounted on the printing device. III: The device outputs the first signal from the first terminal to the printing device, and after outputting the first signal, outputs the second signal from the first terminal to the printing device. IV: When the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are repeated alternately and at a predetermined period is input from the printing device to the second terminal. At a first timing during a period when the voltage input to the second terminal is the high voltage, the first terminal outputs the first low voltage to the printing device as a first expected value. After outputting the first low voltage, at a second timing during a period when the voltage input to the second terminal is the low voltage, the first terminal outputs the second high voltage to the printing device as a second expected value. After the second high voltage is output, at a third timing during a period when the voltage input to the second terminal is the high voltage, the first terminal outputs the second low voltage to the printing device as a third expected value.

[0011] According to a fifth aspect of the present disclosure, a printing system is provided. This printing system includes a printing device and a liquid storage container mounted on the printing device. The printing device includes a print head, a liquid introduction unit for introducing liquid to the print head, and a plurality of device-side terminals. The liquid storage container includes a liquid storage body capable of storing liquid, a liquid supply unit having a liquid supply port for supplying liquid from the liquid storage body to the liquid introduction unit of the printing device, a device, and a plurality of terminals connected to the device. The plurality of terminals include a first terminal and other terminals including a second terminal, and are configured to satisfy I, II, III, and IV described below. I: The device outputs, from the first terminal to the printing apparatus, a first signal including a first low voltage, a second signal including a second low voltage and a second high voltage higher than the second low voltage. II: The first signal and the second signal are used for the printing apparatus to determine that the first terminal and the other terminal are not short-circuited and that the liquid storage container is attached to the printing apparatus. III: The device outputs the first signal from the first terminal to the printing apparatus, and after outputting the first signal, outputs the second signal from the first terminal to the printing apparatus. IV: When the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are repeated alternately and at a predetermined period is input from the printing apparatus to the second terminal. At a first timing during a period in which the voltage input to the second terminal is the high voltage, the first terminal outputs, as a first expected value, the first low voltage to the printing apparatus. After outputting the first low voltage, at a second timing during a period in which the voltage input to the second terminal is the low voltage, the first terminal outputs, as a second expected value, the second high voltage to the printing apparatus. After the second high voltage is output, at a third timing during a period in which the voltage input to the second terminal is the high voltage, the first terminal outputs, as a third expected value, the second low voltage to the printing apparatus.

[0012] According to a sixth aspect of the present disclosure, there is provided use of a substrate configured to be mounted on a printing apparatus including a print head, a liquid introduction unit that introduces liquid into the print head, a storage unit that is provided with the liquid introduction unit and stores a liquid storage container, and a plurality of device-side terminals provided in the storage unit and configured to contact the plurality of device-side terminals. The use of this substrate includes a base material, a device provided on the base material, and a plurality of terminals electrically connected to the device. The plurality of terminals include a first terminal and other terminals including a second terminal, and are configured to satisfy the following I, II, III, and IV. I: The device outputs, from the first terminal to the printing device, a first signal including a first low voltage, a second signal including a second low voltage and a second high voltage higher than the second low voltage. II: The first signal and the second signal are used by the printing device to determine that the first terminal and the other terminal are not short-circuited and that the substrate is mounted on the printing device. III: The device outputs the first signal from the first terminal to the printing device, and after outputting the first signal, outputs the second signal from the first terminal to the printing device. IV: When the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are repeated alternately and at a predetermined period is input from the printing device to the second terminal. At a first timing during a period in which the voltage input to the second terminal is the high voltage, as a first expected value, the first low voltage is output from the first terminal to the printing device. After outputting the first low voltage, at a second timing during a period in which the voltage input to the second terminal is the low voltage, as a second expected value, the second high voltage is output from the first terminal to the printing device. After outputting the second high voltage, at a third timing during a period in which the voltage input to the second terminal is the high voltage, as a third expected value, the second low voltage is output from the first terminal to the printing device.

[0013] According to a seventh aspect of the present disclosure, there is provided use of a liquid storage container mounted in a storage portion of a printing device including 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. This use of the liquid storage container includes a liquid storage body capable of storing liquid, a liquid supply portion mounted on the liquid introduction portion of the printing device and having a liquid supply port for supplying liquid from the liquid storage body to the liquid introduction portion, a device, and a plurality of terminals electrically connected to the device. The plurality of terminals include a first terminal and other terminals including a second terminal, and are configured to satisfy the following I, II, III, and IV. I: The device outputs, from the first terminal to the printing apparatus, a first signal including a first low voltage, a second low voltage, and a second signal including a second high voltage higher than the second low voltage. II: The first signal and the second signal are used by the printing apparatus to determine that the first terminal and the other terminal are not short-circuited and that the liquid storage container is attached to the printing apparatus. III: The device outputs the first signal from the first terminal to the printing apparatus, and after outputting the first signal, outputs the second signal from the first terminal to the printing apparatus. IV: When the first terminal and the other terminal are not short-circuited, a clock signal in which a low voltage and a high voltage are repeated alternately and at a predetermined period is input from the printing apparatus to the second terminal. At a first timing during a period in which the voltage input to the second terminal is the high voltage, as a first expected value, the first low voltage is output from the first terminal to the printing apparatus. After outputting the first low voltage, at a second timing during a period in which the voltage input to the second terminal is the low voltage, as a second expected value, the second high voltage is output from the first terminal to the printing apparatus. After the second high voltage is output, at a third timing during a period in which the voltage input to the second terminal is the high voltage, as a third expected value, the second low voltage is output from the first terminal to the printing apparatus.

Brief Description of the Drawings

[0014]

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Mode for Carrying Out the Invention

[0015] A. First Embodiment: A1. Hardware Configuration: Referring to FIGS. 1 and 2, an overview of the printing system 1000 will be described. FIG. 1 is a perspective view showing the hardware configuration of the printing system 1000. FIG. 2 is an explanatory view showing the schematic configuration of the printing system 1000. In FIG. 1, X-axis, Y-axis, and Z-axis orthogonal to each other are attached. The directions in which the arrows of the X-axis, Y-axis, and Z-axis point indicate the positive directions along the X-axis, Y-axis, and Z-axis, respectively. The positive directions along the X-axis, Y-axis, and Z-axis are taken as the +X direction, +Y direction, and +Z direction, respectively. The directions opposite to the directions in which the arrows of the X-axis, Y-axis, and Z-axis point are the negative directions along the X-axis, Y-axis, and Z-axis, respectively. The negative directions along the X-axis, Y-axis, and Z-axis are taken as the -X direction, -Y direction, and -Z direction, respectively. Those in the directions along the X-axis, Y-axis, and Z-axis regardless of positive or negative are referred to as the X direction, Y direction, and Z direction, respectively. The same applies to the figures and descriptions shown hereinafter. The X-axis, Y-axis, and Z-axis drawn in other figures correspond to the X-axis, Y-axis, and Z-axis in FIG. 1. In FIG. 1, in the normal use posture of the printing system 1000, the front direction of the printing system 1000 is taken as the +Y direction. The +Z direction is taken as the direction of gravity, and the -Z direction is taken as the anti-gravity direction.

[0016] The printing system 1000 includes 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 container 100 is an ink cartridge. The printing device 20 includes a head driving mechanism, a main scanning feed mechanism, and a sub-scanning feed mechanism.

[0017] The head drive mechanism includes a carriage 30. The carriage 30 includes a housing portion 4 and a print head 5. The housing portion 4 is configured to detachably mount four liquid storage containers 100. In the present disclosure, "the liquid storage container 100 is mounted on the printing apparatus 20" means that the liquid storage container 100 is physically attached to the printing apparatus 20 and the contact portion cp of the terminal 290 described later is electrically connected to the apparatus-side terminal 490 described later. Each of the four liquid storage containers 100 is stored in a predetermined position of the housing portion 4. In the present disclosure, each of the four liquid storage containers 100 stores a liquid of a different color. The liquid is specifically ink and will be hereinafter referred to as ink. When the four liquid storage containers 100 are shown separately, they are denoted as liquid storage containers 100A to 100D. The carriage 30 is configured to be movable to an exchange position where the liquid storage container 100 can be exchanged and a standby position where the liquid storage container 100 cannot be exchanged.

[0018] The print head 5 is provided on the surface of the carriage 30 in the +Z direction. A plurality of nozzles for ejecting ink droplets are provided on the surface of the print head 5 facing the +Z direction. Each nozzle is connected to one of the liquid storage containers 100A to 100D mounted on the housing portion 4 via a flow path in the carriage 30. The housing portion 4 is provided with a liquid introduction portion 6 and a connection mechanism 400 described later. The liquid introduction portion 6 is configured to be detachable from a liquid supply port 104op of the liquid storage container 100 described later. The liquid introduction portion 6 is supplied with ink from the liquid storage container 100 and introduces the ink into the print head 5 via a flow path in the carriage 30. The connection mechanism 400 has a plurality of apparatus-side terminals 490 described later.

[0019] The main scanning feed mechanism includes 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 in parallel with the shaft of the paper feed roller 26 described later and slidably holds the carriage 30. When the carriage motor 32 rotates, the carriage 30 fixed to the drive belt 36 moves in the +X direction and the -X direction along the sliding shaft 34.

[0020] The sub-scanning feed mechanism includes a paper feed motor 22 and a paper feed roller 26. When the paper feed motor 22 rotates, the paper feed roller 26 conveys the printing medium PA in the Y direction.

[0021] 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 in the cable 31, and the main control unit 40 is electrically connected to a sub-control board 500 of the carriage 30 described later via the bus 46.

[0022] The main control unit 40 controls each of the above mechanisms to realize printing processing. The main control unit 40 receives, for example, a user's printing job from a computer 90 via a connector 80 and executes printing based on the content of the received printing job. As the printing medium PA is conveyed in the +Y direction by the paper feed roller 26 and the print head 5 provided on the carriage 30 moves in the +X direction and the -X direction by the drive belt 36, the ink ejected from the print head 5 in the +Z direction lands at an arbitrary location on the printing medium PA, and an image is formed. In the present disclosure, "image" includes characters and symbols. In the present disclosure, the +X direction and the -X direction in which the carriage 30 moves are collectively referred to as the "main scanning direction". The -Y direction and the +Y direction for feeding the printing medium PA are collectively referred to as the "sub-scanning direction".

[0023] The printing device 20 further includes an operation unit 70. The user uses the operation unit 70 to perform various settings of the printing device 20 and check the status of the printing device 20.

[0024] As described above, the printing device 20 includes a print head 5, a liquid introduction unit 6 that introduces liquid into the print head 5, a housing unit 4 in which the liquid introduction unit 6 is provided and that houses the liquid storage container 100, and a plurality of device-side terminals 490. The print head 5 is provided in the printing device 20. The print head 5 is not provided in the liquid storage container 100. A form in which the print head 5 is provided in the liquid storage container 100 is different from the present disclosure in the technical field.

[0025] With reference to FIGS. 3 and 4, the configuration of the liquid storage container 100 will be described. FIG. 3 is a first perspective view showing the configuration of the liquid storage container 100. FIG. 4 is a second perspective view showing the configuration of the liquid storage container 100. The directions of the X-axis, Y-axis, and Z-axis for the liquid storage container 100 are based on the state in which the printing device 20 is arranged on a horizontal plane parallel to the X direction and the Y direction and the liquid storage container 100 is attached to the printing device 20, similar to FIG. 1.

[0026] As shown in FIGS. 3 and 4, the external shape of the liquid storage container 100 is substantially a rectangular parallelepiped shape. As shown in FIG. 3, the liquid storage container 100 includes a liquid storage body 101 that can store ink as a liquid, a liquid supply unit 104 having a liquid supply port 104op, and a substrate 120.

[0027] The liquid container 101 forms the outer shell of the liquid storage 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. An ink chamber 150 for storing ink is partitioned inside the liquid container 101 by these six walls 101wf, 101wr, 101wb, 101wu, 101wsa, and 101wsb. The first wall 101wf is a 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 faces the first wall 101wf. The second wall 101wr is a 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 the first wall 101wf and the second wall 101wr and is substantially orthogonal in this embodiment. The third wall 101wb is a wall on the +Z direction side and constitutes the bottom wall. The fourth wall 101wu intersects the first wall 101wf and the second wall 101wr and is substantially orthogonal in this embodiment. The fourth wall 101wu faces the third wall 101wb. The fourth wall 101wu is a wall on the -Z direction side and constitutes the upper wall. The fifth wall 101wsa intersects the first wall 101wf to the fourth wall 101wu and is substantially orthogonal in this embodiment. The fifth wall 101wsa is a wall on the -X direction side and constitutes the right side wall. The sixth wall 101wsb intersects the first wall 101wf to the fourth wall 101wu and is substantially orthogonal in this embodiment. The sixth wall 101wsb faces the fifth wall 101wsa. The sixth wall 101wsb is a wall on the +X direction side and constitutes the left side wall.

[0028] The liquid supply unit 104 is a cylindrical member protruding from the third wall 101wb. The liquid supply port 104op is located on the tip side 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 part 6 (to be described later) of the carriage 30 when the liquid container 100 is attached to the carriage 30 of the printing apparatus 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 part 6. When the liquid container 100 is attached to the carriage 30, the film 104f is broken by the liquid introduction part 6. The ink stored in the ink chamber 150 is supplied to the print head 5 of the printing apparatus 20 via the liquid introduction part 6. As the ink in the ink chamber 150 is consumed, air is introduced into the ink chamber 150 through an air vent hole (not shown).

[0029] The direction in which the liquid container 100 is attached to the carriage 30 of the printing apparatus 20 is defined as the attachment direction MD. The attachment direction MD is also the direction in which the substrate 120 is attached to the carriage 30 of the printing apparatus 20. In the present embodiment, the attachment direction MD is the +Z direction. Two directions perpendicular to each other are defined as the first direction FD and the second direction SD. The first direction FD is a direction including a component of the attachment direction MD. In the present embodiment, the first direction FD is the Z direction, and the second direction SD is the X direction. The first direction FD is a direction substantially along the front surface 120fa of the substrate 120.

[0030] The first direction FD is also defined as follows. For example, the first direction FD is a direction perpendicular to a virtual plane including the liquid supply port 104op. For example, the first direction FD is the direction in which the device-side terminal 490 of the printing apparatus 20 (to be described later) passes over the terminals (to be described later) when the liquid container 100 or the substrate 120 is attached to the carriage 30. For example, the first direction FD is a direction perpendicular to the direction in which a plurality of device-side terminals 490 of the printing apparatus 20 are arranged. In other embodiments, when the front surface 120fa is inclined with respect to the attachment direction MD, the first direction FD is a direction different from the attachment direction MD. 290 The first direction FD is the direction in which the device-side terminal 490 of the printing apparatus 20 (to be described later) passes over the terminals (to be described later). For example, the first direction FD is a direction perpendicular to the direction in which a plurality of device-side terminals 490 of the printing apparatus 20 are arranged. In other embodiments, when the front surface 120fa is inclined with respect to the attachment direction MD, the first direction FD is a direction different from the attachment direction MD.

[0031] The substrate 120 is used for the liquid storage container 100. In the present embodiment, as shown in FIG. 4, the substrate 120 is provided on the second wall 101wr of the liquid storage body 101. Details of the substrate 120 will be described later.

[0032] Two protrusions Pr1 and Pr2 are formed on the second wall 101wr. These protrusions Pr1 and Pr2 protrude in the -Y direction. The substrate 120 is formed with holes 122 and notches 121 for receiving these protrusions Pr1 and Pr2 respectively. The hole 122 is formed at the center of the end of the substrate 120 on the liquid supply part 104 side, and the notch 121 is formed at the center of the end of the substrate 120 on the side opposite to the liquid supply part 104. When fixing the substrate 120 to the second wall 101wr, the protrusions Pr1 and Pr2 are inserted into the holes 122 and notches 121 respectively. After the substrate 120 is inserted into the second wall 101wr, the tips of these protrusions Pr1 and Pr2 are crushed. Thereby, the substrate 120 is fixed to the second wall 101wr. Note that the means for fixing the substrate 120 to the second wall 101w r is not limited to this.

[0033] In the present embodiment, when the liquid storage container 100 is viewed from a direction perpendicular to the second wall 101wr on which the substrate 120 is provided, the substrate 120 is arranged such that the central axis of the liquid supply port 104op overlaps with a first virtual line C1 described later. A contact part cp described later is not arranged on the central axis of the liquid supply port 104op.

[0034] As shown in FIG. 3, the liquid storage container 100 further includes a liquid detection member 110. The liquid detection member 110 is fixed inside the liquid storage body 101. The liquid detection member 110 is a member used for the printing device 20 to detect the remaining amount of liquid in the liquid storage container 100. The liquid detection member 110 may be, for example, a prism for optically detecting the remaining amount of ink, a piezoelectric element in which a piezoelectric body is sandwiched between two opposing electrodes, or two electrodes for detecting the remaining amount of ink based on the difference in resistance between the electrodes. Note that the liquid detection member 110 may not be provided.

[0035] With reference to FIGS. 5 and 6, the details of the substrate 120 will be described. FIG. 5 is a first diagram showing the configuration of the substrate 120. FIG. 6 is a second diagram showing the configuration of the substrate 120. As shown in FIG. 6, the substrate 120 includes a base material 120bd, a plurality of terminals 290, a device 130, and wiring (not shown). The substrate 120 may include other configurations. The base material 120bd has a front surface 120fa and a back surface 120fb. In the present embodiment, the front surface 120fa and the back surface 120fb are each a flat surface. The base material 120bd may be made of a material that constitutes a rigid substrate, a flexible substrate, or the like. The terminal 290 is formed of a conductor such as gold foil.

[0036] In the present disclosure, "surface" is defined as follows, for example. For example, "surface" is the surface of the base material 120bd that faces the device-side terminal 490, which will be described later, when the liquid storage container 100 or the substrate 120 is mounted on the printing device 20. For example, "surface" is, in addition to the surface of the base material 120bd that faces the device-side terminal 490, which will be described later, when the liquid storage container 100 or the substrate 120 is mounted on the printing device 20, 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, which will be described later. In the present embodiment, "surface" is the front surface 120fa. In other embodiments, unless otherwise noted, "surface" is the front surface 120fa.

[0037] As shown in FIG. 5, the plurality of terminals 290 include a data terminal 210, a clock terminal 220, a power supply terminal 230, a reset terminal 240, and a ground terminal 250. Each of the terminals 210, 220, 230, 240, 250 is connected to the device 130. Each of the terminals 210 to 250 is electrically connected to the device 130 via a wiring pattern layer provided on the front surface 120fa and the back surface 120fb of the base material 120bd or via a through hole provided inside the base material 120bd. The data terminal 210 is used to transmit and receive a data signal SDA between the device 130 and the printing apparatus 20. Here, the “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 storage unit 138 described later, signals controlled by the processing unit 136 described later and not stored in the storage unit 138, and signals controlled by the main control unit 40 and the sub-control unit 50 of the printing apparatus 20 and not stored in the storage unit 138. The clock terminal 220 is used to transmit a clock signal SCK from the printing apparatus 20 to the device 130. The power supply terminal 230 is used to supply a power supply voltage VDD from the printing apparatus 20 to the device 130. The reset terminal 240 is used to transmit a reset signal RST from the printing apparatus 20 to the device 130. The ground terminal 250 is grounded via a device-side terminal 450 of the printing apparatus 20 described later. The voltages supplied to the data terminal 210, the clock terminal 220, the power supply terminal 230, and the reset terminal 240 are voltages that the device 130 can accept. The ranges of the voltages supplied to each of the terminals 210 to 240 are the same, and in the present embodiment, they are approximately 0V to approximately 3.3V. The voltage that the device 130 can accept 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 smaller than the breakdown voltage of the device 130, a voltage at which the device 130 is not damaged, or a voltage at which the device 130 does not malfunction. Here, the check terminal used for the shipment inspection is not included in the terminal 290 of the present disclosure. The check terminal is a terminal that does not contact the device-side terminal 490 of the printing apparatus 20 when the liquid storage container 100 is attached to the printing apparatus 20. The check terminal does not form a contact portion cp described later.

[0038] As shown in FIG. 5, when the liquid storage container 100 is attached to the storage unit 4, each of the terminals 210, 220, 230, 240, and 250 includes a contact portion cp that should contact corresponding device-side terminals 410, 420, 430, 440, and 450 among a plurality of device-side terminals 490 included in the connection mechanism 400 of the printing device 20. The contact portion cp of the data terminal 210 is also referred to as a data contact portion cpd. The contact portion cp of the clock terminal 220 is also referred to as a clock contact portion cpc. The contact portion cp of the power supply terminal 230 is also referred to as a power supply contact portion cpvd. The contact portion cp of the reset terminal 240 is also referred to as a reset contact portion cpr. The contact portion cp of the ground terminal 250 is also referred to as a ground contact portion cpvs. The contact portion cp is a partial area on each of the terminals 210, 220, 230, 240, and 250 that should contact the device-side terminals 410, 420, 430, 440, and 450 when the liquid storage container 100 is attached to the storage unit 4, and is an area that can be recognized even by the liquid storage container 100 alone. On the substrate 120, there are a data contact portion cpd, a clock contact portion cpc, a power supply contact portion cpvd, a reset contact portion cpr, and a ground contact portion cpvs. The connection between the terminal 290 and the device-side terminal 490 of the printing device 20 will be described later. The terminal 290 and the corresponding contact portion cp may be in addition to the above terminals 210 to 250.

[0039] The data terminal 210 is used to detect whether the data terminal 210 is short-circuited with at least one of the clock terminal 220, the power supply terminal 230, and the reset terminal 240. Specifically, the data terminal 210 is used to detect whether the data terminal 210 is in a short-circuit state (to be described later) with at least one of the clock terminal 220, the power supply terminal 230, and the reset terminal 240. The data terminal 210 is used to detect whether the liquid storage container 100 is attached to the printing device 20. Specifically, the data terminal 210 is used to detect whether the liquid storage container 100 is in a mounted completed state (to be described later) or a non-mounted completed state (to be described later).

[0040] Hereinafter, the substrate 120 is viewed in plan view. As shown in FIG. 5, two orthogonal straight lines are defined as a first virtual line C1 and a second virtual line C2. In the present embodiment, the first virtual line C1 is in the first direction FD Stretching line and the second virtual line C2 is in the second direction SD Stretching line . In the present embodiment, two orthogonal straight lines substantially along the surface 120fa of the base material 120bd are defined as the first virtual line C1 and the second virtual line C2.

[0041] Assume that all the contact portions cp of all the terminals 290 provided on the base material 120bd of the substrate 120 are projected onto the second virtual line C2. In the present embodiment, assume that the data contact portion cpd, the clock contact portion cpc, the power supply contact portion cpvd, the reset contact portion cpr, and the ground contact portion cpvs are projected onto the second virtual line C2. Regarding the projection positions of the contact portions cp, let the projection position of the data contact portion cpd be swd, the projection position of the clock contact portion cpc be swc, the projection position of the power supply contact portion cpvd be swvd, the projection position of the reset contact portion cpr be swr, and the projection position of the ground contact portion cpvs be swvs. Each of the projection positions swd, swc, swvd, swr, swvs is an orthographic projection projected perpendicularly from each of the contact portions cpd, cpc, cpvd, cpr, cpvs onto the second virtual line C2. At this time, all the contact portions cp are projected to different positions. The data contact portion cpd, the clock contact portion cpc, the power supply contact portion cpvd, the reset contact portion cpr, and the ground contact portion cpvs are arranged such that the respective virtual lines along the first virtual line C1 passing through each contact portion cp are parallel without overlapping or intersecting each other. Also at this time, the first virtual line C1 passes through the middle MP of the two most separated projection positions among the projection positions of all the contact portions cp. In the present embodiment, among the projection positions swd, swc, swvd, swr of the data contact portion cpd, the clock contact portion cpc, the power supply contact portion cpvd, and the reset contact portion cpr, the first virtual line C1 passes through the middle MP between the projection position of the contact portion arranged at the position most separated from the projection position swvs of the ground contact portion cpvs and the projection position swvs of the ground contact portion cpvs. In the present embodiment, the first virtual line C1 passes through the middle between the projection position swc of the clock contact portion cpc and the projection position swvs of the ground contact portion cpvs.

[0042] With respect to the first virtual line C1, one region of the base material 120bd of the substrate 120 is defined as the first region Rg1, and the other region of the base material 120bd of the substrate 120 is defined as the second region Rg2. In the present embodiment, the first region Rg1 is the region on the -X direction side, which is the negative direction of the second direction SD, with respect to the first virtual line C1, and the second region Rg2 is the region on the +X direction side, which is the positive direction of the second direction SD, with respect to the first virtual line C1. The first region Rg1 is also one region of the substrate 120 sandwiching the first virtual line C1, and the second region Rg2 is also the other region of the substrate 120 sandwiching the first virtual line C1. Among all the contact portions cp, some of the contact portions cpa are arranged in the first region Rg1, and the remaining contact portions cpb are arranged in the second region Rg2. Some of the contact portions cpa arranged in the first region Rg1 include a data contact portion cpd, a clock contact portion cpc, a power supply contact portion cpv, and a reset contact portion cpr. The remaining contact portions cpb arranged in the second region Rg2 include a ground contact portion cpvs. The clock contact portion cpc, the data contact portion cpd, the reset contact portion cpr, and the power supply contact portion cpvd are arranged on one side sandwiching the first virtual line C1, and the ground contact portion cpvs is arranged on the other side. Some of the contact portions cpa and the remaining contact portions cpb are arranged asymmetrically with respect to the first virtual line C1. No contact portion cp is provided on the first virtual line C1.

[0043] The ground contact portion cpvs is arranged at the outermost end in the +X direction, which is the positive direction of the second direction SD, among the plurality of contact portions cp. Among the clock contact portion cpc, the data contact portion cpd, the power supply contact portion cpvd, and the reset contact portion cpr, any one of the contact portions cp is arranged at the outermost end in the -X direction, which is the negative direction of the second direction SD, among the plurality of contact portions cp. Any one of these contact portions cp is located on the outermost side of the second direction SD among the plurality of contact portions cp. The ground contact portion cpvs is located on the other outermost side of the second direction SD among the plurality of contact portions cp. In the first region Rg1, among the contact portions cp excluding the ground contact portion cpvs, the contact portion cp projected to the position farthest from the projected 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 are spaced apart by Wa in the direction along the second virtual line C2. In the present embodiment, the interval 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 the present embodiment, the distance between the clock contact portion cp and the ground contact portion cpvs in the second direction SD is the distance Wa.

[0044] The data contact portion cpd, the clock contact portion cpc, the power supply contact portion cpvd, and the reset contact portion cpr are preferably arranged away from the ground contact portion cpvs. For example, in the first region Rg1, among the contact portions cp excluding the ground contact portion cpvs, the contact portion cp projected to the position closest to the projected 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, the interval in the direction along the second virtual line C2 is Wa / 2 or more. In the present embodiment, in the first region Rg1, among the contact portions cpd, cpvd, cpr, cpvd excluding the ground contact portion cpvs, the reset contact portion cpr located on the positive direction side of the second direction SD and the ground contact portion cpvs provided in the second region Rg2, the interval in the second direction SD is Wa / 2 or more. For example, in the first region Rg1, among the contact portions cp excluding the ground contact portion cpvs, between the contact portion cp projected to the position closest to the projected 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, there is no other contact portion cp connected to the device 130 via the terminal 290. In the present embodiment, in the region between the reset contact portion cpr provided at the outermost end on the +X direction side which is the positive direction of the second direction SD in the first region Rg1 and the ground contact portion cpvs provided in the second region Rg2, there is no other contact portion cp connected to the device 130 via the terminal 290. For example, other contact portions cpd, cpc, cpvd, cpr and the ground contact portion cpvs arranged on the substrate 120 are not provided on the first virtual line C1.

[0045] On the substrate 120, at least one contact portion cp among the clock contact portion cpc, the power supply contact portion cpvd, and the reset contact portion cpr is arranged to be 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 among the clock contact portion cpc, the power supply contact portion cpvd, and the reset contact portion cpr are arranged to be 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 present embodiment, on the substrate 120, the power supply contact portion cpvd and the reset contact portion cpr are arranged to be projected between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs.

[0046] On the substrate 120, the data contact portion cpd is arranged to be projected between the projection positions of any two contact portions cp among the power supply contact portion cpvd, the reset contact portion cpr, and the clock contact portion cpc. The data contact portion cpd does not become the contact portion projected at the outermost end on the second virtual line C2. In the present embodiment, the data contact portion cpd is arranged to be projected between the clock contact portion cpc and the projection position of the power supply contact portion cpvd.

[0047] On the substrate 120, either one or both of the data contact portion cpd and the reset contact portion cpr are arranged to be projected between the projection position swvd of the power supply contact portion cpvd and the projection position swc of the clock contact portion cpc. Also, the reset contact portion cpr is arranged such that its projection position swr is adjacent to the projection position swvd of the power supply contact portion cpvd. In the present embodiment, on the substrate 120, the data contact portion cpd is arranged to be 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 to be adjacent" does not necessarily mean that one contact portion and another contact portion are closest to each other. As long as the gist of the present disclosure is not deviated from, other configurations may be arranged between one contact portion and another contact portion.

[0048] On the substrate 120, the power supply contact portion cpvd is arranged such that its projection position swvd is adjacent to the projection position swd of the data contact portion cpd.

[0049] In the present embodiment, on the substrate 120, the clock contact portion cpc is arranged so as to be projected at a position farthest from the projection position swvs of the ground contact portion cpvs. Further, the data contact portion cpd, the power supply contact portion cpvd, and the reset contact portion cpr are arranged so as to be projected in order in the direction from the projection position swc of the clock contact portion cpc to the projection position swvs of the ground contact portion cpvs along the second virtual line C2. The clock contact portion cpc is located at the outermost end in the -X direction, which is the negative direction of the second direction SD. The contact portions cp other than the clock contact portion cpc are arranged in the order of the data contact portion cpd, the power supply contact portion cpvd, and the reset contact portion cpr in the direction from the -X direction, which is the negative direction of the second direction SD, to the +X direction, which is the positive direction. The plurality of contact portions cp are arranged such that their respective projection positions are in the order of the clock contact portion cpc, the data contact portion cpd, the power supply contact portion cpvd, the reset contact portion cpr, and the ground contact portion cpvs in the direction from the -X direction to the +X direction.

[0050] The clock contact portion cpc, the data contact portion cpd, the power supply contact portion cpvd, the reset contact portion cpr, and the ground contact portion cpvs are arranged to form a plurality of columns. The plurality of columns are parallel to the second virtual line C2 and perpendicular to the first virtual line C1. In the present embodiment, the plurality of contact portions cp are arranged to form two columns perpendicular to the first direction FD, and the directions of the two columns are parallel to the second direction SD. The direction in which the two columns are arranged side by side is the direction along the first virtual line C1, and in the present embodiment, it is the direction 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 the reset contact portion cpr forming the second column R2, and the clock contact portion cpc, the power supply contact portion cpvd, and the ground contact portion cpvs forming the first column R1 are arranged alternately so that the contact portions cp of each other are not arranged in the direction of the first virtual line C1, constituting a so-called staggered arrangement. When projected onto the second virtual line C2, the two contact portions cp on the base material 120bd that are projected adjacent to each other 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, any one of the contact portions cp of the clock contact portion cpc, the power supply contact portion cpvd, and the reset contact portion cpr is arranged to be projected. In the present 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 arranged to be projected. Note that in the present embodiment, the contact portions cp of each of the terminals 210 to 250 are arranged to form the first column R1 and the second column R2, but the present invention is not limited thereto. For example, the contact portions cp of each of the terminals 210 to 250 may be arranged to form three columns or four columns. A column may also be formed by one contact portion cp.

[0051] Let the distance between the ground contact portion cpvs and the reset contact portion cpr be the distance Dan. Let the distance between the data contact portion cpd and the clock contact portion cpc be the distance Dbn. Let the distance between the data contact portion cpd and the ground contact portion cpvs be the distance Dcn. Let the distance between the data contact portion cpd and the reset contact portion cpr be the distance Ddn. Let the distance between the data contact portion cpd and the power supply contact portion cpvd be the distance Den. In this case, the distance Dcn is longer than the distance Dbn. The distance Dcn is longer than the distance Den. The distance Dcn is longer than the distance Ddn. In the present embodiment, the distance Dbn and the distance Den are the same. The distance between the data contact portion cpd and the contact portion cp of the plurality of contact portions cp excluding the ground contact portion cpvs that is farthest from the data contact portion cpd is the distance Dbn and the distance Den. In this case, the distance Dan is longer than the distance Dbn and the distance Den.

[0052] The clock contact portion cpc, the reset contact portion cpr, and the power supply contact portion cpvd are arranged adjacent to the data contact portion cpd so as to surround the data contact portion cpd between the data contact portion cpd and the ground contact portion cpvs. By arranging the data contact portion cpd inside the virtual circle Vcr passing through the clock contact portion cpc, the reset contact portion cpr, and the power supply contact portion cpvd, the clock contact portion cpc, the reset contact portion cpr, and the power supply contact portion cpvd surround the data contact portion cpd.

[0053] Let the virtual line segment connecting the clock contact portion cpc and the data contact portion cpd be the first line segment FL, the virtual line segment connecting the reset contact portion cpr and the data contact portion cpd be the second line segment SL, and the virtual line segment connecting the power supply contact portion cpvd and the data contact portion cpd be the third line segment TL. There is no contact portion cp of another terminal 290 different from the clock contact portion cpc and the data contact portion cpd on the first line segment FL. There is no contact portion cp of another terminal 290 different from the reset contact portion cpr and the data contact portion cpd on the second line segment SL. There is no contact portion cp of a terminal 290 different from the power supply contact portion cpvd and the data contact portion cpd on the third line segment TL.

[0054] In this embodiment, the five terminals 210 to 250 also have the same positional relationship as the above-described respective contact portions cpd, cpc, cpvd, cpr, and cpvs. That is, in the first region Rg1, the data terminal 210, the clock terminal 220, the reset terminal 240, and the power supply terminal 230 are arranged. In the second region Rg2, the ground terminal 250 is arranged. On the first line segment FL, no other terminal 290 different from the clock terminal 220 and the data terminal 210 is arranged. On the second line segment SL, no other terminal 290 different from the reset terminal 240 and the data terminal 210 is arranged. On the third line segment TL, no terminal 290 different from the power supply terminal 230 and the data terminal 210 is arranged.

[0055] 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, the reset terminal 240, and the power supply terminal 250, and whether the liquid storage container 100 is attached to the printing apparatus 20. At least a part of the arrangement of the contact portion cp in the present disclosure is determined to enable such detection.

[0056] As shown in FIG. 6, the device 130 is configured to be provided on the base material 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 a resin 139. Note that the device 130 may be mounted on the base material 120bd by another method.

[0057] The processing unit 136 is constituted by, for example, a circuit. The processing unit 136 is connected to the terminals 210 to 250 and controls signals and voltages input to and output from the terminals 210 to 250. The processing unit 136 may be a circuit having a high-level arithmetic processing function such as a CPU. Details of the processing unit 136 will be described later.

[0058] The storage unit 138 is constituted by a non-volatile memory such as a flash memory, for example. The storage unit 138 stores information regarding the liquid storage container 100. The information regarding the liquid storage container 100 is, for example, the ink consumption amount, the ink color, the manufacturing date of the liquid storage container 100, the identification information of the liquid storage container 100, and the like. In the present embodiment, "1" to "4" are respectively assigned as identification information to the liquid storage containers 100A to 100D.

[0059] With reference to FIGS. 7A to 7C, the configuration of the carriage 30 and the state in which the liquid storage container 100 is attached to the carriage 30 will be described. FIG. 7A is a diagram showing a state in which the liquid storage container 100 is attached to the carriage 30. FIG. 7B is a first diagram showing the connection mechanism 400. FIG. 7C is a second diagram showing the connection mechanism 400.

[0060] The carriage 30 includes a storage section 4 and a print head 5. The storage section 4 is disposed above the print head 5 and is configured to removably hold a plurality of liquid storage containers 100. Inside the storage section 4, a mounting chamber 65 for mounting the liquid storage containers 100 is formed. In the present embodiment, four mounting chambers 65 are provided corresponding to the number of the 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 to form dots on the print medium PA. The storage 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 disposed above the print head 5 in the normal use posture of the printing system 1000 and introduces ink from the liquid supply port 104op of the liquid storage container 100 to the print head 5. In the present embodiment, four liquid introduction sections 6 are provided corresponding to the number of the liquid storage containers 100A to 100D. A plurality of sub-control board terminals 510, 520, 530, 540, 550 and a sub-control section 50 are mounted on the sub-control board 500. When the plurality of sub-control board terminals 510, 520, 530, 540, 550 are used without distinction, the reference numeral 590 is used. The plurality of sub-control board terminals 590 are provided for each mounting chamber 65. The plurality of sub-control board terminals 590 are electrically connected to the sub-control section 50 via the wiring of the sub-control board 500. The sub-control section 50 is configured as, for example, a carriage circuit and cooperates with the main control section 40 shown in FIG. 2 to perform control related to the liquid storage container 100.

[0061] The liquid storage container 100 is mounted on the printing apparatus 20 by being inserted in the mounting direction MD. Containing part The liquid storage 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 storage container 100 is detachably mounted on the printing apparatus 20. When the liquid storage container 100 is mounted on the storage section 4, the device 130 is electrically connected to the main control section 40 via the terminal 290, the connection mechanism 400, the sub-control board 500, and the bus 46 shown in FIG. 2.

[0062] As shown in FIGS. 7B and 7C, the connection mechanism 400 includes a terminal holding portion 405 and a plurality of contact portion forming members 403 held by the terminal holding portion 405. The connection mechanism 400 is provided for each of the liquid storage containers 100A to 100D, that is, for each mounting chamber 65. As shown in FIG. 7B, the terminal holding portion 405 has a plurality of slits 301. The contact portion forming member 403 has conductivity and elasticity. The contact portion forming member 403 is fitted into the slit 301. In the present embodiment, for each connection mechanism 400, five contact portion forming members 403 are provided, which is the same number as the number of terminals 290. As shown in FIG. 7B, when the five contact portion forming members 403 are used separately, the symbols "403A", "403B", "403C", "404D", and "404E" are used. In the present embodiment, although nine slits 301 of the connection mechanism 400 are provided and arranged at regular intervals, the number may be made to match the number of contact portion forming members 403.

[0063] As shown in FIG. 7C, the contact portion forming member 403 is , end a member that electrically connects the terminal 290 and the sub-control board terminal 590 of the sub-control board 500. Among the contact portion forming members 403, the portion facing the mounting chamber 65 side forms the device-side terminal 490. The device-side terminal 490 includes the contact portion dcp of the device-side terminal 490 that should contact the terminal 290. In the present embodiment, the device-side terminal 490 is such that the portion of the contact portion forming member 403 that faces the mounting chamber 65 side the most, that is, the portion that protrudes the most toward the mounting chamber 65 side, contacts the terminal 290 and forms the contact portion dcp of the device-side terminal 490. The contact portion dcp of the device-side terminal 490 is not limited to the present 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 side. Among the contact portion forming members 403, the portion protruding toward the sub-control board 500 side forms the relay terminal 439 that contacts the sub-control board terminal 590.

[0064] When the device-side terminals 490 are used separately, the symbols "410", "420", "430", "440", "450" are used. When the relay terminals 439 are used separately, the symbols "431", "432", "433", "434", "435" are used. The device-side terminal 410 and the relay terminal 431 are formed on the contact portion forming member 403A. The device-side terminal 420 and the relay terminal 432 are formed on the contact portion forming member 403B. The device-side terminal 430 and the relay terminal 433 are formed on the contact portion forming member 403C. The device-side terminal 440 and the relay terminal 434 are formed on the contact portion forming member 403D. The device-side terminal 450 and the relay terminal 435 are formed on the contact portion forming member 403E. The device-side terminal 410 is also called the device-side data terminal, the device-side terminal 420 is also called the device-side clock terminal, the device-side terminal 430 is also called the device-side power supply terminal, the device-side terminal 440 is also called the device-side reset terminal, and the device-side terminal 450 is also called the device-side ground terminal.

[0065] The contact portion 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. The contact portion 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. The contact portion forming member 403C electrically connects the power supply terminal 230 and the sub-control board terminal 530. The device-side terminal 430 contacts the power supply terminal 230, and the relay terminal 433 contacts the sub-control board terminal 530. The contact portion 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 portion 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.

[0066] When the liquid storage container 100 is mounted on the storage unit 4, the terminals 210, 220, 230, 240, and 250 are electrically connected by contacting the device-side terminals 410, 420, 430, 440, and 450. The device-side terminals 410, 420, 430, 440, and 450 of the connection mechanism 400 are electrically connected by contacting 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 of the terminals 210, 220, 230, 240, and 250 is electrically connected to the sub-control unit 50.

[0067] In addition, the positional relationship between each contact portion cp in the liquid storage container 100 and the positional relationship between each contact portion cp and other elements, for example, the first virtual line C1, also apply to the contact portions dcp of the device-side terminals 410 to 450. The arrangement of each contact portion cp in the liquid storage container 100 and the arrangement of the contact portion dcp of the device-side terminal 490 are in a mirror image relationship. As shown in FIG. 7B, the contact portion dcp of the device-side data terminal 410 is also referred to as the device-side data contact portion dcpd. The contact portion dcp of the device-side clock terminal 420 is also referred to as the device-side clock contact portion dcpc. The contact portion dcp of the device-side power supply terminal 430 is also referred to as the device-side power supply contact portion dcpvd. The contact portion dcp of the device-side reset terminal 440 is also referred to as the device-side reset contact portion dcpr. The contact portion dcp of the device-side ground terminal 450 is also referred to as the device-side ground contact portion dcpvs.

[0068] As shown in FIG. 7B, the connection mechanism 400 is viewed in a plan view. Two orthogonal lines are defined as the first virtual line C1 and the second virtual line C2. In FIG. 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 the present embodiment, two orthogonal lines substantially along the surface of the terminal holding portion 405 are defined as the first virtual line C1 and the second virtual line C2.

[0069] Suppose that the contact portions dcp of all the device-side terminals of the connection mechanism 400 are projected onto the second virtual line C2. In the present embodiment, it is assumed that the device-side data contact portion dcpd corresponding to the data terminal 210, the device-side clock contact portion dcpc corresponding to the clock terminal 220, the device-side power supply contact portion dcpvd corresponding to the power supply terminal 230, the device-side reset contact portion dcpr corresponding to the reset terminal 240, and the device-side ground contact portion dcpvs corresponding to the ground terminal 250 are projected onto the second virtual line C2. Regarding the projection positions of the contact portions dcp of the device-side terminals, let the projection position of the device-side data contact portion dcpd be swd, the projection position of the device-side clock contact portion dcpc be swc, the projection position of the device-side power supply contact portion dcpvd be swvd, the projection position of the device-side reset contact portion dcpr be swr, and the projection position of the device-side ground contact portion dcpvs be swvs. Each of the projection positions swd, swc, swvd, swr, and swvs is an orthographic projection obtained by projecting perpendicularly from the contact portion dcp of each device-side terminal onto the second virtual line C2. At this time, the contact portions dcp of all the device-side terminals are projected onto different positions. The device-side data contact portion dcpd, the device-side clock contact portion dcpc, the device-side power supply contact portion dcpvd, the device-side reset contact portion dcpr, and the device-side ground contact portion dcpvs are projected onto different positions. The device-side data contact portion dcpd, the device-side clock contact portion dcpc, the device-side power supply contact portion dcpvd, the device-side reset contact portion dcpr, and the device-side ground contact portion dcpvs are arranged such that the 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 at this time, the first virtual line C1 passes through the midpoint MP between the two most distant projection positions among the projection positions of the contact portions dcp of all the device-side terminals. In the present embodiment, among the projection positions swd, swc, swvd, and swr of the device-side data contact portion dcpd, the device-side clock contact portion dcpc, the device-side power supply contact portion dcpvd, and the device-side reset contact portion dcpr, the first virtual line C1 passes through the midpoint MP between the projection position of the contact portion arranged at the position farthest from the projection position swvs of the device-side ground contact portion dcpvs and the projection position swvs of the device-side ground contact portion dcpvs.In the present embodiment, the first virtual line C1 passes through the middle of the projection position swc of the device-side clock contact portion dcpc and the projection position swvs of the device-side ground contact portion dcpvs.

[0070] For the first virtual line C1, one region of the connection mechanism 400 is defined as the first region Rg1, and the other region of the connection mechanism 400 is defined as the second region Rg2. In this case, the device-side terminals 410, 420, 430, and 440 are arranged in the first region Rg1, and the device-side terminal 450 is arranged in the second region Rg2. In the present embodiment, the first region Rg1 is a region on the -X direction side, which is the negative direction of the second direction SD, with respect to the first virtual line C1, and the second region Rg2 is a region on the +X direction side, which is the positive direction of the second direction SD, with respect to the first virtual line C1 C1. The first region Rg1 is also one region of the connection mechanism 400 sandwiching the first virtual line C1, and the second region Rg2 is also the other region of the connection mechanism 400 sandwiching the first virtual line C1. Among the contact portions dcp of all the device-side terminals, some of the contact portions dcpa are arranged in the first region Rg1, and the remaining contact portions dcpb are arranged in the second region Rg2. Some of the contact portions dcpa arranged in the first region Rg1 include the device-side data contact portion dcpd, the device-side clock contact portion dcpc, the device-side power supply contact portion dcpv, and the device-side reset contact portion dcpr. The remaining contact portions dcpb arranged in the second region Rg2 include the device-side ground contact portion dcpvs. On one side sandwiching the first virtual line C1, the device-side clock contact portion dcpc, the device-side data contact portion dcpd, the device-side reset contact portion dcpr, and the device-side power supply contact portion dcpvd are arranged, and on the other side, the device-side ground contact portion dcpvs is arranged. Some of the contact portions dcpa and the remaining contact portions dcpb are arranged asymmetrically with respect to the first virtual line C1. No contact portion dcp of the device-side terminal is provided on the first virtual line C1.

[0071] As shown in FIG. 7B, the device-side ground contact portion dcpvs is arranged at the outermost end in the +X direction, which is the positive direction of the second direction SD, among the contact portions dcp of the plurality of device-side terminals. Among the device-side clock contact portion dcpc, the device-side data contact portion dcpd, the device-side power supply contact portion dcpvd, and the device-side reset contact portion dcpr, the contact portion dcp of any one of the device-side terminals is arranged at the outermost end in the -X direction, which is the negative direction of the second direction SD, among the contact portions dcp of the plurality of device-side terminals. The contact portion dcp of any one of these device-side terminals is located on one of the outermost sides of the second direction SD among the contact portions dcp of the plurality of device-side terminals. The device-side ground contact portion dcpvs is located on the other outermost side of the second direction SD among the contact portions dcp of the plurality of device-side terminals. In the first region Rg1, among the contact portions dcp of the device-side terminals excluding the device-side ground contact portion dcpvs, the contact portion dcp projected at the position farthest from the projection position swvs when projected onto the second virtual line C2, and the device-side ground contact portion dcpvs provided in the second region Rg2 are spaced apart by Wa in the direction along the second virtual line C2.

[0072] The device-side data contact part dcpd, the device-side clock contact part dcpc, the device-side power supply contact part dcpd, and the device-side reset contact part dcpr are preferably arranged away from the device-side ground terminal contact part dcpvs. For example, in the first region Rg1, among the contact parts dcp of the device-side terminal 490 excluding the device-side ground contact part dcpvs, the contact part dcp projected at the position closest to the projection position swvs when projected onto the second virtual line C2, and the second virtual line C2 between the device-side ground contact part dcpvs provided in the second region Rg2. The interval in the direction along C2 is Wa / 2 or more. For example, in the first region Rg1, among the contact parts dcp of the device-side terminals excluding the device-side ground contact part dcpvs, the contact part dcp of the device-side terminal projected at 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. There is no contact part dcp of other device-side terminals between them. In this embodiment, in the region between the device-side reset contact part dcpr provided at the outermost 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, there is no contact part dcp of other device-side terminals. For example, the contact parts dcp of the device-side terminals 410 to 440 and the device-side ground contact part dcpvs are not provided on the first virtual line C1.

[0073] Between the projection position swd of the device-side data contact part dcpd and the projection position swvs of the device-side ground contact part dcpvs, at least one contact part dcp of the device-side terminals among the device-side clock contact part dcpc, the device-side power supply contact part dcpvd, and the device-side reset contact part dcpr is arranged to be projected. Preferably, between the projection position swd of the device-side data contact part dcpd and the projection position swvs of the device-side ground contact part dcpvs, the contact parts dcp of any two or more device-side terminals among the device-side clock contact part dcpc, the device-side power supply contact part dcpvd, and the device-side reset contact part dcpr are arranged to be projected.

[0074] The device-side data terminal dcpd is arranged so as to be projected between the projection positions of the contact parts dcp of any two device-side terminals among the device-side clock contact part dcpc, the device-side power supply contact part dcpvd, and the device-side reset contact part dcpr. The device-side data contact part dcpd does not become the contact part that is projected at the outermost end on the second virtual line C2. In the present embodiment, the device-side data contact part dcpd is arranged so as to be projected between the projection positions of the device-side clock contact part dcpc and the device-side power supply contact part dcpvd.

[0075] Between the projection position swvd of the device-side power supply contact part dcpvd and the projection position swc of the device-side clock contact part dcpc, either one or both of the device-side data contact part dcpd and the device-side reset contact part dcpr are arranged so as to be projected. Also, the device-side reset contact part dcpr is arranged so that its projection position swr is adjacent to the projection position swvd of the device-side power supply contact part dcpvd. In the present embodiment, the device-side data contact part dcpd is arranged so as to be projected between the projection position swvd of the device-side power supply contact part dcpvd and the projection position swc of the device-side clock contact part dcpc.

[0076] The device-side power supply contact part dcpr is arranged so that its projection position swvd is adjacent to the projection position swd of the device-side data contact part dcpd.

[0077] In the present embodiment, the device-side clock contact part dcpc is arranged so as to be projected at a position farthest from the projection position swvs of the device-side ground contact part dcpvs. Also, the device-side data contact part dcpd, the device-side power supply contact part dcpvd, and the device-side reset contact part dcpr are arranged so as to be projected in order in the direction from the projection position swc of the device-side clock contact part dcpc on the second virtual line C2 toward the projection position swvs of the device-side ground contact part dcpvs. The device-side clock contact part dcpc is located at the outermost end in the -X direction, which is the negative direction of the second direction SD. The contact parts dcp of the device-side terminals other than the device-side clock contact part dcpc are in the negative direction of the second direction SD is- From the negative X direction toward the positive X direction, the device-side data contact part dcpd, the device-side power supply contact part dcpvd, and the device-side reset contact part dcpr are arranged in this order. The contact parts dcp of the plurality of device-side terminals are arranged such that the projection positions of each are in the order of the device-side clock contact part dcpc, the device-side data contact part dcpd, the device-side power supply contact part dcpvd, the device-side reset contact part dcpr, and the device-side ground contact part dcpvs from the negative X direction toward the positive X direction.

[0078] The device-side clock contact portion dcpc, the device-side data contact portion dcpd, the device-side power supply contact portion dcpvd, the device-side reset contact portion dcpr, and the device-side ground contact portion dcpvs are arranged to form a plurality of columns. The plurality of columns are parallel to the second virtual line C2 and perpendicular to the first virtual line C1. In this embodiment, the contact portions dcp of the plurality of device-side terminals are arranged to form two columns perpendicular to the first direction FD, and the directions of the two columns are parallel to the second direction SD. The direction in which the two columns are aligned is the direction along the first virtual line C1, and in this embodiment, it is the direction 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 portion dcpc, the device-side power supply contact portion dcpvd, and the device-side ground contact portion dcpvs. The second column R2 is formed by the device-side data contact portion dcpd and the device-side reset contact portion dcpr. The device-side data contact portion dcpd and the device-side reset contact portion dcpr forming the second column R2, and the device-side clock contact portion dcpc, the device-side power supply contact portion dcpvd, and the device-side ground contact portion dcpvs forming the first column R1 are arranged alternately so that their contact portions dcp are not aligned in the direction of the first virtual line C1, constituting a so-called staggered arrangement. When projected onto the second virtual line C2, the contact portions dcp of two adjacent device-side terminals that are projected adjacent to each other form different columns. The device-side data contact portion dcpd and the device-side ground contact portion dcpvs are arranged in different columns. Between the projection position swd of the device-side data contact portion dcpd and the projection position swvs of the device-side ground contact portion dcpvs, the contact portion dcp of any one of the device-side clock contact portion dcpc, the device-side power supply contact portion dcpvd, and the device-side reset contact portion dcpr is arranged to be projected. In this embodiment, between the projection position swd of the device-side data contact portion dcpd and the projection position swvs of the device-side ground contact portion dcpvs, the device-side reset contact portion dcpr and the device-side power supply contact portion dcpvd are arranged to be projected. Note that in this embodiment, the contact portions dcp of each of the device-side terminals 410 to 450 are arranged to form the first column R1 and the second column R2, but it is not limited thereto. For example, the contact portions dcp of each of the device-side terminals 410 to 450 may be arranged to form three columns, four columns, or the like.The column can also be formed by the contact portion dcp of one device-side terminal.

[0079] Let the distance between the device-side ground contact portion dcpvs and the device-side reset contact portion dcpr be the distance DAn. Let the distance between the device-side data contact portion dcpd and the device-side clock contact portion dcpc be the distance DBn. Let the distance between the device-side data contact portion dcpd and the device-side ground contact portion dcpvs be the distance DCn. Let the distance between the device-side data contact portion dcpd and the device-side reset contact portion dcpr be the distance DDn. Let the distance between the device-side data contact portion dcpd and the device-side power supply contact portion dcpvd be DEn. In this case, the distance DCn is longer than the distance DBn. The distance DCn is longer than the distance DEn. The distance DCn is longer than the distance DDn. In this embodiment, the distance DBn and the distance DEn are the same. The distance between the device-side data contact portion dcpd and the contact portion dcp of the device-side terminal that is farthest from the device-side data contact portion dcpd among the contact portions dcp of a plurality of device-side terminals excluding the device-side ground contact portion dcpvs is the distance DBn and the distance DEn. In this case, the distance DAn is longer than the distance DBn and the distance DEn.

[0080] Let the virtual line segment connecting the device-side clock contact portion dcpc and the device-side data contact portion dcpd be the first line segment fL, the virtual line segment connecting the device-side reset contact portion dcpr and the device-side data contact portion dcpd be the second line segment sL, and the virtual line segment connecting the device-side power supply contact portion dcpvd and the device-side data contact portion dcpd be the third line segment tL. There is no contact portion dcp of another device-side terminal different from the device-side clock contact portion dcpc and the device-side data contact portion dcpd on the first line segment fL. There is no contact portion dcp of another device-side terminal different from the device-side reset contact portion dcpr and the device-side data contact portion dcpd on the second line segment sL. There is no contact portion dcp of a device-side terminal different from the device-side power supply contact portion dcpvd and the device-side data contact portion dcpd on the third line segment tL.

[0081] The data terminal 210 can also be called the first terminal. The clock terminal 220 can also be called the second terminal included in the other terminals. The reset terminal 240 can also be called the third terminal included in the other terminals. The power supply terminal 230 can also be called the fourth terminal included in the other terminals. The ground terminal 250 can also be called the fifth terminal included in the other terminals. The data contact portion cpd can also be called the first contact portion. The clock contact portion cpc can also be called the second contact portion. The reset contact portion cpr can also be called the third contact portion. The power supply contact portion cpvd can also be called the fourth contact portion. The ground contact portion cpvs can also be called the fifth contact portion. Also, the terminals other than the first terminal can also be called the other terminal group. The terminals such as 210 to 250 provided on the substrate 120 and the liquid storage container 100 can also be called the substrate-side terminals or the container-side terminals.

[0082] 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 projection position of the first device-side terminal 410 can be called the first projection position. The projection position of the second device-side terminal 420 can be called the second projection position. The projection position of the third device-side terminal 430 can be called the third projection position. The projection position of the fourth device-side terminal 440 can be called the fourth projection position. The projection position of the fifth device-side terminal 450 can be called the fifth projection position.

[0083] A2. Explanation of various states of the printing system: In the present disclosure, the "fully mounted state" refers to a state in which the liquid storage container 100 is mounted on the printing apparatus 20 and no short circuit has occurred between the terminals 290. As described above, in the present disclosure, "the liquid storage container 100 is mounted on the printing apparatus 20" means that the liquid storage container 100 is physically attached to the printing apparatus 20 and the contact portion cp of the terminal 290 is electrically connected to the apparatus-side terminal 490. The fully mounted state is a state in which communication can be established between the printing apparatus 20 and the device 130. The "not fully mounted state" refers to a state in which the liquid storage container 100 is not mounted in the storage portion 4 of the printing apparatus 20, or a state in which the liquid storage container 100 is attached to the storage portion 4 of the printing apparatus 20 but a contact failure has occurred between the apparatus-side terminal 490 and the contact portion cp. The "short circuit state" refers to a state in which the liquid storage container 100 is mounted in the storage portion 4 of the printing apparatus 20 but a short circuit has occurred between the terminals 290. For example, when the data terminal 210 and the clock terminal 220 are short-circuited, it is said that "the data terminal 210 and the clock terminal 220 are in a short circuit state".

[0084] The "connected state" is any one of (i) the fully mounted state, (ii) the not fully mounted state, and (iii) the short circuit state. The "determination of the connected state" means determining which of the above (i) to (iii) states the liquid storage container 100 is in.

[0085] A3. Electrical configuration and software configuration: A3-1. Electrical configuration: FIG. 8 is a diagram schematically showing the electrical configuration of the printing system 1000. In FIG. 8, when distinguishing the substrates 120 and devices 130 respectively included in the four liquid storage containers 100A, 100B, 100C, and 100D, "A", "B", "C", and "D" are attached to the end. Identification information of the liquid storage containers 100A to 100D is stored in each of the devices 130A to 130D. For example, information regarding the liquid stored in the liquid storage containers 100A to 100D is stored in each of the devices 130A to 130D. The identification information is represented as ID = 1 to 4 in FIG. 8. The main control unit 40 and the sub-control unit 50 constitute a control unit 39 that controls the operation of the printing device 20.

[0086] The sub-control unit 50 and the liquid storage containers 100A to 100D are electrically connected by a plurality of lines. The plurality of lines includes a reset line LRST, a clock line LSCK, a power supply line LVDD, a data line LSDA, and a ground line LVSS. The reset line LRST, the clock line LSCK, the power supply line LVDD, and the data line LSDA are provided independently for each of the liquid storage containers 100A to 100D. The ground line LVSS is provided in common for the liquid storage containers 100A to 100D. When distinguishing the lines electrically connected to the corresponding liquid storage containers 100A to 100D for the reset line LRST, the clock line LSCK, the power supply line LVDD, and the data line LSDA, "1" to "4" are attached to the end. This "1" to "4" corresponds to the identification information "1" to "4" of the liquid storage containers 100A to 100D.

[0087] In the sub-control unit 50, the terminal that outputs the reset signal RST is defined as the host terminal HRST, the terminal that outputs the clock signal SCK is defined as the host terminal HSCK, the terminal that outputs the power supply voltage VDD is defined as the host terminal HVDD, and the terminal that outputs and inputs the data signal SDA is defined as the host terminal HSDA. The host terminal HVSS is grounded. When distinguishing the terminals connected to the corresponding liquid storage containers 100A to 100D for the host terminals HSDA, HRST, HSCK, HVDD, "1" to "4" are appended to the end. This "1" to "4" corresponds to the identification information "1" to "4" of the liquid storage containers 100A to 100D. The sub-control unit 50 and the main control unit 40 are electrically connected via the bus 46. The sub-control unit 50 individually transmits various signals and voltages to the devices 130A to 130D of the liquid storage containers 100A to 100D via the connection bus 45 including the lines LRST, LSCK, LVDD, LSDA, LVSS.

[0088] The reset line LRST is a conductive line used for the control unit 39 to send a reset signal RST to the device 130. The reset signal RST is a signal that enables the reception of a request signal RS, which will be described later. When the reset signal RST sent from the control unit 39 to the device 130 changes from high level to low level, the part of the processing unit 136 that receives the request signal RS returns to its initial state. When the reset signal RST changes from low level to high level, a new request signal RS can be received. The clock line LSCK is a conductive line used for the control unit 39 to send a clock signal SCK to the device 130. The clock signal SCK is a signal in which the low level and the high level alternate and repeat at a predetermined period. The data line LSDA is a conductive line used for transmitting and receiving a data signal SDA between the control unit 39 and the device 130. The data signal SDA is transmitted 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 transmitted and received triggered by the rising or falling edge of the clock signal SCK. The reset signal RST, the data signal SDA, and the clock signal SCK take either a high level or a low level. Hereinafter, the high level is also represented by the symbols "H" or "1", and the low level is also represented by the symbols "L" or "0". Note that the host terminal HSDA connected to the data line LSDA is grounded via a pull-down resistor within the sub-control unit 50. Thereby, when the data signal SDA is not being transmitted or received between the sub-control unit 50 and the device 130, the driving state of the host terminal HSDA of the sub-control unit 50 is held at the low level.

[0089] The ground wire LVSS is a conductive wire that defines the ground potential VSS of the device 130. The ground potential VSS is set to, for example, 0V. The power supply wire LVDD is a conductive wire used for the control unit 39 to supply the device 130 with the power supply voltage VDD that serves as the operating voltage. The power supply voltage VDD is a voltage higher than a predetermined threshold value. In this embodiment, for the power supply voltage VDD, a potential of about 3.3V is used with respect to the ground potential VSS. Note that the potential used for the power supply voltage VDD may be a different value depending on the type of the device 130.

[0090] FIG. 9 is a diagram showing the functional configuration of the printing apparatus 20 together with one liquid storage container 100. The printing apparatus 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 state of the printing apparatus 20, errors in the liquid storage containers 100A to 100D, the ink consumption stored in the device 130, the color of the ink, the manufacturing date, and the like. When the liquid storage container 100 is in the completely mounted state, the display panel 495 displays, for example, a message indicating that the liquid storage container 100 has been mounted, a message indicating that the printing system 1000 is in a printable state, and a display of the remaining amount of ink stored in the liquid storage container 100. The display panel 495 is provided, for example, on the operation unit 70 in FIG. 2. The power supply 441 is a normal power supply used for the logic circuit and has a rated voltage of 3.3V. The voltage of the power supply 441 is supplied to the sub-control unit 50 and, if necessary, to other circuits as well.

[0091] The main control unit 40 includes a CPU 415 and a device-side first storage unit 416. By executing various programs stored in the device-side first storage unit 416, the CPU 415 controls the operation of the printing device 20. For example, the main control unit 40 controls the operation of the display panel 495 and the operation of the sub-control unit 50. By executing various programs stored in the device-side first storage unit 416, the CPU 415 functions as a determination unit 411. The determination unit 411 includes a mounting determination unit 412 and a short-circuit determination unit 414. The mounting determination unit 412 determines whether the liquid storage container 100 is mounted. The short-circuit determination unit 414 determines whether a short circuit has occurred between the terminals 290. The sub-control unit 50 includes a switching unit 511 and a device-side second storage unit 516. The switching unit 511 includes 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. As a result, the CPU 415 and the substrate 120 are switched to a connected state. When the CPU 415 writes "0" to the register, the analog switch becomes non-conductive. As a result, the CPU 415 and the substrate 120 are switched to a non-connected state.

[0092] The device-side second storage unit 516 stores determination information. The determination information is information used in the determination process of the connection state described later. The determination information is information having, as a detection value, the voltage output from the data terminal 210 with respect to the request signal RS described later. When executing the determination process of the connection state, the determination unit 411 reads the determination information from the device-side second storage unit 516.

[0093] The sub-control unit 50 transmits a request signal RS to each of the devices 130A to 130D of the liquid storage 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 storage containers 100A to 100D. The request signal RS includes, for each of the devices 130A to 130D, a command that can identify the liquid storage containers 100A to 100D to be the response targets for the request signal RS. The determination unit 411 performs a determination process of the connection states of the liquid storage containers 100A to 100D using the voltages output from each data terminal 210 of the liquid storage containers 100A to 100D for the request signal RS. Details of the request signal RS will be described later.

[0094] The processing unit 136 of the 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 transmitted and received triggered by the rising edge or falling edge of the clock signal SCK. The processing unit 136 controls the signals and voltages input and output to and from the terminals 210 to 250. For example, in response to the request signal RS, response signals FS and SS are output 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 driving states: a state of outputting a low-level voltage, a state of outputting a high-level voltage, and a high-impedance state. The three-state buffer is connected to the data terminal 210. Thus, in the present disclosure, the terms "low level", "high level", and "high impedance" are used as terms indicating the driving states of the data terminal 210. The storage unit 138 is composed of a memory cell array in which a plurality of 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 each of the terminals 210 to 250 and the storage unit 138.

[0095] A3-2. Outline of software configuration (determination process of connection state): Referring to FIGS. 10A and 10B, the connection state determination process executed by the printing system 1000 will be described. FIG. 10A is a flowchart of the process executed by the printing apparatus 20 in the connection state determination process. FIG. 10B is a flowchart of the process executed by the device 130 in the connection state determination process.

[0096] As shown in FIG. 10A, in the connection state determination process, the printing apparatus 20 executes the following process. In step S301, the sub-control unit 50 transmits a request signal RS to the device 130 of the liquid storage container 100. Thereafter, the sub-control unit 50 detects the voltage output from the data terminal 210 of the liquid storage container 100. Specifically, in step S302, the sub-control unit 50 detects the voltage output from the data terminal 210 of the liquid storage 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 storage 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 storage container 100 at a predetermined third timing t3. The first timing t1 to the third timing t3 are different timings respectively. The voltages detected by the sub-control unit 50 at the first timing t1 to the third timing t3 are stored as detection values 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 detection value from the device-side second storage unit 516. In step S306, the main control unit 40 determines the connection state based on the detection values detected by the sub-control unit 50 at the first timing t1 to the third timing t3.

[0097] As shown in FIG. 10B, in the connection state determination process, the device 130 performs the following process. In step S101, the processing unit 136 of the device 130 determines whether a request signal RS has been input to the data terminal 210 from the printing apparatus 20. If it is determined that the request signal RS has been input to the data terminal 210, then step SIn 102, the processing unit 136 of the device 130 determines whether it is requested to respond to the printing device 20. If it is determined that a response to the printing device 20 is requested, the processing unit 136 of the 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 the 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 it is determined in step S102 that a response to the printing device 20 is not requested, the processing unit 136 of the device 130 ends the process.

[0098] With reference to FIGS. 11A to 11D, the outline and output timing of the request signal RS, the first response signal FS, and the second response signal SS will be described. FIG. 11A is a timing chart when the printing apparatus 20 outputs the request signal RS to the data terminal 210. FIG. 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. FIG. 11C is a diagram showing details of the first response signal FS. FIG. 11D is a diagram showing details of the second response signal SS. The timing chart of FIG. 11B is executed following the timing chart of FIG. 11A. In FIGS. 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 driving state of the terminal 290 is high impedance, indicating that no signal is output from the 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 driving state of the terminal 290 being high impedance and no signal being output from the terminal 290 and a low-level voltage being output from the terminal 290. However, for example, by using a pull-up resistor that connects the data terminal 210 and the power supply terminal 230, it can be confirmed that the driving state of the data terminal 290 is high impedance. VDD, RST, SCK, and SDA1 to SDA4 shown in FIG. 11A, etc., mean signals transmitted and received or voltages supplied via the corresponding terminals 290 by the corresponding lines LVDD, LRST, LSCK, and LSDA1 to LSDA4. Cycles D1 to D9 in the command period CMT, the first response period RT1, and the second response period RT2 represent unit periods in which the low level and high level of the clock signal SCK are repeated in each period. The clock signal SCK in this unit period is called a "cycle".

[0099] The timing charts shown in FIGS. 11A and 11B are executed using a predetermined timing as a trigger. The predetermined timing is, for example, the timing when the printing apparatus 20 is activated and the power supply 441 is turned ON, the timing when the liquid storage container 100 is replaced, the timing when an instruction is received from the user, or the timing when the carriage 30 is located at the home position and the printing apparatus 20 is not executing printing. Hereinafter, an example of execution using the timing when the power supply 441 is turned ON as a trigger will be described.

[0100] As shown in FIG. 11A, the control unit 39 first sets the power supply voltage VDD to a high level. After the power supply voltage VDD becomes 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 transmits the clock signal SCK to the device 130. After setting the reset signal RST to a high level, the control unit 39 transmits the request signal RS to the device 130. The request signal RS includes a first execution command BCC1, a first identification data DB1, a first parity data P1, a second execution command BCC2, a second identification data DB2, and a second parity data P2.

[0101] The request signal RS will be described in detail. After setting the reset signal RST to a high level, the control unit 39 transmits the first execution command BCC1 to the devices 130A to 130D in cycles D1 and D2 of the command period CMT. The first execution command BCC1 is 2-bit data and is a command indicating that the main control unit 40 executes a connection state determination process. 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.

[0102] Next to the first execution command BCC1, the control unit 39 transmits the first identification data DB1 to the devices 130A to 130D in cycles D3 to D8. The first identification data DB1 is 6-bit data and identifies the liquid storage containers 100A to 100D that require a response. In the first identification data DB1, corresponding bits are assigned to each of the devices 130A to 130D. Cycle D3, which is the first bit, and cycle D4, which is the second bit, can be used when the printing apparatus 20 mounts six liquid storage containers 100 in other embodiments. In the first identification data DB1, cycle D5, which is the third bit, corresponds to the liquid storage container 100D, cycle D6, which is the fourth bit, corresponds to the liquid storage container 100C, cycle D7, which is the fifth bit, corresponds to the liquid storage container 100B, and cycle D8, which is the sixth bit, corresponds to the liquid storage container 100A. The first identification data DB1 transmitted to the device 130A of the liquid storage container 100A is at a high level in cycle D8, which is the sixth bit, and the remaining bits are at a low level. The first identification data DB1 transmitted to the device 130B of the liquid storage container 100B is at a high level in cycle D7, which is the fifth bit, and the remaining bits are at a low level. The first identification data DB1 transmitted to the device 130C of the liquid storage container 100C is at a high level in cycle D6, which is the fourth bit, and the remaining bits are at a low level. The first identification data DB1 transmitted to the device 130D of the liquid storage container 100D is at a high level in cycle D5, which is the third bit, and the remaining bits are at a low level. The request signal RS has different waveforms for each of the devices 130A to 130D of the liquid storage containers 100A to 100D.

[0103] Next to the first identification data DB1, the control unit 39 transmits the first parity data P1 to the devices 130A to 130D in cycle D9. The first parity data P1 is 1-bit data. In the present embodiment, the first parity data P1 is odd parity.

[0104] Next to the first parity data P1, the control unit 39 transmits 2-bit second execution command BCC2 to devices 130A to 130D. The second execution command BCC2 is the same data that has not inverted the first execution command BCC1. Next to the second execution command BCC2, the control unit 39 transmits 6-bit second identification data DB2 to devices 130A to 130D. The second identification data DB2 is the same data that has not inverted the first identification data DB1. Next to the second identification data DB2, the control unit 39 transmits 1-bit second parity data P2 to devices 130A to 130D.

[0105] The first execution command BCC1, the first identification data DB1, and the first parity data P1 are also collectively called the first command. The second execution command BCC2, the second identification data DB2, and the second parity data P2 are also collectively called the second command. Among the command periods CMT, the period during which the control unit 39 transmits the first command to the device 130 is also called the first command period. Among the command periods CMT, the period during which the control unit 39 transmits the second command to the device 130 is also called the second command period. The first command and the second command are the same data that has not been inverted. In other embodiments, the first command and the second command may be inverted with respect to each other.

[0106] As described above, first, a power supply voltage VDD is input from the printing device 20 to the power supply terminal 230 of the device 130. After the power supply voltage VDD is input from the printing device 20 to the power supply terminal 230 of the device 130, a reset signal RST changes from a low reset voltage to a high reset voltage, and then a high reset voltage is input from the printing device 20 to the reset terminal 240. After the high reset voltage is input from the printing device 20 to the reset terminal 240 of the device 130, a clock signal SCK is input from the printing device 20 to the clock terminal 220. After the high reset voltage is input from the printing device 20 to the reset terminal 240 of the device 130, a request signal RS is input from the printing device 20 to the data terminal 210. Here, the power supply voltage VDD is a voltage as a high level higher than a threshold value. The reset signal RST is a signal including a low reset voltage as a low level and a high reset voltage as a high level higher than the low reset voltage. The low reset voltage is a voltage lower than a reference reset voltage as a threshold value, and the high reset voltage is a voltage higher than the reference reset voltage as a threshold value. The reference reset voltage is a voltage serving as a reference for determining a high level and a low level. The clock signal SCK is a signal in which a low clock voltage as a low level and a high clock voltage as a high level higher than the low clock voltage are repeated alternately and at a predetermined period. The low clock voltage is a voltage lower than a reference clock voltage as a threshold value, and the high clock voltage is a voltage higher than the reference clock voltage as a threshold value. The reference clock voltage is a voltage serving as a reference for determining a high level and a low level. Each threshold value is set, for example, between the potential of the power supply 441 and the ground potential.

[0107] As shown in FIG. 11B, after the request signal RS is transmitted from the control unit 39 to the device 130, the device 130 that 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 FS and the second response signal SSThe request signal RS is a signal used by the printing apparatus 20 to determine that the data terminal 210, the clock terminal 220, the power supply terminal 230, and the reset terminal 240 are not short-circuited and that the liquid storage container 100 is mounted on the printing apparatus 20. The request signal RS has a waveform that individually specifies the liquid storage containers 100A to 100D in the first identification data DB1. When the device 130A to 130D receives the request signal RS specified for itself from the printing apparatus 20, the device 130A to 130D outputs the first response signal FS and the second response signal SS to the data terminal 210. The first response signal FS is output in the first response period RT1. The second response signal SS is output in the second response period RT2, which is the period following the first response period RT1.

[0108] In the first response period RT1, first, in cycles D1 and D2, a signal direction switching process for the printing apparatus 20 to transmit and receive signals via the data line LSDA is executed. After transmitting the request signal RS to the device 130, the control unit 39 discharges the charge of the data line LSDA by setting the potential of the data line LSDA to 0V in cycle D1. Thereafter, in cycle D2, the control unit 39 sets the driving state of the host terminal HSDA of the sub-control unit 50 to high impedance. Thereby, the printing apparatus 20 becomes a state where it can input a signal. On the other hand, after receiving the request signal RS in synchronization with the clock signal SCK, the processing unit 136 of the device 130 sets the driving state of each data terminal 210 to high impedance in cycle D1. This is to prevent a signal from being output from the data terminal 210 while the charge of the data line LSDA is being discharged by the control unit 39 of the printing apparatus 20. Similarly, in cycle D2, the processing unit 136 of the device 130 sets the driving state of the data terminal 210 to high impedance. The first two bits of this first response period RT1 also function as dummy bits for making the number of bits of the request signal RS and the signal in the first response period RT1 the same. The number of cycles of the clock signal SCK constituting the first response period RT1 is the same as the number of cycles of the clock signal SCK with which the request signal RS is synchronized.

[0109] Next, in Cycle D5 ~ Cycle D8, the processing unit 136 of each device 130 outputs the first response signal FS to the data terminal 210 at a predetermined timing. The first response signal FS is output from different processing units 136A to 136D every one cycle of the clock signal SCK. The first response signal FS includes a low-level voltage. As shown in FIG. 11C, the first response signal FS is a signal output to the data terminal 210 during the period when the clock signal SCK is at a high level. The first response signal FS is at a low level during the period when the clock signal SCK is at a high level. When the voltage input to the clock terminal 220 changes from a low level to a high level, the processing unit 136 of the device 130 outputs a low-level voltage to the data terminal 210.

[0110] As described above, the first response signal FS includes a low first response voltage as a low level lower than the reference first response voltage as a threshold value. The reference first response voltage is a voltage serving as a reference for determining a low level and a high level, and is set, for example, between the voltage of the power supply 441 and the voltage of the ground potential.

[0111] As shown in FIG. 11B, the first timing t1 is set during the period when the clock signal SCK is at a high level in each of the cycles D5 ~ Cycle D8 of the first response period RT1. The first timing t1 is set during the period when the first response signal FS is at a low level. As shown in FIG. 11C, in one cycle 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 at a high level.

[0112] As shown in FIG. 11B, Cycle D9 of the first response period RT1 functions as a dummy bit that makes the number of bits of the first command period and the first response period RT1 the same.

[0113] During the second response period RT2, as shown in FIG. 11B, the control unit 39 discharges the charge on the data line LSDA by setting the potential of the data line LSDA to 0V. In cycle D1, the processing unit 136 of the device 130 sets the driving state of the data terminal 210 to high impedance. Also in cycle D2, the processing unit 136 of the device 130 sets the driving state of the data terminal 210 to high impedance. The first two bits of this second response period RT2 also function as dummy bits that make the number of bits of 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 with which the request signal RS synchronizes.

[0114] Next, in cycles D5 ~D8, the processing unit 136 of each device 130 outputs the second response signal SS to the data terminal 210 at a predetermined timing. The second response signal SS is output from different processing units 136A to 136D every one cycle of the clock signal SCK. The second response signal SS includes a low-level voltage and a high-level voltage. As shown in FIG. 11D, the waveform of the second response signal SS is in antiphase with the waveform of the clock signal SCK input to the clock terminal 220. The second response signal SS includes a high level during the period when the clock signal SCK is at a low level and includes a low level during the period when the clock signal SCK is at a high level.

[0115] 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 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 value, and the high second response voltage is a voltage higher than the reference second response voltage as a threshold value. The reference second response voltage is a voltage that serves as a reference for determining a low level and a high level, and is set, for example, between the voltage of the power supply 441 and the voltage of the 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.

[0116] As shown in FIG. 11B, the second timing t2 is set during the period when the clock signal SCK is at the low level in each of cycles D1 to D8 of the second response period RT2. The second timing t2 is set during the period when the second response signal SS is at the high level. The third timing t3 is set during the period when the clock signal SCK is at the high level in each of cycles D1 to D8 of the second response period RT2. The third timing t3 is set during the period when the second response signal SS is at the low level. As shown in FIG. 11D, 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 at the low level in one cycle 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 at the high level in one cycle of the clock signal SCK. D5 ~ In each of cycles D1 to D8 of the second response period RT2, it is set during the period when the clock signal SCK is at the low level. The second timing t2 is set during the period when the second response signal SS is at the high level. The third timing t3 is set during the period when the clock signal SCK is at the high level in each of cycles D1 to D8 of the second response period RT2. D5 ~ In each of cycles D1 to D8 of the second response period RT2, it is set during the period when the clock signal SCK is at the high level. The third timing t3 is set during the period when the second response signal SS is at the low level. As shown in FIG. 11D, 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 at the low level in one cycle 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 at the high level in one cycle of the clock signal SCK.

[0117] As shown in FIG. 11B, cycle D9 of the second response period RT2 functions as dummy bit data that makes the number of bits of the second command period and the second response period RT2 the same.

[0118] For each of the devices 130A to 130D of the liquid storage containers 100A to 100D, the output periods of the first response signal FS and the second response signal SS are different. In the present embodiment, the device 130 outputs the first response signal FS and the second response signal SS in one cycle of the clock signal SCK corresponding to the identification information. As shown in FIG. 11B, the liquid storage 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. The liquid storage 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. The liquid storage 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 storage container 100D outputs the first response signal FS and the second response signal SS to the data terminal 210 in each cycle D5 of the first response period RT1 and the second response period RT2.

[0119] As shown in FIG. 11B, when a clock signal SCK having a predetermined number of cycles is input to the clock terminal 220, the device 130 outputs the 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 FIG. 11B, when the clock signal SCK is input to the clock terminal 220 in cycles D1 to D7 in the first response period RT1, the device 130A outputs the first response signal FS by switching the drive state of the data terminal 210 from high impedance to low level. The device 130 Drive ends 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 FIG. 11B, after the device 130A outputs the first response signal FS in cycle D8 in the first response period RT1, the device 130A ends the output of the first response signal FS by switching the drive state of the data terminal 210 to high impedance.

[0120] As shown in FIG. 11B, when a clock signal SCK having a predetermined number of cycles is input to the clock terminal 220, the device 130 outputs a second response signal SS by switching the driving state of the data terminal 210 from high impedance to high level. For example, as shown in FIG. 11B, when the clock signal SCK is input to the clock terminal 220 in cycles D1 to D7 during the second response period RT2, the device 130A outputs the second response signal SS by switching the driving state of the data terminal 210 from high impedance to high level. The device 130 ends the output of the second response signal SS by switching the driving state of the data terminal 210 from low level to high impedance. For example, as shown in FIG. 11B, after the device 130A outputs the second response signal SS at cycle D8 during the second response period RT2, the output of the second response signal SS is ended by switching the driving state of the data terminal 210 from low level to high impedance.

[0121] As described above, after the request signal RS is input to the data terminal 210, the device 130 outputs the first response signal FS to the data terminal 210, and after outputting the first response signal FS, outputs the 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 supply terminal 230, and the reset terminal 240, the device 130 executes the following. As shown in FIG. 11C, at a predetermined first timing t1 during a period when the voltage input to the clock terminal 220 is a high clock voltage, as a first expected value, the device 130 outputs a low first response voltage to the data terminal 210. As shown in FIG. 11D, after outputting the low first response voltage, at a second timing t2 when the voltage input to the clock terminal 220 is a low clock voltage, as a second expected value, the device 130 outputs a high second response voltage to the data terminal 210. As shown in FIG. 11D, after outputting the high second response voltage, the clock terminal 220At the third timing t3 when the voltage input to [[ID=]] is the high clock voltage, as the third expected value, a low second response voltage is output to the data terminal 210.

[0122] The first response signal FS is configured at a low level. The low level of the first response signal FS indicates that the data terminal 210 and the terminals 220, 230, 240, 250 other than the data terminal 210 are not short-circuited. The second response signal SS is configured at a high level and a low level. The high level of the second response signal SS indicates that the liquid storage container 100 is attached to the printing apparatus 20. The low level of the second response signal SS indicates that the data terminal 210 and the terminals 220, 230, 240, 250 other than the data terminal 210 are not short-circuited.

[0123] A3-3. Details of software configuration (connection state determination process): With reference to FIG. 12, the connection state determination process executed by the main control unit 40 will be described. FIG. 12 is a diagram showing an outline of the connection state determination process executed by the main control unit 40. As shown in FIG. 12, the main control unit 40 determines the connection state using the combination of voltages output from the data terminal 210 of the liquid storage container 100 at the first timing t1 to the third timing t3. The first timing t1 to the third timing t3 are assigned to the periods of cycles D5 to D8 according to the liquid storage containers 100A to 100D as described with reference to FIG. 11B above. The expected value of the voltage output from the data terminal 210 of the liquid storage 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 storage container 100 is in the attached complete state, which is at a low level at the first timing t1, at a high level at the second timing t2, and at a low level at the third timing t3. The determination unit of the main control unit 40 411 In the first case where the voltage output from the data terminal 210 of the liquid storage container 100 is the same as the expected value, determines that the liquid storage container 100 is in the attached complete state and "there is a container".

[0124] When the voltage output from the data terminal 210 of the liquid storage container 100 is at a low level at each of the first timing t1 to the third timing t3, the determination unit of the main control unit 40 411 determines that the liquid storage container 100 is in a non-mounted completed state and "no container".

[0125] When the voltage output from the data terminal 210 of the liquid storage container 100 is at a high level at the first timing t1, at a low level at the second timing t2, and at a high level at the third timing t3, the determination unit of the main control unit 40 411 determines that the data terminal 210 and the clock terminal 220 are in a short-circuit state and "short circuit exists". When the data terminal 210 and the clock terminal 220 are short-circuited, the voltage of the data terminal 210 becomes approximately the same as the voltage of the clock terminal 220. Similar to the clock signal SCK in FIG. 11B, the voltage output from the data terminal 210 of the liquid storage container 100 is at a high level at the first timing t1, at a low level at the second timing t2, and at a high level at the third timing t3. Thus, when the data terminal 210 and the clock terminal 220 among the data terminal 210, the power supply terminal 230, the reset terminal 240, and the clock terminal 220 are short-circuited, at the first timing t1 to the third timing t3, the output from the data terminal 210 connected to the device 130 to the control unit 39 of the printing apparatus 20 Voltage is configured as follows. The voltage output from the data terminal 210 is different from the first expected value at the first timing t1, different from the second expected value at the second timing t2, and different from the third expected value at the third timing t3.

[0126] When the voltage output from the data terminal 210 of the liquid storage container 100 is at a high level at each of the first timing t1 to the third timing t3, the determination unit of the main control unit 40 411It is determined that there is a short circuit if at least one of the following conditions is met: the data terminal 210 is short-circuited with the power supply terminal 230, or the data terminal 210 is short-circuited with the reset terminal 240. When the data terminal 210 is short-circuited with the power supply terminal 230, or when the data terminal 210 is short-circuited with the reset terminal 240, the voltage of the data terminal 210 becomes approximately the same as the voltage of the power supply terminal 230 or the reset terminal 240. As shown in FIG. 11B, during the first response period RT1 and the second response period RT2, since the power supply terminal 230 and the reset terminal 240 are at a high level, the voltage output from the data terminal 210 of the liquid storage container 100 becomes high level at each of the first timing t1 to the third timing t3. Thus, when at least one of the following conditions is met: when the data terminal 210 is short-circuited with the power supply terminal 230, and when the data terminal 210 is short-circuited with the reset terminal 240, among the data terminal 210, the power supply terminal 230, the reset terminal 240, and the clock terminal 220, the voltage output from the data terminal 210 connected to the device 130 to the control unit 39 of the printing apparatus 20 at the first timing t1 to the third timing t3 is configured as follows. The voltage output from the data terminal 210 Voltage is different from the first expected value at the first timing t1, the same as the second expected value at the second timing t2, and different from the third expected value at the third timing t3.

[0127] As described above, the printing apparatus 20 first detects at the first timing t1 that the data terminal 210 is not short-circuited with the terminals 220, 230, 240, 250 other than the data terminal 210. Then, at the second timing t2, it detects that the liquid storage container 100 is mounted on the printing apparatus 20. Further, at the third timing t3, it confirms again that the data terminal 210 is not short-circuited with the terminals 220, 230, 240, 250 other than the data terminal 210. By detecting the voltage output from the data terminal 210 at the first timing t1 to the third timing t3, it is confirmed that the liquid storage container 100 is in the mounted completed state. As will be described later, the data terminal 210 and the other terminals 220, 230, 240 ,250A short circuit with [the other component] is also assumed to 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, 250 at the first timing t1 before the second timing t2 and the third timing t3 after the second timing t2, it can be accurately confirmed that the liquid storage container 100 is in the fully mounted state. Thus, the mounting detection mechanism of the liquid storage container 100 and the short circuit detection mechanism between the terminals 290 are recognized as independent configurations respectively.

[0128] When the printing device 20 detects that there is no short circuit between the data terminal 210 and the clock terminal 220, 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. When the data terminal 210 and the clock terminal 220 are not short-circuited, in the low-level period of one cycle, if the device 130 outputs the same voltage as the high level to the data terminal 210, the device 130 will also output the same voltage as the high level when the data terminal 210 and the clock terminal 220 are short-circuited. As a result, the printing device 20 that detects the output from the data terminal 210 cannot distinguish whether the data terminal 210 and the clock terminal 220 are short-circuited or not. At the first timing t1 to the third timing t3, by the device 130 outputting a voltage different from the voltage of the clock signal SCK to the data terminal 210, the printing device 20 can 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 supply terminal 230 are short-circuited and when the data terminal 210 and the reset terminal 240 are short-circuited.

[0129] Figures 13A to 20 B With reference to B , a specific example of the connection state determination process will be described. In the following First Specific Example to Ninth Specific Example, one liquid storage container 100A will be described as an example. In the Second Specific Example to Ninth Specific Example, the waveforms shown in FIGS. 13A to 20B schematically show examples of the voltage of the terminal 290 actually observed. The control unit 39 recognizes the voltage output from the data terminal 210 as either a high level or a low level based on a predetermined threshold value.

[0130] (First Specific Example) In the First Specific Example, the case where the liquid storage container 100A is in the fully mounted state will be described. FIG. 13A is a first timing chart of the connection state determination process. FIG. 13B is a second timing chart of the connection state determination process. As shown in FIG. 13A, the sub-control unit 50 transmits a request signal RS to the device 130A of the liquid storage container 100A during the command period CMT. The request signal RS transmitted to the device 130A has the bits of cycle D8 at a high level in order to specify the target liquid storage container 100A. As shown in FIG. 13B, in the fully mounted 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, since the expected value and the detected value are the same at each of the first timing t1 to the third timing t3, the determination unit 421 of the main control unit 40 determines that "the container is present" for the liquid storage container 100A.

[0131] (Second Specific Example) In the second specific example, the determination process of the connection state when a short circuit occurs between the data terminal 210 and the clock terminal 220 will be described. FIG. 14A is the third timing chart of the connection state determination process. FIG. 14B is the fourth timing chart of the connection state determination process. In FIG. 14A, assume that a short circuit occurs between the data terminal 210 and the clock terminal 220 of the liquid storage container 100A at the timing ta before the command period CMT. As shown in FIG. 14B, the change in the voltage output from the data terminal 210 becomes the same as the signal of the clock terminal 220. The sub-control unit 50 detects a high 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 high level at the third timing t3 of cycle D8 in the second response period RT2 from the data terminal 210. In this case, the data terminal 210 and the clock terminal 220 are in a short-circuited state, and the determination unit 411 of the main control unit determines that "there is a short circuit".

[0132] (Third Specific Example) In the third specific example, the determination process of the connection state when a short circuit occurs between the data terminal 210 and the clock terminal 220 will be described. The third specific example is different from the second specific example in that a short circuit occurs between the data terminal 210 and the clock terminal 220 after the device 130 receives the request signal RS . FIG. 15 is the fifth timing chart of the connection state determination process. Assume that a short circuit occurs between the data terminal 210 and the clock terminal 220 of the liquid storage container 100A at the timing tb in the first response period RT1. In this case, the signal output from the data terminal 210 becomes the same as the signal of the clock terminal 220. Therefore, the sub-control unit 50 detects a high 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 high level at the third timing t3 of cycle D8 in the second response period RT2 from the data terminal 210. In this case, for the liquid storage container 100A, the data terminal 210 and the clock terminal 220 are in a short-circuited state, and the determination unit 411 of the main control unit 40 determines that "there is a short circuit".

[0133] (Fourth specific example) The fourth specific example describes the determination process of the connection state when a short circuit occurs between the data terminal 210 and the power supply terminal 230. FIG. 16A is the sixth timing chart of the connection state determination process. FIG. 16B is the seventh timing chart of the connection state determination process. In FIGS. 16A and 16B, it is assumed that a short circuit occurs between the data terminal 210 and the power supply terminal 230 of the liquid storage container 100A at the timing ta before the command period CMT. As shown in FIG. 16B, the change in the voltage output from the data terminal 210 becomes the same as the signal of the power supply terminal 230. The sub-control unit 50 detects a high 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 high level at the third timing t3 of cycle D8 in the second response period RT2 from the data terminal 210. In this case, for the liquid storage container 100A, the data terminal 210 and the power supply terminal 230 are in a short-circuited state, and the determination unit 411 of the main control unit 40 determines that "there is a short circuit".

[0134] (Fifth specific example) The fifth specific example describes the determination process of the connection state when a short circuit occurs between the data terminal 210 and the power supply terminal 230. The fifth specific example is different from the fourth specific example in that a short circuit occurs between the data terminal 210 and the power supply terminal 230 after the device 130 receives the request signal RS. FIG. 17 is the eighth timing chart of the connection state determination process. It is assumed that a short circuit occurs between the data terminal 210 and the power supply terminal 230 of the liquid storage container 100A at the timing tb of the first response period RT1. In this case, the signal output from the data terminal 210 becomes the same as the signal of the power supply terminal 230. Therefore, the sub-control unit 50 detects a high level at the first timing t1 of cycle D8 in the first response period RT1 from the data terminal 210, and cycle D8 in the second response period ofAt the second timing t2, a high level is detected, and at the third timing t3 of cycle D8 in the second response period, a high level is detected. In this case, for the liquid storage container 100A, the data terminal 210 and the power supply terminal 230 are in a short-circuited state, and the determination unit 411 of the main control unit 40 determines that "there is a short circuit".

[0135] (Sixth specific example) In the sixth specific example, the determination process of the connection state when a short circuit occurs between the data terminal 210 and the reset terminal 240 will be described. FIG. 18A is the ninth timing chart of the connection state determination process. FIG. 18B is the tenth timing chart of the connection state determination process. In FIGS. 18A and 18B, it is assumed that a short circuit occurs between the data terminal 210 and the reset terminal 240 of the liquid storage container 100A at the timing ta before the command period CMT. As shown in FIG. 18B, the change in the voltage output from the data terminal 210 becomes the same as the signal of the reset terminal 240. Therefore, the sub-control unit 50 detects a high level 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 from the data terminal 210. In this case, for the liquid storage container 100A, the data terminal 210 and the reset terminal 240 are in a short-circuited state, and the determination unit 411 of the main control unit 40 determines that "there is a short circuit".

[0136] (Seventh specific example) In the seventh specific example, the determination process of the connection state when a short circuit occurs between the data terminal 210 and the reset terminal 240 will be described. The seventh specific example is different from the sixth specific example in that a short circuit occurs between the data terminal 210 and the reset terminal 240 after the device 130 receives the request signal RS. FIG. 19 is the 11th timing chart of the connection state determination process. Assume that a short circuit occurs between the data terminal 210 and the reset terminal 240 of the liquid storage container 100A at the timing tb of the first response period RT1. In this case, the signal output from the data terminal 210 becomes the same as the signal of the reset terminal 240. Therefore, the sub-control unit 50 detects a high level at the first timing t1 of the cycle D8 in the first response period, a high level at the second timing t2 of the cycle D8 in the second response period, and a high level at the third timing t3 of the cycle D8 in the second response period from the data terminal 210. In this case, for the liquid storage container 100A, the data terminal 210 and the reset terminal 240 are in a short-circuited state, and the determination unit 411 of the main control unit 40 determines that "there is a short circuit".

[0137] (Eighth Specific Example) In the eighth specific example, the case where the liquid storage container 100A is in a non-attached completed state will be described. Specifically, in the eighth specific example, the case where the liquid storage container 100A is removed from the storage unit 4 before the device 130A receives the request signal RS will be described. FIG. 20A is the 12th timing chart of the connection state determination process. When the liquid storage container 100A is not attached to the storage unit 4, the drive state of the host terminal HSDA1 of the sub-control unit 50 becomes a low level due to the connected pull-down resistor. Therefore, the sub-control unit 50 detects a low level at the first timing t1 of the cycle D8 in the first response period RT1, a low level at the second timing t2 of the cycle D8 in the second response period RT2, and a low level at the third timing t3 of the cycle D8 D8 in the second response period RT2. In this case, for the liquid storage container 100A, it is in a non-attached completed state, and the determination unit 421 of the main control unit 40 determines that "there is no container".

[0138] (Ninth specific example) In the ninth specific example, the case where the liquid storage container 100A is removed from the storage unit 4 during the first response period RT1 will be described. FIG. 20B is the 13th timing chart of the connection state determination process. The sub-control unit 50 detects a low level at the first timing t1 of the cycle D8 in the first response period RT1, a low level at the second timing t2 of the cycle D8 in the second response period RT2, and a low level at the third timing t3 of the cycle D8 in the second response period RT2. In this case, for the liquid storage container 100A, it is in the non-attached completed state, and the determination unit 421 of the main control unit 40 determines that "there is no container".

[0139] (Other specific examples) In other specific examples, various connection states and the determination results by the determination unit 421 for each connection state will be described. FIG. 20C is a diagram for explaining other specific examples of the connection state determination process. In the connection state determination process, when at least one of the detection values at the first timing t1 and the third timing t3 is different from the expected value, the determination unit 411 of the main control unit 40 determines that "there is a short circuit".

[0140] In the case of No. 1, it is the case where the data terminal 210 and the clock terminal 220 are short-circuited at a timing t before the first timing t1. In this case, the substrate 120 outputs a high-level voltage different from the first expected value to the printing device 20 from the data terminal 210 at the first timing t1, outputs a low-level voltage different from the second expected value at the second timing t2, and outputs a high-level voltage different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that "there is a short circuit".

[0141] In the case of No. 2, it is the case where the data terminal 210 and the clock terminal 220 are short-circuited at the timing t from after the first timing t1 to before the second timing t2. In this case, the substrate 120 outputs, from the data terminal 210, a voltage of the same low level as the first expected value to the printing apparatus 20 at the first timing t1, outputs a voltage of a low level different from the second expected value at the second timing t2, and outputs a voltage of a high level different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that "there is a short circuit".

[0142] In the case of No. 3, it is the case where the data terminal 210 and the clock terminal 220 are short-circuited at the timing t from after the second timing t2 to before the third timing t3. In this case, the substrate 120 outputs, from the data terminal 210, a voltage of the same low level as the first expected value to the printing apparatus 20 at the first timing t1, outputs a voltage of the same high level as the second expected value at the second timing t2, and outputs a voltage of a high level different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that "there is a short circuit".

[0143] In the case of No. 4, it is the case where the short circuit between the data terminal 210 and the clock terminal 220 is eliminated at the timing t from after the first timing t1 to before the second timing t2. In this case, the substrate 120 outputs, from the data terminal 210, a voltage of a high level different from the first expected value to the printing apparatus 20 at the first timing t1, outputs a voltage of the same high level as the second expected value at the second timing t2, and outputs a voltage of the same low level as the third expected value at the third timing t3. In this case, the determination unit 411 determines that "there is a short circuit".

[0144] In the case of No.5, it is the case where the short circuit between the data terminal 210 and the clock terminal 220 is eliminated at a timing t from after the second timing t2 to before the third timing t3. In this case, the substrate 120 outputs, from the data terminal 210 to the printing apparatus 20, a high-level voltage different from the first expected value at the first timing t1, outputs a low-level voltage different from the second expected value at the second timing t2, and outputs a low-level voltage same as the third expected value at the third timing t3. In this case, the determination unit 411 determines that "there is a short circuit".

[0145] In the case of No.6, it is at least one of the cases where the data terminal 210 and the power supply terminal 230 are short-circuited and the data terminal 210 and the reset terminal 240 are short-circuited at a timing t before the first timing t1. In this case, the substrate 120 outputs, from the data terminal 210 to the printing apparatus 20, a high-level voltage different from the first expected value at the first timing t1, outputs a high-level voltage same as the second expected value at the second timing t2, and outputs a high-level voltage different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that "there is a short circuit".

[0146] In the case of No.7, it is at least one of the cases where the data terminal 210 and the power supply terminal 230 are short-circuited or the data terminal 210 and the reset terminal 240 are short-circuited at a timing t from after the first timing t1 to before the second timing t2. In this case, the substrate 120 outputs, from the data terminal 210 to the printing apparatus 20, a low-level voltage same as the first expected value at the first timing t1, outputs a high-level voltage same as the second expected value at the second timing t2, and outputs a high-level voltage different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that "there is a short circuit".

[0147] In the case of No. 8, it is at least one of the cases where the data terminal 210 and the power supply terminal 230 are short-circuited and the data terminal 210 and the reset terminal 240 are short-circuited at a timing t after the second timing t2 and before the third timing t3. In this case, the substrate 120 outputs, from the data terminal 210, a voltage of the same low level as the first expected value to the printing apparatus 20 at the first timing t1, outputs a voltage of the same high level as the second expected value at the second timing t2, and outputs a voltage of a high level different from the third expected value at the third timing t3. In this case, the determination unit 411 determines that "there is a short circuit".

[0148] In the case of No. 9, it is the case where the short circuit between the data terminal 210 and the power supply terminal 230 is eliminated and the short circuit between the data terminal 210 and the reset terminal 240 is eliminated at a timing t after the first timing t1 and before the second timing t2. In this case, the substrate 120 outputs, from the data terminal 210, a voltage of a high level different from the first expected value to the printing apparatus 20 at the first timing t1, outputs a voltage of the same high level as the second expected value at the second timing t2, and outputs a voltage of the same low level as the third expected value at the third timing t3. In this case, the determination unit 411 determines that "there is a short circuit".

[0149] In the case of No. 10, it is the case where the short circuit between the data terminal 210 and the power supply terminal 230 is eliminated and the short circuit between the data terminal 210 and the reset terminal 240 is eliminated at a timing t after the second timing t2 and before the third timing t3. In this case, the substrate 120 outputs, from the data terminal 210, a voltage of a high level different from the first expected value to the printing apparatus 20 at the first timing t1, outputs a voltage of the same high level as the second expected value at the second timing t2, and outputs a voltage of the same low level as the third expected value at the third timing t3. In this case, the determination unit 411 determines that "there is a short circuit".

[0150] A3-4. Other software configurations: In the above-described first embodiment, when the device 130 receives the request signal RS, if the printing apparatus 20 receives the second printing instruction during printing based on the first printing instruction, after the printing based on the first printing instruction is completed and before starting the printing based on the second printing instruction, the device 130 may output the first response signal FS and the second response signal SS to the data terminal 210. When the device 130 receives the request signal RS and the printing apparatus receives the cleaning instruction for the print head 5, before executing the cleaning, the device 130 may output the first response signal FS and the second response signal SS to the data terminal 210. When the device 130 receives the request signal RS, at the replacement position where the carriage 30 can replace the liquid storage container 100, the device 130 outputs the first response signal FS and the second response signal SS to the data terminal 210, and further, when the carriage 30 moves from the replacement position to the standby position where the liquid storage container 100 cannot be replaced, the device 130 may output the first response signal FS and the second response signal SS to the data terminal 210. The replacement position is, for example, the position of the carriage 30 when at the home position.

[0151] 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.

[0152] A4. Other embodiments of the first embodiment: A4-1. Other embodiment 1 regarding the substrate: FIG. 21A is a diagram for explaining a substrate as another embodiment 1. FIG. 21A shows an example of a combination of arrangements of a plurality of contact portions cp. The arrangements of the data contact portion cpd, the clock contact portion cpc, the power supply contact portion cpvd, the reset contact portion cpr, and the ground contact portion cpvs are not limited to those in the above-described first embodiment, and in the figure21A As shown in Combination Nos. 1 to 24, other arrangements may be possible. In Combination Nos. 1 to 24, a clock contact portion cpc, a data contact portion cpd, a power supply contact portion cpvd, and a reset contact portion cpr are arranged in the first region Rg1, and a ground contact portion cpvs is arranged in the second region Rg2.

[0153] In the combination of the arrangements of the contact portions cp, from No. 1 to No. 18, at least one contact portion cp among the clock contact portion cpc, the power supply contact portion cpvd, and the reset contact portion cpr is projected between the projected position swd of the data contact portion cpd and the projected position swvs of the ground contact portion cpvs. In the combination of the arrangements of the contact portions cp, from No. 1 to No. 12, two or more contact portions cp among the clock contact portion cpc, the power supply contact portion cpvd, and the reset contact portion cpr are projected between the projected position swd of the data contact portion cpd and the projected position swvs of the ground contact portion cpvs. In the combination of the arrangements of the contact portions cp, in No. 1 to No. 6 and No. 13 to No. 18, the data contact portion cpd is arranged to be projected between the projected positions of any two contact portions cp among the power supply contact portion cpvd, the reset contact portion cpr, and the clock contact portion cpc. In the combination of the arrangements of the contact portions cp, in No. 1, 3, 8, 11, 14, 15, 20, 23, either or both of the data contact portion cpd and the reset contact portion cpr are arranged to be projected between the power supply contact portion cpvd and the clock contact portion cpc, and the reset contact portion cpr is arranged such that its projected position swr is adjacent to the projected position swvd of the power supply contact portion cpvd. In the combination of the arrangements of the contact portions cp, in No. 1, 2, 6 to 8, 13, 14, 16, 23, 24, the power supply contact portion cpvd is arranged such that its projected position swvd is adjacent to the projected position swd of the data contact portion cpd. In the combination of the arrangements of the contact portions cp, in No. 1, the clock contact portion cpcis arranged to be projected at a position farthest from the projection position swvs of the ground contact portion cpvs, and the data contact portion cpd, the power supply contact portion cpvd, and the reset contact portion cpr are arranged to be projected in order in the direction from the projection position swc of the clock contact portion cpc on the second virtual line C2 to the projection position swvs of the ground contact portion cpvs.

[0154] FIG. 21B shows the arrangement examples shown in No. 2 and No. 3 of FIG. 21A. The substrate 120b is the arrangement example shown in No. 2 of the figure, and the difference from the substrate 120 shown in FIG. 5 is that the positional relationship between the clock contact portion cpc and the reset contact portion cpr is interchanged. The substrate 120c is the arrangement example shown in No. 3 of the figure, and the difference from the substrate 120 shown in FIG. 5 is that the positional relationship between the power supply contact portion cpvd and the reset contact portion cpr is interchanged. 21A The arrangement combination of the contact portions cp shown in FIG. 21A can be similarly applied to the arrangement combination of the data terminal 210, the clock terminal 220, the power supply terminal 230, the reset terminal 240, and the ground terminal 250. The arrangement combination of the contact portions cp shown in FIG. 21A can also be applied to the arrangement combination of the device-side terminals 490. 21A In the first embodiment and FIGS. 21A and 21B, the ground contact portion cpvs is arranged in the second region Rg2, but the contact portions other than the ground contact portion cpvs may be arranged in the second region Rg2. For example, the data contact portion

[0155] cpd, the power supply contact portion cpvd, the reset contact portion cpr, and the ground contact portion cpvs may be arranged in the first region Rg1, and the clock contact portion cpc may be arranged in the second region Rg2. For example, the data contact portion

[0156] cpd, the clock contact portion cpc, the power supply contact portion cpvd, and the ground contact portion cpvs may be arranged in the first region Rg1, and the reset contact portion cpr may be arranged in the second region Rg2. For example, the data contact portion cpd cpd, the clock contact portion cpc, the power supply contact portion cpvd, and the ground contact portion cpvs may be arranged in the first region Rg1, and the reset contact portion cpr may be arranged in the second region Rg2. For example, the data contact portion cpd cpd, the clock contact portion cpc, the power supply contact portion cpvd, and the ground contact portion cpvs may be arranged in the first region Rg1, and the reset contact portion cpr may be arranged in the second region Rg2. For example, the data contact portion cpdThe clock contact portion cpc, the reset contact portion cpr, and the ground contact portion cpvs may be arranged in the first region Rg1, and the power supply contact portion cpvd may be arranged in the second region Rg2. For example, the clock contact portion cpc, the power supply contact portion cpvd, the reset contact portion cpr, and the 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. Also in these forms, 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 that in the first embodiment above.

[0157] A4-2. Another Embodiment 2 Regarding the Substrate: FIG. 22 is a diagram showing two patterns of substrates 120d and 120e as another embodiment 2. The arrangement of the ground contact portion 250 is not limited to the above first embodiment, and other arrangements may be used. In the substrate 120d, the arrangement of the ground contact portion cpvs is different from that of the substrate 120 shown in FIG. 5. The ground contact portion cpvs of the substrate 120d is arranged so as to form the second row R2. When the substrate 120d is used, the connection mechanism 400 shown in FIGS. 7A and 7B includes device-side terminals corresponding to the ground contact portion cpvs of the substrate 120. The number of the ground contact portions cpvs is not limited to the above first embodiment, and may be two or more. In the substrate 120e, the number of the ground contact portions cpvs is different from that of the substrate 120 shown in FIG. 5. The substrate 120e includes two ground terminals 250a and 250b, each including a ground contact portion cpvs. When the substrate 120e is used, the connection mechanism 400 shown in FIGS. 7A and 7B includes two device-side terminals corresponding to the two ground terminals 250a and 250b. The arrangements of the data contact portion cpd, the clock contact portion cpc, the power supply contact portion cpvd and the reset contact portion cpr of the substrate 120e are the same as those of the substrate 120 shown in FIG. 5. The ground contact portion cpvs of the ground terminal 250a and the ground contact portion cpvs of the ground terminal 250b are arranged at different positions in the direction along the first virtual line C1. The ground contact portion cpvs of one ground terminal 250a is arranged so as to form the second row R2. The ground contact portion cpvs of the other ground terminal 250b is arranged so as to form the first row R1.

[0158] A4-3. Other Embodiment 3 Related to the Substrate 3: FIG. 23 is a diagram showing two-pattern substrates 120f and 120g as other embodiment 3. The size of the ground terminal 250 is not limited to that of the first embodiment, and other sizes may be used. The ground terminal 250c of the substrate 120f and the ground terminal 250d of the substrate 120g are larger than the ground terminal 250 shown in FIG. 5. The ground terminal 250c is formed across the first row R1 and the second row R2. The ground terminal 250c is arranged across the central portion CMP of the substrate 120f in the direction along the first virtual line C1. The ground terminal 250d of the substrate 120g is further formed across the first region Rg1 and the second region Rg2. The ground terminal 250d is arranged across the first virtual line C1.

[0159] A4-4. Other Embodiment 4 Related to the Substrate 4: FIG. 24 is a diagram showing two-pattern substrates 120ab and 120ac as other embodiment 4. FIG. 25 is a diagram showing two-pattern substrates 120ad and 120ae as other embodiment 4. The shapes of the terminals 210 to 250 are not limited to those of the first embodiment, and other shapes may be used. As shown in FIG. 24, the terminals 210 to 250 of the substrate 120ab are formed to straddle the first row R1 and the second row R2 and have an elongated shape along the first virtual line C1. The terminals 210 to 250 of the substrate 120ac have an elongated shape portion along the first virtual line C1 in addition to a rectangular portion like the terminals 210 to 250 of the substrate 120. The data terminal 210 of the substrate 120ad has a portion bent in the directions along the first virtual line C1 and the second virtual line C2. The data terminal 210 of the substrate 120ae has a portion bent in the directions along the first virtual line C1 and the second virtual line C2 so as to surround a part of the power supply terminal 230. Even in this case, the positional relationship of each contact portion cp of the terminals 210 to 250 is the same as the positional relationship of each contact portion cp shown in FIG. 5 of the first embodiment.

[0160] A4-5. Other Embodiment 5 Related to the Substrate 5: FIG. 26 is a diagram for explaining a substrate 120Td as another embodiment 5. The upper diagram in FIG. 26 shows the substrate 120Td. The lower diagram in FIG. 26 schematically shows a connection mechanism 400Td corresponding to the substrate 120Td. In the substrate 120 in the first embodiment, the plurality of contact portions cp were arranged to form two columns, but it is not limited to this. In the substrate 120Td, the contact portions are arranged to form three columns. The data contact portion cpd and the ground contact portion cpvs form the third Column . Thus, even if the arrangement of the contact portion cp in the first embodiment is different in the direction along the first virtual line C1, the projection position onto the second virtual line C2 does not change. When the substrate 120Td is mounted in the direction along the gravitational direction, in the substrate 120Td, the clock contact portion cpc, the power supply contact portion cpvd, and the reset contact portion cpr are arranged on the +Z direction side, which is the side in the gravitational direction, rather than the data contact portion cpd. Also, at least one of the contact portions cpc, cpvd, cpr among the clock contact portion cpc, the power supply contact portion cpvd, and the reset contact portion cpr is arranged so as to be projected between the projection position swd of the data contact portion cpd and the projection position swvs of the ground contact portion cpvs when the contact portion cp is projected onto the second virtual line C2. The contact portions cp other than the data contact portion cpd and the ground contact portion cpvs are also the data contact portions of this embodiment cpdSimilar to the ground contact portion cpvs, it may be arranged at a position different from the contact portion cp in the first embodiment in the direction along the first virtual line C1. The positional relationship of each of the above contact portions cp also has a similar relationship for each contact portion cp of the device-side terminal 490. When the substrate 120Td is mounted in the direction along the gravitational direction, the device-side clock contact portion dcpc, the device-side power supply contact portion dcpvd, and the device-side reset contact portion dcpr are arranged on the +Z direction side, which is the gravitational direction side, rather than the device-side data contact portion dcpd. Further, at least one of the contact portions dcpc, dcpvd, and dcpr of the device-side clock contact portion dcpc, the device-side power supply contact portion dcpvd, and the device-side reset contact portion dcpr is arranged so as to be projected between the projection position swd of the device-side data contact portion dcpd and the projection position swvs of the device-side ground contact portion dcpvs when the contact portion dcp is projected onto the second virtual line C2.

[0161] A4-6. Another Embodiment 6 Regarding the Substrate: FIG. 27 is a diagram showing two-pattern substrates 120U and 120V as another embodiment 6 related to the substrate. The form of the base material 120bd of the substrate 120 is not limited to the above first embodiment. The substrate 120U is commonly used for the four liquid storage containers 100A to 100D. In this case, the four liquid storage containers 100A to 100D may be integrally formed. The substrate 120U includes 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 a region where the terminal 290 used for the liquid storage container 100A is arranged. The second substrate region 120UB is a region where the terminal 290 used for the liquid storage container 100B is arranged. The third substrate region 120UC is a region where the terminal 290 used for the liquid storage container 100C is arranged. The fourth substrate region 120UD is a region where the terminal 290 used for the liquid storage container 100D is arranged. The first substrate region 120UA to the fourth substrate region 120UD may be regarded as independent substrates respectively. Four devices 130A to 130D used for the four liquid storage containers 100A to 100D are provided on the back surface 120fb of the substrate 120U. The terminals 290 of each substrate region 120UA to 120UD are connected to the corresponding devices 130A to 130D via a wiring pattern layer (not shown) and through holes arranged in the substrate 120U. Here, a power supply voltage VDD is supplied to each of the devices 130A to 130D via a common power supply terminal 230. In this embodiment, the common power supply terminal 230 is provided at the terminal 290 of the first substrate region 120UA. Therefore, in the substrate 120U, the power supply terminal 230 is not provided at the terminals 290 of the second substrate region 120UB to Fourth substrate area 120UD. As described above, some of the terminals 290 may be commonly used for the plurality of devices 130A to 130D.

[0162] In the above-described first embodiment, the base material 120bd of the substrate 120 is composed of a single member, but it is not limited thereto, and it may be composed of a plurality of base materials. In the substrate 120V, the device 130 and the terminal 290 are not arranged on a single base material but on separate base materials 124a and 124b. The substrate 120V has a first base material 124a and a second base material 124b. The first base material 124a and the second base material 124b are electrically connected by a conductive wire EL or the like. The first base material 124a and the second base material 124b are different in material. The first base material 124a is, for example, a rigid substrate, and the second base material 124b is a sheet-like substrate. The device 130 is molded by the resin 139 on the front surface 120faa of the first base material 124a. The terminal 290 is arranged on the front surface 120fab of the second base material 124b.

[0163] A4-7. Another Embodiment 7 Regarding the Substrate FIG. 28 is a diagram showing the substrate 120X of another embodiment 7 related to the substrate. In the above first embodiment, as shown in FIG. 5, the types of the terminals 290 were five types: the data terminal 210, the clock terminal 220, the power supply terminal 230, the reset terminal 240, and the ground terminal 250. However, the present invention is not limited to this, and it may be less than five types. For example, the substrate 120X has a data terminal 210, a clock terminal 220, a power supply terminal 230, and a ground terminal 250. The substrate 120X does not have a reset terminal 240. In this case, the reset signal RST is generated using the clock signal SCK in the processing unit 136 of the device 130, for example. For example, in the substrate 120X, the power supply terminal 230 may not be provided. In this case, the power supply voltage VDD is generated using the clock signal SCK in the processing unit 136 of the device 130, for example. For example, in the substrate 120X, the power supply terminal 230 may be provided and the reset terminal 240 may not be provided. As described above, the terminal 290 of the first embodiment may not include at least one of the reset terminal 240 and the power supply terminal 230. In the case of this embodiment, among the terminals 290 of the substrate 120, the terminals 290 other than the ground terminal 250 are referred to as "other terminal groups". 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 cpvs can also be called the first contact portion. The data contact portion cpd can also be called the second contact portion. The clock contact portion cpc can also be called the third contact portion.

[0164] A4-8. Another Embodiment 8 Related to the Substrate: In the embodiments of the present disclosure, the arrangement of the terminals 290 and the contact portions cp may be an arrangement in which they are swapped across the first virtual line C1. An arrangement in which the terminals constituting the first column and the terminals constituting the second column are swapped may also be acceptable.

[0165] A4-9. Another Embodiment 1 of the Liquid Containment Container: The liquid storage container of the present disclosure is not limited to the liquid storage container 100 shown in FIG. 3, and may have other configurations. Hereinafter, other embodiments of the liquid storage container 100 will be described. For the liquid storage container 100 of the first embodiment shown in FIGS. 3 and 4 and the same configurations among other embodiments of the liquid storage container, the same reference numerals will be given and the description will be omitted as appropriate. Note that the configuration of the storage unit 4 and the like shown in FIG. 4 and the printing apparatus 20 is changed corresponding to the configuration of the liquid storage container.

[0166] FIG. 29 is a perspective view showing a liquid storage container 100p as another embodiment of the liquid storage container. The liquid storage container 100p includes a liquid storage body 101, a liquid supply unit 104 having a liquid supply port 104op, and a substrate 120. The liquid storage body 101 forms an ink chamber 150 for storing ink therein. The liquid supply unit 104 is formed on the bottom wall 101wb and communicates with the ink chamber 150. The substrate 120 is provided at a corner portion 89 where the third wall 101wb and the second wall 101wr of the liquid storage body 101 intersect. After engaging the protruding second container engaging portion 320 of the first wall 101wf with the recess of the storage unit 4, the liquid storage container 100p rotates and moves in the rotational mounting direction RD with the second container engaging portion 320 as a fulcrum, 100p and is mounted on the storage unit 4. In the completed mounting state, the protruding first container engaging portion 310 of the second wall 101wr engages with the lever of the storage unit 4. In the present embodiment, the mounting direction MD includes components in the +Z direction and the -Y direction, and the first direction F D is Z direction both positive and negative of and Y direction of both positive and negative components.

[0167] A4-10. Another embodiment 2 of the liquid storage container: FIG. 30 is a perspective view showing a liquid storage container 100q as another embodiment 2 of the liquid storage container. FIG. 31 is an enlarged view of the periphery of the substrate 120 of the liquid storage container 100q. As shown in FIG. 30, the liquid storage container 100q includes a liquid storage body 101, a liquid supply unit 104 having a liquid supply port 104op, and a substrate 120. Inside the liquid storage body 101, a liquid storage bag (not shown) for storing ink is disposed. The liquid storage bag has flexibility and functions as an ink chamber 150. The liquid supply unit 104 is provided on the liquid storage bag and is disposed in an opening 424 formed in the front wall 101wf of the liquid storage body 101. The substrate 120 is provided at a corner portion 89a where the second wall 101wr and the fourth wall 101wu of the liquid storage body 101 intersect. The corner portion 89a is a recessed portion that is recessed inward of the liquid storage body 101. In the present embodiment, the mounting direction MD is the -Y direction, and the first direction FD is Y direction both positive and negative of Y and Z direction both positive and negative includes the components of.

[0168] A4-11. Another Embodiment 3 of the Liquid Storage Container: FIG. 32 is a perspective view showing a liquid storage container 100r as another embodiment 3 of the liquid storage container. In the liquid storage container 100r, the -Y direction is the mounting direction MD. The liquid storage container 100r includes a liquid storage body 101, a liquid supply unit 104 having a liquid supply port 104op, and a substrate 120. Inside the liquid storage body 101, a liquid storage bag (not shown) for storing ink is disposed. This liquid storage bag has flexibility and functions as an ink chamber 150. The liquid supply unit 104 is provided on the liquid storage bag and is disposed at an opening 424 formed in the second wall 101wr of the liquid storage body 101. The substrate 120 is provided at a corner portion 89a where the second wall 101wr and the fourth wall 101wu of the liquid storage body 101 intersect. The corner portion 89a is a recessed portion that is recessed inward of the liquid storage body 101. A groove-shaped container-side engagement structure 425 is formed in the third wall 101wb of the liquid storage body 101. The container-side engagement structure 425 restricts the movement in the +Y direction side, which is the removal direction of the liquid storage container 100, by engaging with the protruding device-side engagement structure of the storage portion 4 in the mounted state of the liquid storage container 100r. In the present embodiment, the mounting direction MD is the -Y direction, and the first direction FD is Y direction both positive and negative of Y and Z direction both positive and negative includes the components of.

[0169] A4-12. Another Embodiment 4 of the Liquid Storage Container: FIG. 33 is a perspective view showing a liquid storage container 100s as another embodiment 4 of the liquid storage container. The liquid storage container 100s is detachably accommodated in a case 61 that is pullably provided in the printing apparatus 20, and then is attached to the printing apparatus 20 together with the case 61. The liquid storage container 100s includes a liquid storage bag 111 and a connection member 112 attached to one end portion on the -Y direction side of the liquid storage bag 111. In the present embodiment, the liquid storage bag 111 and the connection member 112 function as a liquid storage body. The liquid storage bag 111 has flexibility. A liquid supply unit 104 having a liquid supply port 104op is provided on the -Y direction side of the liquid storage bag 111 that functions as an ink chamber 150. The liquid supply unit 104 is disposed in an opening 424 formed in a second wall 101wr of the connection member 112. The substrate 120 is disposed in a corner portion 89a that is a recess formed in the second wall 101wr of the connection member 112. In the present embodiment, the mounting direction MD is the -Y direction, and the first direction FD is Y direction both positive and negative of Y and Z direction both positive and negative includes the components of

[0170] A4-13. Another embodiment 5 of the liquid storage container: FIG. 34 is a perspective view showing a liquid storage container 100w as another embodiment 5 of the liquid storage container. In the liquid storage container 100w, the substrate 120 is disposed on a fourth wall 101wu that becomes a horizontal surface in the mounted state. The fourth wall 101wu constitutes an upper wall in the mounted state. The liquid storage container 100w includes a liquid storage body 101 and a liquid supply unit 104 having a liquid supply port 104op, similar to the liquid storage container 100 shown in FIGS. 3 and 4. Inside the liquid storage body 101, a flexible liquid storage bag (not shown) that stores ink is disposed. This liquid storage bag functions as an ink chamber 150. The liquid supply unit 104 is provided in the liquid storage bag and is disposed in an opening 424 formed in a second wall 101wr of the liquid storage body 101. In the present embodiment, the mounting direction MD is the -Y direction, and the first direction FD is Y direction of both positive and negative exists.

[0171] A4-14. Other Embodiment 6 of the Liquid Containment Container: FIG. 35 is a perspective view showing a liquid containment container 100x as other embodiment 6 of the liquid containment container. In the liquid containment container 100x, in the state where mounting is completed, the substrate 120 is disposed on a fifth wall 101wsa that becomes a vertical surface. The fifth wall 101wsa constitutes a side wall in the state where mounting is completed. The liquid containment container 100x includes a liquid containment body 101 and a liquid supply unit 104 having a liquid supply port 104op, similar to the liquid containment container 100 shown in FIGS. 3 and 4. Inside the liquid containment body 101, a flexible liquid containment bag (not shown) for containing ink is disposed. This liquid containment bag functions as an ink chamber 150. The liquid supply unit 104 is provided in the liquid containment bag and is disposed at an opening 424 formed in the second wall 101wr of the liquid containment body 101. In the present embodiment, the mounting direction MD is the -Y direction, and the first direction FD is Y direction both positive and negative of exists.

[0172] A4-15. Other Embodiment 7 of the Liquid Containment Container: FIG. 36 is a view showing a liquid containment container 100y as other embodiment 7 of the liquid containment container. In the liquid containment container 100 of the first embodiment, as shown in FIGS. 3 and 4, the liquid containment body 101 and the substrate 120 are integrally formed, but it is not limited thereto. For example, the liquid containment container 100y has a liquid containment body 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 containment body 101ya. The liquid containment body 101ya is removably accommodated in a concave-shaped adapter 101yb. The adapter 101yb functions as a case for accommodating the liquid containment body 101ya. An opening 134 through which the liquid supply unit 104 is inserted is formed in a third wall 101wb of the adapter 101yb. The liquid containment body 101ya may be fixed to the adapter 101yb using a fixing member (not shown). The liquid containment body 101ya does not have to be fixed to the adapter 101yb.

[0173] Another Embodiment 8 of the Liquid Containment Container: FIG. 37 is a diagram showing liquid containment containers 100g and 100h as another embodiment 8 of the liquid containment container. In the liquid containment container 100 of the first embodiment, as shown in FIGS. 4 to 6, a plurality of terminals 290 and a device 130 were arranged on the base material 120bd, but it is not limited thereto. In the liquid containment container 100g, a plurality of terminals 290 and a device 130 are directly arranged on the second wall 101wr of the liquid containment body 101 without passing 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. In this way, the liquid containment body 101, the plurality of terminals 290, and the device 130 may be integrally configured as the liquid containment container 100g.

[0174] In the liquid containment container 100h, a plurality of terminals 290 are directly arranged on the second wall 101wr of the liquid containment body 101 without passing through the base material 120bd. The device 130 is arranged on the mounting base material 120h and is arranged on the second wall 101wr of the liquid containment body 101 through the mounting base material 120h. The plurality of terminals 290 and the device 130 are electrically connected by a wiring pattern (not shown) or the like. In this way, the liquid containment body 101 and the plurality of terminals 290 may be integrally configured as the liquid containment container 100h, and the device 130 may be configured separately.

[0175] Another Embodiment 9 of the Liquid Containment Container: FIG. 38 is a perspective view showing a liquid storage container 100z as another embodiment 9 of the liquid storage container. FIG. 39 is an enlarged view around a substrate 120 of the liquid storage container 100z. The XYZ axes shown in each figure of the other embodiment 9 are based on the state when the liquid storage container 100z is completely inserted into a storage section (to be described later) of the printing apparatus. When mounting the liquid storage container 100z on the printing apparatus, two mounting operations are performed. In the present embodiment, the first direction FD has Y-direction components and Z-direction components, and the second direction SD is in the X direction. As shown in FIG. 38, the liquid storage container 100z includes a liquid storage body 101z, a liquid supply section 104 having a liquid supply port 104op, and a substrate 120. The liquid storage body 101z has a storage main body 101za capable of storing a liquid, and a cover member 101zb attached to the storage main body 101za. The liquid supply section 104 is disposed in an opening 424 formed in a third wall 101wb of the liquid storage body 101z formed by the cover member 101zb. The substrate 120 is provided at a corner portion 89z where a second wall 101wr and the third wall 101wb of the liquid storage body 101z intersect. The corner portion 89z is a recessed portion recessed inward of the liquid storage body 101z.

[0176] As shown in FIG. 39, the substrate 120 has a different orientation from that in FIG. 5, and the data terminal 210 and the reset terminal 240 are located on the -Z direction side of the clock terminal 220, the power supply terminal 230, and the ground terminal 250.

[0177] FIG. 40 is a first diagram for explaining a process of mounting the liquid storage container 100z on a storage section 4z of the printing apparatus. FIG. 41 is a second diagram for explaining a process of mounting the liquid storage container 100z on the storage section 4z of the printing apparatus. FIG. 42 is a diagram showing a state where the mounting of the liquid storage container 100z is completed. The storage section 4z is disposed at a location different from a printing head (not shown). The storage section 4z and the printing head are communicated with each other by a liquid flow pipe (not shown). The liquid of the liquid storage container 100z mounted on the storage section 4z is supplied to the printing head through the liquid flow pipe.

[0178] As shown in FIG. 40, the liquid storage container 100z is inserted into the mounting chamber 65 of the storage portion 4z through the attachment / detachment opening 474 of the storage portion 4z by moving the liquid storage container 100z in the first mounting direction MD1 which is horizontal. The first mounting direction MD1 is - in the Y direction.

[0179] As shown in FIG. 41, the liquid storage container 100z is pushed forward in the first mounting direction MD1 until contact is completed between the device-side terminal 490 of the connection mechanism 400 of the storage portion 4z and the terminal 290 of the substrate 120. By pushing down the second wall 101wr side of the liquid storage container 100z shown in FIG. 41, the liquid storage container 100z rotates and moves in the second mounting direction MD2 having a component in the gravitational direction about the rotation fulcrum Rp provided in the storage portion 4z. The second mounting direction MD2 has a component in the +Z direction and + Y direction direction.

[0180] As shown in FIG. 42, when the rotational movement of the liquid storage container 100z in the second mounting direction MD2 is completed, the liquid supply portion 104 of the liquid storage container 100z and the liquid introduction portion 6 of the storage portion 4z are connected. In the present embodiment, either the first mounting direction MD1 or the second mounting direction MD2 is the mounting direction MD.

[0181] A4-18. Another Embodiment 10 of the Liquid Storage Container: In the above first embodiment and other embodiments, the liquid storage container 100 was an ink cartridge, but it is not limited thereto. The liquid storage container 100 may be, for example, a waste liquid storage container. The waste liquid storage container is, for example, a container that stores waste liquid discharged from the nozzles of the print head 5 when the printing apparatus 20 executes cleaning of the print head 5.

[0182] A4-19. Another Embodiment 1 of the Printing System: The printing system of the present disclosure is not limited to the printing system 1000 shown in FIG. 1. FIG. 43 is a diagram showing a printing system 1000A as another embodiment 1 of the printing system. In the above first embodiment, as shown in FIG. 1, the liquid storage container 100 is configured as an on-carriage type that is mounted on the carriage 30, but it is not limited thereto. The liquid storage container 100 may be configured as an off-carriage type that is mounted at a location different from the carriage 30. The printing system 1000A is an off-carriage type printing system and includes a printing device 20A and a liquid storage container 100T. The printing device 20A has a carriage 30 including a print head 5. The liquid storage container 100T is detachably mounted on a container mounting portion 600 disposed at a location different from the carriage 30. Similar to the liquid storage container 100 of the first embodiment, the liquid storage container 100T also includes a liquid storage body, a liquid storage portion having an ink supply port, and a substrate. For example, the liquid storage containers 100q to 100x shown in FIGS. 30 to 35 are mounted on the printing device 20A. Similar to the printing device 20, the printing device 20A executes a connection state determination process.

[0183] A4-20. Another Embodiment 2 of the Printing System: FIG. 44 is a diagram showing a printing system 1000C as another embodiment 2 of the printing system. In the first embodiment, as shown in FIG. 1, the accommodating portion 4 for detachably mounting the liquid storage container 100 was arranged inside the main body of the printing apparatus 20, but the position of the accommodating portion 4 is not limited to this. In the printing system 1000C shown in FIG. 45, the accommodating portion 4C included in the printing apparatus 20C is arranged outside the main body 201 of the printing apparatus 20C. As shown in FIGS. 7A and 7C, the accommodating portion 4C includes a liquid introduction portion 6, a connection mechanism 400, and a sub-control board 500. The liquid introduction portion 6 and the print head 5 arranged in the main body 201 communicate with each other through a flexible liquid circulation pipe 105. A plurality of liquid circulation pipes 105 are provided according to the number of the liquid introduction portions 6. The plurality of liquid circulation pipes 105 are accommodated in one protective tube 106. Further, the printing apparatus 20C has a bus 107 that connects the sub-control board 500 and a main control portion 40 (not shown) located in the main body 201 to transmit and receive various signals. Regarding the liquid storage container 100 shown in FIG. 44 It also includes a liquid storage body, a liquid supply portion having a liquid supply port, and a substrate, similar to the liquid storage container 100 of the first embodiment. Similar to the printing apparatus 20, the printing apparatus 20C executes a determination process for the connection state.

[0184] A4-21. Another Embodiment 3 of the Printing System: FIG. 45 is a diagram showing a printing system 1000D as another embodiment 3 of the printing system. The printing system 1000D includes four liquid storage containers 100A, 100B, 100C, and 100D and the printing apparatus 20 shown in FIG. 1, similar to the first embodiment. The liquid storage containers 100A to 100D may be integrally formed or may be individually formed. The liquid storage containers 100A to 100D are replenished through an external liquid storage portion 814 and a liquid circulation pipe 812 arranged outside the printing system 1000D body. In FIG. 45, among the liquid storage portion 814 and the liquid circulation pipe 812, the elements corresponding to the liquid storage containers 100A to 100D are suffixed with "A" to "D" at the end. , liquid

[0185] A4-22. Other Embodiment 4 of the Printing System 4: FIG. 46 is a diagram showing a printing system 1000E as another embodiment 4 of the printing system. The printing system 1000E includes an adapter 101E having a substrate 120, a liquid container 824 capable of storing a liquid, a liquid circulation pipe 822, and the printing apparatus 20 shown in FIG. 1. The adapter 101E can be detachably attached to the housing portion 4. The liquid circulation pipe 822 connects the liquid container 824 and the liquid introduction portion 6 and functions as a liquid supply portion. The portion of the liquid circulation pipe 822 connected to the liquid introduction portion 6 functions as a liquid supply port. Four each of the adapter 101E, the liquid circulation pipe 822, and the liquid container 824 are provided. In the printing system 1000E, the "fully attached state" means a state in which the adapter 101E having the substrate 120 is attached to the printing apparatus 20 and no short circuit occurs between the terminals 290. In the present embodiment, "the substrate 120 is attached to the printing apparatus 20" means that the substrate 120 is physically attached to the printing apparatus 20 and the contact portion cp of the terminal 290 is electrically connected to the apparatus-side terminal 490. The data terminal 210 of the substrate 120 is used to detect whether or not the substrate 120 is attached to the printing apparatus 20. The attachment determination unit 412 of the printing apparatus 20 determines whether or not the substrate 120 is attached. The first response signal RT1 and the second response signal RT2 are signals used by the printing apparatus 20 to determine that the substrate 120 is attached to the printing apparatus 20.

[0186] A4-23. Other Embodiments Regarding Electrical Configuration and Software Configuration: In the above-described first embodiment, as shown in FIG. 1, the four liquid storage containers 100A to 100D were detachably attached to the storage unit 4. However, the number of liquid storage containers 100 detachably attached to the storage unit 4 is not limited to this. Hereinafter, with reference to FIGS. 47A and 47B, a timing chart of the connection state determination process in the printing system 1000 in which six liquid storage containers 100 are detachably attached to the storage unit 4 will be described. For example, different colors of ink are stored in the six liquid storage containers 100. FIGS. 47A and 47B are timing charts schematically showing signals input and output to and from the terminal 290 of the liquid storage container 100 in the mounted state. FIG. 47A is a first timing chart in the printing system 1000 including six liquid storage containers 100A to 100F. FIG. 47B is a second timing chart in the printing system 1000 including six liquid storage containers 100A to 100F. FIG. 47A corresponds to FIG. 11A, and FIG. 47B corresponds to FIG. 11B. The figure 47A and the figure 47B VDD, RST, SCK, SDA1 to SDA6 shown in indicate signals transmitted and received or voltages supplied via the corresponding terminals 290 by the corresponding lines LVDD, LRST, LSCK, and LSDA1 to LSDA6.

[0187] The difference between the request signal RS shown in FIG. 47A and the request signal RS shown in FIG. 11A is that the bits of the cycle D4, D3 of the command period CMT shown in FIG. 47A are allocated to specify the fifth liquid storage container 100E and the sixth liquid storage container 100F. For the request signal RS transmitted via the data line LSDA5 connected to the device 130E of the liquid storage container 100E, the second bit of the first identification data DB1 is at a high level, and the remaining bits are at a low level. For the request signal RS transmitted via the data line LSDA6 connected to the device 130F of the liquid storage container 100F, the first bit of the first identification data DB1 is at a high level, and the remaining bits are at a low level.

[0188] The difference between the timing chart shown in FIG. 47B and the timing chart shown in FIG. 11B is that waveforms of the first response signal FS and the second response signal SS corresponding to the liquid storage containers 100E and 100F are added. The device 130E of the liquid storage container 100E outputs the first response signal FS to the data terminal 210 in the cycle D4 of the first response period RT1, and outputs the second response signal SS to the data terminal 210 in the cycle D4 of the second response period RT2. The device 130F of the liquid storage container 100F outputs the first response signal FS to the data terminal 210 in the cycle D3 of the first response period RT1, and outputs the second response signal SS to the data terminal 210 in the cycle D3 of the second response period RT2.

[0189] FIG. 48 is a diagram schematically showing the electrical configuration of a printing system 1000 including six liquid storage containers 100A to 100F. In FIG. 48, the same components as those in the electrical configuration shown in FIG. 8 are denoted by the same reference numerals and the description thereof is omitted as appropriate. The difference between the electrical configuration in FIG. 48 and the electrical configuration shown in FIG. 8 is that in FIG. 8, the other lines LSDA, LRST, LSCK, and LVDD except the ground line LVSS were independently provided corresponding to the four liquid storage containers 100A to 100D, while in FIG. 48, the other lines LRST, LSCK, and LVDD except the data line LSDA are commonly used for a plurality of devices 130. Note that also in FIG. 48, the ground line LVSS is commonly used for the devices 130A to 130F of the six liquid storage containers 100A to 100F.

[0190] As shown in FIG. 48, the power line LVDD2 electrically connected to the host terminal HVDD2 of the sub-control unit 50 is electrically connected to the two devices 130B and 130E in the fully mounted state. The reset line LRST2 electrically connected to the host terminal HRST2 of the sub-control unit 50 is electrically connected to the two devices 130B and 130C in the fully mounted state. The clock line LSCK2 electrically connected to the host terminal HSCK2 of the sub-control unit 50 is electrically connected to the two devices 130B and 130D in the fully mounted state. The power line LVDD4 electrically connected to the host terminal HVDD4 of the sub-control unit 50 is electrically connected to the two devices 130C and 130D in the fully mounted state. The reset line LRST4 electrically connected to the host terminal HRST4 of the sub-control unit 50 is electrically connected to the two devices 130D and 130E in the fully mounted state. The clock line LSCK4 electrically connected to the host terminal HSCK4 of the sub-control unit 50 is electrically connected to the two devices 130C and 130E in the fully mounted state. The lines LSDA1, LVDD1, LRST1, LSCK1 electrically connected to the device 130A and the lines LSDA6, LVDD6, LRST6, LSCK6 electrically connected to the device 130F are used independently without being used in combination with other devices 130.

[0191] Regarding the electrical configuration of the printing system 1000 shown in FIG. 48, some configurations may be applied to the printing system 1000 shown in FIG. 1 including four liquid storage containers 100A to 100D. For example, the liquid storage containers 100B to 100E shown in FIG. 48 may be used by replacing them with the liquid storage containers 100A to 100D of the printing system 1000 shown in FIG. 1. For example, the liquid storage containers 100A, 100B, 100E, 100F shown in FIG. 48 may be used by replacing them with the liquid storage containers 100A to 100D of the printing system 1000 shown in FIG. 1.

[0192] A4-24. Other Embodiments 1 Regarding Devices: In the first embodiment described above, as shown in FIG. 6, the device 130 included the processing unit 136 and the storage unit 138, but the present invention is not limited to this. FIG. 49 is a diagram showing devices 130a and 130b as other embodiments 1 related to the device 130. The device 130a includes the processing unit 136 but does not include the storage unit 138. The storage unit 138 and the device 130 may be separate bodies. In this case, the storage unit 138 is electrically connected to the processing unit 136 of the device 130b. The device 130b includes 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 136a and the terminals 210 to 250. In such a configuration, the first processing unit 136a and the second processing unit 136b function as a processing unit as a whole. Thus, the device 130b may have a plurality of processing units 136a and 136b.

[0193] A4-25. Other Embodiments 2 Related to the Device: In the first embodiment described above, as shown in FIG. 11C, the first response signal FS was output during the entire period when the clock signal SCK was at a high level, but the present invention is not limited to this. For example, the device 130 may output the first response signal FS to the data terminal 210 during a part of the period when the clock signal SCK is at a high level. For example, the device 130 may set the driving state of the data terminal 210 to a high impedance after outputting the first response signal FS during the period when the clock signal SCK is at a high level. For example, the device 130 may output the first response signal FS including a low level during the period when the clock signal SCK is at a low level and during the period when the clock signal is at a high level in one cycle of the clock signal SCK.

[0194] A4-26. Other Embodiments 3 Related to the Device: In the above-described first embodiment, in the connection state determination process, as shown in FIGS. 11A and 11B, the frequency of the clock signal SCK was constant, 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 that in the first response period RT1, and the second response signal SS may be output longer than the first response signal FS.

[0195] A4-27. Other Embodiments 4 Related to the Device: In the above-described first embodiment, 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 this order while the reset signal RST is at a high level. After the processing unit 136 of the device 130 outputs the low-level voltage of the second response signal SS to the data terminal 210, when the request signal RS is input to the data terminal 210 again, the first response signal FS and the second response signal SS may be output to the data terminal 210.

[0196] A4-28. Other Embodiments 5 Related to the Device: In the above-described first embodiment, as shown in FIG. 11B, the rising and falling edges of the clock signal SCK, and the rising and falling edges of signals such as the first response signal FS in the first response period RT1 and signals such as the second response signal SS in the second response period RT2 were at the same timing, but it is not limited thereto. For example, the rising and falling edge timings of signals such as the first response signal FS in the first response period RT1 and signals such as the second response signal SS in the second response period RT2 may be delayed from the rising and falling edge timings of the clock signal SCK.

[0197] A4-29. Other Embodiments 6 Related to the Device: In the first embodiment described above, the processing units 136A to 136D of the 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 it is not limited thereto. For example, the processing units 136A to 136D of the 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 state determination process, the printing apparatus 20 transmits and receives signals via the individual data lines LSDA1 to LSDA4 electrically connected to the devices 130A to 130D. Therefore, even if the first response signal FS or the second response signal SS is output from the devices 130A to 130D to the data terminal 210 in the same cycle during the first response period RT1 or the second response period RT2 to is output, 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 timing t1 to the third timing t3. In this case, the request signal RS is set to a high level at the corresponding bit of the command period CMT.

[0198] For example, the processing units 136A to 136D of the devices 130A to 130D may output the first response signal FS and the second response signal SS to the data terminal 210 in all of the cycles D3 to D8 of the first response period RT1 and the second response period RT2. In this case, the first timing t1 may be provided in all of the cycles D3 to D8 of the first response period RT1. In all of the cycles D3 to D8 of the second response period RT2, the second timing t2 and the third timing t3 may be provided.

[0199] A4-30. Device of the Another Embodiment 7: In the above-described first embodiment, the processing units 136A to 136D of the devices 130A to 130D output the first response signal FS and the second response signal SS to the data terminal 210 in cycles D8 to D5 of the first response period, but it is not limited thereto. For example, the processing units 136A to 136D of the devices 130A to 130D may output the first response signal FS and the second response signal SS to the data terminal 210 in cycles D5 to D8 of the first response period. In this case, the request signal RS is set to a high level at the corresponding bit of the command period CMT.

[0200] A4-31. Other Embodiments 8 Related to Devices: In the above-described first embodiment, the device 130 is configured such that the request signal RS is input to the data terminal 210 and the first response signal FS and the second response signal SS are output 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 terminals for outputting the first response signal FS and the second response signal SS may be terminals other than the data terminal 210. In that case, the device 130 is connected to its terminals.

[0201] B. Other Forms: The present disclosure is not limited to the above-described embodiments, and can be realized in various configurations without departing from the gist thereof. For example, the technical features of the embodiments corresponding to the technical features in each of the forms described below can be appropriately replaced or combined in order to solve some or all of the above problems, or to achieve some or all of the above objects. Further, if the technical feature is not described as essential in this specification, it can be appropriately deleted. Each of the following forms does not necessarily include all the configurations of the present disclosure. Each of the following forms only needs to have a minimum configuration for solving the above problems or achieving the above objects. The effects corresponding to one form are independent of the effects corresponding to other forms unless otherwise specified. In the combined form, the effects corresponding to the combined form are exhibited.

[0202] (1) According to a first aspect of the present disclosure, there is provided a device configured to be electrically connected to a plurality of terminals of a liquid storage container mounted on a housing portion of a printing apparatus including a print head, a liquid introduction portion that introduces liquid into the print head, a housing portion in which the liquid introduction portion is provided, and a plurality of device-side terminals provided in the housing portion. This device is configured to satisfy I, II, III, and IV described below. I: Output a first signal including a first low voltage, a second signal including a second low voltage and a second high voltage higher than the second low voltage, to a first terminal included in the plurality of terminals. II: The first signal and the second signal are used by the printing apparatus to determine that the first terminal and other terminals other than the first terminal included in the plurality of terminals are not short-circuited and that the liquid storage container is mounted on the printing apparatus. III: Output the first signal to the first terminal, and after outputting the first signal, output the second signal to the first terminal. IV: A clock signal in which a low voltage and a high voltage are repeated alternately and at a predetermined period is input to a second terminal included in the other terminals. At a first timing during a period in which the voltage input to the second terminal is the high voltage, output the first low voltage to the first terminal. After outputting the first low voltage, at a second timing during a period in which the voltage input to the second terminal is the low voltage, output the second high voltage to the first terminal. After outputting the second high voltage, at a third timing during a period in which the voltage input to the second terminal is the high voltage, output the second low voltage to the first terminal. According to this embodiment, at a predetermined first timing during a period when the voltage input to the second terminal is a high voltage, a first low voltage is output to the first terminal. After outputting the first low voltage, at a second timing during a period when the voltage input to the second terminal is a low voltage, a second high voltage is output to the first terminal. After outputting the second high voltage, at a third timing during a period when the voltage input to the second terminal is a high voltage, a second low voltage is output to the first terminal. Thereby, the device can output a signal used to determine that the first terminal of the liquid storage container and other terminals are not short-circuited and that the liquid storage container is mounted on the printing device. Even if it is determined that the liquid storage container is mounted on the printing device, the possibility that the printing device does not operate normally and the possibility that reading and writing to the device of the liquid storage container cannot be performed normally can be reduced. The device in this embodiment has improvements beyond the prior art.

[0203] (2) In the above embodiment, when the first terminal and the other terminal are not short-circuited, in one cycle of the clock signal, during the period of the high voltage, the first low voltage may be output to the first terminal before the first timing. Generally, the voltage is output more stably after a certain time has elapsed since the output than immediately after the output. According to this embodiment, in one cycle of the clock signal, by outputting the first low voltage to the first terminal before the first timing during the period of the high voltage, the device can output a signal to the printing device at the first timing with the first low voltage output to the first terminal in a stable state.

[0204] (3) In the above-described embodiment, when the first terminal and the other terminal are not short-circuited, in one period of the clock signal, during the period of the low voltage, before the second timing, the second high voltage may be output to the first terminal. According to this embodiment, in one period of the clock signal, within the period of the low voltage, by outputting the first high voltage to the first terminal before the second timing, the device can output a signal to the printing apparatus at the second timing with the first high voltage output to the first terminal in a stable state.

[0205] (4) In the above-described embodiment, when the first terminal and the other terminal are not short-circuited, in one period of the clock signal, during the period of the high voltage, before the third timing, the second low voltage may be output to the first terminal. According to this embodiment, in one period of the clock signal, within the period of the high voltage, by outputting the second low voltage to the first terminal before the third timing, the device can output a signal to the printing apparatus at the third timing with the second low voltage output to the first terminal in a stable state.

[0206] (5) In the above-described embodiment, when the first terminal and the other terminal are not short-circuited, in one period of the clock signal, when the voltage input to the second terminal changes from the high voltage to the low voltage, the second high voltage is output to the first terminal, and when the voltage input to the second terminal changes from the low voltage to the high voltage, the second low voltage may be output to the first terminal. According to this embodiment, the voltage output to the first terminal is different from the voltage input to the second terminal. When the first terminal and the second terminal are short-circuited, the voltage of the first terminal becomes the same as the voltage of the second terminal. Therefore, it is possible to distinguish between the case where the first terminal and the second terminal are not short-circuited and the case where they are short-circuited. Thus, the device can output a signal indicating that the first terminal and the other terminal are not short-circuited and that the liquid storage container is mounted on the printing apparatus.

[0207] (6) In the above-described embodiment, when the first terminal and the other terminal are not short-circuited, if the voltage input to the second terminal changes from the low voltage to the high voltage, the first low voltage may be output to the first terminal. According to this embodiment, the voltage output to the first terminal is different from the voltage input to the second terminal. When the first terminal and the second terminal are short-circuited, the voltage of the first terminal becomes the same as the voltage of the second terminal. Therefore, it is possible to distinguish between the case where the first terminal and the second terminal are not short-circuited and the case where they are short-circuited. Thus, the device can output a signal indicating that the first terminal and the other terminal are not short-circuited and that the liquid storage container is attached to the printing apparatus.

[0208] (7) In the above-described embodiment, the above III and IV may be performed a plurality of times. Due to the influence of static electricity or the like, the first signal may not be correctly input from the printing apparatus. According to this embodiment, by performing the above III and the above IV a plurality of times, even if there is an influence such as static electricity, the device can output a signal indicating that the first terminal and the other terminal are not short-circuited and that the liquid storage container is attached.

[0209] (8) In the above-described embodiment, when the printing apparatus receives a second printing instruction during printing based on the first printing instruction, after the printing based on the first printing instruction is completed and before starting the printing based on the second printing instruction, the first signal and the second signal may be output to the first terminal. According to this embodiment, after the printing based on the first printing instruction is completed and before starting the printing based on the second printing instruction, by outputting the first signal and the second signal to the first terminal, even during continuous printing, the device can output a signal indicating that the first terminal and the other terminal are not short-circuited and that the liquid storage container is attached to the printing apparatus.

[0210] (9) In the above-described embodiment, when the printing apparatus receives a cleaning instruction for the print head, before executing the cleaning, the first signal and the second signal may be output to the first terminal. According to this embodiment, when the printing apparatus receives a cleaning instruction for the print head, by the device outputting a signal indicating that the first terminal and other terminals are not short-circuited and that the liquid storage container is mounted on the printing apparatus, it is possible to suppress the failure of cleaning due to communication failure.

[0211] (10) In the above-described embodiment, at the replacement position where the storage unit can replace the liquid storage container, the first signal and the second signal are output to the first terminal, and when the storage unit moves from the replacement position to a standby position where the liquid storage container cannot be replaced, the first signal and the Second second signal may be output to the first terminal. According to this embodiment, immediately after replacing the liquid storage container, the mounting posture of the liquid storage container may be unstable. There is a possibility that the mounting posture of the liquid storage container changes while moving to the standby position. Along with the change in the mounting posture, there is a possibility that a short circuit may occur between the first terminal and other terminals, or a contact failure may occur between the liquid storage container and the printing apparatus. Therefore, by outputting the first signal and the second signal to the first terminal also at the replacement position and also at the immediately subsequent standby position, the device can output a signal indicating that the first terminal and other terminals are not short-circuited and that the liquid storage container is mounted on the printing apparatus. Alternatively, at the replacement position, there may be a case where the user operates to move to the standby position even though the replacement of the liquid storage container is not completed. In such a case, by outputting the first signal and the second signal to the first terminal when moving to the standby position, the device can output a signal indicating that the first terminal and other terminals are not short-circuited and that the liquid storage container is mounted on the printing apparatus.

[0212] (11) In the above-described embodiment, the first terminal may be a data terminal, the second terminal may be a clock terminal, the first signal may be a first response signal that responds to the printing device, and the second signal may be a second response signal that responds to the printing device.

[0213] (12) In the above-described embodiment, information regarding the liquid stored in the liquid storage container may be stored in the device.

[0214] (13) In the above-described embodiment, a reset signal including a low voltage and a high voltage may be input to a third terminal included in the other terminal, and a power supply voltage may be input to a fourth terminal included in the other terminal.

[0215] (14) In the above-described embodiment, after the power supply voltage is input to the fourth terminal, when the reset signal changes from the low voltage to the high voltage, the high voltage is input to the third terminal. After the high voltage of the reset signal is input to the third terminal, a clock signal may be input to the second terminal. After the high voltage of the reset signal is input to the third terminal, a first signal may be input to the first terminal.

[0216] (15) In the above-described embodiment, the power supply voltage supplied to the fourth terminal may be used to drive the device.

[0217] (16) In the above-described embodiment, the third terminal may be a reset terminal, and the fourth terminal may be a power supply terminal.

[0218] According to a second aspect of the present disclosure, there is provided a substrate mounted on a printing apparatus including a print head, a liquid introduction unit that introduces a liquid into the print head, a housing unit that is provided with the liquid introduction unit and houses a liquid storage container, and a plurality of device-side terminals provided in the housing unit, the substrate being configured to contact the plurality of device-side terminals. The substrate includes a base material, a device provided on the base material, and a plurality of terminals provided on the base material and electrically connected to the device. The plurality of terminals include a first terminal and other terminals including a second terminal, and are configured to satisfy I, II, III, and IV described below. I: The device outputs, from the first terminal to the printing apparatus, a first signal including a first low voltage, a second low voltage, and a second high voltage higher than the second low voltage. Second Signal. II: The printing apparatus uses the first signal and the second signal to determine that the first terminal and the other terminals are not short-circuited and that the substrate is mounted on the printing apparatus. III: The device outputs the first signal to the first terminal, and after outputting the first signal, outputs the second signal to the first terminal. IV: When the first terminal and the other terminals are not short-circuited, a clock signal in which a low voltage and a high voltage are repeated alternately and at a predetermined period is input from the printing apparatus to the second terminal. At a first timing during a period in which the voltage input to the second terminal is the high voltage, as a first expected value, the first low voltage is output from the first terminal to the printing apparatus. After outputting the first low voltage, at a second timing during a period in which the voltage input to the second terminal is the low voltage, as a second expected value, the second high voltage is output from the first terminal to the printing apparatus. After outputting the second high voltage, at a third timing during a period in which the voltage input to the second terminal is the high voltage, as a third expected value, the second low voltage is output from the first terminal to the printing apparatus. According to this embodiment, at a predetermined first timing during a period when the voltage input to the second terminal is a high voltage, a first low voltage is output from the first terminal to the printing apparatus. After outputting the first low voltage, at a second timing during a period when the voltage input to the second terminal is a low voltage, a second high voltage is output from the first terminal to the printing apparatus. After outputting the second high voltage, at a third timing during a period when the voltage input to the second terminal is a high voltage, a second low voltage is output from the first terminal to the printing apparatus. Thereby, the device can output a signal used to determine that the first terminal of the liquid storage container and other terminals are not short-circuited and that the liquid storage container is mounted on the printing apparatus, and the substrate outputs the signal output by this device from the first terminal to the printing apparatus. Even though it is determined that the liquid storage container is mounted on the printing apparatus, it is possible to reduce the possibility that the printing apparatus does not operate normally and the possibility that reading and writing to the device of the liquid storage container cannot be performed normally. The substrate in this embodiment has improvements beyond the prior art.

[0219] (18) In the above embodiment, when the first terminal and the second terminal are short-circuited, at the first timing, a voltage different from the first expected value is output from the first terminal to the printing apparatus, at the second timing, a voltage different from the second expected value is output from the first terminal to the printing apparatus, and at the third timing, a voltage different from the third expected value may be output from the first terminal to the printing apparatus. According to this embodiment, a voltage indicating that a short circuit has occurred can be output from the substrate.

[0220] (19) In the above-described embodiment, if the first terminal and the second terminal are short-circuited after the first timing and before the second timing, at the first timing, a voltage equal to the first expected value is output from the first terminal to the printing device, at the second timing, a voltage different from the second expected value is output from the first terminal to the printing device, and at the third timing, a voltage different from the third expected value may be output from the first terminal to the printing device. According to this embodiment, the same effect as in the above-described embodiment (18) can be obtained.

[0221] (20) In the above-described embodiment, if the first terminal and the second terminal are short-circuited after the second timing and before the third timing, at the first timing, a voltage equal to the first expected value is output from the first terminal to the printing device, at the second timing, a voltage equal to the second expected value is output from the first terminal to the printing device, and at the third timing, a voltage different from the third expected value may be output from the first terminal to the printing device. According to this embodiment, the same effect as in the above-described embodiment (18) can be obtained.

[0222] (21) In the above-described embodiment, if the short circuit between the first terminal and the second terminal is eliminated after the first timing and before the second timing, at the first timing, a voltage different from the first expected value is output from the first terminal to the printing device, at the second timing, a voltage equal to the second expected value is output from the first terminal to the printing device, and at the third timing, a voltage equal to the third expected value may be output from the first terminal to the printing device. According to this embodiment, the same effect as in the above-described embodiment (18) can be obtained.

[0223] (22) In the above-described embodiment, when the short circuit between the first terminal and the second terminal is eliminated after the second timing and before the third timing, at the first timing, a voltage different from the first expected value is output from the first terminal to the printing apparatus, at the second timing, a voltage different from the second expected value is output from the first terminal to the printing apparatus, and at the third timing, a voltage equal to the third expected value may be output from the first terminal to the printing apparatus. According to this embodiment, the same effect as that of the above-described embodiment (18) can be obtained.

[0224] (23) In the above-described embodiment, the first terminal may be a data terminal, the second terminal may be a clock terminal, the first signal may be a first response signal that responds to the printing apparatus, and the second signal may be a second response signal that responds to the printing apparatus.

[0225] (24) In the above-described embodiment, the other terminals may include a third terminal and a fourth terminal. A reset signal including a low voltage and a high voltage may be input to the third terminal, and a power supply voltage may be input to the fourth terminal. According to this embodiment, the printing apparatus can determine, using the device, that the first terminal, the second terminal, the third terminal, and the fourth terminal included in the other terminals are not short-circuited, and that the liquid storage container is attached to the printing apparatus.

[0226] (25) In the above-described embodiment, when at least one of the cases where the first terminal and the third terminal are short-circuited and where the first terminal and the fourth terminal are short-circuited occurs, at the first timing, a voltage different from the first expected value is output from the first terminal to the printing apparatus, at the second timing, a voltage equal to the second expected value is output from the first terminal to the printing apparatus, and at the third timing, a voltage different from the third expected value may be output from the first terminal to the printing apparatus. According to this embodiment, the same effect as that of the above-described embodiment (18) can be obtained.

[0227] (26) In the above-described embodiment, when at least one of the cases where the first terminal and the third terminal are short-circuited and the first terminal and the fourth terminal are short-circuited from after the first timing until before the second timing, at the first timing, a voltage equal to the first expected value is output from the first terminal to the printing device, at the second timing, a voltage equal to the second expected value is output from the first terminal to the printing device, and at the third timing, a voltage different from the third expected value may be output from the first terminal to the printing device. According to this embodiment, the same effect as in the above-described embodiment (18) can be obtained.

[0228] (27) In the above-described embodiment, when at least one of the cases where the first terminal and the third terminal are short-circuited and the first terminal and the fourth terminal are short-circuited from after the second timing until before the third timing, at the first timing, a voltage equal to the first expected value is output from the first terminal to the printing device, at the second timing, a voltage equal to the second expected value is output from the first terminal to the printing device, and at the third timing, a voltage different from the third expected value may be output from the first terminal to the printing device. According to this embodiment, the same effect as in the above-described embodiment (18) can be obtained.

[0229] (28) In the above-described embodiment, when the short circuit between the first terminal and the third terminal is eliminated and the short circuit between the first terminal and the fourth terminal is eliminated from after the first timing until before the second timing, at the first timing, a voltage different from the first expected value is output from the first terminal to the printing device, at the second timing, a voltage equal to the second expected value is output from the first terminal to the printing device, and at the third timing, a voltage equal to the third expected value may be output from the first terminal to the printing device. According to this embodiment, the same effect as in the above-described embodiment (18) can be obtained.

[0230] According to the above aspect, when the short circuit between the first terminal and the third terminal is eliminated and the short circuit between the first terminal and the fourth terminal is eliminated from after the second timing until before the third timing, at the first timing, a value different from the first expected value Voltage is output from the first terminal to the printing device, and at the second timing, the same as the second expected value Voltage is output from the first terminal to the printing device, and at the third timing, the same as the third expected value Voltage may be output from the first terminal to the printing device. According to this aspect, the same effect as the aspect of the above (18) is obtained.

[0231] In addition to the above aspects, the present disclosure can be implemented in the form of a liquid storage container, a system, a substrate, or the use of a liquid storage container, a control method for a device, a substrate, a system, etc.

Description of reference numerals

[0232] 4, 4C, 4z... housing part, 5... printing head, 6... liquid introduction part, 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 part, 80... connector, 89, 89a... corner part, 90... computer, 100, 100A~100F, 100T, 100g, 100h, 100p~100s, 100w, 100x, 100y, 100z... liquid storage container, 101... liquid storage body, 101wf... first wall, 101wr... second wall, 101wb... third wall, 101wu... fourth wall, 101wsa... fifth wall, 101wsb... sixth wall, 101ya... liquid storage body, 101yb... adapter, 104... liquid supply part, 104f... film, 104op... liquid supply port, 105... liquid flow pipe, 106... protection tube, 107... bus, 110... liquid detection member, 111... liquid storage bag, 112... connection member, 120, 120A, 120Td, 120U, 120V, 120X, 120ab, 120ac, 120ad, 120ae, 120c, 120d, 120f, 120g, 120j, 120k... substrate, 120UA... first substrate area, 120UB... second substrate area, 120UC... third substrate area, 120UD... fourth substrate area, 120a... first protrusion, 120fa... front surface, 120fb... back surface, 122... hole, 123... slit, 124a... first base material, 124b... second base material, 127... battery, 130, 130A~130F... device, 134... opening, 136, 136A... processing part, 136a... first processing part, 136b... second processing part, 138... memory part, 139... resin, 150... ink chamber, 201... main body, 210... data terminal, 220... clock terminal, 230... power supply terminal, 240... reset terminal, 250, 250a, 250b, 250c, 250d,... ground terminal, 290... terminal, 301... slit, 310... first cartridge engaging part, 320... second cartridge engaging part, 400... connection mechanism, 403~403E... contact part forming member, 405... terminal holding part, 410... device side terminal, 411... determination part, 412... determination part, 412... mounting determination part, 414... short circuit determination part, 415... CPU, 416... device side first memory part, 420, 430, 440,450, 490... Device-side terminals, 421... Judgment unit, 424... Opening, 425... Container-side engagement structure, 431 - 434, 439... Relay terminals, 441... Power supply, 474... Detachable opening, 495... Display panel, 500... Sub-control board, 510, 520, 530, 540, 550, 590... Sub-control board terminals 511... Switching unit, 516... Device-side second memory unit, 600... Cartridge mounting part, 812, 822... Liquid flow pipes, 814... Liquid storage part, 824... Liquid container, 990... Board holding part, 1000, 1000A, 1000B, 1000C, 1000D, 1000E... Printing system, BCC1... First execution command, BCC2... Second execution command, C1... First virtual line, C2... Second virtual line, CMP... Central part, CMT... Command period, D1 - D9... Cycles, DB1... First identification data, DB2... Second identification data, HSDA, HSDA1 - HSDA6, HVDD, HVDD1 - HVDD4, HVDD6, HRST, HRST1 - HRST4, HRST6, HSCK, HSCK1 - HSCK4, HSCK6, HVSS... Host terminals, LSDA, LSDA1 - LSDA6... Data lines, LVDD, LVDD1 - LVDD4, LVDD6... Power lines, LRST, LRST1 - LRST4, LRST6... Reset lines, LSCK, LSCK1 - LSCK4, LSCK6... Clock lines, LVSS... Ground line, MD... Mounting direction, MD1... First mounting direction, MD2... Second mounting direction, MP... Intermediate point, P1... First parity data, P2... Second parity data, PA... Printing medium, R1... First column, R2... Second column, RD... Rotational mounting direction, RS... Request signal, RST... Reset signal, Rg1... First region, Rg2... Second region, Rp... Rotation center, SCK... Clock signal, FD... First direction, SD... Second direction, SDA,SDA1 to SDA6... data signals, SL... second line segment, SS... second response signal, TL... third line segment, VDD... power supply voltage, VSS... ground potential, Vcr... virtual circle, Wa... distance, cp... contact part, cp1... first contact part, cp2... second contact part, cp3... third contact part, cp4... fourth contact part, cp5... fifth contact part, cpc... clock contact part, cpd... data contact part, cpr... reset contact part, cpvd... power supply contact part, cpvs... ground contact part, dcpc... device-side clock contact part, dcpd... device-side data contact part, dcpr... device-side reset contact part, dcpvd... device-side power supply contact part, dcpvs... device-side ground contact part, t1... first timing, t2... second timing, t3... third timing, ta, tb... timing

Claims

1. A device configured to be electrically connected to a plurality of device-side terminals provided on a liquid storage container attached to a housing of a printing apparatus, the printing apparatus including a print head, a liquid introduction unit for introducing liquid into the print head, a housing provided with the liquid introduction unit, and a plurality of device-side terminals provided in the housing, the plurality of device-side terminals being configured to contact corresponding ones of the plurality of device-side terminals respectively, wherein when a clock signal in which a low voltage and a high voltage are repeated alternately and at a predetermined period is used, a predetermined timing during a period in which the voltage input to a second terminal included in the plurality of device-side terminals is the high voltage is defined as a first timing, a predetermined timing during a period in which the voltage input to the second terminal by the clock signal is the low voltage and which is after the first timing is defined as a second timing, and a predetermined timing during a period in which the voltage input to the second terminal by the clock signal is the high voltage and which is after the second timing is defined as a third timing, when the first terminal included in the plurality of device-side terminals is not short-circuited with the other plurality of device-side terminals and the liquid storage container is attached to the housing, combinations of voltages detected by the printing apparatus at the first terminal at the first timing, the second timing, and the third timing are defined as a first combination of voltages, the first combination of voltages is a combination of voltages detected by the printing apparatus, including a first low voltage lower than a predetermined voltage at the first timing, a second high voltage higher than the predetermined voltage at the second timing, and a third low voltage lower than the predetermined voltage at the third timing, the first combination of voltages is used for the printing apparatus to determine that the first terminal is not short-circuited with the other plurality of device-side terminals and the liquid storage container is attached to the housing, a device.

2. The device according to claim 1, wherein A device that outputs the first low voltage to the first terminal before the first timing during a period of the high voltage in one cycle of the clock signal when the first terminal and the other plurality of device-side terminals are not short-circuited and the liquid storage container is mounted in the storage portion.

3. The device according to claim 1 or claim 2, A device that outputs the second high voltage to the first terminal before the second timing during a period of the low voltage in one cycle of the clock signal when the first terminal and the other plurality of device-side terminals are not short-circuited and the liquid storage container is mounted in the storage portion.

4. The device according to any one of claims 1 to 3, A device that outputs the third low voltage to the first terminal before the third timing during a period of the high voltage in one cycle of the clock signal when the first terminal and the other plurality of device-side terminals are not short-circuited and the liquid storage container is mounted in the storage portion.

5. The device according to any one of claims 1 to 4, When the first terminal and the other plurality of device-side terminals are not short-circuited and the liquid storage container is mounted in the storage portion, in one cycle of the clock signal, when the voltage input to the second terminal changes from the high voltage to the low voltage, the second high voltage is output to the first terminal, a device that outputs the third low voltage to the first terminal when the voltage input to the second terminal changes from the low voltage to the high voltage.

6. The device according to any one of claims 1 to 5, A device that outputs the first low voltage to the first terminal when the voltage input to the second terminal changes from the low voltage to the high voltage when the first terminal and the other plurality of device-side terminals are not short-circuited and the liquid storage container is mounted in the storage portion.

7. The device according to any one of claims 1 to 6, A device that sets the combination of voltages to the first combination of voltages each time the determination is made in order for the determination by the printing device to be made a plurality of times.

8. The device according to any one of claims 1 to 7, wherein when the printing apparatus receives a second printing instruction during printing based on a first printing instruction, after the printing based on the first printing instruction is completed and before starting the printing based on the second printing instruction, the combination of voltages is set to the combination of the first voltages for the determination by the printing apparatus.

9. The device according to any one of claims 1 to 8, wherein when the printing apparatus receives a cleaning instruction for the print head, before executing the cleaning, the combination of voltages is set to the combination of the first voltages for the determination by the printing apparatus.

10. The device according to any one of claims 1 to 9, wherein at an exchange position where the housing portion can exchange the liquid container, the combination of voltages is set to the combination of the first voltages for the determination by the printing apparatus.

11. The device according to any one of claims 1 to 10, wherein the first terminal is a data terminal, and the second terminal is a clock terminal.

12. The device according to any one of claims 1 to 11, wherein information regarding the liquid stored in the liquid container is stored in the device.

13. The device according to any one of claims 1 to 12, wherein a third terminal included in the other plurality of device-side terminals is a reset terminal to which a reset signal including a low voltage and a high voltage is input, and a fourth terminal included in the other plurality of device-side terminals is a power supply terminal to which a power supply voltage is input.

14. The device according to claim 13, wherein after the power supply voltage is input to the fourth terminal, when the reset signal changes from the low voltage to the high voltage, the high voltage is input to the third terminal, after the high voltage of the reset signal is input to the third terminal, a clock signal is input to the second terminal, and after the high voltage of the reset signal is input to the third terminal, the combination of voltages is set to the combination of the first voltages for the determination by the printing apparatus.

15. The device according to claim 13 or claim 14, wherein the power supply voltage supplied to the fourth terminal is a device used to drive the device. **Claim 16** A printing apparatus including a print head, a liquid introduction unit that introduces liquid to the print head, a housing unit in which the liquid introduction unit is provided, and a plurality of device-side terminals provided in the housing unit, a plurality of device-side terminals configured to contact each of the plurality of device-side terminals, and a device configured to be electrically connected to the plurality of device-side terminals, and a liquid storage container mounted in the housing unit, A printing system comprising: When a clock signal in which a low voltage and a high voltage are alternately repeated at a predetermined cycle is used, a predetermined timing during a period in which the voltage input to the second terminal included in the plurality of device-side terminals is the high voltage is defined as a first timing, and a predetermined timing during a period in which the voltage input to the second terminal by the clock signal is the low voltage and which is after the first timing is defined as a second timing, and a predetermined timing during a period in which the voltage input to the second terminal by the clock signal is the high voltage and which is after the second timing is defined as a third timing, the device is when the first terminal included in the plurality of device-side terminals is not short-circuited with the other plurality of device-side terminals and the liquid storage container is mounted in the housing unit, at the first timing, the second timing, and the third timing, a combination of voltages detected by the printing apparatus at the first terminal is defined as a first combination of voltages, the first combination of voltages is a combination of voltages detected by the printing apparatus, including a first low voltage lower than a predetermined voltage at the first timing, a second high voltage higher than the predetermined voltage at the second timing, and a third low voltage lower than the predetermined voltage at the third timing, the printing apparatus is using the first combination of voltages to determine that the first terminal is not short-circuited with the other plurality of device-side terminals and the liquid storage container is mounted in the housing unit, A printing system. **Claim 17** The printing system according to claim 16, wherein The printing system, wherein when the device has no short circuit between the first terminal and the other plurality of device-side terminals and the liquid storage container is mounted in the storage portion, during the period of the high voltage in one cycle of the clock signal, the first low voltage is output to the first terminal before the first timing.

18. The printing system according to claim 16 or claim 17, wherein when the device has no short circuit between the first terminal and the other plurality of device-side terminals and the liquid storage container is mounted in the storage portion, during the period of the low voltage in one cycle of the clock signal, the second high voltage is output to the first terminal before the second timing.

19. The printing system according to any one of claims 16 to 18, wherein when the device has no short circuit between the first terminal and the other plurality of device-side terminals and the liquid storage container is mounted in the storage portion, during the period of the high voltage in one cycle of the clock signal, the third low voltage is output to the first terminal before the third timing.

20. The printing system according to any one of claims 16 to 19, wherein the device has no short circuit between the first terminal and the other plurality of device-side terminals, and when the liquid storage container is mounted in the storage portion, in one cycle of the clock signal, when the voltage input to the second terminal changes from the high voltage to the low voltage, the second high voltage is output to the first terminal, and when the voltage input to the second terminal changes from the low voltage to the high voltage, the third low voltage is output to the first terminal.

21. The printing system according to any one of claims 16 to 20, wherein when the device has no short circuit between the first terminal and the other plurality of device-side terminals and the liquid storage container is mounted in the storage portion, when the voltage input to the second terminal changes from the low voltage to the high voltage, the first low voltage is output to the first terminal.

22. The printing system according to any one of claims 16 to 21, The printing system is such that, for the determination by the printing apparatus to be made a plurality of times, the combination of voltages is set to the combination of the first voltages each time the determination is made.

23. The printing system according to any one of claims 16 to 22, wherein, when the device receives a second printing instruction while the printing apparatus is performing printing based on a first printing instruction, before starting printing based on the second printing instruction after the printing based on the first printing instruction is completed, for the determination by the printing apparatus to be made, the combination of voltages is set to the combination of the first voltages.

24. The printing system according to any one of claims 16 to 23, wherein, when the device receives a cleaning instruction for the print head, before executing the cleaning, for the determination by the printing apparatus to be made, the combination of voltages is set to the combination of the first voltages.

25. The printing system according to any one of claims 16 to 24, wherein the device at the replacement position where the housing portion can replace the liquid container, for the determination by the printing apparatus to be made, sets the combination of voltages to the combination of the first voltages; when the housing portion moves from the replacement position to a standby position where the liquid container cannot be replaced, for the determination by the printing apparatus to be made, sets the combination of voltages to the combination of the first voltages.

26. The printing system according to any one of claims 16 to 25, wherein the first terminal is a data terminal, and the second terminal is a clock terminal.

27. The printing system according to any one of claims 16 to 26, wherein information regarding the liquid stored in the liquid container is stored in the device.

28. The printing system according to any one of claims 16 to 27, wherein a third terminal included in the other plurality of device-side terminals is a reset terminal to which a reset signal including a low voltage and a high voltage is input, and a fourth terminal included in the other plurality of device-side terminals is a power supply terminal to which a power supply voltage is input.

29. The printing system according to claim 28, wherein: after the power supply voltage is input to the fourth terminal, when the reset signal changes from the low voltage to the high voltage, the high voltage is input to the third terminal; after the high voltage of the reset signal is input to the third terminal, the clock signal is input to the second terminal; the device sets the voltage combination to the first voltage combination for the determination by the printing apparatus after the high voltage of the reset signal is input to the third terminal. A printing system.

30. The printing system according to claim 28 or claim 29, wherein: the power supply voltage supplied to the fourth terminal is used to drive the device. A printing system.

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