Printing device

Abstract

To suppress display disturbance of a display by a charged person touching a mechanical switch.SOLUTION: A printer includes an operation part substrate B1 which is connected to a display 60 and is mounted with a display control circuit for controlling the display 60, a relay substrate B2 connected to the operation part substrate B1 through first wiring W1, a main substrate B3 which is connected to the relay substrate B2 through second wiring B2 and is mounted with a printing control circuit for controlling a printing mechanism, and a home switch SW1 connected to the relay substrate B2 through third wiring W3 not through both the operation part substrate B1 and the main substrate B3, wherein a distance between the home switch SW1 and the operation part substrate B1 is shorter than a distance between the home switch SW1 and the relay substrate B2.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a printing apparatus.

Background Art

[0002] Conventionally, as disclosed in Patent Document 1, there is known a printing apparatus including a display control board connected to a display and equipped with a display control circuit for controlling the display, a main board connected to the display control board and equipped with a printing control circuit for controlling a printing mechanism, and a mechanical switch connected to the display control board.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the printing apparatus disclosed in Patent Document 1, since the display control board and the mechanical switch are directly connected, there is a possibility that static electricity may enter the display control board when a charged person touches the mechanical switch, resulting in a disturbance in the display of the display.

Means for Solving the Problems

[0005] The printing apparatus of the present invention includes a printing mechanism, a display, a first substrate connected to the display and having a display control circuit mounted thereon for controlling the display, a second substrate different from the first substrate and connected to the first substrate via a first wiring, a third substrate different from both the first substrate and the second substrate and connected to the second substrate via a second wiring different from the first wiring and having a printing control circuit mounted thereon for controlling the printing mechanism, and a mechanical switch connected to the second substrate via a third wiring different from both the first wiring and the second wiring without passing through either the first substrate or the third substrate. The distance between the mechanical switch and the first substrate is closer than the distance between the mechanical switch and the second substrate.

[0006] The printing apparatus of the present invention includes a printing mechanism, a display, a first substrate connected to the display and having a display control circuit mounted thereon for controlling the display, a second substrate different from the first substrate and connected to the first substrate via a first wiring, a third substrate different from both the first substrate and the second substrate and connected to the second substrate via a second wiring different from the first wiring and having a printing control circuit mounted thereon for controlling the printing mechanism, and a mechanical switch connected to the second substrate via a third wiring different from both the first wiring and the second wiring without passing through either the first substrate or the third substrate. The distance between the mechanical switch and the display is closer than the distance between the mechanical switch and the second substrate.

Brief Description of the Drawings

[0007]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0008] A printing apparatus A according to an embodiment of the present invention will be described. The printing apparatus A of the present embodiment performs printing on roll paper or manually inserted cut paper by an inkjet method based on a print job received from an external device 100 (see FIG. 6) such as a PC (Personal Computer) connected communicably. Further, the printing apparatus A of the present embodiment is assumed to be a large-format printer for printing posters and POPs.

[0009] FIG. 1 is a view of the printing apparatus A seen from the +X direction, and FIG. 2 is a view of the printing apparatus A seen from the -Y direction. In each drawing, the directions are described using XYZ axis coordinates, but this is for convenience of explanation only and does not limit the present invention in any way.

[0010] Based on FIGS. 1 and 2, the schematic configuration of the printing apparatus A will be described. The printing apparatus A includes two left and right support legs 1, a stacker 2, and an apparatus main body 3.

[0011] The support legs 1 support the stacker 2 and the apparatus main body 3. At the lower end of each support leg 1, two front and rear casters 11 are provided. The stacker 2 receives the roll paper Pr or the cut paper Pc discharged from the discharge port 312 of the apparatus main body 3.

[0012] The apparatus main body 3 includes a housing 31, an operation panel 32, a roll body set portion 33, a conveyance mechanism 34, a printing mechanism 35, and a door 36. The housing 31 includes an upper housing 31a and a lower housing 31b provided in the -Z direction of the upper housing 31a. A manual insertion port 311 is provided on the +Y direction surface of the lower housing 31b, and a discharge port 312 is provided on the -Y direction surface of the lower housing 31b. Although not shown in FIGS. 1 and 2, the apparatus main body 3 includes a plurality of substrates B (see FIGS. 4 to 6). The plurality of substrates B refer to an operation unit substrate B1, a relay substrate B2, a main substrate B3, and a sub-substrate B4.

[0013] The operation panel 32 is provided at the +X direction end and +Z direction end on the -Y direction surface of the upper housing 31a. The operation panel 32 functions as a user interface. Details of the operation panel 32 will be described later.

[0014] A roll body R around which roll paper Pr is wound in a roll shape is set in the roll body set portion 33. Cut paper Pc is manually inserted into the manual insertion port 311.

[0015] The conveyance mechanism 34 unwinds the roll paper Pr from the roll body R set in the roll body set portion 33 and conveys it toward the discharge port 312. Also, the conveyance mechanism 34 conveys the cut paper Pc manually inserted from the manual insertion port 311 toward the discharge port 312. The conveyance mechanism 34 includes a plurality of conveyance roller pairs 341 and a conveyance motor (not shown) that is a drive source for the conveyance roller pairs 341.

[0016] The printing mechanism 35 performs printing on the roll paper Pr or the cut paper Pc. The printing mechanism 35 includes a platen 351, a carriage 352, a carriage guide 353, and a carriage motor (not shown). The platen 351 supports the roll paper Pr or the cut paper Pc conveyed by the conveyance mechanism 34. A plurality of print heads 355 are mounted on the carriage 352. The print head 355 discharges ink by an inkjet method. The carriage guide 353 is provided along the width direction of the roll paper Pr or the cut paper Pc, that is, the X direction, and guides the movement of the carriage 352. The carriage motor is a drive source for the carriage 352. Printing is performed on the roll paper Pr or the cut paper Pc supported by the platen 351 by the print head 355 discharging ink while the carriage 352 reciprocates along the carriage guide 353. Thus, although the printing mechanism 35 performs printing by a serial method, it may perform printing by a line method. Also, the printing method of the printing mechanism 35 is not limited to the inkjet method, and may be, for example, an electrophotographic method, a thermal method, or a dot impact method.

[0017] The door 36 closes the discharge port 312 in a manner that allows it to be opened. By closing the discharge port 312 with the door 36, the intrusion of foreign matter such as dust and dirt into the housing 31 from the discharge port 312 is suppressed. The door 36 includes a first door member 361 and a second door member 362.

[0018] The first door member 361 closes the +Z-direction end of the discharge port 312. On the end of the first door member 361 on the side of the second door member 362, that is, the -Z-direction end of the first door member 361, an inner door recess 361a is provided. In the door recess 361a, a cutter 363 for cutting the roll paper Pr or the cut paper Pc is provided. The door recess 361a and the cutter 363 have a length longer in the X direction than the width of the roll paper Pr or the cut paper Pc with the maximum width.

[0019] The second door member 362 closes the -Z-direction end of the discharge port 312. When the second door member 362 moves in the -Z direction and separates from the first door member 361, the discharge port 312 is opened. On the other hand, when the second door member 362 moves in the +Z direction and comes into contact with the first door member 361, the discharge port 312 is closed.

[0020] Referring to FIG. 3, the configuration of the operation panel 32 will be described. The operation panel 32 includes a resin case 40, a display 60 with a touch panel, and a plurality of mechanical switches SW. The plurality of mechanical switches SW refer to a home switch SW1, a power switch SW2, a forward feed switch SW3, and a reverse feed switch SW4. Also, the mechanical switch SW is a switch different from the touch panel, and refers to a switch that can input a signal when a physical force is applied by being touched by a person and mechanical contacts come into contact.

[0021] The resin case 40 has a first surface 51 that is substantially perpendicular to the Y direction, and a second surface 52 that is formed with a convex portion with a step in the +Y direction from the first surface 51. The second surface 52 is formed such that the step in the -Z direction is larger than the step in the +Z direction so as to face the +Z direction. Thereby, when a user operating the printing apparatus A looks down at the operation panel 32, it is easier to visually recognize the display 60 with a touch panel provided on the second surface 52. Note that the display 60 with a touch panel is also provided in parallel with the second surface 52.

[0022] A first hole portion 41 is formed in a substantially half portion of the second surface 52 in the +Z direction, and a second hole portion 42 smaller than the first hole portion 41 is formed in the -Z direction of the first hole portion 41. A display 60 with a touch panel is provided in the first hole portion 41. The display 60 with a touch panel is an example of a "display". The display 60 with a touch panel is formed by integrally forming an LCD (Liquid Crystal Display) 61 and a capacitive touch panel 62 (see FIG. 6). Note that the display 60 with a touch panel may use an organic EL (Electro-Luminescence) display or a resistive film type touch panel. The display 60 with a touch panel displays various operation screens and is used for a user to perform various operations.

[0023] A home switch SW1 is provided in the second hole portion 42. The home switch SW1 is an example of a "mechanical switch connected to the second substrate via the third wiring". The home switch SW1 is a switch for causing the display 60 with a touch panel to display a home screen. The home screen refers to the first-layer screen when a plurality of hierarchical operation screens are displayed on the display 60 with a touch panel. Information indicating whether the printing apparatus A is in a printable state or information indicating the remaining ink amount for each color is displayed on the home screen. When the home switch SW1 is pressed while a screen other than the home screen is displayed on the display 60 with a touch panel, the printing apparatus A causes the display 60 with a touch panel to display the home screen.

[0024] On the first surface 51, at the -X direction end, a third hole portion 43, a fourth hole portion 44, and a fifth hole portion 45 are formed extending from the +Z direction to the -Z direction. A power switch SW2 is provided in the third hole portion 43. The power switch SW2 is a switch for switching the power state of the printing apparatus A. When the power switch SW2 is pressed while the power of the printing apparatus A is off, the printing apparatus A turns on the power. On the other hand, when the power switch SW2 is pressed while the power of the printing apparatus A is on, the printing apparatus A turns off the power.

[0025] A forward feed switch SW3 is provided in the fourth hole portion 44. The forward feed switch SW3 is a switch for feeding the roll paper Pr or the cut paper Pc in the forward direction, that is, the -Y direction. While the forward feed switch SW3 is pressed, the printing apparatus A feeds the roll paper Pr or the cut paper Pc in the -Y direction. Alternatively, the printing apparatus A may be configured to feed the roll paper Pr or the cut paper Pc in the -Y direction by a certain length when the forward feed switch SW3 is pressed.

[0026] The fifth slot portion 45 is provided with a reverse feed switch SW4. The reverse feed switch SW4 is a switch for feeding the roll paper Pr or the cut paper Pc in the reverse direction, that is, the +Y direction. The printing apparatus A feeds the roll paper Pr or the cut paper Pc in the +Y direction while the reverse feed switch SW4 is being pressed. Alternatively, the printing apparatus A may be configured to feed the roll paper Pr or the cut paper Pc in the +Y direction by a certain length when the reverse feed switch SW4 is pressed.

[0027] Referring to FIGS. 4 and 5, the arrangement of the plurality of substrates B that control the printing apparatus A will be described. In the examples of FIGS. 4 and 5, it is assumed that the plurality of substrates B are all arranged substantially perpendicular to the Y direction. The printing apparatus A includes an operation unit substrate B1, a relay substrate B2, a main substrate B3, and a daughter substrate B4. The operation unit substrate B1 is an example of a "first substrate". Also, the relay substrate B2 is an example of a "second substrate". Also, the main substrate B3 is an example of a "third substrate".

[0028] The operation unit substrate B1, the relay substrate B2, the main substrate B3, and the daughter substrate B4 are different substrates B from each other and are connected via a plurality of inter-substrate wirings W. The plurality of inter-substrate wirings W refer to a first wiring W1, a second wiring W2, and a third wiring W3. The inter-substrate wiring W is, for example, an FFC (Flexible Flat Cable). In FIG. 5, the illustration of the plurality of inter-substrate wirings W and the insulating wall 65 described later is omitted. Also, the operation unit substrate B1, the relay substrate B2, the main substrate B3, and the daughter substrate B4 are all rectangular substrates B.

[0029] The operation unit substrate B1 is a substrate B that controls the display 60 with a touch panel. The operation unit substrate B1 is arranged in the vicinity of the display 60 with a touch panel. More specifically, the operation unit substrate B1 is substantially in the same position as the display 60 with a touch panel in the X direction and the Z direction of the upper housing 31a and is arranged in the +Y direction of the display 60 with a touch panel.

[0030] The relay board B2 is a board B connected to the operation unit board B1, the main board B3, and the daughter board B4. Although details will be described later, the relay board B2 is a board B provided to prevent the home switch SW1 mounted on the daughter board B4 from being directly connected to the operation unit board B1. Thereby, the printing apparatus A suppresses the problem that when a charged person touches the home switch SW1, static electricity flows into the operation unit board B1 and malfunctions the display control circuit 87 and the position detection circuit 88 (both shown in FIG. 6) provided on the operation unit board B1.

[0031] The relay board B2 is connected to the operation unit board B1 via the first wiring W1. The first wiring W1 includes a first signal wiring W1a and a first power wiring W1b (both shown in FIG. 6). The first signal wiring W1a is an example of "the signal line included in the first wiring".

[0032] Also, the relay board B2 is connected to the main board B3 via the second wiring W2. The second wiring W2 includes a second signal wiring W2a and a second power wiring W2b (both shown in FIG. 6). The second signal wiring W2a is an example of "the signal line included in the second wiring". Also, the second power wiring W2b is an example of "the power line included in the second wiring".

[0033] Also, the relay board B2 is connected to the daughter board B4 via the third wiring W3. The third wiring W3 is a wiring including a signal line and a power line. The relay board B2 is arranged in the -X direction from the operation unit board B1 and in the +X direction and +Z direction from the main board B3.

[0034] Note that the above-described first wiring W1, second wiring W2, and third wiring W3 are different wirings from each other. In other words, the first wiring W1, second wiring W2, and third wiring W3 are independent wirings respectively.

[0035] The main board B3 is the board B that controls the entire printing device A. Also, the main board B3 is disposed substantially at the center in the X direction of the upper housing 31a and is disposed in the -Z direction from the relay board B2 in the Z direction. As shown in FIG. 5, the distance L1 between the relay board B2 and the main board B3 is farther than the distance L2 between the relay board B2 and the operation unit board B1.

[0036] Note that the distance between the boards B refers to the distance between the closest points. For example, in the case of the examples in FIGS. 4 and 5, the distance L1 between the relay board B2 and the main board B3 refers to the distance between the -X direction side of the relay board B2 and the +X direction side of the main board B3.

[0037] The sub-board B4 is the board B on which the home switch SW1 is mounted. The sub-board B4 is disposed in the vicinity of the operation unit board B1. More specifically, the sub-board B4 has a smaller board area than the operation unit board B1 and is disposed in the -Z direction at substantially the center in the X direction of the operation unit board B1. As shown in FIG. 5, the distance L3 between the sub-board B4 and the operation unit board B1 is closer than the distance L4 between the sub-board B4 and the relay board B2. Therefore, the distance L5 between the home switch SW1 and the operation unit board B1 is closer than the distance L6 between the home switch SW1 and the relay board B2. Similarly, the distance L7 between the home switch SW1 and the display 60 with a touch panel is closer than the distance L6 between the home switch SW1 and the relay board B2.

[0038] Note that the distance L5 between the home switch SW1 and the operation unit board B1 refers to the distance between the center on the operation surface of the home switch SW1 and the point on the operation unit board B1 closest to the home switch SW1. Also, the distance L7 between the home switch SW1 and the display 60 with a touch panel refers to the distance between the center on the operation surface of the home switch SW1 and the center of the LCD 61 of the display 60 with a touch panel.

[0039] In the examples of FIGS. 4 and 5, although the plurality of substrates B that control the printing apparatus A are all arranged substantially perpendicular to the Y direction, the orientation of the substrate B is arbitrary. Also, for example, a plurality of substrates B may be arranged with a displacement in the Y direction, such as by arranging a daughter substrate B4 between the operation unit substrate B1 and the display 60 with a touch panel in the Y direction.

[0040] Referring to FIG. 6, the configuration of the plurality of substrates B will be described. In FIG. 6, the distances between the plurality of substrates B and the distance between the substrate B and the home switch SW1 are not accurate.

[0041] The main board B3 includes a main board CPU (Central Processing Unit) 71, a ROM (Read Only Memory) 72, a RAM (Random Access Memory) 73, an HDD (Hard Disk Drive) 74, a LAN (Local Area Network) control circuit 75, a conveyance control circuit 76, and a printing control circuit 77.

[0042] The main board CPU 71 receives signals from other substrates B, controls each part of the main board B3, and transmits control signals to other substrates B. Note that, instead of the main board CPU 71, a hardware circuit such as an ASIC (Application Specific Integrated Circuit) may be used as a processor for the main board B3. Also, the processor of the main board B3 may be configured such that one or more CPUs and a hardware circuit such as an ASIC cooperate to operate.

[0043] The ROM 72 stores a non-rewritable control program such as the firmware of the printing apparatus A. The RAM 73 is a work area used by the main board CPU 71 to perform various controls. The HDD 74 stores rewritable data such as the system log of the printing apparatus A.

[0044] The LAN control circuit 75 is connected to the external device 100 via the LAN 105. The LAN control circuit 75 controls communication with the external device 100, such as receiving a print job from the external device 100 or transmitting a response signal to the external device 100.

[0045] The conveyance control circuit 76 controls the conveyance mechanism 34. More specifically, the conveyance control circuit 76 includes a conveyance motor controller that controls the conveyance motor included in the conveyance mechanism 34, and conveys the roll paper Pr or the cut paper Pc in the +Y direction or the -Y direction.

[0046] The print control circuit 77 controls the printing mechanism 35. More specifically, the print control circuit 77 includes a carriage motor controller that controls the carriage motor included in the printing mechanism 35 and a head controller that controls the print head 355, and causes a printing operation of discharging ink onto the roll paper Pr or the cut paper Pc.

[0047] Also, on the main board B3, a main signal connector C3a and a main power connector C3b are mounted along the side of the main board B3 in the +X direction. "A connector is mounted along the side of the board B in the +X direction" means, for example, that the connector is mounted on the edge of the board B in the +X direction.

[0048] The second signal wiring W2a is connected to the main signal connector C3a. Also, the second power wiring W2b is connected to the main power connector C3b. Further, the main board B3 is connected to the frame ground FG.

[0049] The relay board B2 includes a relay board CPU 81. Also, a power switch SW2, a forward feed switch SW3, and a reverse feed switch SW4 are mounted on the relay board B2.

[0050] The CPU 81 for the relay board transmits the operation signals of the power switch SW2, the forward switch SW3, and the reverse switch SW4 to the main board B3, or transmits the operation signal of the home switch SW1 received from the daughter board B4 to the operation unit board B1. Note that the CPU 81 for the relay board may be configured to transmit the operation signal of the home switch SW1 received from the daughter board B4 to the main board B3 instead of the operation unit board B1. In this case, the main board B3 may receive the operation signal of the home switch SW1 and transmit a display command to the operation unit board B1. Further, instead of the CPU 81 for the relay board, a hardware circuit such as an ASIC may be used as a processor in the relay board B2. Further, the processor of the relay board B2 may be configured such that one or more CPUs and a hardware circuit such as an ASIC cooperate to operate.

[0051] Further, on the relay board B2, along the side of the relay board B2 in the +X direction, a first relay signal connector C2a, a first relay power connector C2b, and a relay wiring connector C2c are mounted. The side of the relay board B2 in the +X direction is an example of "the side of the second board in the first direction". Further, the first relay signal connector C2a and the first relay power connector C2b are examples of "the first connector". Further, the relay wiring connector C2c is an example of "the third connector".

[0052] A first signal wiring W1a is connected to the first relay signal connector C2a. Also, a first power wiring W1b is connected to the first relay power connector C2b. Also, a third wiring W3 is connected to the relay wiring connector C2c.

[0053] Further, on the relay board B2, along the side of the relay board B2 in the -X direction, a second relay signal connector C2d and a second relay power connector C2e are mounted. The side of the relay board B2 in the -X direction is an example of "the side of the second board in the second direction". Further, the second relay signal connector C2d and the second relay power connector C2e are examples of "the second connector".

[0054] The second relay signal connector C2d is connected to the second signal wiring W2a. Also, the second relay power connector C2e is connected to the second power wiring W2b.

[0055] Also, on the relay board B2, a signal wiring path 83 that connects the first signal wiring W1a and the second signal wiring W2a, and a power wiring path 84 that connects the second power wiring W2b and the power line included in the third wiring W3 are provided. These signal wiring path 83 and power wiring path 84 are pattern-formed on the relay board B2 so as not to cross each other.

[0056] Note that although other wiring paths other than the signal wiring path 83 and the power wiring path 84 are provided on the relay board B2, illustration thereof is omitted in FIG. 6. Other wiring paths include, for example, a wiring path that connects the first power wiring W1b and the second power wiring W2b, and a wiring path that connects the relay board CPU 81 to the power switch SW2, the forward feed switch SW3, and the reverse feed switch SW4, respectively.

[0057] The operation unit board B1 includes an operation unit board CPU 86, a display control circuit 87, and a position detection circuit 88. The display control circuit 87 includes an LCD controller and controls the LCD 61. Also, the position detection circuit 88 includes a touch panel controller and detects the touch position of the touch panel 62.

[0058] The CPU 86 for the operation unit substrate issues a display command to the display control circuit 87 based on the touch position detection signal of the touch panel 62 detected by the position detection circuit 88. Also, the CPU 86 for the operation unit substrate causes the display control circuit 87 to display the home screen based on the operation signal of the home switch SW1 received from the daughter substrate B4 via the relay substrate B2. Further, the CPU 86 for the operation unit substrate transmits an operation signal toward the main substrate B3 based on the touch position detection signal of the touch panel 62 detected by the position detection circuit 88. Note that, instead of the CPU 86 for the operation unit substrate, a hardware circuit such as an ASIC may be used as a processor for the operation unit substrate B1. Also, the processor of the operation unit substrate B1 may be configured such that one or more CPUs and a hardware circuit such as an ASIC cooperate to operate.

[0059] Also, on the operation unit substrate B1, an operation unit signal connector C1a and an operation unit power connector C1b are mounted along the -X direction side of the operation unit substrate B1.

[0060] A first signal wiring W1a is connected to the operation unit signal connector C1a. Also, a first power wiring W1b is connected to the operation unit power connector C1b.

[0061] A home switch SW1 is provided on the daughter substrate B4. "Provided on the daughter substrate B4" means being connected to the daughter substrate B4 without passing through the inter-board wiring W. Also, a third wiring W3 is directly connected to the daughter substrate B4 without passing through a connector.

[0062] Also, an insulating wall 65 is provided between the daughter substrate B4 and the operation unit substrate B1, that is, between the home switch SW1 and the operation unit substrate B1. The insulating wall 65 is a partition member made of an insulating material such as phenolic resin. This insulating wall 65 is located between the home switch SW1 and the display 60 with a touch panel. The printing apparatus A suppresses static electricity from flowing into the operation unit substrate B1 when a charged person touches the home switch SW1 by providing this insulating wall 65.

[0063] As described above, in the printing apparatus A according to the present embodiment, the distance between the operation unit substrate B1 on which the display control circuit 87 is mounted and the home switch SW1 which is a mechanical switch is closer than the distance between the home switch SW1 and the relay substrate B2. In this configuration, the home switch SW1 is connected to the relay substrate B2 and is not directly connected to the operation unit substrate B1. Therefore, the printing apparatus A can suppress the problem that a charged person touches the home switch SW1 and causes the display control circuit 87 to malfunction. In other words, even if static electricity flowing from a person moves to the relay substrate B2 when a person touches the home switch SW1, the printing apparatus A can suppress the influence on the display control circuit 87 mounted on the operation unit substrate B1 and the display 60 with a touch panel. Further, since the main substrate B3 is connected to the frame ground FG, most of the static electricity that has moved to the relay substrate B2 propagates to the frame ground FG via the main substrate B3, and the influence of the static electricity on the display control circuit 87 and the display 60 with a touch panel can be further suppressed.

[0064] Also, in the printing apparatus A according to the present embodiment, the distance between the display 60 with a touch panel provided near the operation unit substrate B1 on which the display control circuit 87 is mounted and the home switch SW1 which is a mechanical switch is closer than the distance between the home switch SW1 and the relay substrate B2. Even in this configuration, the above-described effects can be achieved.

[0065] Further, in the relay substrate B2 of the printing apparatus A, the signal wiring path 83 and the power wiring path 84 are pattern-formed so as not to cross each other. Therefore, the printing apparatus A can further suppress the influence on the display control circuit 87 and the display 60 with a touch panel due to static electricity flowing through the signal wiring path 83.

[0066] In addition, the printing apparatus A mounts a first relay signal connector C2a, a first relay power connector C2b, and a relay wiring connector C2c along the +X-direction side of the relay substrate B2, and mounts a second relay signal connector C2d and a second relay power connector C2e along the -X-direction side of the relay substrate B2. Therefore, the printing apparatus A can suppress the complication of the inter-board wiring W when the first wiring W1 and the second wiring W2, or the third wiring W3 and the second wiring W2 cross each other.

[0067] In addition, an insulating wall 65 is provided between the home switch SW1 and the operation unit substrate B1 of the printing apparatus A. Therefore, the printing apparatus A can improve the effect of suppressing the display disturbance of the display 60 with a touch panel caused by a charged person touching the home switch SW1.

[0068] In addition, an insulating wall 65 is provided between the home switch SW1 and the display 60 with a touch panel of the printing apparatus A. Therefore, the printing apparatus A can improve the effect of suppressing the display disturbance of the display 60 with a touch panel caused by a charged person touching the home switch SW1.

[0069] In addition, the printing apparatus A provides the display 60 with a touch panel and the home switch SW1 in different hole portions of a resin case 40 that constitutes the operation panel 32. Therefore, the printing apparatus A can improve the effect of suppressing the display disturbance of the display 60 with a touch panel caused by a charged person touching the home switch SW1.

[0070] In addition, the printing apparatus A provides the display 60 with a touch panel and the home switch SW1 on the same surface of the resin case 40. Therefore, the printing apparatus A can improve the operability of the user.

[0071] In addition, the printing apparatus A mounts the home switch SW1 on the daughter substrate B4. Therefore, the printing apparatus A can suppress the display disturbance of the display 60 caused by static electricity even when the home switch SW1 that changes the display of the display 60 is operated.

[0072] In addition, the printing apparatus A is equipped with a position detection circuit 88 on the operation unit substrate B1 for detecting the touch position of the touch panel 62 of the display 60 with a touch panel. Therefore, the printing apparatus A can suppress the problem that the position detection circuit 88 malfunctions when a charged person touches the home switch SW1.

[0073] Note that, regardless of the above-described embodiment, the following modification examples can be adopted. [Modification Example 1] The printing apparatus A may mount, on the daughter substrate B4, a switch for displaying a specific screen other than the home screen as a mechanical switch SW. For example, the printing apparatus A may mount, on the daughter substrate B4, a switch for displaying an ink remaining amount screen that displays detailed ink remaining amounts by color.

[0074] In addition, the printing apparatus A may mount, on the daughter substrate B4, a switch for changing the display of the display 60 with a touch panel other than the switch for displaying a specific screen. For example, the printing apparatus A may mount, on the daughter substrate B4, a switch for switching the on / off of the display of the display 60 with a touch panel or a switch for scrolling the screen.

[0075] In addition, the printing apparatus A may mount the power switch SW2, the forward feed switch SW3, or the reverse feed switch SW4 on the daughter substrate B4. Additionally, the printing apparatus A may mount a mechanical switch SW for a person to perform some operation on the printing apparatus A on the daughter substrate B4.

[0076] Also, the mechanical switch SW may have a structure in which static electricity easily circulates, such as a continuous space from the touched position in the touched state by a person to the contact point. That is, a space may be provided between the mechanical switch SW and the resin case 40, and along the mechanical switch SW, a structure may be provided in which static electricity circulates from the front surface, which is the operation surface of the mechanical switch SW, to the back contact point. On the premise of this structure, the effect of suppressing display disturbance of the display 60 with a touch panel when the mechanical switch SW is touched by adopting this embodiment becomes greater.

[0077] [Modification Example 2] The operation unit substrate B1 and the relay substrate B2 of the printing device A may be connected via a substrate B different from both the main substrate B3 and the sub-substrate B4. Similarly, the relay substrate B2 and the main substrate B3 may be connected via a substrate B different from both the operation unit substrate B1 and the sub-substrate B4. Similarly, the relay substrate B2 and the sub-substrate B4 may be connected via a substrate B different from both the operation unit substrate B1 and the main substrate B3.

[0078] [Modification Example 3] In the above embodiment, a large-format printer was exemplified as the printing device A, but the above embodiment may also be applied to a printer that does not perform large-size printing, such as a home printer. Further, the above embodiment is applicable not only to the printing device A but also to an electronic device provided with a display 60 and a mechanical switch SW. Examples of the electronic device include a multifunction device, a projector, a kiosk terminal, and an automatic ticket vending machine. In addition, within the scope not departing from the gist of the present invention, appropriate changes can be made.

[0079] [Supplementary Note] Hereinafter, a printing device will be appended. The printing apparatus A includes a printing mechanism 35, a display 60, an operation unit substrate B1 connected to the display 60 and equipped with a display control circuit 87 for controlling the display 60, a relay substrate B2 different from the operation unit substrate B1 and connected to the operation unit substrate B1 via a first wiring W1, a main substrate B3 different from both the operation unit substrate B1 and the relay substrate B2 and connected to the relay substrate B2 via a second wiring W2 different from the first wiring W1 and equipped with a printing control circuit 77 for controlling the printing mechanism 35, and a mechanical switch SW connected to the relay substrate B2 via a third wiring W3 different from both the first wiring W1 and the second wiring W2 without passing through either the operation unit substrate B1 or the main substrate B3. The distance between the mechanical switch SW and the operation unit substrate B1 is closer than the distance between the mechanical switch SW and the relay substrate B2.

[0080] According to this configuration, in the printing apparatus A, when the distance between the operation unit substrate B1 equipped with the display control circuit 87 and the mechanical switch SW is closer than the distance between the mechanical switch SW and the relay substrate B2, the mechanical switch SW is connected to the relay substrate B2 and is not directly connected to the operation unit substrate B1. Therefore, the printing apparatus A can suppress the problem that static electricity flows into the operation unit substrate B1 when a charged person touches the mechanical switch SW, disturbing the display on the display 60.

[0081] The printing apparatus A includes a printing mechanism 35, a display 60, an operation unit substrate B1 connected to the display 60 and equipped with a display control circuit 87 for controlling the display 60, a relay substrate B2 different from the operation unit substrate B1 and connected to the operation unit substrate B1 via a first wiring W1, a main substrate B3 different from both the operation unit substrate B1 and the relay substrate B2 and connected to the relay substrate B2 via a second wiring W2 different from the first wiring W1 and equipped with a printing control circuit 77 for controlling the printing mechanism 35, and a mechanical switch SW connected to the relay substrate B2 via a third wiring W3 different from both the first wiring W1 and the second wiring W2 without passing through either the operation unit substrate B1 or the main substrate B3. The distance between the mechanical switch SW and the display 60 is closer than the distance between the mechanical switch SW and the relay substrate B2.

[0082] According to this configuration, in the printing apparatus A, when the distance between the display 60 provided near the operation unit substrate B1 on which the display control circuit 87 is mounted and the mechanical switch SW is closer than the distance between the mechanical switch SW and the relay substrate B2, the mechanical switch SW is connected to the relay substrate B2 and is not directly connected to the operation unit substrate B1. Therefore, the printing apparatus A can suppress the problem that static electricity flows into the operation unit substrate B1 when a charged person touches the mechanical switch SW, disturbing the display of the display 60.

[0083] In the above-described printing apparatus A, on the relay substrate B2, a signal wiring path 83 that connects a signal line included in the first wiring W1 and a signal line included in the second wiring W2, and a power wiring path 84 that connects a power line included in the second wiring W2 and a power line included in the third wiring W3 are provided. In the relay substrate B2, it is preferable that the signal wiring path 83 and the power wiring path 84 do not cross each other.

[0084] According to this configuration, in the printing apparatus A, a wiring path that connects a signal line included in the first wiring W1 and a signal line included in the second wiring W2, and a wiring path that connects a power line included in the second wiring W2 and a power line included in the third wiring W3 do not cross each other. Therefore, the printing apparatus A can further suppress the display disturbance of the display 60 caused by static electricity flowing through the signal wiring path 83.

[0085] In the above-described printing apparatus A, the relay substrate B2 is a rectangular substrate B. Along the side of the relay substrate B2 in the first direction, a first relay signal connector C2a and a first relay power connector C2b to which the first wiring W1 is connected, and a relay wiring connector C2c to which the third wiring W3 is connected are mounted. Along the side of the relay substrate B2 in the second direction opposite to the first direction, it is preferable that a second relay signal connector C2d and a second relay power connector C2e to which the second wiring W2 is connected are mounted.

[0086] According to this configuration, when the relay board B2 is arranged between the operation unit board B1 and the main board B3 in the printing apparatus A, it is possible to suppress the complication of the inter-board wiring due to the intersection of the first wiring W1 and the second wiring W2, or the third wiring W3 and the second wiring W2.

[0087] In the above printing apparatus A, it is preferable that an insulating wall 65 is provided between the mechanical switch SW and the operation unit board B1.

[0088] According to this configuration, since the insulating wall 65 is provided between the mechanical switch SW and the operation unit board B1 in the printing apparatus A, it is possible to improve the effect of suppressing the display disturbance of the display 60 caused by a charged person touching the mechanical switch SW.

[0089] In the above printing apparatus A, it is preferable that an insulating wall 65 is provided between the mechanical switch SW and the display 60.

[0090] According to this configuration, since the insulating wall 65 is provided between the mechanical switch SW and the display 60 in the printing apparatus A, it is possible to improve the effect of suppressing the display disturbance of the display 60 caused by a charged person touching the mechanical switch SW.

[0091] In the above printing apparatus A, it is preferable that a resin case 40 is further provided, and the resin case 40 includes a first hole 41 provided with the display 60 and a second hole 42 provided with the mechanical switch SW, which is different from the first hole 41.

[0092] According to this configuration, since the display 60 and the mechanical switch SW are provided in different holes of the resin case 40, it is possible to improve the effect of suppressing the display disturbance of the display 60 caused by a charged person touching the mechanical switch SW.

[0093] In the above printing apparatus A, it is preferable that the resin case 40 includes the first hole 41 and the second hole 42 on the same surface.

[0094] According to this configuration, in the printing apparatus A, since the display 60 and the mechanical switch SW are provided on the same surface of the resin case 40, the operability of the user can be improved.

[0095] In the above printing apparatus A, the mechanical switch SW is preferably a switch for changing the display of the display 60.

[0096] According to this configuration, the printing apparatus A can suppress display disturbance of the display 60 due to static electricity even when a switch for changing the display of the display 60 is operated.

[0097] In the above printing apparatus A, the display 60 is preferably a display 60 with a touch panel, and the operation unit substrate B1 is preferably equipped with a position detection circuit 88 for detecting the touch position of the touch panel 62 of the display 60 with a touch panel.

[0098] According to this configuration, the printing apparatus A can suppress the problem of malfunctioning the position detection circuit 88 when a charged person touches the mechanical switch SW.

Explanation of Reference Numerals

[0099] 60... Display with touch panel, 77... Printing control circuit, 87... Display control circuit, A... Printing apparatus, B1... Operation unit substrate, B2... Relay substrate, B3... Main substrate, SW1... Home switch, W1... First wiring, W2... Second wiring, W3... Third wiring.

Claims

1. A printing mechanism, a display, a first substrate connected to the display and equipped with a display control circuit for controlling the display, a second substrate different from the first substrate and connected to the first substrate via a first wiring, a third substrate different from both the first substrate and the second substrate and connected to the second substrate via a second wiring different from the first wiring and equipped with a printing control circuit for controlling the printing mechanism, a mechanical switch connected to the second substrate via a third wiring different from both the first wiring and the second wiring, wherein the distance between the mechanical switch and the first substrate is closer than the distance between the mechanical switch and the second substrate, wherein the second substrate is provided with a signal wiring path connecting a signal line included in the first wiring and a signal line included in the second wiring, and a power wiring path connecting a power line included in the second wiring and a power line included in the third wiring, and in the second substrate, the signal wiring path and the power wiring path do not intersect, characterized by a printing apparatus.

2. A printing mechanism, a display, a first substrate connected to the display and equipped with a display control circuit for controlling the display, a second substrate different from the first substrate and connected to the first substrate via a first wiring, a third substrate different from both the first substrate and the second substrate and connected to the second substrate via a second wiring different from the first wiring and equipped with a printing control circuit for controlling the printing mechanism, a mechanical switch connected to the second substrate via a third wiring different from both the first wiring and the second wiring, wherein the distance between the mechanical switch and the display is closer than the distance between the mechanical switch and the second substrate, wherein the second substrate is provided with a signal wiring path connecting a signal line included in the first wiring and a signal line included in the second wiring, and a power wiring path connecting a power line included in the second wiring and a power line included in the third wiring, and in the second substrate, the signal wiring path and the power wiring path do not intersect, characterized by a printing apparatus.

3. The second substrate is a rectangular substrate, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Along the side of the second substrate in the first direction, a first connector to which the first wiring is connected and a third connector to which the third wiring is connected are mounted, and the second substrate is in the first direction Along the side in the second direction opposite to the direction, a second connector to which the second wiring is connected is mounted The printing apparatus according to claim 1 or 2, characterized in that

4. A printing mechanism, A display, A first substrate connected to the display and having a display control circuit for controlling the display mounted thereon 1 substrate, A second substrate different from the first substrate, connected to the first substrate via a first wiring, A printing control circuit for controlling the printing mechanism, connected to the second substrate via a second wiring different from the first wiring, mounted on a third substrate different from both the first substrate and the second substrate 3 substrates, A mechanical switch connected to the second substrate via a third wiring different from both the first wiring and the second wiring without passing through either the first substrate or the third substrate And, The distance between the mechanical switch and the first substrate is closer than the distance between the mechanical switch and the second substrate, and an insulating wall is provided between the mechanical switch and the first substrate Characterized in that it is characterized in that The printing apparatus according to claim 17, characterized in that

5. A printing mechanism, A display, A first substrate connected to the display and having a display control circuit for controlling the display mounted thereon 1 substrate, A second substrate different from the first substrate, connected to the first substrate via a first wiring, A printing control circuit for controlling the printing mechanism, connected to the second substrate via a second wiring different from the first wiring, mounted on a third substrate different from both the first substrate and the second substrate 3 substrates, A mechanical switch connected to the second substrate via a third wiring different from both the first wiring and the second wiring without passing through either the first substrate or the third substrate And, The distance between the mechanical switch and the display is closer than the distance between the mechanical switch and the second substrate, and an insulating wall is provided between the mechanical switch and the first substrate Characterized in that it is characterized in that The printing apparatus according to claim 31, characterized in that

6. An insulating wall is provided between the mechanical switch and the display, characterized in that The printing apparatus according to any one of claims 1 to 3, characterized in that

7. Further comprising a resin case, ​ ​ ​ ​ The resin case includes a first hole portion where the display is provided and a second hole portion different from the first hole portion where the mechanical switch is provided, and is characterized by the printing apparatus according to any one of claims 1 to 6.

8. The resin case is characterized in that the first hole portion and the second hole portion are provided on the same surface, and is the printing apparatus according to claim 7.

9. The mechanical switch is a switch for changing the display of the display, and is characterized by the printing apparatus according to any one of claims 1 to 8.

10. The display is a display with a touch panel, and on the first substrate, a position detection circuit for detecting the touch position of the touch panel of the display with the touch panel is mounted, and is characterized by the printing apparatus according to any one of claims 1 to 9. ​ ​ ​

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