Image forming apparatus and substrate

Abstract

To improve workability and visibility when inserting a cable into a connector mounted in a substrate and prevent a defective assembly.SOLUTION: An image forming apparatus includes: a first substrate on which a connector for connecting a first cable is mounted; a second substrate on which a first connector for connecting the first cable connected to the connector of the first substrate and a second connector for connecting a second cable are mounted and which is mounted in a direction forming a vertical angle with a surface of the first substrate with respect to the image forming apparatus; and a load component which has a second cable connected to the second connector, is arranged in a direction forming a vertical angle with the surface of the first substrate with respect to the image forming apparatus and is connected to the second substrate by the second cable. In the first connector, a connection port for connecting the first cable is mounted in the same direction as that of the connector mounted in the first substrate. In the second connector, a connection port for connecting the second cable is mounted in a direction different from that of the first connector.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to an electrophotographic image forming apparatus, such as a copying machine or a printer, that is provided with a board to which cables for transmitting power and signals are connected. [Background technology]

[0002] Image forming devices such as copiers and printers include load components such as motors, sub-boards that drive the load components, and control boards that control the load components, sub-boards, etc. The control boards and the load components, or the control boards and the sub-boards, are connected by a power line for supplying a power supply voltage, a ground line (hereinafter referred to as a GND line), and a bundle of signal lines (cables) for transmitting signals.

[0003] When the length of the bundled wires is long, or when you want to consolidate power lines and GND lines to reduce the number of wires, an intermediate board may be installed between the control board and the load components or between the control board and the sub-board.

[0004] The control board is placed on the rear side of the image forming device, while the load components, sub-boards, and relay boards are sometimes placed on the side other than the rear side of the image forming device. Connectors for connecting cables such as power lines, signal lines, and cable bundles are also mounted on the boards.

[0005] Patent Document 1 discloses a configuration of an information processing device in which a connector connection part for connecting a cable is supported so as to be selectively rotatable sideways or downward with respect to an outer peripheral wall of the device. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2002-041186 A Summary of the Invention [Problem to be solved by the invention]

[0007] However, the connectors mounted on the board are generally called vertical mating connectors (straight type), although they are called different names depending on the manufacturer, such as pin headers or post headers. A vertical mating connector (straight type) is a connector in which the socket on the bundle side approaches and fits vertically to the surface of the board.

[0008] In the assembly process for an image forming device having such a configuration, the relay board arranged on the side of the device has bundled wires from the control board arranged on the back of the device and bundled wires from the load components and sub-boards arranged on the side of the device connected to connectors on the relay board.

[0009] For example, if the vertical mating connectors are used for all connectors mounted on the relay board, when connecting a load component or a bundle of wires from a sub-board arranged on the side of the device, the cable can be inserted straight into the connector on the relay board in a direction perpendicular to the surface of the relay board by approaching from the side of the device.

[0010] On the other hand, when connecting a relay board arranged on the side of a device to a control board arranged on the back of the device, it is sufficient to approach from the back of the device and insert the cable straight into the connector on the control board in a direction perpendicular to the surface of the control board. However, if the connector on the relay board is approached from the back of the device, workability and visibility may be poor, which may result in assembly failure. In order to insert the cable straight into the connector on the relay board in a direction perpendicular to the surface of the control board, it is necessary to go around from the back of the device to the side of the device and approach from the side of the device, which reduces workability.

[0011] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to improve the workability and visibility when inserting a cable into a connector mounted on a board, thereby preventing assembly defects. [Means for solving the problem]

[0012] A representative configuration of the present invention for achieving the above-mentioned object includes a first board for controlling an image forming device, the first board having a connector for connecting a first cable mounted thereon and attached to the image forming device; a second board having a first connector for connecting a first cable connected to the connector of the first board and a second connector for connecting a second cable mounted thereon and attached in an orientation that forms an angle perpendicular to the surface of the first board with respect to the image forming device; and a load component having the second cable connected to the second connector, arranged in an orientation that forms an angle perpendicular to the surface of the first board with respect to the image forming device, and connected to the second board by the second cable, the first connector being mounted such that a connection port for connecting the first cable is oriented in the same direction as the connection port of the connector mounted on the first board, and the second connector being mounted such that a connection port for connecting the second cable is oriented differently from the connection port of the first connector. Effect of the Invention

[0013] According to the present invention, the workability and visibility when inserting a cable into a connector mounted on a board can be improved, and assembly defects can be prevented. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a schematic cross-sectional view showing a configuration of an image forming apparatus. [Diagram 2] A block diagram showing an example of the connection configuration of the board, load components, and cables of an image forming apparatus. [Diagram 3] FIG. 1 is a perspective view of an image forming apparatus according to a first embodiment, seen from the right rear side; [Figure 4] FIG. 1 is a diagram showing the layout of a circuit board and cables in an image forming apparatus according to a first embodiment of the present invention; [Diagram 5] FIG. 1 is a diagram showing the layout of a circuit board and cables in an image forming apparatus according to a second embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the dimensions, materials, shapes, and relative positions of the components described in the following embodiments can be appropriately modified or changed, and the scope of the present invention is not limited to these.

[0016] Example 1 <Image forming device> First, the configuration of an image forming apparatus according to a first embodiment of the present invention will be described with reference to Fig. 1. Fig. 1 is a schematic cross-sectional view showing the configuration of an image forming apparatus according to the first embodiment.

[0017] The image forming apparatus 100 is an apparatus that forms and outputs an image on a recording material S in accordance with image data received from an external source via a network. The image forming apparatus 100 includes a document reading unit 101, an automatic document feeder (hereinafter, ADF) 102, a manual feed unit (multi-feed unit) 103, and a right door unit 104.

[0018] Original reading unit 101 optically reads sheet-like originals with a sensor (CIS or CCD) not shown, converts the image signals, and sends the images to control board 150. ADF 102 continuously feeds multiple sheet-like originals to original reading unit 101. Manual feed unit (multi-feed unit) 103 is a multi-feed unit that manually feeds recording material S that is used less frequently, such as postcards, envelopes, and colored paper, and can be folded in the direction of arrow A1 when not in use.

[0019] The right door unit 104 is connected to the lower side of the main body of the image forming apparatus 100 by a hinge so as to be rotatable (openable and closable), and can be opened in the direction of arrow A2 around point P as an axis during jam clearance or maintenance. The right door unit 104 is a conveying unit for conveying the recording material S, which has been switched back by the conveying roller 19 and the reversing roller 20, to the pair of registration rollers 15 and 16 during double-sided printing in which images are formed on the front and back sides (both sides) of the recording material S. The right door unit 104 includes a plurality of double-sided conveying rollers 104a for conveying the switched-back recording material S to the pair of registration rollers 15 and 16, and a double-sided conveying path 104b for guiding the recording material S. The right door unit 104 also includes a manual feed roller 103a for feeding the recording material S in the manual feed section 103. The right door unit 104 also includes a registration roller 16, which is one of the pair of rollers, and a secondary transfer outer roller 17. Therefore, when the right door unit 104 is opened in the direction of the arrow A2, the outer secondary transfer roller 17 is separated from the inner secondary transfer roller 7, and the registration roller 16 is separated from the registration roller 15.

[0020] Next, the image forming operation of the image forming apparatus 100 will be described.

[0021] First, toner images are formed on the photosensitive drums 1Y, 1M, 1C, and 1K based on image data. The toner images are formed separately for yellow (Y), magenta (M), cyan (C), and black (K), but the method of forming each color toner image is essentially the same except for the difference in color. Therefore, the following describes the method of forming a yellow (Y) toner image, and the formation of magenta (M), cyan (C), and black (K) toner images will be described by replacing the suffix Y of the reference numerals of the components in the description with M, C, and K.

[0022] A yellow (Y) toner image is formed by a photosensitive drum 1Y, a charger 2Y, a laser scanner 3Y, a developing unit 4Y, and a primary transfer roller 5Y.

[0023] First, the surface of the rotating photosensitive drum 1Y is uniformly charged by the charger 2Y. Next, an image signal generated based on image data is input to the laser scanner 3Y. The laser scanner 3Y includes a semiconductor laser and a polygon mirror, and outputs a laser beam modulated by the input image signal from the semiconductor laser. The laser beam output from the semiconductor laser is irradiated onto the surface of the photosensitive drum 1Y via the polygon mirror and the mirror, thereby exposing the photosensitive drum 1Y. The photosensitive drum 1Y, the surface of which is uniformly charged by the charger 2Y, is exposed to the laser beam, thereby forming an electrostatic latent image on the photosensitive drum 1Y. The electrostatic latent image formed on the photosensitive drum 1Y is developed with toner supplied from the developer 4Y, thereby forming a yellow toner image on the photosensitive drum 1Y. The toner image on the photosensitive drum 1Y moves to a primary transfer position facing the primary transfer roller 5Y as the photosensitive drum 1Y rotates. A primary transfer bias of the opposite polarity to the charging polarity of the toner is applied to the primary transfer roller 5Y by a bias voltage supply means (not shown), and this primary transfer bias transfers the toner image formed on the photosensitive drum 1Y onto the intermediate transfer belt 6.

[0024] The above toner image formation is also performed for magenta (M), cyan (C), and black (K). A full-color toner image is formed by sequentially transferring the toner images of each color onto the intermediate transfer belt 6. The full-color toner image is moved to the inner secondary transfer roller 7 by the transport of the intermediate transfer belt 6.

[0025] Meanwhile, the recording material S stored in the cassette 9 is fed onto the recording material conveying path by a feeding roller 10, and is conveyed toward a pair of registration rollers 15, 16 by pairs of conveying rollers 11, 12 and pairs of conveying rollers 13, 14. Then, the recording material S is conveyed to a secondary transfer position 2T by the pair of registration rollers 15, 16 in synchronization with the toner image that moves in association with the conveyance of the intermediate transfer belt 6.

[0026] At the secondary transfer position 2T, a bias voltage is applied to the secondary transfer outer roller 17, and the toner image on the intermediate transfer belt 6 is transferred from the intermediate transfer belt 6 to the recording material S by the bias voltage. The recording material S to which the toner image has been transferred is transported to a fixing device 18. The toner image transferred to the recording material S is fixed to the recording material S by heat and pressure in the fixing device 18.

[0027] The recording material S that has passed through the fixing device 18 is discharged onto the internal discharge tray 22 by the discharge roller 21 in the case of single-sided printing. In the case of double-sided printing, after the toner image on the front side is fixed, the recording material S is discharged partway onto the internal discharge tray 22 by the conveying roller 19 and the reversing roller 20, and is temporarily stopped in a state in which the vicinity of the rear end of the recording material S is held by the reversing roller 20. Then, the reversing roller 20 is rotated in the reverse direction to convey the recording material S that it holds to the double-sided conveying path 104b, and is conveyed to the pair of registration rollers 15, 16 by the multiple double-sided conveying rollers 104a. After that, an image is formed on the back side of the recording material S, and the recording material S is discharged onto the internal discharge tray 22 by the discharge roller 21. In this manner, the image is formed on the recording material.

[0028] The image forming apparatus 100 shown in FIG. 1 is a view of the image forming apparatus 100 seen from the front side (near side or front side). This is defined as the front side of the image forming apparatus 100. On the other hand, when the front side of the image forming apparatus 100 shown in FIG. 1 is taken as a reference, the opposite side to the front side of the image forming apparatus 100 is defined as the rear side (rear side or back side) of the image forming apparatus 100. In addition, in the image forming apparatus 100 shown in FIG. 1, when the photosensitive drum 1K on which the electrostatic latent image of the black toner image is formed is taken as a reference, the side on which the photosensitive drum 1Y on which the electrostatic latent image of the yellow toner image is formed is disposed is defined as the left side. When the photosensitive drum 1Y on which the electrostatic latent image of the yellow toner image is formed is taken as a reference, the side on which the photosensitive drum 1K on which the electrostatic latent image of the black toner image is formed is defined as the right side. Furthermore, the vertical upward direction perpendicular to the front-rear direction and the left-right direction defined here is defined as the up direction, and the vertical downward direction perpendicular to the front-rear direction and the left-right direction defined here is defined as the down direction. The defined forward direction F, backward direction B, right direction R, left direction L, upward direction U, and downward direction D are shown in Figures 1, 3, etc.

[0029] <Image forming device parts / connection configuration> Next, the components / connections of the image forming apparatus will be described. Fig. 2 is a block diagram showing an example of the connection configuration of the boards, load components, and cables of the image forming apparatus 100. Fig. 3 is a perspective view of the image forming apparatus 100 as seen from the right rear.

[0030] The image forming apparatus 100 includes a control board 150 which is a first board, a relay board 204 which is a second board, and a right door unit 104 which is a unit incorporating a motor and the like which are load components.

[0031] The control board 150 is the first board that controls the image forming apparatus 100, that is, the board for performing the series of image forming operations described above. The control board 150 is connected to a high-voltage board 151 that supplies high voltage to the photosensitive drums 1Y-1K, the chargers 2Y-2K, the developing devices 4Y-4K, etc., via a cable hnsA. The control board 150 is connected to a power supply board 152 that supplies a power supply voltage required for operation, via a cable hnsB. The control board 150 is connected to a plurality of motors M1-Mn that rotate the photosensitive drums 1Y-1K, the developing devices 4Y-4K, the intermediate transfer belt 6, etc., via cable hnsC-hnsE, respectively. The control board 150 is connected to a plurality of sensors SNS1-SNSn that detect the passing timing of the recording material S, etc., via cable hnsF-hnsH, respectively.

[0032] Further, a plurality of connectors 150a for respectively connecting the bundled wires hns204 to hns205 which are the first cables are mounted on the control board 150. The control board 150 is attached to the image forming apparatus 100, specifically, attached to the rear side of the image forming apparatus 100 as shown in FIG.

[0033] Relay board 204 is attached to image forming apparatus 100 in a direction that forms an angle perpendicular to the surface of control board 150. Specifically, as shown in Fig. 3, relay board 204 is attached to the right side of image forming apparatus 100 in a direction that forms an angle perpendicular to the surface of control board 150 attached to the rear side of image forming apparatus 100.

[0034] A first connector 204b and a second connector 204a are mounted on the relay board 204. The first connector 204b connects bundled wires hns204 to hns206, which are a first cable connected to the connector 150a of the control board 150. The second connector 204a connects bundled wires hns201 to hns203, which are a second cable different from the first cable.

[0035] 3, the first connector 204b is mounted so that the connection ports for connecting the bundled wires hns204 to hns206 face the same direction as the connection ports of the connector 150a mounted on the control board 150. In other words, the first connector 204b is mounted so that the connection ports for connecting the bundled wires hns204 to hns206 face a horizontal angle with respect to the surface of the relay board 204.

[0036] On the other hand, the second connector 204a is mounted such that the connection ports for connecting the bundle wires hns201 to hns203 are oriented in a different direction from the connection ports of the first connector 204b. In other words, the second connector 204a is mounted such that the connection ports for connecting the bundle wires hns201 to hns203 are oriented at an angle perpendicular to the surface of the relay board 204.

[0037] The relay board 204 uses, as the first connector 204b, a connector of a type in which the connection port faces the rear side of the image forming apparatus, a connector of a shape called a horizontal mating connector (right angle type), and uses, as the second connector 204a, a connector of a type in which the connection port faces the right side of the image forming apparatus, a connector of a shape called a vertical mating connector (straight type).

[0038] Here, a connector with a shape called a vertical mating connector (straight type) is a connector with a shape in which the socket on the bundle side approaches and fits vertically to the surface of the board, whereas a connector with a shape called a horizontal mating connector (right angle type) is a connector with a shape in which the socket on the bundle side approaches and fits horizontally to the surface of the board.

[0039] The relay board 204 is disposed between the control board 150 and the right door unit 104 in which load components are built, and is an relay board for connecting the control board 150 and the load components built into the right door unit 104.

[0040] The right door unit 104 incorporates a drive source, detection means, sub-board, and the like, which serve as load components, as described below.

[0041] Specifically, motors M201 and M202 serving as drive sources for rotating a double-sided conveying roller 104a, which is a rotating body that conveys a recording material S, which is a sheet, are attached inside the right door unit 104. Sensors SNS201 to SNS203 serving as detection means for detecting the timing at which the recording material S passes through the double-sided conveying path 104b are attached inside the right door unit 104.

[0042] Also attached inside the right door unit 104 are a motor M203 which is a drive source for rotating a manual feed roller 103a which is a rotating body that feeds the recording material S from the manual feed portion 103, and a sub-board 205 which includes a circuit for driving the motor M203. The sub-board 205 is a sub-board for connecting the motor M203 and the relay board 204. Attached inside the right door unit 104 is a sensor SNS204 which detects that the recording material S has been placed on the manual feed portion 103. The motor M203 and the sensor SNS204 are connected to the sub-board 205 by a bundled wire.

[0043] The right door unit 104 has the cables hns201 to hns203 which are the second cables connected to a second connector mounted on the relay board 204. The cable hns201 is connected to a sub-board 205 which is a load component. The cable hns202 is connected to motors M201 and M202 and a sensor SNS201. The cable hns203 is connected to sensors 202 and 203. As shown in FIG. 3, the cables hns201 to hns203 are led out of the unit from a cable passage opening 301 located at the bottom on the far side of the right door unit 104.

[0044] 3, the right door unit 104 is disposed in a direction that forms a vertical angle with respect to the surface of the control board 150 with respect to the image forming apparatus 100. More specifically, the right door unit 104 is attached to the right side of the image forming apparatus 100, in a direction that forms a vertical angle with the surface of the control board 150 attached to the rear side of the image forming apparatus 100.

[0045] Fig. 4 is a configuration diagram of the boards and cables in the image forming apparatus according to the embodiment 1. In detail, Fig. 4 is a top view of the relay board 204, the right door unit 104 and the cables hns201-hns203, the control board 150, and the cables hns204-hns206 connecting the relay board 204 and the control board 150, as viewed from the top side of the apparatus. Here, among the cables hns204-hns206, the cable hns204 is a cable (cable) including a power line for supplying power and a ground line (GND line) for grounding to the ground.

[0046] In addition, the high-voltage board 151, the power supply board 152, the motor group consisting of multiple motors M1 to Mn, the sensor group consisting of multiple sensors SNS1 to SNSn, and the bundled wire group consisting of bundled wires hnsA to hnsH shown in Figure 2 are not directly connected to the relay board 204, so they are omitted here.

[0047] In FIG. 4, the right side is the rear side of the image forming apparatus 100, and the lower side is the right side of the image forming apparatus 100. A frame 401 constituting the housing of the image forming apparatus 100 is a part of the image forming apparatus 100, and is generally formed of a plate-shaped metal material (hereinafter, sheet metal). The frame 401 illustrated here has an end bent into an L-shape. The image forming apparatus is formed by assembling boards, motors, and various units to the frame 401 formed of sheet metal. In this embodiment, the control board 150 is attached to the rear side of the frame 401, and the relay board 204 is attached to the right side at a perpendicular angle to the rear of the frame 401. That is, the relay board 204 is attached in a direction at a perpendicular angle to the surface of the control board 150, and is therefore arranged to straddle the surface of the frame.

[0048] The work of assembling the right door unit 104 to the frame 401 is performed from the lower side of FIG. 4, that is, from the right side of the image forming apparatus 100. Therefore, the work of fitting the cable wires hns201 to hns203 coming out of the right door unit 104 to the respective connectors 204a on the relay board 204 is also performed from the right side of the image forming apparatus 100, which is the same direction. In this embodiment, the connector 204a on the relay board 204 is mounted with a vertical mating connector (straight type) in accordance with the assembly work direction. Therefore, the assembly worker can insert the socket on the cable side into the vertical mating connector (connector 204a) on the relay board 204 in its current state without changing the orientation.

[0049] On the other hand, the operation of assembling the control board 150 to the frame 401 is performed from the right side of FIG. 4, that is, from the rear side of the image forming apparatus 100. Therefore, the operation of fitting the cables hns204 to hns206 to the control board 150 and the relay board 204 is also performed from the same direction, that is, from the rear side of the image forming apparatus 100. In this embodiment, each connector 150a on the control board 150 is mounted with a vertical mating type connector (straight type), while each connector 204b on the relay board 204 is mounted with a horizontal mating type connector (right angle type). In other words, the first connector 204b on the relay board 204 is mounted with the connector whose connection port for connecting the cables hns204 to hns206 faces the same direction as the connection port of the connector 150a mounted on the control board 150. Therefore, the assembly worker can insert the socket on the bundled wire side into the vertical mating connector (connector 150a) on the control board 150 and the horizontal mating connector (connector 204b) on the relay board 204 without changing the orientation.

[0050] As described above, according to this embodiment, the orientation (fitting direction) of the connector connection port of relay board 204 is changed according to the orientation during assembly. This improves workability and visibility when inserting a cable into the connector mounted on the board, and can prevent assembly defects such as half-insertion or oblique insertion of the connector. In addition, the assembly worker can insert the socket of the bundled cable into the connector on the relay board without changing the orientation, which reduces the burden on the assembly worker.

[0051] Example 2 Second Embodiment A configuration of an image forming apparatus according to a second embodiment of the present invention will be described with reference to Fig. 5. Fig. 5 is a configuration layout diagram of a board and cables in an image forming apparatus according to a second embodiment.

[0052] 5, in this embodiment, relay board 204, which is the second board, is attached to image forming apparatus 100 in a direction that forms a horizontal angle with the surface of control board 150, which is the first board. In other words, the surface of relay board 204, which is the second board, and the surface of control board 150, which is the first board, are arranged so that they face the same direction.

[0053] Here, the control board 150 and relay board 204 are attached in the same direction to the integrally formed frame body 501, but it is of course also possible to divide the frame body into separate bodies and attach the control board 150 and relay board 204 to each of them.

[0054] Furthermore, in the relay board of this embodiment, as shown in FIG. 5, the connection ports of the connectors mounted on the relay board are oriented in the opposite direction to that of the relay board of the first embodiment.

[0055] The first connector 204b is mounted such that a connection port for connecting the bundled wires hns204 to hns206, which are the first cables, faces the same direction as the connection port of the connector mounted on the control board 150, which is the first board. In other words, the first connector 204b is mounted such that it faces at a vertical angle to the surface of the relay board 204, which is the second board.

[0056] The second connector 204a is mounted such that a connection port for connecting the bundled wires hns201 to hns203, which are the second cables, is oriented in a different direction from the connection port of the connector mounted on the control board 150, which is the first board. In other words, the second connector 204a is mounted in an orientation that forms a horizontal angle with respect to the surface of the relay board 204, which is the second board.

[0057] That is, the second connector 204a into which the bundled wires hns201 to hns203, which are the second cables coming out from the right door unit 104, are inserted uses a horizontal mating connector (right angle type). Also, the first connector 204b into which the bundled wires hns204 to hns206, which are the first cables coming out from the control board 150, are inserted uses a vertical mating connector (straight type).

[0058] As described above, even in this embodiment in which the surface of the control board 150 and the surface of the relay board 204 are attached in the same orientation, the orientation (fitting direction) of the connector connection port of the relay board 204 is selected according to the orientation during assembly, as in the previous embodiment. This improves the workability and visibility when inserting the cable into the connector mounted on the board, and prevents assembly defects such as half-insertion or diagonal insertion of the connector. In addition, the assembly worker can insert the socket of the bundled wires into the connector on the relay board without changing the orientation, which reduces the burden on the assembly worker.

[0059] Other Examples In the above-mentioned embodiment, a unit having a built-in load part is exemplified, but the present invention is not limited to this configuration, and the load part may be directly disposed in the image forming apparatus as a single unit. In addition, a conveying unit (right door unit) having a rotating body such as a registration roller for conveying a sheet and a secondary transfer outer roller is exemplified as a unit having a built-in load part, but the present invention is not limited to this and may be a unit having other load parts. In addition, the load part is not limited to a drive source for driving a rotating body, and may be a detection means such as a sensor for detecting a sheet. Alternatively, the load part may be a sub-board to which a drive source such as a motor or a detection means such as a sensor is connected. The same effect can be obtained by applying the present invention to an image forming apparatus having such load parts or a unit having a built-in load part.

[0060] In the above-described embodiment, a copying machine equipped with the ADF 102 for feeding the document to be read and the document reading unit (image reading device) 101 for reading the image of the document is exemplified as the image forming device, but the image forming device is not limited to this. For example, the image forming device may be another image forming device such as a printer that does not have an image reading device, or another image forming device such as a multifunction device that combines these functions.

[0061] In the above-described embodiment, the image forming apparatus is configured to use an intermediate transfer tandem system in which four image forming units that form toner images of the respective colors of yellow, magenta, cyan, and black are arranged side by side on an intermediate transfer body, but the present invention is not limited to this. The image forming apparatus is not limited to a color image forming apparatus equipped with a plurality of photosensitive drums as shown in Fig. 1, and may be, for example, a color image forming apparatus equipped with one photosensitive drum or an image forming apparatus that forms a monochrome image.

[0062] In addition, an image forming apparatus that uses an intermediate transfer body, transfers toner images of each color to the intermediate transfer body in a sequentially overlapping manner, and transfers the toner images carried on the intermediate transfer body to a recording material all at once has been exemplified, but is not limited to this. An image forming apparatus that uses a recording material carrier, and transfers toner images of each color to the recording material carried on the recording material carrier in a sequentially overlapping manner may also be used. By applying the present invention to these image forming apparatuses, similar effects can be obtained.

[0063] In the above embodiment, the recording method is an electrophotographic method, but the recording method is not limited to this, and other recording methods such as an inkjet method may also be used. [Explanation of symbols]

[0064] M201~M203 ...Motor (drive source) S...Recording material SNS201 to SNS204 ... sensors (detection means) hns201~hns203 ...Bundle (second cable) hns204~hns206 ... bundled wires (first cable) 1Y, 1M, 1C, 1K...photosensitive drum 6...Intermediate transfer belt 7 ... Secondary transfer inner roller 15, 16 ... Registration roller (rotating body) 17 ... Secondary transfer outer roller (rotating body) 150 ... control board (first board) 150a … Connector 204 ... relay board (second board) 204a ... Connector (second connector) 204b ... Connector (first connector) 205 ... Sub-board (load components) 100 ... Image forming device 103 … Manual feed section 103a ... Manual feed roller 104 …Right door unit (transport unit) 104a ... double-sided conveying roller (rotating body) 104b ... Double-sided transport path 401,501 …Frame body

Claims

1. A first substrate having a first connector and a second connector; a first cable connected to the first connector; a second cable connected to the second connector; an insertion direction of the first cable into the first connector along a first direction; an insertion direction of the second cable into the second connector along a second direction intersecting the first direction;

2. A control board having a third connector to which the first cable is connected and controlling the image forming device, 2. The image forming apparatus according to claim 1, wherein the insertion direction of the first cable into the third connector is along the first direction.

3. An image forming apparatus as described in Claim 2, characterized in that a plane including the surface of the control board and a plane including the surface of the first board intersect at a right angle.

4. The control board is attached to a rear surface of the image forming apparatus, 4. The image forming apparatus according to claim 3, wherein the first substrate is attached to a side surface of the image forming apparatus.

5. An image forming apparatus as described in Claim 2, characterized in that a surface including the surface of the control board and a surface including the surface of the first board are parallel.

6. An image forming device as described in Claim 5, characterized in that the control board and the first board are attached to the back of the image forming device.

7. Further comprising a load component, the first cable connects the first board and the control board; 3. The image forming apparatus according to claim 2, wherein the second cable connects the first board and the load component.

8. The control board is attached to the rear surface of the image forming apparatus, 8. The image forming apparatus according to claim 7, wherein the first substrate and the load component are attached to a side surface of the image forming apparatus.

9. The first board and the control board are attached to a rear surface of the image forming apparatus, 8. The image forming apparatus according to claim 7, wherein the load component is attached to a side surface of the image forming apparatus.

10. An image forming apparatus as described in Claim 7, characterized in that the first board is arranged between the control board and the load component and relays the connection between the control board and the load component.

11. The image forming apparatus according to claim 7, characterized in that the load part includes a drive source that drives a rotating body that transports a sheet.

12. An image forming apparatus as described in Claim 7, characterized in that the load part includes a detection unit that detects a sheet.

13. The image forming apparatus described in Claim 7, characterized in that the load component includes a drive source that drives a rotating body that transports a sheet or a detection unit that detects a sheet, and a sub-board for connecting the control board.

14. The first direction is a front-to-rear direction of the image forming device, 2. The image forming apparatus according to claim 1, wherein the second direction is a left-right direction of the image forming apparatus.

15. A substrate for an image forming apparatus, comprising: a first connector for connecting a first cable; a second connector for connecting a second cable; an insertion direction of the first cable into the first connector along a first direction; A substrate, wherein an insertion direction of the second cable into the second connector is along a second direction that intersects with the first direction.

16. The first connector is a right-angle type, 16. The substrate of claim 15, wherein the first direction is along a surface of the substrate.

Images