JP6812260B2 - Image reader and image forming device - Google Patents

Description

The present invention relates to an image reader for reading an image of a document and an image forming apparatus including the image reader.

Conventionally, in an image forming apparatus such as a printer, a copying machine, a facsimile, and a multifunction device, an image forming apparatus main body and an image reading device arranged on an upper portion of the image forming apparatus main body are known. As an image reading device, a device provided with an automatic document transporting device (ADF: Auto Document Feeder) having a scanning function for reading images on the front and back surfaces of a document while moving the document is known.

As a method of reading the front and back surfaces of a document while transporting the document with an ADF, the image of the first surface of the document is read by a scanning sensor arranged on the main body side of the image reader, and then the image of the second surface of the document is inverted and transported. The configuration for reading is generally known. In recent years, a configuration has been proposed in which a reading sensor for front surface reading is arranged on the main body side of an image reading device and a reading sensor for reading the back surface is arranged on the ADF side (see Patent Document 1). With this configuration, it is possible to read the images on both the front and back sides of the document without inverting the document.

As the reading sensor, for example, a close contact type image sensor is used. The image sensor photoelectrically converts the reflected light image of the document and transmits the image signal to the control unit. The control unit is arranged, for example, in the main body of the image forming apparatus. The reading sensor and the control unit are connected by a cable such as a flexible flat cable so that image signals can be communicated with each other.

Japanese Unexamined Patent Publication No. 2011-205341

By the way, in order to improve the efficiency of the assembly work of the image forming apparatus, it is considered to make the image reading apparatus common among different models of the image forming apparatus. However, since the installation position of the control unit differs depending on the model of the image forming apparatus, the appropriate length of the cable connecting the reading sensor and the control unit differs depending on the model. Therefore, in the conventional configuration in which the cable extending from the reading sensor is directly connected to the control unit, it is difficult to standardize the image reading device because the appropriate length of the cable differs depending on the model of the image forming device.

Further, when sharing an image reading device between different models of image forming devices, it is necessary not only to take measures against cables but also to take measures to prevent dust from entering the frame in which the reading sensor is arranged.

Therefore, an object of the present invention is to improve assemblability and dust resistance.

In the image reading device of the present invention, a first frame, a first reading sensor housed in the first frame and reading an image of a document, and a first cable extending from the first reading sensor are connected. A relay board having a mounting surface on which a first connector and a second connector to which a second cable connected to an external device is connected is mounted, and is arranged outside the first frame. It has an opening through which the second cable passes at a position facing the second connector, and is outside the first frame so as to cover a portion of the first cable drawn out from the first frame. A space is arranged outside the first frame so as to cover the arranged first cover and the opening of the first cover, and a space for running the second cable between the first cover and the first cover. It is characterized by having a second cover to be formed .

According to the present invention, assemblability and dust resistance are improved.

(A) is a schematic diagram showing the configuration of a printer which is an example of the image forming apparatus according to the embodiment. (B) is a schematic diagram showing the configuration of an image forming engine. (A) is a perspective view of the image reading unit according to the embodiment. (B) is a schematic diagram of an image reading unit. (A) to (c) are exploded perspective views for explaining the wiring structure connecting the image sensor and the control unit. (A) is a cross-sectional view of the periphery of the relay board in the image reading unit. (B) is an explanatory diagram showing a connection state of a cable to a relay board. It is a bottom view of the image reading unit. (A) is a bottom view of an image reading unit showing a state in which the first cover is attached to the lower surface of the reader frame. (B) is a perspective view of an image reading unit showing a state in which the first cover is attached to the lower surface of the reader frame. (A) is a bottom view of the image reading unit showing a state in which the second cover is attached to the lower surface of the reader frame. (B) is a perspective view of an image reading unit showing a state in which the second cover is attached to the lower surface of the reader frame.

Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. In the following description, the sheet includes, in addition to plain paper, special paper such as coated paper, recording material having a special shape such as envelope and index paper, and plastic film and cloth for overhead projectors. FIG. 1A is a schematic view showing a configuration of a printer which is an example of an image forming apparatus according to an embodiment. The printer 100 shown in FIG. 1A is an electrophotographic laser beam printer. The printer 100 includes a main body 70 which is an image forming device main body, and an image reading unit 10 as an example of an image reading device mounted on the upper part of the main body 70.

Here, in the printer 100, that is, the image reading unit 10, in FIG. 1A, the right side is arrow X1, the left side is arrow X2, the front side is arrow Y1, the rear side is arrow Y2, the upper side is arrow Z1, and the lower side is arrow. It is shown by Z2.

The main body 70 includes a housing 70A, an image forming engine 60 which is an example of an image forming unit, and a control unit 80 which is an example of an external device. The image forming engine 60 is arranged inside the housing 70A, and forms an image on the fed sheet. The control unit 80 is arranged in a control box or the like attached to the inside of the housing 70A or the outer surface of the housing 70A, and controls the entire printer 100, particularly the image forming engine 60.

FIG. 1B is a schematic view showing the configuration of the image forming engine 60. As shown in FIG. 1B, the image forming engine 60 includes an electrophotographic image forming unit PU and a fixing device 7. When the start of the image forming operation is commanded, the photosensitive drum 1 which is a photoconductor rotates, and the drum surface is uniformly charged by the charging device 2. Then, the exposure apparatus 3 modulates and outputs the laser beam based on the image data transmitted from the image reading unit 10 or an external computer, scans the surface of the photosensitive drum 1, and forms an electrostatic latent image. This electrostatic latent image is visualized (developed) by the toner supplied from the developing device 4 to become a toner image.

In parallel with such an image forming operation, a feeding operation of feeding a sheet loaded on a cassette or a manual feed tray (not shown) to the image forming engine 60 is executed. The fed sheet is conveyed in accordance with the progress of the image forming operation by the image forming unit PU. Then, the toner image supported on the photosensitive drum 1 is transferred to the sheet by the transfer roller 5. The toner remaining on the photosensitive drum 1 after the toner image transfer is recovered by the cleaning device 6. The sheet on which the unfixed toner image is transferred is delivered to the fixing device 7, sandwiched between roller pairs, and heated and pressurized. The sheet in which the toner is melted and fixed to the sheet and the image is fixed is discharged to the outside of the housing 70A by the discharge roller pair.

The control unit 80 includes a central processing unit (CPU: Central Processing Unit) 81 that controls the printer 100 in an integrated manner, and a memory 82 that stores programs, image information, and setting information executed by the CPU 81. In addition, the control unit 80 includes an AD conversion unit 83 that converts an analog image signal indicating image data acquired from the image reading unit 10 into a dental image signal. The AD conversion unit 83 converts the analog image signal into a digital image signal by performing various image processing on the input analog image signal, for example, binarization processing, gradation processing, scaling processing, and editing processing. Etc. to generate a digital image signal. The control unit 80 can control the image forming engine 60 to perform an image forming operation of forming an image on a sheet which is a recording medium.

The image forming engine 60 is an example of an image forming means capable of forming an image on a sheet as a recording medium, and an intermediate transfer method including an intermediate transfer body may be used instead of the above-mentioned direct transfer method. , Other mechanisms such as an inkjet method may be used.

Next, the image reading unit 10 will be described. FIG. 2A is a perspective view of the image reading unit according to the embodiment. As shown in FIG. 2A, the image reading unit 10 includes an ADF (Auto Document Feeder) 11 which is an example of a sheet feeding device that automatically feeds a document DA placed on a document tray 14. It includes a reader unit 12 having a platen glass. The ADF 11 is rotatably supported by a hinge with respect to the reader portion 12 so that the platen glass can be opened.

FIG. 2B is a schematic view of the image reading unit 10. As shown in FIGS. 1A and 2B, the reader unit 12 has a leader frame 12A which is a first frame, and the ADF 11 is a second frame which can be opened and closed with respect to the leader frame 12A. It has an opening / closing frame 11A. The sheet used as the original DA may be a blank sheet or may have an image formed on one side or both sides.

As shown in FIG. 1A, the ADF 11 ejects the document tray 14 on which the document DA is placed, the document transport section 15 that transports the document DA supplied from the document tray 14, and the document DA. It is provided with a discharge tray 29. The document transport section 15 has a document transport path (U turn path) 22 that is curved in a substantially U shape. The document transport section 15 includes a pickup roller 17, a separation roller 18, a separation pad 19, a document stopper 20, a document presence / absence sensor 21, a transport roller pair 23, a discharge roller pair 24, and a document edge sensor 25 along the document transport path 22. Is placed.

Adhesion-type image sensors 16 and 26, which are examples of reading sensors capable of reading image information from the original DA, are arranged on the ADF 11 and the reader unit 12, respectively. That is, the reader unit 12 has an image sensor 16 which is an example of the first reading sensor, and the ADF 11 has an image sensor 26 which is an example of the second reading sensor. The image sensor 16 is housed inside the reader frame 12A of the reader unit 12, and the image sensor 26 is housed inside the opening / closing frame 11A of the ADF 11.

The image sensors 16 and 26 irradiate the image information surface of the original DA from the LED array as a light source, and image the reflected light reflected on the image information surface on the sensor element with a lens to read the image information. ..

Hereinafter, an operation (scanning operation) in which the image reading unit 10 reads image information from the original DA while feeding the original DA by the ADF 11 will be described. First, the operator places the document DA on the document tray 14. At this time, the tip position of the document DA is regulated by the document stopper 20, the document DA is detected by the document presence / absence sensor 21, and the control unit 80 recognizes the existence of the document.

Then, when the operator instructs the start of scanning via an operation unit (not shown), the document stopper 20 is pushed down by the driving force supplied from the drive unit (not shown), and the document DA is separated from the separation roller 18 by the pickup roller 17. It is conveyed to the separation part between the pads 19. Then, the original document DA is separated from other original documents by the separation pad 19, and the uppermost original document DA is conveyed by the separation roller 18. The separated document DA is conveyed along the document transfer path 22 by the transfer roller pair 23, and is conveyed toward the reading position by the image sensors 16 and 26.

After that, when the tip of the document DA is detected by the document edge sensor 25, the image information is read by the image sensors 16 and 26 at the timing when the tip of the document DA is conveyed by a predetermined amount from the detection position of the document edge sensor 25. To be started. The image sensor 16 arranged in the reader unit 12 reads image information from the first surface (front surface) of the document DA, and the image sensor 26 arranged in the ADF 11 has a second surface (back surface) opposite to the first surface of the document DA. ) Read the image information. The document DA that has passed the reading positions of the image sensors 16 and 26 is conveyed toward the ejection roller pair 24. Then, when the rear end portion of the document DA is detected by the document edge sensor 25, the image information by the image sensors 16 and 26 is transmitted at the timing when the rear end portion of the document DA is conveyed from the detection position of the document edge sensor 25 by a predetermined amount. Reading ends. Then, the document DA is discharged to the discharge tray 29 by the discharge roller pair 24. Such a scanning operation is repeated until the document presence / absence sensor 21 detects that the document placed on the document tray 14 does not exist.

The image reading unit 10 can execute an operation (fixed reading operation) of reading image information from a document placed on the platen glass of the reader unit 12. In this case, the image sensor 16 moves along the platen glass in the sub-scanning directions (X1, X2 directions in FIG. 1A) while the original is placed still on the platen glass, so that the document DA Image information is read from.

The image sensors 16 and 26 are electrically connected to the control unit 80, specifically, the AD conversion unit 83 by wiring. Hereinafter, this wiring structure will be described. 3A to 3C are exploded perspective views for explaining a wiring structure connecting the image sensors 16 and 26 and the control unit 80. The image sensor 16 and the control unit 80 are electrically connected via a cable 30, which is a first cable, a relay board 40, and a cable 32, which is a second cable. As a result, an image signal is transmitted from the image sensor 16 to the control unit 80, and power is supplied from the control unit 80 to the image sensor 16. The image sensor 26 and the control unit 80 are electrically connected via a cable 31, which is a third cable, a relay board 40, and a cable 33, which is a fourth cable. As a result, the image sensor 26 transmits an image signal to the control unit 80, and the control unit 80 supplies electric power to the image sensor 26. Cables 30, 31, 32, 33 are flexible flat cables.

As shown in FIG. 3A, a cable 30 extends from the image sensor 16 and a cable 31 extends from the image sensor 26. Specifically, a connector 30A is provided at one end of the cable 30, a connector 30B is provided at the other end, and the connector 30B is connected to a connector (not shown) of the image sensor 16. Further, a connector 31A is provided at one end of the cable 31, and a connector 31B is provided at the other end, and the connector 31B is connected to a connector (not shown) of the image sensor 26.

FIG. 4A is a cross-sectional view of the periphery of the relay board 40 in the image reading unit 10 according to the embodiment. Further, FIG. 4B is an explanatory diagram showing the connection state of the cables 30, 31, 32, 33 to the relay board 40. The relay board 40 is a printed wiring board. The relay board 40 has a mounting surface 40A on which a connector 50A which is a first connector, a connector 52A which is a second connector, a connector 51A which is a third connector, and a connector 53A which is a fourth connector are mounted. doing. The board portion 45 is composed of a relay board 40 and connectors 50A, 51A, 52A, and 53A.

The connectors 52A and 53A are mounted on the mounting surface 40A of the relay board 40 so as to be adjacent to each other, and the connectors 50A and 51A are mounted on the mounting surface 40A of the relay board 40 so as to sandwich the connectors 52A and 53A. That is, on the mounting surface 40A of the relay board 40, the connector 50A, the connector 52A, the connector 53A, and the connector 51A are arranged in this order from the X1 direction to the X2 direction.

Each pin of the connector 50A and each pin of the connector 52A are electrically connected by the wiring pattern of the relay board 40, and each pin of the connector 51A and each pin of the connector 53A are electrically connected by the wiring pattern of the relay board 40. Has been done. The connector 30A of the cable 30 shown in FIG. 3A is connected to the connector 50A shown in FIG. 4B. Further, the connector 31A of the cable 31 shown in FIG. 3A is connected to the connector 51A shown in FIG. 4B.

As shown in FIG. 3B, a connector 32A is provided at one end of the cable 32, and a connector 32B is provided at the other end. A connector 33A is provided at one end of the cable 33, and a connector 33B is provided at the other end.

The connectors 32B and 33B are connected to connectors (not shown) of the control unit 80, respectively. As shown in FIG. 4B, the connector 32A is connected to the connector 52A, and the connector 33A is connected to the connector 53A.

With the above wiring structure, as shown in FIG. 3C, the image sensor 16 is electrically connected to the control unit 80 by the cable 30, the relay board 40, and the cable 32. Further, the image sensor 26 is electrically connected to the control unit 80 by the cable 31, the relay board 40, and the cable 33.

As shown in FIG. 4A, the relay board 40 is arranged outside the reader frame 12A. Specifically, the relay board 40 is the outer surface of the reader frame 12A and is fixed to the lower surface 12B via the spacer 55.

By the way, when the image reading unit 10 is shared between the models of the printer 100, the installation position of the control unit 80 differs depending on the model of the printer 100, so the cables 32 and 33 have lengths corresponding to the models. Must be selected. In this embodiment, the relay board 40 is used in order to standardize the image reading unit 10 among the models of the printer 100. When assembling the image reading unit 10 to the main body 70, the operator attaches cables 32 and 33 having appropriate lengths to the relay board 40 according to the model of the printer 100, and connectors 52A and 53A. Just connect to. That is, the image reading unit 10 can be standardized only by changing the cables 32 and 33 connected to the relay board 40. As a result, even if the position of the control unit 80 differs depending on the model of the printer 100, it can be easily dealt with, and the assembly work can be performed efficiently. Therefore, the assemblability is improved.

FIG. 5 is a bottom view of the image reading unit 10. Note that FIG. 5 shows a state in which the covers 41 and 42 shown in FIG. 4A, which will be described later, are removed. As shown in FIG. 5, openings H1 and H2 are formed on the lower surface 12B of the leader frame 12A. The cable 30 shown in FIG. 3A is pulled out from the opening H1 shown in FIG. 5 to the outside of the reader frame 12A, and the connector 30A shown in FIG. 4B is connected to the connector 50A shown in FIG. The cable 31 shown in FIG. 3A is pulled out from the opening H2 shown in FIG. 5 to the outside of the reader frame 12A, and the connector 31A shown in FIG. 4B is connected to the connector 51A shown in FIG.

Here, since the image sensor 16 is housed in the reader frame 12A, the cable 30 is crawled in the reader frame 12A and is pulled out from the lower surface 12B of the reader frame 12A through the opening H1. On the other hand, the image sensor 26 is housed in the opening / closing frame 11A. Therefore, as shown in FIG. 2B, the cable 31 is pulled out of the opening / closing frame 11A through an opening (not shown) of the opening / closing frame 11A, and is drawn into the reader frame 12A through an opening (not shown) of the reader frame 12A. ing. The cable 31 is wired across the frames 11A and 12A on the rear side of the image reading unit 10, that is, on the side where a hinge (not shown) that supports the opening / closing frame 11A can be opened / closed. Then, as shown in FIG. 5, the cable 31 is crawled in the reader frame 12A and is pulled out from the lower surface 12B of the reader frame 12A through the opening H2. In the cable 31, the portion between the opening / closing frame 11A and the reader frame 12A is covered with a cover (not shown).

On the outside of the reader frame 12A, the connectors 50A and 51A, the openings H1 and H2, and the cover 41 which is the first cover covering the portions 30D and 31D drawn out of the leader frame 12A in the cables 30 and 31 are arranged. ing. The cover 41 is fixed to the lower surface 12B of the leader frame 12A. As a result, as shown in FIG. 4A, the relay boards 40 and the portions 30D and 31D of the cables 30 and 31 are arranged in the space R1 between the reader frame 12A and the cover 41.

FIG. 6A is a bottom view of the image reading unit 10 showing a state in which the cover 41 is attached to the lower surface 12B of the reader frame 12A, and FIG. 6B is a bottom view of the image reading unit 10 in which the cover 41 is attached to the lower surface 12B of the reader frame 12A. It is a perspective view of the image reading unit 10 which shows the state.

By providing the cover 41 as shown in FIGS. 6A and 6B, it is possible to prevent dust from entering the inside of the leader frame 12A through the openings H1 and H2. Therefore, the dust resistance is improved.

Further, by covering the cables 30 and 31 with the cover 41, when the image reading unit 10 is assembled to the main body 70, a person or an object comes into contact with the cables 30 and 31, and the cables 30 and 31 are disconnected from the connectors 50A and 51A. Can be prevented.

Since the cables 32 and 33 are connected to the connectors 52A and 53A, an opening H0 is formed at a position of the cover 41 facing the connectors 52A and 53A. The cables 32 and 33 are connected to the connectors 52A and 53A through the opening H0. The size (area) of the opening H2 is smaller than the size (area) of the mounting surface 40A. That is, the connectors 52A and 53A are exposed by the opening H0 so that the cables 32 and 33 can be connected, but the connectors 50A and 51A are covered with the cover 41.

As shown in FIG. 4A, a cover 42, which is a second cover that covers the opening H0 of the cover 41, is arranged on the outside of the reader frame 12A. The cover 42 is fixed to the lower surface 12B of the leader frame 12A. The cover 42 can prevent dust from entering the leader frame 12A through the opening H0. That is, the double structure of the cover 41 and the cover 42 effectively prevents dust from entering the leader frame 12A.

The cables 32 and 33 are routed according to the position of the control unit 80, and in this embodiment, they are installed along the cover 41 as shown in FIGS. 6A and 6B. The cables 32 and 33 are attached to the cover 41 with double-sided tape (not shown). By arranging the cover 41, the cables 30, 31 and the cables 32, 33 can be separated from each other, and the occurrence of electromagnetic interference between the cables 30, 31 and the cables 32, 33, that is, the generation of noise can be prevented. Can be done. The cable 32 and the cable 33 are separated from each other by a spacer such as a sponge (not shown) to prevent the occurrence of electromagnetic interference between the cable 32 and the cable 33, that is, the generation of noise.

FIG. 7A is a bottom view of the image reading unit 10 showing a state in which the cover 42 is attached to the lower surface 12B of the reader frame 12A, and FIG. 7B is a bottom view of the image reading unit 10 in which the cover 42 is attached to the lower surface 12B of the reader frame 12A. It is a perspective view of the image reading unit 10 which shows the state.

The cover 42 is spaced from the cover 41 and faces the opening H0 so as to form the space R2 shown in FIG. 4A in which the cables 32 and 33 crawl between the cover 41 and the cover 42. It extends along the cover 41. That is, the cover 42 is fixedly arranged on the lower surface 12B of the reader frame 12A so as to cover the portions 32D and 33D that crawl on the cover 41 in the cover 41 and the cables 32 and 33. Then, the cables 32 and 33 are pulled out from the opening H3 at the end of the cover 42 in the Z2 direction at a position different from the opening H0 in the cover 42.

In the present embodiment, the connectors 52A and 53A and the portions 32D and 33D of the cables 32 and 33 that crawl along the cover 41 are covered with the cover 42. As a result, when assembling the image reading unit 10 to the main body 70, a person or an object comes into contact with the parts 32D, 33D of the cables 32, 33, the connectors 52A, 53A, etc., and the cables 32, 33 are disconnected from the connectors 52A, 53A. Can be prevented.

Here, as shown in FIG. 4A, the cover 41 has a portion 41A which is a first portion facing the mounting surface 40A and a portion 41B which is a second portion adjacent to the portion 41A. ing. The portion 41A protrudes from the portion 41B in the Z2 direction away from the leader frame 12A by the amount of protrusion D0. The relay board 40 is brought close to the portion 41A by the spacer 55, and effectively prevents dust from entering the space R1 surrounded by the leader frame 12A and the cover 41 through the opening H0. That is, it effectively prevents dust from entering the inside of the leader frame 12A.

Further, the distance between the lower surface 12B of the leader frame 12A and the mounting surface 40A of the relay board 40 is equal to or greater than the distance between the lower surface 12B of the leader frame 12A and the surface 41D facing the lower surface 12B of the leader frame 12A in the portion 41B. Suitable. In FIG. 4A, the distance between the lower surface 12B of the reader frame 12A and the mounting surface 40A of the relay board 40 is defined as D1. Further, the distance between the lower surface 12B of the leader frame 12A and the surface 41D of the portion 41B facing the lower surface 12B of the leader frame 12A is defined as D2. In FIG. 4A, it is preferable that the distance D1 is the distance D2 or more, and in the present embodiment, the distance D1 and the distance D2 are the same. As a result, since it is shielded by the relay board 40, it is possible to more effectively prevent dust from entering the space R1 from the opening H0. That is, it is possible to more effectively prevent dust from entering the inside of the leader frame 12A.

The present invention is not limited to the embodiments described above, and many modifications can be made within the technical idea of the present invention. Moreover, the effects described in the embodiments are merely a list of the most preferable effects arising from the present invention, and the effects according to the present invention are not limited to those described in the embodiments.

In the above-described embodiment, the case where the image sensor 16 for reading the image on the first surface of the document and the image sensor 26 for reading the image on the second surface of the document are arranged has been described, but the present invention is not limited to this. .. That is, the reading sensor may be arranged only on the reader frame 12A side. In this case, even if the image reading device is configured to have the scanning sensor read the image on the first surface of the document, and then reverse-convey the document to have the scanning sensor read the image on the second surface of the document. Good. Further, the image reading device does not have a function of inverting and conveying the original, and may be configured to read the image only on the first surface of the original. In any case, the cables 31 and 33 described in the above-described embodiment can be omitted, and the connectors 51A and 53A can also be omitted in the relay board 40.

Further, in the above-described embodiment, the case where the communication via the cables 30, 31, 32, 33 is performed by the analog signal has been described, but the present invention is not limited to this, and the case where the communication is performed by the digital signal may be used. That is, the image sensors 16 and 26 may have an AD conversion unit 83 and transmit a digital signal as an image signal.

10 ... Image reading unit (image reading device), 12A ... Reader frame (first frame), 12B ... Bottom surface (outer surface), 16 ... Image sensor (first reading sensor), 26 ... Image sensor (second reading) Sensor), 30 ... cable (first cable), 31 ... cable (third cable), 32 ... cable (second cable), 33 ... cable (fourth cable), 40 ... relay board, 40A ... Mounting surface, 41 ... cover (first cover), 42 ... cover (second cover), 50A ... connector (first connector), 51A ... connector (third connector), 52A ... connector (second connector) Connector), 53A ... Connector (fourth connector), 60 ... Image forming engine (image forming unit), 80 ... Control unit, 100 ... Printer (image forming device)

Claims (7)

The first frame and
A first reading sensor housed in the first frame and reading an image of a document,
It has a mounting surface on which a first connector to which a first cable extending from the first reading sensor is connected and a second connector to which a second cable connected to an external device is connected are mounted. A relay board arranged outside the first frame and
It has an opening through which the second cable passes at a position facing the second connector, and is outside the first frame so as to cover a portion of the first cable drawn from the first frame. The first cover placed and
A second cover, which is arranged outside the first frame so as to cover the opening of the first cover and forms a space for the second cable to crawl between the first cover and the first cover. An image reader characterized by being equipped. The first cover has a first portion facing the mounting surface and a second portion adjacent to the first portion, and the first portion is more than the second portion. The image reading device according to claim 1, wherein the image reading device projects in a direction away from the first frame. The distance between the outer surface of the first frame and the mounting surface is equal to or greater than the distance between the outer surface of the first frame and the surface of the second portion facing the outer surface of the first frame. The image reading device according to claim 2. A second frame that is openable and closable with respect to the first frame,
A second reading sensor, which is housed in the second frame and reads an image of a surface opposite to the surface of the document read by the first reading sensor, is further provided.
A third connector to which a third cable extending from the second reading sensor is connected is further mounted on the mounting surface.
The image reading device according to any one of claims 1 to 3, wherein the first cover covers a portion of the third cable drawn from the first frame. The image reading device according to claim 4, wherein the third cable is pulled out from the second frame and drawn into the inside of the first frame. A fourth connector is mounted on the mounting surface so as to face the opening of the first cover and to which a fourth cable connected to an external device is connected.
The image reading device according to claim 4 or 5, wherein the fourth cable is arranged so as to crawl a space formed between the first cover and the second cover. .. The image reading device according to any one of claims 1 to 6 .
An image forming part that forms an image on the sheet,
A control unit that controls the image forming unit is provided.
An image forming apparatus, wherein the external device is the control unit.

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