JP6610005B2 - Image reading device - Google Patents

Description

  The present invention relates to an image reading apparatus.

  2. Description of the Related Art An image reading apparatus configured to convey a sheet with an automatic document feeder (hereinafter referred to as ADF) and to read images on both sides of the sheet with a first reading unit and a second reading unit is known. (For example, refer to Patent Document 1). In the case of the image reading apparatus described in Patent Document 1, the first reading unit is provided in the first unit, and the second reading unit and the ADF are provided in the second unit disposed on the first unit. Yes.

  Further, the image reading device described in Patent Document 1 has a configuration as a flatbed image reading device. More specifically, the first unit is provided with a platen that supports an object to be read, and the first reading unit described above is configured to be movable along the platen below the platen. The second unit is configured to be displaceable to a closed position that covers the platen and to an open position that is separated from the platen, and the second unit is configured to function as a cover that covers an object to be read supported by the platen. .

  Furthermore, in the case of the image reading apparatus described in Patent Document 1, the second reading unit and ADF provided in the second unit are controlled by a control unit provided in the first unit. Therefore, between the first unit and the second unit, a flat cable connecting the second reading unit and the control unit, and a wire harness connecting the ADF and the control unit (hereinafter collectively referred to as wiring) Is provided).

JP 2011-211595 A

  By the way, in the case of the image reading apparatus, between the first unit and the second unit, the wiring locations of the flat cable and the wire harness are in the first direction in which the rotation center axis of the second unit extends (in Patent Document 1). In the left-right direction). More specifically, between the first unit and the second unit, the flat cable wiring location is closer to one end in the range from one end of the apparatus to the other end in the first direction. On the other hand, between the first unit and the second unit, the wiring location of the wire harness is closer to the other end in the range from the one end to the other end of the apparatus in the first direction.

  However, when the wiring locations of the flat cable and the wire harness are secured at positions separated from each other in the first direction, each wiring location separately occupies an area of a predetermined dimension in the first direction. Become. For this reason, the size of the image reading apparatus increases in the first direction described above.

  In view of the above circumstances, it is desirable to provide an image reading apparatus capable of making the apparatus compact in the first direction in which the rotation center axis of the second unit extends.

  An image reading apparatus described below includes a support surface that supports an object to be read and a reading unit that is provided below the support surface and that can read an image of the object to be read supported by the support surface. A unit, a second unit connected to the first unit via a hinge portion, and configured to be displaceable to a closed position covering the support surface and an open position spaced apart from the support surface; and the first unit. A wiring for connecting the electrical mechanism and the electrical mechanism provided in the second unit, and the hinge portion includes a first member and a second member rotatably attached to the first member. And the first member is attached to the first unit so as to be movable up and down, and the second member is attached to the second unit so as not to be displaced. In the first direction Of the first end and the second end, which are both ends in a second direction parallel to the support surface and perpendicular to the first direction, connected to the first unit so as to be rotatable around the center axis and vertically movable. A holding portion that holds the first member so as to be movable up and down is provided at a location near the second end. The first member faces the first surface of the first member toward the first end, and the first member The second surface of the one member is held by the holding portion in a state where the second surface is directed to the second end, and the wiring includes a first extending portion extending in the vertical direction between the first unit and the second unit. The first extending portion is arranged in a range from the position where the first surface of the first member is located to the position where the second end of the first unit is located in the second direction, Includes at least one flat cable and cables other than the flat cable And, in the first extending portion, and a cable other than the flat cable and the flat cable are arranged to overlap when viewed from a second direction at an interval therebetween.

  According to the image reading apparatus configured as described above, in the first extending portion as described above, the flat cable and the cable other than the flat cable are viewed from the second direction with a space between each other. It is arranged at the overlapping position. Therefore, compared with the case where these cables are arranged at positions that do not overlap with each other in the first direction when viewed from the second direction, the size occupied by the area necessary for the cable arrangement is reduced in the first direction. And the size in the first direction of the apparatus can be made compact.

FIG. 1 is a block diagram showing the configuration of the multifunction machine. FIG. 2 is a longitudinal sectional view of the reading unit and the second unit. FIG. 3 is a plan view of the first unit and the second unit. FIG. 4A is a cross-sectional view of the first unit and the second unit taken along the line IVA-IVA in FIG. FIG. 4B is a cross-sectional view showing a state where the second unit in the closed position in FIG. 4A is in the open position. FIG. 5 is an enlarged cross-sectional view of a V portion shown in FIG. 6A is a cross-sectional view of the first unit and the second unit taken along the line VIA-VIA in FIG. FIG. 6B is a cross-sectional view showing a state where the sheet support portion that is in the storage position in FIG. 6A is in the use position. FIG. 7 is an enlarged cross-sectional view of the VII portion shown in FIG. FIG. 8A is a perspective view showing a wiring path in the ADF unit. FIG. 8B is a perspective view showing a wiring path in the reading unit. FIG. 9 is a perspective view showing wiring paths in the ADF unit and the reading unit. FIG. 10A is a perspective view showing a wiring path in the reading unit. FIG. 10B is a perspective view showing a wiring path in the reading unit. FIG. 11 is a cross-sectional view of the wiring paths in the ADF unit and the reading unit as viewed from the front. FIG. 12 is a cross-sectional view of the wiring path in the reading unit in plan view.

Next, the above-described image reading apparatus will be described with an exemplary embodiment.
[Configuration of MFP]
A multifunction device 1 shown in FIG. 1 has a configuration corresponding to an example of the above-described image reading apparatus. As shown in FIG. 1, the multi-function device 1 includes a main unit 2, a reading unit 3, and an ADF unit 4. Among these, the main unit 2 and the reading unit 3 correspond to an example of a first unit referred to in this specification, and the ADF unit 4 corresponds to an example of a second unit referred to in this specification.

  The main unit 2 includes a control unit 11, a first transport unit 12 (corresponding to an example of a transport unit in the present specification), an image forming unit 13, a LAN communication unit 14, an operation panel 15, and the like. Yes. The reading unit 3 is provided with a first image sensor 16 (corresponding to an example of a reading unit in the present specification), an image sensor driving unit 17, and the like. The ADF unit 4 is provided with a second image sensor 18, a second transport unit 19, and the like.

  The control unit 11 includes a well-known CPU, ROM, RAM, and the like, and the CPU executes predetermined processing according to a control program stored in the ROM or RAM, thereby performing processing for controlling each unit of the multifunction device 1. Executed.

  The first transport unit 12 is configured to be able to transport the recording medium along the first transport path to the downstream side in the transport direction. More specifically, the first transport unit 12 defines a first transport path together with a motor, a plurality of rollers that define a first transport path, a power transmission unit that transmits power from the motor to several rollers, and a plurality of rollers. A guide member or the like is provided. The motor operates under the control of the control unit 11. Among the plurality of rollers, some rollers are rotationally driven by the power transmitted from the motor. The remaining rollers are disposed at positions where the recording medium is sandwiched between the rollers and the rollers that are rotationally driven, and rotate following the rollers that are rotationally driven or the recording medium that is conveyed. For example, the guide member is disposed between rollers that are rotationally driven, and guides a sheet conveyed by the rollers.

  The image forming unit 13 is configured to be able to form an image on the recording medium conveyed by the first conveying unit 12 by an ink jet method. More specifically, the image forming unit 13 includes a recording head that ejects ink, a drive mechanism for reciprocating the recording head, and the like. The image forming unit 13 may be configured to be able to form an image on a recording medium by an electrophotographic method. The LAN communication unit 14 includes a communication interface device compatible with a wireless LAN and a communication interface device compatible with a wired LAN.

  The operation panel 15 is an input device (for example, a touch panel, various buttons, and switches) that is operated when a user gives various commands to the multifunction device 1, and an operation state of the multifunction device 1. Output device (for example, a liquid crystal display device and various lamps).

  The first image sensor 16 is a sensor having a plurality of reading elements arranged in one direction, and in this embodiment, a contact image sensor (CIS) is adopted. The image sensor driving unit 17 is configured to move the first image sensor 16 in the sub-scanning direction orthogonal to the main scanning direction, with the arrangement direction of the plurality of reading elements included in the first image sensor 16 as the main scanning direction. .

  More specifically, as shown in FIG. 2, the reading unit 3 is provided with a first platen 21 and a second platen 22 made of transparent plate members. The 1st platen 21 is a member which comprises the support surface as used in this specification, and is comprised so that a reading target object can be supported. Below the first platen 21 and the second platen 22, a guide rail 23 extending substantially parallel to the first platen 21 and the second platen 22 is provided. A carriage 24 that can reciprocate along the guide rail 23 is mounted on the guide rail 23, and the first image sensor 16 is mounted on the carriage 24. The image sensor driving unit 17 includes a motor and a power transmission unit that transmits power from the motor to the carriage 24.

  The first image sensor 16 is movable along the first platen 21, and reads the image of the reading object supported by the first platen 21 while moving along the first platen 21. On the lower surface of the ADF unit 4, a pressing unit 20 that presses the reading object toward the first platen 21 is provided.

  The second image sensor 18 is a sensor having a plurality of reading elements arranged in one direction, and CIS is adopted in this embodiment. The second transport unit 19 has a configuration that the ADF unit 4 has, and is configured to be capable of transporting a sheet, which is an image reading target, downstream in the transport direction along a predetermined second transport path. More specifically, as shown in FIG. 2, the second transport unit 19 includes a suction roller 25, a separation roller 26A, a separation piece 26B, a first transport roller 27A, a first pinch roller 27B, a second transport roller 28A, and a second transport roller. A pinch roller 28B, a discharge roller 29A, a discharge pinch roller 29B, and the like are provided.

  The first image sensor 16 can move to a position facing the second platen 22, stops at a position facing the second platen 22, is transported by the second transport unit 19, and is in contact with the second platen 22. The image of the first surface of the passing sheet is read. The second image sensor 18 is disposed at a position facing the third platen 31, and reads an image on the second surface of the sheet that is conveyed by the second conveyance unit 19 and is in contact with the third platen 31. .

[Details of ADF unit opening / closing mechanism and seat support]
As shown in FIG. 3, the ADF unit 4 includes a pair of first hinge portions 51, 51 (this specification) arranged with a space in the left-right direction (corresponding to an example of the first direction in this specification). It is connected to the reading unit 3 via a hinge). Thereby, the ADF unit 4 is configured to be rotatable about an axis R1 extending in the left-right direction. As the ADF unit 4 rotates about the axis R1, the ADF unit 4 is displaced between a closed position shown in FIG. 4A and an open position shown in FIG. 4B. 4A and 4B, only one first hinge part 51 appears, but the other first hinge part 51 has substantially the same structure as one first hinge part 51. ing.

  When the ADF unit 4 is in the closed position, the ADF unit 4 covers the reading unit 3. In this state, the reading object supported by the first platen 21 can be pressed toward the first platen 21 by the pressing portion 20 provided in the ADF unit 4. In this state, the second conveyance unit 19 incorporated in the ADF unit 4 can be used, and the sheet conveyed by the second conveyance unit 19 can be brought into contact with the second platen 22.

  On the other hand, when the ADF unit 4 is in the open position, the ADF unit 4 is separated from the reading unit 3. In this state, since the upper part of the first platen 21 is opened, the user sets the reading object on the first platen 21 or places the reading object supported by the first platen 21 on the first platen 21. 21 can be removed.

  The reading unit 3 includes a pair of second hinge portions 52 and 52 arranged at intervals in the left-right direction (however, one of the second hinge portions 52 is not shown in FIGS. 4A and 4B). It is connected to the main unit 2 via the figure. Accordingly, the reading unit 3 is configured to be rotatable about an axis R2 (see FIG. 3) extending in the left-right direction. The axis R2 extends in parallel with the axis R1. One of the second hinge parts 52 is almost directly below one of the first hinge parts 51, and the other second hinge part 52 is the other first hinge part 51 (FIGS. 3, 4A), and FIG. 4 (B))). The other second hinge portion 52 has a structure substantially similar to the one second hinge portion 52.

  By rotating the reading unit 3 around the axis R2, an opening (not shown) provided in the main unit 2 can be opened and closed. When the opening provided in the main unit 2 is opened, maintenance (for example, jam processing) of each unit (for example, the image forming unit 13) disposed inside the main unit 2 through the opening is performed. Can be implemented.

  As shown in FIG. 5, the first hinge portion 51 includes a first member 511 and a second member 512. A front end (corresponding to an example of the first end in the present specification) and a rear end (referred to in the present specification) that are both ends of the reading unit 3 in the front-rear direction (corresponding to an example of the second direction in the present specification). (Corresponding to an example of the second end), a holding portion 56 is provided at a position near the rear end. The holding unit 56 is an opening that is recessed downward from the upper surface of the reading unit 3, and the first member 511 is inserted into the holding unit 56 and held in a vertically movable state. The second member 512 is attached to the first member 511 so as to be rotatable. The second member 512 is attached to the ADF unit 4 so as not to be displaced, and is displaced integrally with the ADF unit 4.

  By providing the first member 511 and the holding portion 56 as described above, the ADF unit 4 can be displaced upward together with the first hinge portions 51 and 51. Therefore, when a thick reading object (for example, a book document) is set on the first platen 21, the ADF unit 4 is displaced upward together with the first hinge portions 51 and 51 to thereby read the thick reading object. The object can be covered with the ADF unit 4.

  At the rear end of the reading unit 3, as shown in FIGS. 6A, 6B, and 7, a sheet support portion 61 capable of supporting a recording medium is disposed. The seat support portion 61 is configured to be rotatable about an axis R2 extending in the left-right direction. That is, in the present embodiment, the sheet support portion 61 and the reading unit 3 have the same rotation center (that is, the rotation center is on the same axis R2).

  When the sheet support part 61 rotates about the axis R2, the sheet support part 61 is displaced between the storage position shown in FIG. 6A and the use position shown in FIG. 6B. When the sheet support 61 is in the use position, a plurality of recording media can be set on the sheet support 61. The first transport unit 12 is configured to be able to transport the recording medium from the sheet support unit 61 to the downstream side in the transport direction along the first transport path. As shown in FIG. 7, the main unit 2 is provided with an introduction port 63 for introducing the recording medium into the first transport path, and when the sheet support portion 61 is in the use position, the introduction port described above is used. 63 is opened. The user can set the recording medium on the sheet support portion 61 by inserting the recording medium into the introduction port 63.

  A supply roller 65 is disposed in the vicinity of the introduction port 63. The supply roller 65 is attached to the holder 67 and is supported so as to be rotatable about an axis R3 extending in parallel with the left-right direction. The holder 67 is supported by the sheet support portion 61 so as to be swingable about an axis R4 extending in parallel with the left-right direction. Therefore, the supply roller 65 can rotate about the axis R3 and can swing about the axis R4. Drive gears 691, 692, 693, 694 are attached to the holder 67. The rotation center of the drive gear 691 coincides with the swing center (axis line R4) of the holder 67, and the rotation center of the drive gear 694 coincides with the rotation center (axis line R3) of the supply roller 65.

  When the first conveyance unit 12 is operated and power from a motor (not shown) is transmitted to the drive gear 691, the power is transmitted via the drive gear 692 and the drive gear 693 as the drive gear 691 is rotationally driven. It is transmitted to the drive gear 694. The supply roller 65 is configured to rotate integrally with the drive gear 694, and when the supply roller 65 is driven to rotate, the recording medium set on the sheet support portion 61 is a path (shown by a broken line in FIG. It is conveyed along the first conveyance path) downstream in the conveyance direction. At this time, if a plurality of recording media are set on the sheet support portion 61, the plurality of recording media are transported one by one downstream in the transport direction. The above-described image forming unit 13 and the like are disposed on the downstream side in the transport direction with respect to the path indicated by the broken line in FIG. 7, and an image is formed on the recording medium. Since the structure itself of the image forming unit 13 is well known, further explanation is omitted.

[Details of wiring between main unit and ADF unit]
As shown in FIGS. 8A and 8B, the multi function device 1 is a first flat cable 71 (corresponding to an example of a flat cable referred to in this specification. In this embodiment, an FFC (Flexible Flat Cable). ) And a first wire harness 72 (corresponding to an example of a cable other than the flat cable referred to in this specification). The first flat cable 71 and the first wire harness 72 include an electrical mechanism (the control unit 11 in the case of the present embodiment) provided in the main unit 2 and an electrical mechanism (the book) provided in the ADF unit 4. In the case of the embodiment, the wiring connects the second image sensor 18 and the second transport unit 19).

  In addition, as illustrated in FIG. 8B, the multi function device 1 includes a second flat cable 73 (in this embodiment, FFC (Flexible Flat Cable) is used) and a second wire harness 74. The second flat cable 73 and the second wire harness 74 are an electric mechanism (control unit 11 in the case of the present embodiment) provided in the main unit 2 and an electric mechanism (this book) provided in the reading unit 3. In the case of the embodiment, the wiring connects the first image sensor 16 and the image sensor driving unit 17).

  The first flat cable 71 and the first wire harness 72 are, as shown in FIGS. 8A and 8B, a first extension that extends in the vertical direction between the main unit 2 and the ADF unit 4. It has existing portions 71A and 72A. Further, as shown in FIGS. 8A and 9, the first flat cable 71 and the first wire harness 72 are curved forward from the upper ends of the first extending portions 71A and 72A and extend in the front-rear direction. Two extending portions 71B and 72B are provided.

  The upper end portions of the first extending portions 71A and 72A (that is, the portions continuing to the second extending portions 71B and 72B) are resin parts that constitute the ADF unit 4, as shown in FIG. It is arranged at a location defined by the ADF base portion 4A. Further, the first extending portions 71A and 72A are defined by a scanner base portion 3A which is a resin component constituting the reading unit 3, as shown in FIG. Has been introduced to

  As shown in FIG. 8B, the scanner base portion 3A is integrally formed with a first wall portion 75 and a second wall portion 76 that face each other with a space in the left-right direction. The first extending portions 71 </ b> A and 72 </ b> A are disposed between the first wall portion 75 and the second wall portion 76. In the first extending portion 71A, the first flat cable 71 is disposed such that the width direction is along the left-right direction and the thickness direction is along the front-rear direction. A region where the first extending portions 71 </ b> A and 72 </ b> A are disposed and a holding portion 56 are provided at positions adjacent to each other across the first wall portion 75.

  As shown in FIG. 10A and FIG. 10B, the scanner base portion 3A is provided with a first isolation portion 81. The first isolation portion 81 is a wall extending in the left-right direction and the vertical direction, and isolates the first flat cable 71 and the first wire harness 72 in the first extension portions 71A, 72A. Thereby, the 1st flat cable 71 and the 1st wire harness 72 are arrange | positioned so that it may not mutually contact.

  As shown in FIGS. 8A, 9, and 11, the ADF base portion 4 </ b> A is provided with a second isolation portion 82. The 2nd isolation | separation part 82 is a wall extended in the front-back direction and an up-down direction, and isolates the 1st flat cable 71 and the 1st wire harness 72 in 2nd extension part 71B, 72B. Thereby, the 1st flat cable 71 and the 1st wire harness 72 are arrange | positioned so that it may not mutually contact.

  As shown in FIGS. 9 and 10B, the first flat cable 71 and the first wire harness 72 are curved so as to bend in a shape that makes a U-turn upward from the lower ends of the first extending portions 71A and 72A. 71C and 72C. When the ADF unit 4 is displaced upward with respect to the reading unit 3, when the first extending portions 71A and 72A are displaced upward following the ADF unit 4, the curved portions 71C and 72C are displaced while being deformed. Thereby, it can suppress that the tension | tensile_strength which acts on the 1st flat cable 71 and the 1st wire harness 72 increases.

  As shown in FIG. 10A, the scanner base portion 3A is provided with a third isolation portion 83, a fourth isolation portion 84, and a fifth isolation portion 85. The third isolation portion 83 is a wall that is continuous with the first isolation portion 81 and extends in the left-right direction and the vertical direction, and isolates the first flat cable 71 and the second wire harness 74. Thereby, the 1st flat cable 71 and the 2nd wire harness 74 are arrange | positioned so that it may not mutually contact. The fourth isolation portion 84 is a wall that is provided in front of the first isolation portion 81 and the third isolation portion and extends in the left-right direction and the vertical direction, and isolates the first flat cable 71 and the second flat cable 73. doing. Thereby, the 1st flat cable 71 and the 2nd flat cable 73 are arrange | positioned so that it may not mutually contact. The fifth isolation portion 85 is a wall that is provided behind the first isolation portion 81 and the third isolation portion and extends in the front-rear direction and the vertical direction, and isolates the first wire harness 72 and the second wire harness 74 from each other. doing. Thereby, the 1st wire harness 72 and the 2nd wire harness 74 are arrange | positioned so that it may not mutually contact. Further, as shown in FIG. 11, the scanner base portion 3 </ b> A is provided with a sixth isolation portion 86. The sixth isolation part 86 is a wall extending in the front-rear direction and the vertical direction at a position adjacent to the holding part 56 and isolates the second flat cable 73 and the second wire harness 74. Thereby, the 2nd flat cable 73 and the 2nd wire harness 74 are arrange | positioned so that it may not mutually contact.

  By the way, as shown in FIG. 12, the first member 511 included in the first hinge portion 51 has the first surface 511 </ b> A included in the first member 511 facing the front end of the reading unit 3 and the second member 511 included in the first member 511. The surface 511 </ b> B is held by the holding unit 56 in a state where the surface 511 </ b> B faces the rear end of the reading unit 3. With respect to the first hinge portion 51, the first extending portions 71 </ b> A and 72 </ b> A have a position P <b> 2 where the rear end of the reading unit 3 is located from a position P <b> 1 where the first surface 511 </ b> A of the first member 511 is located. It is arranged within the range.

  Further, in the first extending portions 71A and 72A, the first flat cable 71 and the first wire harness 72 are arranged with an interval in the front-rear direction. Further, in the first extending portions 71A and 72A, the arrangement range A1 of the first flat cable 71 and the arrangement range A2 of the first wire harness 72 in the left-right direction are viewed from the front-rear direction as shown in FIG. Are in overlapping positions. Moreover, about the left-right direction, 1st extension part 71A, 72A has arrangement | positioning range A1 of the 1st flat cable 71, and arrangement | positioning range A2 of the 1st wire harness 72 of the 1st hinge part 51 seeing from the front-back direction. It is between the arrangement range A3 and the arrangement range A4 of the sheet support portion 61.

[effect]
According to the MFP 1 configured as described above, in the first extending portions 71A and 72A as described above, the first flat cable 71 and the first wire harness 72 are disposed in the front-rear direction between each other. They are arranged at overlapping positions as seen from the front-rear direction with an interval. Therefore, compared with the case where these cables are arranged at a position where they are not overlapped with a gap in the left-right direction when viewed from the front-rear direction, the dimensions occupied by the area required for the arrangement of the first flat cable 71 and the first wire harness 72 Can be reduced in the left-right direction, and the size in the left-right direction of the multifunction machine 1 can be made compact.

  In the case of the MFP 1 of the present embodiment, the first extending portions 71A and 72A are defined by the first wall portion 75 and the second wall portion 76 described above. The portions 71A and 72A can be held at designed positions. Further, in the first extending portions 71A and 72A, the first flat cable 71 is arranged such that the width direction is along the left-right direction and the thickness direction is arranged along the front-rear direction. Compared with the case where the width direction of one flat cable 71 is arranged along the front-rear direction, the accommodation area of the first extending portions 71A, 72A can be made compact in the front-rear direction.

  In the case of the multifunction machine 1 according to the present embodiment, the first wall 75 and the second wall 76 are integrally formed with the scanner base 3 </ b> A, and therefore the first wall 75 and the second wall 76 are provided. In this case, it is not necessary to use a separate component from the scanner base portion 3A, and the number of components and the number of assembly steps can be reduced.

  In the case of the multifunction machine 1 according to the present embodiment, the region where the first extending portions 71 </ b> A and 72 </ b> A are disposed and the holding portion 56 are provided at positions adjacent to each other with the first wall portion 75 interposed therebetween. Therefore, as compared with the case where the region where the first extending portions 71A and 72A are arranged and the holding portion 56 are provided at positions separated by more than the thickness of the first wall portion 75, the lateral dimension of the apparatus is made compact. Can do.

  In the case of the multifunction machine 1 according to the present embodiment, the contact between the first flat cable 71 and the first wire harness 72 is suppressed by the first separator 81. Therefore, it is possible to suppress the communication via the first flat cable 71 from being affected due to noise generated from the first wire harness 72 or the like.

  In the case of the multifunction machine 1 according to the present embodiment, the contact between the first flat cable 71 and the first wire harness 72 is suppressed by the second separator 82. Therefore, it is possible to suppress the communication via the first flat cable 71 from being affected due to noise generated from the first wire harness 72 or the like.

[Supplement]
As described above, the image reading apparatus has been described by way of exemplary embodiments. However, the above-described embodiments are merely illustrated as one aspect of the present invention. That is, the present invention is not limited to the exemplary embodiments described above, and can be implemented in various forms without departing from the technical idea of the present invention.

  For example, in the above-described embodiment, the reading unit 3 that can be rotated with respect to the main body unit 2 is provided, but whether or not the reading unit 3 is configured to be rotatable is arbitrary. Further, whether or not the first unit referred to in this specification is constituted by the main unit 2 and the reading unit 3 is also arbitrary.

  Moreover, in the said embodiment, although ADF unit 4 provided with the function as ADF was illustrated as an example of the second unit referred to in this specification, whether the second unit referred to in this specification has the function as ADF or not. Is optional. For example, the second unit referred to in the present specification may be configured as a cover portion that covers a platen included in a flatbed image scanner.

  Alternatively, whether or not the first unit referred to in this specification includes a configuration as a flatbed type image scanner is arbitrary, and the portion that houses the image forming unit 13 is the first unit or image forming unit referred to in this specification. The cover unit that is opened when performing maintenance on the unit 13 may be the second unit referred to in this specification. That is, whether or not it is configured as the multifunction device 1 is arbitrary, and the present invention may be applied to an apparatus configured as a single-function printer.

As is clear from the exemplary embodiments described above, the image reading apparatus described in this specification may further include the following configurations.
First, in the image reading apparatus described in the present specification, the first extension portion is disposed between the first wall portion and the second wall portion facing each other with a gap in the first direction. In the extending portion, the flat cable may be disposed such that the width direction is along the first direction and the thickness direction is along the second direction.

  According to the image reading apparatus configured in this way, the first extending portion is positioned as designed because the first wall portion and the second wall portion define the arrangement region of the first extending portion. Can be held in. Further, in the first extending portion, the flat cable is arranged so that the width direction is along the first direction and the thickness direction is arranged along the second direction, so the width direction of the flat cable is Can be made compact in the second direction with respect to the accommodation area of the first extension portion, as compared with the case where the first extension portion is arranged along the second direction.

  Further, in the image reading apparatus described in the present specification, a resin-made scanner base portion configured to be able to support a platen and a reading portion that constitute a support surface is provided on an upper portion of the first unit. The wall portion and the second wall portion may be integrally formed with the scanner base portion.

  According to the image reading apparatus configured as described above, in providing the first wall portion and the second wall portion as described above, it is not necessary to use a separate component from the scanner base portion. The number of assembly steps can be reduced.

In the image reading apparatus described in this specification, a region where the first extension portion is disposed and a holding portion may be provided at positions adjacent to each other with the first wall portion interposed therebetween.
According to the image reading apparatus configured as described above, since the region where the first extension portion is disposed and the holding portion are provided at positions adjacent to each other with the first wall portion interposed therebetween, the first extension portion is disposed. The size in the first direction of the apparatus can be made compact as compared with the case where the region and the holding portion are provided at positions separated by more than the thickness of the first wall portion.

Further, in the image reading apparatus described in this specification, the wiring may have a curved portion that curves in a shape that makes a U-turn upward from the lower end of the first extending portion.
According to the image reading apparatus configured in this way, when the second unit is displaced upward, even if the first extension portion is displaced upward together with the second unit, the bending portion is one end of the bending portion. The other end of the bending portion is deformed so as to follow the first extending portion without displacing the position. Therefore, it is possible to suppress an extra load on the wiring ahead of one end of the bending portion.

  Further, in the image reading apparatus described in this specification, a first isolation portion that isolates the flat cable and a cable other than the flat cable may be provided in a region where the first extension portion is disposed.

  According to the image reading apparatus configured as described above, the contact between the flat cable and a cable other than the flat cable is suppressed by the first isolation portion. Therefore, it is possible to suppress the influence on communication via the flat cable due to noise generated from a cable other than the flat cable.

  Further, in the image reading apparatus described in this specification, the first unit is provided at the second end, and a sheet support unit capable of supporting the sheet, and the sheet supported by the sheet support unit along a predetermined conveyance path. A first conveying portion and an image forming portion that forms an image on a sheet conveyed by the conveying portion, and the first extending portion is between the hinge portion and the sheet supporting portion in the first direction. May be provided.

  Further, in the image reading apparatus described in the present specification, the wiring has a second extending portion that curves from the upper end of the first extending portion and extends in the second direction, and the second extending portion is disposed. A second isolation part that isolates the flat cable and a cable other than the flat cable may be provided in the area.

  According to the image reading apparatus configured as described above, the contact between the flat cable and a cable other than the flat cable is suppressed by the second separator. Therefore, it is possible to suppress the influence on communication via the flat cable due to noise generated from a cable other than the flat cable.

  DESCRIPTION OF SYMBOLS 1 ... MFP, 2 ... Main body unit, 3 ... Reading unit, 3A ... Scanner base part, 4 ... ADF unit, 4A ... ADF base part, 11 ... Control part, 12 ... First conveyance part, 13 ... Image forming part, DESCRIPTION OF SYMBOLS 14 ... LAN communication part, 15 ... Operation panel, 16 ... 1st image sensor, 17 ... Image sensor drive part, 18 ... 2nd image sensor, 19 ... 2nd conveyance part, 20 ... Press part, 21 ... 1st platen, 22 ... second platen, 23 ... guide rail, 24 ... carriage, 25 ... suction roller, 26A ... separation roller, 26B ... separation piece, 27A ... first conveying roller, 27B ... first pinch roller, 28A ... second conveying roller , 28B ... second pinch roller, 29A ... discharge roller, 29B ... discharge pinch roller, 31 ... third platen, 51 ... first hinge part, 511 ... first member, 511A ... first surface 511B ... Second surface, 512 ... Second member, 52 ... Second hinge portion, 56 ... Holding portion, 61 ... Sheet support portion, 63 ... Introduction port, 65 ... Supply roller, 67 ... Holder, 691-694 ... Drive gear 71 ... 1st flat cable, 71A ... 1st extension part, 71B ... 2nd extension part, 71C ... Curved part, 72 ... 1st wire harness, 72A ... 1st extension part, 72B ... 2nd extension Part 72C ... curved part 73 ... second flat cable 74 ... second wire harness 75 ... first wall part 76 ... second wall part 81 ... first isolation part 82 ... second isolation part 83 ... 3rd isolation part, 84 ... 4th isolation part, 85 ... 5th isolation part, 86 ... 6th isolation part.

Claims (6)

A first unit including a support surface that supports a reading object; and a reading unit that is provided below the support surface and that can read an image of the reading object supported by the support surface;
A second unit connected to the first unit via a hinge portion and configured to be displaceable to a closed position covering the support surface and an open position spaced apart from the support surface;
Wiring for connecting the electrical mechanism provided in the first unit and the electrical mechanism provided in the second unit ;
With
The hinge portion includes a first member and a second member that is rotatably attached to the first member, and the first member is attached to the first unit so as to be vertically movable. In addition, the second member is attached to the second unit so as not to be displaceable, so that the second unit can rotate around an axis extending in the first direction with respect to the first unit, and Movably linked,
In the first unit, among the first end and the second end, which are both ends in a second direction parallel to the support surface and perpendicular to the first direction, the first member has a portion closer to the second end. The first member has a first surface that the first member has toward the first end, and a second surface that the first member has. It is held by the holding part in a state facing two ends,
The wiring has a first extending portion extending in a vertical direction between the first unit and the second unit, and the first extending portion is the first extending in the second direction. Arranged in a range from a position where the first surface of the member is located to a position where the second end of the first unit is located;
The wiring includes at least one flat cable and a cable other than the flat cable. In the first extension portion, the flat cable and a cable other than the flat cable are interposed between each other. It is arranged at an overlapping position as seen from the second direction with an interval between them,
The first extension portion is disposed between the first wall portion and the second wall portion facing each other with a gap in the first direction, and in the first extension portion, the flat cable is The width direction is arranged along the first direction, and the thickness direction is arranged along the second direction,
On the upper part of the first unit, a resin-made scanner base portion configured to be able to support the platen that constitutes the support surface and the reading unit is provided,
The image reading apparatus in which the first wall portion and the second wall portion are integrally formed with the scanner base portion . The image reading apparatus according to claim 1 ,
An image reading apparatus in which a region where the first extension portion is arranged and the holding portion are provided at positions adjacent to each other with the first wall portion interposed therebetween . The image reading apparatus according to claim 1 or 2 ,
The image reading apparatus according to claim 1, wherein the wiring has a curved portion that curves in a U-turn shape upward from a lower end of the first extending portion. An image reading apparatus according to any one of claims 1 to 3 ,
An image reading apparatus, wherein a first isolation part that isolates the flat cable and a cable other than the flat cable is provided in an area where the first extension part is disposed. An image reading apparatus according to any one of claims 1 to 4 , wherein
The first unit is provided at the second end and is capable of supporting a sheet, a conveyance unit that conveys a sheet supported by the sheet support unit along a predetermined conveyance path, and the conveyance unit. An image forming unit that forms an image on the sheet conveyed by
The first extension portion is an image reading device provided between the hinge portion and the sheet support portion in the first direction. An image reading apparatus according to any one of claims 1 to 5 ,
The wiring has a second extending portion that curves from the upper end of the first extending portion and extends in the second direction,
An image reading apparatus, wherein a second isolation part that isolates the flat cable and a cable other than the flat cable is provided in an area where the second extension part is disposed.

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