JP6390597B2 - Image forming apparatus - Google Patents

Description

  The present invention relates to an image forming apparatus including an information reading unit such as an IC reader that reads information from an IC card.

  An image forming apparatus such as a multifunction peripheral may be provided with an information reading unit such as an IC reader that can read user information from an IC card. In addition, in an image forming apparatus in which an image reading unit is disposed above a main body unit including an image forming unit, an information reading unit may be housed in the front portion of the image reading unit (see, for example, Patent Document 1). . The cable of the information reading unit is accommodated on the back side of the information reading unit.

JP 2014-202911 A

  However, in the configuration in which the cable of the information reading unit is accommodated on the back side of the information reading unit, the size of the image reading unit is unnecessarily expanded, and thus downsizing of the image forming apparatus is hindered.

  An object of the present invention is to provide an image forming apparatus capable of suppressing an unnecessary expansion of the size of the image forming apparatus in a configuration in which an information reading unit is accommodated in the front part of the image reading unit.

  An image forming apparatus according to an aspect of the present invention includes an image reading unit, an information reading unit, a reading mounting unit, and a wiring housing unit. The image reading unit is disposed above a main body unit including an image forming unit that forms an image on a sheet, and reads an image from a document. The information reading unit is accommodated in a front surface portion of the image reading unit and reads user information. The reading mounting portion is formed on the front surface portion, and the information reading portion is mounted thereon. The wiring accommodating portion is formed adjacent to the reading mounting portion on the front surface portion, and accommodates a cable connected to the information reading portion.

  According to the present invention, there is provided an image forming apparatus capable of suppressing unnecessary expansion of the size of the image forming apparatus in a configuration in which the information reading unit is accommodated in the front part of the image reading unit.

FIG. 1 is a diagram showing an image forming apparatus according to an embodiment of the present invention. FIG. 2 is a diagram showing a main part of the image forming apparatus according to the embodiment of the present invention. FIG. 3 is a view showing a cover member of the accommodating portion of the image forming apparatus according to the embodiment of the present invention. FIG. 4 is a diagram illustrating a mounting state of the cover member of the housing portion of the image forming apparatus according to the embodiment of the present invention. FIG. 5 is a diagram illustrating a mounting state of the cover member of the operation display unit of the image forming apparatus according to the embodiment of the present invention. FIG. 6 is a schematic plan view showing a mounting state of the cover member of the storage unit and the operation display unit of the image forming apparatus according to the embodiment of the present invention. FIG. 7 is a view showing a cover member of the option mounting portion of the image forming apparatus according to the embodiment of the present invention. FIG. 8 is a diagram illustrating a state where the cover member is removed from the image forming apparatus according to the embodiment of the present invention. FIG. 9 is a diagram illustrating a mounting state of the cover member of the option mounting portion of the image forming apparatus according to the embodiment of the present invention. FIG. 10 is a diagram showing a mounted state of the option unit of the image forming apparatus according to the embodiment of the present invention. FIG. 11 is a diagram showing a non-mounted state of the option unit of the image forming apparatus according to the embodiment of the present invention. FIG. 12 is a diagram showing a fixing structure of the option unit of the image forming apparatus according to the embodiment of the present invention. FIG. 13 is an exploded view of an optional unit of the image forming apparatus according to the embodiment of the present invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings for understanding of the present invention. In addition, the following embodiment is an example which actualized this invention, Comprising: The thing of the character which limits the technical scope of this invention is not.

[Schematic Configuration of Image Forming Apparatus 100]
A schematic configuration of an image forming apparatus 100 according to an embodiment of the present disclosure will be described with reference to FIG. In addition, below, it demonstrates using the up-down direction D11, the left-right direction D12, and the front-back direction D13 which are shown by each figure.

  The image forming apparatus 100 includes an ADF 1, an image reading unit 2, an image forming unit 3, a paper feed cassette 4, an operation display unit 5, an information reading unit 6, an in-body discharge unit 11, and the like. The image forming apparatus 100 is a multifunction machine having a plurality of functions such as a scan function, a print function, a facsimile function, and a copy function. The image forming apparatus 100 also includes a control unit that executes a control process for realizing each of the functions, a communication interface that executes a communication process with an external device, and the like.

  The ADF 1 is an automatic document feeder that includes a document setting unit, a conveyance roller, a document pressing unit, and a paper discharge unit, and conveys a document read by the image reading unit 2. The ADF 1 is disposed above the image reading unit 2 and can be opened and closed with respect to the image reading unit 2. In addition, the ADF 1 is provided with a grip portion 1A used for opening and closing the ADF 1 by the user. In FIG. 2 and subsequent figures, the description of ADF 1 is omitted.

  The image reading unit 2 is disposed above the image forming unit 3 and the support housing 12 that constitute the main body of the image forming apparatus 100, and the image forming unit is interposed between the image reading unit 2 and the image forming unit 3. An in-cylinder discharge unit 11 for discharging the sheet after image formation by 3 is provided.

  The image reading unit 2 includes a document table 2A (see FIG. 2 or 4), a light source, a mirror, an optical lens, and a CCD (Charge Coupled Device). The image reading unit 2 can read an image from a document conveyed by the ADF 1 or a document placed on the document table 2A and output it as image data.

  The image forming unit 3 forms an image on a sheet supplied from a sheet feeding cassette 4 in which the sheet is stored based on image data read by the image reading unit 2 or image data input from an external information processing apparatus. An electrophotographic or inkjet image forming unit. Specifically, when the image forming unit 3 is an electrophotographic image forming unit, the image forming unit 3 includes a photosensitive drum, a charging device, an optical scanning device (LSU), a developing device, a transfer roller, a cleaning device, and Includes a fixing roller.

  The operation display unit 5 includes a touch panel 51 that displays various types of information such as an operation screen and receives user operations, and a hard key 52 such as a start key. The operation display unit 5 is rotatably supported by the support housing 12 of the image forming apparatus 100. For example, the operation display unit 5 rotates between a first posture in which the surface of the operation display unit 5 (the surface of the touch panel 51) is parallel to the vertical plane and a second posture in which the surface of the operation display unit 5 is parallel to the horizontal plane. Is possible.

  Further, the operation display unit 5 can hold the posture at an arbitrary position between the first posture and the second posture. The first posture and the second posture are not limited to this. For example, the first posture may be a state where the surface of the operation display unit 5 is slightly inclined with respect to the vertical plane, or a state where the surface is inclined about 15 degrees with respect to the vertical plane, for example. Similarly, the second posture may be a state where the surface of the operation display unit 5 is slightly inclined with respect to the horizontal plane, or a state where the surface is inclined about 15 degrees with respect to the horizontal plane.

  The information reading unit 6 is an IC reader that can read user information stored in, for example, an IC card by non-contact communication. Specifically, the user stands in front of the image forming apparatus 100 and causes the information reading unit 6 to read his / her IC card to log in to the image forming apparatus 100 and start using the image forming apparatus 100. . The information reading unit 6 may be a fingerprint reading unit that can read a user's fingerprint, for example.

  The information reading unit 6 is accommodated in the front surface portion 21 of the image reading unit 2. Specifically, the front portion 21 of the image reading portion 2 is formed with a storage portion 8 in which the information reading portion 6 can be stored. In addition, a first cover member 7, which is a smoke cover such as gray or black, is detachably provided in front of the housing portion 8 of the front surface portion 21. Therefore, the information reading unit 6 is covered with the first cover member 7 and is not exposed, and the appearance of the image forming apparatus 100 is not impaired. The first cover member 7 is a resin member formed of ABS resin or the like, and the information reading unit 6 can read information from an external IC card via the first cover member 7. .

  In addition, an optional mounting portion 10 is provided on the left side of the storage portion 8 in the front surface portion 21 of the image reading portion 2. The option mounting unit 10 is detachably attachable to an option unit 101 (see FIG. 10) such as a mounting table on which an electronic device 102 such as a keyboard is mounted. The option unit 101 will be described in detail later.

  A third cover member 9, which is a gray or black smoke cover similar to the first cover member 7, is detachably attached to the option mounting portion 10 in front of the option mounting portion 10 of the front surface portion 21. Therefore, the option mounting portion 10 is covered with the third cover member 9 and is not exposed, and the appearance of the image forming apparatus 100 is not impaired. The third cover member 9 is a resin member formed of ABS resin or the like.

  In the image forming apparatus 100, the first cover member 7 and the accommodating portion 8, the third cover member 9, and the optional mounting portion 10 are arranged in parallel in the left-right direction D 12 on the front surface portion 21 of the image reading portion 2. 21 is entirely covered with the first cover member 7 and the third cover member 9. The third cover member 9 may be omitted, and the first cover member 7 may have a shape that covers the entire front surface portion 21 as another embodiment.

  By the way, as a method of attaching the first cover member 7 to the front surface portion 21 of the image reading unit 2, the first cover is formed by engagement or abutment of a locking portion provided on each of the front surface portion 21 and the first cover member 7. A configuration in which the member 7 is attached to the front surface portion 21 is conceivable. However, in the state in which the first cover member 7 is mounted by engagement or contact as described above, the first cover member 7 may fall off when vibration or impact occurs. Note that if the first cover member 7 is fixed to the front surface portion 21 of the image reading unit 2 by screwing the screw, it is possible to prevent the first cover member 7 from falling off. In this case, the screw is exposed. Thus, the appearance of the image forming apparatus 100 is impaired. On the other hand, in the image forming apparatus 100 according to the present embodiment, the first cover member 7 of the information reading unit 6 can be attached and the dropout of the first cover member 7 can be suppressed without impairing the appearance. It is.

  In addition, the information reading unit 6 is stored in the storage unit 8 of the front surface portion 21 of the image reading unit 2, but in the image forming apparatus 100, a plurality of predetermined types of information reading units 6 can be selectively used. The cable 61 may be long depending on the model of the information reading unit 6. In contrast, a configuration in which the cable 61 of the information reading unit 6 can be accommodated on the back side of the information reading unit 6 is conceivable. In this case, the size of the image reading unit 2 in the front-rear direction D13 is unnecessarily expanded. Miniaturization of the image forming apparatus 100 is hindered. In contrast, in the image forming apparatus 100 according to the present embodiment, unnecessary expansion of the size of the image forming apparatus 100 can be suppressed in the configuration in which the information reading unit 6 is accommodated in the front surface portion 21 of the image reading unit 2. It is.

  Hereinafter, the details of the accommodating portion 8 and the option mounting portion 10 will be described with reference to FIGS. FIG. 2 shows a state in which the first cover member 7 is removed from the accommodating portion 8 of the front surface portion 21.

  First, the accommodating part 8 is demonstrated, referring FIGS.

  As shown in FIG. 2, in the accommodating portion 8 of the front surface portion 21, a reading attachment portion 81 to which the information reading portion 6 is attached and a cable 61 of the information reading portion 6 are accommodated in order from left to right. A wiring housing portion 82 is formed adjacent to the wiring housing portion 82. The information reading unit 6 has a substantially rectangular outer shape when viewed from the front, and the longitudinal direction of the reading mounting unit 81 is parallel to the juxtaposed direction of the reading mounting unit 81 and the wiring housing unit 82 (left-right direction D12). .

  Similarly, the longitudinal direction of the wiring housing portion 82 is also parallel to the parallel mounting direction of the reading mounting portion 81 and the wiring housing portion 82 (left-right direction D12). On the other hand, the dimension in the short side direction (vertical direction D11) of the reading mounting portion 81 and the wiring housing portion 82 is equal to or smaller than the dimension in the vertical direction D11 of the image reading unit 2. As described above, the storage unit 8 is a region formed by effectively using the size of the front surface portion 21 of the image reading unit 2 in the longitudinal direction (left-right direction D12).

  Accordingly, for example, the length of the image forming apparatus 100 in the front-rear direction D13 is unnecessary as compared with the case where the reading mounting unit 81 and the wiring housing unit 82 are provided side by side in the front-rear direction D13 (depth direction of the image reading unit 2). Expansion is suppressed. In addition, unnecessary extension of the length of the image reading unit 2 in the vertical direction D11 is suppressed as compared to the case where the longitudinal directions of the reading mounting unit 81 and the wiring housing unit 82 are parallel to the vertical direction D11. Therefore, in the image forming apparatus 100, the increase in size of the apparatus due to the installation of the reading mounting unit 81 and the wiring housing unit 82 is suppressed.

  Further, in the accommodating portion 8 of the front surface portion 21, a connection portion 83 to which the cable 61 of the information reading portion 6 is connected is provided at the right end portion on the opposite side to the reading attachment portion 81 with respect to the wiring accommodating portion 82. Yes. That is, in the accommodating portion 8, the reading mounting portion 81, the wiring accommodating portion 82, and the connecting portion 83 are sequentially arranged from the left to the right. The cable 61 is a USB cable or a LAN cable used for connection between the information reading unit 6 and the image forming apparatus 100, and the connection unit 83 is a USB terminal or a LAN terminal. In the housing portion 8, the reading mounting portion 81, the wiring housing portion 82, and the connection portion 83 may be sequentially arranged from the right to the left.

  Here, the insertion port of the connection portion 83 is directed to the left direction in which the wiring housing portion 82 is provided. Therefore, the cable 61 can be connected to the connecting portion 83 from the left side where the wiring accommodating portion 82 is provided. Thereby, for example, compared with the case where the insertion port of the connection unit 83 is directed forward, upward, or downward, unnecessary extension of the length of the image reading unit 2 in the front-rear direction D13 or the vertical direction D11 is suppressed, The image forming apparatus 100 can be downsized.

  Note that a connection portion 84 to which a cable of an electronic device 102 such as a keyboard placed on the option unit 101 mounted on the option mounting portion 10 is connected is provided at the right end portion of the housing portion 8. The cable is a USB cable or a LAN cable used for connection between the electronic device 102 and the image forming apparatus 100, and the connection unit 84 is a USB terminal or a LAN terminal.

  The cable of the electronic device 102 is inserted into the housing portion 8 from the electronic device 102 through a gap 841 formed between the first cover member 7 and the housing portion 8 and connected to the mounting portion 84, for example. Note that short-distance wireless communication such as Bluetooth (registered trademark) or NFC may be used for communication between the electronic device 102 and the image forming apparatus 100.

  The reading mounting portion 81 is formed with an L-shaped portion 811A, an L-shaped portion 811B, and a plurality of support pieces 811 that protrude forward from the lower end portion and support the information reading portion 6. The reading mounting unit 81 is provided with an adhesive member 85 such as a double-sided tape to which the back surface of the information reading unit 6 is attached. The information reading unit 6 is fixed to the reading mounting unit 81 by the adhesive member 85.

  The wiring accommodating portion 82 forms a space that can accommodate the cable 61 of the information reading portion 6 between the mounting portion 81 and the connecting portion 83 in the front surface portion 21. Specifically, the wiring housing portion 82 includes a back surface 82A, an upper surface 82B, a bottom surface 82C, a protruding portion 821, and a protruding portion 822. The protruding portion 821 protrudes downward from the upper surface 82B at a position protruding forward from the back surface 820 by a predetermined distance. The protruding portion 822 protrudes upward from the bottom surface 82C at a position protruding forward from the back surface 820 by a predetermined distance.

  Thereby, in the wiring accommodating part 82, the cable 61 of the information reading part 6 can be folded and accommodated, and the dropout of the cable 61 is suppressed by the protruding part 821 and the protruding part 822. In addition, instead of the projecting portion 821 and the projecting portion 822, it is also conceivable as another embodiment that a rib capable of winding the cable 61 around the front-rear direction D13 is formed in the wiring housing portion 82.

  Further, as shown in FIG. 2, the housing portion 8 includes an upper end and a lower end over the reading mounting portion 81, the wiring housing portion 82, and the connecting portion 83 in the juxtaposition direction (longitudinal direction of the first cover member 7). A sliding portion 221 is formed. The sliding part 221 contacts a part of the first cover member 7 when the first cover member 7 slides relative to the housing part 8.

  The sliding portion 221 at the upper end of the housing portion 8 is formed with a plurality of locking portions 222 that protrude downward from the sliding portion 221 intermittently over the parallel arrangement direction. Similarly, the sliding portion 221 at the lower end of the housing portion 8 is formed with a plurality of locking portions 223 that protrude upward from the sliding portion 221 intermittently over the parallel arrangement direction. On the back side of each of the locking portion 222 and the locking portion 223, a gap is formed in which a locking portion 72 of the first cover member 7 described later can be inserted.

  In the accommodating portion 8, a step in the vertical direction D <b> 11 is formed between the lower end portion of the reading accommodating portion 81 and the lower end portion of the wiring accommodating portion 82. This step is formed in order to retreat the wiring accommodating portion 82 upward from the operation display portion 5 disposed at a position ahead of the front surface portion 21 and suppress a useless space in the vertical direction D11. In other embodiments, the lower end portion of the reading accommodating portion 81 and the lower end portion of the wiring accommodating portion 82 are flat.

  On the other hand, as shown in FIG. 3, on the back side of the first cover member 7, sliding portions 71 are formed at the upper end and the lower end over the longitudinal direction. The sliding portion 71 contacts the sliding portion 221 of the housing portion 8 when the first cover member 7 slides relative to the housing portion 8. The sliding portion 71 at the upper end of the first cover member 7 is formed with a plurality of locking portions 72 that project downward from the sliding portion 71 intermittently over the longitudinal direction. Similarly, the sliding portion 71 at the lower end of the first cover member 7 is formed with a plurality of locking portions 73 protruding upward from the sliding portion 71 intermittently over the longitudinal direction. Also in the first cover member 7, similarly to the housing portion 8, there is a step in the vertical direction D <b> 11 between the lower end portion of the region corresponding to the reading housing portion 81 and the lower end portion of the region corresponding to the wiring housing portion 82. Is formed.

  Further, a protrusion 74 used for suppressing the drop-off of the first cover member 7 is formed at the lower right end which is a part of the first cover member 7. The protrusion 74 protrudes forward from the front surface of the first cover member 7 by a predetermined dimension (see FIGS. 4 and 6).

  Each of the locking portion 72 and the locking portion 73 of the first cover member 7 is provided corresponding to each of the locking portion 222 and the locking portion 223 of the housing portion 8. Specifically, the spacing in the left-right direction D12 where the locking portion 72 and the locking portion 222 are formed is the same, and the spacing in the left-right direction D12 where the locking portion 73 and the locking portion 223 are formed is the same. is there.

  The locking portion 72 and the locking portion 73 are the locking portions when the first cover member 7 is slid rightward after the first cover member 7 is fitted into the housing portion 8 from the front. It is located on the back side of 222 and the locking portion 223 and restricts the forward movement of the first cover member 7. Note that the rightward sliding movement of the first cover member 7 fitted in the accommodating portion 8 is locked by a locking portion 21A formed at the right end portion of the front surface portion 21, for example.

  That is, the first cover member 7 is separated from the housing portion 8 of the front surface portion 21 and the support state supported by the housing portion 8 of the front surface portion 21 by sliding movement in the left-right direction D12 with respect to the housing portion 8 of the front surface portion 21. The possible unsupported state switches. In addition, if the accommodating part 8 is the structure which can support the 1st cover member 7, the shape of the latching | locking parts 72 and 73 and the latching | locking parts 222 and 223 is not restricted to the shape demonstrated here.

  As described above, the first cover member 7 is attached to the housing portion 8 by engaging or abutting the locking portions 72 and 73 with the locking portions 222 and 223, and screwing is performed to fix the first cover member 7. Therefore, the appearance of the image forming apparatus 100 is not impaired.

  However, in the configuration in which the first cover member 7 is attached to the housing portion 8 by engagement or contact, the first cover member 7 may fall off when vibration or impact occurs. On the other hand, the image forming apparatus 100 is viewed from above with respect to the back surface portion 53 of the operation display unit 5 provided between the first cover member 7 and the operation display unit 5 disposed in front of the first cover member 7. A detachable second cover member 54 (see FIG. 5) is provided. In the image forming apparatus 100, the second cover member 54 suppresses the first cover member 7 from falling off. The back surface portion 53 is provided with wiring of the operation display portion 5 and a hinge portion that rotatably supports the operation display portion 5, and the second cover member 54 covers and conceals the back surface portion 53. Used for.

  Here, FIG. 4 shows a state where the first cover member 7 is attached to the image forming apparatus 100 and the second cover member 54 is not attached. FIG. 5 shows the image forming apparatus 100. A state in which the first cover member 7 and the second cover member 54 are mounted is shown. FIG. 6 is a plan view schematically showing the positional relationship between the first cover member 7 and the second cover member 54 in the state of FIG.

  As shown in FIGS. 4 and 6, the protrusion 74 of the first cover member 7 protrudes forward from the front surface of the first cover member 7. Further, the second cover member 54 can be attached to and detached from the back surface portion 53 of the operation display portion 5 by moving in the vertical direction D11, and the back surface side is open.

  Here, as shown in FIG. 6, the distance between the inner surfaces 542 of the left and right side walls 541 of the second cover member 54 is the same as or slightly longer than the dimension in the left-right direction D12 of the protrusion 74 of the first cover member 7. is there. Then, as shown in FIG. 5, when the second cover member 54 is attached to the back surface portion 53 after the first cover member 7 is attached to the accommodating portion 8, the protruding portion 74 becomes the inner surface of the left and right side walls 541. Between 542. The inner surface 542 is an example of a fitting portion that fits into the protruding portion 74 and restricts the sliding movement of the protruding portion 74 in the left-right direction D12.

  Accordingly, the second cover member 54 restricts the movement of the first cover member 7 in the left-right direction D12 by the contact between the protruding portion 74 of the first cover member 7 and the inner surface 542 of the second cover member 54. Note that the first cover member 7 and the second cover member 54 are provided when the second cover member 54 is attached to the back surface portion 53 after the first cover member 7 is attached to the housing portion 8. As long as the movement in the left-right direction D12 is restricted by the second cover member 54, the arrangement is not limited to that described here.

  Further, the second cover member 54 has an end on the side of the accommodating portion 8 (back side) when the second cover member 54 is attached to the back surface portion 53 after the first cover member 7 is attached to the accommodating portion 8. The portion 543 is configured to be disposed at a position in contact with or close to the front surface of the first cover member 7. Accordingly, the forward movement of the first cover member 7 is also restricted by the contact between the surface of the first cover member 7 and the end portion 543 of the second cover member 54.

  As described above, in the image forming apparatus 100, the second cover member 54 is attached to the back surface portion 53 of the operation display unit 5, and the movement of the first cover member 7 in the left-right direction D12 and the forward movement thereof are the second cover. By being regulated by the member 54, the first cover member 7 is prevented from falling off.

  5 and 6, the second cover member 54 is formed with an insertion port 56 through which a screw is inserted. As shown in FIG. A screw hole 55 is formed for screwing the second cover member 54 onto the back surface portion 53 with a screw from above. That is, the second cover member 54 is fixed to the back surface portion 53 by being fastened to the screw hole 55 of the back surface portion 53 with a fixing member such as a screw through the insertion port 56 from above.

  Thereby, since the 2nd cover member 54 is firmly fixed to the back surface part 53, the drop-off | omission of the 1st cover member 7 by the 2nd cover member 54 is also suppressed effectively. The fixing member such as the screw used for fixing the second cover member 54 is exposed, but the back surface portion 53 is positioned on the back surface of the operation display portion 5. Accordingly, since the operation display unit 5 hides from the front of the image forming apparatus 100, the exposure of the fixing member on the back surface part 53 does not impair the appearance of the image forming apparatus 100. Further, since the fixing member is screwed from above to below, the appearance of the image forming apparatus 100 in the front view of the image forming apparatus 100 with high user attention is not impaired.

  Next, the option mounting portion 10 will be described with reference to FIGS.

  As shown in FIG. 7, a plurality of locking portions 91 projecting from the upper end and the lower end are formed on the back side of the third cover member 9 in the longitudinal direction. On the other hand, the option mounting portion 10 is formed with rail portions at the upper end and the lower end in the longitudinal direction of the option mounting portion 10 (longitudinal direction of the third cover member 9).

  In place of the rail portion, a plurality of locking portions that protrude upward or downward from the rail portion intermittently in the longitudinal direction are formed in the same manner as the locking portions 222 and 223 of the housing portion 8. It may be. The third cover member 9 is also formed with a rail portion similar to the rail portion, and the third cover member 9 and the optional mounting portion 10 are engaged with the rail portions of the third cover member 9. 9 may be configured to be slidable in the left-right direction D12 with respect to the option mounting portion 10.

  Then, the third cover member 9 is moved from the left side of the option mounting portion 10 to the right direction by sliding the locking portion 91 along the rail portion of the option mounting portion 10. Installed. The forward movement of the third cover member 9 is restricted by the engagement between the locking portion 91 and the rail portion of the option mounting portion 10.

  Further, the third cover member 9 is formed with an insertion port portion 92 through which a fixing member 94 such as a screw is inserted. On the other hand, as shown in FIG. 8, a screw hole 93 into which the fixing member 94 is screwed is formed in the option mounting portion 10. As shown in FIG. 9, after the third cover member 9 is attached to the option attachment portion 10, the fixing member 94 is screwed into the screw hole 93 via the insertion port portion 92, so that the option cover is attached. It is fixed to the part 10.

  Here, as shown in FIG. 9, after the third cover member 9 is fixed to the option mounting portion 10, the fixing member 94 is the image forming apparatus in a state where the first cover member 7 is not mounted in the housing portion 8. It is exposed in front of 100.

  However, as shown in FIGS. 1 and 4, the first cover member 7 has a shape that overlaps the front of the third cover member 9 at least within a range in which the fixing member 94 can be concealed. As a result, in the image forming apparatus 100, the first cover member 7 is attached to the housing portion 8 after the third cover member 9 is fixed to the option mounting portion 10 by the fixing member 94, whereby the first cover member 7. The left end portion of the third cover member 9 overlaps the front of the right end portion of the third cover member 9 so that the fixing member 94 is concealed. Specifically, therefore, in the image forming apparatus 100, when the first cover member 7 and the third cover member 9 are attached to the front surface portion 21 of the image reading unit 2, the first cover member 7 and the third cover member 9. In any of these cases, fixing members such as screws are not exposed on the front surface, and the appearance of the image forming apparatus 100 is not impaired.

  By the way, in the option unit 101 mounted on the option mounting unit 10, if the length of the portion inserted in the front surface part 21 in the front-rear direction D13 is short, the stability of the option unit 101 mounted on the option mounting unit 10 decreases. Problem arises. In particular, the longer the dimension of the option unit 101 in the front-rear direction D13, the lower the stability of the option unit 101. However, if the length of the front surface portion 21 in the front-rear direction D13 is sufficiently secured in order to stabilize the option unit 101 in the front surface portion 21, the size reduction of the image forming apparatus 100 in the front-rear direction D13 is hindered. In contrast, in the image forming apparatus 100 according to the present embodiment, it is possible to stabilize the option unit 101 while reducing the size of the image forming apparatus 100.

  Next, the option unit 101 will be described with reference to FIGS. 10 shows a state where the third cover member 9 and the option unit 101 are attached, FIG. 11 shows a state where the third cover member 9 and the option unit 101 are not attached, and FIG. A state in which the cover unit 9 is not attached and the option unit 101 is attached is shown.

  As shown in FIG. 10, in the option mounting unit 10, the third cover member 9 may be removed and an option unit 101 such as a mounting table on which an electronic device 102 such as a keyboard is mounted may be mounted. The option unit 101 is fixed to the front surface portion 21 and the left side surface portion 22 of the image reading unit 2 as described below.

  As shown in FIGS. 10 to 12, the left side surface portion 22 of the image reading unit 2 is detachably attached to the frame member 23 and a metal frame member 23 such as aluminum provided on the left side surface portion 22. A fourth cover member 24 made of a resin such as ABS resin is provided. In the image reading unit 2, the frame member 23 is disposed between the document table 2 A on which the document is placed and the fourth cover member 24 that forms the left end surface of the image reading unit 2.

  The method of attaching / detaching the fourth cover member 24 to / from the frame member 23 is not particularly limited. For example, the fourth cover member 24 is fitted to the mounting portion formed on the frame member 23 from the left side. It is conceivable that 24 is attached to the frame member 23.

  As shown in FIGS. 11 and 12, the frame member 23 of the left side surface portion 22 is formed with a long insertion port portion 231 into which a later-described insertion portion 111 of the option unit 101 is inserted. . Specifically, the insertion opening 231 is provided between the document table 2A of the left side surface 22 of the image reading unit 2 and the fourth cover member 24 that forms the left end surface of the image reading unit 2. A long space is formed from 21 toward the back side.

  For example, in the frame member 23, the insertion opening 231 is surrounded by the left side surface, the right side surface, the upper surface, and the lower surface, and does not have a front surface and a back surface. Note that the left side surface, the right side surface, the upper surface, and the lower surface of the insertion port portion 231 are formed continuously or intermittently in the front-rear direction D13.

  The frame member 23 has an opening 232 through which a fixing member 233 such as a screw for fixing the option unit 101 to the frame member 23 is inserted in a state where the insertion portion 111 of the option unit 101 is inserted through the insertion port portion 231. Is formed.

  On the other hand, the option mounting portion 10 includes an opening 103 into which a later-described fitting portion 113 of the option unit 101 is fitted, and a frame member 25 exposed in the opening 103. The frame member 25 is a metal member such as a steel plate exposed in the opening 103 when the third cover member 9 is removed. The frame member 25 is formed with a screw hole 104 used for fixing the option unit 101. The frame member 25 may be configured integrally with the frame member 23 of the left side surface portion 22.

  FIG. 13 is an exploded view of the option unit 101. As shown in FIG. 13, the option unit 101 includes a frame member 110 and cover members 120, 130, 140, 150, and 160. The frame member 110 is a metal member such as stainless steel or aluminum, and the cover members 120, 130, 140, 150, and 160 are resin members such as ABS resin. It is also conceivable that a single resin cover member is attached to the frame member 110.

  The frame member 110 includes an insertion part 111, a placement part 112, and a fitting part 113. The insertion portion 111 is a long portion that protrudes rearward from the left rear end portion of the placement portion 112 and can be inserted into the insertion port portion 231 of the left side surface portion 22. The placement unit 112 is formed integrally with the insertion unit 111 and corresponds to a placement region of the electronic device 102. The fitting portion 113 is formed downward from the rear end of the placement portion 112 and is fitted and fixed to the opening 103 of the option mounting portion 10.

  The frame member 110 is provided with openings 114 to 117. The opening 114 is used to fix the cover member 130 and the cover member 160 that sandwich the frame member 110. The opening 115 is used when the option unit 101 is fixed to the option mounting unit 10. The opening 116 is used when the option unit 101 is fixed to the frame member 23 using the fixing member 233. The opening 117 is a screw hole used when the cover member 150 is fixed to the frame member 110.

  The cover member 120 is a member that forms a placement surface on which the electronic device 102 is placed, and a plurality of engagement portions 121 are provided on the inner periphery of the back surface. Each of the engaging portions 121 is used for fixing the cover member 120 to the cover member 130 or the cover member 160.

  The cover member 130 is a member that sandwiches the frame member 110 with the cover member 160, and a plurality of connecting portions 131 are provided on the back surface. The connecting portion 131 is used for fixing the cover member 130 and the cover member 160.

  The cover member 140 is a member that covers the back side of the cover member 130, and a rib 141 including a screw hole is provided on the back surface. The screw hole 141 is used for fixing the frame member 110 and the cover member 140.

  The cover member 150 is used to cover the front side of the fitting portion 113 after the option unit 101 is fixed to the option mounting portion 10. The cover member 150 is provided with an opening 151 used for fixing the frame member 110 and the cover member 150.

  The cover member 160 is a member that forms the bottom surface of the option unit 101. A rib (not shown) is provided on the upper surface of the cover member 160, and the cover member 160 is engaged with the connecting portion 131 of the cover member 130 via the opening 114 of the frame member 110. 130 is fixed.

  The option unit 101 configured as described above is attached to the image reading unit 2 as shown in FIG. Specifically, in the option unit 101, the cover member 120, 130, 140, and 160 is first attached to the frame member 110, and the insertion portion 111 of the frame member 110 is inserted into the insertion portion of the frame member 23 of the left side surface portion 22. 231 is inserted.

  Then, the insertion part 111 of the option unit 101 is inserted into the insertion port part 231 until the fitting part 113 of the frame member 110 is fitted into the opening part 103 of the option mounting part 10. At this time, the insertion portion 111 is in contact with or close to the inner peripheral surface (upper surface, lower surface, left side surface, right side surface) of the insertion port portion 231. Accordingly, the movement of the option unit 101 is restricted by the contact between the insertion portion 111 of the frame member 110 and the frame member 23 of the side end portion 22.

  Next, in the option unit 101, the fixing member 233 such as a screw is screwed into the screw hole 116 of the frame member 110 of the left side surface portion 22 through the opening portion 232 formed in the frame member 23, whereby the left side surface portion 22. Fixed to. The option unit 101 is also fixed to the front surface portion 21 by screwing a fixing member 118 such as a screw into the screw hole 104 of the frame member 25 of the option mounting portion 10 through the opening 115 of the frame member 110. Is done. Thereafter, the cover member 150 is attached to the option unit 101 from the front side, and a fixing member such as a screw is screwed into the screw hole 117 of the frame member 110 through the opening 151 of the cover member 150. The cover member 150 is fixed to the frame member 110.

  In the image forming apparatus 100 configured as described above, the option unit 101 is connected to the option mounting portion 10 and the left side surface portion 22 of the front surface portion 21 of the image reading portion 2 in a state where the insertion portion 111 is inserted through the insertion port portion 231. It is fixed to the frame member 23. Accordingly, the option unit 101 is stably attached to the image reading unit 2. Further, since the insertion unit 111 of the option unit 101 is inserted from the front side 21 toward the back side using the left side 22 of the image reading unit 2, the size of the image reading unit 2 in the front-rear direction D13 is not required. It is not expanded, and the downsizing of the image forming apparatus 100 is not hindered.

1 ADF
2 Image reading section 21 Front section 22 Side section 23 Frame member 24 Fourth cover member 3 Image forming section 4 Paper feed cassette 5 Operation display section 54 Second cover member 6 Information reading section 61 Communication cable 7 First cover member 71 Locking Portion 72 Locking portion 8 Housing portion 81 Reading mounting portion 82 Wiring housing portion 9 Third cover member 91 Locking portion 92 Insertion port portion 93 Screw hole 94 Fixing member 10 Option mounting portion 100 Image forming apparatus 101 Option unit 102 Electronic device 103 Opening 104 Screw hole

Claims (7)

An image reading unit that is disposed above a main body unit including an image forming unit that forms an image on a sheet and reads an image from a document;
An information reading unit that is accommodated in a front surface portion of the image reading portion and reads user information; a reading mounting portion that is formed on the front surface portion and on which the information reading portion is mounted;
A wiring housing portion that is formed adjacent to the reading mounting portion on the front surface portion and that accommodates a cable connected to the information reading portion;
A first cover member that is detachable from the front part and covers at least a part of the front part;
A second cover member that is detachable between the front surface portion and the operation display portion, covers the back surface portion of the operation display portion, and restricts the movement of the first cover member;
An operation display unit arranged at a position in front of the wiring housing part of the front part;
Equipped with a,
The lower end of the wiring housing part is retracted upward compared to the lower end of the reading mounting part,
The first cover member is switched between a support state supported by the front surface portion and a non-support state detachable from the front surface portion by sliding movement, and corresponds to the reading storage portion in the direction of the slide movement. And a second area corresponding to the wiring accommodating portion, which is retracted upward relative to the lower end of the first area, and forward from the front surface of the second area of the first cover member. Provided with a projecting portion that is provided in a projecting manner and is elongated in the direction of the slide movement,
The image forming apparatus includes a fitting portion that fits the protruding portion of the first cover member and restricts the sliding movement of the protruding portion .   The image forming apparatus according to claim 1, wherein longitudinal directions of the reading mounting unit and the wiring housing unit are parallel to a parallel arrangement direction of the reading mounting unit and the wiring housing unit.   3. The image forming apparatus according to claim 1, further comprising: a connecting portion that is provided adjacent to the wiring housing portion on the side opposite to the reading mounting portion and connected to the cable.   The image forming apparatus according to claim 3, wherein an insertion port of the cable in the connection portion is directed toward the wiring housing portion.   The image forming apparatus according to claim 1, further comprising a removable cover member that covers the front portion. An operation display unit disposed at a position in front of the front unit;
A second cover member that is detachable between the front surface portion and the operation display portion, covers a back surface portion of the operation display portion, and restricts movement of the cover member;
The image forming apparatus according to claim 5, further comprising: A third cover member that is provided adjacent to the longitudinal direction of the cover member in the front surface portion and is fixed to the front surface portion using a fixing member;
The cover member conceals the fixing member when the third cover member is attached to the front portion after being fixed to the front portion.
The image forming apparatus according to claim 5.