JP2021182712A - Image reading device - Google Patents

Abstract

To provide an image reading device that prevents a flexible flat cable from interfering with an image reading part without attaching additional components.SOLUTION: An image reading device 2 has: an image reading part 11 that can read an image in a main scanning direction, of a manuscript, and that is provided so as to extend in the main scanning direction; a drive part 15 that moves the image reading part 11 in a sub-scanning direction orthogonal to the main scanning direction; a wall part 30 provided so as to extend in the sub-scanning direction at a neighborhood position of the image reading part 11; and a flexible flat cable 40 whose one end is fixed to the image reading part 11 and whose the other end is fixed to a predetermined position of the wall part 30, and that is wired along a wall surface of the wall part 30. The wall part 30 has a swollen part 32 where the wall surface is swollen toward the outside of a scanning region where the image reading part 11 moves, at least partially in a wiring direction of the flexible flat cable 40.SELECTED DRAWING: Figure 3

Description

The present invention relates to an image reader that reads an image of a document and generates image data.

Conventionally, some image processing devices such as MFPs (Multifunction Peripherals) are equipped with an image reading device that optically reads an image of a document and generates image data. This type of image reading device includes an image reading unit that reads an image in the main scanning direction of the document, and reads the image of the entire document by moving the image reading unit in the sub-scanning direction orthogonal to the main scanning direction. .. A flexible flat cable is connected to such an image reading unit in order to transmit a control signal or an image signal. This flexible flat cable is wired, for example, along a wall portion arranged in parallel with the sub-scanning direction at a position near the image reading portion.

However, when the distance between the image reading unit and the wall portion is short, if the flexible flat cable is in a state of floating from the wall surface, the flexible flat cable contacts and interferes with the flexible flat cable when the image reading unit moves in the sub-scanning direction. In this case, the image reading unit cannot normally move in the sub-scanning direction. It also causes defects such as disconnection in the flexible flat cable.

Conventionally, in order to prevent the above-mentioned problems from occurring, by using a torsion coil spring, the flexible flat cable is pressed against the wall surface of the wall when the image reading unit moves in the sub-scanning direction, and the flexible flat cable is pressed against the wall surface. A technique has been proposed to prevent the cable from floating from the surface (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2002-247291

However, in the prior art of Patent Document 1, it is necessary to newly attach a torsion coil spring, and work for that purpose is required. Therefore, the above-mentioned conventional technique has a problem that the apparatus becomes expensive due to an increase in the number of parts and a decrease in work efficiency.

Therefore, the present invention has been made to solve the above problems, and provides an image reading device capable of preventing a flexible flat cable from interfering with an image reading unit without attaching new parts. The purpose is to do.

In order to achieve the above object, the invention according to claim 1 is an image reading device, which can read an image in the main scanning direction of a document, and has an image reading unit extended along the main scanning direction. A driving unit that moves the image reading unit in a sub-scanning direction orthogonal to the main scanning direction, a wall portion extending along the sub-scanning direction at a position near the image reading unit, and one end of the image. A flexible flat cable that is fixed to the reading unit and the other end of which is fixed to a predetermined position of the wall portion and is wired along the wall surface of the wall portion is provided, and the wall portion is the flexible flat cable. The configuration is characterized by having a bulging portion whose wall surface is bulged toward the outside of the scanning region in which the image reading portion moves in at least a part of the wiring direction of the above.

The invention according to claim 2 is the image reading device according to claim 1, wherein the driving unit moves the image reading unit between a first position and a second position in the sub-scanning direction, and the flexible unit. One end of the flat cable is fixed to the surface of the image reading unit parallel to the main scanning direction, which is closer to the second position, and the other end is the first position and the second position. The configuration is characterized in that it is fixed to the fixed portion of the wall portion provided between the and, and is wired along the wall surface from the fixed portion toward the second position in the sub-scanning direction. ..

The invention according to claim 3 is characterized in that, in the image reading device of claim 2, the wall portion has the bulging portion between the fixed portion and the second position in the sub-scanning direction. It is a configuration to do.

The invention according to claim 4 is the image reading device according to claim 2, wherein the wall portion attaches the flexible flat cable to the wall surface of the bulging portion when the image reading portion is in the second position. The configuration is characterized in that the flexible flat cable is arranged so as to form a bent portion between the bulging portion and the image reading portion so that the flexible flat cable is bent with a predetermined curvature.

According to a fifth aspect of the present invention, in the image reading device of the fourth aspect, the flexible flat cable is rearward of the image reading unit when the image reading unit moves from the second position to the first position. The configuration is characterized in that the flexible portion is enlarged on the side.

The invention according to claim 6 further includes the image reading unit, the driving unit, and the frame body for accommodating the flexible flat cable in the image reading device according to any one of claims 1 to 5. , The configuration is characterized in that it is integrally formed with the frame body.

The invention according to claim 7 is characterized in that, in the image reading device of claim 6, the wall portion is formed as an exterior wall of the frame body.

The invention according to claim 8 further includes, in the image reading device according to any one of claims 1 to 5, a frame body for accommodating the image reading unit, the driving unit, and the flexible flat cable, and the wall portion is provided. The configuration is characterized in that the position of the bulging portion with respect to the frame body can be adjusted.

According to the present invention, it is possible to satisfactorily prevent the flexible flat cable from interfering with the image reading unit without attaching a new component.

It is a figure which shows one configuration example of the image processing apparatus equipped with an image reading apparatus. It is a perspective view which shows one configuration example of an image reading apparatus. It is a top view which shows one configuration example of an image reader. It is a figure which shows the scanning area which the image reading part moves. It is a figure which shows the posture change of the flexible flat cable when the image reading part moves from a 1st position to a 2nd position. It is a figure which shows the posture change of the flexible flat cable when the image reading part moves from the 2nd position to the 1st position. It is a figure which illustrates the case where the flexible flat cable floats from the wall surface. It is a figure which illustrates another form of a wall part. It is a figure exemplifying still another form of a wall part. It is a figure exemplifying still another form of a wall part. It is a figure which illustrates the case where the wall portion is provided as the exterior wall of a frame body.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In the embodiments described below, the elements common to each other are designated by the same reference numerals, and duplicate description thereof will be omitted.

FIG. 1 is a diagram showing a configuration example of an image processing device 1 equipped with an image reading device 2 according to an embodiment of the present invention. The XYZ three-dimensional coordinate system shown in FIG. 1 is a coordinate system in which the XY plane is a horizontal plane and the Z direction is a vertical direction, and is a coordinate system common to the coordinate systems shown in other figures.

The image processing device 1 is a device configured as an MFP having a scanning function, a copying function, and a printing function. An image reading device 2 that functions as a scanner is mounted on the upper part of the image processing device 1. The image reading device 2 optically reads the image of the original and generates image data. A platen glass (transparent plate) 3 for placing a document to be image-read is arranged on the upper surface of the image reading device 2. Further, an opening / closing lid 4 for opening / closing the upper surface of the image reading device 2 is provided above the image reading device 2. The opening / closing lid 4 is supported on the upper surface of the image reading device 2 so as to be openable / closable by, for example, hinge portions 4a and 4a attached to the back side (X direction side) of the platen glass 3. An automatic document transfer device (ADF) may be provided on the upper part of the image reading device 2 instead of the opening / closing lid 4.

A printing unit 5 and a paper feeding unit 6 that function as printers are provided in the central portion of the image processing apparatus 1. The paper feeding unit 6 accommodates sheets such as printing paper, and feeds the sheets one by one to the printing unit 5. The printing unit 5 prints an image on the sheet fed from the paper feeding unit 6 and discharges the image onto the paper ejection tray 5a provided in the upper part of the printing unit 5.

Further, on the front side of the image processing device 1, an operation panel 7 serving as a user interface is provided. The image processing device 1 receives a job setting operation and a job execution instruction by the user via the operation panel 7. For example, when the user is instructed to execute a scan job, the image processing device 1 operates the image reading device 2 to read the image of the document placed on the platen glass 3 and generate image data.

FIG. 2 is a perspective view showing a configuration example of the image reading device 2. In FIG. 2, the opening / closing lid 4 arranged on the upper part of the image reading device 2 is omitted. In the image reading device 2, the platen glass 3 is arranged in the center of the upper surface of the box-shaped frame 20 whose inside is sealed. For example, the frame body 20 includes an upper frame body 21 and a lower frame body 22, and is formed in a box shape by assembling the upper frame body 21 and the lower frame body 22. A rectangular opening is formed in the center of the upper surface of the frame 20, and the platen glass 3 is fitted in the opening. That is, the platen glass 3 is supported by the frame body 20. Further, on the upper surface of the frame body 20, in the back direction (X direction) of the platen glass 3, mounting holes 23, 23 for mounting the opening / closing lid 4 and the hinge portions 4a, 4a for supporting the automatic document transporting device are provided. ..

The image reading device 2 has an image reading mechanism 10 inside the frame 20 and in the space below the platen glass 3. The image reading mechanism 10 includes an image reading unit 11 arranged along the main scanning direction (X direction) and a driving unit 15 for moving the image reading unit 11 in the sub-scanning direction (Y direction) orthogonal to the main scanning direction. It is equipped with. The image reading unit 11 is a reading head that reads an image of a document, and is an elongated rectangular unit extending along the main scanning direction (X direction). The image reading unit 11 is configured as, for example, a contact image sensor (CIS), is urged upward by a urging means such as a spring (not shown), and is provided in a state of being in contact with the lower surface of the platen glass 3. The image reading unit 11 has a pair of contact portions 11a and 11a projecting along the main scanning direction (X direction) so as to abut against the lower surface of the platen glass 3 at both ends in the sub-scanning direction (Y direction). Be prepared for. The image reading unit 11 includes a light emitting unit 12 that illuminates the surface to be read of the document and a reading unit 13 that receives the reflected light from the document and reads the image in the recess between the contact portions 11a and 11a. ing. The light emitting unit 12 includes a plurality of light sources arranged along the main scanning direction. For example, the light source is formed of a light emitting diode or the like. The reading unit 13 includes, for example, a reading sensor in which a large number of light receiving elements defining one pixel are arranged along the main scanning direction. The reading sensor also includes a lens array or the like that forms an image of the reflected light from the document on a large number of light receiving elements.

The lower surface of the image reading unit 11 as described above is supported by the support member 14. The support member 14 is mounted on a guide rail 16 installed in the vicinity of the bottom surface of the lower frame body 22 along the sub-scanning direction, and is slidable along the guide rail 16. That is, an engaging groove is formed on the lower surface of the support member 14 along the sub-scanning direction, and the support member 14 can move in the sub-scanning direction by engaging the guide rail 16 with the engaging groove. Will be. The urging means such as the spring described above is arranged between the image reading unit 11 and the support member 14, and the support member 14 presses the image reading unit 11 against the lower surface of the platen glass 3 by the urging force of the urging means. The lower surface of the image reading unit 11 is supported in this state. The support member 14 moves in the sub-scanning direction together with the image reading unit 11 while supporting the image reading unit 11.

The drive unit 15 extends between the guide rail 16, the motor 17 as the drive source, the drive pulley 18 rotationally driven by the motor 17, the driven pulley (not shown), and the drive pulley 18 and the driven pulley. The endless wire 19 is provided. The motor 17 and the drive pulley 18 are arranged on one end side in the sub-scanning direction, and the driven pulley (not shown) is arranged on the other end side in the sub-scanning direction. The wire 19 spanned by these two pulleys is installed in a state parallel to the guide rail 16. Further, the wire 19 is connected to the lower surface side of the image reading unit 11 at one point thereof. Therefore, when the motor 17 rotates the drive pulley 18 to circulate and move the wire 19, the image reading unit 11 moves along the sub-scanning direction. By switching the rotation direction of the motor 17, the moving direction of the image reading unit 11 changes, and the image reading unit 11 reciprocates along the sub-scanning direction.

A flexible flat cable 40 is connected to the image reading unit 11 that moves in the sub-scanning direction as described above. The flexible flat cable 40 is a sheet-shaped wiring cable having an extremely thin cable thickness with respect to the cable width and having flexibility. For example, in addition to a general flexible flat cable, a flexible substrate and the like are also included. The flexible flat cable 40 supplies power to the image reading unit 11 from the main body side of the image reading device 2, and transmits a control signal or an image signal between the main body of the image reading device 2 and the image reading unit 11. Used to do things like that. The flexible flat cable 40 is arranged so that the width direction of the cable is parallel to the vertical direction (Z direction), one end thereof is fixed to the image reading unit 11, and the other end is erected from the bottom surface of the lower frame body 22. It is fixed to the fixing portion 38 provided on the wall portion 30. As the image reading unit 11 moves in the sub-scanning direction, the flexible flat cable 40 sequentially changes its posture due to its flexible nature.

FIG. 3 is a plan view showing a configuration example of the image reading device 2. Note that FIG. 3 illustrates a state in which the upper frame body 21 is removed from the frame body 20. As shown in FIG. 3, the image reading device 2 has a substantially rectangular planar shape, and has four wall portions 25, 26, 27, 28 serving as exterior walls on the outer peripheral portion thereof. Inside the four wall portions 25, 26, 27, 28, a wall portion 30 to which the other end of the flexible flat cable 40 is connected is provided at a position near the image reading unit 11. The wall portion 30 is integrally formed with the frame body 20 (more specifically, the lower frame body 22), and stands vertically from the bottom surface of the lower frame body 22. The wall portion 30 extends along the sub-scanning direction, and both ends thereof are connected to the wall portions 25 and 27. Further, the wall portion 30 is provided with a fixing portion 38 at a predetermined position thereof, and fixes the end portion of the flexible flat cable 40. Here, the end of the flexible flat cable 40 fixed by the fixing portion 38 means the end of the portion where the flexible flat cable 40 can freely change its posture. Therefore, the flexible flat cable 40 may be further extended from the portion fixed by the fixing portion 38 toward the control board (not shown) or the like.

The drive unit 15 reciprocates the image reading unit 11 between the first position P1 and the second position P2 in the sub-scanning direction. For example, in the image reading device 2 of the present embodiment, the first position P1 is the home position of the image reading unit 11, and the second position P2 is the end position of the image reading unit 11. The image reading unit 11 reads the image of the original while moving from the first position P1 in the direction of the arrow F1. For example, when the image reading unit 11 moves to the second position P2 and ends the image reading operation, the driving unit 15 reversely drives the motor 17 and moves the image reading unit 11 in the direction of the arrow F2 to the home position. It returns to the first position P1 which is.

FIG. 4 is a diagram showing a scanning region R1 in which the image reading unit 11 moves. As described above, the image reading unit 11 moves between the first position P1 and the second position P2. Therefore, in the image reading device 2, the scanning region R1 to which the image reading unit 11 moves is a region shaded in FIG. 4. The wall portion 30 for fixing the other end of the flexible flat cable 40 extends in the sub-scanning direction at a position at least a predetermined distance from the scanning region R1.

Returning to FIG. 3, the fixing portion 38 fixes the flexible flat cable 40 to the wall portion 30 so that the flat surface of the flexible flat cable 40 follows the surface (wall surface) of the wall portion 30. The fixing portion 38 of the present embodiment is provided at a predetermined position of the wall portion 30 between the first position P1 and the second position P2 in the sub-scanning direction, and the flexible flat cable 40 is attached to the wall surface of the wall portion 30. It is wired in the direction toward the second position P2 along the line.

On the other hand, the image reading unit 11 is provided with a fixed portion 39 on the surface S2 close to the second position P2 of the two surfaces S1 and S2 parallel to the main scanning direction, and one end of the flexible flat cable 40 is provided. It is fixed to the fixing portion 39. The fixing portion 39 fixes the flexible flat cable 40 so that the flat surface of the flexible flat cable 40 follows the surface (wall surface) of the surface S2 of the image reading unit 11. The fixing portion 39 of the present embodiment is provided at a predetermined position between the guide rail 16 and the wire 19 and the wall portion 30, and the flexible flat cable 40 is attached to the wall portion 30 along the surface S2 of the image reading unit 11. Wired in the direction to go.

The flexible flat cable 40 has a substantially S-shaped wiring mode as shown in FIG. 3 when the image reading unit 11 is at the first position P1 due to the wiring configuration as described above, and the fixed portion 38 in the sub-scanning direction. A first flexible portion C1 that curves in the region between the second position P2 and the second flexible portion C2 that bends in the region near the fixed portion 39 is formed. These two flexible portions C1 and C2 are generated by the strength of the flexible flat cable 40, and the flexible flat cable 40 has a substantially S-shaped posture.

The wall portion 30 of the present embodiment is a wall surface facing the outside of the scanning region R1 (see FIG. 4) in which the image reading portion 11 moves in at least a part of the wiring direction in which the flexible flat cable 40 is wired from the fixed portion 38. It has a bulging portion 32 that inflates. That is, the wall portion 30 has a first wall portion 31 provided at a predetermined interval from the image reading portion 11 in the main scanning direction when the image reading portion 11 is at the first position P1, and an end portion of the first wall portion 31. The second wall portion 33, which is connected to the image reading unit 11 and is slanted in a direction away from the scanning region R1, and is connected to the end portion of the second wall portion 33. A bulging portion 32 having a third wall portion 34 extending in the sub-scanning direction at a distant position, and the wall surfaces of the second wall portion 33 and the third wall portion 34 are inflated to the outside of the scanning region R1. To form. The fixing portion 38 is provided at a position near the end portion of the first wall portion 31.

For example, when the image reading unit 11 is at the first position P1, the flexible flat cable 40 has a substantially S-shaped shape as described above. At this time, the bending portion C1 tries to increase the radius of curvature of the bending portion C1 by the stiffness of the flexible flat cable 40. Therefore, the flexible flat cable 40 is in a state where its flat surface is joined to the wall surfaces of the first wall portion 31 and the second wall portion 33.

FIG. 5 is a diagram showing a posture change of the flexible flat cable 40 when the image reading unit 11 moves from the first position P1 to the second position P2. When the image reading unit 11 moves from the first position P1 to the second position P2, first, as shown in FIG. 5A, the flexible flat cable 40 is of the cable due to the stiffness of the bending portion C1. The flat surface is joined to the wall surface of the bulging portion 32 and moved in the sub-scanning direction. Along with this, the S-shape of the flexible flat cable 40 gradually becomes smaller. Then, when the image reading unit 11 approaches the second position P2, as shown in FIG. 5B, the flexible flat cable 40 does not have an S-shape, and the first bending in the traveling direction side of the image reading unit 11 Only the portion C1 remains. Also at this time, the flexible flat cable 40 moves in the sub-scanning direction while joining the flat surface of the cable to the wall surface of the bulging portion 32 by the stiffness of the bending portion C1. After that, when the image reading unit 11 reaches the second position P2, as shown in FIG. 5C, the flexible flat cable 40 is in a state where most of the flat surface is in contact with the wall surface of the wall unit 30. Therefore, a small arc-shaped flexible portion C1 is formed between the wall surface of the bulging portion 32 (third wall portion 34) and the image reading portion 11. That is, the flexible flat cable 40 has a posture curved in a direction away from the image reading unit 11 in the space between the image reading unit 11 and the bulging unit 32. Therefore, the flexible flat cable 40 does not interfere with the image reading unit 11 when the image reading unit 11 moves from the first position P1 to the second position P2. The radius of curvature of the flexible portion C1 when the image reading unit 11 moves to the second position P2 depends on the distance between the image reading unit 11 and the third wall portion 34, and the larger the distance, the larger the radius of curvature. growing.

Next, FIG. 6 is a diagram showing a posture change of the flexible flat cable 40 when the image reading unit 11 moves from the second position P2 to the first position P1. As shown in FIG. 6A, when the image reading unit 11 tries to move from the second position P2 to the first position P1, the flexible flat cable 40 has the image reading unit 11 and the third wall unit. A flexible portion C1 is already formed between the cable and the 34. When the image reading unit 11 starts to move toward the first position P1 in that state, the flexible flat cable 40 changes its posture so as to increase the radius of curvature of the already formed bending portion C1. Therefore, as shown in FIG. 6B, the flexible flat cable 40 changes so as to inflate the flexible portion C1 toward the rear side of the image reading portion 11. When the image reading unit 11 further moves from the second position P2 toward the first position P1, the flexible portion C1 becomes larger, and as shown in FIG. 6 (c), the second position near the fixed portion 39. The bent portion C2 is completed, and the flexible flat cable 40 has an S-shaped shape again. At this time, since the bending portions C1 and C2 generated in the flexible flat cable 40 are both generated on the rear side of the image reading unit 11, they do not interfere with the image reading unit 11.

Further, in the image reading device 2, since the wall surface of the wall portion 30 joined to the flat surface of the flexible flat cable 40 bulges toward the outside of the scanning region R1, a portion floating from the wall surface is temporarily formed on the flexible flat cable 40. Even if it occurs, it is possible to prevent the floating portion from interfering with the image reading unit 11. FIG. 7 is a diagram illustrating a case where the flexible flat cable 40 is in a state of floating from the wall surface. As shown in FIG. 7, when the image reading unit 11 moves from the first position P1 to the second position P2, it is assumed that the flexible flat cable 40 has a portion 41 floating from the wall surface of the bulging portion 32. However, the floating portion 41 can be accommodated in the space of the bulging portion 32. That is, the floating portion 41 can be kept in a state where it does not enter the scanning region R1 of the image reading unit 11. Therefore, even if the image reading unit 11 moves from the second position P2 toward the first position P1, it is possible to prevent the floating portion 41 from interfering with the image reading unit 11. ..

As described above, the image reading device 2 of the present embodiment has a wall portion 30 for fixing the end portion of the flexible flat cable 40 at a position near the image reading unit 11, and the wall portion 30 is the image reading unit 11. It has a bulging portion 32 whose wall surface is inflated toward the outside of the scanning region R1 to which the moving portion R1 moves. Therefore, when the image reading unit 11 moves in one direction in the sub-scanning direction, the flexible flat cable 40 can be wired along the wall surface of the bulging portion 32, and the flexible flat cable 40 can be wired in the opposite direction. When moving, the flexible flat cable 40 wired along the wall surface of the bulging portion 32 can be collected in the flexible portion C1 on the rear side of the image reading portion 11. Therefore, when the image reading unit 11 reciprocates in the sub-scanning direction, the flexible flat cable 40 does not interfere with the image reading unit 11. Therefore, the image reading device 2 of the present embodiment does not cause problems such as buckling and disconnection of the flexible flat cable 40.

Further, the image reading device 2 of the present embodiment uses the strength of the flexible flat cable 40 itself to press a flat surface against the wall surface of the bulging portion 32, or to the rear side of the image reading portion 11. Since it is possible to form the flexible portion C1, it is not necessary to attach a separate component such as a conventional torsion coil spring. Therefore, the image reading device 2 of the present embodiment can satisfactorily prevent the flexible flat cable 40 from interfering with the image reading unit 11 without causing an increase in the number of parts or a decrease in work efficiency. There is an advantage.

Next, FIG. 8 is a diagram illustrating another form of the wall portion 30. In the wall portion 30 shown in FIG. 8, the second wall portion 33 oblique in the direction away from the scanning region R1 of the image reading unit 11 is formed longer than the second wall portion 33 shown in FIG. 3 in the sub-scanning direction. There is. Therefore, when the image reading unit 11 is in the second position P2, the flexible flat cable 40 has a larger radius of curvature of the bending portion C1 formed in the space between the wall surface of the bulging portion 32 and the image reading portion 11. Can be. Therefore, when the image reading unit 11 moves from the second position P2 to the first position P1, it is possible to expand the bending portion C1 more stably on the rear side of the image reading unit 11. Therefore, the wall portion 30 may adopt the form shown in FIG. 8 instead of the one shown in FIG.

FIG. 9 is a diagram illustrating still another form of the wall portion 30. The wall portion 30 shown in FIG. 9 has an arc-shaped wall portion 35 extending from the fixed portion 38 to the second position P2. Therefore, when the image reading unit 11 moves to the second position P2, the flexible flat cable 40 is in a bent state in contact with the wall surface of the arc-shaped wall portion 35, and the bent direction is maintained. It is connected to the flexible portion C1. Therefore, when the image reading unit 11 moves from the second position P2 to the first position P1, it is possible to more stably expand the bending portion C1 on the rear side of the image reading unit 11. Therefore, the wall portion 30 may adopt the form shown in FIG.

FIG. 10 is a diagram illustrating still another form of the wall portion 30. In the wall portion 30 shown in FIG. 10, the position of the wall portion 36 forming the bulging portion 32 can be adjusted in the main scanning direction. That is, the wall portion 36 is provided with fixed portions 36a, 36a projecting to the opposite side of the scanning region R1, and the fixed portions 36a, 36a are formed with elongated holes 36b, 36b long in the main scanning direction. There is. Screws 37, 37 and the like are fastened to the screw holes provided on the bottom surface of the lower frame body 22 through the elongated holes 36b and 36b. Therefore, the wall portion 36 can adjust the position of the bulging portion 32 with respect to the frame body 20. Specifically, the wall portion 36 is located between a position close to the scanning region R1 as shown in FIG. 10A and a position away from the scanning region R1 as shown in FIG. 10B. It is possible to adjust its position. Therefore, for example, the position of the wall portion 36 in the main scanning direction can be adjusted according to the length of the flexible flat cable 40. It should be noted that such position adjustment of the wall portion 36 can be performed at the time of shipment of the image reading device 2 and can also be performed by a serviceman at the time of maintenance after the image reading device 2 is installed in the user environment. Is.

The embodiments relating to the present invention have been described above. However, the present invention is not limited to the content described in the above embodiment, and various modifications can be applied.

For example, in the above embodiment, the case where the wall portion 30 in contact with the flat surface of the flexible flat cable 40 is a wall portion provided inside the frame body 20 has been exemplified. However, it is not limited to this. FIG. 11 is a diagram illustrating a case where the above-mentioned wall portion 30 is provided as an exterior wall of the frame body 20 (more specifically, the lower frame body 22). As shown in FIG. 11, the wall portion 30 described above may be provided as an exterior wall of the image reading device 2. In this case, the exterior wall of the image reading device 2 has a shape in which the portion corresponding to the bulging portion 32 bulges outward.

Further, in the above embodiment, the case where the image reading device 2 is a device mounted on the image processing device 1 is exemplified. However, it is not limited to this. For example, the image reading device 2 may be configured as a scanner having only a scanning function by itself.

1 Image processing device 2 Image reading device 11 Image reading unit 15 Driving unit 20 Frame body 22 Lower frame body 30 Wall part 32 Protruding part 38 Fixed part 40 Flexible flat cable C1 Flexible flat cable C1 Flexible part R1 Scanning area P1 First position P2 Second Position of

Claims (8)

An image reading unit capable of reading an image in the main scanning direction of a document and extending along the main scanning direction, and an image reading unit,
A driving unit that moves the image reading unit in a sub-scanning direction orthogonal to the main scanning direction, and a driving unit.
A wall portion extending along the sub-scanning direction at a position near the image reading portion, and a wall portion.
A flexible flat cable having one end fixed to the image reading unit and the other end fixed to a predetermined position on the wall portion and wired along the wall surface of the wall portion.
Equipped with
The image reading device is characterized in that the wall portion has a bulging portion in which the wall surface is inflated toward the outside of a scanning region in which the image reading portion moves, at least in a part of the wiring direction of the flexible flat cable. The driving unit moves the image reading unit between the first position and the second position in the sub-scanning direction.
One end of the flexible flat cable is fixed to the surface of the image reading unit parallel to the main scanning direction, which is closer to the second position, and the other end is the first position and the second surface. The claim is characterized in that it is fixed to a fixed portion of the wall portion provided between the position and the fixed portion, and is wired along the wall surface from the fixed portion toward the second position in the sub-scanning direction. Item 1. The image reading device according to Item 1. The image reading device according to claim 2, wherein the wall portion has the bulging portion between the fixed portion and the second position in the sub-scanning direction. In the wall portion, when the image reading portion is in the second position, the flexible flat cable is arranged along the wall surface of the bulging portion, and between the bulging portion and the image reading portion. The image reading device according to claim 2 or 3, wherein the flexible flat cable forms a bent portion in which the flexible flat cable is bent with a predetermined curvature. The flexible flat cable is characterized in that when the image reading unit moves from the second position to the first position, the flexible portion is enlarged on the rear side of the image reading unit. The image reading device according to 4. A frame body for accommodating the image reading unit, the driving unit, and the flexible flat cable.
Further prepare
The image reading device according to any one of claims 1 to 5, wherein the wall portion is integrally formed with the frame body. The image reading device according to claim 6, wherein the wall portion is formed as an exterior wall of the frame body. A frame body for accommodating the image reading unit, the driving unit, and the flexible flat cable.
Further prepare
The image reading device according to any one of claims 1 to 5, wherein the wall portion can adjust the position of the bulging portion with respect to the frame body.

Images