JP2012257014A - Image reading device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image reading device that can reduce an impact occurring when the rear edge of a manuscript comes into contact with a platen glass and suppress occurrence of disturbance of a read-out image when image information of the manuscript is read out.SOLUTION: An image reading device for reading image information of a manuscript fed by a manuscript feeding unit at a manuscript reading position 100 has a platen glass 161 disposed at the manuscript reading position 100, a reader unit for reading the image information of the manuscript moved onto the platen glass 161, and a manuscript guide unit 12 for guiding the manuscript along the platen glass 161 so that the image information is read out by the reader unit. The manuscript guide unit 12 has plural guide pawls 107 for guiding the manuscript fed by the manuscript feeding unit onto the platen glass 161. The plural guide pawls 107 are arranged side by side in a width direction orthogonal to a manuscript feeding direction, and the length thereof in the manuscript feeding direction is shorter as the position is shifted from the center to both the sides in the width direction.

Description

  The present invention relates to an image reading apparatus that reads an image of a document.

  2. Description of the Related Art Conventionally, in an image forming apparatus such as a digital copying machine, when an original conveyed by an automatic original conveying apparatus passes through the upper surface of the platen glass, the image information of the original is received by an optical system disposed below the platen glass. An image reading device for reading is used. The image reading device irradiates a document passing through the upper surface of the platen glass with light, detects the reflected light, and reads the image information of the document.

  By the way, the document conveyed by the automatic document conveyance device is guided onto the platen glass by a conveyance guide or the like. For example, if a shock when the conveyed document contacts the platen glass from the conveyance guide is large, the read image May be disturbed.

  In response to this, there is a technique for guiding a document so that the document is elastically sandwiched from above and below in the document conveyance path to the top surface of the platen glass so that the document draws a smooth constant path toward the top surface of the platen glass. It has been proposed (see Patent Document 1).

JP-A-10-139211

  Here, since the technique described in Patent Document 1 can smoothly convey a document while the document is being held, disturbance of a read image is suppressed. However, for example, when the trailing edge of the document comes into contact with the upper surface of the platen glass, there is a level difference from the platen glass by the thickness of the outer guide, so when the trailing edge of the document lands on the platen glass. There is a risk of disturbing the read image.

  Accordingly, the present invention provides an image reading apparatus capable of reducing the impact that may occur when the trailing edge of a document comes into contact with the platen glass and suppressing the occurrence of disturbance in the read image when reading image information of the document. For the purpose.

  The present invention provides an image reading apparatus that reads image information of a document fed by a document feeding unit that feeds a sheet-like document at a predetermined document reading position, and is disposed at the predetermined document reading position. A guide member, an image reading unit that is disposed below the transparent guide member, reads image information of a document that moves on the transparent guide member, and is disposed above the transparent guide member, and the image reading unit A document guide unit that guides the document fed by the document feeding unit along the transparent guide member so that the image information is read by the document feeding unit, and the document guide unit is fed by the document feeding unit. A plurality of guide portions for guiding a document to be fed onto the transparent guide member, the plurality of guide portions being arranged side by side in the width direction orthogonal to the document conveyance direction, and both sides from the center in the width direction; To go to There, the length of the document conveying direction is shortened, characterized in that.

  The present invention also provides an image reading apparatus that reads image information of a document fed by a document feeding unit that feeds a sheet-like document at a predetermined document reading position, and is provided at the predetermined document reading position. A transparent guide member, an image reading unit disposed below the transparent guide member, for reading image information of a document moving on the transparent guide member, and disposed above the transparent guide member. A document guide unit that guides the document fed by the document feeding unit along the transparent guide member so that image information is read by the reading unit, and the document guide unit includes the document feeding unit. A plurality of guide portions for guiding the document fed by the transparent guide member, the plurality of guide portions being arranged side by side in the width direction orthogonal to the document transport direction, To both sides Unishitagai hardness is lowered, characterized in that.

  The present invention also provides an image reading apparatus that reads image information of a document fed by a document feeding unit that feeds a sheet-like document at a predetermined document reading position, and is provided at the predetermined document reading position. A transparent guide member, an image reading unit disposed below the transparent guide member, for reading image information of a document moving on the transparent guide member, and disposed above the transparent guide member. A document guide unit that guides the document fed by the document feeding unit along the transparent guide member so that image information is read by the reading unit, and the document guide unit includes the document feeding unit. A plurality of guide portions for guiding the document fed by the transparent guide member, the plurality of guide portions being arranged side by side in the width direction orthogonal to the document transport direction, To both sides Thickness is thinner follow the earthenware pots, characterized in that.

  According to the present invention, by gradually grounding the sheet on the platen glass, it is possible to reduce the impact that can be generated on the original when the trailing edge of the original comes into contact with the platen glass. The occurrence of image disturbance can be suppressed.

1 is a cross-sectional view schematically showing the overall structure of an image reading apparatus according to an embodiment of the present invention. FIG. 2 is a partial enlarged cross-sectional view illustrating a configuration at a document reading position of the image reading apparatus illustrated in FIG. 1. It is a perspective view which shows the conveyance outer guide which concerns on 1st Embodiment of this invention. It is a perspective view which shows the conveyance outer guide which concerns on 2nd Embodiment of this invention. It is a perspective view which shows the conveyance outer guide which concerns on 3rd Embodiment of this invention.

<First Embodiment>
An image reading apparatus 1 according to a first embodiment of the present invention will be described with reference to FIGS. First, the overall configuration of the image reading apparatus 1 according to the first embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a cross-sectional view schematically showing the overall structure of an image reading apparatus 1 according to an embodiment of the present invention. FIG. 2 is a partial enlarged cross-sectional view showing the configuration of the image reading apparatus 1 shown in FIG. 1 at the original reading position.

  As shown in FIG. 1, the image reading apparatus 1 includes a document feeding unit 2 that feeds a sheet-like document D, and a platen glass 161 as a transparent guide member disposed on the downstream side of the document feeding unit 2. And a reader unit 150 as an image reading unit disposed below the platen glass 161. Further, the image reading apparatus 1 includes an original table glass 3 on which the original D is fixedly placed.

  The document feeder 2 includes a document tray 4 on which documents D are stacked, a feed roller 5 that feeds documents D stacked on the document tray 4, a separation transport roller 8 and a separation pad that separate documents one by one. 6 and a registration roller pair 11 that conveys the document D with its leading edge aligned. The document feeding unit 2 includes a document guide unit 12 that is provided downstream of the registration roller pair 11 and guides it to a predetermined document reading position 100, and a discharge roller that discharges the document D after image reading is completed. The pair 18 and the discharge unit 10 provided on the downstream side of the discharge roller pair 18 are provided.

  The document tray 4 includes a pair of width direction restricting plates 19 slidably provided in the width direction of the document D, and the pair of width direction restricting plates 19 are arranged in the width direction of the document D loaded on the document tray 4. By regulating, the conveyance stability at the time of feeding the document D is ensured.

  The feeding roller 5 is provided above the document tray 4 and has a solid line position shown in FIG. 1 as a home position so as not to hinder the setting operation of the document D by the operator. When the feeding operation of the document D is started, the feeding roller 5 moves from the home position to the feeding position (a broken line position shown in FIG. 1), and feeds the document D in contact with the upper surface of the document D. . The feed roller 5 is pivotally supported by an arm (not shown) and is configured to move from the home position to the feed position by driving the arm.

  The separation conveying roller 8 is provided on the downstream side of the feeding roller 5, and rotates while pressing the separation pad 6 disposed opposite to the feeding roller 5 in conjunction with the rotational driving of the feeding roller 5. The documents D fed by the above are separated and conveyed one by one. The separation pad 6 is made of a rubber material or the like having a slightly smaller friction coefficient than the separation transport roller 8.

  The registration roller pair 11 is provided downstream of the separation / conveyance roller 8, and the leading edge of the document D that is separated and conveyed one by one by the separation / conveyance roller 8 abuts on the nip portion, and a loop occurs in the document D By doing so, the leading edges of the document D are aligned. Thereafter, the registration roller pair 11 rotates to convey the document D toward the document guide unit 12.

  The document guide unit 12 is disposed on the platen glass 161. As shown in FIG. 2, the document guide unit 12 includes a read roller pair 101, a conveyance outer guide 106, a first platen roller 104, a second platen roller 105, a reading guide 103 having a white plate 103a, a jump. A table 162 and a lead discharge roller pair 102 are provided.

  The read roller pair 101 is for conveying the document D conveyed by the registration roller pair 11 along the outer conveyance guide 106, and the outer conveyance guide 106 is configured to transfer the document D conveyed by the lead roller pair 101 to the platen. Guide on glass 161. The outer guide 106 will be described in detail later.

  The first platen roller 104 is provided downstream of the outer conveyance guide 106 and guides the document D conveyed along the outer conveyance guide 106 to the document reading position 100 on the platen glass 161. The reading guide 103 is provided downstream of the first platen roller 104, and the original D guided to the original reading position 100 by the first platen roller 104 is in close contact with the platen glass 161 along the platen glass 161. I will guide you. The second platen roller 105 is provided on the downstream side of the reading guide 103 and is guided by the reading guide 103 and conveys the document D for which image information has been read.

  The jump stand 162 is provided on the downstream side of the second platen roller 105, and scoops up the document D from the platen glass 161 and guides it to the lead discharge roller pair 102. The lead discharge roller pair 102 conveys the document D guided by the jump stand 162 to the discharge roller pair 18.

  The discharge roller pair 18 is provided downstream of the lead discharge roller pair 102 and discharges the document D conveyed by the lead discharge roller pair 102 to the outside of the apparatus. Further, when reading both sides of the document D, the discharge roller pair 18 switches back the document D and conveys it to the registration roller pair 11 via the sheet path 20. The discharge unit 10 stores the originals D, which have been discharged by the discharge roller pair 18 and whose image reading has been completed, so as to be stacked. The platen glass 161 is disposed at the document reading position 100, and the document table glass 3 is a place where documents D are fixedly placed one by one.

  The reader unit 150 includes a reader unit body 150 a that holds the platen glass 161 and the document table glass 3, a lamp 152 that irradiates light on the document D, and reflected light from the document D that corresponds to the light irradiated on the lamp 152. A plurality of guiding mirrors 153, 155, 156. In addition, the reader unit 150 includes a lens 157 that collects the reflected light guided by the plurality of mirrors 153, 155, and 156, and a CCD 158 that photoelectrically converts the reflected light collected by the lens 157 and outputs it as an image signal. It has.

  The reader unit main body 150a supports the document feeding unit 2 so that the platen glass 161 and the document table glass 3 can be freely opened and closed, and a lamp 152 and the like are positioned below the document reading position 100 via the platen glass 161. Thus, the lamp 152 and the like are accommodated.

  The lamp 152 and the mirror 153 are attached to the first optical bench 159, and the mirror 155 and the mirror 156 are attached to the second optical bench 151. The first optical bench 159 and the second optical bench 151 are accommodated inside the reader unit main body 150a. The first optical table 159 and the second optical table 151 are coupled to a motor (not shown) by a wire (not shown), and are parallel to the document table glass 3 (in the direction of the arrow shown in FIG. 1) by the rotational drive of the motor. Move controlled. The first optical table 159 and the second optical table 151 are moved by rotating the motor forward or backward with reference to a position detected by a position sensor (not shown), and are fixedly placed on the document table glass 3. The scanned document D is optically scanned. The CCD 158 photoelectrically converts the reflected light guided to the lens 157 via the mirrors 153, 155, and 156, and collected by the lens 157 on the CCD 158, and outputs it as an electronic image signal.

  Next, the conveyance outside guide 106 for guiding the document D conveyed by the read roller pair 101 onto the platen glass 161 will be described with reference to FIG. FIG. 3 is a perspective view showing the outer conveyance guide 106 according to the first embodiment of the present invention.

  As shown in FIG. 3, the outer guide 106 includes guide claws 107a, 107b, 107c, and 107d as a plurality of guide portions divided in the width direction perpendicular to the document transport direction. The plurality of guide claws 107 a to 107 d guide the document D onto the platen glass 161. Further, the plurality of guide claws 107a to 107d are formed such that the guide claw 107a located at the center in the width direction is the longest, and the document is conveyed toward the both sides from the guide claw 107a provided at the center. The length (L) in the direction is shortened. Specifically, the plurality of guide claws 107a to 107d are formed such that guide claw 107a (L4)> guide claw 107b (L3)> guide claw 107c (L2)> guide claw 107d (L1).

  Next, the operation of the image reading apparatus 1 according to the first embodiment will be described. When an operator instructs the image reading of the document D, the feeding roller 5 is lowered by an arm (not shown) and comes into contact with the upper surface of the document D to feed the document D. The documents D fed by the feeding roller 5 are separated one by one by the separation and conveyance roller 8 and the separation pad 6 and conveyed to the registration roller pair 11. In the registration roller pair 11, the front end of the conveyed document D is abutted against the nip portion, and a loop is generated in the document D to align the front end of the document D. Then, the document D with the leading edges aligned is conveyed onto the platen glass 161 along the outer conveyance guide 106 via the lead roller pair 101 as the registration roller pair 11 rotates.

  Here, the outer conveyance guide 106 includes a plurality of guide claws 107a to 107d divided in the width direction orthogonal to the document conveyance direction. Therefore, the rear end of the document D conveyed to the non-conveyance guide 106 lands on the platen glass 161 through the plurality of guide claws 107a to 107d. The plurality of guide claws 107a to 107d are formed such that the length (L) in the document conveying direction becomes shorter toward the both sides from the guide claw 107a provided at the center. Therefore, the rear end of the document D is sequentially landed on the platen glass from both sides in the width direction. At this time, the plurality of guide claws 107 a to 107 d are pushed by the original D by the stiffness of the original D and bent in the direction of the platen glass 161 to reduce the step difference from the platen glass 161.

  The document D transported on the platen glass 161 along the outer guide 106 is transported toward the document reading position 100 on the platen glass 161 by the first platen roller 104. When the document D is conveyed to the document reading position 100, the image of the document D is read by the reader unit 150 on the document reading position 100. When the reading of the document D by the reader unit 150 is completed, the document D that has been read is conveyed by the second platen roller 015 and guided to the discharge roller pair 18 via the lead discharge roller pair 102. The document D guided to the discharge roller pair 18 is discharged to the outside by the discharge roller pair 18 and is stored by the discharge unit 10 so as to be stacked.

  In the double-side mode, the discharge roller pair 18 does not discharge, but switches back, guides to the upper sheet path 20, and conveys toward the registration roller pair 11. When the registration roller pair 11 is reached, the back side of the document D is read in the same manner as described above.

  As described above, the image reading apparatus 1 according to the first embodiment is formed such that the length (L) in the document conveyance direction becomes shorter as the guide claws 107a to 107d of the outer conveyance guide 106 move from the center to both sides. Has been. Therefore, when the trailing edge of the document D lands on the platen glass 161, it can be sequentially landed on the platen glass 161 from both ends in the width direction. Thereby, it becomes possible to reduce the impact when landing on the platen glass 161. As a result, it is possible to suppress the occurrence of disturbance in the read image when reading the image information of the document.

  In the image reading apparatus 1 according to the first embodiment, the guide claws 107a to 107d of the outer conveyance guide 106 are divided in the width direction. In other words, strip-shaped guide claws are arranged in parallel in the width direction. Therefore, the guide claws 107a to 107d can be bent more easily than forming the guide claws with one member. Accordingly, for example, the sheet D is pushed by the conveyed document D and easily bent in the direction of the platen glass 161 due to the stiffness of the document D, and the step difference from the platen glass 161 can be reduced. As a result, the impact when landing on the platen glass 161 can be further reduced.

Second Embodiment
Next, an image reading apparatus 1A according to a second embodiment of the present invention will be described with reference to FIG. FIG. 4 is a perspective view showing an outer conveyance guide 206 according to the second embodiment of the present invention. The image reading apparatus 1A according to the second embodiment is different from the first embodiment in the shape of the outer guide. Therefore, in the second embodiment, the difference from the first embodiment, that is, the conveyance outside guide will be mainly described, and the same configurations as those in the first embodiment are denoted by the same reference numerals and the description will be given. Is omitted. In addition, in 2nd Embodiment, there exists an effect similar to 1st Embodiment about the thing of the structure similar to 1st Embodiment.

  As shown in FIG. 1, the image reading apparatus 1 </ b> A includes a document feeding unit 2 </ b> A, a platen glass 161, a reader unit 150, and a document table glass 3. The document feeding unit 2A is provided on the downstream side of the document tray 4, the feeding roller 5, the separation conveying roller 8 and the separation pad 6, the registration roller pair 11, and the registration roller pair 11, and the document guide unit 12A. The discharge roller pair 18 and the discharge unit 10 are provided.

  The document guide section 12A includes a read roller pair 101, a conveyance outer guide 206, a first platen roller 104, a second platen roller 105, a reading guide 103 having a white plate 103a, a jump table 162, and a lead discharge roller. A pair 102.

  As shown in FIG. 4, the outer conveyance guide 206 includes guide claws 207a, 207b, 207c, and 207d as a plurality of guide portions that are divided in the width direction orthogonal to the document conveyance direction. The plurality of guide claws 207 a to 207 d guide the document D onto the platen glass 161. The plurality of guide claws 207a to 207d are formed of a material having the highest hardness at the center in the width direction, and the hardness increases toward the both sides from the guide claw 207a provided at the center. Is formed to be low. Specifically, the hardness of the plurality of guide claws 207a to 207d is formed such that guide claw 207a> guide claw 207b> guide claw 207c> guide claw 207d.

  As described above, the image reading apparatus 1A according to the second embodiment is formed such that the hardness decreases as the guide claws 207a to 207d of the outer conveyance guide 206 move from the center to both sides. Therefore, it becomes easy to bend to the platen glass 161 side, so that it goes to both sides from a center part. Thereby, the length of the guide claws 207a to 207d of the outer guide 206 in the document transport direction can be shortened toward the both sides from the central portion. As a result, when the trailing edge of the document D lands on the platen glass 161, the document D can be sequentially landed on the platen glass 161 from both ends in the width direction, and the impact when landing on the platen glass 161 can be reduced. It becomes possible.

  Further, the guide claws 207a to 207d bend toward the platen glass 161, so that the step with the platen glass 161 can be reduced. Thereby, the impact at the time of landing on the platen glass 161 can be further reduced. As a result, it is possible to suppress the occurrence of disturbance in the read image when reading the image information of the document.

<Third Embodiment>
Next, an image reading apparatus 1B according to a third embodiment of the present invention will be described with reference to FIG. FIG. 5 is a perspective view showing an outer conveyance guide 306 according to the third embodiment of the present invention. The image reading apparatus 1B according to the third embodiment is different from the first embodiment in the shape of the outer guide. Therefore, in the third embodiment, the difference from the first embodiment, that is, the conveyance outside guide will be mainly described, and the same configurations as those in the first embodiment are denoted by the same reference numerals and the description will be given. Is omitted. In addition, in 3rd Embodiment, about the thing of the structure similar to 1st Embodiment, there exists an effect similar to 1st Embodiment.

  As shown in FIG. 1, the image reading apparatus 1 </ b> B includes a document feeding unit 2 </ b> B, a platen glass 161, a reader unit 150, and a document table glass 3. The document feeding unit 2B is provided on the downstream side of the document tray 4, the feeding roller 5, the separation transport roller 8 and the separation pad 6, the registration roller pair 11, and the registration roller pair 11, and the document guide unit 12B. The discharge roller pair 18 and the discharge unit 10 are provided.

  The document guide unit 12B includes a read roller pair 101, a conveyance outer guide 306, a first platen roller 104, a second platen roller 105, a reading guide 103 having a white plate 103a, a jump table 162, and a lead discharge roller. A pair 102.

  As shown in FIG. 5, the outer conveyance guide 306 includes guide claws 307a, 307b, 307c, and 307d as a plurality of guide portions divided in the width direction orthogonal to the document conveyance direction. The plurality of guide claws 307 a to 307 d guide the document D onto the platen glass 161. The plurality of guide claws 307a to 307d are formed such that the thickness (T) of the guide claw 307a located at the center in the width direction is the thickest, and both sides of the guide claws 307a provided at the center portion It is formed so that the thickness becomes thinner as it goes to. Specifically, the thickness of the plurality of guide claws 307a to 307d is formed such that guide claw 307a (T4)> guide claw 307b (T3)> guide claw 307c (T2)> guide claw 307d (T1). ing.

  As described above, the image reading apparatus 1B according to the third embodiment is formed such that the thickness (T) decreases as the guide claws 307a to 307d of the outer conveyance guide 306 move from the central portion to both sides. Therefore, it becomes easy to bend to the platen glass 161 side, so that it goes to both sides from a center part. Thereby, the length of the guide claws 307a to 307d of the outer conveyance guide 306 in the document conveyance direction can be shortened toward the both sides from the central portion. As a result, when the trailing edge of the document D lands on the platen glass 161, the document D can be sequentially landed on the platen glass 161 from both ends in the width direction, and the impact when landing on the platen glass 161 can be reduced. It becomes possible.

  Further, since the guide claws 307a to 307d bend toward the platen glass 161, the step with the platen glass 161 can be reduced, and the impact when landing on the platen glass 161 can be further reduced. . As a result, it is possible to suppress the occurrence of disturbance in the read image when reading the image information of the document.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above. In addition, the effects described in the embodiments of the present invention only list the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the embodiments of the present invention.

  For example, in the first embodiment, the plurality of guide claws 107a to 107d provided on the outer conveyance guide 106 have a length in the document conveyance direction that decreases from the center in the width direction orthogonal to the document conveyance direction toward both sides. However, the present invention is not limited to this. The plurality of guide claws 107a to 107d may be formed so that the length in the document conveyance direction increases from the center in the width direction toward both sides. The plurality of guide claws 107a to 107d may be configured so that the document D is grounded on the platen glass 191 sequentially from the center or both sides.

  In the second embodiment, the plurality of guide claws 207a to 207d provided on the outer conveyance guide 206 are formed of a material having a lower hardness from the center in the width direction perpendicular to the document conveyance direction to both sides. The present invention is not limited to this. The plurality of guide claws 207a to 207d may be formed of a material having a lower hardness from the center in the width direction toward both sides. The plurality of guide claws 207a to 207d have a larger amount of bending toward the platen glass 161 toward the center, and are pushed and bent by the document D being conveyed, so that the length in the document conveyance direction toward the center is increased. As long as the length of the platen glass is reduced, the step difference from the platen glass may be reduced.

  In the third embodiment, the plurality of guide claws 307a to 307d provided on the outer conveyance guide 306 are formed such that the thickness decreases from the center in the width direction orthogonal to the document conveyance direction to both sides. However, the present invention is not limited to this. The plurality of guide claws 307a to 307d may be formed so that the thickness becomes thinner from the center in the width direction toward both sides. The plurality of guide claws 307a to 307d have a greater amount of bending toward the platen glass 161 toward the center, and are pushed and bent by the document D being conveyed, so that the length in the document conveyance direction toward the center is increased. As long as the length of the platen glass is reduced, the step difference from the platen glass may be reduced.

1, 1A, 1B Image reading device 2, 2A, 2B Document feeding unit 12, 12A, 12B Document guide unit 100 Document reading position 106 Non-conveying guide (conveying guide)
107a, 107b, 107c, 107d Guide claw (guide part)
150 Reader unit (image reading unit)
161 Platen glass (transparent guide member)
206 Outside transport guide (transport guide)
207a, 207b, 207c, 207d Guide claw (guide part)
306 Outside transport guide (transport guide)
307a, 307b, 307c, 307d Guide claw (guide part)
D Manuscript

Claims (3)

In an image reading apparatus that reads image information of a document fed by a document feeding unit that feeds a sheet-like document at a predetermined document reading position,
A transparent guide member disposed at the predetermined document reading position;
An image reading unit disposed below the transparent guide member and reading image information of a document moving on the transparent guide member;
A document guide section disposed above the transparent guide member and guiding the document fed by the document feeding section along the transparent guide member so that image information is read by the image reading section; Prepared,
The document guide unit has a plurality of guide units for guiding the document fed by the document feeding unit onto the transparent guide member,
The plurality of guide portions are arranged side by side in the width direction orthogonal to the document conveyance direction, and the length in the document conveyance direction becomes shorter from the center in the width direction toward both sides.
An image reading apparatus. In an image reading apparatus that reads image information of a document fed by a document feeding unit that feeds a sheet-like document at a predetermined document reading position,
A transparent guide member disposed at the predetermined document reading position;
An image reading unit disposed below the transparent guide member and reading image information of a document moving on the transparent guide member;
A document guide section disposed above the transparent guide member and guiding the document fed by the document feeding section along the transparent guide member so that image information is read by the image reading section; Prepared,
The document guide unit has a plurality of guide units for guiding the document fed by the document feeding unit onto the transparent guide member,
The plurality of guide portions are arranged side by side in the width direction orthogonal to the document conveying direction, and the hardness decreases as going from the center in the width direction to both sides.
An image reading apparatus. In an image reading apparatus that reads image information of a document fed by a document feeding unit that feeds a sheet-like document at a predetermined document reading position,
A transparent guide member disposed at the predetermined document reading position;
An image reading unit disposed below the transparent guide member and reading image information of a document moving on the transparent guide member;
A document guide section disposed above the transparent guide member and guiding the document fed by the document feeding section along the transparent guide member so that image information is read by the image reading section; Prepared,
The document guide unit has a plurality of guide units for guiding the document fed by the document feeding unit onto the transparent guide member,
The plurality of guide portions are arranged side by side in the width direction orthogonal to the document conveyance direction, and the thickness decreases from the center in the width direction toward both sides.
An image reading apparatus.

Images