Reading device

Abstract

To suppress a sheet stuck across two transparent plates from being peeled in a reading device.SOLUTION: An image reading device 1 includes: a platen glass 21 for a conveyed document; a platen glass 20 for a stationary document located apart from the platen glass 21 in a left-right direction; a partition member 23 located between the platen glass 21 and the platen glass 20 and configured to guide a moving document; and a sheet 40 that faces a lower surface of the partition member 23, is adhered to the lower surface of the platen glass 21 and the lower surface of the platen glass 20 by a first adhesive layer 41a and a second adhesive layer 41b, and prevents foreign matter from falling from a gap between the platen glasses 20 and 21 and the partition member 23. The sheet 40 has a non-attached part 40a that is not attached to the lower surface of the partition member 23.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present disclosure relates to a reading device. [Background technology]

[0002] Some reading devices equipped with a document transport device have a sheet affixed to the gap between the transparent plate for transporting documents and the transparent plate for stationary documents. The sheet is affixed so as to straddle the underside of the transparent plate for transporting documents and the underside of the transparent plate for stationary documents. The sheet prevents foreign matter, etc., that falls through the gap from adhering to the image sensor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-020667 Summary of the Invention [Problem to be solved by the invention]

[0004] In the gap between the transparent plate for transporting documents and the transparent plate for stationary documents, a reinforcing metal plate is provided to reinforce the scanner top cover and the cover. The sheet is attached across the transparent plate for transporting documents, the scanner top cover, the reinforcing metal plate, and the transparent plate for stationary documents. If there is a step on the adhesive surface of each component, the sheet will deform to accommodate the step and be attached. If the scanner top cover or the reinforcing metal plate is recessed relative to the two transparent plates, the sheet may rebound from the step, causing it to lift up from the underside of the transparent plates and potentially peel off from the lifted area.

[0005] The present disclosure aims to prevent peeling of a sheet attached across two transparent plates in a reading device. [Means for solving the problem]

[0006] (1) A reading device according to the present disclosure comprises a first transparent plate, a second transparent plate positioned away from the first transparent plate in a first direction, a partition member positioned between the first transparent plate and the second transparent plate, and a sheet facing the lower surface of the partition member and attached to the lower surface of the first transparent plate and the lower surface of the second transparent plate, the sheet having a non-attached portion that is not attached to the lower surface of the partition member.

[0007] With the above configuration, even if a step is created where the lower surface of the partition member is recessed upward relative to the lower surface of the first transparent plate or the lower surface of the second transparent plate, the sheet is less likely to adhere to the partition member.

[0008] (2) The sheet has a first adhesive layer that adheres to the underside of the first transparent plate and a second adhesive layer that adheres to the underside of the second transparent plate, and the non-adhered portion may not have an adhesive layer.

[0009] (3) The sheet may have an adhesive layer that adheres to the lower surface of the first transparent plate and the lower surface of the second transparent plate, and the non-adhered portion may have a non-adhesive covering layer that covers the adhesive layer.

[0010] (4) A device comprising a first transparent plate, a second transparent plate positioned away from the first transparent plate in a first direction, a partition member positioned between the first transparent plate and the second transparent plate, and a sheet facing the lower surface of the partition member and attached to the lower surface of the first transparent plate and the lower surface of the second transparent plate, wherein the lower surface of the partition member facing the sheet may have an anti-adhesion shape.

[0011] With the above configuration, even if a step is created where the lower surface of the partition member is recessed upward relative to the lower surface of the first transparent plate or the lower surface of the second transparent plate, deformation of the sheet due to adhesion to the partition member can be suppressed.

[0012] (5) The adhesion prevention shape may be an uneven shape.

[0013] (6) A device comprising a first transparent plate, a second transparent plate positioned away from the first transparent plate in a first direction, a partition member positioned between the first transparent plate and the second transparent plate, and a sheet facing the lower surface of the partition member and attached to the lower surface of the first transparent plate and the lower surface of the second transparent plate, wherein the lower surface of the partition member and the sheet may be spaced apart in the vertical direction.

[0014] With the above configuration, even if a step is created where the lower surface of the partition member is recessed upward relative to the lower surface of the first transparent plate or the lower surface of the second transparent plate, the sheet will not deform in response to the step.

[0015] (7) The device further includes a carriage that moves along the underside of the first transparent plate and the underside of the second transparent plate, an image sensor supported on the carriage so as to be movable up and down, and a roller that protrudes upward at least partially from the image sensor and abuts against the underside of the first transparent plate and the underside of the second transparent plate, wherein the partition member has a convex portion that protrudes downward from the underside of the partition member, and when the carriage moves below the partition member, the roller moves below the convex portion.

[0016] With the above configuration, deformation of the sheet caused by the rollers during carriage movement is restricted.

[0017] (8) The document transport unit may further include a document transport section that transports a document above the first transparent plate, and the partition member may have a guide surface along which the document slides.

[0018] (9) The partition member may include a guide member having the guide surface, and a reinforcing member that reinforces the guide member.

[0019] (10) The lower surface of the partition facing the sheet may have an anti-adhesion shape.

[0020] (11) The lower surface of the partition member and the sheet may be spaced apart in the vertical direction.

[0021] (12) The sheet conveying device further includes a carriage that moves along the underside of the first transparent plate and the underside of the second transparent plate, an image sensor supported on the carriage so as to be movable up and down, and a roller that protrudes upward at least partially from the image sensor and abuts against the underside of the first transparent plate and the underside of the second transparent plate, and the partition member has a convex portion that may abut against the roller, sandwiching the sheet between them, when the carriage moves below the partition member.

[0022] (13) A reading device according to the present disclosure includes a first transparent plate, a second transparent plate positioned away from the first transparent plate in a first direction, a partition member positioned between the first transparent plate and the second transparent plate, and a sheet facing the lower surface of the partition member and attached to the lower surfaces of the first transparent plate and the second transparent plate, the sheet being elongated and rectangular along the partition member and having a slit on at least one of its long sides.

[0023] (14) The slits may be provided within the area of ​​the sheet that is attached to the first and second transparent plates.

[0024] (15) The slit may be provided in plurality along the long side.

[0025] (16) The sheet may further include a carriage that moves along the underside of the first transparent plate and the underside of the second transparent plate, an image sensor supported on the carriage so as to be movable up and down, and a roller that protrudes upward at least partially from the image sensor and abuts against the underside of the first transparent plate and the underside of the second transparent plate, and the slit may be arranged on either side of the range where the roller abuts against the sheet when the carriage moves.

[0026] (17) A reading device according to the present disclosure includes a first transparent plate, a second transparent plate positioned away from the first transparent plate in a first direction, a partition member positioned between the first transparent plate and the second transparent plate, and a sheet facing the lower surface of the partition member and attached to the lower surface of the first transparent plate and the lower surface of the second transparent plate, wherein the sheet has an elongated rectangular shape along the partition member and at least one long side is wavy.

[0027] (18) The wave shape may be provided within an area of ​​the sheet that is attached to the first and second transparent plates.

[0028] (19) The device further includes a carriage that moves along the underside of the first transparent plate and the underside of the second transparent plate, an image sensor supported on the carriage so as to be able to move up and down, and a roller that protrudes upward at least partially from the image sensor and abuts against the underside of the first transparent plate and the underside of the second transparent plate, wherein the wave-shaped shape is provided outside the range where the roller abuts against the sheet when the carriage moves, and the long side of the sheet may be a rectangular portion within the range where the roller abuts against the sheet. [Effects of the Invention]

[0029] According to the present disclosure, peeling of the sheet attached across two transparent plates is suppressed in a reading device. [Brief explanation of the drawings]

[0030] [Figure 1] FIG. 1 is a perspective view showing the external configuration of an image reading device 1 according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a perspective view showing the external configuration of the image reading device 1 according to the embodiment of the present disclosure. [Figure 3] 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is an enlarged cross-sectional view of a portion near the left end of the document table 2. As shown in FIG. [Figure 5]FIG. 5 is a cross-sectional view showing the configuration of the partition member 23. As shown in FIG. [Figure 6] FIG. 6 is a cross-sectional view showing the internal structure of the ADF 3. As shown in FIG. [Figure 7] FIG. 7 is a perspective view of the image reading unit 22. As shown in FIG. [Figure 8] FIG. 8 is a schematic cross-sectional view taken along the line VIII-VIII in FIG. [Figure 9] Figure 9(A) is a diagram showing the state in which sheet 40 according to the prior art has peeled off, Figure 9(B) is a diagram showing the adhesive state of sheet 40 according to the first embodiment, Figure 9(C) is a diagram showing the adhesive state of sheet 40 according to the second embodiment, and Figure 9(D) is a diagram showing the underside shape of partition member 23 according to the third embodiment. [Figure 10] FIG. 10(A) is a diagram showing the arrangement of the partition member 23 according to the fourth embodiment, and FIG. 10(B) is a diagram showing the shape of the partition member 23 according to the fifth embodiment. [Figure 11] FIG. 11(A) is a diagram showing the shape of a sheet 40 according to a modified example, FIG. 11(B) is a diagram showing the shape of a sheet 40 according to another modified example, and FIG. 11(C) is a diagram showing the shape of a sheet 40 according to yet another modified example. DETAILED DESCRIPTION OF THE INVENTION

[0031] The reading device according to the embodiment of the present disclosure will be described in detail below. Note that the following embodiment is merely an example of the present disclosure, and it goes without saying that the embodiment can be modified as appropriate without departing from the gist of the present disclosure. Furthermore, the up-down direction Dz is defined based on the state in which the image reading device 1 is installed so that it can be used. The front-to-back direction Dx is defined with the side on which the operation panel 5 is provided being the front side. The left-to-right direction Dy is defined when the image reading device 1 is viewed from the front side. The front side is also referred to as the front side, and the back side is also referred to as the rear side.

[0032] The image reading device 1 is realized as an image reading unit for reading images of a document in, for example, a copy device, a facsimile device, a scanner device, or a multi-function device (MFD) that has integrated copy, facsimile, and scanning functions.

[0033] [Image reader 1] As shown in FIGS. 1 to 4, the image reading device 1 has a document tray 2, an ADF (Automatic Document Feeder) 3, and a document cover 4. The document tray 2 functions as a FBS (Flatbed Scanner). The ADF 3 is provided on the document cover 4. The document cover 4 is attached so as to be able to be opened and closed via a hinge on the rear side (rear of the page) of the document tray 2. Note that the document cover 4 is indicated by a dashed line in FIG. 3, and is omitted in FIG. 4. The ADF 3 is an example of a document transport unit of the present disclosure.

[0034] As shown in FIG. 1, the document placing table 2 has an operation panel 5. The operation panel 5 is located on the front side of the document placing table 2. The operation panel 5 is equipped with various operation keys 11 and a liquid crystal display unit 12. A user uses the operation panel 5 to input desired commands. For example, the operation keys 11 are used to input "start" to start or resume document reading, and "stop" to stop or interrupt reading. The image reading device 1 receives these predetermined inputs and performs an operation according to the input. In addition to commands input from the operation panel 5, the image reading device 1 is also operated by commands transmitted from a computer connected to the computer via a printer driver, a scanner driver, or the like.

[0035] As shown in FIGS. 2 to 4 , the document placing platform 2 has glass platens 20 and 21 and an image reading unit 22. The glass platens 20 and 21 are located on the upper surface facing the document cover 4 in the closed position. The glass platens 20 and 21 are separated laterally. When the document cover 4 is opened relative to the document placing platform 2, the glass platens 20 and 21 are exposed as the upper surface of the document placing platform 2, as shown in FIG. 2 . When the document cover 4 is closed relative to the document placing platform 2, the entire upper surface of the document placing platform 2, including the glass platens 20 and 21, is covered by the document cover 4, as shown in FIGS. 1 and 3 . A pressing member 8 is provided on the lower surface of the document cover 4 to press down a document placed on the glass platen 20, as shown in FIG. 6 . The image reading unit 22 is located inside the document placing platform 2, facing the lower surfaces of the glass platens 20 and 21. The glass platen 20 is an example of a second transparent plate of the present disclosure. The platen glass 21 is an example of a first transparent plate in the present disclosure. The left-right direction is an example of a first direction in the present disclosure.

[0036] The document placing table 2 has a thin, rectangular parallelepiped casing 9. As shown in Figures 3 and 4, this casing 9 has an upper cover 9A and a lower frame 9B. The upper cover 9A is fitted to the lower frame 9B. The upper cover 9A has an opening 10 on its top surface. Platen glasses 20 and 21 are attached to the casing 9 so that they are exposed from this opening 10.

[0037] The lower frame 9B is formed like a container with an open top. The lower frame 9B has a base portion constituting the bottom plate, a side wall 158 standing from the periphery of the base portion, and a partition plate (not shown). The base portion, side wall 158, and partition plate are integrally formed. The partition plate separates an area where the image reading unit 22 is disposed from an area where the circuit board of the operation panel 5 and the like are disposed. The partition plate is provided on the front side of the lower frame 9B. The side wall 158 is roughly U-shaped in plan view. The side wall 158 has a right side wall 158A, a left side wall 158B, and a rear side wall (not shown). The right side wall 158A continues from the right end of the partition plate in the device depth direction. The left side wall 158B continues from the left end of the partition plate in the device depth direction. The rear side wall is provided on the rear side of the device.

[0038] 2, in this embodiment, the platen glass 20 is disposed on the right side as viewed from the front of the device. The platen glass 21 is disposed on the left side as viewed from the front of the device. A partition member 23, which will be described later, is positioned between the platen glasses 20 and 21.

[0039] The right side wall 158A, rear side wall, and partition plate support both ends and the right end of the glass platen 20 in the device depth direction. That is, the glass platen 20 is supported on three sides: the right side, front side, and rear side, and the left end on the glass platen 21 side is not supported. The left side wall 158B, rear side wall, and partition plate support both ends and the left end of the glass platen 21 in the device depth direction. That is, the glass platen 21 is supported on three sides: the left side, front side, and rear side, and the right end on the glass platen 20 side is not supported. With the glass platen 20 and 21 supported in this manner, the upper cover 9A is fitted to the lower frame 9B, thereby fixing the glass platen 20 and 21. As a result, the glass platen 20 is positioned right-justified and the glass platen 21 is positioned left-justified on the top surface of the document table 2, so that the glass platen 20 and 21 are aligned horizontally. The casing 9 has claws and grooves for engaging the upper cover 9A and the lower frame 9B, bosses for screwing various components, through-holes for electrical wiring, etc. These are designed appropriately depending on the embodiment of the document table 2, so detailed explanations will be omitted in this specification.

[0040] In this embodiment, the platen glasses 20 and 21 are supported by the side walls 158 of the lower frame 9B and the tops of the partition plates, but the support structure for the platen glasses 20 and 21 is not limited to this.

[0041] The platen glass 20 is where an original is placed when the image reading device 1 is used as an FBS. The platen glass 20 is formed to a size that allows it to support an original of the largest size that can be read by the FBS. In the image reading device 1, the platen glass 20 is formed to a size that allows A4-size and letter-size originals to be placed on it. The platen glass 20 is made of a transparent glass plate. Of course, instead of the platen glass 20, a plate member made of another transparent material such as transparent resin may be used.

[0042] Hereinafter, the document placed on the platen glass 20 will be referred to as the "static document," and the reading area for reading the image of the static document will be referred to as the "static document reading area." The exposed surface of the platen glass 20 corresponds to the static document reading area. The static document placed on the platen glass 20 is fixed onto the platen glass 20 when the document cover 4 is closed.

[0043] When reading an image of a document using FBS, the image reading unit 22 moves along the platen glass 20 from a predetermined home position and scans the reading surface of the stationary document. In this embodiment, the home position of the image reading unit 22 is set to be approximately below the platen glass 21. The home position is not limited to approximately below the platen glass 21. As long as the image reading device 1 is controlled to move the image reading unit 22 so that it passes under the end of the platen glass 20 on the platen glass 21 side when reading an image of a stationary document, another position may be set as the home position.

[0044] Hereinafter, the document transported by the ADF 3 will be referred to as the "moving document," and the reading area for reading the moving document will be referred to as the "moving document reading area." The platen glass 21 forms the moving document reading area. In other words, the exposed surface of the platen glass 21 corresponds to the moving document reading area. The platen glass 21 is also made of a transparent glass plate. Of course, instead of the platen glass 21, a plate member made of another transparent material such as transparent resin may be used. The platen glass 21 is formed in a vertically elongated shape that is long in the depth direction of the image reading device 1 and narrow in the width direction of the image reading device 1. The depth length of this platen glass 21 corresponds to the length of the image reading unit 22 in the device depth direction.

[0045] As shown in FIGS. 2 to 4, a partition member 23 is provided between the platen glass 20 and the platen glass 21. The partition member 23 is used as a positioning reference when placing a document on the platen glass 20. For this reason, the upper surface of the partition member 23 is provided with marks indicating the placement position according to document sizes such as A4 size and B5 size. In addition, a guide surface 24 is formed on the upper surface side of the partition member 23. The moving document is transported to the ADF 3 and passes over the platen glass 21 from the edge 16 toward the center of the document placing table 2, in other words, in the direction indicated by arrow 17. The guide surface 24 scoops up the moving document and guides it to the document transport path 32 (see FIG. 4) inside the ADF 3.

[0046] The partition member 23 is a long, flat member. The partition member 23 is formed in a vertically elongated shape that is long in the depth direction of the image reading device 1 and narrow in the width direction of the image reading device 1. The partition member 23 extends in the depth direction of the image reading device 1 on the upper surfaces of the platen glasses 20, 21. The partition member 23 separates the platen glasses 20, 21. The rear side surface of the lower frame 9B and the top of the partition plate support both ends of the partition member 23 in the depth direction of the image reading device 1. This allows the partition member 23 to be held on the upper surface of the document placing table 2.

[0047] As shown in FIG. 5, the partition member 23 includes a guide member 23a, a reinforcing member 23b, and an adhesive member 39. The guide member 23a is provided with a guide surface 24. The reinforcing member 23b is a sheet metal member that is stronger than the guide member 23a. The reinforcing member 23b reinforces the guide member 23a. The adhesive member 39 bonds the guide member 23a and the reinforcing member 23b together. The adhesive member 39 is, for example, double-sided tape. A rectangular sheet 40 that is elongated in the front-to-rear direction is attached to the lower surfaces of the platen glasses 20, 21. The sheet 40 faces the lower surface of the partition member 23 and prevents foreign matter from falling through the gap between the platen glasses 20, 21.

[0048] [Manuscript Cover 4 and ADF 3] 1 and 6, the document cover 4 has a paper feed tray 30 and a paper discharge tray 31. The paper feed tray 30 and the paper discharge tray 31 are arranged in two stages, one above the other, with the paper feed tray 30 on the upper side. The document cover 4 has an ADF 3. The ADF 3 transports documents successively from the paper feed tray 30 to the paper discharge tray 31. The image reading unit 22 waits below the platen glass 21. As the moving document is transported by the ADF 3 and moves over the platen glass 21, the image reading unit 22 reads the image of the moving document.

[0049] Original documents are placed on the paper feed tray 30 and transported by the ADF 3. Multiple original documents are stacked with their first sides facing up, with their leading edges in the paper feed direction inserted into the document transport path 32 (described later) and placed on the paper feed tray 30. As shown in FIG. 1 , the rear side of the paper feed tray 30 is bent downward to form a protective wall 26. The lower end of the protective wall 26 is connected to the upper surface of the document cover 4. The protective wall 26 prevents original documents on the paper output tray 31 from falling when the document cover 4 is opened relative to the document placing table 2. A notch 27 is formed in part of the housing of the ADF 3 below the front side of the paper feed tray 30. The original documents discharged to the paper output tray 31 can be seen through the notch 27 from the front side of the device, improving the visibility of the original documents. Small-sized documents are difficult to see because they are hidden by the paper feed tray 30, but by providing the notch 27, they can be seen through the gap between the paper feed tray 30 and the paper discharge tray 31. In this way, the visibility of small-sized documents is particularly improved.

[0050] The discharge tray 31 is located below and separated vertically from the feed tray 30, and is formed integrally with the upper surface of the document cover 4. After image scanning is complete, the document is discharged from the ADF 3 and held with its first side facing down on the discharge tray 31, separated from the document on the feed tray 30. Both side sections 28 of the discharge tray 31 are on the front and rear sides of the device. The both side sections 28 are sloped upward toward the front and rear sides of the device, respectively. When removing a document discharged onto the discharge tray 31, the document can be slid along the slopes of the both side sections 28 while pressing down on the document from above, making it easy to remove the document from the discharge tray 31.

[0051] As shown in FIG. 6, a document transport path 32 is formed inside the ADF 3. The document transport path 32 is a passage of a predetermined width through which documents can pass. The document transport path 32 is substantially U-shaped when viewed in vertical cross section. The document transport path 32 is continuously formed by the members, guide plates, guide ribs, etc. that make up the main body of the ADF 3. The document transport path 32 connects the paper feed tray 30 and the paper discharge tray 31 via the reading position on the platen glass 21. In this way, by providing the paper feed tray 30 and the paper discharge tray 31 in two stages, one above the other and connecting them with the document transport path 32, the width of the ADF 3 can be narrowed and made more compact.

[0052] The document transport path 32 runs from the paper feed tray 30 toward the left end of the document cover 4, then curves downward, turns rightward, reaches the reading position on the platen glass 21, and then heads toward the paper discharge tray 31. Thus, the document transport path 32 is broadly divided into three sections: an upper section 32A and a lower section 32C that form two straight sections, one above the other, and a curved section 32B that curves to connect the upper section 32A and the lower section 32C.

[0053] An original transport means is disposed in the original transport path 32. The original transport means transports originals from the paper feed tray 30 to the paper discharge tray 31. Specifically, as shown in FIG. 6, the original transport means includes a pickup roller 33, a separation roller 34, a transport roller 35, a paper discharge roller 36, and pinch rollers 37A, 37B, and 37C. The pinch rollers 37A and 37B are in pressure contact with the transport roller 35. The pinch roller 37C is in pressure contact with the paper discharge roller 36. Each of the rollers constituting the original transport means is rotated by a driving force transmitted from a motor (not shown).

[0054] As shown in FIG. 6, a pickup roller 33 and a separation roller 34 are provided near the most upstream end of the document transport path 32. The pickup roller 33 and the separation roller 34 have the same diameter. The pickup roller 33 is rotatably provided at the tip of the arm 29. The base end of the arm 29 is supported on a shaft that supports the separation roller 34. The separation roller 34 is rotatably provided at a position separated from the pickup roller 33 in the paper feed direction. The separation roller 34 abuts against the opposing surface of the document transport path 32. The pickup roller 33 and the separation roller 34 rotate at the same peripheral speed by a driving force transmitted from a motor (not shown). The arm 29 also moves up and down by a driving force transmitted from the motor.

[0055] The transport roller 35 is disposed inside the curved portion 32B of the document transport path 32. The transport roller 35 is also rotated by a driving force transmitted from a motor (not shown). The shafts of the pinch rollers 37A and 37B are biased toward the transport roller 35 by an elastic member such as a spring. The pinch roller 37A presses against the transport roller 35 from above. The pinch roller 37B presses against the transport roller 35 from below. The pinch rollers 37A and 37B also rotate in response to the rotation of the transport roller 35. As a result, the document is conveyed through the document transport path 32 by the rotational force of the transport roller 35 while being sandwiched between the pinch rollers 37A and 37B and the transport roller 35. In this embodiment, the pinch rollers 37A and 37B are configured to press against the upper and lower sides of one transport roller 35, but it goes without saying that the number, arrangement, and width of the pinch rollers can be changed as appropriate. It is also possible to adopt a configuration in which a long conveying roller is provided across the entire depth of the ADF 3, or a configuration in which a plurality of conveying rollers are provided on the same axis in the depth direction of the ADF 3.

[0056] The discharge roller 36 is disposed near the most downstream position of the document transport path 32. Similar to the transport roller 35, the discharge roller 36 is rotated by a driving force transmitted from a motor (not shown). A pinch roller 37C is provided opposite the discharge roller 36. The pinch roller 37C is also biased by a spring or the like and is pressed against the discharge roller 36.

[0057] The ADF 3 has an ADF cover 6. The ADF cover 6 is rotatably supported on the ADF main body 48. The ADF cover 6 covers the entire ADF 3, including the pickup roller 33 and the separation roller 34. The ADF cover 6 can be opened and closed relative to the ADF 3. When the ADF cover 6 is opened, a portion of the document transport path 32 inside the ADF 3 is exposed. This makes it possible to perform maintenance work such as clearing a jam.

[0058] When an image of a document is to be read, the ADF 3 feeds the document from the paper feed tray 30 and transports it to the upper portion 32A and curved portion 32B of the document transport path 32 by the transport rollers 35. When the leading edge of the document in the transport direction reaches the platen glass 21, the document is exposed from the ADF 3 and transported to the right on the platen glass 21. The image of the document moving on the platen glass 21 is read by the image reading unit 22 from below the platen glass 21. The guide surface 24 of the partition member 23 guides the leading edge of the document in the transport direction diagonally upward. This causes the document to head toward the lower portion 32C of the document transport path 32. Once the document has reached the lower portion 32C, it is discharged to the discharge tray 31 by the discharge rollers 36.

[0059] In this embodiment, the document transport path 32 has a curved portion 32B, but for example, the document transport path 32 may be formed in a substantially straight line from the paper feed tray 30 through the reading position on the platen glass 21 to the paper output tray 31.

[0060] [Carriage 168] As shown in Figures 3, 4, 6, 7, and 8, the carriage 168 is housed in the casing 9. The carriage 168 has an elongated rectangular parallelepiped shape. The carriage 168 has a bottom 68 and side walls 69. The side walls 69 extend upward from both ends of the bottom 68 in the shorter direction of the carriage 168. The side walls 69 form the sides of the carriage 168 in the reciprocating direction. The image reading unit 22 is housed in the space formed by the bottom 68 and the side walls 69. No side walls are provided at both ends of the bottom 68 in the longer direction of the carriage 168. One end of the housing 61 of the image reading unit 22 protrudes from one end of the carriage 168 in the longer direction. The upper end of the carriage 168 is open. This opening exposes the upper surface 60 of the image reading unit 22 mounted on the carriage 168.

[0061] A bearing portion (not shown) is provided on one of the side walls 69. The bearing portion is fitted with a fitting portion 64 of the image reading unit 22. A vertically elongated hole is formed in the bearing portion. The image reading unit 22 is fixed to the carriage 168 by inserting the shaft of the fitting portion 64 into this elongated hole. The shaft of the fitting portion 64 can slide up and down along the longitudinal direction of the elongated hole. Therefore, the image reading unit 22 can approach and move away from the glass platens 20 and 21 while maintaining its upper surface 60 parallel to the lower surfaces of the glass platens 20 and 21. The image reading unit 22 can also rotate about the shaft of the fitting portion 64. The image reading unit 22 can change its position between an upright position and a reclined position relative to the carriage 168, using this shaft as a center of elevation.

[0062] The carriage 168 has a shaft receiving portion (not shown) on its underside. When a guide shaft (not shown) is inserted into the shaft receiving portion and slidably fitted into the shaft receiving portion, the carriage 168 is supported by the guide shaft and becomes slidable in the axial direction of the guide shaft, in other words, in a direction perpendicular to the longitudinal direction of the carriage 168. The guide shaft is installed so that the carriage 168 spans the width direction of the casing 9. A connecting portion (not shown) protrudes downward from the side of the shaft receiving portion. The connecting portion grips a timing belt of a belt drive mechanism (not shown), thereby connecting the timing belt and the carriage 168. The belt drive mechanism receives driving force from a carriage motor (not shown) and moves the carriage 168 back and forth on the guide shaft along the underside of the platen glasses 20 and 21.

[0063] A spring receiving portion 185 is formed on the inside of the bottom surface of the carriage 168. A coil spring 176 is interposed between the image reading unit 22 and the carriage 168. The spring receiving portion 185 positions the coil spring 176. The image reading unit 22 is supported by the carriage 168 so that it can move up and down. The coil spring 176 also urges the image reading unit 22 toward the glass platens 20 and 21. As a result, the image reading unit 22 mounted on the carriage 168 is pressed against the lower surfaces of the glass platens 20 and 21, bringing them into close contact.

[0064] [Image reading unit 22] As shown in Figures 3, 4, 6, 7, and 8, roller units 177 are provided on both ends of the image reading unit 22. Holes (not shown) are formed on both ends of the top surface 60 of the image reading unit 22. By fitting pins protruding from the bottom surface of the roller units 177 into these holes, the roller units 177 are positioned and fixed to both ends of the image reading unit 22. The roller units 177 support two rollers 75 on the frame 74 so that they can roll in the short side direction. The two rollers 75 are spaced apart in the short side direction of the image reading unit 22, in other words, in the left-right direction. The two rollers 75 protrude upward from the top surface 60 of the image reading unit 22 by the same height. A coil spring 176 biases the image reading unit 22, pressing the rollers 75 toward the platen glasses 20 and 21 with a predetermined biasing force. This allows the image reading unit 22 to move smoothly along the glass plates 20 and 21 while maintaining a constant distance between the image reading unit 22 and the glass plates 20 and 21 .

[0065] The image reading unit 22 includes a housing 61, a light source (not shown), a light guide 62, a plurality of condenser lenses 63, and a CIS (Contact Image Sensor) 22a. In this embodiment, an LED (Light Emitting Diode) is used as the light source, but other light sources may also be used.

[0066] The housing 61 has an upper surface 60, which faces the lower surfaces of the glass platens 20 and 21, and is a flat, elongated rectangle in plan view. The longitudinal direction of the housing 61 is the depth direction of the image reading device 1. This direction coincides with the main scanning direction during image reading. The longitudinal length of the housing 61 corresponds to the largest size document that can be read by the image reading unit 22. The image reading unit 22 reads images using the longitudinal direction of the housing 61 as a reading line and outputs an electrical signal for each reading line. In this embodiment, a letter-sized document can be placed on the glass platen 20, so the reading line of the image reading unit 22 corresponds to the width of the letter-sized document. The housing 61 has a fitting portion 64. The fitting portion 64 positions the image reading unit 22 relative to the carriage 168 in a direction perpendicular to the longitudinal direction of the image reading unit 22. The fitting portion 64 has a base 65 and a shaft (not shown). The base 65 protrudes from one end of the housing 61 of the image reading unit 22 in the short direction. A shaft protrudes in the longitudinal direction from the base 65. This shaft fits into a bearing portion (not shown) of the carriage 168. This positions the image reading unit 22 in the short direction.

[0067] The light guide 62 is a substantially transparent reflective member. The light guide 62 is disposed on the top surface 60 of the housing 61 in the longitudinal direction of the housing 61. The light guide 62 deflects the light emitted from the LED onto the reading surface of the document. A plurality of condenser lenses 63 are disposed on the top surface 60 of the housing 61 in a row in the longitudinal direction of the housing 61 so as to be parallel to the light guide 62. The plurality of condenser lenses 63 condense the light reflected from the document onto the CIS 22a. For this reason, the distance between the image reading unit 22 and the platen glasses 20, 21 is set to a distance that allows the condenser lenses 63 to condense the light reflected from the document onto the light receiving element.

[0068] The CIS 22a is a line image sensor having multiple light-receiving elements. The multiple light-receiving elements are arranged in a row along the longitudinal direction of the housing 61 of the image reading unit 22. Each of the multiple light-receiving elements is a photoelectric conversion element, and outputs an electrical signal corresponding to the intensity of reflected light. The CIS 22a generates an electrical signal corresponding to the intensity of reflected light and outputs it as image data. In this embodiment, by employing a CIS image sensor, the support mechanism using the carriage 168 can be made smaller and lighter, thereby enabling the image reading device 1 to be made smaller and thinner. It goes without saying that various image sensors, such as a CCD (Charge Coupled Device) image sensor with a reduction optical system, can be applied to the image reading unit 22, not limited to a CIS image sensor. With this configuration, the image reading unit 22 irradiates the document with light emitted from an LED via a light guide 62 and collects the reflected light on the CIS 22a via a collecting lens 63, thereby reading an image from the document.

[0069] [Partition member 23 and sheet 40] 4, the partition member 23 is fitted into the gap between the glass platen 20 and the glass platen 21. Even when the partition member 23 is interposed between the glass platen 20 and the glass platen 21, the image reading unit 22 can move smoothly between the glass platen 20 and the glass platen 21 as long as the lower surfaces of the glass platen 20, the partition member 23, and the glass platen 21 form a flat, coplanar surface.

[0070] However, even if the tolerance is within the tolerance range, if the underside of the partition member 23 is recessed relative to the underside of the platen glasses 20, 21, the rebound of the sheet 40 at the step between the underside of the platen glasses 20, 21 and the underside of the partition member 23 may cause the sheet 40 to lift up from the underside of the platen glasses 20, 21 and peel off from the lifted area.

[0071] With respect to the platen glass 21, because the partition member 23 guides the moving document with the guide surface 24, the distance d1 between the reading position Pa on the platen glass 21 and the partition member 23 is small (FIG. 5). On the other hand, to prevent the reading of the moving document from being affected by the sheet 40, it is necessary to provide a distance between the reading position Pa on the platen glass 21 and the sheet 40. This inevitably reduces the contact area between the platen glass 21 and the sheet 40, so the problem of the sheet 40 peeling off is more likely to occur on the platen glass 21 than on the platen glass 20 (FIG. 9(A)).

[0072] [First Example] The sheet 40 shown in FIG. 9(B) has a first adhesive layer 41a that adheres to the platen glass 21 and a second adhesive layer 41b that adheres to the platen glass 20. The first adhesive layer 41a and the second adhesive layer 41b adhere the sheet 40 to the underside of the platen glasses 21, 20. The portion of the sheet 40 that faces the underside of the partition member 23 is a non-adhesive portion 40a that does not adhere to the underside of the partition member 23. The sheet 40 does not have an adhesive layer in the non-adhesive portion 40a. The sheet 40 itself does not have adhesive properties to the partition member 23. Therefore, the sheet 40 is not adhered to the underside of the partition member 23.

[0073] In the present embodiment, the platen glasses 20, 21 are made of glass. However, the present disclosure is not limited to this. Transparent resins such as ABS (Acrylonitrile, Butadiene, and Styrene) resin, acrylic resin, PET (Poly-Ethylene Terephthalate) resin, polycarbonate resin, and polyvinyl chloride resin can be used. The guide member 23a constituting the partition member 23 can be made of polyethylene resin, polypropylene resin, polyvinyl chloride resin, polystyrene resin, or the like. The reinforcing member 23b can be made of stainless steel or SECC (Steel Electrolytic Cold Commercial), or a resin material. A PET film can be used as the sheet 40. Furthermore, a polyester-based adhesive or an epoxy-based adhesive can be used as the first adhesive layer 41a and the second adhesive layer 41b.

[0074] [Second Example] The sheet 40 shown in FIG. 9(C) has an adhesive layer 41 on its upper surface facing the platen glasses 20, 21 and the underside of the partition member 23. The portion of the sheet 40 facing the underside of the partition member 23 is a non-adhesive portion 40a that does not adhere to the underside of the partition member 23. The non-adhesive portion 40a has a non-adhesive covering layer 42 that covers the adhesive layer 41. Release paper can be used as the covering layer 42. Any material other than release paper can be used as the covering layer 42 as long as it does not adhere to the partition member 23. Therefore, the sheet 40 is not adhered to the underside of the partition member 23. Note that paper that does not peel off from the sheet 40 may be used as the covering layer 42, or a coating material may be applied (by spray or brush) to form the covering layer 42.

[0075] [Third Example] As shown in FIG. 9(D), the partition member 23 has an anti-adhesion shape 43 on the lower surface facing the sheet 40. The anti-adhesion shape 43 is, for example, an uneven shape (embossed shape). This uneven shape is shaped so that the adhesive layer 41 provided on the sheet 40 does not adhere to the inner surface of the recess. For example, the depth of the recess may be made deep enough that the adhesive layer 41 cannot reach the bottom of the recess. It is desirable to select the anti-adhesion shape 43 depending on the mechanical properties of the adhesive layer 41, such as the fluidity.

[0076] [Fourth Example] 10(A), the lower surface of the partition member 23 is separated from the sheet 40 by a height d2 in the vertical direction. The lower surface of the partition member 23 is higher than the lower surfaces of the platen glasses 20, 21 and the sheet 40 by a height d2. The sheet 40 is bonded to the lower surfaces of the platen glasses 20, 21. Therefore, the lower surface of the partition member 23 and the sheet 40 are separated from each other by a height d2 in the vertical direction. Therefore, the lower surface of the partition member 23 and the sheet 40 are not bonded to each other.

[0077] [Fifth Example] In addition to the features of the fourth embodiment, as shown in Figure 10(B), the partition member 23 has a protrusion 23c that protrudes downward from the lower surface of the partition member 23. The protrusion 23c is disposed at a location where the roller 75 moves when viewed from above. Therefore, when the carriage 168 moves below the partition member 23, the roller 75 moves below the protrusion 23c. Because the protrusion 23c protrudes downward from the lower surface of the partition member 23, the difference in level between the lower end of the protrusion 23c and the glass platens 20, 21 is smaller than the difference in level between the lower surface of the partition member 23 and the glass platens 20, 21.

[0078] [Effects of the embodiment] (1) According to the first embodiment, the sheet 40 does not have an adhesive layer in the non-adhering portion 40a, and therefore the sheet 40 does not adhere to the underside of the partition member 23. Therefore, even if the underside of the partition member 23 is recessed relative to the underside of the glass platens 20, 21, the sheet 40 does not repel due to the step between the underside of the glass platens 20, 21 and the underside of the partition member 23. Therefore, the sheet 40 does not lift up from the underside of the glass platens 20, 21, and peeling of the sheet 40 can be suppressed.

[0079] (2) According to the second embodiment, the adhesive layer 41 in the non-adhesive portion 40a is covered with the non-adhesive covering layer 42, so the non-adhesive portion 40a of the sheet 40 does not adhere to the underside of the partition member 23. Furthermore, the difference in level between the underside of the glass platens 20, 21 and the underside of the partition member 23 is reduced by the thickness of the covering layer 42. Therefore, peeling of the sheet 40 from the underside of the glass platens 20, 21 can be suppressed.

[0080] (3) According to the third embodiment, the adhesive area between the sheet 40 and the partition member 23 is reduced, so that the sheet 40 is more likely to peel off from the underside of the partition member. Therefore, even if the sheet 40 bounces off the step between the underside of the platen glasses 20, 21 and the underside of the partition member 23, if the sheet 40 peels off from the underside of the partition member 23, peeling of the sheet 40 from the underside of the platen glasses 20, 21 can be prevented. In this sense, it is desirable that the adhesive prevention shape of the underside of the partition member 23 be a shape that minimizes the adhesive area with the sheet 40.

[0081] (4) According to the fourth embodiment, the sheet 40 is not bonded to the underside of the partition member 23, and therefore the sheet 40 is not bent due to the step between the underside of the platen glasses 20, 21 and the underside of the partition member 23. If the sheet 40 is not bent, no repulsive force is generated to elastically restore the sheet 40 from a bent state to a flat state. Therefore, peeling of the sheet 40 due to the repulsion of the sheet 40 can be suppressed.

[0082] (5) Because the coil spring 176 biases the image reading unit 22 toward the glass platens 20 and 21, the roller 75 is pressed against the sheet 40 as it moves below the partition member 23. If the sheet 40 is highly rigid and has a strong backbone, the sheet 40 will rebound strongly when the roller 75 overcomes the step. This promotes peeling of the sheet 40. According to the fifth embodiment, a convex portion is provided on the underside of the partition member 23, which reduces or eliminates the step between the sheet 40 and the glass platens 20 and 21, thereby preventing the roller 75 from pushing up the sheet 40. This prevents the sheet 40 from peeling off as described above.

[0083] [Variations] (1) The shape of sheet 40 may be as follows: In Figures 11(A), 11(B), and 11(C), the shaded areas 45 indicate the areas of sheets 40A, 40B, and 40C that come into contact with roller 75 as carriage 168 moves.

[0084] 11(A) is a rectangular shape that is elongated in the front-rear direction when viewed from above, and has slits 40b formed on the long side facing the platen glass 20. The length of the slits 40b in the left-right direction is within the area of ​​the sheet 40A that is adhered to the platen glasses 20, 21. The slits 40b are formed outside the area where the rollers 75 contact the sheet 40A (roller contact area) and on either side of the roller contact area. Therefore, the spacing between the slits 40b is wider than the width of the roller contact area in the front-rear direction.

[0085] If sheet 40 peels off, roller 75 repeatedly catches on the peeled area, and each time this happens, sheet 40 is pulled, causing the peeling to expand. In contrast, by providing slits 40b, the area in which sheet 40 is pulled can be limited to the area sandwiched between slits 40b. Therefore, even if sheet 40 peels off, the expansion of the peeling can be suppressed.

[0086] Here, if the slits 40b are provided only within the area bonded to the glass platens 20 and 21, the sheet 40A can fulfill its purpose of preventing foreign objects from falling. Providing the slits 40b outside the roller contact area prevents the sheet 40A from peeling off due to the roller 75 rubbing against the slits 40b. The sheet 40A is prone to peeling off when the roller 75 overcomes a step. However, sandwiching the roller contact area with the slits 40b prevents the peeling from spreading. Peeling of the sheet 40 tends to occur on the glass platen 21 side, so providing the slits 40b on the glass platen 21 side prevents the peeling from spreading. Furthermore, providing slits on the right side of the sheet 40A in addition to the left side further prevents the peeling from spreading. The slits 40b may be perpendicular to or oblique to the long sides of the sheet 40A. Instead of the slits 40b, perforations may be provided, or the sheet 40A may be made thinner. Even if the sheet 40A is configured to tear in the shape of the slits 40b when pulled along the main surfaces of the platen glasses 20 and 21, the expansion of the peeling can be suppressed.

[0087] 11(B), the long side of the sheet 40B facing the platen glass 21 is formed into a corrugated shape 40c, and the sheet 40B has a rectangular portion 40c1 that includes the roller contact area. Both ends of the rectangular portion 40c1 in the front-rear direction are located at the valleys of the corrugated shape 40c. In addition, in the left-right direction, the left side of the rectangular portion 40c1 is located at the same position as the peaks of the corrugated shape 40c.

[0088] If the long sides of the sheet 40B are corrugated 40c, the spread of peeling can be prevented at the valleys of the corrugated shapes 40c. Specifically, because the roller 75 moves left and right, when the roller 75 catches on the peeled portion of the sheet 40B, the sheet 40B is pulled left and right. As a result, when the peeled portion of the sheet 40B spreads to the valley in the front-rear direction, the peak portions of the sheet 40B beyond the valley are not peeled, and therefore can maintain their adhesion against the pulling of the roller 75. If a valley is included within the roller contact range, the roller 75 may catch on the sheet 40B on both sides of the valley in the front-rear direction, reducing the effectiveness of preventing the spread of peeling. In contrast, if rectangular portions 40c1 are provided at the same positions as the peaks of the peaks in the left and right direction, the adhesive area of ​​the sheet 40B is larger than when there is a valley, thereby reliably preventing the spread of peeling.

[0089] The corrugated shape 40d of the sheet 40C shown in FIG. 11(C) has a smaller period than the corrugated shape 40c of the sheet 40B shown in FIG. 11(B). This reduces the distance from the peeling point of the sheet 40C to the nearest valley. In other words, the rectangular portion 40d1 of FIG. 11(C) is narrower in the front-to-rear direction than the rectangular portion 40c1 of FIG. 11(B). In this sense, compared to the sheet 40B of FIG. 11(B), the sheet 40C can limit the expansion of peeling to a narrow range. Similarly, in the sheet 40A of FIG. 11(A), by shortening the distance between the slits 40b and the roller contact area or narrowing the spacing between the slits 40b in the front-to-rear direction, the distance from the peeling start point to the nearest slit 40b is shortened, thereby narrowing the range of peeling expansion.

[0090] The spacing between the slits 40b in the sheet 40A does not have to be constant along the entire long side of the sheet 40A. For example, the spacing may be narrower in the area including the roller contact area and wider in other areas. Although the above description uses an example in which multiple slits 40b are provided, providing at least one slit 40b can prevent the spread of peeling in the sheet 40A. Similarly, the period of the corrugated shapes 40c and 40d in the sheets 40B and 40C does not have to be constant along the entire long side of the sheets 40B and 40C. For example, the period may be shorter in the area including the roller contact area and longer in other areas. Providing at least one valley can prevent the spread of peeling in the sheets 40B and 40C. Furthermore, the amplitude range of the corrugated shape can be limited to the area of ​​the sheets 40B and 40C that is bonded to the platen glasses 20 and 21, thereby achieving the purpose of the sheets 40B and 40C of preventing foreign objects from falling.

[0091] (2) In the third embodiment, instead of or in addition to forming the underside of the partition member 23 into the anti-adhesion shape 43, a release agent may be applied to the underside of the partition member 23 to prevent adhesion of the sheet 40. (3) In the partition member 23, the guide member 23a may be integral with the upper cover 9A or may be separate from it. (4) The sheet 40 may be bonded to the platen glasses 20 and 21 using an adhesive that has adhesive properties to the lower surfaces of the platen glasses 20 and 21 but does not have adhesive properties to the lower surface of the partition member 23. (5) The first to fifth embodiments and their modifications may be implemented in any combination. [Explanation of symbols]

[0092] 1. Image reading device 2 Document stand 3. ADF 4. Document cover 5. Operation panel 6···ADF cover 8. Retaining member 9. Casing 9A···Top cover 9B Lower frame 20, 21 Platen glass 22 Image reading unit 22a···CIS 23 Partition member 23a...Guide member 23b Reinforcing member 23c···Convex part 24 Guideway 39... Adhesive material 40, 40A, 40B, 40C... Sheets 40a...Non-attached part 40b···Slit 40c, 40d...Wave shape 40c1, 40d1...Rectangular part 41...adhesive layer 41a...1st adhesive layer 41b...Second adhesive layer 42...covering layer 43...Adhesion prevention shape 69, 158...side wall 75. Laura 168···Carriage 177 Roller unit Pa... Reading position

Claims

1. A first transparent plate; a second transparent plate positioned apart from the first transparent plate in a first direction; a partition member positioned between the first transparent plate and the second transparent plate; a sheet facing the lower surface of the partition member and attached to the lower surface of the first transparent plate and the lower surface of the second transparent plate; The sheet has a non-adhering portion that does not adhere to the lower surface of the partition member.

2. the sheet has a first adhesive layer attached to the lower surface of the first transparent plate and a second adhesive layer attached to the lower surface of the second transparent plate; The reading device according to claim 1 , wherein the non-adhered portion does not have an adhesive layer.

3. the sheet has an adhesive layer that adheres to the lower surface of the first transparent plate and the lower surface of the second transparent plate; 2. The reading device according to claim 1, wherein the non-adhesive portion has a non-adhesive covering layer covering the adhesive layer.

4. A first transparent plate; a second transparent plate positioned apart from the first transparent plate in a first direction; a partition member positioned between the first transparent plate and the second transparent plate; a sheet facing the lower surface of the partition member and attached to the lower surface of the first transparent plate and the lower surface of the second transparent plate; The lower surface of the partition member facing the sheet has an adhesion-preventing shape.

5. 5. The reading device according to claim 4, wherein the adhesion prevention shape is an uneven shape.

6. A first transparent plate; a second transparent plate positioned apart from the first transparent plate in a first direction; a partition member positioned between the first transparent plate and the second transparent plate; a sheet facing the lower surface of the partition member and attached to the lower surface of the first transparent plate and the lower surface of the second transparent plate; The lower surface of the partition member and the sheet are spaced apart in the vertical direction.

7. a carriage that moves along the lower surface of the first transparent plate and the lower surface of the second transparent plate; an image sensor supported by the carriage so as to be vertically movable; a roller at least partially protruding upward from the image sensor and contacting a lower surface of the first transparent plate and a lower surface of the second transparent plate; the partition member has a protrusion that protrudes downward from a lower surface of the partition member, 7. The reading device according to claim 6, wherein when the carriage moves below the partition member, the roller moves below the convex portion.

8. a document transport unit that transports a document above the first transparent plate, 2. The reading device according to claim 1, wherein the partition member has a guide surface along which the document slides.

9. The partition member is a guide member having the guide surface; 9. The reading device according to claim 8, further comprising a reinforcing member for reinforcing the guide member.

10. 2. The reading device according to claim 1, wherein the lower surface of the partition that faces the sheet has an anti-adhesion shape.

11. 2. The reading device according to claim 1, wherein the lower surface of the partition member and the sheet are spaced apart in the vertical direction.

12. a carriage that moves along the lower surface of the first transparent plate and the lower surface of the second transparent plate; an image sensor supported by the carriage so as to be vertically movable; a roller at least partially protruding upward from the image sensor and contacting a lower surface of the first transparent plate and a lower surface of the second transparent plate; The partition member has a protrusion, 12. The reading device according to claim 11, wherein the convex portion contacts the roller with the sheet sandwiched between them when the carriage moves below the partition member.

13. A first transparent plate; a second transparent plate positioned apart from the first transparent plate in a first direction; a partition member positioned between the first transparent plate and the second transparent plate; a sheet facing the lower surface of the partition member and attached to the lower surface of the first transparent plate and the lower surface of the second transparent plate; The above sheet is The partition member has an elongated rectangular shape, A reader having a slit on at least one of its long sides.

14. The reading device according to claim 13, wherein the slit is provided within an area of ​​the sheet that is attached to the first and second transparent plates.

15. The reading device according to claim 13, wherein a plurality of the slits are provided along the long side.

16. a carriage that moves along the lower surface of the first transparent plate and the lower surface of the second transparent plate; an image sensor supported by the carriage so as to be vertically movable; a roller at least partially protruding upward from the image sensor and contacting a lower surface of the first transparent plate and a lower surface of the second transparent plate; 14. The reading device according to claim 13, wherein the slits are provided on either side of a range where the roller abuts against the sheet when the carriage moves.

17. A first transparent plate; a second transparent plate positioned apart from the first transparent plate in a first direction; a partition member positioned between the first transparent plate and the second transparent plate; a sheet facing the lower surface of the partition member and attached to the lower surface of the first transparent plate and the lower surface of the second transparent plate; The above sheet is The partition member has an elongated rectangular shape, A reading device in which at least one of the long sides is wavy.

18. The reading device according to claim 17, wherein the wave shape is provided within an area of ​​the sheet that is attached to the first and second transparent plates.

19. a carriage that moves along the lower surface of the first transparent plate and the lower surface of the second transparent plate; an image sensor supported by the carriage so as to be vertically movable; a roller at least partially protruding upward from the image sensor and contacting a lower surface of the first transparent plate and a lower surface of the second transparent plate; the wave-shaped shape is provided outside a range where the roller contacts the sheet when the carriage moves, 18. The reading device according to claim 17, wherein the long side of the sheet has a rectangular portion within a range where the roller contacts the sheet.

Images