Image reading device

Abstract

To avoid a medium discharged from entering into a tray reliably.SOLUTION: A medium discharge device comprises discharge means discharging the medium and a medium receiving tray 22 receiving the medium discharged from the discharge means and capable of switching an expansion state and a storage state, and the medium receiving tray comprises a base tray 56, a main expansion part 58 situated at a medium discharge direction side than the base tray in the expansion state and capable of storing and expanding and at least one sub expansion part 60 situated at the medium discharge direction side than the main expansion part in the expansion state and capable of storing and expanding, and storage space 70 storing at least one sub expansion part is formed and a first projection part 66 projecting toward the storage space is provided as well at the base tray.SELECTED DRAWING: Figure 14

Description

Technical Field

[0001] The present invention relates to a medium discharging device that discharges a medium, and an image reading device including the medium discharging device.

Background Art

[0002] Some scanners, which are an example of an image reading device, are provided with an automatic document feeder (also called an ADF (Auto Document Feeder)) as a medium, and are configured to be able to automatically feed and read a plurality of documents. The plurality of fed documents are read by an image reading unit provided on the downstream side in the conveyance direction of the automatic document feeder.

[0003] In such a scanner, a pair of discharge rollers is provided on the downstream side of the image reading unit, and the document is discharged to the outside of the device, and a medium discharging device configured to stack the discharged plurality of documents in the order of discharge on a paper discharge receiving tray (sometimes called a paper discharge stacker) may be provided (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In addition, there is known a paper discharge receiving tray configured to be able to switch between a storage state and a deployed state. For example, in a multi-stage paper discharge receiving tray, a tray on the free end side (sub-tray) is stored in a tray on the base end side (base tray), and the sub-tray is pulled out from the base tray during use, and used in a state where the medium receiving surface is deployed.

[0006] However, a storage space for storing the sub-tray is formed in the base tray. When the sub-tray is pulled out from the base tray, there is a risk that the discharged medium may enter the storage space or even deeper inside the storage space. In particular, when the discharged medium is small, such as card-sized, the problem of entry is likely to occur. Further, the medium receiving surface may be upwardly inclined toward the free end side. When a small-sized medium is discharged onto such an upwardly inclined surface, the discharged medium may return to the base tray side, and the problem of entry is likely to occur. Furthermore, when a stopper for preventing the medium from protruding is provided at the tip of the paper discharge receiving tray, the discharged medium may contact the stopper and bounce back, resulting in the problem of entry.

[0007] Therefore, the present invention has been made in view of such problems, and an object thereof is to more reliably avoid the entry of the discharged medium into the tray.

Means for Solving the Problems

[0008] A medium discharge device according to a first aspect of the present invention for solving the above problems includes a discharge means for discharging a medium, and a medium receiving tray that can be switched between a deployed state and a stored state and receives the medium discharged by the discharge means. The medium receiving tray includes a base tray, a main deployable portion that can be stored and deployed and is located on the medium discharge direction side of the base tray in the deployed state, and at least one sub-deployable portion that can be stored and deployed and is located on the medium discharge direction side of the main deployable portion in the deployed state. The base tray is formed with a storage space for storing at least one of the sub-deployable portions, and is provided with a first protruding portion that protrudes toward the storage space.

[0009] According to this aspect, a media receiving tray capable of switching between a deployed state and a stored state includes a base tray, a main deployment section, and a sub - deployment section. In the base tray, a storage space for storing at least one sub - deployment section is formed. Therefore, when the sub - deployment section is deployed, there is a possibility that the discharged media may enter the storage space or further into the area deeper than the storage space. However, in this aspect, in the base tray, in the storage space, a first protruding portion protruding toward the storage space is provided. Thus, the first protruding portion restricts the entry of the media into the storage space or further into the area deeper than the storage space.

[0010] A second aspect of the present invention is, in the first aspect, at a position in the main deployment section facing the storage space, a second protruding portion is provided which protrudes into the storage space and has a portion overlapping with the first protruding portion in the thickness direction of the media receiving tray, and the overlap between the first protruding portion and the second protruding portion is maintained regardless of the deployment position of the main deployment section.

[0011] According to this aspect, at a position in the main deployment section facing the storage space, a second protruding portion is provided which protrudes into the storage space and has a portion overlapping with the first protruding portion in the thickness direction of the media receiving tray, and the overlap between the first protruding portion and the second protruding portion is maintained regardless of the deployment position of the main deployment section. Therefore, not only in the state where the main deployment section is fully deployed but also in the semi - deployed state, the entry of the media into the storage space or further into the area deeper than the storage space can be restricted. As described above, a media discharge device capable of more reliably avoiding the entry of the media into the storage space or further into the area deeper than the storage space can be provided.

[0012] A third aspect of the present invention is, in the second aspect, either one of the first protruding portion and the second protruding portion is constituted by a first rib extending in the media discharge direction, and the other of the first protruding portion and the second protruding portion is constituted by a second rib extending in a direction intersecting the media discharge direction.

[0013] According to this aspect, either one of the first protrusion and the second protrusion is constituted by a first rib extending in the medium discharge direction, and the other of the first protrusion and the second protrusion is constituted by a second rib extending in a direction intersecting the medium discharge direction. Therefore, it is possible to more reliably suppress the entry of the medium into the storage space, or further into the space deeper than the storage space.

[0014] A fourth aspect of the present invention is that, in the third aspect, a plurality of the first ribs are provided at appropriate intervals in a direction intersecting the medium discharge direction, and a maximum arrangement interval among the plurality of the first ribs is smaller than the size of a medium having the smallest size in the medium width direction, which is a direction intersecting the medium discharge direction, among the media that can be discharged by the discharge means.

[0015] According to this aspect, a plurality of the first ribs are provided at appropriate intervals in a direction intersecting the medium discharge direction, and a maximum arrangement interval among the plurality of the first ribs is smaller than the size of a medium having the smallest size in the medium width direction, which is a direction intersecting the medium discharge direction, among the media that can be recorded by the recording means and discharged by the discharge means. Therefore, regardless of the size of the medium, it is possible to satisfactorily regulate the entry of the medium into the storage space, or further into the space deeper than the storage space.

[0016] A fifth aspect of the present invention is that, in any one of the first to fourth aspects, the sub-deployment portion includes a tip deployment portion located on the most medium discharge direction side in the deployed state, and a stopper portion that is slidable with respect to the tip deployment portion and can switch between a regulation posture in which a surface intersecting the medium receiving surface is formed by rotation to regulate the protrusion of the medium and a storage posture in which the posture is along the medium receiving surface.

[0017] According to this aspect, a stopper portion is provided that can switch between a regulation posture in which a surface that intersects the medium receiving surface is formed by rotation to regulate the protrusion of the medium, and a storage posture in which the posture is along the medium receiving surface. Therefore, the stopper can suppress the protrusion of the medium from the medium receiving tray when the medium is discharged.

[0018] A sixth aspect of the present invention is, in the fifth aspect, wherein a plurality of recesses are formed in the tip deployment portion along the sliding direction of the stopper portion, and the stopper portion is formed with a convex portion that enters the recess when the stopper portion is switched from the storage posture to the regulation posture.

[0019] According to this aspect, a plurality of recesses are formed in the tip deployment portion along the sliding direction of the stopper portion, and the stopper portion is formed with a convex portion that enters the recess when the stopper portion is switched from the storage posture to the regulation posture. Therefore, the engagement between the recess and the convex portion can reliably hold the stopper portion at a desired position. In particular, it is possible to suppress the displacement of the stopper portion caused by the medium to be discharged pushing the stopper portion.

[0020] A seventh aspect of the present invention is, in the fifth or sixth aspect, comprising switching means for switching the posture of the stopper portion and control means for controlling the switching means, and the control means is based on the size information of the medium to be discharged. When the tip of the medium to be discharged exceeds the position of the stopper portion when discharging to the medium receiving tray, the stopper portion is tilted upstream or downstream in the medium discharge direction from the regulation posture.

[0021] According to this aspect, there are provided switching means for switching the posture of the stopper portion, and control means for controlling the switching means. The control means, based on the size information of the medium to be discharged, if the tip of the medium to be discharged exceeds the position of the stopper portion when being discharged onto the medium receiving tray, will tilt the stopper portion from the restricted posture to the upstream or downstream side in the medium discharge direction. Thus, when discharging a long medium, the problem that the stopper portion obstructs the discharge of the long medium can be avoided.

[0022] According to the eighth aspect of the present invention, in any one of the fifth to seventh aspects, the base tray is capable of being stored and deployed with respect to the housing of the medium discharge device. By switching the stopper portion from the restricted posture to the storage posture, the base tray, the main deployment portion, and the sub - deployment portion are locked in the stored state, and by switching the stopper portion from the storage posture to the restricted posture, lock means for releasing the lock is provided.

[0023] According to this aspect, the base tray is capable of being stored and deployed with respect to the housing of the medium discharge device. By switching the stopper portion from the restricted posture to the storage posture, the base tray, the main deployment portion, and the sub - deployment portion are locked in the stored state, and by switching the stopper portion from the storage posture to the restricted posture, lock means for releasing the lock is provided. Therefore, for example, when carrying the device, the problem that the medium receiving tray is unintentionally deployed can be avoided. In addition, since the operation of the lock means is borne by the stopper portion, there is no need to provide a dedicated operation member, and an increase in the cost of the device can be suppressed.

[0024] An image reading device according to the ninth aspect of the present invention includes reading means for reading the surface of a medium, and a medium discharge device according to any one of the first to eighth aspects provided downstream of the reading means in the medium conveyance direction. According to this aspect, in the image reading device, the same operational effects as those of any one of the above - described first to eighth aspects can be obtained.

Brief Description of the Drawings

[0025]

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Mode for Carrying Out the Invention

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In each embodiment, the same components are denoted by the same reference numerals, and the description will be given only in the first embodiment, and the description of the configuration will be omitted in the subsequent embodiments.

[0027] FIG. 1 is a perspective view of the non-feed state of the medium in the image reading apparatus according to the present invention, FIG. 2 is a perspective view showing a state where the cover is opened and the medium receiving tray is deployed in the image reading apparatus according to the present invention, FIG. 3 is a side view showing the medium feed path in the image reading apparatus according to the present invention, FIG. 4 is a perspective view showing the deployed state of the base tray of the medium receiving tray, FIG. 5 is a side view showing a state where the main deployment part is deployed from the base tray in the medium receiving tray, and FIG. 6 is a side view showing a state where the first sub-deployment part is deployed from the main deployment part in the medium receiving tray.

[0028] FIG. 7 is a side view showing a state where the tip deployment part is deployed from the first sub-deployment part in the medium receiving tray, FIG. 8 is a perspective view of the base tray viewed from below, FIG. 9 is a perspective view of the main deployment part viewed from above, FIG. 10 is a bottom view of the base tray and the main deployment part in a state where the main deployment part is housed with respect to the base tray, FIG. 11 is a bottom view showing the relationship between the first rib and the second rib in a state where the main deployment part is housed with respect to the base tray, and FIG. 12 is a bottom view of the base tray and the main deployment part in a state during the switching of the main deployment part from the housed state to the deployed state with respect to the base tray.

[0029] FIG. 13 is a bottom view showing the relationship between the first rib and the second rib in a state during the switching of the main deployment part from the housed state to the deployed state with respect to the base tray, FIG. 14 is a side sectional view of the A-A cross section in FIG. 13, FIG. 15 is a bottom view of the base tray, the main deployment part, and the sub-deployment part in a state where the main deployment part and the sub-deployment part are deployed with respect to the base tray, FIG. 16 is a bottom view showing the relationship between the first rib and the second rib in a state where the main deployment part is deployed with respect to the base tray, FIG. 17 is a perspective view showing the storage posture of the stopper part in the tip deployment part, FIG. 18 is a perspective view showing the restricted posture of the stopper part in the tip deployment part, and FIG. 19 is a perspective view showing a state where the stopper part is slid in the tip deployment part.

[0030] FIG. 20 is a perspective view showing a modification example of an embodiment of a tip deployment section and a stopper section, FIG. 21 is a side sectional view showing a slider lock structure in the modification example of the stopper section, FIG. 22 is a schematic view of a media receiving tray in a second embodiment, FIG. 23 is a side sectional view showing a locked state of a main deployment section and a sub-deployment section in the media receiving tray in a third embodiment, FIG. 24 is a side sectional view showing an unlocked state of the main deployment section and the sub-deployment section in the media receiving tray in the third embodiment, FIG. 25 is a perspective view showing an image reading section in an image reading apparatus, and FIG. 26 is a sectional view of a discharge driving roller.

[0031] Also, in each figure, in the X - Y - Z coordinate system shown, the X direction is the apparatus width direction and also the paper width direction, the Y direction is the media conveyance direction in the image reading apparatus, and the Z direction is a direction orthogonal to the Y direction, generally indicating a direction orthogonal to the surface of the media to be conveyed. Note that, in each figure, the - Y direction side is the front side of the apparatus, and the + Y direction side is the back side of the apparatus.

[0032] ■■■First Embodiment■■■■ <<<Regarding the Image Reading Apparatus>>> Referring to FIGS. 1 and 2, the scanner 10 as an "image reading apparatus" includes a lower unit 12, an upper unit 14, a cover unit 16, and a media discharge device 18. The media discharge device 18 includes a pair of discharge rollers 20 (see FIG. 3) described later and a media receiving tray 22 (see FIG. 2). Note that the outer contours of the lower unit 12 and the upper unit 14 constitute the housing of the scanner 10.

[0033] Also, on the upper part of the back side of the lower unit 12, the cover unit 16 is rotatably attached to the lower unit 12. The cover unit 16 can take a non - feeding state in which it covers the upper part of the upper unit 14 and the feeding port 26 (see FIG. 2) as shown in FIG. 1, and a feeding - possible state in which it rotates to the back side of the apparatus as shown in FIG. 2 from the non - feeding state in FIG. 1 and opens the feeding port 26. And when the cover unit 16 is in the feeding - possible state as shown in FIG. 2, the back surface of the cover unit 16 functions as a media placement surface 16a for placing a plurality of media P.

[0034] Further, a discharge port 28 for discharging the medium P is provided on the front side of the apparatus of the lower unit 12. The lower unit 12 is also provided with a medium receiving tray 22 that can be pulled out from the discharge port 28 toward the front side of the apparatus. The medium receiving tray 22 can be switched between a storage state (see FIG. 1) stored at the bottom of the lower unit 12 and a deployed state (see FIG. 2) pulled out to the front side of the apparatus. Further, as will be described later, the medium receiving tray 22 is configured by connecting a plurality of tray members, and is configured such that the length pulled out from the discharge port 28 can be adjusted according to the length of the medium P to be discharged.

[0035] <Regarding the paper feed path in the scanner> Next, mainly with reference to FIG. 3, the medium feed path 24 in the scanner 10 will be described. In FIG. 3, the lower unit 12, the upper unit 14, and the medium receiving tray 22 are shown with only the outer contour portions indicated by phantom lines, and the thick solid line with the symbol P indicates the guide path of the paper fed along the medium feed path 24 in the scanner 10.

[0036] In the medium feed path 24, in the direction from the upstream side to the downstream side in the feed direction, a medium placement surface 16a, a feed roller 30, a separation roller 32, a pair of conveyance rollers 34, an image reading unit 36 as a "reading means", a pair of discharge rollers 20 as a "discharge means", and the medium receiving tray 22 are provided in this order. The medium P is fed to the image reading unit 36 along the medium feed path 24, and after at least one surface is read by the image reading unit 36, it is discharged to the medium receiving tray 22.

[0037] The feeding roller 30 is configured to be rotationally driven by a drive source (not shown). The outer peripheral surface of the feeding roller 30 is made of a high-friction material (for example, an elastomer such as rubber). Also, a separating roller 32 is provided at a position facing the feeding roller 30. The separating roller 32 is provided in a state of being biased toward the feeding roller 30 by a biasing means (not shown). The outer peripheral surface of the separating roller 32 is made of a high-friction material (for example, an elastomer such as rubber), similar to the feeding roller 30.

[0038] Also, a torque limiter 38 is provided on the separating roller 32. The separating roller 32 is configured to receive a driving torque in a direction opposite to the direction of feeding the original downstream (counterclockwise in FIG. 3), which is the rotational direction of feeding the original downstream (clockwise in FIG. 3) from a torque applying means (not shown) or a drive source such as a motor, via the torque limiter 38. And when the separating roller 32 is in direct contact with the feeding roller 30, since the rotational torque received from the feeding roller 30 exceeds the limit torque of the torque limiter 38, the separating roller 32 rotates in a driven manner following the feeding roller 30 (clockwise in FIG. 3).

[0039] The pair of conveying rollers 34 includes a conveying drive roller 34a and a conveying driven roller 34b that rotates in a driven manner with respect to the conveying drive roller 34a. In the present embodiment, the conveying drive roller 34a is configured to be rotationally driven by a drive source (not shown).

[0040] An image reading unit 36 is provided on the downstream side of the pair of conveying rollers 34. Here, the image reading unit 36 includes an upper reading unit 40 provided in the upper unit 14 so as to face the upper surface of the medium P conveyed along the medium feeding path 24, and a lower reading unit 42 provided in the lower unit 12 so as to face the lower surface of the medium P conveyed along the medium feeding path 24. The upper reading unit 40 and the lower reading unit 42 are configured as reading units, and are configured as a close contact type image sensor module (CISM) as an example.

[0041] The discharge roller pair 20 includes a discharge drive roller 44 and a discharge driven roller 46 that rotates in a driven manner with respect to the discharge drive roller 44. The discharge drive roller 44 is rotationally driven by a drive source (not shown).

[0042] Here, referring to FIGS. 25 and 26, two discharge drive rollers 44 are provided at intervals in the device width direction. The two discharge drive rollers 44 are axially attached to the drive shaft 48 so as to rotate together with the drive shaft 48. Also, in the device width direction, auxiliary rollers 50 are lightly press-fitted to the drive shaft 48 outside the discharge drive rollers 44. And in the device width direction, the discharge drive rollers 44 and the auxiliary rollers 50 are attached to the drive shaft 48 with a gap 52 therebetween.

[0043] When the discharge roller pair 20 in the scanner 10 discharges a thin medium, the rear end of the medium P may remain on the discharge drive roller 44. And when discharging a thin medium, the auxiliary roller 50 can push the rear end of the medium P in the discharge direction and reliably separate the rear end of the medium P from the discharge drive roller 44. Also, since a gap 52 is provided between the auxiliary roller 50 and the discharge drive roller 44, when the auxiliary roller 50 idles with respect to the drive shaft 48, it can be prevented that the auxiliary roller 50 contacts and wears against the discharge drive roller 44.

[0044] Also, in the lower unit 12, a control unit 54 is provided as an example of "control means". The control unit 54 is configured as an electric circuit including a plurality of electronic components. The control unit 54 controls the upper reading unit 40 and the lower reading unit 42. Further, the control unit 54 controls a drive source (not shown) such as a drive motor that rotationally drives the feed roller 30, the conveyance drive roller 34a, and the discharge drive roller 44.

[0045] In addition, the control unit 54 is configured to control the conveyance of the medium P and the image reading operation in the scanner 10. Further, the control unit 54 may control the operations necessary for executing the original reading operation in the scanner 10 according to an instruction from the outside (such as a PC).

[0046] <<<Configuration of the media receiving tray>>> With reference to FIGS. 4 to 20, the configuration of the media receiving tray 22 will be described. As shown in FIGS. 2 and 4 to 7, the media receiving tray 22 includes a base tray 56, a main deployment unit 58, and a sub-deployment unit 60. The sub-deployment unit 60 includes a first sub-deployment unit 61, a tip deployment unit 62, and a stopper unit 64. In the following description, the discharge direction of the medium P is the front side in the depth direction of the apparatus, the sliding direction between the members is the depth direction of the apparatus, and the width direction of the medium P is the width direction of the apparatus.

[0047] The base tray 56 is configured to be slidable with respect to the lower unit 12, and can be switched between a stored state (see FIG. 1) stored in the lower unit 12 and a deployed state (see FIG. 4) deployed from the lower unit 12 toward the front side in the discharge direction of the medium P, that is, the depth direction of the apparatus. Further, the main deployment unit 58 is slidably attached to the base tray 56. The main deployment unit 58 is configured to be switchable between a stored state (see FIG. 4) stored in the base tray 56 and a deployed state (see FIG. 5) slid from the base tray 56 toward the front side in the depth direction of the apparatus of the medium P.

[0048] Further, the first sub-deployment part 61 is slidably attached to the main deployment part 58. The first sub-deployment part 61 is configured to be switchable between a stored state (see FIG. 4) in which it is stored in the main deployment part 58 and a deployed state (see FIG. 6) in which it is slid from the main deployment part 58 to the front side in the depth direction of the apparatus of the medium P. Also, the tip deployment part 62 is slidably attached to the first sub-deployment part 61. The tip deployment part 62 is configured to be switchable between a stored state (see FIG. 4) in which it is stored in the first sub-deployment part 61 and a deployed state (see FIG. 7) in which it is slid from the first sub-deployment part 61 to the front side in the depth direction of the apparatus of the medium P.

[0049] Therefore, as shown in FIG. 1, the medium receiving tray 22 can be changed from a state in which the base tray 56, the main deployment part 58, the first sub-deployment part 61, and the tip deployment part 62 are stored in the lower unit 12 to a state (see FIG. 2) in which the base tray 56, the main deployment part 58, the first sub-deployment part 61, and the tip deployment part 62 are sequentially pulled out in the discharge direction of the medium P and deployed to the front side in the depth direction of the apparatus of the lower unit 12 as shown in FIGS. 4 to 7.

[0050] <<<Regarding the base tray>>> Next, with reference to FIGS. 4 and 8, the base tray 56 will be described. The base tray 56 includes a flat plate-shaped main body part 56a and a pair of side wall parts 56b extending in the depth direction of the apparatus at both ends in the apparatus width direction of the main body part 56a. The upper surface of the main body part 56a is configured as a tray surface for receiving the medium P discharged from the discharge port 28. Also, in the central portion in the apparatus width direction on the lower surface side of the main body part 56a, it is configured as a recess 56c recessed toward the upper surface side. And in the recess 56c, a first protruding part 66 protruding toward the main deployment part 58 side in a state where the main deployment part 58 is attached is provided on the lower side in the apparatus height direction.

[0051] The first protrusion 66 includes, as an example, a plurality of first ribs 68 extending in the depth direction of the apparatus. The plurality of first ribs 68 are formed in the recess 56c at appropriate intervals in the width direction of the apparatus. In FIG. 8, the first rib 68 includes four ribs 68a, 68b, 68c, and 68d. In the width direction of the apparatus, the first rib 68a and the first rib 68b are provided with an interval L1, the first rib 68b and the first rib 68c are provided with an interval L2, and the first rib 68c and the first rib 68d are provided with an interval L1. Here, the interval L2 is set to be larger than the interval L1. Also, the first rib 68a and the first rib 68d are set to an interval L3.

[0052] And, the arrangement interval L2 (see FIG. 8) in the width direction of the apparatus between the first rib 68b and the first rib 68c provided in the recess 56c is set to be smaller than the size of the medium P having the smallest width size in the width direction of the medium P that can be discharged by the discharge roller pair 20. Here, the medium P having the smallest width size in the width direction of the apparatus includes, as an example, media such as business cards and cards. And, the arrangement interval L2 is set to be smaller than the short side of the card-shaped medium, as an example. Also, the arrangement interval L3 (see FIG. 8) in the width direction of the apparatus between the first rib 68a and the first rib 68d is set to be smaller than the long side of the card-shaped medium.

[0053] In addition, as an example, when the scanner 10 conveys the medium P with the short side of the card-shaped medium P aligned in the width direction of the apparatus and discharges it to the medium receiving tray 22, the arrangement interval L2 becomes the maximum arrangement interval in the first rib 68, and when the medium P is conveyed with the long side of the card-shaped medium aligned in the width direction of the apparatus and discharged to the medium receiving tray 22, the arrangement interval L3 is set to be the maximum arrangement interval in the first rib 68.

[0054] Further, on the inner surface of the side wall portion 56b in the device width direction, a plurality of convex portions 56d protruding inward are provided, and on the outer surface in the device width direction, a groove portion 56e extending along the device depth direction is formed. The groove portion 56e engages with a guide portion (not shown) provided in the lower unit 12. Thereby, the base tray 56 can be slidably moved with respect to the lower unit 12.

[0055] <<<Regarding the main deployment section>>> Next, with reference to FIGS. 4 and 9, the main deployment section 58 will be described. In the main deployment section 58, a plurality of ribs 58a extending along the device depth direction are provided at appropriate intervals in the device width direction on the upper surface side. And the rib 58a is configured to support at least a part of the medium P discharged from the discharge port 28 from below in the device height direction. Further, groove portions 58b extending in the device depth direction are formed at both ends in the device width direction in the main deployment section 58.

[0056] When the main deployment section 58 is attached to the base tray 56, the convex portion 56d of the base tray 56 is received in the groove portion 58b. And since the convex portion 56d can move relative to the groove portion 58b in the device depth direction, the main deployment section 58 can be slid relative to the base tray 56. Also, in a state where the main deployment section 58 is attached to the base tray 56, the base tray 56 covers at least a part of the main deployment section 58 from above.

[0057] Further, in the central portion in the device width direction of the main deployment section 58, a concave portion 58c recessed downward is formed. In a state where the main deployment section 58 is attached to the base tray 56, the concave portion 56c of the base tray 56 and the concave portion 58c of the main deployment section 58 are provided at corresponding positions in the device width direction. And a rectangular space is formed by the combination of the concave portion 56c and the concave portion 58c. This space functions as a storage space 70 (see FIG. 14) for storing the first sub-deployment section 61 and the tip deployment section 62 attached to the main deployment section 58.

[0058] Further, at the end on the back side in the depth direction of the apparatus of the main deployment part 58, at the central part in the width direction of the apparatus, that is, at the position facing the storage space 70, a second protruding part 72 is provided. The second protruding part 72 includes a plurality of second ribs 74 extending along the width direction of the apparatus. The second ribs 74 protrude upward in the height direction of the apparatus, that is, toward the base tray 56 side. As an example, the plurality of second ribs 74 are arranged in a row in the order of ribs 74a, 74b, 74c along the width direction of the apparatus at appropriate intervals in the width direction of the apparatus.

[0059] Gaps 76 are respectively provided between the second rib 74a and the second rib 74b, and between the second rib 74b and the second rib 74c. In the width direction of the apparatus, the gap 76 is set to a size such that when the main deployment part 58 is slid in the depth direction of the apparatus with respect to the base tray 56, the first ribs 68b, 68c can pass through the gap 76. Also, the lengths of the second ribs 74a, 74c in the width direction of the apparatus are set shorter than the arrangement interval L1 between the first rib 68a and the first rib 68b and the arrangement interval L1 between the first rib 68c and the first rib 68d. Further, the length of the second rib 74b in the width direction of the apparatus is set shorter than the arrangement interval L2 between the first rib 68b and the first rib 68c.

[0060] Here, referring to FIG. 14, in the state where the main deployment part 58 is attached to the base tray 56, the first rib 68 protrudes from the base tray 56 toward the main deployment part 58 side, and the second rib 74 protrudes from the main deployment part 58 toward the base tray 56 side. That is, the first rib 68 and the second rib 74 have an overlapping portion in the thickness direction of the medium receiving tray 22. Note that the first rib 68 and the second rib 74 overlap within the range of the region W in the height direction of the apparatus. Also, FIG. 14 schematically shows the medium receiving tray 22.

[0061] <<<Regulation of entry of medium into storage space>>> Furthermore, with reference to FIGS. 10 to 16, the relationship between the first rib 68 and the second rib 74 will be described. In FIGS. 11, 13, and 15, illustration of the sub-deployment portion 60 is omitted. Referring to FIGS. 10 and 11, the main deployment portion 58 is in a state of being housed in the base tray 56. As shown in FIG. 11, the first ribs 68b and 68c enter the gaps 76 between the second rib 74a and the second rib 74b and between the second rib 74b and the second rib 74c, respectively.

[0062] And the lengths of the second ribs 74a and 74c in the device width direction are set shorter than the arrangement intervals L1 between the first rib 68a and the first rib 68b and the arrangement interval L1 between the first rib 68c and the first rib 68d, and the length of the second rib 74b in the device width direction is set shorter than the arrangement interval L2 between the first rib 68b and the first rib 68c. Therefore, even if the main deployment portion 58 is slid in the device depth direction with respect to the base tray 56, the first rib 68 and the second rib 74 do not interfere with each other (see FIGS. 11, 13, and 16). Further, even if the first rib 68 and the second rib 74 relatively move in the first rib 68 and the second rib 74, the overlapping portion in the thickness direction of the medium receiving tray 22 is maintained.

[0063] Here, as shown in FIGS. 4, 10, and 11, when the medium P is discharged from the discharge port 28 and bounced back to the base tray 56 side by the stopper portion 64 in a state where the main deployment portion 58 is housed in the base tray 56 and the first sub-deployment portion 61 and the tip deployment portion 62 are also housed in the main deployment portion 58, there is a possibility that the medium P may enter the storage space 70 or further inside the storage space 70. However, since the first rib 68 and the second rib 74 are provided in the storage space 70, it is possible to suppress the entry of the bounced-back medium P into the storage space 70 or further inside the storage space 70.

[0064] Next, referring to FIGS. 12 to 14, in a state where the main deployment portion 58 is slid to the front side in the depth direction of the apparatus with respect to the base tray 56 and is in a semi-deployed state, the second ribs 74a, 74b, 74c are located on the front side in the depth direction of the apparatus than the first ribs 68b, 68c in the depth direction of the apparatus. In this state, the first sub-deployment portion 61 and the tip deployment portion 62 are in a deployed state pulled out to the front side in the depth direction of the apparatus from the storage space 70.

[0065] Here, when the medium P is discharged from the discharge port 28 and bounced back to the base tray 56 side by the stopper portion 64, the medium P may be in a state inclined in the depth direction of the apparatus. In the semi-deployed state of the main deployment portion 58, even when the medium P bounced back to the base tray 56 side by the stopper portion 64 is in a state inclined in the depth direction of the apparatus, at least one of the first rib 68a and the first rib 68d contacts at least a part of the inclined medium P, and the entry of the medium P into the storage space 70 can be suppressed.

[0066] Further, since the first rib 68 and the second rib 74 have an overlapping portion in the thickness direction of the medium receiving tray 22, even if the medium P enters between the first rib 68a and the first rib 68d in the width direction of the apparatus, in the depth direction of the apparatus, the second rib 74 restricts the entry of the medium P into the storage space 70 of the medium P or further to the back side of the storage space 70. Thereby, even when the main deployment portion 58 is in a semi-deployed state with respect to the base tray 56, the entry of the medium P into the storage space 70 can be restricted by the first protrusion 66 (first rib 68) and the second protrusion 72 (second rib 74).

[0067] Next, referring to FIGS. 15 and 16, in a state where the main deployment portion 58 is further slid to the front side in the depth direction of the apparatus with respect to the base tray 56 and is in a fully deployed state, the second ribs 74a, 74b, 74c are located on the front side than the state shown in FIG. 13 in the depth direction of the apparatus.

[0068] Even when the main deployment part 58 is in the fully deployed state, when the medium P is discharged from the discharge port 28 and bounced back toward the base tray 56 by the stopper part 64, at least one of the first rib 68a and the first rib 68d contacts at least a part of the medium P to suppress the entry of the medium P into the storage space 70.

[0069] And since the second ribs 74a, 74b, 74c are located further on the front side in the depth direction of the apparatus, even if the medium P enters between the first rib 68a and the first rib 68d in the width direction of the apparatus, the second rib 74 more surely restricts the entry of the medium P into the storage space 70 of the medium P or further to the back side of the storage space 70 in the depth direction of the apparatus.

[0070] Here, since the first rib 68 and the second rib 74 have a portion overlapping in the thickness direction of the medium receiving tray 22 and the first rib 68 and the second rib 74 can move relative to each other without interfering with each other in the depth direction of the apparatus, the overlap between the first rib 68 and the second rib 74 is maintained regardless of the deployment position of the base tray 56 of the main deployment part 58. Thereby, the entry of the medium P into the storage space 70 of the medium P or further to the back side of the storage space 70 can be restricted in either the half-deployed state or the fully-deployed state of the main deployment part 58.

[0071] <<<Regarding the stopper part>>> Next, with reference to FIGS. 17 to 19, the stopper part 64 will be described. The stopper part 64 includes a slider 80 and a stopper 78. The slider 80 is configured to be slidable along the depth direction of the apparatus with respect to the medium receiving surface 62a of the tip deployment part 62.

[0072] The stopper part 64 is attached to the tip deployment part 62. Referring to FIGS. 17 and 18, the stopper 78 is rotatably attached to the slider 80. As an example, the stopper 78 can switch between a storage posture in which it is in a posture along the medium receiving surface 62a as shown in FIG. 17 and a regulation posture in which it forms a surface intersecting the medium receiving surface 62a to regulate the protrusion of the medium P.

[0073] <<<Regarding the modification example of the stopper part>>> Referring to FIGS. 20 and 21, a modification example of the stopper part 64 will be described. A plurality of recesses 82 are formed at appropriate intervals along the depth direction of the apparatus on the medium receiving surface 62a. The stopper 78 is rotatably attached to the slider 80 with the rotation axis 84 as a fulcrum. And on the opposite sides of the stopper 78 sandwiching the rotation axis 84, a convex portion 86 that can engage with any one of the plurality of recesses 82 is formed.

[0074] As shown in FIG. 21, when the stopper 78 switches from the storage posture (see FIG. 17) to the restricted posture, the convex portion 86 engages with at least one of the plurality of recesses 82. Thereby, the slider 80 cannot slide with respect to the medium receiving surface 62a and enters a locked state. Therefore, even if the medium P discharged from the discharge port 28 hits the stopper 78 with great force, the stopper part 64 is locked with respect to the tip deployment part 62, so that displacement of the stopper part 64 can be suppressed and the medium can be received and surely received by the medium receiving surface 62a.

[0075] On the other hand, when the stopper 78 taking the restricted posture is rotated toward the medium receiving surface 62a side with the rotation axis 84 as a fulcrum, the convex portion 86 rotates in a direction away from the medium receiving surface 62a, and the meshing state with the recess 82 is released. As a result, the locked state of the slider 80 is released, and it becomes possible to slide in the depth direction of the apparatus with respect to the medium receiving surface 62a.

[0076] <<<Modification example of the first embodiment>>> The first protruding portion 66 includes a plurality of first ribs 68 extending in the depth direction of the apparatus, and the second protruding portion 72 includes a plurality of second ribs 74 extending in the width direction of the apparatus. Instead of this configuration, the first protruding portion 66 may have a configuration including a plurality of second ribs 74, and the second protruding portion 72 may have a configuration including a plurality of first ribs 68.

[0077] ■■■Second embodiment■■■■ Referring to FIG. 22, a second embodiment of the medium discharge device 88 will be described. Note that FIG. 22 schematically illustrates the medium discharge device 88 of the second embodiment. The medium discharge device 88 of the second embodiment is different from the first embodiment in that the storage posture and the restricting posture of the stopper 90a of the stopper portion 90 are switched according to the length of the discharged medium P in the discharge direction. In FIG. 22, the medium receiving tray 92 is illustrated with two tray members for simplifying the configuration, but it may be configured with two or more tray members, and may have a configuration including a base tray 56, a main deployment portion 58, a first sub-deployment portion 61, and a tip deployment portion 62 as in the first embodiment.

[0078] As shown in FIG. 22, the medium discharge device 88 includes a medium receiving tray 92 and a switching means 94 for switching the posture of the stopper 90a of the stopper portion 90.

[0079] The medium receiving tray 92 is composed of, for example, a tray member 92a and a tray member 92b. The tray member 92a is configured to be slidable with respect to the lower unit 12, and can be switched between a storage state and a deployed state. The tray member 92b is configured to be slidable with respect to the tray member 92a, and can be switched between a storage state and a deployed state. A stopper portion 90 is attached to the tip side in the depth direction of the device of the tray member 92b.

[0080] The switching means 94 includes, for example, a drive motor 96 provided in the lower unit 12, a drive pulley 98, a transmission pulley 100, a driven pulley 102, and drive belts 104 and 106. The drive pulley 98 is attached to the drive shaft of the drive motor 96 and is rotationally driven by the drive motor 96. The drive belt 104 is wound around the drive pulley 98 and the transmission pulley 100. The driven pulley 102 is attached to the rotation shaft of the stopper 90a. The drive belt 106 is wound around the transmission pulley 100 and the driven pulley 102.

[0081] By rotating the drive motor 96 in the forward or reverse direction, the rotational driving force of the drive motor 96 can be transmitted to the driven pulley 102 via the drive pulley 98, the drive belt 104, the transmission pulley 100, and the drive belt 106, and the stopper 90a can be switched from the restricted position to the stored position, or from the stored position to the restricted position. The two-dot chain line portion in Fig. 22 shows the stored state of the stopper 90a. In Fig. 22, as an example, the stopper 90a is configured to be tilted downstream in the discharge direction of the medium P, but it may be configured to be tilted upstream in the discharge direction.

[0082] Based on the size information of the medium P to be discharged, when the medium P is discharged onto the medium receiving tray 92, the control unit 54 drives the drive motor 96 when the leading end of the medium P to be discharged exceeds the position of the stopper 90a of the stopper portion 90, and switches the stopper 90a from the restricted position to the stored position. Thereby, it is possible to avoid the stopper portion 90 from preventing the discharge of the medium P when the medium P is long in the discharge direction. The size information of the medium P to be discharged may be obtained not only from the driver information input to the control unit 54 but also from the detection signal of the medium P by a medium detection sensor (not shown) provided in the scanner 10.

[0083] ■■■Third Embodiment■■■■ Next, with reference to Figs. 23 and 24, a third embodiment of the medium discharge device 108 will be described. Figs. 23 and 24 schematically illustrate the medium discharge device 108 of the third embodiment. The medium discharge device 108 of the third embodiment is different from the first embodiment in that it includes a locking mechanism for locking the medium receiving tray 110 in the stored state with respect to the scanner 10.

[0084] The stopper portion 112 includes a stopper 114, a slider 116, a lock pin 118 as "locking means", and a biasing means 120. The stopper 114 is attached to the slider 116 so as to be rotatable about a rotation axis 122, and can switch between a restricting posture and a storage posture. Further, the stopper 114 is provided with an engaging portion 124 that can engage with the lock pin 118. The biasing means 120 is configured as a tension spring as an example, with one end connected to the slider 116 and the other end connected to the lock pin 118. And the biasing means 120 biases the lock pin 118 toward the slider 116 side.

[0085] Further, the lower unit 12 as the "housing" is provided with a hole portion 12a capable of receiving the lock pin 118.

[0086] Referring to FIG. 22, the base tray 56 is stored in the lower unit 12 with the main deployment portion 58 and the sub-deployment portion 60 respectively stored. In this state, when the stopper 114 of the stopper portion 112 is in the storage state, the engaging portion 124 presses the lock pin 118 toward the lower unit 12 against the biasing force of the biasing means 120. And the lock pin 118 enters into the hole portion 12a of the lower unit 12 through the base tray 56, the main deployment portion 58, and the sub-deployment portion 60. In this state, the base tray 56, the main deployment portion 58, and the sub-deployment portion 60 are locked to the lower unit 12 via the lock pin 118. Therefore, it is possible to prevent the media receiving tray 110 from accidentally popping out from the scanner 10.

[0087] Next, referring to FIG. 23, the stopper 114 in the stored state is rotated with respect to the slider 116 to switch to the restricted posture. By this rotation, the engaging portion 124 also rotates clockwise in FIG. 23 about the rotation axis 122 as a fulcrum. Then, the lock pin 118 is displaced in the direction of coming out of the hole portion 12a by the biasing force of the biasing means 120. As a result, the locked state of the base tray 56, the main deployment portion 58, and the sub-deployment portion 60 with respect to the lower unit 12 is released, and it becomes possible to pull out the media receiving tray 110 from the scanner 10.

[0088] Summarizing the above description, the media discharge devices 18, 88, 108 include a pair of discharge rollers 20 that discharge the media P, and a media receiving tray 22, 92, 110 that can switch between a deployed state and a stored state and receives the media P discharged by the pair of discharge rollers 20. The media receiving trays 22, 92, 110 include a base tray 56, a main deployment portion 58 that can be stored and deployed and is located on the front side in the depth direction of the apparatus, which is on the media discharge direction side of the base tray 56 in the deployed state, and at least one sub-deployment portion 60 that can be stored and deployed and is located on the front side in the depth direction of the apparatus, which is on the media discharge direction side of the main deployment portion 58 in the deployed state. The base tray 56 is formed with a storage space 70 for storing at least one sub-deployment portion 60, and is provided with a first protruding portion 66 that protrudes toward the storage space 70.

[0089] According to the above configuration, the media receiving trays 22, 92, 110 that can switch between the deployed state and the stored state include the base tray 56, the main deployment portion 58, and the sub-deployment portion 60. Since the base tray 56 is formed with a storage space 70 for storing at least one sub-deployment portion 60, when the sub-deployment portion 60 is deployed, the discharged media P may enter the storage space 70 or further into the back side of the storage space 70. However, in this configuration, the base tray 56 is provided with a first protruding portion 66 that protrudes toward the storage space 70 in the storage space 70. Therefore, the first protruding portion 66 restricts the entry of the media into the storage space 70 or further into the back side of the storage space 70.

[0090] At a position facing the storage space 70 in the main deployment part 58, a second protruding part 72 is provided which protrudes into the storage space 70 and has a part overlapping with the first protruding part 66 in the thickness direction of the medium receiving tray 22, and the overlap between the first protruding part 66 and the second protruding part 72 is maintained regardless of the deployment position of the main deployment part 58. According to this configuration, not only in the state where the main deployment part 58 is fully deployed, but also in the semi-deployed state, the entry of the medium P into the storage space 70 or further into the back side of the storage space 70 can be restricted. As described above, it is possible to provide the medium discharge devices 18, 88, 108 that can more reliably avoid the entry of the medium P into the storage space 70 or further into the back side of the storage space 70.

[0091] Either one of the first protruding part 66 and the second protruding part 72 is constituted by a first rib 68 extending in the apparatus depth direction which is the medium discharge direction, and the other of the first protruding part 66 and the second protruding part 72 is constituted by a second rib 74 extending in the apparatus width direction which is a direction intersecting the medium discharge direction. According to this configuration, it is possible to more reliably suppress the entry of the medium P into the storage space 70 or further into the back side of the storage space 70.

[0092] A plurality of first ribs 68 are provided at appropriate intervals in the apparatus width direction which is a direction intersecting the medium discharge direction, and the maximum arrangement interval L2 or L3 among the plurality of first ribs 68 is smaller than the size of the medium having the smallest size in the medium width direction which is a direction intersecting the medium discharge direction among the media P that can be discharged by the discharge roller pair 20. According to this configuration, regardless of the size of the medium P, the entry of the medium P into the storage space 70 or further into the back side of the storage space 70 can be well restricted.

[0093] The sub-deployment part 60 includes a tip deployment part 62 that is located at the front side in the media discharge direction, i.e., the depth direction of the device, in the deployed state, and a stopper part 64, 90, 112 that is slidable with respect to the tip deployment part 62 and can switch between a regulation posture in which a surface that intersects the media receiving surface 62a is formed to regulate the protrusion of the media P and a storage posture in which the surface is along the media receiving surface 62a. According to this configuration, the stoppers 80, 90a, 114 can suppress the protrusion of the media P from the media receiving trays 22, 92, 110 when the media P is discharged.

[0094] A plurality of recesses 82 are formed in the tip deployment part 62 along the sliding direction of the stopper part 64, and a convex part 86 that enters the recesses 82 when the stopper part 64 is switched from the storage posture to the regulation posture is formed in the stopper part 64. According to this configuration, the engagement between the recesses 82 and the convex part 86 can securely hold the stopper part 64 at a desired position. In particular, it is possible to suppress the displacement of the stopper part 64 caused by the discharged media P pushing the stopper part 64.

[0095] It includes a switching means 94 for switching the posture of the stopper part 90 and a control part 54 for controlling the switching means 94. The control part 54, based on the size information of the media P to be discharged, when the tip of the media P to be discharged exceeds the position of the stopper part 90 when being discharged onto the media receiving tray 92, tilts the stopper 90a of the stopper part 90 from the regulation posture to the upstream or downstream side in the media discharge direction. According to this configuration, when discharging a long media P, the problem that the stopper part 90 obstructs the discharge of the long media can be avoided.

[0096] The base tray 56 can be stored and deployed with respect to the lower unit 12 that constitutes the housing of the media discharge device 108. By switching the stopper portion 112 from the restricted posture to the storage posture, the base tray 56, the main deployment portion 58, and the sub-deployment portion 60 are locked in the stored state. By switching the stopper portion 112 from the storage posture to the restricted posture, a lock pin 118 that releases the lock is provided. According to this configuration, for example, when carrying the scanner 10, it is possible to avoid the problem that the media receiving tray 110 is inadvertently deployed. In addition, since the operation of the lock pin 118 is borne by the stopper portion 112, it is not necessary to provide a dedicated operation member, and an increase in the cost of the device can be suppressed.

[0097] The scanner 10 includes an image reading unit 36 that reads the surface of the medium P, and a medium discharge device 18, 88, 108 provided downstream of the image reading unit 36 in the medium conveyance direction.

Explanation of Signs

[0098] 10… Scanner, 12… Lower unit, 12a… Hole portion, 14… Upper unit, 16… Cover portion, 16a… Media placement surface, 18, 88, 108… Media discharge device, 20… Discharge roller pair, 22, 92, 110… Media receiving tray, 24… Media feeding path, 26… Feeding port, 28… Discharge port, 30… Feeding roller, 32… Separation roller, 34… Conveyor roller pair, 34a… Conveyor drive roller, 34b… Conveyor driven roller, 36… Image reading unit, 38… Torque limiter, 40… Upper reading unit, 42… Lower reading unit, 44… Discharge drive roller, 46… Discharge driven roller, 48… Drive shaft, 50… Auxiliary roller, 52, 76… Gap, 54… Control unit, 56… Base tray, 56a… Main body portion, 56b… Side wall portion, 56c, 82… Recess, 56d, 86… Protrusion, 56e… Groove portion, 58… Main deployment portion, 58a… Rib, 58b… Groove portion, 58c… Recess, 60… Sub-deployment portion, 61, First sub-deployment portion, 62… Tip deployment portion, 62a… Media receiving surface, 64, 90, 112… Stopper portion, 66… First protrusion, 68, 68a, 68b, 68c, 68d… First rib, 70… Storage space, 72… Second protrusion, 74, 74a, 74b, 74c… Second rib, 80, 116… Slider, 78, 90a, 114… Stopper, 84, 122… Rotation axis, 92a, 92b… Tray member, 94… Switching means, 96… Drive motor, 98… Drive pulley, 100… Transmission pulley, 102… Driven pulley, 104, 106… Drive belt, 118… Lock pin, 120… Biasing means, 124… Engagement portion, L1… Arrangement interval, L2… Maximum arrangement interval, P… Media, W… Overlapping region

Claims

1. Reading means for reading the surface of a medium, Discharging means for discharging the medium read by the reading means, A medium receiving tray for receiving the medium discharged by the discharging means, comprising: The medium receiving tray, A base tray, A tray that can be stored and deployed by sliding along the medium discharge direction, having a main deployment portion located on the medium discharge direction side of the base tray in the deployed state, A tray that can be stored and deployed with respect to the main deployment portion by sliding along the medium discharge direction, having a sub-deployment portion located on the medium discharge direction side of the main deployment portion in the deployed state, The base tray covers at least a part of the main deployment portion from above, A storage recess for storing the sub-deployment portion is formed on the upper surface of the main deployment portion, The base tray is provided with a first protruding portion that extends in the medium discharge direction and protrudes toward the main deployment portion, The main deployment portion is provided with a second protruding portion that extends in the width direction, which is a direction intersecting the medium discharge direction, and protrudes toward the base tray, The sub-deployment portion is a stopper portion including a stopper that can switch between a regulating posture that forms a surface intersecting the medium receiving surface to regulate the protrusion of the medium and a storage posture that is along the medium receiving surface, and the stopper portion slidable with respect to the medium receiving surface, Engaging means for engaging the medium receiving surface and the stopper, Comprising: The engaging means, A recess extending in a direction intersecting the sliding direction of the stopper portion on the medium receiving surface, and a plurality of the recesses formed along the sliding direction, A convex portion formed on the stopper, and the convex portion engageable with the recess, An image reading apparatus characterized by the above.

2. The image reading apparatus according to claim 1, The stopper is rotatable about a rotation axis as a fulcrum, and by rotating, switches between an engaged state of engaging with the recess and a non-engaged state of being separated from the recess, An image reading apparatus characterized by the above.

3. The image reading apparatus according to claim 1, The stopper is rotatable about a rotation axis as a fulcrum, and by rotating, switches between the regulating posture and the storage posture, An image reading apparatus characterized by the above.

Images