Media loading device and post-processing device

Abstract

To provide a medium loading device and a post-processing device capable of reducing a load for movement of a medium bundle and suppressing a configuration of a medium loading device from becoming complicated.SOLUTION: In a post-processing device, a loading unit 34 comprises a processing tray 42, an aligning part 60, a conveying part 44, and a moving part 58. The processing tray 42 has a placement area S where a sheet P is placed. The aligning part 60 aligns a tip end portion PF of the sheet P. The conveying part 44 conveys the sheet P to the aligning part 60. The moving unit 58 moves the paper P in an X direction. The aligning part 60 has a first aligning surface 65 having a first friction coefficient μ1 and a second aligning surface 67 having a second friction coefficient μ2 lower than the first friction coefficient μ1. The second aligning surface 67 is located on the upstream side of the first aligning surface 65 in a +A direction and on the center side of the placement area S with respect to the first aligning surface 65 in the X direction.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to a medium loading device and a post-processing device.

Background Art

[0002] In the sheet-like medium alignment device of Patent Document 1, when the serrated uneven portions provided on the surface of the block of the end fence come into contact with the paper, the end of the paper enters the valley formed between the end fence and the paper bundle, which is suppressed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a configuration having uneven portions in the stacking direction of the medium as in the configuration of Patent Document 1, when the paper bundle is moved in the width direction intersecting the conveyance direction of the medium, the ends of the medium always come into contact with the uneven portions. Therefore, compared with a configuration without uneven portions, there is a risk that the load of moving the paper bundle increases. Further, when the block having the uneven portions is retracted in a direction away from the paper bundle, a separate mechanism for retracting the block is required, and there is a risk that the configuration of the medium loading device becomes complicated.

Means for Solving the Problems

[0005] In order to solve the above problems, the media loading device according to the present invention includes a loading unit having a loading area on which a recorded media is placed, an aligning unit that aligns a leading end portion downstream in the conveyance direction of the media conveyed to the loading unit, a conveyance unit that conveys the media conveyed to the loading unit toward the aligning unit, and a moving unit that moves a plurality of the media loaded on the loading unit in a width direction intersecting the conveyance direction. The aligning unit has a first aligning surface having a first friction coefficient in contact with the media, and a second aligning surface having a second friction coefficient lower than the first friction coefficient in contact with the media. The second aligning surface is upstream of the first aligning surface in the conveyance direction and is located on the center side in the width direction of the loading area with respect to the first aligning surface.

[0006] In order to solve the above problems, the post-processing device according to the present invention includes the media loading device according to any one of the first aspect to the ninth aspect, and a processing unit that performs processing on a plurality of the media placed on the loading unit.

Brief Description of the Drawings

[0007]

Figure 1

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MODE FOR CARRYING OUT THE INVENTION

[0008] Hereinafter, the present invention will be schematically described. The media loading device according to the first aspect includes a placement unit having a placement area on which a recorded media is placed, an alignment unit that aligns the leading end portion downstream in the conveyance direction of the media conveyed to the placement unit, a conveyance unit that conveys the media conveyed to the placement unit toward the alignment unit, and a moving unit that moves a plurality of the media stacked on the placement unit in a width direction intersecting the conveyance direction. The alignment unit has a first alignment surface having a first friction coefficient in contact with the media and a second alignment surface having a second friction coefficient lower than the first friction coefficient in contact with the media. The second alignment surface is upstream of the first alignment surface in the conveyance direction and is located closer to the center in the width direction of the placement area than the first alignment surface.

[0009] With one or more of the media placed on the placement unit, the media conveyed onto the media on the placement unit is referred to as an upper media. Also, assume that the upper media is conveyed onto the media on the placement unit in a deflected state. According to this aspect, the upper media is conveyed toward the alignment unit by the conveyance unit. At this time, the upper media may be conveyed in a state inclined in a direction intersecting the conveyance direction and the width direction, that is, in a skewed state. In the skewed state, when a part of the leading end portion of the upper media comes into contact with the first alignment surface, a part of the leading end portion tends to move toward the placement unit. Here, since the first friction coefficient is higher than the second friction coefficient, a large frictional force acts on a part of the leading end portion in the direction opposite to the moving direction. Therefore, it is possible to prevent a part of the leading end portion from entering between the leading end portion downstream of the already loaded media and the alignment unit.

[0010] Subsequently, as the conveyance of the upper media continues, a part of the leading end portion is deflected, and another part of the leading end portion reaches a position substantially the same as the position of a part of the leading end portion in the conveyance direction. At this time, by releasing the pressing force acting on the upper media from the conveyance unit, the skewed state of the upper media is corrected. Also, at this time, another part of the leading end portion comes into contact with the second alignment surface. Here, since the second alignment surface is located upstream of the first alignment surface in the conveying direction, as the diagonal state of the tip of the upper medium is corrected, the tip separates from the first alignment surface and contacts the second alignment surface. That is, a part of the tips of the plurality of media including the upper medium loaded on the placement portion contacts the second alignment surface.

[0011] The plurality of media including the upper medium are moved in the width direction by the moving portion. Here, since the second friction coefficient is lower than the first friction coefficient, the frictional force acting in the direction opposite to the moving direction on the tips of the plurality of media becomes smaller. Thereby, when moving the plurality of media in the width direction, the load acting on the plurality of media can be reduced. Furthermore, according to this aspect, since it is not necessary to move the first alignment surface and the second alignment surface, the configuration of the media loading device becomes a simple configuration.

[0012] The media loading device according to the second aspect, in the first aspect, the alignment portion includes a third alignment surface located on the center side in the width direction with respect to the second alignment surface, and the third friction coefficient of the third alignment surface in contact with the media is higher than the second friction coefficient, and the third alignment surface is provided on the downstream side of the second alignment surface in the conveying direction. According to this aspect, when the conveyance of the media in the conveying direction proceeds even after the tip contacts the second alignment surface, the portion on the center side in the width direction of the media contacts the third alignment surface. Here, when the tip of the media tries to move toward the placement portion, since the third friction coefficient is higher than the second friction coefficient, a relatively large frictional force acts on the center portion in the width direction of the media. Thereby, it is possible to suppress the tip of the media in the conveying direction from entering the gap between the tip of the already loaded media in the conveying direction and the third alignment surface. Furthermore, since the third alignment surface is provided downstream of the second alignment surface in the conveyance direction, the chance of contact between the third alignment surface and the medium is reduced compared to the chance of contact between the second alignment surface and the medium. Therefore, when a plurality of the media are moved in the width direction, the load acting on the moving part can be reduced.

[0013] The medium loading device according to the third aspect is characterized in that, in the second aspect, the first alignment surface is provided upstream of the third alignment surface in the conveyance direction. When the medium is in an obliquely traveling state inclined with respect to the conveyance direction, among the corners of the medium, the corner at the leading end on the leading side in the conveyance direction is located downstream of the central portion at the leading end of the medium in the conveyance direction. In other words, the corner at the leading end on the leading side of the obliquely traveling medium is located ahead in the conveyance direction compared to the central portion. Here, according to the present aspect, since the first alignment surface is provided upstream of the third alignment surface in the conveyance direction, the corner ahead of the central portion of the medium can come into contact with the first alignment surface having a high coefficient of friction at an early stage. Therefore, it is possible to suppress the medium from entering the gap between the leading end portion of the already loaded medium in the conveyance direction and the first alignment surface. Note that after the skew of the medium is eliminated by the leading end portion of the medium coming into contact with the first alignment surface, when a plurality of the media are moved in the width direction, the plurality of the media come into contact with the second alignment surface having a low coefficient of friction. Therefore, the load acting on the moving part can be reduced.

[0014] The medium loading device according to the fourth aspect is characterized in that, in the second aspect, the third alignment surface is provided upstream of the first alignment surface in the conveyance direction. When the medium being conveyed toward the alignment part is not skewed or the amount of skew is small, the medium after the leading end portion in the conveyance direction comes into contact with the second alignment surface may be in a conveyance state where the central portion in the width direction precedes the corner portion downstream in the conveyance direction. Here, according to this aspect, since the third alignment surface is provided upstream of the first alignment surface in the conveying direction, the central portion of the medium that precedes the corner portion of the medium can come into contact with the third alignment surface having a high friction coefficient at an earlier stage. Therefore, it is possible to suppress the medium from entering the gap between the tip portion of the already loaded medium in the conveying direction and the third alignment surface. In addition, after the skew of the medium is eliminated by the tip portion of the medium coming into contact with the third alignment surface, when a plurality of the media are moved in the width direction, the plurality of the media come into contact with the second alignment surface having a low friction coefficient. Therefore, the load acting on the moving portion can be reduced.

[0015] The medium loading device according to the fifth aspect is any one of the first aspect to the fourth aspect, wherein the alignment portion has a plurality of the first alignment surfaces and the second alignment surfaces, respectively, and the plurality of the first alignment surfaces and the second alignment surfaces are arranged on one side and the other side in the width direction with respect to the center in the width direction of the placement region. According to this aspect, when the medium conveyed toward the alignment portion is skewed, in either a skewed state where one side in the width direction of the tip portion of the medium is located downstream of the other side, or a skewed state where the other side in the width direction of the tip portion of the medium is located downstream of one side, the tip portion of the medium can be brought into contact with the first alignment surface and the second alignment surface.

[0016] The medium loading device according to the sixth aspect is any one of the first aspect to the fifth aspect, wherein the first friction coefficient of the first alignment surface is higher than the second friction coefficient of the second alignment surface at least in the loading direction of the medium. According to this aspect, at least in the loading direction, the first friction coefficient of the first alignment surface is higher than the second friction coefficient of the second alignment surface. For this reason, since the downstream tip portion of the medium is suppressed from entering between the downstream tip portion of the medium already loaded on the placement portion and the alignment portion, when the medium is conveyed to the placement portion, it is possible to suppress the alignment of the tip portion of the already loaded medium from being disturbed.

[0017] The media loading device according to the seventh aspect is characterized in that, in any one of the first aspect to the sixth aspect, the alignment portion includes a first friction member having the first alignment surface and a mounting member to which the first friction member is attached. According to this aspect, when the first alignment surface is worn, only the first friction member needs to be replaced. That is, since it is not necessary to replace the entire alignment portion, the amount of members discarded in the replacement of the first alignment surface can be reduced.

[0018] The media loading device according to the eighth aspect is characterized in that, in the seventh aspect, the second alignment surface is formed on a second friction member attached to at least one of the mounting member and the first friction member. According to this aspect, when the second alignment surface is worn, only the second friction member needs to be replaced. That is, since it is not necessary to replace the entire alignment portion, the amount of members discarded in the replacement of the second alignment surface can be reduced.

[0019] The media loading device according to the ninth aspect is characterized in that, in the seventh aspect, the second alignment surface is formed on the mounting member. According to this aspect, the operation of attaching the member on which the second alignment surface is formed to the mounting member becomes unnecessary.

[0020] The post-processing device according to the tenth aspect includes the media loading device according to any one of the first aspect to the ninth aspect and a processing unit that performs processing on the plurality of media placed on the placement unit. According to this aspect, when moving the plurality of media in the width direction, the load acting on the plurality of media can be reduced, so that deformation of the plurality of moved media can be suppressed.

[0021] 〔Embodiment 1〕 Hereinafter, the recording system 1, the post-processing device 30, and the loading unit 34 of Embodiment 1, which is an example of the present invention, will be specifically described. As shown in FIG. 1, the recording system 1 includes, as an example, a printer 10, a scanner unit 12, and a post-processing device 30. The recording system 1 is configured as an inkjet recording system that performs recording by discharging ink Q, which is an example of a liquid, onto a sheet P, which is an example of a medium.

[0022] The X direction is an example of the depth direction of the devices in the recording system 1. The base end side of the arrow indicating the X direction is the -X direction, and the tip end side of the arrow indicating the X direction is the +X direction. Also, the X direction is an example of the width direction of the sheet P. The Y direction is an example of the width direction of the devices in the recording system 1. The tip end side of the arrow indicating the Y direction is the +Y direction, and the base end side of the arrow indicating the Y direction is the -Y direction. The Z direction is an example of the height direction of the devices in the recording system 1 and is a direction orthogonal to both the X direction and the Y direction. The tip end side of the arrow indicating the Z direction is the +Z direction, and the base end side of the arrow indicating the Z direction is the -Z direction. In the following description, the +Z direction may be referred to as upward and the -Z direction as downward. Note that when + and - are not distinguished in each direction, they are simply described as the X direction, the Y direction, and the Z direction.

[0023] The printer 10 is an example of a recording device that performs recording on the sheet P. The printer 10 includes, as an example, a main body 14, a sheet storage unit 16 that stores the sheet P, a sheet conveyance unit (not shown) that conveys the sheet P, a recording unit 18 that performs recording on the sheet P, an in-body discharge unit 22 where the sheet P is discharged, a relay unit 24 that conveys the sheet P to the post-processing device 30, and a control unit (not shown). Inside the main body 14, a conveyance path TA through which the sheet P is conveyed is provided.

[0024] The recording unit 18 is configured as a line head, as an example. The recording unit 18 has a plurality of nozzles (not shown) arranged corresponding to the entire X direction of the sheet P. The recording unit 18 performs recording on the sheet P by discharging the ink Q supplied from an ink tank (not shown) from the plurality of nozzles toward the sheet P. The control unit of the printer 10 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and a storage (not shown). The control unit controls the operations of each part including the conveyance operation of the paper P in the recording system 1, the recording operation in the recording unit 18, and the post-processing operation in the post-processing device 30.

[0025] The post-processing device 30 includes a device main body 32, a discharge tray 33, a loading unit 34 which is an example of a medium loading device, and a stapler 61 which is an example of a processing unit. The device main body 32 receives the paper P conveyed from the printer 10. Inside the device main body 32, a conveyance path TB through which the paper P is conveyed, a loading unit 34, and a stapler 61 are provided.

[0026] As shown in FIG. 2, the loading unit 34 includes a processing tray 42, an alignment unit 60, a conveyance unit 44, and a moving unit 58. Further, the loading unit 34 includes a guide member 35, a pressing member 36, a flap 37, and a discharge roller 38. In the present embodiment, the direction in which the paper P is conveyed in the loading unit 34 is defined as the A direction. The A direction is, as an example, a direction orthogonal to the X direction when viewed from the Z direction and intersects the Y direction when viewed from the X direction. Also, the A direction is a direction inclined such that the position in the +Y direction is located in the -Z direction relative to the position in the -Y direction when viewed from the X direction. The direction orthogonal to the A direction when viewed from the X direction is defined as the B direction. In the following description, regarding the A direction, the direction in which the paper P travels toward the alignment unit 60 is defined as the +A direction, and the direction in which the paper P moves away from the alignment unit 60 is defined as the -A direction. The +A direction is an example of the conveyance direction. Also, regarding the B direction, the loading direction in which the paper P is loaded is defined as the +B direction, and the direction opposite to the +B direction is defined as the -B direction.

[0027] The guide member 35 forms a part of the conveyance path TB and extends toward the processing tray 42. The pressing member 36 is provided so as to be swingable about a shaft portion 36A extending in the X direction. The pressing member 36 presses the central portion PC (FIG. 4) of the sheet P on the processing tray 42 described later toward the processing tray 42.

[0028] The flap 37 is arranged beside the alignment portion 60 and is provided so as to be swingable about a shaft portion 37A extending in the X direction. The flap 37 presses the leading end portion PF of the sheet P on the processing tray 42 toward the processing tray 42. The discharge roller 38 feeds out the stack of sheets PT on the processing tray 42 toward the discharge tray 33 while rotating. The stack of sheets PT is obtained by stapling a plurality of sheets P stacked on the processing tray 42 with a stapler 61.

[0029] As shown in FIG. 3, the processing tray 42 is an example of a placement portion on which the sheet P recorded in the recording unit 18 (FIG. 1) is conveyed. On the processing tray 42, the sheet P is placed and stacked. Specifically, the processing tray 42 is formed in a flat plate shape having a predetermined thickness in the B direction. The width of the processing tray 42 in the X direction is wider than the width of the sheet P in the X direction. The placement surface 43 is the end surface in the +B direction of the processing tray 42 and is the surface on which the sheet P is placed. The placement surface 43 is along the A-X plane.

[0030] A virtual region including the processing tray 42 and the peripheral portion of the processing tray 42, and a region corresponding to the outer periphery of the sheet P having the maximum size that can be placed on the processing tray 42 is defined as a placement region S. That is, the processing tray 42 has the placement region S. In FIG. 3, the placement region S is indicated by an imaginary line. The sheet P is conveyed inside the placement region S on the processing tray 42. Then, the sheet P is placed inside the placement region S. A line extending in the A direction and bisecting the placement region S in the X direction is defined as a center line C.

[0031] As shown in FIG. 2, the conveyance unit 44 conveys the sheet P conveyed to the processing tray 42 toward an alignment unit 60 described later. The conveyance unit 44 includes, as an example, a feed roller 46, a first paddle 48, a first drive unit 52, a second paddle 54, and a second drive unit 56. The feeding roller 46 feeds the sheet P conveyed along the guide member 35 toward the processing tray 42 as it rotates.

[0032] The first paddle 48 is provided at a position facing the upstream portion in the +A direction in the processing tray 42 in the B direction. The first paddle 48 has, for example, a rotating shaft 49 extending in the X direction and three blade portions 51. Two sets of the three blade portions 51 are provided at intervals in the X direction. Further, the three blade portions 51 are made of a rubber material and are formed in a rectangular plate shape having a predetermined thickness in the rotation direction. The first paddle 48 conveys the sheet P toward the alignment unit 60.

[0033] The first drive unit 52 includes a motor and gears (not shown). The operation of the first drive unit 52 is controlled by the aforementioned control unit. Here, when the first drive unit 52 rotates the first paddle 48 and the three blade portions 51 come into contact with the sheet P, the sheet P on the processing tray 42 is conveyed toward the alignment unit 60.

[0034] The second paddle 54 is provided at a position facing the downstream portion in the +A direction in the processing tray 42 in the B direction. The second paddle 54 has, for example, a rotating shaft 55 extending in the X direction and three blade portions 57. Two sets of the three blade portions 57 are provided at intervals in the X direction. Further, the three blade portions 57 are made of a rubber material and are formed in a rectangular plate shape having a predetermined thickness in the rotation direction. The second paddle 54 conveys the sheet P toward the alignment unit 60.

[0035] The second drive unit 56 includes a motor and gears (not shown). The operation of the second drive unit 56 is controlled by the aforementioned control unit. Here, when the second drive unit 56 rotates the second paddle 54 and the three blade portions 57 come into contact with the sheet P, the sheet P on the processing tray 42 is conveyed toward the alignment unit 60.

[0036] The moving unit 58 moves a plurality of sheets P stacked on the processing tray 42 in the X direction intersecting the +A direction. The moving unit 58 is constituted by, for example, a first cursor 59A and a second cursor 59B (Fig. 3). A part of the first cursor 59A and a part of the second cursor 59B are each movable in the X direction along the processing tray 42. Also, the first cursor 59A and the second cursor 59B are automatically movable in the X direction by being driven by a driving unit (not shown), for example. The first cursor 59A and the second cursor 59B align both ends in the X direction of a plurality of sheets P stacked on the processing tray 42. Also, the first cursor 59A and the second cursor 59B displace the sheet P or the sheet bundle PT in the X direction by moving in the +X direction or the -X direction while sandwiching the sheet P or the sheet bundle PT in the X direction.

[0037] The stapler 61 is an example of a processing unit that performs processing on a plurality of sheets P placed on the processing tray 42. The stapler 61 is located in the +A direction with respect to the processing tray 42. A part of the stapler 61 is aligned with the alignment unit 60 described later in the X direction. Specifically, as an example of processing, the stapler 61 performs staple processing for stapling a predetermined number of sheets P. The sheet bundle PT staple-processed by the stapler 61 is discharged to the discharge tray 33. Note that, as other examples of processing on the sheet P, there are punching processing for punching holes in the sheet P, folding processing for folding a bundle of sheets P, cutting processing for cutting the sheet P, folding processing for folding the sheet P, bookbinding processing for binding the sheet P, and the like.

[0038] As shown in Fig. 3, the alignment unit 60 includes, for example, two end alignment units 62 and one center alignment unit 76. The center alignment unit 76 is provided at a position in the +A direction with respect to the processing tray 42 and is located on the center line C. The center position of the center alignment unit 76 is on the center line C. Also, the center alignment unit 76 has a structure that is line-symmetric with respect to the center line C in the +X direction and the -X direction.

[0039] The two end alignment parts 62 are provided at positions in the +A direction with respect to the processing tray 42 and at positions in the +X direction and -X direction with respect to the center alignment part 76, one by one. The two end alignment parts 62 are arranged at positions where both corner parts PE in the X direction of the plurality of sheets P can be aligned. Note that the two end alignment parts 62 are arranged to be line-symmetrical with respect to the center line C. For this reason, in the following description, one of the end alignment parts 62 may be described, and the description of the other end alignment part 62 may be omitted. In the present embodiment, "alignment" means aligning the end in the +A direction of the sheet P in the B direction.

[0040] As shown in FIG. 4, the end alignment part 62 includes, as an example, a first friction member 64, a second friction member 66, and a mounting member 68. The first friction member 64 is formed in a plate shape having a predetermined thickness in the A direction, as an example. The first friction member 64 is made of a cork board, as an example. A first alignment surface 65 is formed at the -A direction end of the first friction member 64. That is, the first friction member 64 has the first alignment surface 65. The first alignment surface 65 is formed in a planar shape along the X-B plane. The first alignment surface 65 has a first friction coefficient μ1 in contact with the sheet P.

[0041] The second friction member 66 is formed in a plate shape having a predetermined thickness in the A direction, as an example. The second friction member 66 is made of a stainless steel plate, as an example. The +A direction thickness of the second friction member 66 is larger than the +A direction thickness of the first friction member 64. A second alignment surface 67 is formed at the -A direction end of the second friction member 66. That is, the second friction member 66 has the second alignment surface 67. The second alignment surface 67 is formed in a planar shape along the X-B plane. In other words, the second alignment surface 67 is formed on the second friction member 66 attached to the mounting member 68. The second alignment surface 67 has a second friction coefficient μ2 in contact with the sheet P. The second friction coefficient μ2 is lower than the first friction coefficient μ1 in contact with the sheet P.

[0042] As shown in FIG. 5, the attachment member 68 has, for example, a configuration in which sheet metal is bent at a plurality of locations. The attachment member 68 includes a fixing portion 69 fixed to the processing tray 42, a lower wall portion 71 extending in the +A direction from the fixing portion 69, a vertical wall portion 72 standing upright in the +B direction from the lower wall portion 71, and an upper wall portion 73 extending in the -A direction from the vertical wall portion 72. The upper surface 71A of the lower wall portion 71 in the +B direction is aligned with the placement surface 43 in the +A direction, and the height in the +B direction is substantially aligned with the height of the placement surface 43. In addition, in FIG. 5, the second paddle 54 (FIG. 2) is not shown.

[0043] The height of the vertical wall portion 72 in the +B direction is higher than the maximum stacking height of the plurality of sheets P stacked on the processing tray 42. The first friction member 64 and the second friction member 66 are attached to the attachment surface 72A of the vertical wall portion 72 in the -A direction in a state arranged in the X direction. For example, double-sided tape is used for attaching the first friction member 64 and the second friction member 66.

[0044] As shown in FIG. 6, the width of the vertical wall portion 72 in the X direction is, for example, narrower than the width of the lower wall portion 71 in the X direction. Further, cutouts 75 are formed at both ends in the X direction at the +A direction end of the lower wall portion 71. In addition, in FIG. 6, the end alignment portion 62 in the -X direction is shown. Also, cutouts 75 are formed in the upper wall portion 73.

[0045] The first friction member 64 has an H-shaped outer shape when viewed from the A direction. The first friction member 64 includes, for example, a base portion 64A attached to the vertical wall portion 72, an extension portion 64B extended from the base portion 64A, and a recessed portion 64C. The base portion 64A is formed in a rectangular shape whose dimension in the B direction is longer than the dimension in the X direction. The extension portion 64B is a plate-like portion extended from the base portion 64A in the +B direction and the -B direction, respectively, at the -X direction end of the base portion 64A. The extension portion 64B is inserted into the cutout 75.

[0046] The recessed portion 64C is formed at a portion where both end faces in the B direction of the base portion 64A and the side face in the +X direction of the extension portion 64B are connected in the first friction member 64. The recessed portion 64C is formed in a semi-circular shape when viewed from the A direction. The recessed portion 64C functions as a relief portion when attaching the first friction member 64 to the vertical wall portion 72. That is, the formation of the recessed portion 64C facilitates the attachment of the first friction member 64 to the vertical wall portion 72.

[0047] When the first friction member 64 is attached to the vertical wall portion 72, there may be a gap between the end face in the -B direction of the base portion 64A in the +X direction with respect to the recessed portion 64C and the upper surface 71A. Here, as a comparative example, in a configuration without the extension portion 64B, the tip portion PF (FIG. 4) of the sheet P may enter this gap. On the other hand, in the present embodiment, the extension portion 64B extends in the -B direction from the upper surface 71A. Therefore, even when the tip portion PF of the sheet P is about to enter between the base portion 64A and the upper surface 71A, the sheet P and the extension portion 64B interfere with each other. As a result, when the tip portion PF of the sheet P contacts the first friction member 64, the entry of the tip portion PF between the base portion 64A and the upper surface 71A is suppressed. Note that the same operation can be obtained for the extension portion 64B in the +B direction.

[0048] The second friction member 66 has an H-shaped outer shape when viewed from the A direction. As an example, the second friction member 66 includes a base portion 66A attached to the vertical wall portion 72, an extension portion 66B extended from the base portion 66A, and a recessed portion 66C. The base portion 66A is formed in a rectangular shape with the dimension in the B direction being longer than the dimension in the X direction. The extension portion 66B is a plate-like portion extended from the base portion 66A in the +B direction and -B direction, respectively, at the end portion in the +X direction of the base portion 66A. The extension portion 66B is inserted into the notch portion 75.

[0049] The recessed portion 66C is formed at a portion where both end faces in the B direction of the base portion 66A and the side face in the -X direction of the extension portion 66B are connected in the second friction member 66. The recessed portion 66C is formed in a semi-circular shape when viewed from the A direction. The recessed portion 66C functions as a relief portion when the second friction member 66 is attached to the vertical wall portion 72. That is, the formation of the recessed portion 66C facilitates the attachment of the second friction member 66 to the vertical wall portion 72. Regarding the extension portion 66B, similar to the extension portion 64B, an effect can be obtained that the leading end portion PF of the sheet P hardly enters the gap. For this reason, the description of the action of the extension portion 66B is omitted. In the present embodiment, due to the difference in moldability, the size of the recessed portion 64C is larger than the size of the recessed portion 66C.

[0050] FIG. 7 shows the positions in the +A direction of each surface in a state where the end alignment portion 62 and the center alignment portion 76 are brought closer in the X direction. The center alignment portion 76 includes, as an example, a third friction member 78 and a mounting member 82. The third friction member 78 is formed in a plate shape having a predetermined thickness in the A direction, as an example. The third friction member 78 is made of a cork board, as an example. A third alignment surface 79 is formed at the -A direction end of the third friction member 78. The third alignment surface 79 is formed in a planar shape along the X-B plane. The third alignment surface 79 has a third friction coefficient μ3 in contact with the sheet P. The third friction coefficient μ3 is higher than the second friction coefficient μ2. Also, the third friction coefficient μ3 is set to be approximately the same value as the first friction coefficient μ1, as an example.

[0051] The mounting member 82 has a configuration in which sheet metal is bent at a plurality of locations, as an example. The width of the mounting member 82 in the X direction is larger than the width of the mounting member 68 in the X direction, as an example. Note that the mounting member 82 has a shape similar to that of the mounting member 68 when viewed from the X direction, and a part of it is fixed to the processing tray 42 (FIG. 2). The mounting member 82 has a vertical wall portion 84 that stands upright in the +B direction. The vertical wall portion 84 is formed in a plate shape having a predetermined thickness in the A direction. The third friction member 78 is attached to the mounting surface 84A in the -A direction of the vertical wall portion 84. For example, double-sided tape is used to attach the third friction member 78.

[0052] As shown in FIGS. 4, 7, and 8, the length L1 [mm] in the X direction of the first alignment surface 65 and the length L2 [mm] in the X direction of the second alignment surface 67 are, for example, of approximately the same length. The length L3 [mm] in the X direction of the third alignment surface 79 is greater than the length L1 and the length L2. The first alignment surface 65 is provided on the upstream side in the +A direction from the third alignment surface 79. The second alignment surface 67 is on the upstream side in the +A direction with respect to the first alignment surface 65 and is located on the central side in the X direction of the placement region S (FIG. 3) with respect to the first alignment surface 65. The third alignment surface 79 is located on the central side in the X direction with respect to the second alignment surface 67. The third alignment surface 79 is provided on the downstream side in the +A direction from the second alignment surface 67.

[0053] As described above, the alignment portion 60 has, for example, two first alignment surfaces 65 and two second alignment surfaces 67 respectively. The two first alignment surfaces 65 and the two second alignment surfaces 67 are arranged on one side in the X direction, the +X direction, and the other side, the -X direction, with respect to the center line C (FIG. 3) of the placement region S. Also, the two first alignment surfaces 65 and the two second alignment surfaces 67 are arranged to be line-symmetrical with respect to the center line C.

[0054] As shown in FIG. 7, in the +A direction, assume that the second alignment surface 67 is at position P1, the first alignment surface 65 is at position P2, and the third alignment surface 79 is at position P3. Also, in the +A direction, assume that the mounting surface 72A is at position P4 and the mounting surface 84A is at position P5. Here, for example, in the order from upstream to downstream in the +A direction, they are arranged in the order of position P1, position P2, position P3, position P4, and position P5. However, the magnitudes of the intervals in the +A direction between position P1, position P2, position P3, position P4, and position P5 are different.

[0055] As shown in FIG. 8, let the length L4 [mm] in the X direction of the vertical wall portion 72. As an example, L4 = L1 + L2. The first friction member 64 is, for example, in contact with the second friction member 66 in the X direction. The first alignment surface 65 is offset in the +A direction with respect to the second alignment surface 67. That is, a step portion 77 is formed around the contact portion between the first friction member 64 and the second friction member 66. Furthermore, the cross-sectional shape of the X - A plane of the first friction member 64 and the cross-sectional shape of the X - A plane of the second friction member 66 are each a rectangular shape in which the dimension in the X direction is longer than the dimension in the A direction. Let the portion corresponding to the downstream end of the paper P in the +A direction be the leading end portion PF. Also, when the paper P is skewed, let the angle θ [°] formed by the line representing the end face of the leading end portion PF and the X direction.

[0056] When the topmost sheet P enters between the plurality of sheets P stacked on the processing tray 42 (FIG. 3) and the alignment portion 60 in a state where the first alignment surface 65 and the second alignment surface 67 are absent, let the minimum skew angle θ = θ1 [°] in the direction intersecting the X direction of the topmost sheet P. Also, the length of the first alignment surface 65 in the X direction is the length L1. In the following description, the entry of the topmost sheet P between the plurality of sheets P and the alignment portion 60 will be described as "the sheet P sinks in".

[0057] Here, let the length corresponding to the positional deviation in the +A direction between the second alignment surface 67 and the first alignment surface 65 be the length L5 [mm]. The length L5 is set to be equal to or less than the length L5 obtained by the arithmetic expression L5 = (L1)×tanθ1. That is, when the paper P is in a skewed state and contacts the first friction member 64 and the second friction member 66, the skew angle θ of the paper P becomes equal to or less than the angle θ1, so that the sinking of the paper P is suppressed.

[0058] As shown in FIG. 9, the first alignment surface 65, for example, has substantially the same surface roughness in each part in the +B direction. That is, the first friction coefficient μ1 of the first alignment surface 65 is higher than the second friction coefficient μ2 of the second alignment surface 67 in each part in the +B direction.

[0059] Next, the operations of the loading unit 34 and the post-processing device 30 in the recording system 1 of Embodiment 1 will be described. Note that, for each component of the recording system 1 that has already been described, the description of the figure number where each component is shown may be omitted.

[0060] As shown in FIG. 10, a case will be described in which, when a plurality of sheets P are stacked on the processing tray 42 and the lower wall portion 71, the topmost sheet P is conveyed by the conveying unit 44 (FIG. 2) toward the alignment unit 60. Note that, in FIG. 10, only the end alignment unit 62 is shown, and the illustration of the center alignment unit 76 (FIG. 3) is omitted.

[0061] When a sheet P with a relatively small amount of ink Q used during recording is conveyed by the conveying unit 44, in the sheet P, the degree of swelling of the sheet P due to impregnation with the ink Q is low. For this reason, the occurrence of curling of the sheet P and the decrease in the rigidity of the sheet P with respect to an external force acting in the A direction are suppressed, so that the sheet P is less likely to sink in.

[0062] On the other hand, when a sheet P with a relatively large amount of ink Q used during recording is conveyed by the conveying unit 44, in the sheet P, the degree of swelling of the sheet P due to impregnation with the ink Q is high. For this reason, curling may occur in the sheet P, or the rigidity of the sheet P with respect to an external force acting in the A direction may decrease, so that the angle θ of the leading end portion PF of the sheet P heading toward the alignment unit 60 may increase in a direction intersecting the X direction.

[0063] When the topmost sheet P reaches the alignment unit 60 in an inclined state, a part of the sheet P at the leading end portion PF in the X direction comes into contact with the first friction member 64. Here, when the leading end portion PF of the sheet P tries to move in the -B direction, due to the high first friction coefficient μ1, a relatively large frictional force acts on the sheet P. As a result, the leading end portion PF of the sheet P is suppressed from entering the gap between the leading end portions PF of the plurality of sheets P already stacked and the alignment unit 60.

[0064] When the conveyance of the top sheet P continues, other portions in the X direction at the leading end PF of the sheet P reach the alignment portion 60. At this time, a part of the sheet P that has reached the alignment portion 60 earlier is in a bent state. Here, when the first paddle 48 and the second paddle 54 reach positions where they do not contact the sheet P by rotation, the conveyance force acting on the sheet P from the first paddle 48 and the second paddle 54 is released. For this reason, the bending of a part of the sheet P that has reached the alignment portion 60 earlier is eliminated, so that the leading end PF of the sheet P is in an aligned state along the X direction. Then, the plurality of sheets P are stapled by the stapler 61 to form a sheet bundle PT.

[0065] As shown in FIG. 11, the sheet bundle PT is sandwiched in the X direction by the first cursor 59A and the second cursor 59B. Subsequently, when the first cursor 59A and the second cursor 59B are moved in the -X direction, the sheet bundle PT is moved in the -X direction.

[0066] As shown in FIG. 12, when the sheet bundle PT is moved in the -X direction, since the first alignment surface 65 is offset in the +A direction with respect to the second alignment surface 67, the leading end PF of the sheet bundle PT is in a non-contact state with the first alignment surface 65 and in contact with the second alignment surface 67, and is moved in the -X direction. Thereby, it is possible to suppress the movement of the sheet bundle PT in the -X direction from being restricted by the first friction member 64 having a large frictional force. The same operation also applies when the sheet bundle PT is shifted in the +X direction.

[0067] As described above, with one or more sheets P placed or stacked on the processing tray 42, the sheet P conveyed onto the sheet P of the processing tray 42 is defined as the upper sheet PA. Also, assume that the upper sheet PA is conveyed onto the sheet P of the processing tray 42 in a bent state. According to the loading unit 34 of Embodiment 1, the upper sheet PA is conveyed by the conveying unit 44 toward the alignment unit 60. At this time, the upper sheet PA may be conveyed in a state inclined in a direction intersecting the +A direction and the X direction, that is, in a skewed state. In the skewed state, when a part of the leading end portion PF downstream of the upper sheet PA comes into contact with the first alignment surface 65, a part of the leading end portion PF tends to move toward the processing tray 42. Here, since the first friction coefficient μ1 is higher than the second friction coefficient μ2, a large frictional force acts on a part of the leading end portion PF in the direction opposite to the moving direction. Therefore, it is possible to suppress a part of the leading end portion PF from entering between the leading end portion PF downstream of the already loaded sheet P and the alignment unit 60.

[0068] Subsequently, as the conveyance of the upper sheet PA continues, a part of the leading end portion PF bends, and another part of the leading end portion PF reaches a position substantially the same as the position of a part of the leading end portion PF in the +A direction. At this time, by releasing the pressing force acting on the upper sheet PA from the conveying unit 44, the skewed state of the upper sheet PA is corrected. Also, at this time, another part of the leading end portion PF comes into contact with the second alignment surface 67. Here, since the second alignment surface 67 is located upstream in the +A direction from the first alignment surface 65, as the skewed state of the upper sheet PA is corrected, the leading end portion PF of the upper sheet PA moves away from the first alignment surface 65 and comes into contact with the second alignment surface 67. That is, a part of the leading end portions PF of the plurality of sheets P including the upper sheet PA loaded on the processing tray 42 comes into contact with the second alignment surface 67.

[0069] The plurality of sheets P including the upper sheet PA are moved in the X direction by the moving unit 58. Here, since the second friction coefficient μ2 is lower than the first friction coefficient μ1, the frictional force acting on the leading end portions PF of the plurality of sheets P in the direction opposite to the moving direction becomes smaller. Thereby, when moving the plurality of sheets P in the X direction, the load acting on the plurality of sheets P can be reduced. Furthermore, according to the loading unit 34, since it is not necessary to move the first alignment surface 65 and the second alignment surface 67, the configuration of the loading unit 34 becomes a simple configuration.

[0070] According to the stacking unit 34, when the conveyance of the sheet P in the +A direction continues even after the leading end PF of the sheet P comes into contact with the second alignment surface 67, the portion on the center side of the sheet P in the X direction comes into contact with the third alignment surface 79. Here, when the leading end PF of the sheet P attempts to move toward the processing tray 42, due to the third friction coefficient μ3 being higher than the second friction coefficient μ2, a relatively large frictional force acts on the central portion PC of the sheet P in the X direction. Thereby, it is possible to suppress the leading end PF of the sheet P in the +A direction from entering the gap between the leading end PF of the already stacked sheet P in the +A direction and the third alignment surface 79. Furthermore, since the third alignment surface 79 is provided on the downstream side in the +A direction from the second alignment surface 67, the chance of the third alignment surface 79 coming into contact with the sheet P is reduced compared to the chance of the second alignment surface 67 coming into contact with the sheet P. Therefore, when a plurality of sheets P are moved in the X direction, the load acting on the moving unit 58 can be reduced.

[0071] When the sheet P is in an inclined state inclined with respect to the +A direction, among the corner portions PE of the sheet P in the X direction, the leading corner portion PE on the leading side in the +A direction is located on the downstream side in the +A direction from the central portion PC at the leading end of the sheet P in the +A direction. In other words, the leading corner portion PE on the leading side of the inclined sheet P is located ahead in the +A direction compared to the central portion PC. Here, according to the stacking unit 34, since the first alignment surface 65 is provided on the upstream side in the +A direction from the third alignment surface 79, the corner portion PE that precedes the central portion PC of the sheet P can come into contact with the first alignment surface 65 having a high friction coefficient at an early stage. Thus, it is possible to suppress the sheet P from entering the gap between the leading end PF of the already stacked sheet P in the +A direction and the first alignment surface 65. Note that after the skew of the sheet P is eliminated by the leading end PF of the sheet P coming into contact with the first alignment surface 65, when a plurality of sheets P are moved in the X direction, the plurality of sheets P come into contact with the second alignment surface 67 having a low friction coefficient. Therefore, the load acting on the moving unit 58 can be reduced.

[0072] According to the stacking unit 34, when the sheet P conveyed toward the alignment unit 60 is skewed, the leading end PF of the sheet P can be brought into contact with the first alignment surface 65 and the second alignment surface 67 regardless of whether one side of the leading end PF of the sheet P in the X direction is located downstream of the other side or the other side of the leading end PF of the sheet P in the X direction is located downstream of the one side. According to the stacking unit 34, at least in the +B direction, the first friction coefficient μ1 of the first alignment surface 65 is higher than the second friction coefficient μ2 of the second alignment surface 67. For this reason, since the downstream leading end PF of the sheet P is suppressed from entering between the downstream leading end PF of the sheet P already loaded on the processing tray 42 and the alignment unit 60, when the sheet P is conveyed to the processing tray 42, it is possible to suppress the alignment of the leading end PF of the sheet P already loaded from being disturbed.

[0073] According to the stacking unit 34, when the first alignment surface 65 is worn, only the first friction member 64 needs to be replaced. That is, since it is not necessary to replace the entire alignment unit 60, the amount of members discarded in the replacement of the first alignment surface 65 can be reduced. According to the stacking unit 34, when the second alignment surface 67 is worn, only the second friction member 66 needs to be replaced. That is, since it is not necessary to replace the entire alignment unit 60, the amount of members discarded in the replacement of the second alignment surface 67 can be reduced.

[0074] According to the post-processing device 30, when moving a plurality of sheets P in the X direction, the load acting on the plurality of sheets P can be reduced, so that it is possible to suppress the plurality of moved sheets P from being deformed.

[0075] 〔Embodiment 2〕 Next, the recording system 1, the post-processing device 30, and the loading unit 90 of Embodiment 2 will be described with reference to the accompanying drawings. The loading unit 90 of Embodiment 2 is different from the loading unit 34 (FIG. 7) of Embodiment 1 in the positions of the first alignment surface 65 and the third alignment surface 79. Other configurations are the same as those of Embodiment 1. Therefore, for the same configurations as those of Embodiment 1, the description of individual figure numbers will be omitted by referring to FIGS. 1 to 12.

[0076] As shown in FIG. 13, the third alignment surface 79 of Embodiment 2 is provided on the upstream side in the +A direction from the first alignment surface 65. Specifically, from the aforementioned position P1 to position P5, in the order of position P1, position P3, position P2, position P5, and position P4, they are located from the upstream to the downstream in the +A direction.

[0077] Next, the operation of the loading unit 90 of Embodiment 2 will be described. Since the recording system 1 and the post-processing device 30 have the same operation, the description will be omitted. When the paper P being conveyed toward the alignment unit 60 is not skewed or has a small skew amount, the paper P after the tip PF in the +A direction contacts the second alignment surface 67 may be in a conveyance state where the central portion PC in the X direction precedes the corner portion PE downstream in the +A direction. Here, according to the loading unit 90 of Embodiment 2, since the third alignment surface 79 is provided on the upstream side in the +A direction from the first alignment surface 65, the central portion PC that precedes the corner portion PE of the paper P can come into contact with the third alignment surface 79 having a high coefficient of friction at an early stage. Therefore, it is possible to suppress the paper P from entering the gap between the tip PF in the +A direction of the already loaded paper P and the third alignment surface 79. Note that after the skew of the paper P is eliminated by the tip PF of the paper P contacting the third alignment surface 79, when a plurality of papers P are moved in the X direction, the plurality of papers P will contact the second alignment surface 67 having a low coefficient of friction. Therefore, the load acting on the moving unit 58 (FIG. 2) can be reduced.

[0078] [Embodiment 3] Next, the recording system 1, the post-processing device 30, and the loading unit 94 of Embodiment 3 will be described with reference to the accompanying drawings. The loading unit 94 of Embodiment 3 is provided with an end alignment unit 96 instead of the end alignment unit 62 (FIG. 7) in the loading unit 34 (FIG. 7) of Embodiment 1. Other configurations are the same as those of Embodiment 1. Therefore, for the same configurations as those of Embodiment 1, the descriptions with individual figure numbers will be omitted by referring to FIGS. 1 to 12.

[0079] As shown in FIG. 14, the end alignment unit 96 of Embodiment 3 includes, as an example, a first friction member 64 and a mounting member 98. Note that the end alignment unit 96 in the +X direction will be illustrated and described, and the illustration and description of the end alignment unit 96 in the -X direction will be omitted. The mounting member 98 has, as an example, a configuration in which a stainless steel plate is bent at a plurality of locations. The mounting member 98 has a configuration in which a vertical wall portion 99 is provided instead of the vertical wall portion 72 (FIG. 7) in the mounting member 68 (FIG. 7) of Embodiment 1. The configurations other than the vertical wall portion 99 are the same as those of the mounting member 68.

[0080] When viewed from the B direction, the vertical wall portion 99 is bent at two locations in a crank shape. Specifically, the vertical wall portion 99 has a mounting surface 102, a side surface 103, and a second alignment surface 104. In other words, the second alignment surface 104 is formed on the mounting member 98. The mounting surface 102 is a plane along the X-B plane. The first friction member 64 is attached to the mounting surface 102 using a double-sided tape (not shown). The side surface 103 extends from the -X direction end of the mounting surface 102 in the -A direction. The second alignment surface 104 extends from the -A direction end of the side surface 103 in the -X direction. The second alignment surface 104 is a surface along the X-B plane. The coefficient of friction between the second alignment surface 104 and the sheet P is, as an example, the second coefficient of friction μ2.

[0081] Next, the operation of the loading unit 94 of Embodiment 3 will be described. Note that since the recording system 1 and the post-processing device 30 have the same operation, the description will be omitted. According to the loading unit 94, since the second alignment surface 104 is formed on the attachment member 98, the operation of attaching the member on which the second alignment surface 104 is formed to the attachment member 98 becomes unnecessary.

[0082] An example of the medium loading device and the post-processing device according to Embodiments 1 to 3 of the present invention is basically configured as described above, but it is of course possible to make partial configuration changes and omissions without departing from the gist of the present invention.

[0083] 〔First Modification Example〕 As shown in FIG. 15, as a first modification example of Embodiment 1, an end alignment portion 110 may be configured. In the end alignment portion 110 of the end alignment portion 62 (FIG. 7) of Embodiment 1, the first friction member 64 extends in the X direction. Further, the thickness of the second friction member 66 is thinner than that in Embodiment 1, and the second friction member 66 is attached to the end face in the -A direction at a portion in the -X direction from the center of the first friction member 64. Thus, the second friction member 66 may be attached to the first friction member 64.

[0084] 〔Second Modification Example〕 As shown in FIG. 16, as a second modification example of Embodiment 1, an end alignment portion 112 may be configured. The end alignment portion 112 has a configuration in which an overhanging portion 114 is provided at the +X direction end of the second friction member 66 in the end alignment portion 62 (FIG. 7) of Embodiment 1. The overhanging portion 114 is a plate-like portion that protrudes in the +X direction from the end of the second friction member 66 in the +X direction and -A direction. The overhanging portion 114 covers the boundary portion between the first friction member 64 and the second friction member 66 from the -A direction. Thus, the second friction member 66 may be attached to both the first friction member 64 and the attachment member 68.

[0085] 〔Third Modification Example〕 As shown in FIG. 17, as a third modification of the first embodiment, the first mating surface 65 and the second mating surface 67 may be arranged at intervals in the X direction. Let the length L6 [mm] in the X direction from the +X direction end of the first mating surface 65 to the +X direction end of the second mating surface 67. Also, let the minimum skew angle θ = θ1 [°]. Also in this configuration, by setting the length L5 to a length equal to or less than the length L5 obtained from the above-described arithmetic expression L5 = (L6) × tan θ1, the intrusion of the paper P can be suppressed. Further, according to this configuration, even if a manufacturing error occurs when attaching the first friction member 64 and the second friction member 66, since the first mating surface 65 and the second mating surface 67 are separated in the X direction, interference does not occur between the first friction member 64 and the second friction member 66. That is, it is possible to suppress the occurrence of manufacturing errors.

[0086] 〔Other Modifications〕 In the loading unit 34 of the first embodiment, the alignment portion 60 may not include the third friction member 78 and the third alignment surface 79. The third friction coefficient μ3 may be lower or higher than the first friction coefficient μ1 as long as it is higher than the second friction coefficient μ2. The end alignment portion 62 may be arranged in only one of the +X direction and the -X direction. The first mating surface 65 is not limited to having a friction coefficient higher than the second friction coefficient μ2 over the entire +B direction, and may partially have a friction coefficient comparable to the second friction coefficient μ2. Also, the first mating surface 65 may have a friction coefficient comparable to the second friction coefficient μ2 in a part of the X direction.

[0087] As long as the first friction member 64, the second friction member 66, and the third friction member 78 have high rigidity against the force acting in the +A direction, they may be directly attached to the processing tray 42 without using the attachment members 68 and 82. The first mating surface 65 may be formed on the attachment member 68. For example, the first mating surface 65 may be provided by rough machining the surface of the vertical wall portion 72.

[0088] The third friction member 78 may be configured in an H shape when viewed from the +A direction. Regarding the corner of the second friction member 66 closer to the first friction member 64, by forming an R surface or a tapered surface, the movement of the paper P from the first alignment surface 65 to the second alignment surface 67 may be facilitated. The first alignment surface 65 and the third alignment surface 79 may be at the same position in the +A direction.

[0089] In the loading unit 90 of Embodiment 2 and the loading unit 94 of Embodiment 3, a configuration similar to the modification example of the loading unit 34 may be applied.

Explanation of Reference Numerals

[0090] 1…Recording system, 10…Printer, 12…Scanner unit, 14…Main body portion, 16…Paper storage portion, 18…Recording portion, 22…Inner body discharge portion, 24…Relay unit, 30…Post-processing device, 32…Device main body, 33…Discharge tray, 34…Loading unit, 35…Guide member, 36…Pressing member, 36A…Shaft portion, 37…Flap, 37A…Shaft portion, 38…Discharge roller, 42…Processing tray, 43…Placement surface, 44…Conveying portion, 46…Feeding roller, 48…First paddle, 49…Rotating shaft, 51…Blade portion, 52…First driving portion, 54…Second paddle, 55…Rotating shaft, 56…Second driving portion, 57…Blade portion, 58…Moving portion, 59A…First cursor, 59B…Second cursor, 60…Alignment portion, 61…Stapler, 62…End alignment portion, 64…First friction member, 64A…Base portion, 64B…Extension portion, 64C…Depressed portion, 65…First alignment surface, 66…Second friction member, 66A…Base portion, 66B…Extension portion, 66C…Depressed portion, 67…Second alignment surface, 68…Mounting member, 69…Fixing portion, 71…Lower wall portion, 71A…Upper surface, 72…Vertical wall portion, 72A…Mounting surface, 73…Upper wall portion, 75…Notch portion, 76…Central alignment portion, 77…Step portion, 78…Third friction member, 79…Third alignment surface, 82…Mounting member, 84…Vertical wall portion, 84A…Mounting surface, 90…Loading unit, 94…Loading unit, 96…End alignment portion, 98…Mounting member, 99…Vertical wall portion, 102…Mounting surface, 103…Side surface, 104…Second alignment surface, 110…End alignment portion, 112…End alignment portion, 114…Overhanging portion, L1…Length, L2…Length, L3…Length, L4…Length, L5…Length, L6…Length, C…Center line, P…Paper, P1…Position, P2…Position, P3…Position, P4…Position, P5…Position, PA…Upper paper, PC…Central portion, PE…Corner portion, PF…Tip portion, PT…Paper bundle, Q…Ink, S…Placement area, θ…Oblique angle, θ1…Angle, θ2…Angle, μ1…First friction coefficient, μ2…Second friction coefficient, μ3…Third friction coefficient

Claims

1. A placing part having a placing area on which a recorded medium is placed; An aligning part for aligning the tip of the medium conveyed to the placing part on the downstream side in the conveying direction; A conveying part for conveying the medium conveyed to the placing part toward the aligning part; A moving part for moving a plurality of the media stacked on the placing part in a width direction intersecting the conveying direction; comprising: The aligning part: has a first aligning surface having a first friction coefficient in contact with the medium; has a second aligning surface having a second friction coefficient lower than the first friction coefficient in contact with the medium; and has: The second aligning surface is on the upstream side of the first aligning surface in the conveying direction and is located on the central side in the width direction of the placing area with respect to the first aligning surface; The aligning part includes a third aligning surface located on the central side in the width direction with respect to the second aligning surface; A third friction coefficient of the third aligning surface in contact with the medium is higher than the second friction coefficient; The third aligning surface is provided on the downstream side of the second aligning surface in the conveying direction; A medium stacking device characterized by the above.

2. In the medium stacking device according to Claim 1, the first aligning surface is provided on the upstream side of the third aligning surface in the conveying direction; A medium stacking device characterized by the above.

3. In the medium stacking device according to Claim 1, the third aligning surface is provided on the upstream side of the first aligning surface in the conveying direction; A medium stacking device characterized by the above.

4. In the medium stacking device according to any one of Claims 1 to 3, The integrating part has a plurality of the first mating surfaces and the second mating surfaces respectively, The plurality of the first mating surfaces and the second mating surfaces are respectively arranged on one side and the other side in the width direction with respect to the center in the width direction of the placing area, A media loading device characterized by the above.

5. In the media loading device according to any one of Claims 1 to 4, The first friction coefficient of the first mating surface is higher than the second friction coefficient of the second mating surface at least in the loading direction of the media, A media loading device characterized by the above.

6. In the media loading device according to any one of Claims 1 to 5, The integrating part includes a first friction member having the first mating surface and a mounting member to which the first friction member is attached, A media loading device characterized by the above.

7. In the media loading device according to Claim 6, The second mating surface is formed on a second friction member attached to at least one of the mounting member and the first friction member, A media loading device characterized by the above.

8. In the media loading device according to Claim 6, The second mating surface is formed on the mounting member, A media loading device characterized by the above.

9. A post-processing device comprising the media loading device according to any one of Claims 1 to 8 and A processing part that processes a plurality of the media placed on the placing part, and is characterized by the above. A post-processing device characterized by the above.

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