JP2006240748A - Sheet stock mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet stock mechanism capable of certainly eliminating a disturbance in the order of paper sheets P being fed while the constitution remains simple and managing well using the same constitution even with the case where three or more sheets are transported in a pile. <P>SOLUTION: The sheet stock mechanism 20 is equipped with a sheet receiving plate 42 inclined so that the top of its oversurface is mating with a guide roller couple R51 for sheets P and structured so that the sheets P carried in by the guide roller couple R51 are reserved on the oversurface of the sheet receiving plate 42, wherein the arrangement includes a guide roller R52 installed at the top of the plate 42 and rotating in the specified direction for guiding downward the leading edge of each sheet P carried in from the guide roller couple R51 with the rotating peripheral surface and an elevating/sinking member 43 installed at the bottom of the plate 42 and inclining the sheet P toward the plate 42 by abutting the trailing edge of the sheet P to the rotating peripheral surface of the guide roller R52 in the condition that the leading edge of the sheet P being guided is supported. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a paper stock mechanism for storing paper carried in from a carry-in port on an upper surface of a stock member, and is suitable for a paper stock mechanism employed in a post-processing device of an image forming apparatus, for example.

  For example, in Patent Document 1, the processing tray includes a paper stock portion provided with a paddle for pressing the paper in a guide path for guiding the paper, and the rear end portion of the paper stocked here is pressed against the paddle. In this state, subsequent sheets are further stocked. Therefore, the occurrence of a jam due to a collision between sheets is prevented, and even a sheet that has undergone a paper folding process can be stocked without causing a jam. Accordingly, it is described that it is possible to perform high-speed processing because it is not necessary to stop the conveyance of the paper while the staple processing as post-processing is performed on the bundle of paper.

  Japanese Patent Application Laid-Open No. 2004-228561 describes that a paddle that presses an upstream end in the sheet discharge direction of a bundle of sheets stapled on the discharge tray is described.

Further, Patent Document 3 includes a driving unit that superimposes the first and second sheets in the sheet conveyance path and then conveys them to the intermediate tray, and a control unit that controls the timing of the driving unit. Things are listed.
JP 2001-171889 A Japanese Patent No. 3423462 Japanese Patent Laid-Open No. 9-235069

  However, in all cases, when the paper is unstably stacked due to curling or the like when the paper is stored, the subsequent paper enters the gap between the paper floating on the tray due to curling or the like, and the paper is changed (in order). ) And jams due to collisions. In addition, in order to prevent the sheet from being replaced, there is a problem that when the loaded sheet is moved toward one end by the paddle, the operation sound (noise) of the paddle is increased.

  The present invention has been made in view of such a situation, and provides a paper stock mechanism that can prevent the change of the order of stacked sheets without generating noise and can reliably prevent the occurrence of a conveyance jam due to a collision. It is an object.

  The present invention includes a stock member that is inclined so that the upper end side of the upper surface faces a paper carry-in entrance, and is configured to store the paper that is carried in from the carry-in entrance on the upper surface of the stock member. The rotating member that is provided on the upper end side of the stock member and rotates in a predetermined direction to guide the leading edge of the carried-in paper downward with the rotating peripheral surface, and the lower end side of the stock member And a support member that tilts the paper toward the stock member by bringing the rear end of the paper into contact with the rotating peripheral surface of the rotating member while supporting the leading edge of the guided paper. It is characterized by that.

  According to a second aspect of the present invention, the rotating member is provided at one of the pair of carry-in rollers provided at the paper carry-in entrance and carries the paper into the stock member, and one of the rollers is more paper than the other roller. It is preferable to have a peripheral surface with a large coefficient of friction against

  As in the third aspect of the invention, it is preferable that the support member is movable up and down along the stock member.

  According to the present invention, when the rotating member provided on the upper end side of the stock member rotates in a predetermined direction, the leading edge of the carried-in paper is guided downward by the rotating peripheral surface, and the stock With the support member provided on the lower end side of the member supporting the leading edge of the guided paper, the paper is brought into contact with the rotating peripheral surface of the rotating member so that the paper is a stock member. Therefore, the rear end portion of the paper stored on the upper surface of the stock member is retracted from the front end portion of the succeeding paper. Therefore, even when the paper is unstably stacked due to curling or the like when storing the paper, the subsequent paper enters the gap between the paper that is floating from the upper surface of the stock member due to curling or the like, and the paper is replaced. This eliminates the occurrence of jams due to collisions. Further, since no paddle is required to prevent the paper from being replaced, the operation noise (noise) is not generated.

  According to the invention described in claim 2, the rotating member is provided at one of the pair of carry-in rollers provided at the carry-in port of the paper and carries the paper into the stock member, and one of the rollers is more paper than the other roller. The peripheral surface of the rotating member is surely brought into contact with the rear end portion of the paper, and the paper can be reliably tilted toward the stock member side, although the peripheral surface has a large friction coefficient against the surface. it can.

  According to the third aspect of the present invention, since the support member can be moved up and down along the stock member, the position of the stock member can be adjusted according to the paper size.

  FIG. 1 is a side sectional view of a post-processing apparatus equipped with a paper stock mechanism according to an embodiment of the present invention. As shown in FIG. 1, this post-processing apparatus 10 is provided adjacent to a copying machine, a facsimile machine, and an image forming apparatus 19 applied as various printers, and has a vertically long box-like housing. In the body 11, a sheet retracting section 13 provided in the sheet transport path R for retracting the sheet P for a predetermined time, and a bundle of sheets P (sheet bundle P 1, 1) disposed below the sheet retracting section 13 and discharged. .., And a stapling process for binding the paper bundles P1, P2, P3,... To the paper bundles P1, P2, P3,. A stapling mechanism (predetermined paper processing device) 53 is provided.

  Outside the housing 11, a job tray 14 erected on the side surface (left side in FIG. 1) and a general-purpose tray 15 disposed below the job tray 14 are provided.

  The sheet conveyance path R is provided at the upper part of the side surface (right side in FIG. 1) of the casing 11 and is a sheet transfer opening for transferring the sheet P discharged from the sheet discharge port 191 of the image forming apparatus 19. A transport path R1 on the entrance side from 111 to the paper retracting section 13, an annular transport path R2 formed in the paper retracting section 13 that follows the transport path R1, and a downstream side in the transport direction from the transport path R2 upward. The transport path R3 for the job tray branched toward the general purpose tray, the transport path R4 for the general purpose tray branched from the paper retracting section 13 to the general purpose tray 15 below the transport path R3, and the paper from the paper retracting section 13 to the paper. A conveyance path R5 hanging down toward the stock mechanism 20, a conveyance path R6 formed so as to vertically pass through the paper stock mechanism 20, and the conveyance path R6 and the staple mechanism 53 are formed to communicate with each other. Transport path R If, it consists stapled by the sheet bundle P1, P2, P3, Metropolitan conveyance path R8 for unloading the ... in staple mechanism 53.

  Each of the sheet retracting sections 13 is provided with a switching member for switching the conveyance path at an appropriate position, and is discharged from the image forming apparatus 19 into the conveyance path R1 through the sheet transfer opening 111 by a predetermined switching operation by these switching members. The paper P that has been printed is sent to a target location through a preset conveyance path.

  The sheet retracting section 13 has a retracting drum 131 for retracting the sheet P for a predetermined time before the sheet P sent from the transport path R1 is directed to the transport path R5. The retraction drum 131 is for winding the paper P and transporting the next paper P in an overlapping manner when the paper P is going from the transport path R1 to the transport path R5. The purpose of the stapling mechanism 53 is to staple the first sheet bundle P1, P2, P3,..., Because the leading sheet P of the second set cannot be carried into the transport path R5. It's about wrapping and waiting for that time. As a result, the paper P can be transported without stopping, so that the processing efficiency can be improved.

  A guide roller pair (a pair of carry-in rollers at the paper carry-in port) R51 that pushes the paper P toward the transport path R6 is provided at a substantially intermediate position in the transport path R5, and a roller R51a that constitutes the guide roller pair R51. (The side far from the paper receiving plate 42 in FIG. 2) rotates counterclockwise toward the paper surface, and the roller R51b (the side closer to the paper receiving plate 42 in FIG. 2) rotates clockwise toward the paper surface. The paper P is introduced into the transport path R6 in a stable and constant speed state.

  The job tray 14 includes a plurality of unit trays 141 arranged in parallel at a predetermined interval in the vertical direction, and any one of the unit trays 141 can be selected according to the type of job. For this selection, the job tray 14 is configured so that it can be moved up and down along a column 112 erected on the back surface of the housing 11. When a desired unit tray 141 is selected, the base of the unit tray 141 is selected. The end side is set at a position facing the downstream end of the transport path R3. Therefore, the paper P discharged through the transport path R3 is discharged to the unit tray 141 selected in advance.

  The general-purpose tray 15 receives the paper P from which the unit tray 141 as the paper discharge destination in the job tray 14 is not selected, that is, the general paper P discharged through the transport path R4. The end side is disposed opposite to the downstream end of the transport path R4.

  The sheet stock mechanism 20 stores sheets P sequentially introduced into the transport path R6 through the transport path R5 to form the sheet bundles P1, P2, P3,..., And the formed sheet bundle P1, Alignment processing for aligning end portions is performed on P2, P3,. The transport path R5 has a downstream end facing a position slightly above the intermediate position of the transport path R6.

  Therefore, the paper P once introduced into the transport path R6 through the transport path R5 becomes a sheet bundle P1, P2, P3,..., And is a stapling mechanism from the lower end portion of the transport path R6 via the transport path R7. 53. Then, the sheet bundles P1, P2, P3,... Subjected to the stapling process are discharged from the lower end portion of the transport path R6 to the outside (for example, the general-purpose tray 15) via the transport path R8. .

  Hereinafter, the paper stock mechanism 20 that characterizes the present invention will be described based on FIG. 2 and with reference to FIG. 1 as necessary. FIG. 2 is a schematic side view of the paper stock mechanism 20. 2 shows a state in which the front side of FIG. 2 is removed from the pair of side plates 41 in each width direction of the receiving unit 40 and the cover unit 50 (direction orthogonal to the paper surface of FIG. 2). ing.

  First, as shown in FIG. 2, the paper stock mechanism 20 includes a receiving unit 40 that receives the paper P from the transport path R5 and a cover unit 50 that covers the paper receiving surface of the receiving unit 40 so as to be freely opened and closed. It has become.

  The receiving unit 40 has a pair of side plates 41 in the width direction that are obliquely arranged with a length set so that the upper end portion faces the transport path R4 and the lower end portion is positioned on the lower right side in FIG. A sheet receiving plate (stock member) 42 for receiving the sheet P therebetween, an elevating member (supporting member) 43 that can be moved up and down between the upper position and the lower position along the sheet receiving plate 42, and the elevating member 43. Is constructed by interposing an endless belt 45 for raising and lowering the paper along the paper receiving plate 42 and a guide roller (rotating member) R52 for guiding the paper P to the paper receiving plate 42.

  The guide roller R52 is a roller having a roller width that can cover the entire width direction (maximum paper width) of the paper receiving plate 42, and the guide roller R52 of the paper P discharged to the transport path R6 through the guide roller pair R51. Like the roller R51b of the guide roller pair R51, it is provided close to the sheet receiving plate 42 to guide the leading end downward and to make contact with the trailing end of the sheet P, which will be described later, and in a predetermined direction. It is designed to rotate clockwise (toward the paper surface in FIG. 2). In order to ensure this guidance and the like, the peripheral surface has a large friction coefficient with respect to the paper P. Specifically, a roller having a rough surface, a sponge roller, a brush, or the like may be used.

  A plurality of sheet receiving plates 42 are arranged side by side in the width direction (direction perpendicular to the paper surface of FIG. 2), and the endless belt 45 for raising and lowering interferes with the gap between the arranged sheet receiving plates 42. It is arrange | positioned in the state fitted so that it may not. The elevating member 43 is fixed to an elevating endless belt 45 provided between the paper receiving plates 42, and is moved up and down along the paper receiving plate 42 by forward and reverse rotation of the elevating endless belt 45.

  As shown in FIG. 2, the lifting endless belt 45 is wound around a predetermined number of belt support rollers provided between a pair of side plates 41, and is provided between the side plates 41 at a substantially intermediate position in the longitudinal direction. Further, the belt is rotated by driving the belt motor 451b. The belt support roller includes a drive roller 452 concentrically fixed to the drive shaft of the belt motor 451b, and an endless belt for raising and lowering between the upper end portion, the lower end portion and the pair of side plates 41 between the pair of side plates 41. A predetermined number of driven rollers 453 provided at positions where 45 can be wound around the drive roller 452 are employed.

  Accordingly, the lifting endless belt 45 is rotated forward and backward between the driven rollers 453 via the driving roller 452 by forward / reverse driving of the belt motor 451b, and thereby the lifting endless belt 45 is connected to the lifting endless belt 45. The member 43 can be moved up and down along the sheet receiving plate 42.

  Further, as shown in FIG. 2, the elevating member 43 is connected to the pair of side plates 41 from the sheet bundle supporting position between the receiving unit 40 and the cover unit 50 via the lowest roller 453 positioned at the lowest position among the driven rollers 453. It can swing toward the retracted position, which is the lower position between them. When the elevating member 43 is positioned at the retracted position, the transport path R6 is communicated with the transport path R7, and the sheet bundles P1, P2, P3,... Are thereby introduced into the staple mechanism 53. Yes.

  The staple mechanism 53 is disposed below the sheet stock mechanism 20, and performs a stapling process on the sheet bundles P1, P2, P3,... Introduced from the transport path R7. A needle supply mechanism and a driving mechanism for driving the supplied binding needles into the sheet bundles P1, P2, P3,... Are provided.

  The cover unit 50 receives the paper P discharged to the transport path R6 and guides it in opposition to the paper receiving plate 42 of the unit 40 so as to form the paper bundle P1, P2, P3,. The unit 40 is placed over the pair of side plates 51 in the width direction (a direction orthogonal to the paper surface of FIG. 2), and is laid between the pair of side plates 51 so as to face the paper receiving plate 42 of the receiving unit 40. A cover plate 52 is provided.

  The cover unit 50 is rotatably supported around a roller shaft 453a that supports the lowest roller 453, and the transport path R6 is closed by rotating forward and backward around the roller shaft 453a in FIG. The posture can be changed between a closed posture shown by a solid line and an open posture shown by a two-dot chain line in FIG. 2 in which the conveyance path R6 is opened.

  The paper stock mechanism 20 configured as described above is provided with a control unit 80 formed of a microcomputer, and the paper P is smoothly introduced into the transport path R6 by the control of the control unit 80, and the introduced paper P is introduced. As a result, reliable alignment processing and the like are performed. FIG. 3 is a block diagram for explaining the alignment control of the sheet bundles P1, P2, P3,. As shown in this figure, the control unit 80 has a basic configuration including a CPU 81 and a ROM 82 and a RAM 83 attached to the CPU 81. The ROM 82 stores a program for executing this control, and the program is read into the CPU 81 every time the post-processing device 10 is powered on. The RAM 83 is used for reading and writing temporary data necessary for control.

  In the CPU 81, a sheet acceptance determining unit 811, a guide roller operation instruction unit 812, a lifting member operation instruction unit 813, and a sheet end determination unit 814 are constructed by reading a program. Outside the CPU 81, a counter 84 is provided that counts the number of sheets P discharged to the transport path R6 in one job.

  The sheet acceptance determination unit 811 outputs a predetermined signal toward the guide roller operation instruction unit 812 and the elevating member operation instruction unit 813 every time the sheet P passes through the transport path R5. For this purpose, the paper receiving determination unit 811 receives a detection signal of the paper P by a paper sensor (not shown), and takes the time from the signal until the paper P is conveyed to the guide roller pair R51 into consideration. The timing for carrying in the conveyance path R6 via the guide roller pair R51 is determined, and a signal indicating this is output to the guide roller operation instruction section 812.

  The guide roller operation instructing unit 812 outputs a control signal for rotating the guide roller R52 in the predetermined direction toward the driver 454a of the motor 451a after receiving a signal based on the determination result in the paper receiving determination unit 811. Is. Then, a signal based on the determination result in the paper receiving determination unit 811 is output to the guide roller operation instruction unit 812, and the guide roller operation instruction unit 812 having received this signal sends a guide roller to the driver 454a of the motor 451a. A control signal for rotating R52 in a predetermined direction is output.

  The counter 84 counts the number of sheets each time the sheet acceptance determination unit 811 determines acceptance of the sheet P, while the number of sheets P discharged from the image forming apparatus 19 to the post-processing apparatus 10 is input to the CPU 81. It is like that.

  The sheet end determination unit 814 outputs a signal based on the determination result to the guide roller operation instruction unit 812 and the lifting member operation instruction unit 813 when the number counted by the counter 84 matches the number information from the image forming apparatus 19. Upon receiving this output, the guide roller operation instruction unit 812 outputs a signal for stopping the rotation of the guide roller R52 to the driver 454a, and the elevating member operation instruction unit 813 outputs a signal for retracting the elevating member 43 downward. It outputs to the driver 454b. As a result, the guide roller R52 stops rotating and the elevating member 43 is retracted downward, so that the sheet bundles P1, P2, P3,... Aligned in the transport path R6 are stapled via the transport path R7. The paper is discharged. The sheet bundles P1, P2, P3,... Subjected to the stapling process by the stapling mechanism 53 are discharged to the outside through the transport path R8. Thereafter, the elevating member 43 is returned to the initial position (indicated by a solid line in FIG. 2) and is prepared for the paper P for the next job. This initial position can be adjusted according to the paper size. For example, when the paper P is A4 size, the elevating member 43 has the lower position indicated by the solid line in FIG. 2 as the initial position, and when the paper P is B5 size, the elevating member 43 is the two-dot chain line in FIG. The upper position indicated by is the initial position. This is convenient because it can be applied to papers of different sizes. In order to adjust the initial position, for example, in response to a signal from the image forming apparatus 19, the elevating member operation instruction unit 813 may output a control signal to the driver 454b of the motor 451b.

  Next, based on FIG. 4, the operation of the paper stock mechanism will be described with reference to FIG. 3 as necessary. FIG. 4 is an explanatory view schematically showing the operation of the paper stock mechanism 20. In the initial state, it is assumed that the elevating member 43 is at a lower position of the sheet receiving plate 42 as shown in FIG.

  In the state shown in FIG. 4, the sheet P1 delivered from the image forming apparatus 19 (FIG. 1) to the post-processing apparatus 10 passes through the transport paths R1 and R5 and is carried into the transport path R6 by driving the guide roller pair R51. Is done. At this time, the sheet acceptance determining unit 811 of the control unit 80 determines the timing. The counter 84 counts the sheet P1 as the first sheet.

  The paper P1 carried into the transport path R6 is guided by the peripheral surface of the guide roller R52 that rotates in a predetermined direction on the upper end side of the paper receiving plate 42, drops by gravity in the transport path R6, and is set at a lower position. The sheet P1 comes into contact with the upper surface of the elevating member 43, and the lower end edge of the sheet P1 is supported (P1a).

  Since the sheet P1a remains in contact with the peripheral surface of the rotating guide roller R52, the upper edge is compressed on the peripheral surface and deformed into an arc shape that slightly protrudes to the right in FIG. It is tilted toward the plate 42 side (P1b).

  Since the paper P1b is separated from the peripheral surface of the guide roller R52 before coming into contact with the paper receiving plate 42, the paper P1b tries to return to its original shape (P1c).

  Since the lower end edge of the sheet P1c is lifted from the sheet receiving plate 42, when the upper end edge comes into contact with the sheet receiving plate 42, the upper end edge of the sheet P1c is formed by the action of gravity on the sheet P1c. While sliding along the receiving plate 42, the lower edge starts to slide on the lifting member 43 toward the paper receiving plate 42 and eventually falls along the paper receiving plate 42 (P 1 d).

  In this state, the next sheet P2 has already passed through the transport paths R1 and R5 and is being carried into the transport path R6 by driving the guide roller pair R51. At this time, the sheet acceptance determining unit 811 determines the timing. The counter 84 counts the sheet P2 as the second sheet.

  The loaded paper P2 is tilted along the paper receiving plate 42 in exactly the same manner as the previous paper P1, and the next paper P3 passes through the transport paths R1 and R5 and drives the guide roller pair R51. When the sheet is carried into the transport path R6, the sheet acceptance determining unit 811 determines the timing, and the counter 84 counts the sheet P3 as the third sheet. In this way, the paper P is accurately positioned and stacked on the paper receiving plate 42, so that the so-called aligned paper bundles P1, P2, P3,.

  Next, when the number of sheets counted by the counter 84 coincides with the number information from the image forming apparatus 19, a retreat signal is output from the sheet end determination unit 814 to the elevating member operation instruction unit 813, and the elevating operation that receives this retraction signal. A control signal is further output from the instruction unit 813 toward the driver 454b. Then, the motor 451b (FIG. 2) is driven, and by this, the elevating member 43 is further lowered by the clockwise rotation of the endless belt 45 for elevating and circulates at the lowest position, and is opposite to the endless belt 45 for elevating. Go around (lower left in Fig. 2). In this manner, the elevating member 43 is retracted from the conveyance path R6, and the sheet bundles P1, P2, P3,... Are guided toward the staple mechanism 53 via the conveyance path R7.

  The sheet bundles P1, P2, P3,... Subjected to the stapling process by the stapling mechanism 53 are discharged to the outside through the transport path R8.

  As described above, in the sheet stock mechanism 20 according to the present embodiment, the guide roller R52 provided on the upper end side of the sheet receiving plate 42 rotates in a predetermined direction, so that the guide roller has a rotating peripheral surface. The leading end of the sheet P conveyed in the pair R51 is guided downward, and the elevating member 43 provided on the lower end side of the sheet receiving plate 42 supports the leading end of the guided sheet P, and the guide roller By bringing the rear end portion of the paper P into contact with the rotating peripheral surface of the R52, the paper P is tilted toward the paper receiving plate 42, so the rear end of the paper P stored on the upper surface of the paper receiving plate 42 The part is retracted from the leading end of the succeeding paper P. Therefore, even when the paper P is unstably stacked due to curling or the like when the paper is stored, the subsequent paper P enters the gap of the paper P that is in a state of floating from the upper surface of the paper receiving plate 42 due to curling or the like. Thus, the paper P is not changed, and the occurrence of a jam due to a collision is eliminated. Further, since no paddle is required to prevent the paper P from being replaced, the operation noise (noise) is not generated.

  In the above-described embodiment, the guide roller R52 is provided as a separate member from the guide roller pair R51 as the carry-in roller pair. As a modified example, as shown in FIG. The roller R51b on the side close to the receiving plate 42 can be used as the guide roller R52. In that case, it is necessary to set the friction coefficient with respect to the paper P larger than that of the other roller R51a (the side far from the paper receiving plate 42). By doing so, after the paper P is carried in by both the rollers R51a and R51b, the paper P is guided to the roller R51b having a higher friction coefficient so that the leading end is directed to the paper receiving plate 42 side. This is because the rear end portion of the rear end comes into contact with the roller R51b with certainty. In this case, it is not necessary to provide the guide roller R52 as a separate body, and the same effect as described above can be obtained with a simpler configuration.

  In the above embodiment, the elevating member 43 as the support member can be adjusted according to the paper size, and the elevating member 43 can be retracted when the staple mechanism 53 is used. However, the paper size is constant and the staple mechanism When 53 is not provided, there is no need to raise and lower the support member, so the support member can be formed of a fixed member.

  In the above-described embodiment, the stapling mechanism 53 provided below the paper stock mechanism 20 is described as the predetermined paper processing apparatus. However, the stapling mechanism 53 may be integrated with the paper stock mechanism 20. Further, the predetermined paper processing device may be a punching device or other paper processing device.

  In the above embodiment, the control unit 80 performs sequence control for sequentially performing each operation in accordance with a program prepared in advance. Therefore, sensors are not provided in particular. It is good also as performing.

It is a sectional side view of the post-processing apparatus with which the paper stock mechanism which concerns on one Embodiment of this invention was mounted | worn. It is a schematic side view of a paper stock mechanism. FIG. 5 is a block diagram for explaining sheet bundle alignment control by a control unit; It is an explanatory view schematically showing one operation of a paper stock mechanism. It is explanatory drawing which showed typically one operation | movement of the paper stock mechanism which concerns on a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Post-processing device 19 Image forming device 191 Paper discharge port 20 Paper stock mechanism 40 Receiving unit 42 Paper receiving plate (stock member)
43 Lifting member (supporting member)
53 Staple mechanism (paper processing device)
P (P1, P2, P3, ...) Paper (sheet bundle)
R (R1 to R8) Transport path R51 (R51a, R51b) Guide roller pair (a pair of carry-in rollers at the paper carry-in entrance)
R52 Guide roller (Rotating member)

Claims (3)

In a paper stock mechanism comprising a stock member inclined so that the upper end of the upper surface faces the paper carry-in entrance, and configured to store paper carried in from this carry-in entrance on the upper surface of the stock member,
A rotating member that is provided on the upper end side of the stock member, and that rotates in a predetermined direction to guide the leading edge of the carried-in paper downward with its rotating peripheral surface;
With the rear end of the paper abutting against the rotating surface of the rotating member while supporting the leading edge of the guided paper, provided at the lower end of the stock member, the paper is tilted toward the stock member. A sheet stock mechanism comprising: a supporting member that causes the sheet to be supported.   The rotating member is provided at one of the pair of carry-in rollers provided at the paper carry-in entrance and carries the paper into the stock member, and one of the rollers has a peripheral surface having a larger coefficient of friction with respect to the paper than the other roller. The paper stock mechanism according to claim 1.   3. The paper stock mechanism according to claim 1, wherein the support member is movable up and down along the stock member.

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