JPH0873105A - Sheet treating device - Google Patents

Abstract

PURPOSE: To prevent poor arrangement due to curl of a sheet by providing a resisting member such as projections preventing the side edge of the sheet from upward slipping along a presser face on the presser face pressing the side edge of the sheet of a sheet side edge arranging member additionally provided on a compile tray. CONSTITUTION: A sheet rear end positioning member 8 and a sheet side edge positioning member respectively positioning the rear end in the discharge direction and one side in the width direction of a sheet Si discharged to a compile tray C are provided. Further sheet bundle discharge means (6, 7, etc.) discharging a sheet bundle S postprocessed by a postprocessing device 58 to a stack tray 68 is provided. A resisting member obstructing contact movement of the sheet side edge from the lower side to the upper side is arranged on a presser face pressing the side edge of the sheets Si on a sheet side edge arranging member 41. Namely, many projecting lines 43a in parallel with the upper face of the tray C are formed on the inner face of a sheet side edge presser wall 43, and a sheet side edge locking member 43b projecting inward is formed on the upper end of the presser wall 43.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet processing apparatus for processing a sheet recorded with an image discharged from an image recording apparatus such as a copying machine, and more particularly, to a compile tray for accommodating a plurality of sheets in a line. A post-processing device that performs post-processing operations (for example, binding operation, punching operation, etc.) on a sheet bundle composed of a plurality of sheets aligned in the compile tray, and a sheet bundle that discharges the sheet bundle to a stack tray. The present invention relates to a sheet processing apparatus including a discharging unit.

[0002]

2. Description of the Related Art A sheet discharged from an image recording apparatus is curled (curved) by heat or pressure applied by a fixing device in the image recording apparatus. As sheets used in the image recording apparatus, recycled paper has become widespread in recent years and tends to be diversified. Further, there is a tendency that the number of sheets in which curling (the portion where the sheet shape is curved) is likely to occur increases. A sheet processing apparatus connected to the image recording apparatus and performing post-processing (stitching processing by a stapler, punching processing by a punch, etc.) by aligning sheets sequentially discharged from the image recording apparatus, and reciprocating on a compile tray. A known alignment plate (a sheet side edge aligning member that abuts the sheet side edge and presses the opposite side sheet edge against the sheet positioning member to align the sheets) is known in the art (for example, JP-A-1-
Japanese Patent Laid-Open No. 162680 and Japanese Patent Laid-Open No. 64-34863). The sheet processing apparatus using the alignment plate,
The sheet discharged from the image recording apparatus is accommodated in a compile tray, and the sheet is pressed against a predetermined positioning member by the aligning plate to align the sheet.

[0003]

When a sheet on the compile tray is pressed against a predetermined positioning member to align it, a method of using an aligning plate (sheet side edge aligning member) that reciprocates on the compile tray is as follows. Problems arise. (A) Riding on alignment plate FIG. 14 is a view of the compile tray C as seen from the sheet discharge direction. The sheet Si curled along the direction perpendicular to the sheet discharge direction (the direction perpendicular to the paper surface) (the left-right direction in FIG. 14) is pressed against the positioning member 02 by the alignment plate 01, and the width direction (the direction perpendicular to the discharge direction). ),
When the curled sheet Si is pushed by the aligning plate 01, the side face of the aligning plate 01 slips over and rides up, causing misalignment.

(B) Stapling of stapler FIG. 15A is a view seen from the sheet discharge direction of the compile tray C, and FIG. 15B is a plan view thereof. The same elements as those in FIG. 14 are designated by the same reference numerals. The alignment of the sheet Si in the discharge direction is performed by bringing the sheet Si into contact with the sheet trailing edge positioning member 04 by the paddle 03. The stapler 06 performs a stapling operation (binding operation) on the aligned plurality of sheets Si. In this case, as can be seen from FIG. 15A,
The curled sheet Si may be caught in the sheet entrance portion of the stapler 06, resulting in misalignment.

(C) Alignment failure due to curl FIG. 16 is a view of the compiling tray C as viewed from the sheet discharge direction. The same elements as those in FIG. 14 are designated by the same reference numerals. As can be seen from FIG. 16, with respect to the curled sheet Si, the distance between the stop position of the aligning plate 01 and the positioning member 02 is only the paper width L. Alignment failure of the distance L1 occurs in the vertical direction, that is, the left-right direction in FIG.

In view of the above-mentioned circumstances, the present invention has the following problems. (O01) To reduce misalignment due to sheet curl.

[0007]

The present invention devised to solve the above problems will now be described. The elements of the present invention are to facilitate correspondence with the elements of the embodiments described later. Note that the reference numerals of the elements of the embodiments are enclosed in parentheses. Further, the reason why the present invention is described in association with the reference numerals of the embodiments described later is to facilitate understanding of the present invention and not to limit the scope of the present invention to the embodiments.

(First Invention) In order to solve the above problems,
The sheet processing apparatus (U) of the first invention of the present application is a compile tray (C) for accommodating and accommodating a plurality of sheets (Si).
A sheet trailing edge positioning member (8) for positioning the trailing edge of the sheet (Si) discharged onto the compile tray (C), and a sheet discharged onto the compile tray (C). A sheet side edge positioning member (9) for performing positioning on one side in the width direction of Si) and a sheet (Si) discharged to the compile tray (C) for the sheet trailing edge positioning member (8) and the sheet side edge. Sheet aligning means (36 to 57) to be brought into contact with the positioning member (9),
A post-processing device (58) for performing a post-processing operation on a sheet bundle (S) composed of a plurality of sheets (Si) aligned on the compile tray (C), and a post-processed sheet bundle (S) And a sheet bundle discharging means (6, 7, 16 to 31) for discharging the sheets to the stack tray (68), and the sheet aligning means (36 to 57) face the sheet side edge positioning member (9). The sheet (S) is disposed so as to face the side edge opposite to the side edge and reciprocates in the width direction.
A sheet processing apparatus (U) having a sheet side edge aligning member (41) for pressing i) against the sheet side edge positioning member (9) is provided with the following requirements: (Y01) The sheet side On the pressing surface of the edge aligning member (41) that presses the side edge of the sheet (Si), a resistance member (43) that prevents contact movement of the side edge of the sheet from below to above.
a, 43c) has been placed.

(Second Invention) Further, a sheet processing apparatus (U) of the second invention of the present application includes a compile tray (C) for accommodating a plurality of sheets (Si) and a compile tray (C). A sheet trailing edge positioning member (8) for positioning the trailing edge of the discharged sheet (Si) in the discharging direction;
The sheet side edge positioning member (9) for positioning the sheet discharged to the compile tray (C) on one side in the width direction, and the sheet (Si) discharged to the compile tray (C). Sheet aligning means (36 to 57) for contacting the trailing edge positioning member (8) and the sheet side edge positioning member (9), and the compile tray (C).
A post-processing device (5) for performing a post-processing operation on a sheet bundle (S) composed of a plurality of sheets (Si) aligned in
8) and sheet bundle discharging means (6, 7, 16) for discharging the post-processed sheet bundle (S) to the stack tray (68).
31) and the sheet aligning means (36 to 57)
Is disposed so as to face a side edge opposite to the sheet side edge facing the sheet side edge positioning member (9) and reciprocates in the width direction to move the sheet (Si) to the sheet side edge positioning member. The sheet side edge aligning member (4
In the sheet processing apparatus (U) having 1), the following requirements are provided: (Y02) The sheet side edge positioning member (9) is a sheet side that stands vertically from the upper surface of the compile tray (C). An edge contact wall (9a),
A sheet side edge guide wall (9b) extending obliquely upward from the upper end of the sheet side edge contact wall (9a) toward the sheet side edge aligning member (41).

(Third Invention) A sheet processing apparatus (U) according to the third invention of the present application includes a compile tray (C) for accommodating a plurality of sheets (Si) in an aligned manner and a compile tray (C). A sheet trailing edge positioning member (8) for positioning the trailing edge of the discharged sheet (Si) in the discharging direction;
The sheet side edge positioning member (9) for positioning the sheet discharged to the compile tray (C) on one side in the width direction, and the sheet (Si) discharged to the compile tray (C). Sheet aligning means (36 to 57) for contacting the trailing edge positioning member (8) and the sheet side edge positioning member (9), and the compile tray (C).
A post-processing device (5) for performing a post-processing operation on a sheet bundle (S) composed of a plurality of sheets (Si) aligned in
8) and sheet bundle discharging means (6, 7, 16) for discharging the post-processed sheet bundle (S) to the stack tray (68).
31) and the sheet aligning means (36 to 57)
Is disposed so as to face a side edge opposite to the sheet side edge facing the sheet side edge positioning member (9) and reciprocates in the width direction to move the sheet (Si) to the sheet side edge positioning member. The sheet side edge aligning member (4
In the sheet processing apparatus (U) having 1), the following requirements are provided: (Y03) Rotating around the axis extending in the width direction at the upper position of the compile tray (C) and the sheet side edge A sheet (Si) having a conical rotating surface having a diameter on the sheet side edge aligning member (41) side smaller than the diameter on the positioning member (9) side and moving to the sheet side edge positioning member (9) side. ) A sheet side edge guide rotating member (38) for guiding the side edge on the sheet side edge positioning member (9) side of FIG.

(Supplementary Explanation of Third Invention) In the third invention, the sheet side edge guide rotating member (38) is moved to the sheet side edge positioning member (9) side (S).
Any configuration may be used as long as it is a member having a conical rotation surface that guides the side edge on the sheet side edge positioning member (9) side of i) downward. For example, the seat side edge guide rotating member (38) can be configured by a conical roll, a paddle having a fin member that forms a conical surface when rotating, or the like.

[0012]

Next, the operation of the present invention having the above features will be described. (Operation of First Invention) In the sheet processing apparatus (U) of the first invention of the present application having the above-mentioned features, the sheet aligning means (36) is provided.
57 to 57) is a sheet trailing edge positioning member (8) for positioning the trailing edge of the sheet (Si) discharged onto the compile tray (C) and the sheet discharged onto the compile tray (C). The sheet (S) is attached to the sheet side edge positioning member (9) for positioning the sheet on one side in the width direction.
i) is brought into contact and the sheets (Si) are aligned.

At this time, the sheet aligning means (36-5)
The sheet side edge aligning member (41) of 7) reciprocates in the width direction at a position facing a side edge opposite to the sheet side edge facing the sheet side edge positioning member (9).
During this reciprocating movement, the side edge of the sheet (Si) accommodated in the compile tray (C) is pressed by the pressing surface of the sheet side edge aligning member (41) that presses the side edge of the sheet (Si). When the side edge of the sheet (Si) is curled upward, when the side edge curled upward is pressed by the pressing surface, the side edge of the sheet tries to slide upward along the pressing surface. . However, since the resistance member (43a, 43c) that prevents the contact movement of the sheet side edge from the lower side to the upper side is arranged on the pressing surface, the sheet side edge curled upward is along the pressing surface. It is prevented that the sheet slides upward and rides on the seat side edge alignment member (41).

Therefore, the sheet side edge aligning member (4
The sheet (Si) pressed against the sheet side edge positioning member (9) by 1) moves in the width direction and contacts the sheet side edge positioning member (9) to be positioned. The post-processing device (58) is a sheet bundle (S) including a plurality of sheets (Si) arranged in the compile tray (C).
Perform post-processing work on. Sheet bundle discharging means (6,
7, 16 to 31) discharge the sheet bundle (S) to the stack tray (68).

(Operation of Second Invention) Further, in the sheet processing apparatus (U) of the second invention of the present application, the sheet aligning means (36).
57 to 57) is a sheet trailing edge positioning member (8) for positioning the trailing edge of the sheet (Si) discharged onto the compile tray (C) and the sheet discharged onto the compile tray (C). The sheet (S) is attached to the sheet side edge positioning member (9) for positioning the sheet on one side in the width direction.
i) is brought into contact and the sheets (Si) are aligned. At that time, the sheet side edge aligning member (41) of the sheet aligning means (36 to 57) is at a position facing a side edge opposite to the sheet side edge facing the sheet side edge positioning member (9). , Reciprocating in the width direction. During this reciprocating movement, the side edge of the sheet (Si) accommodated in the compile tray (C) is pushed by the sheet side edge aligning member (41).
The sheet (Si) pressed toward the sheet side edge positioning member (9) by the sheet side edge aligning member (41) is
It moves in the width direction toward the sheet side edge positioning member (9). When the side edge of the moving sheet (Si) (the side edge facing the sheet side edge positioning member (9)) is curled upward and when it abuts against the sheet side edge guide, it is curled upward. The side edge rises vertically from the upper surface of the compile tray (C) while being guided downward along a sheet side edge guide wall (9b) extending obliquely upward toward the side of the sheet side edge aligning member (41). It moves toward the seat side edge contact wall (9a). As described above, when the sheet side edge curled upward is guided downward, the sheets (Si) are aligned in the width direction with the curl amount of the sheet side edge reduced. The post-processing device (58) is a sheet bundle (S) including a plurality of sheets (Si) arranged in the compile tray (C).
Perform post-processing work on. Sheet bundle discharging means (6,
7, 16 to 31) discharge the sheet bundle (S) to the stack tray (68).

(Operation of Third Invention) Further, in the sheet processing apparatus (U) of the third invention of the present application, the sheet aligning means (36).
57 to 57) is a sheet trailing edge positioning member (8) for positioning the trailing edge of the sheet (Si) discharged onto the compile tray (C) and the sheet discharged onto the compile tray (C). The sheet (S) is attached to the sheet side edge positioning member (9) for positioning the sheet on one side in the width direction.
i) is brought into contact and the sheets (Si) are aligned. At that time, the sheet side edge aligning member (41) of the sheet aligning means (36 to 57) is at a position facing a side edge opposite to the sheet side edge facing the sheet side edge positioning member (9). , Reciprocating in the width direction. During this reciprocating movement, the sheet side edge accommodated in the compile tray (C) is pushed by the sheet side edge aligning member (41).

The sheet (Si) pressed toward the sheet side edge positioning member (9) by the sheet side edge aligning member (41) moves in the width direction toward the sheet side edge positioning member (9). When the side edge of the moving sheet (Si) (the side edge facing the sheet side edge positioning member (9)) is curled upward, the sheet side edge is separated upward from the upper surface of the compile tray (C). It will move in position. Since the end portion of the post-processing device (58) and the like is arranged at a position separated upward from the upper surface of the compile tray (C), it moves at a position separated from the upper surface of the compile tray (C) as described above. The side edge of the sheet may come into contact with the end of the post-processing device (58). When they come into contact with each other, the sheets are not aligned and the post-processing work becomes impossible.

However, at the upper position of the compile tray (C), the sheet side edge guide rotating member (38) that rotates around an axis extending in the width direction is larger than the diameter of the sheet side edge positioning member (9) side. Also, due to the conical rotation surface having a small diameter on the sheet side edge aligning member (41) side, the side edge curled above the sheet (Si) moving to the sheet side edge positioning member (9) side (the sheet The side edge on the side edge positioning member (9) side is guided downward. In this case, it is possible to avoid contact between the end portion of the post-processing device (58) arranged at a position apart from the upper surface of the compile tray (C) and the side edge of the sheet curled upward. In addition, the sheets are aligned in the width direction with the curl amount on the side edges of the sheets reduced.
The post-processing device (58) performs a post-processing operation on the sheet bundle (S) composed of a plurality of sheets (Si) arranged on the compile tray (C). The sheet bundle discharging means (6, 7, 16 to 31) discharges the sheet bundle (S) to the stack tray (68).

[0019]

EXAMPLES Examples of the present invention will now be described with reference to the drawings, but the present invention is not limited to the following examples. In order to facilitate understanding of the explanation below,
Cartesian coordinate axes X-axis, Y-axis, and Z-axis are defined in the directions of arrows X, Y, and Z that are orthogonal to each other in the drawing, and the arrow X direction is the front, the arrow Y direction is the left, and the arrow Z direction is the up. In this case, the direction opposite to the X direction (front) (-X direction, that is,
Anti-X direction) is backward, Y direction (left side) is in the opposite direction (-Y direction, i.e., anti-Y direction) is right direction, and Z direction (upward) is in the opposite direction (-Z direction, i.e., anti-Z direction) is downward direction. Becomes Also,
The front (X direction) and the rear (-X direction) are referred to as the front-back direction or the X-axis direction, and the left (Y direction) and the right (-Y direction) are referred to as the left-right direction or the Y-axis direction, The upper direction (Z direction) and the lower direction (-Z direction) are referred to as the vertical direction or the Z-axis direction. Furthermore, in the figure, "○" is put in "○".
The one with "" means an arrow from the back of the paper to the front, and the one with "x" in "○" means an arrow from the front to the back of the paper.

(Embodiment 1) FIG. 1 is a longitudinal sectional view of Embodiment 1 of a sheet processing apparatus of the present invention, showing a state in which a discharge pinch roller is moved to an open position (position apart from the upper surface of a sheet bundle). Is. FIG. 2 is a vertical cross-sectional view of the first embodiment, showing a state in which the discharge pinch rollers have moved to a pressure contact position (a position in which they are in pressure contact with the upper surface of the sheet bundle). FIG. 3 shows the first embodiment.
FIG. 3 is a perspective view of the compiling tray of FIG. FIG. 4 is a plan view of the compile tray and sheet aligning means of the first embodiment. FIG. 5 is a right side view (view seen from the -Y side) of the compile tray of the first embodiment as seen from the arrow V in FIG. FIG. 6 is a plan view of the pinch roller support arm and its rotation drive mechanism of the first embodiment. FIG. 7 is an explanatory diagram of the sheet trailing edge aligning member of the first embodiment. FIG. 8 is an explanatory diagram of the conical paddle of the first embodiment.
FIG. 9 is an explanatory diagram of the rotary brush of the first embodiment. Figure 10
4 is an explanatory view of the sheet side edge aligning member of the first embodiment, and FIG.
6 is a sectional view taken along line XX of FIG. FIG. 11 shows XI- of FIG.
It is a XI line sectional view. FIG. 12 is an exploded perspective view of the sheet side edge aligning member and its related components according to the first embodiment.

In FIGS. 1 and 2, the sheet processing apparatus U has a surface connected to the copying machine F (the left side surface of the sheet processing apparatus in FIGS. 1 and 2) on which the sheet Si discharged from the copying machine F is carried. A carry-in port 1 is provided. A sheet carry-in roller 2 is arranged at the sheet carry-in entrance 1. The end of the sheet carry-in path 3 connected to the sheet carry-in roller 2 (in FIG. 1,
The carry-in path end roller 4 is arranged at the right end). The sheet Si carried in from the sheet carry-in port 1 is carried into the compile tray C from the carry-in path end roller 4.
The compile tray C is arranged so as to be inclined so as to rise outward (to the right in FIG. 1). At the right end (the end on the −Y side) of the compile tray C, a rotary shaft 6 and three discharge drive rollers 7 fixed to the rotary shaft 6 are arranged. The rotating shaft 6 is rotatably supported by the front and rear frames U1 and U2 (see FIG. 4) of the sheet processing apparatus U, and a discharging drive motor (not shown) disposed on the rear side (-X side) of the frame U2. It is designed to be driven to rotate.

Next, the compile tray C will be described with reference to FIGS. At the left end (Y side end) of the compile tray C, three sheet rear end positioning walls (sheet rear end positioning members) 8 bent upward are formed at intervals in the front-rear direction (X axis direction). ing. The sheet rear end positioning wall 8 is a sheet rear end contact wall 8a that stands vertically from the upper surface of the compile tray C, and obliquely upward from the upper end of the sheet rear end contact wall 8a toward the center of the compile tray C. It has an extending sheet rear end guide wall 8b. The sheet rear end guide wall 8b guides the sheet Si rear end downward when the rear end of the sheet Si moving toward the sheet rear end positioning wall 8 for aligning the sheets is curled upward. Then, it has a function of reducing the curl amount.

Further, at the front end (X side end) of the compile tray C, one sheet side edge positioning wall (sheet side edge positioning member) 9 bent upward is formed. This sheet side edge positioning wall 9 is, as shown in FIG.
A sheet side edge contact wall 9a that rises vertically from the upper surface of the compile tray C, and from the upper end of the sheet side edge contact wall 9a toward the center side of the compile tray C (the side of the sheet side edge aligning member 41 described later). It has a sheet side edge guide wall 9b extending obliquely upward. As shown in FIG. 4, a plurality of (three) notches are provided in the right side portion (the -Y side portion) of the compile tray C for disposing the discharge driving roller 7. Further, as can be seen from FIG. 3, both side portions of the cutout portion are bent downward.

A lower bent portion 11 (see FIG. 3) is provided at the rear end portion (-X side end portion) of the compile tray C, and the right end portion (-Y side end portion) thereof is the discharge drive roller. It is rotatably supported by a rotary shaft 6 of 7. Also,
A bracket 12 is fixed to a lower surface (a lower surface of a portion where the sheet side edge positioning wall 9 is provided) of a front end portion (X-side end portion) of the compile tray C at a position forming a pair with the downward bending portion 11. The right end portion (-Y side end portion) thereof is rotatably supported by the rotation shaft 6 of the discharge driving roller 7. Therefore, the compile tray C is rotatable around the rotary shaft 6. Also, compile tray C
Is provided with a guide groove 13 extending in the front-rear direction (X-axis direction) on the rear side (-X side), and a pulley mounting portion 14 (see FIGS.
5) is provided.

Next, the rotary shaft 6 of the compile tray C
A rotation mechanism for rotation and a discharge mechanism that is movable between a pressure contact position (see FIG. 2) that is in pressure contact with the discharge drive roller 7 from above and an open position (see FIG. 1) apart from the discharge drive roller 7. The moving mechanism of the pinch roller 16 will be described.
In FIGS. 1 and 2, the arm support shaft 17 and the arm drive output shaft 1 arranged above the carry-in path terminating roller 4.
8 rotates at the position shown in FIGS. In FIG.
The arm support shaft 17 is rotatably supported by the frames U1 and U2 of the sheet processing apparatus U. Two pinch roller support arms 19 are fixed to the arm support shaft 17. The pinch roller support arm 19 is composed of a leaf spring, and the discharge pinch roller 16 is rotatably supported at its tip.

An upper urging arm 21 as an upper urging member is fixed to the front end portion (X side end portion) of the arm support shaft 17. The upper biasing arm 21 is rear (-X direction)
It has a pin 21a (see FIGS. 3 and 6) protruding to the outside.
The pin 21a is always pulled upward by a tension spring 22. Therefore, the upward biasing arm 21 is constantly acted on by the tension spring 22 in the upward direction about the arm support shaft 17. In FIG. 6, the rotation output of the arm driving motor 23 is transmitted to the arm driving output shaft 18 via the reduction gear box 24. A rotational position detecting disc 26 is mounted on the arm driving output shaft 18. The rotational position detecting disc 26 is
As can be seen from FIGS. 1 and 2, a cutout portion 26a is formed in a part of the circumference.
Is provided.

At a position adjacent to the outer peripheral portion of the rotational position detecting disk 26, there are optical sensors 27, which are separated by 180 °.
28 are arranged. Each of the optical sensors 27, 28 includes a light emitting element 27a, 28a and a light receiving element 27b, 28b, respectively.
It consists of Then, as shown in FIG. 6, the light emitting element and the light receiving element are arranged with the disc 26 sandwiched from the front and the back (X-axis direction). Each of the optical sensors 27 and 28 is configured to be turned on when it corresponds to the position of the cutout portion 26a of the rotation position detecting disk 26. As can be seen from FIG. 1, when the optical sensor 28 is turned on, the pinch roller support arm 19 rotates upward, and the compile tray C also rotates upward. Further, as can be seen from FIG. 2, when the optical sensor 27 is on, the pinch roller support arm 19 rotates downward, and the compile tray C also rotates downward.

The rear surface (-X
The side surface) is provided with a short plate 29 (see FIG. 3) extending in the radial direction from the center of rotation. Plate 2
In FIG. 6, reference numeral 9 extends in a direction perpendicular to the plane of the drawing, and rotates together with the rotational position detecting disc 26. A pressing pin (pressing member) 31 projects rearward from the tip of the plate 29. The pressing pin 31 is provided on the plate 29.
It is arranged so as to move in a circle in accordance with the rotation, and to push the upper surface of the upper urging arm 21 downward when the lower position shown in FIG. 2 is reached. Therefore, although the upper biasing arm 21 is rotated to the upper position by the tension spring 22 in the state of FIG. 1, the pressing pin 31 is moved to the lower position shown in FIG. 2 as the plate 29 is rotated. When it is done, it is pushed down and rotates downward against the force of the tension spring 22.

The rotation position of the arm driving motor 23 is controlled by an arm rotation control device (not shown) composed of a microcomputer. The rotary shaft 6, the discharge drive roller 7 fixed to the rotary shaft 6, a discharge drive motor (not shown) for rotationally driving the rotary shaft 6, a control device (not shown) for the discharge drive motor, and reference numerals 16 to 31. From the above described elements and the arm rotation control device (not shown) and the like, sheet bundle discharging means (elements denoted by reference numerals 6, 7, 16-31 and the like and a combination of elements for driving those elements) are provided. It is configured. The sheet bundle discharging means (6, 7, 16 to 31) presses the discharge pinch roller 16 at a pressure contact position (presses the discharge drive roller 7 from above).
(The position shown in FIG. 2) and the sheet bundle S is sandwiched between the ejection drive roller 7 and the ejection pinch roller 16,
By driving the discharging drive motor (not shown) to rotationally drive the discharging drive roller 7, the sheet bundle S is discharged to a stack tray described later.

The upper biasing arm 21 and the compile tray C are connected by a connecting member 32. That is, the lower end of the connecting member 32 is rotatably connected to the connecting pin 12a (see FIGS. 4 and 5) protruding forward from the bracket 12 (see FIGS. 3 to 5) fixed to the compile tray C. . Further, a long hole 32a (see FIG. 1) having a certain length extending vertically is formed at the upper end of the connecting member 32, and the pin 21a of the upper biasing arm 21 is engaged with the long hole 32a. There is. Further, as shown in FIGS. 1 and 2, the downward rotation position of the compile tray C is regulated by a stopper 33 that abuts the lower end of the bracket 12.

As can be seen from the above description, since the pressing pin 31 is in the upper position in FIG. 1, the upper biasing arm 21 is held in the raised position by the tension spring 22. At this time, the pin 21a of the upper biasing arm 21
Engages with the upper end of the elongated hole 32a of the connecting member 32 to pull the connecting member 32 upward. At this time, the compile tray C is rotating upward. In this state, as shown in FIG. 1, the lower end of the bracket 12 is lifted from the stopper 33. Further, the discharge pinch roller 16 is held in the raised open position. When the pressing pin 31 moves downward and presses the upper surface of the upper urging arm 21, the upper urging arm 21 rotates downward against the force of the tension spring 22. At this time, the pin 21a also moves downward. At this time, the connecting member 32 pulled up by the pin 21a is pulled downward by the weight of the compile tray C, and moves downward with the upper end of the elongated hole 32a engaged with the pin 21a. With the downward movement of the connecting member 32, the compile tray C
Also rotates downward.

When the lower end of the bracket 12 contacts the stopper 33 (see FIGS. 2 and 5), the compile tray C and the connecting member 32 stop at that position. When the pressing pin 31 (see FIG. 3) moves further downward in this state, the upper biasing arm 21 rotates further downward. At that time, the pin 21a of the upper urging arm 21 separates from the upper end of the elongated hole 32a of the connecting member 32 and moves downward while engaging with the elongated hole 32a. The tray of this Example 1
The arm interlocking mechanism includes an arm support shaft 17 for supporting the pinch roller support arm 19, an upper biasing arm 21, a pin 21a, a tension spring 22, and a connecting member 3 fixed to the arm support shaft 17.
2, a long hole 32a engaged with the pin 21a, a bracket 12 fixed to the compile tray C, the bracket 1
2 and the connecting member 32. The connecting pin 12a and the like are connected to each other.

Next, referring to FIGS. 1, 2, 4, 5, 7 to 12,
Sheet aligning means for aligning the rear end and side edges of the sheets Si accommodated in the compile tray C will be described.
The sheet aligning means is the sheet Si in the compile tray C.
Is provided with a sheet rear edge aligning means for bringing the sheet rear edge aligning wall 8 into contact with the sheet side edge aligning wall 9. Next, the sheet trailing edge aligning means will be described. The trailing edge aligning member support shaft 36 shown in FIGS. 1 and 2 is disposed slightly above the sheet trailing edge positioning wall 8 of the compile tray C. As shown in FIG. 5, the rear end alignment member support shaft 36 is rotatably supported by a frame U3 and a frame U2 arranged above the compile tray C. The rear end aligning member support shaft 36 is connected to the frame U2.
A rear end aligning member drive motor (sheet rear end aligning member driving device) (not shown) arranged rearward is rotationally driven.

As shown in FIG.
As shown in FIG. 5, three sheet rear end aligning members 37 that are arranged at intervals in the front-rear direction (X-axis direction) are supported (fixed). The sheet trailing edge aligning member 37 has four flexible sheet shifting members 37a as shown in FIG. As can be seen from FIG. 7, the four sheet shifting members 37a extend in the tangential direction at positions displaced by θ (= 90 °) in the circumferential direction of the cylindrical surface. The value of θ is 90
It is possible to adopt values such as 120 °, 72 °, and 60 ° as well as 90 °. Further, the sheet shifting member 37a can be arranged in a direction extending in the radial direction from the center of rotation.

A conical paddle (rotating member for guiding the side edge of the seat) 38 having the shape shown in FIGS. 4, 5 and 8 is supported (fixed) on the front end portion of the rear end aligning member support shaft 36. The conical paddle 38 is a sheet side edge guide rotating member that guides downward a side edge of the sheet Si that moves toward the sheet side edge positioning wall 9 side (X direction) on the side of the sheet side edge positioning wall 9 side. At the upper position of the tray C, it has a conical rotation surface that rotates around the rear end aligning member support shaft 36 extending in the width direction and has a diameter that increases toward the sheet side edge positioning wall 9 side. That is,
As shown in FIG. 8, the conical paddle 38 has six triangular fin members 38a extending in the radial direction at positions displaced by 60 ° in the circumferential direction of the cylindrical surface, and the outer edge of the fin member 38a is rotated. Sometimes it forms a conical surface.
The conical paddle 38 has a function of directing the upwardly curled portion of the sheet Si downward when the upwardly curled sheet Si is moved in the X direction (front).

A rotary brush 39 having the shape shown in FIGS. 4 and 5 is supported (fixed) on the rear end portion (-X side end portion) of the rear end aligning member support shaft 36. This rotating brush 39
As shown in FIG. 9, has a plurality of linear members extending in the radial direction at positions displaced by 60 ° in the circumferential direction of the cylindrical surface. The rotating brush 39 has a function of pressing down the curl of the end portion (the end portion on the −X side) of the large size sheet. The means for pressing the sheet Si against the sheet trailing edge positioning wall 8, that is, the sheet trailing edge aligning means (36-3) of the first embodiment from the elements indicated by the reference numerals 36-39.
9) is configured. The conical paddle 38 and the rotating brush 39 can be omitted.

Next, the sheet Si on the compile tray C is
The sheet side edge aligning means for contacting the sheet side edge positioning wall 9 with each other will be described. The sheet side edge alignment member 41 shown in FIGS.
4) is arranged on the front side (X side) of the compile tray C, whereas it is arranged on the rear side (−X side).
As shown in FIGS. 4, 5 and 10, the sheet side edge aligning member 41 includes a sheet placing portion 42 arranged along the upper surface of the compile tray C and a rear end (−) of the sheet placing portion 42.
Seat side edge pressing wall 43 rising vertically from the X side end portion)
And have. On the inner surface of the sheet side edge pressing wall 43 (that is, the pressing surface that presses the sheet Si side edge), a large number of projections 43a parallel to the upper surface of the compile tray C (FIG.
Reference) is formed, and a laterally long sheet side edge locking member 43b protruding inward is formed at the upper end. The ridge 43a and the seat side edge locking member 43b
Prevents the side edge of the curled sheet Si from sliding upward along the pressing surface or riding on the sheet side edge aligning member 41. The sheet side edge alignment member 41
In order to reciprocate in the width direction (X axis direction) of the sheet Si along the guide groove 13 (see FIG. 4) on the compile tray C, pulleys 44, 45 and a belt 46 (on the lower surface of the compile tray C). 4 and 5) are arranged. As can be seen from FIG. 5, the pulley 44 is configured to be rotationally driven in both forward and reverse directions by the belt driving motor 47.

In FIGS. 10 to 12, two guided pins 51, 51 project downward from the lower surface of the sheet placing portion 42. The guided pin 51 penetrates the guide groove 13 of the compile tray C and extends downward. A cylindrical collar 52 made of plastic is fitted to the guided pin 51. And the guided pin 5
1 is the upper wall 53a of the L-shaped bracket 53.
An E-clip 54 is attached to the distal end of the through-hole formed in the above to prevent it from coming off. As a result, the sheet side edge aligning member 41 is integrally connected to the bracket 53.

As shown in FIG. 11, the connecting plate 56 for connecting the bracket 53 connected to the seat side edge aligning member 41 to the belt 46 has a protruding portion 56a at the bottom. The protruding amount of the protruding portion 56a is set to be slightly smaller than the same value as the thickness of the belt 46. As shown in FIG. 11, the bracket 53 and the connecting plate 56 are connected by screwing a screw 57 penetrating the protruding portion 56 a into a screw hole of the bracket 56 while sandwiching the belt 46. There is. Means for pressing the sheet Si against the sheet side edge positioning wall 9, that is, sheet side edge aligning means (41 to 57) of the first embodiment from the elements indicated by the reference numerals 41 to 57.
Is configured. Then, the sheet trailing edge aligning means (36 to 39) and the sheet side edge aligning means (41 to 5).
The sheet aligning means (36 to 57) is composed of 7).

A stapler (post-processing device) shown in FIGS.
58 is a sheet S aligned on the compile tray C
Used to close the bundle S of i. This stapler 5
As shown in FIG. 4, 8 is arranged at the front (X side) and left (Y side) corners of the compile tray C. 1 and 2, a stack tray support frame 61 is rotatably supported by a pin 62 below the ejection drive roller 7. This stack tray support frame 61
Are fixed to a frame (not shown) of the sheet processing apparatus U by screws 63 at a predetermined rotation angle. The stack tray support frame 61 includes pulleys 64 arranged vertically,
A belt 66 is hung between 64 (the lower pulley 64 is not shown). A slider 67 is fixed to the belt 66. Therefore, the slider 67 is the belt 66.
When it is driven to rotate, it moves up and down. A stack tray 68 is rotatably connected to the slider 67 around a pin 69, and is fixed by a screw 71 at a predetermined rotation angle.

(Operation of First Embodiment) Next, the operation of the first embodiment having the above-mentioned structure will be described. When the arm rotation control device (not shown) configured by a microcomputer that controls the rotation of the arm driving motor 23 (see FIG. 6) rotates the arm driving output shaft 18 and rotates the plate 29 upward. The pressing pin (pressing member) 31 provided at the tip of the plate 29 moves upward,
The upper urging arm (upper urging member) 21 urged upward by is pulled upward by the tension spring 22. At this time, the upper urging arm 21 rotates together with the arm support shaft 17. At this time, the pinch roller support arm 19 fixedly supported by the arm support shaft 17 rotates upward. In the first embodiment, the pressing pin (pressing member) 3
As a means for interlocking 1 and the pinch roller support arm 19, a configuration is adopted in which the pressing pin is first driven and the pinch roller support arm 19 is interlocked with the movement of the pressing pin 31. It is also possible to adopt a configuration in which the arm support shaft 17 is driven to rotate and other members are interlocked with the rotation of the arm support shaft 17.

In FIGS. 1, 2 and 3, when the upper urging arm 21 rotates upward in conjunction with the pinch roller supporting arm 19, the pin 21a rises. When the pin 21a moves up by a predetermined distance and engages with the upper end of the elongated hole 32a of the connecting member 32, the connecting member 32 also moves up as the pin 21a moves up. At this time, the compile tray C is pulled upward by the upward urging arm 21 and the connecting member 32, and rotates upward around the rotation shaft 6 of the ejection drive roller 7. The state at this time is the state shown in FIG. In the state shown in FIG. 1, the sheet Si is discharged to the compile tray C. The sheet Si discharged onto the compile tray C is subjected to the sheet rear end positioning wall (sheet rear end positioning member) 8 and the sheet side edge positioning wall (sheet side edge positioning member) 9 by the sheet aligning means (36 to 57).
Are brought into contact with and aligned.

The contact of the sheet Si with the sheet trailing edge positioning wall 8 is performed by the sheet trailing edge aligning means (36 to 39) supported independently of the compile tray C. The sheet trailing edge aligning member 37 of the sheet trailing edge aligning means (36 to 39) is composed of a rotating member having a plurality of sheet shifting members 37a capable of intermittently contacting the sheets Si accommodated in the compile tray C. . When the sheet trailing edge aligning member 37 is rotationally driven by the trailing edge aligning member drive motor (sheet trailing edge aligning member driving device) (not shown), the sheet aligning member 37a is placed on the upper surface of the sheet Si accommodated in the compile tray C. The sheet Si is brought into contact with the sheet rear end positioning wall 8 by intermittent frictional contact. When the rear end of the sheet Si moving toward the sheet rear end positioning wall 8 is curled upward, the rear end of the sheet Si moves from the upper end of the sheet rear end contact wall 8a to the central portion side of the compile tray C. Since it is guided downward by the sheet rear end guide wall 8b extending obliquely upward,
Sheets are aligned while the curl amount is reduced.

The sheet side edge aligning member 41 of the sheet side edge aligning means is driven by the belt driving motor 47 (see FIG. 5), the belt 46 and the like, and is in a standby position separated from the sheet side edge according to the size of the sheet Si. And the sheet aligning position that presses the sheet, reciprocates in the width direction (X-axis direction) to press the side edge of the sheet Si accommodated in the compile tray C against the sheet width direction positioning wall 9. The inner surface of the sheet side edge pressing wall 43 of the sheet side edge aligning member 41 (that is,
Since a large number of ridges 43a are provided on the pressing surface) and a sheet side edge locking member 43b is provided on the upper end, when the curled side edge of the sheet Si is pressed, the side edge is It is possible to prevent the vehicle from sliding upward or riding along the seat side edge pressing wall 43. When the side edge of the sheet Si that is pushed by the sheet side edge aligning member 41 and moves toward the sheet side edge positioning wall 9 is curled upward, the side edge of the sheet Si is the sheet rear end contact wall 9a. The sheet is guided downward by the sheet side edge guide wall 9b extending obliquely upward from the upper end toward the central portion of the compile tray C, so that the sheets are aligned while the curl amount is reduced. The portion of the side edge of the sheet Si curled upward toward the stapler (post-processing device) 58 is directed downward by the conical paddle 38. Therefore, the side edge of the sheet curled upward is the stapler 5
It is possible to prevent a situation in which the stapling operation becomes impossible due to the contact with the end portion of No. 8.

In the trailing edge aligning member support shaft 36 and the sheet trailing edge aligning member 37 which are rotationally driven by the trailing edge aligning member drive motor (not shown), the sheet side edge aligning member 41 causes the side edge of the sheet Si to move toward the sheet. During the period in which the sheet is moved to the sheet side edge aligning position to be pressed against the side edge positioning wall 9, the sheet trailing edge aligning member 37 is rotated so that the sheet shifting member 37a does not come into contact with the upper surface of the sheet bundle S. During the period in which the sheet side edge aligning member 41 moves to the sheet side edge aligning position, the sheet rear edge aligning member 37.
As a method for rotationally driving the sheet trailing edge aligning member 37 so that a period in which the sheet shifting member 37a does not contact the upper surface of the sheet bundle S occurs, for example, the following method can be adopted.

As can be seen from FIGS. 1 and 7, since the sheet trailing edge aligning member 37 of this embodiment has four flexible sheet aligning members 37a, it does not contact the upper surface of the sheet bundle S during one rotation. The period occurs 4 times. Therefore, the length of time that the sheet side edge aligning member 41 stops at the sheet side edge aligning position is set to 1/4 by the sheet rear edge aligning member 37.
By setting the time to rotate or more, the sheet trailing edge aligning member 37 does not contact the upper surface of the sheet bundle S while the sheet side edge aligning member 41 is stopped at the sheet side edge aligning position. A period can be generated. That is, by rotating the sheet trailing edge aligning member 37 at a predetermined speed or more, the sheet trailing edge aligning member 37 causes the sheet bundle S to move during the period in which the sheet side edge aligning member 41 stops at the sheet side edge aligning position. A period in which the upper surface is not in contact can be generated.

The sheet Si whose sheet side edge is pressed against the sheet side edge positioning wall 9 by the sheet side edge aligning member 41 is a period in which the sheet shifting member 37a of the sheet trailing edge aligning member 37 does not contact the upper surface of the sheet bundle S. It moves in the width direction (that is, in the direction of the sheet side edge positioning wall 9).

When the amount of sheets accommodated in the compile tray C increases, the upper surface of the sheet bundle S on the compile tray C rises, and the contact pressure of the sheet shifting member 37a on the upper surface of the sheet bundle S increases. An arm rotation control device (not shown) that controls the rotation of the arm driving motor 23 (see FIG. 6) in order to prevent damage to the sheet Si or unevenness of the sheet Si due to the contact pressure becoming too large. Output shaft for arm drive 1
Rotate 8 to rotate plate 29 downward. A pressing pin (pressing member) 31 provided at the tip of the plate 29
Moves downward and pushes downward the upper biasing arm (upper biasing member) 21 biased upward by the tension spring 22 against the force of the tension spring 22. At this time, the upper biasing arm 21 rotates downward together with the arm support shaft 17. At this time, the pinch roller support arm 19 fixedly supported by the arm support shaft 17 rotates downward.

The downward rotation amount of the upper biasing arm 21, that is, the rotation amount of the arm driving motor 23 is determined by the number of sheets Si accommodated in the compile tray C (the number of sheets discharged to the compile tray C). Can be determined according to. Further, the downward rotation amount can be determined by detecting the distance from the sheet trailing edge aligning member 37 to the upper surface of the sheet bundle S on the compile tray C. An ultrasonic distance sensor can be used as the distance sensor.

As described above, the compile tray C is pulled upward by the tension spring 22, the upper biasing arm 21, the connecting member 32, etc., and is rotated upward about the rotary shaft 6 of the ejection drive roller 7. Since it has moved, it pivots downward according to the downward movement amount of the upper biasing arm 21. That is, when the pinch roller support arm 19 is rotated downward by the arm driving motor 23, the compile tray C is provided with the tray / arm interlocking mechanism (reference numeral 12,
12a, 17, 19, 21, 21, 21a, 22, 32, 32a
It is rotated downward by a mechanism composed of elements indicated by (1). The downward rotation of the compile tray C opens the gap between the upper surface of the sheet bundle S on the compile tray C and the sheet trailing edge aligning member 37, and maintains an appropriate gap. That is, when the sheet trailing edge aligning member 37 rotates in a state in which the appropriate spacing is maintained, there is a period in which the sheet shifting member 37a intermittently contacts the upper surface of the sheet bundle S and does not contact the upper surface of the sheet bundle S. Occurs. A new sheet Si is discharged to the compile tray C in the state where the interval is properly maintained, and sheet alignment is performed in the same manner as described above.

When the sheet Si is further discharged onto the sheet bundle S on the compile tray C and the thickness of the sheet bundle S further increases, the arm driving motor 23 is driven again. Then, the pressing pin 31 is moved downward. At this time, the pin 21a of the upper biasing arm 21
Since the connecting member 32 that has been lifted by
The compile tray C moves downward in the same manner as described above. When the lower end of the bracket 12 fixed to the compile tray C contacts the stopper 33, the compile tray C and the connecting member 32 do not move downward any further. In this case, when the pressing pin 31 is moved further downward, the pressing pin 31 is moved to the elongated hole 32a of the connecting member 32.
And moves downward while engaging with the slot 32a. That is, in this case, even if the pressing pin 31 is lowered, the connecting member 32 and the compile tray C are not connected to the stopper 3.
It is held in a stopped state by 3. Therefore, in that state, more sheets Si cannot be accommodated in the compile tray C.

A predetermined number of sheets S on the compile tray C
After accommodating and aligning i, the arm driving motor 23 is rotationally driven to lower the pinch roller support arm 19 and the pressing pin 31 to the position shown in FIG. That is, the sheet bundle S on the compile tray C and the ejection driving roller 7 is pressed against the ejection pinch roller 16 from above. That is, the sheet bundle discharging means (6, 7, 16-
31), when performing the post-processing work, the pinch roller support arm 19 is rotated by the arm rotation control device to move the discharge pinch roller 16 to the open position shown in FIG. 1 (away from the upper surface of the sheet bundle). Position) to the pressure contact position shown in FIG. 2 (the position where the upper surface of the sheet bundle is in pressure contact).
In the state shown in FIG. 2, a stapler (post-processing device) 58
Performs stapling (post-processing work) on the sheet bundle S composed of a plurality of sheets Si aligned on the compile tray C.

Further, the sheet bundle discharging means (6, 7, 1)
6 to 31), the pinch roller support arm 19 is shown in FIG.
In the state shown in (1), the rotation shaft 6 of the discharge driving roller 7 is rotated to discharge the sheet bundle S onto the stack tray 68.

(Embodiment 2) Next, Embodiment 2 of the sheet processing apparatus of the present invention will be described with reference to FIG. In the description of the second embodiment, constituent elements corresponding to those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. The second embodiment differs from the first embodiment in the following points, but is configured similarly to the first embodiment in other points. (S01) The inner surface (that is, the pressing surface) of the sheet side edge pressing wall 43 of the sheet side edge aligning member 41 is provided with the ridge 43a in the first embodiment, whereas the high friction coefficient is provided in the second embodiment. The point where the friction pad 43c having the above is attached. That is, the resistance member provided on the pressing surface (the inner surface of the sheet side edge pressing wall 43) was formed by the ridge 43a in the first embodiment, whereas in the second embodiment, the friction pad 4 is used.
The point formed by 3c.

(Operation of Embodiment 2) The resistance member provided on the pressing surface is formed by a sheet-like friction pad 43c having a high friction coefficient, which is adhered to the sheet side edge pressing wall 43 of the sheet side edge aligning member 41. Since it is formed, the side edge of the sheet Si curled upward is pressed against the friction pad 43c. Therefore, the side edge of the sheet Si pressed by the pressing surface of the sheet side edge aligning member 41 (the inner surface of the sheet side edge pressing wall 43) is moved along the pressing surface (friction pad) by the friction pad 43c having the high friction coefficient. It is prevented that the sheet slides upward and rides on the seat side edge alignment member 41. That is, the same operation as that of the first embodiment is achieved.

(Modifications) Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-mentioned embodiments, but is within the scope of the gist of the present invention described in the claims. Thus, various changes can be made. A modified embodiment of the present invention is illustrated below.

[0057]

The above-described sheet processing apparatus of the present invention can achieve the following effects. (E01) Misalignment due to sheet curl can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a sheet processing apparatus according to a first embodiment of the present invention, showing a state in which a discharge pinch roller has moved to an open position (a position away from the upper surface of a sheet bundle).

FIG. 2 is a vertical cross-sectional view of the first embodiment, showing a state in which a discharge pinch roller is moved to a pressure contact position (a position where it is in pressure contact with the upper surface of the sheet bundle).

FIG. 3 is a perspective view of a compile tray and its rotating mechanism of the first embodiment.

FIG. 4 is a plan view of a compile tray and a sheet aligning unit according to the first embodiment.

5 is a right side view of the compile tray of the first embodiment as seen from the arrow V in FIG. 4. FIG.

FIG. 6 is a plan view of the pinch roller support arm and the rotation drive mechanism thereof according to the first embodiment.

FIG. 7 is an explanatory diagram of a sheet shifting member of the sheet trailing edge aligning member according to the first embodiment.

FIG. 8 is an explanatory diagram of a conical paddle of the first embodiment.

FIG. 9 is an explanatory diagram of a rotating brush according to the first embodiment.

FIG. 10 is an explanatory view of the sheet side edge alignment member of the first embodiment, and is a sectional view taken along line XX of FIG.

11 is a sectional view taken along line XI-XI of FIG.

FIG. 12 is an exploded perspective view of a sheet side edge aligning member according to the first embodiment.

FIG. 13 is an explanatory diagram of the second embodiment of the present invention, and is a diagram showing another configuration example of the sheet side edge aligning member different from the first embodiment.

FIG. 14 is an explanatory diagram of a problem that occurs when aligning curled sheets, as viewed from the sheet discharge direction of the compile tray C.

15A and 15B are explanatory views of another problem that occurs when aligning curled sheets, FIG. 15A is a view seen from the sheet discharge direction of the compile tray, and FIG. 15B is a plan view thereof.

FIG. 16 is an explanatory diagram of another problem that occurs when the curled sheets are aligned, as viewed from the sheet discharge direction of the compile tray.

[Explanation of symbols]

C ... Compile tray, Si ... Sheet, S ... Sheet bundle,
U ... Sheet processing device, 6 ... Rotating shaft, 7 ... Ejection drive roller, 8 ... Sheet rear end positioning member (sheet rear end positioning wall), 9 ... Sheet side edge positioning member (sheet side edge positioning wall), 9a ... Sheet side edge contact wall, 9b ... sheet side edge guide wall, 16 ... ejection pinch roller, 19 ... pinch roller support arm, 21 ... upper biasing member (upper biasing arm),
22 ... tension spring, 31 ... pressing member (pressing pin), 32 ...
Connecting member, 37 ... Sheet rear end aligning member, 37a ... Sheet shifting member, 38 ... Sheet side edge guide rotating member (conical paddle), 41 ... Sheet side edge aligning member, 43a ... Resistance member (convex line), 43c ... Friction pad, 58 ... Post-processing device (stapler), 68 ... Stack tray,

Claims (3)

[Claims] 1. A compile tray for accommodating a plurality of sheets in an aligned manner, a sheet trailing end positioning member for positioning a trailing end of a sheet discharged onto the compile tray, and a sheet discharged onto the compile tray. A sheet side edge positioning member for positioning the sheet on one side in the width direction, sheet aligning means for bringing the sheet discharged to the compile tray into contact with the sheet trailing edge positioning member and the sheet side edge positioning member, A post-processing device for performing a post-processing operation on a sheet bundle composed of a plurality of sheets aligned on a compile tray; and a sheet bundle discharging means for discharging the post-processed sheet bundle to a stack tray. The aligning means is disposed so as to face a side edge opposite to the sheet side edge facing the sheet side edge positioning member and to move in the width direction. A sheet processing apparatus having a sheet side edge aligning member that moves back and presses the sheet against the sheet side edge positioning member, wherein the sheet processing apparatus has the following requirements: (Y01) the sheet side edge aligning member A resistance member that prevents contact movement of the side edge of the sheet from below to above is disposed on the pressing surface of the member that presses the side edge of the sheet. 2. A compile tray that accommodates a plurality of sheets aligned, a sheet trailing edge positioning member that positions a trailing edge of a sheet discharged onto the compile tray in a sheet discharge direction, and a sheet discharged onto the compile tray. A sheet side edge positioning member for positioning the sheet on one side in the width direction, sheet aligning means for bringing the sheet discharged to the compile tray into contact with the sheet trailing edge positioning member and the sheet side edge positioning member, A post-processing device for performing a post-processing operation on a sheet bundle composed of a plurality of sheets aligned on a compile tray; and a sheet bundle discharging means for discharging the post-processed sheet bundle to a stack tray. The aligning means is disposed so as to face a side edge opposite to the sheet side edge facing the sheet side edge positioning member and to move in the width direction. A sheet processing apparatus having a sheet side edge aligning member that moves backward and presses the sheet against the sheet side edge positioning member, characterized in that the sheet processing apparatus has the following requirements (Y02) The member has a sheet side edge abutting wall that rises vertically from the upper surface of the compile tray, and a sheet side edge guide wall that extends obliquely upward from the upper end of the sheet side edge abutting wall toward the sheet side edge aligning member. thing. 3. A compile tray that accommodates a plurality of sheets aligned, a sheet trailing edge positioning member that positions a trailing edge of a sheet discharged to the compile tray in a sheet discharge direction, and a sheet discharged to the compile tray. A sheet side edge positioning member for positioning the sheet on one side in the width direction, sheet aligning means for bringing the sheet discharged to the compile tray into contact with the sheet trailing edge positioning member and the sheet side edge positioning member, A post-processing device for performing a post-processing operation on a sheet bundle composed of a plurality of sheets aligned on a compile tray; and a sheet bundle discharging means for discharging the post-processed sheet bundle to a stack tray. The aligning means is disposed so as to face a side edge opposite to the sheet side edge facing the sheet side edge positioning member and to move in the width direction. A sheet processing apparatus having a sheet side edge aligning member that moves backward and presses the sheet against the sheet side edge positioning member, wherein the sheet processing apparatus has the following requirements: (Y03) Above the compile tray Has a conical rotation surface that rotates about an axis extending in the width direction and has a diameter on the sheet side edge alignment member side smaller than the diameter on the sheet side edge positioning member side, the sheet side edge positioning member side A sheet side edge guide rotating member that guides downward a side edge of the sheet that moves to the side of the sheet side edge positioning member side.