JPH07187479A - Sheet processing device - Google Patents

Abstract

PURPOSE:To provide a sheet processing device which shortens the time required for aligning a plural number of sheets at a saddle stitching position. CONSTITUTION:A sheet processing device is provided with a sheet carry-in means which carries a sheet P which is supplied to a sheet carry-in port 1 arranged on one side into a compile tray C, a side stitching stopper 42 and saddle stitching stoppers 17, 19 which stop the sheet P carried into the compile tray C at a staple work position, and an stapler 36 which staples the sheet P stored in the staple work position. The sheet carry-in means has a carry-in means for side stitch which carries in the sheet P in the direction being away from the side stitching stopper 42 and a carry-in means for saddle stitch which carries in the sheet P in the direction toward the saddle stitching stoppers 17, 19.

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 aligning and binding recording sheets discharged from an image recording apparatus such as a copying machine or a printer, and more particularly to a recording sheet arranged on a compile tray. The present invention relates to a sheet processing apparatus having a function of performing edge stitching and saddle stitching on a bundle of sheets.

[0002]

2. Description of the Related Art As a sheet processing apparatus of this type,
The following technology (J01) is known. (J01) (Technology disclosed in Japanese Patent Laid-Open No. 61-139495) This publication describes a sheet processing apparatus in which an end-stitching stapler and a saddle-stitching stapler are separately arranged. (J02) (Technology described in Japanese Patent Application Laid-Open No. 2-144370) This publication describes a technique for switching back discharged sheets, stacking the sheets with their rear ends aligned with a reference plane, and performing edge binding. There is.

[0003]

The above-mentioned conventional techniques have the following problems. (Problem of (J01)) Since the end stapling stapler and the saddle stitching stapler are separately provided, the size of the entire apparatus becomes large. It also becomes expensive. (Problem of (J02)) When performing saddle stitching, the distance for switching back the discharged sheet to convey it to the saddle stitching position becomes long. Therefore, when saddle stitching is performed, it takes a long time for aligning the sheets, and the productivity is reduced.

In view of the above circumstances, the present invention provides the following (O0
The content of 1) is the subject. (O01) To reduce the time required to align a plurality of sheets at the saddle stitch position.

[0005]

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.

(Invention) In order to solve the above-mentioned problems, the sheet processing apparatus (S) of the present invention is provided with a sheet (1, 61, 91, 141) supplied to a sheet carrying-in port (1, 61, 91, 141) arranged on one side surface. The sheet carrying-in means for carrying the sheet P into the compile tray (C), the compile tray (C) for accommodating the sheets to be carried in, and the sheet (P) carried into the compile tray (C) are stapled. Sheet processing apparatus provided with stoppers (17, 19, 42) for stopping at the working position and a stapler (36) for stapling the sheet (P) accommodated at the stapling working position in the compile tray (C) (S) has the following requirements: (Y01) The stopper (17, 1)
9, 42) has an end-stitching stopper (42) used during end-stitching work and a saddle-stitching stopper (17, 19) used during saddle-stitching work, (Y02) the sheet (P) The sheet carrying-in means for carrying in the compile tray (C) has a saddle-stitching carrying-in means for carrying in the sheet (P) in a direction toward the saddle-stitching stoppers (17, 19).

(Embodiment 1 of the present invention) Embodiment 1 of the present invention is characterized in that in the sheet processing apparatus (S) of the present invention, the sheet carrying-in means has the following requirements (Y011). An end-stitching carrying-in means for carrying in the sheet (P) in a direction away from the end-stitching stopper (42), (Y012) a sheet (P) carried into the compile tray (C) by the end-stitching carrying-in means A sheet aligning conveyance means that conveys the sheet toward the end binding stopper (42).

(Embodiment 2 of the present invention) Embodiment 2 of the present invention is Embodiment 1 of the sheet processing apparatus (S) of the present invention.
In the above (Y013), the sheet carry-in port (61, 9) is characterized in that the sheet carry-in means has the following requirements.
1) a compile tray sheet carry-in path (62, 92) for carrying the sheet (P) supplied to the compile tray (C) into the compile tray (C); and (Y014) a compile tray sheet carry-in path (62, 92). A pair of upper and lower carry-in path terminating rollers (64a, 64b; 94a, 94b), which are arranged at the end and are movable along the surface of the other,
5) The pair of upper and lower carry-in path end rollers (64a, 64b;
The sheet (P) carried through the compile tray (C) after passing through the end portions 94a, 94b) is the end binding stopper (42).
End-stitching carry-in position that is carried in in a direction away from and the saddle-stitching carry-in position that the sheet (P) that is carried in to the compile tray (C) is carried in in the direction toward the saddle-stitching stoppers (17, 19) (Y016) said carry-in path end roller moving means for moving the other carry-in path end roller (64b, 94b) along the surface of said one carry-in path end roller (64a, 94a) between The moving means has a function of moving the other carry-in path end roller (64b, 94b) from the end-stitching carry-in position to the saddle-stitching carry-in position while holding the leading end of the sheet (P).

(Third Embodiment of the Present Invention) The third embodiment of the present invention is characterized in that the sheet carrying-in means has the following requirements in the first embodiment of the sheet processing apparatus (S) of the present invention. Yes, (Y017) the sheet carry-in port (1)
Two compile tray sheet carry-in paths (6, 7) for carrying the sheet (P) supplied to the compile tray (C) into the compile tray (C), and (Y018) of the two compile tray sheet carry-in paths (6, 7). One of them (6) has a pair of upper and lower carry-in path end rollers (9a,
The sheet (P) which has passed through 9b) and is carried into the compile tray (C) is arranged so as to be carried in a direction away from the end binding stopper (42), (Y019)
Sheet loading path (6, 7) for the two compile trays
The other (7) is a saddle-stitching stopper (17) in which the sheet (P) carried into the compile tray (C) after passing through a pair of upper and lower carry-in path end rollers (11) arranged at the end thereof. , 19).

(Fourth Embodiment of the Present Invention) A fourth embodiment of the present invention is characterized in that the sheet carrying-in means has the following requirements in the first embodiment of the sheet processing apparatus (S) of the present invention. Yes, (Y020) the sheet carry-in port (14
1) one compile tray sheet carry-in path (142) for carrying the sheet (P) supplied to the compile tray (C) into the compile tray (C), and (Y021) the compile tray sheet carry-in path (142) at the end thereof. The sheet (P), which passes through the pair of upper and lower loading path end rollers (144a, 144b) and is loaded into the compile tray (C), is loaded in a direction away from the end binding stopper (42). (Y022) the sheet temporary accommodating section (146), (Y023), which is disposed so as to face the carry-in path end rollers (144a, 144b) of the compile tray sheet carry-in path (142). End-stitching guide positions (P1, (P4, P6)) for guiding the sheet (P) discharged from the end of the tray sheet carrying-in path (142) to the compile tray (C). , The reversing guide position (P2, (P5, P
6)), and once the seat temporary storage section (146)
Saddle-stitching guide positions (P3, (P5) for loading the sheet (P), which has been conveyed back to and then switched back, to the compile tray (C) in a direction approaching the saddle-stitching stoppers (17, 19). , P7)) and sheet transfer path switching members (162, 172).

[0011]

[Action]

(Operation of the present invention) Next, the operation of the present invention having the above-mentioned features will be described. In the sheet processing apparatus of the present invention having the above-mentioned characteristics, the sheet carry-in ports (1, 6) arranged on one side surface are provided.
1, 91, 141), the saddle-stitching carry-in means for carrying in the sheet (P) to the compile tray (C), when carrying in the sheet (P) to the compile tray (C), The saddle stitching stoppers (17, 1)
Carry in in the direction of 9). The sheet (P) carried into the compile tray (C) by the saddle stitching carrying-in means and conveyed toward the saddle stitching stoppers (17, 19).
Are stopped at the stapling work position by the saddle stitching stoppers (17, 19) and are stacked and accommodated in the compile tray (C). The stapler (36) saddle stitches the sheet accommodated in the staple working position in the compile tray (C). In the present invention, when performing saddle stitching,
Since it is not necessary to bring the switchback sheet conveying roller into contact with the sheet (P) placed on the compile tray (C), the sheet (P) can be conveyed to the staple position at high speed.

(Operation of Embodiment 1 of the Present Invention) In the sheet processing apparatus of Embodiment 1 of the present invention having the above-mentioned features, the sheet carry-in ports (1, 61, 91, 14) arranged on one side surface are provided.
1) the sheet (P) supplied to the compile tray (C) is loaded into the compile tray (C) by the end binding carrying-in means when the sheet (P) is loaded into the compile tray (C). Carry in in a direction away from the stopper (42). The sheet (P) carried into the compile tray (C) by the end-stitching carrying-in means is carried toward the end-stapling stopper (42) by the sheet-aligning carrying means. The sheet (P) conveyed toward the end-binding stopper (42) is stopped at the stapling position by the end-binding stopper (42) and is stacked and stored in the compile tray (C). Stapler (36)
Ends the sheets accommodated in the stapling position in the compile tray (C).

(Operation of Embodiment 2 of the Present Invention) In the sheet processing apparatus (S) according to Embodiment 2 of the present invention, in both cases of performing edge stitching work and saddle stitching work, When the sheet (P) supplied to the sheet carry-in port (61; 91) is carried into the compile tray (C),
One compile tray sheet loading path (62; 92)
Pass through. The sheet (P) has a pair of upper and lower carry-in path end rollers (64a, 64b; 94) arranged at the end of the compile tray sheet carry-in path (62; 92).
It is conveyed to the compile tray (C) by a, 94b). The pair of upper and lower carry-in path end rollers (64a, 64b;
The other (64a, 94b) is configured to be movable along the surface of one (64a; 94a), but the other (64b, 94b) is held at the end-stitching carry-in position when performing the end-stitching operation. Therefore, the sheet (P) which passes through those rollers and is carried into the compile tray (C) is carried in a direction away from the end binding stopper (42). When performing saddle stitching work, the pair of upper and lower carry-in path end rollers (64
a, 64b; 94a, 94b), the other carrying-in path terminating roller (64b; 94b) holds the leading edge of the sheet (P) by the carrying-in path terminating roller moving means, and carries in the end binding carrying-in. From the position to the saddle stitching carry-in position. Therefore, the carry-in path end rollers (64a, 64b;
The sheet (P) which has been passed through the compiling tray (C) after passing through the sheets 94a, 94b) is a saddle stitch stopper (1).
It is carried in the direction toward 7, 19).

(Operation of Embodiment 3 of the Present Invention) In the sheet processing apparatus (S) of Embodiment 3 of the present invention, the sheet (P) supplied to the sheet carry-in port (1) is transferred to the compile tray (C). ) Are provided with two compile tray sheet carry-in paths (6, 7). Then, different compile tray sheet carry-in paths (6, 7) are used when performing the edge binding work and when performing the saddle stitching work. When performing the edge-stitching operation, one (6) of the two compile tray sheet carry-in paths (6, 7) is used. In this case, the compile tray (C) passes through a pair of upper and lower carry-in path end rollers (9a, 9b) arranged at the end of the compile tray sheet carry-in path (6).
The sheet (P) carried in the sheet is fed to the end binding stopper (4
It is carried in the direction away from 2). When performing the saddle stitching work, the other (7) of the two compile tray sheet carry-in paths (6, 7) is used. In this case, the sheet (P) carried into the compile tray (C) through the pair of upper and lower carry-in path end rollers (11) arranged at the end of the compile tray sheet carry-in path (7) is the saddle stitch. It is carried in in the direction approaching the stoppers (17, 19).

(Operation of Embodiment 4 of the Present Invention) In the sheet processing apparatus (S) of Embodiment 3 of the present invention, the sheet carry-in port (141) is used regardless of whether the end binding work or the saddle stitching work is performed. ), When the sheet (P) supplied to the compile tray is carried into the compile tray (C), it passes through one compile tray sheet carrying path (142). The sheet (P) is fed into the compile tray sheet carrying-in path (14
2) Passes through a pair of upper and lower carry-in path terminating rollers (144a, 144b) arranged at the terminal end. When performing the edge-stitching operation, the sheet transport path switching member is held at the edge-stitching guide positions (P1, (P4, P6)). In this case, a pair of upper and lower carry-in path end rollers (144a, 1) arranged at the end of the compile tray sheet carry-in path (142).
The sheet (P) that has passed through 44b) and is carried into the compile tray (C) is carried in a direction away from the end binding stopper (42).

When saddle stitching is performed, when the sheet (P) is discharged from the end of the compiling tray sheet carrying-in path (142), the sheet carrying path switching member is provided with the reversing guide positions (P2, (P5). , P6)). At this time, a pair of upper and lower carry-in path end rollers (144
The sheet (P) that has passed the a, 144b) is stored in the sheet temporary accommodating portion (146) arranged so as to face the carry-in path end rollers (144a, 144b) of the compile tray sheet carry-in path (142). Be transported. The sheet (P) conveyed to the temporary sheet storage unit (146) is switched back and conveyed in the opposite direction. At this time, the sheet conveying path switching member is set at the saddle stitching guide position (P3,
(P5, P7)). In this case, the sheet (P) which is switched back and conveyed in the opposite direction is carried into the compile tray (C) in a direction approaching the saddle stitching stoppers (17, 19). In the fourth embodiment of the present invention, the sheet (P) is switched back and conveyed, but the sheet (P) is switched back after the sheet (P) is placed on the compile tray (C). Compared with the method, the time for conveying the sheet (P) to the staple position is considerably shorter. The reason is that it is unnecessary to bring the switchback roller into contact with the sheet (P) after the sheet (P) is placed on the compile tray (C).

[0017]

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. (Embodiment 1) FIG. 1 is a first embodiment of a sheet processing apparatus according to the present invention.
FIG. 3 is a vertical cross-sectional view showing a state in which is connected to a copying machine. 2A and 2B are explanatory views of the stapling position of the first embodiment, FIG. 2A is a plan view, and FIG. 2B is a side sectional view (a sectional view taken along line IIB-IIB in FIG. 2A). FIG. 3 is an explanatory diagram of a saddle stitching stopper.
A is a side view and FIG. 3B is a perspective view. FIG. 4 is an explanatory diagram of a drive mechanism for the driven roller of the discharge roller and the sheet alignment roller. FIG. 5 is an explanatory view of the operation during saddle stitching work.

On the surface of the sheet processing apparatus S which is connected to the copying machine F (one side surface of the sheet processing apparatus S), there is arranged a sheet carry-in port 1 for carrying in a sheet P copied by the copying machine F. In the copying machine F, the sheet on which the image is formed is supplied to the sheet inlet 1 of the sheet processing apparatus S. The sheet processing apparatus S has a sheet discharge port 2 on the surface opposite to the sheet carry-in port 1 and the sheet discharge port 2
The stack tray 3 accommodates the sheets P discharged from the stack tray 3.

The sheet P carried in from the sheet carry-in entrance 1 is switched by the sheet carrying path switching member 4.
It is conveyed by the conveying roller 8 to either the lower compile tray first sheet carry-in path 6 or the upper compile tray second sheet carry-in path 7. At the end of the first sheet carrying-in path 6 for the compile tray, the carrying-in path terminating roller 9 is provided.
Are arranged. The loading path end roller 9 is a drive roller 9
It is composed of a and a driven roller 9b. Further, the second sheet carrying-in path 7 for the compile tray is provided with a carrying-in path terminating roller 11 at its terminal end, and a carrying roller 12 at its intermediate part. Roll-in end roller 1
1 is composed of a driving roller 11a and a driven roller 11b, and the conveying roller 12 is composed of a driving roller 12a and a driven roller 12b. From the switching member 4, the conveying rollers 8, the lower compile tray first sheet carrying-in path 6, the carrying-in path terminating roller 9 arranged at the terminal end thereof, and the like, the end-stitching conveying means (4, 8, 6, 9) ) Is configured. In addition, for the saddle stitching from the switching member 4, the transport roller 8, the upper second compile tray second sheet carry-in path 7, the carry-in path end roller 11 arranged at the end portion thereof, and the carry roller 12 arranged at the intermediate portion. Conveying means (4, 8, 7, 1
1, 12) are configured.

A plurality of sheets are aligned at the conveyance destinations of the compile tray first sheet carry-in path 6 and the compile tray second sheet carry-in path 7 in order to perform a stapling operation (sheet binding operation). Compile tray C to accommodate
Are arranged with a slight inclination to the horizontal. The compile tray C has a sheet support plate 13 for placing the sheet P carried in from the compile tray first sheet carry-in path 6 and the compile tray second sheet carry-in path 7 and carrying it into the stapling position. Have The sheet support plate 13 forms a sheet aligning conveyance path for loading the sheet P to the stapling position. The outer end of the sheet support plate 13 is arranged adjacent to the inner end of the stack tray 3.

A pair of upper and lower sheet guides 15 and 16 (see FIG. 2B) are arranged at positions separated from the inner end of the sheet support plate 13 by a predetermined distance, and the sheet guides 15 and 16 are separated from the sheet support plate 13. The side edge (the left edge in FIG. 1) is provided with a saddle stitching stopper 17 (see FIG. 1) for positioning the edge of the sheet when performing saddle stitching. The sheet support plate 1 of the sheet guides 15 and 16
The conveyance roller 18 is arranged adjacent to the edge on the side closer to 3. Between the saddle-stitching stopper 17 and the transport roller 18, there is another saddle-stitching stopper 19 (see FIG. 1) that can be retracted into and out of the sheet passage formed between the pair of upper and lower sheet guides 15 and 16. It is provided. FIG. 3 shows a structure in which the saddle stitching stoppers 17 and 19 are projected from and retracted from the sheet passage formed between the pair of upper and lower sheet guides 15 and 16.

FIG. 3 shows the saddle stitching stoppers 17, 19 described above.
3A is a side view of the main part, and FIG. 3B is an explanatory view of the drive mechanism of FIG.
Is a perspective view. In FIG. 3, the saddle stitching stopper 19
(17) is fixed to a rotary shaft 21 rotatably supported by a frame (not shown). Therefore, the saddle stitching stopper 19 (17) rotates integrally with the rotary shaft 21. The upper end of the swing arm 22 integrally connected to the rotary shaft 21 is constantly pulled by a spring 23 in the direction of arrow A1 in FIG. 3B. At this time, the rotary shaft 21 rotates in the direction of arrow A2, and the saddle stitching stopper 19 is held at the solid line position in FIG. 3A.

The tip of the actuating member 24a of the actuator 24 is loosely connected to the lower end of the swing arm 22. The actuating member 24a is always the spring 2
It is held in the extended position by the action of No. 3, but when energized to the solenoid (not shown) inside the actuator 24, it is drawn into the inside of the actuator 24 and contracts. This actuating member 24a contracts in the direction of arrow A3 in FIG. 3B when the solenoid is actuated,
The saddle stitching stopper 19 is moved from the solid line position in FIG. 3A to the two-dot chain line position. Further, as shown in FIG. 3A, a guide roller 26 is arranged at a position close to the saddle stitching stopper 19. The guide roller 26 is used for aligning sheets when performing saddle stitching.

The saddle-stitching stoppers 17 and 19 are members for positioning the sheets when the sheets are saddle-stitched by a stapler, which will be described later. The saddle stitching stopper 19 is used for positioning a small size sheet (for example, a B4 vertical sheet). A pair of upper and lower sheet guides 30b and 30a (see FIG. 2B) are arranged between the sheet supporting plate 13 and the conveying roller 18. A space between the lower sheet guide 30a and the upper sheet guide 30b forms a sheet passage for passing the sheet P from the sheet supporting plate 13 to the conveying roller 18. The compile tray C is composed of the elements indicated by the reference numerals 13 to 30b, a tamper for sheet alignment (a member for aligning the positions in the width direction of the sheet) and the like not shown.

A drive roller 31a (see FIGS. 1 and 2B) of the discharge roller 31 is arranged at the outer end of the sheet support plate 13 adjacent to the inner end of the stack tray 3. First sheet carry-in path 6 for the compile tray (see FIG. 1)
The driven roller 9b (FIGS. 1, 2B, 4
4) is fixed to a rotating shaft 32 rotatably supported by the frame U1 as shown in FIG. In FIG. 4, a gear 32a is fixed to one end of the rotary shaft 32. Further, a discharge roller support arm 33 (see FIGS. 1, 2B and 4) is supported on the rotary shaft 32 so as to be rotatable with respect to the rotary shaft 32. This discharge roller support arm 33
A rotary shaft 34 (see FIG. 4) is rotatably supported at the tip of the. A driven roller 31b that can contact the drive roller 31a (see FIGS. 1 and 2B) is fixed to the rotary shaft 34. The driven roller 31b and the driving roller 31a
The discharge roller 31 (see FIG. 2B) is configured by (see FIGS. 1 and 2B).

Further, in FIG. 4, a sheet alignment paddle 31c is fixed to the rotary shaft 34, and a gear 34a meshing with the gear 32a is mounted via a clutch 34b. The clutch 34b is normally ON, and at that time, the rotating shaft 34 and the gear 34a are connected so as to rotate integrally. When the clutch 34b is turned off, the relative rotation between the rotary shaft 34 and the gear 34a is free. The sheet aligning paddle 31c includes a cylindrical portion having a smaller radius than the driven roller 31b, and a plurality of elastic sheets radially extending from the cylindrical portion. The outer edge of the elastic sheet is arranged outside the outer peripheral surface of the driven roller 31b.

In the above structure, when the drive roller 9a rotates, the driven roller 9b that is in contact therewith rotates,
At this time, the gears 32a and 34a rotate. At that time
As can be seen from the above, when the clutch 34b is on (normal time), the rotating shaft 34 rotates together with the gear 34a, so that the driven roller 31 fixed to the rotating shaft 34 is rotated.
b and the sheet alignment paddle 31c also rotate integrally. The discharge roller support arm 33 is rotatably connected to the rotary shafts 32 and 34. The circumference of the rotary shaft 32 of the discharge roller support arm 33 is formed in a semicircular shape, and a gear is formed on the peripheral surface thereof. This gear meshes with the output gear 35a fixed to the output shaft of the motor 35.

Therefore, in FIG. 4, the motor 35 has an arrow A.
When rotated in four directions, the discharge roller support arm 33
Between the position shown in FIG. 1 (position apart from the seat support plate 13) and the position shown in FIG. 2B (position close to the seat support plate 13) by rotating around the rotation axis 32 in the direction of arrow A5. It can be rotated with.
At the position shown in FIG. 2B (the position where the driven roller 31b is separated from the sheet on the sheet support plate 13 but the sheet aligning paddle 31c comes into contact), the clutch 34b
Is on (rotary shaft 34 and gear 34a are connected)
When the drive roller 9a rotates, the driven roller 9b, the rotary shaft 32, the gears 32a and 34a,
The sheet aligning paddle 31c rotates together with the rotating shaft 34.
At this time, the sheet aligning paddle 31c moves the sheet P to the position shown in FIG.
Move to the left with and rotate to align the sheets.
A sheet aligning transporting means for transporting the sheet carried in the compile tray C from the compile tray first sheet carrying-in path 6 toward the end binding stopper (described later) from the elements denoted by the reference numerals 9, 31 to 35. (9, 31-3
5) is configured.

In FIGS. 1 and 2, the stapler 36 has a staple ejecting portion 36a and a staple bending portion 36b which are separately formed. In FIG. 2B, the needle ejection portion 36a is connected to the lower sheet guide 30a, and the needle bending portion 36b.
Is connected to the upper sheet guide 30b. The needle ejection portion 36a includes a pair of rod-shaped guides 37, 37 (see FIG.
(See B), it is movably supported in the direction of the arrow Y1-Y2 in FIG. 2A. The needle bending portion 36b is supported by a pair of rod-shaped guides 38, 38 (see FIG. 2B) so as to be movable in the Y1-Y2 direction of FIG. 2A.

In FIG. 2, the needle ejection portion 36a and the needle bending portion 3 guided by the guides 37 and 38.
6b are simultaneously moved in the Y1-Y2 direction by a timing belt (not shown). As can be seen from FIGS. 2A and 2B, stopper inlet / outlet holes 41 are formed on both sides of the needle bending portion 36b in the upper sheet guide 30b. The upper sheet guide 30b supports an end binding stopper 42 that can be retracted downward from the stopper insertion / removal hole 41. The end binding stopper 42 is normally held by a spring (not shown) at a position projecting from the stopper inlet / outlet hole 41 into a sheet passage formed between the upper and lower sheet guides 30a and 30b. When a solenoid (not shown) is operated, the solenoid is held at a retracted position above the upper sheet guide 30b from the sheet passage.

In the state where the end binding stopper 42 is retracted above the stopper inlet / outlet hole 41 of the upper sheet guide 30b, the sheet can freely move through the sheet passage formed between the upper sheet guide 30b and the lower sheet guide 30a. You will be able to pass. The sheets stopped by the end-stitching stopper 42 are end-stitched by the stapler 36, and the sheets stopped by the saddle-stitching stoppers 17 and 19 are saddle-stitched by the stapler 36.

In FIG. 1, the sheet path formed by the pair of upper and lower sheet guides 15 and 16 (see FIGS. 1 and 2B) is located downstream of the saddle stitching stopper 17 shown in FIG. A sheet conveying path 43 leading to the lower folded portion of the sheet bundle is connected to a position (on the left side of the binding stopper 17). The sheet bundle folding section 44 connected to the downstream side of the sheet conveying path 43 is provided with the sheet conveying path 4
A center-folding stopper 46 for positioning and stopping the saddle-stitched sheet bundle carried in from 3 according to the size of the sheet,
Have 47. The center folding stopper 46
Is for a large sheet size (for example, paper size A3
In the case of), it is fixedly arranged. The center-folding stopper 47 is a stopper when the sheet size is small (for example, when the sheet size is B4), and is arranged so as to be able to move in and out of the passage of the sheet bundle.

In FIG. 1, the center folding stopper 46 is shown.
Or a pair of center-folding rolls 48, 4 corresponding to the position of the saddle-stitched portion of the saddle-stitched sheet bundle whose positioning is stopped at 47.
9 and a folding plate 51 that presses the saddle-stitched sheet bundle while folding the saddle-stitched portion between the saddle-stitching rolls 48 and 49. The folding plate 51 is always held at a position (retracted position) outside the path of the saddle-stitched sheet bundle by a return spring 52. , 49 between them. The saddle-stitched sheet bundle folded by the center-folding rolls 48 and 49 is conveyed to the center-folded sheet discharge roller 56 through the sheet bundle discharge path 54. This center-folded sheet discharge roller 56
Is configured to discharge the half-folded sheet bundle to the half-folded sheet tray 57.

(Operation of First Embodiment) Next, the operation of the first embodiment will be described. (Operation during edge-stitching operation of the first embodiment) First, a case where edge-stitching of a plurality of sheets P sequentially carried into the sheet carry-in port 1 will be described. In this case, since the sheet is carried into the compile tray C from the compile tray first sheet carrying-in path 6 which constitutes the edge-stitching carrying means, the sheet carrying path switching member 4 is held at the position shown in FIG. The discharge roller support arm 33, as shown in FIG.
It is held at a position away from the sheet support plate 13. Further, the end-binding stopper 42 is held at the position shown in FIG. 2B. Further, the stapler 36 is the Y of FIG. 2A.
The sheet P is moved to the center position in the width direction in the 1-Y2 direction.

In this state, the sheet P carried in from the sheet carry-in port 1 is carried by the sheet carrying path switching member 4 through the lower compile tray first sheet carrying-in path 6. The sheet P conveyed from the carry-in passage end roller 9 at the end of the compile tray first sheet carry-in passage 6 is carried in on the sheet support plate 13 of the compile tray C constituted by the reference numerals 13 to 30b. , Fall. Then, when the sheet is carried into the compile tray, it is carried in a direction away from the end binding stopper 42.

When the sheet P passes through the carry-in path end roller 9 and drops onto the sheet support plate 13, the discharge roller support arm 33 is rotated by the motor 35 (see FIG. 4), as shown in FIG. 2B. It is moved to a position (a position where the driven roller 31b comes into contact with the sheet and the sheet aligning paddle 31c comes into contact with the sheet). If the drive roller 9a of the carry-in path end roller 9 is rotated in this state, the sheet aligning paddle 31c rotates clockwise in FIG. 2B, and the sheet P on the sheet support plate 13 is moved to the left in FIGS. Move to. The sheet P is positioned by abutting the end-binding stoppers 42, 42 on both sides of the stapler 36 arranged at the central portion in the width direction (Y1-Y2 direction). In this way, the position of the sheet P transported to the sheet support plate 13 in the transport direction is positioned at the position of the end binding stopper 42. The position of the sheet P in the width direction (Y1 and Y2 directions) is determined by a tamper for sheet alignment (not shown).

When the required number of sheets P are positioned at a predetermined position (end-stitching work position) on the compile tray C as described above, the drive motor 46 is driven to move the stapler 36 in the Y1-Y2 direction (sheets). Width direction). Then, the stapler 36 is moved to a predetermined end binding position, and then the end binding work (stapling work) is performed. It is also possible to carry in the sheet P in a state where the stapler 36 is arranged at the end-stitching position in advance, and in that case, the end-stitching work is performed without moving the stapler 36.
When the sheets P are positioned by the edge binding stopper 42, the edges of the sheets P are bound, so the binding operation in this case is edge binding. If there are multiple binding points, the stapler 36 is placed at the next binding position.
Move to perform the binding work.

In this way, by end-stitching the plurality of sheets P by the stapler 36, an end-stitched sheet bundle is formed. This end-stitched sheet bundle is discharged to the stack tray 3 from the sheet discharge port 2 of FIG. The discharge is performed as follows. 2B, the clutch 34b (see FIG.
Is turned off and the rotation shaft 34 is freely rotatable, the driven roller 3 of the discharge roller 31 is attached to the upper surface of the sheet bundle.
1b is brought into contact with the driving roller 3 of the discharge roller 31.
The sheet bundle is sandwiched between 1a and the driven roller 31b. In this state, the driving roller 31a is driven to eject the end-stitched sheet bundle from the sheet ejection port 2 to the stack tray 3. As can be seen from the above description, after performing the stapling operation, the sheet ejection operation can be performed without performing the evacuation of the staples or the vertical movement of the compile tray, so that the bound sheets can be ejected promptly. It can be carried out.

(Operation during Saddle Stitching Work of Embodiment 1) Next, a case will be described in which a plurality of B4 size sheets P sequentially carried into the sheet carry-in entrance 1 are saddle-stitched to perform the center folding work. Whether or not to perform the center folding operation is designated by an operation button on an operation panel (not shown) of the copying machine F.
When the saddle stitching work is not performed, the saddle stitched sheet bundle is discharged to the stack tray 3 from the sheet discharge port 2 of FIG. 1 as in the case of the edge stitching.

A plurality of Bs sequentially carried into the sheet carry-in entrance 1
When performing a center folding operation by saddle stitching a 4 size sheet P, the sheet conveying path is switched so that the sheet carried in from the sheet carrying-in port 1 is carried to the compile tray second sheet carrying-in path 7. The member 4 is rotated counterclockwise from the position shown in FIG. 1 and held in the position shown in FIG. Then, as shown in FIG. 1, the discharge roller support arm 33 holds the discharge roller support arm 33 at a position separated from the sheet support plate 13. The end binding stopper 42 is retracted upward from the position of FIG. 2B so that the sheet can freely pass between the sheet guides 30a and 30b. Then, the saddle stitching stopper 19 is made to project into the sheet passage between the sheet guides 15 and 16. Further, the center-folding stopper 47 (see FIG. 1) is projected in the sheet passage. Further, the stapler 36 is connected to the Y1-Y2 of FIG. 2A.
The sheet P is moved to the center position in the width direction.

In this state, the sheet P carried in from the sheet carry-in port 1 is carried by the sheet carrying path switching member 4 and the second compile tray second sheet carrying-in path 7. Then, the sheet P conveyed from the carry-in passage end roller 11 at the end portion of the second sheet carry-in passage 7 for the compile tray is carried in on the sheet support plate 13 of the compile tray C constituted by the reference numerals 13 to 30b and the like. It In this case, as can be seen from FIG. 5, the sheet P which is carried into the compile tray C through the pair of upper and lower carry-in path end rollers 11a and 11b arranged at the end of the second sheet carry-in path 7 for the compile tray is the above-mentioned. It is carried in in a direction approaching the saddle stitching stopper 19.

The sheet P is fed into the carry-in path end roller 11
The sheet guides 30a, 3 are slid on the sheet supporting plate 13 or on the sheet placed thereon.
It passes through the sheet path between 0b and reaches the conveyance roller 18.
The transport roller 18 transports the sheet P further downstream.
The sheet P conveyed by the conveying rollers 18 contacts the saddle stitching stopper 19 and is positioned. In this way, the position of the sheet P conveyed from the carry-in passage end roller 11 of the second sheet carry-in passage 7 for the compile tray is positioned at the position of the saddle stitching stopper 19. Further, the position of the sheet P in the width direction is positioned by a tamper for sheet alignment, not shown.

As described above, at the time of saddle stitching work, the sheets carried into the compile tray C from the compile tray second sheet carrying-in path 7 of the saddle stitching carrying-in means are carried in the direction toward the saddle stitching stopper 19. To be done. The sheets carried into the compile tray C by the saddle stitching carry-in means and conveyed toward the stopper for saddle stitching are stopped at the stapling position by the stopper for saddle stitching, and are stacked in the compile tray. . As can be seen from the above description, when stacking sheets during saddle stitching, it is not necessary to bring the sheet conveying roller for switchback into contact with the sheet P placed on the compile tray C as in the conventional case. It can be conveyed to the staple position (saddle stitch position) at high speed.

When the required number of B4 size sheets P are positioned at a predetermined position of the compile tray C (saddle stitching work position determined by the saddle stitching stopper 19) as described above, the stapler 36 performs saddle stitching. I do. When the saddle stitching position is different from the current position of the stapler 36, the stapler 36 is moved in the Y1-Y2 direction (sheet width direction) of FIG. 2A. Then, after the stapler 36 is moved to a predetermined saddle stitching position, saddle stitching work (stapling work) is performed. When there are a plurality of saddle stitching locations, the stapler 36 is moved to the next saddle stitching position to perform the saddle stitching work.

In this way, a saddle-stitched sheet bundle is formed by saddle-stitching the plurality of sheets P by the stapler 36. The stopper 19 is retracted downward, and the saddle-stitched sheet bundle is passed through the sheet passage between the sheet guides 30a and 30b, and is conveyed from the sheet conveying path 43 of FIG. 1 to the sheet bundle folding section 44. This transportation is performed as follows. When the conveyance roller 18 is driven with the saddle stitching stoppers 17 and 19 retracted from the sheet path,
The saddle-stitched sheet bundle is conveyed from the sheet conveying path 43 to the sheet bundle folding section 44. In this case, after performing the stapling operation, the compile tray C is not retracted or the compile tray C is moved up and down.
Since the sheet P can be discharged from the compiling tray C, the bound sheet bundle can be quickly discharged from the compile tray C.

The sheet bundle is the sheet bundle folding section 4
Positioning is stopped by the stopper 46 of No. 4. The saddle-stitched portion of the sheet bundle is arranged so as to face between the center-folding rolls 48 and 49. When the eccentric cam 53 is rotated in this state to move the center folding plate 51 forward, the saddle stitching portion of the sheet bundle is folded between the center folding rolls 48 and 49 while being center-folded by the tip of the center folding plate 51. Be pushed into. The sheet bundle (center-folded sheet bundle) folded in this way is conveyed to the center-folded sheet bundle discharge roller 56 through the center-folded sheet bundle discharge path 54, and further,
The sheet is discharged to the half-folded sheet tray 57.

(Second Embodiment) Next, a second embodiment of the sheet processing apparatus of the present invention will be described with reference to FIGS. FIG. 6 is a side view of the second embodiment of the sheet processing apparatus of the present invention. FIG. 7 is a perspective view of essential parts of the second embodiment. FIG. 8 is an explanatory view of the operation of the second embodiment. 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. This Example 2
Is different from Example 1 in the following points, but is configured similarly to Example 1 in other points. (S01) The configuration of the sheet carry-in means for carrying the sheet into the compile tray C is different from that in the first embodiment.

In other words, the sheet carry-in means of the second embodiment has one compile tray sheet carry-in path 62 for carrying the sheet P supplied to the sheet carry-in entrance 61 into the compile tray C, and the sheet carry-in entrance 61. It has a carrying roller 63 arranged. At the end of the compiling tray sheet carry-in path 62, a carry-in path end roller 64 is provided.
Are arranged. The carry-in path terminating roller 64 is composed of a driving roller 64a arranged on the lower side and a driven roller 64b arranged on the upper side, that is, a pair of upper and lower rollers. The driven roller 64b is held at the position shown in FIG. 6, that is, the end-stitching carry-in position when performing the end-stitching operation. When the driven roller 64b is held at the end-stitching carry-in position shown in FIG. 6, the driven roller 64b passes through the pair of upper and lower carry-in path end rollers 64a and 64b from left to right in FIG. 6 and is carried into the compile tray C. The sheet P is conveyed in a direction away from the end-binding stopper 42. A sheet sensor 65 for detecting the leading edge or the trailing edge of the passing sheet P is arranged at a position before the carry-in passage end roller 64 in the compile tray sheet carry-in passage 62.

At the right end of the compile tray C, the first drive roller 31a of the discharge roller 31 is arranged. The second drive roller 31b of the discharge roller 31 is rotatably supported by the swing arm 66 above the first drive roller 31a. The swing arm 66 is constantly urged to a lower position (position indicated by a virtual line in FIG. 6) by a tension spring 67, but is held at an upper position (position indicated by a solid line in FIG. 6) by a solenoid 68 when necessary. It is like this.

A driven roller (the pair of carry-in path end rollers 64a, 64b) is provided along the surface of the drive roller (one of the pair of carry-in path end rollers 64a, 64b) 64a.
The other) 64b is configured to be movable.
The carry-in path end roller moving means for moving the driven roller 64b along the surface of the drive roller 64a is shown in FIG. In FIG. 7, a drive roller 64a of the carry-in path terminal roller 64 is fixed to a rotary shaft 71 rotatably supported by a frame U1. A belt 76 is hung between the pulley 72 fixed to the rotating shaft 71 and the pulley 74 fixed to the output shaft of the drive motor 73. Therefore, the rotation shaft 71 rotates in the forward and reverse directions by the forward and reverse rotations of the drive motor 73.

The driven roller support member 77 for supporting the driven roller 64b is rotatable by the pair of arm portions 78, 78 and the connecting portion 79 connecting the arm portions 78, 78, and the pair of arm portions 78, 78. And a driven roller support shaft 80 supported by. A driven roller 64b is fixed to the rotatable driven roller support shaft 80, and the surface of the driven roller 64b and the surface of the drive roller 64a are in contact with each other.

The arm portion 7 of the driven roller support member 77.
8, 78 are rotatably supported on the rotary shaft 71 via a clutch 81 with a torque limiter (a clutch that idles when the torque is equal to or greater than a certain value when the clutch is on). Further, the driven roller support member 77 is directed by the return spring 82 to a position where the driven roller 64 always contacts the stopper 83 (a position where the driven roller 64b is held at the position shown in FIG. 6), that is, an end-stitching carry-in position. Is being urged. Therefore, when the clutch 81 with the torque limiter is off, the driven roller support member 77 and the driven roller 64b are held at the end-stitching carry-in position.
When the drive motor 73 rotates in this state, the driven roller 64a and the driven roller 6 contacting the driven roller 64b are held in the end-stitching carry-in position shown in FIG.
4b is designed to rotate.

When the drive motor 73 rotates while the clutch 81 with the torque limiter is on, the driven roller support member 77 rotates integrally with the rotary shaft 71. At this time, the driven roller 64b supported by the driven roller support member 77 moves along the surface of the drive roller 64a while contacting. When the driven roller support member 77 integrally rotates with the rotary shaft 71 by a predetermined angle, the driven roller support member 77 comes into contact with the stopper 84 to prevent further rotation. After the driven roller support member 77 abuts on the stopper 84, the torque limiter clutch 81 idles so that the driven roller support member 77 is held at that position and only the rotating shaft 71 continues to rotate. Has become.

(Operation of Second Embodiment) Next, the operation of the second embodiment having the above-described structure will be described. (Operation of Edge Stitching Work of Embodiment 2) At the time of edge binding work,
The clutch 81 with the torque limiter is used in an off state. At this time, the driven roller 64b is held at the end-stitching work position shown in FIG. The solenoid 68 is turned on to raise the swinging arm 66 to move the discharge roller 31.
The sheet P carried in from the sheet carry-in port 61 with the second drive roller 31b of FIG. 6 held at the position shown by the solid line in FIG. Carried to C. At this time, the sheet P carried into the compile tray C is carried in a direction away from the end binding stopper 42.

When the solenoid 68 is turned off after the sheet P passes through the carry-in path end roller 64, the second drive roller 31b of the discharge roller 31 moves to the position of the phantom line in FIG. The sheet P on the drive roller 31a is pressed. In that state, the second drive roller 31b is moved to the position shown in FIG.
When rotated clockwise with, the sheet P moves to the left,
It contacts the end-binding stopper 42. At this time, the sheet P is positioned at the edge binding position. Then, the solenoid 68 is turned on to raise the second drive roller 31b of the discharge roller 31 to the solid line position in FIG. In this state, the next sheet P is positioned at the end binding position in the same manner as described above. Then, after stacking a plurality of sheets P and positioning them at the edge binding position, edge binding is performed by the stapler 36.

When the solenoid 68 is turned on, the second drive roller 31b of the discharge roller 31 contacts the upper surface of the sheet bundle end-stitched by the stapler 36.
In this state, the first driving roller 31 of the discharge roller 31
When a is rotated clockwise in FIG. 6 and the second drive roller 31b is rotated counterclockwise, the end-bound sheet bundle is discharged to the stack tray 3.

(Operation during saddle stitching operation of the second embodiment) Next, the operation during the saddle stitching operation of the second embodiment will be described with reference to FIG.
Similarly to the first embodiment, the B4 size sheet P is saddle-stitched,
The case of center folding will be described. During the saddle-stitching operation of the second embodiment, the positions of the stoppers 42, 19, 17, 47 are maintained as in the first embodiment. Initially, the clutch 8 with the torque limiter is the same as in the end binding work.
1 (see FIG. 7) is used in the off state. At this time,
The driven roller 64b is held at the same position as the end-stitching work position shown in FIG. When the solenoid 68 is turned on to raise the swing arm 66 and the driven roller 31b of the discharge roller 31 is held at the position shown by the solid line in FIG. The tray sheet carry-in path 62 is conveyed.

The leading end of the sheet P is the end roller 6 of the carry-in path.
The sheet sensor 65 detects that the sheet has passed 4 and has reached the position shown in FIG. 8A. When the leading end of the sheet P reaches the position shown in FIG. 8A, the torque limiter clutch 81 is turned on, and the driven roller support member 77 is turned on.
(See FIG. 7) starts rotating integrally with the rotating shaft 71. Then, the driven roller 64b supported by the driven roller support member 77 moves along the surface of the drive roller 64a while being in contact with the drive roller 64a while sandwiching the leading end of the sheet P between the driven roller 64b and the drive roller 64a, as shown in FIG. The state shown in FIG. In the state shown in FIG. 8C, the driven roller support member 77 is prevented from further rotation by the stopper 84 (see FIG. 7). At this time, the clutch 81 with the torque limiter idles, and the driven roller support member 7
7, the driving roller 64a and the driven roller 64b continue to rotate while being held at that position. Then, the sheet P is carried into the compile tray C.

The sheet P carried into the compile tray C is carried in the direction toward the saddle stitching stopper 19. The leading edge of the sheet P is the saddle stitching stopper 1
9 and the trailing edge of the sheet P passes through the carry-in path end roller 64, the clutch 81 with the torque limiter (see FIG. 7) is turned off. Then, the driven roller support member 77 is rotated by the return spring 82 and held at the position where it abuts on the stopper 83. In this state, the next sheet P is positioned at the saddle stitching position in the same manner as described above. Then, after stacking a plurality of sheets P and positioning them at the saddle stitching position, saddle stitching is performed by the stapler 36. The operation of folding the saddle-stitched sheet bundle is the same as that of the first embodiment.

(Third Embodiment) Next, a third embodiment of the sheet processing apparatus of the present invention will be described with reference to FIGS. 9A and 9B are explanatory views of a sheet processing apparatus according to a third embodiment of the present invention. FIG. 9A is a diagram showing a state when a sheet is carried in when performing edge binding work, and FIG.
FIG. 6 is a diagram illustrating a state when sheets are aligned. FIG. 10 is an explanatory diagram of the carry-in path end roller moving means. 11A and 11B are operation explanatory views of components of the carry-in path end roller moving means shown in FIG. 10, FIG. 11A is a view showing a rotation direction of a gear of the carry-in path end roller moving means, and FIG. It is a figure which shows the rotation direction of the roller. 12A and 12B are explanatory views of a stopper used in the third embodiment, FIG. 12A is a diagram showing a state in which a solenoid for operating the stopper is off, and FIG. 12B is a diagram showing a state in which the solenoid is on. Figure 1
3A and 3B are explanatory views when performing saddle stitching work of the third embodiment, FIG. 13A is a view showing an initial state when a sheet is loaded, FIG. 13B is a view showing an intermediate state when a sheet is loaded, and FIG. 13C is a sheet loaded. It is a figure showing the final stage state of.

In the description of the third embodiment, constituent elements corresponding to those of the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. This Example 3
Is different from Example 1 in the following points, but is configured similarly to Example 1 in other points. (S01) The configuration of the sheet carry-in means for carrying the sheet into the compile tray C is different from that in the first embodiment.

That is, the sheet carry-in means of the third embodiment has one compile tray sheet carry-in path 92 for carrying the sheet P supplied to the sheet carry-in entrance 91 into the compile tray C, and the sheet carry-in entrance 91. It has the carrying-in path terminating roller 93 arranged. At the end of the compile tray sheet carrying-in path 92, a carrying-in path terminating roller 94 is arranged. The carry-in path terminating roller 94 is composed of a driving roller 94a arranged on the lower side and a driven roller 94b arranged on the upper side, that is, a pair of upper and lower rollers. A driven roller (the pair of loading path end rollers 94a, 9b) is provided along the surface of the drive roller (one of the pair of loading path end rollers 94a, 94b) 94a.
The other of 4b) 94b is configured to be movable. A driven roller 9 is provided along the surface of the drive roller 94a.
4b is a transfer path end roller moving means, which is shown in FIG.
~ 12.

The driven roller 94b is used at the position shown in FIG. 9A when carrying out the end-stitching operation, that is, at the end-stitching carry-in position. When the driven roller 94b is used in the end-stitching carry-in position shown in FIG. 9A, the pair of upper and lower carry-in path terminating rollers 94a and 94b pass from left to right in FIG. 9 and are carried into the compile tray C. The sheet P is carried in a direction away from the end binding stopper 42. A sheet sensor 95 for detecting the leading end or the trailing end of the passing sheet P is arranged in the position before the carry-in passage end roller 94 in the compile tray sheet carry-in passage 92.

At the right end of the compile tray C, the drive roller 31a of the discharge roller 31 is arranged. 9A and 9
In B, the arm 9 that rotates around the rotation axis of the driven roller 94b that moves along the surface of the drive roller 94a.
A driven roller 31b of the discharge roller 31 is supported at the tip of the roller 6. The driven roller 31b is held in the state shown in FIG. 9A when the sheet P is carried into the compile tray C. Then, when the sheet P carried into the compile tray C is brought into contact with the end binding stopper 42, the sheet P is used in the state of FIG. 9B (state of pressing the sheet from above the drive roller 31a).

In FIG. 10, a drive roller 94a of the carry-in passage terminating roller 94 is fixed to a rotary shaft 101 rotatably supported by a frame (not shown).
The gear 102 fixed to the rotating shaft 101 meshes with an intermediate gear 106 that meshes with a gear 104 fixed to the output shaft of the drive motor 103. Therefore, the rotation shaft 101 rotates in the forward and reverse directions by the forward and reverse rotations of the drive motor 103.

In FIG. 10, the driven roller supporting member 107 for supporting the driven roller 94b is a pair of arm portions 10
8, 108 and a connecting portion 109 for connecting the arm portions 108, 108, and the pair of arm portions 108, 10
Driven roller support shaft 11 rotatably supported by 8
It is composed of 0 and 0. In addition, in FIG. 10, the intermediate portion of the connecting portion 109 is indicated by a chain double-dashed line. The driven roller supporting shaft 110, which is rotatable, has a driven roller 9
4b is fixed, and the surface of the driven roller 94b and the surface of the drive roller 94a are in contact with each other.

The arm portions 108, 108 of the driven roller support member 107 are provided with a clutch 111 with a torque limiter.
It is rotatably supported by the rotary shaft 101 via (a clutch that idles when the torque is equal to or more than a certain value when the clutch is in the on state). Further, the driven roller supporting member 107 is constantly stopped by the return spring 112.
13 (a position where the driven roller 94b is in the position shown in FIG. 9).
The position is held at the position indicated by A), that is, the loading position for end binding is biased. Therefore, when the clutch with torque limiter 111 is off, the driven roller support member 107 and the driven roller 94b are held at the end-stitching carry-in position.

The driven roller support shaft 110 is rotatably supported by the arms 108 of the driven roller support member 107. The driven roller 94b is fixed to the driven roller support shaft 110. A small gear 117 and a large gear 118 are fixed to the driven roller support shaft 110. The small gear 117 meshes with the gear 102 fixed to the rotating shaft 101. Therefore, by the rotation of the drive motor 103, the drive roller 94a fixed to the rotary shaft 101 and the driven roller 94b fixed to the driven roller support shaft 110 are simultaneously rotated.

The arm members 108, 108 rotatably support the discharge roller arms 96, 96 for supporting the driven rollers 31b of the discharge roller 31, respectively. A driven roller support shaft 122, to which the driven roller 31b of the discharge roller 31 is fixed, is rotatably supported on the discharge roller arms 96, 96. A gear 124 is attached to the driven roller support shaft 122 via a clutch 123. The gear 124 is the driven roller support shaft 110.
It meshes with the large gear 118 fixed to the. Therefore, when the drive motor 103 rotates, its rotational force is sequentially transmitted to the gear 124 via the gears 104, 106, 102, 117, 118. When the clutch 123 is on, the gear 124
When the clutch 123 is turned off, the rotational force is transmitted to the driven roller support shaft 122 when the gear rotates.
Even if 24 rotates, the rotational force is not transmitted to the driven roller support shaft 122.

Further, the arm member 108 is provided with an upper limit stopper 126 and a lower limit stopper 127.
A tension spring 128 is provided between the arm portion 108 and the discharge roller arm 96. By the tension spring 128, the discharge roller arm 96 is held at a position where it is always in contact with the lower limit stopper 127.

Therefore, when the drive motor 103 rotates while the clutch 111 with the torque limiter is off (the rotation shaft 101 and the arm portion 108 are free to rotate), the return roller 112 causes the driven roller 94b to move. 9A, the driving roller 94a and the driven roller 9 that comes into contact with the driving roller 94a while being held in the end-stitching carry-in position.
4b is designed to rotate. When the drive motor 103 rotates while the clutch 111 with the torque limiter is on, the driven roller support member 107
Rotates integrally with the rotating shaft 101. At this time, the driven roller 9 supported by the driven roller supporting member 107.
4b is adapted to move along the surface of the drive roller 94a while making contact.

When the driven roller support member 107 rotates integrally with the rotary shaft 101, the discharge roller arm 96 also rotates. A stopper 131 (see FIGS. 10 and 12) capable of projecting and retracting in the rotation path of the discharge roller arm 96 is supported by a frame (not shown).
In FIG. 12, the L-shaped stopper 131 has an operating arm 132 that is integrally connected. The stopper 131 is a shaft 1 supported by a frame (not shown).
It is rotatably supported around 33. Stopper 131
The outer end of the actuating arm 132 is connected with an actuating rod 137 that expands and contracts by a solenoid 136 with play. That is, a pin (not shown) supported by the operating rod 137 penetrates an elongated hole (not shown) formed at the outer end of the operating arm 132.

The actuating rod 137 is normally held at the position shown in FIG. 12A, which is extended by a compression spring (not shown). But when the solenoid 136 turns on,
It contracts and is held in the position of Figure 12B. At the position shown in FIG. 12A, the stopper 131 is provided with the discharge roller arm 9
6 is in a position deviated from the path of the rotation of 6, but at the position of FIG.
It protrudes into the path when it rotates. Therefore, when the stopper 131 is in the position of FIG.
Is freely rotatable from the position shown in FIG. 9A to the position shown in FIG. 9B. However, when the stopper 131 is in the position shown in FIG. 12B, the ejection roller arm 96 cannot rotate from the position shown in FIG. 9A to the position shown in FIG. 9B.

(Operation of Third Embodiment) Next, the operation of the third embodiment having the above-described structure will be described. (Operation during edge-stitching operation of the third embodiment) In FIG.
(See FIG. 10) is used in the off state. In this state, even if the drive motor 103 is driven, the arm 10
8 (see FIG. 10) is held by the return spring 112 at a position where it abuts on the stopper 113. At this time,
The driven roller 94b is held at the end-stitching work position shown in FIG. 9A. Further, the solenoid 136 is turned off and the stopper 131 is held in the state of FIG. 12A. Further, the clutch 123 (see FIG. 10) is turned on.

When the drive motor 103 is driven in this state, as can be seen from FIG. 10, the driven roller 94b is held at the end-stitching work position shown in FIG.
a, the driven roller 94b, and the driven roller 31b of the discharge roller 31 rotate. In this state, the sheet carrying-in port 91
The sheet P carried in from is carried into the compile tray C through the sheet carry-in path 92 for the compile tray and the carry-in path terminating roller 94. At this time, compile tray C
The sheet P carried in is carried in a direction away from the end binding stopper 42.

The trailing edge of the sheet P is the trailing edge roller 9 of the carry-in path.
When the clutch P with torque limiter is turned on after the sheet P is placed on the compile tray C after passing through No. 4, the arm portion 108 and the discharge roller arm 96
Rotate integrally with the rotating shaft 101. Then, the driven roller 94b moves along the surface of the drive roller 94a, resulting in the state shown in FIG. 9B. Then, the driven roller 31b of the discharge roller 31 is pressed against the sheet P on the drive roller 31a. In that state, as can be seen from FIG. 11, the driven roller 31b is rotating in the clockwise direction. Therefore, the sheet P moves to the left and contacts the end binding stopper 42.
At this time, the sheet P is positioned at the edge binding position. Then, when the clutch 111 with the torque limiter is turned off, the driven roller 31b of the discharge roller 31 is raised by the return spring 112 to the position shown in FIG. 9A. In this state, the next sheet P is positioned at the end binding position in the same manner as described above. Then, after stacking a plurality of sheets P and positioning them at the edge binding position, edge binding is performed by the stapler 36.

Next, the clutch 123 is turned off, and the driven roller support shaft 122 is rotated in the free state.
When the clutch 111 with the torque limiter is turned on, the driven roller 94b is in a rotation-free state as shown in FIG. 9B.
Move to position. The driven roller 94b contacts the upper surface of the sheet bundle end-stitched by the stapler 36. In this state, when the driving roller 31a of the discharge roller 31 is rotated clockwise in FIG. 9B, the end-stitched sheet bundle is discharged to the stack tray 3.

(Operation during saddle stitching work of the third embodiment) Next, the operation during the saddle stitching work of the third embodiment will be described with reference to FIG. A case will be described in which the B4 size sheet P is saddle-stitched and center-folded as in the first embodiment. During the saddle stitching operation of the second embodiment, the stoppers 42, 19, 17, 4 are
The position 7 is maintained as in the first embodiment. Initially, the clutch 111 with the torque limiter is used in the OFF state, as in the end binding operation. At this time, the driven roller 94b is held at the position shown in FIG. 13A (the same position as the end-stitching work position in FIG. 9A). The clutch 123 shown in FIG. 10 may be turned off or turned on, but here it is turned off to allow the driven roller support shaft 122 to rotate freely. And the solenoid 13
6 is turned on and the stopper 131 is held at the position shown in FIG. 12B. In this state, the sheet P carried in from the sheet carry-in port 91 is the sheet carry-in path 92 for the compile tray.
Be transported.

The leading edge of the sheet P is the end roller 9 of the carry-in path.
It has been detected by the sheet sensor 95 that the vehicle has passed 4 and reached the position shown in FIG. 13A. When the leading edge of the sheet P reaches the position shown in FIG. 13A, the torque limiter clutch 111 is turned on, and the driven roller support member 107 (see FIG. 10) starts rotating integrally with the rotary shaft 101. Then, the driven roller 94b supported by the driven roller support member 107 moves along the surface of the drive roller 94a while being in contact with the drive roller 94a while sandwiching the leading end of the sheet P with the drive roller 94a. It becomes the state of. In the state of FIG. 13B, the discharge roller arm 96
Is engaged with the stopper 131. When the discharge roller arm 96 engages with the stopper 131, it cannot rotate any further.

Since the drive motor 103 continues to rotate, the driven roller support member 107 further rotates. Then, the discharge roller arm 96 rotates relative to the arm portion 108 of the driven roller support member 107 about the driven roller support shaft 110. Then, the discharge roller arm 96 separates from the lower limit stopper and contacts the upper limit stopper 126 (see FIG. 10). And
It will be in the state shown in FIG. 13C. In the state shown in FIG. 13C, the driven roller support member 107 has the stopper 131.
Prevents further rotation. At this time, the clutch 111 with the torque limiter idles, and only the driving roller 94a and the driven roller 94b continue to rotate while the driven roller supporting member 107 is held at that position (the position shown in FIG. 13C). Then, the sheet P is carried into the compile tray C.

The sheet P carried into the compile tray C is carried in the direction toward the saddle stitching stopper 19. The leading edge of the sheet P is the saddle stitching stopper 1
9 and the trailing end of the sheet P passes through the carry-in passage terminal roller 94, the clutch 111 with the torque limiter is turned off. Then, the driven roller support member 10
7 is rotated by the return spring 112 and the stopper 1
13 is held at a position (position shown in FIG. 13A) that abuts on 13. In this state, the next sheet P is positioned at the saddle stitching position in the same manner as described above. Then, after stacking a plurality of sheets P and positioning them at the saddle stitching position, saddle stitching is performed by the stapler 36. The operation of folding the saddle-stitched sheet bundle is the same as that of the first embodiment.

(Fourth Embodiment) Next, a fourth embodiment of the sheet processing apparatus of the present invention will be described with reference to FIGS. 14A is a side view of a sheet processing apparatus according to a fourth embodiment of the present invention.
Composes the sheet P on the compile tray C when performing the edge stitching work.
FIG. 14B is a diagram showing a state when the sheet is loaded in the sheet, and FIG. 14B is a diagram showing a state when the sheet loaded in the compile tray C is aligned with the edge binding position when performing the edge binding operation. Figure 15
FIG. 8 is an explanatory diagram of a gate that switches the sheet conveyance direction used in the fourth embodiment. FIG. 16 is an explanatory diagram of rollers 144 and 147, which are essential parts of the fourth embodiment. FIG. 17 is an operation explanatory view of saddle-stitching operation of the fourth embodiment, FIG. 17A is a diagram showing a state in which a sheet is conveyed to a temporary sheet accommodating portion when the saddle-stitching operation is performed, and FIG. FIG. 17C is a diagram showing a state in which the sheet stored in the temporary sheet storage unit is carried in to the compile tray C, and FIG. 17C is a diagram showing a state in which the sheet is stored in the temporary storage unit. In the description of the fourth 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 fourth embodiment differs from the first embodiment in the following points, but is configured similarly to the first embodiment in other points. (S03) The configuration of the sheet carry-in means for carrying the sheet into the compile tray C is different from that of the first embodiment.

That is, the sheet carry-in means of the fourth embodiment has one compile tray sheet carry-in path 142 for carrying the sheet P supplied to the sheet carry-in port 141 into the compile tray C, and the sheet carry-in port 141. It has a transport roller 143 arranged. At the end of the compiling tray sheet carry-in path 142, a carry-in path end roller 144 is arranged. Roll-in end roller 14
4 is composed of a driving roller 144a arranged on the lower side and a driven roller 144b arranged on the upper side, that is, a pair of upper and lower rollers. The sheet P, which has passed through the pair of upper and lower transport path end rollers 144a and 144b from left to right in FIG. 14 and is loaded into the compile tray C, is loaded in a direction away from the end binding stopper 42. A sheet sensor 145 for detecting the leading edge or the trailing edge of the passing sheet P is disposed at a position before the carry-in passage end roller 144 in the compile tray sheet carry-in passage 142.

The compile tray sheet carrying-in passage 14
A sheet temporary accommodating portion 146 is provided so as to face the carry-in path terminating roller 144. The sheet temporary accommodating portion 146 includes a first conveying roller 147 arranged to face the carry-in path terminating roller 144, a second conveying roller 148 arranged to face the first conveying roller, and the second conveying roller 148. It has a sheet storage path 149 connected to the transport roller 148. The first transport roller 147 is the drive roller 1
47a and driven roller 147b. The second transport roller 148 includes a drive roller 148a and a driven roller 148b. A sheet sensor 150 is arranged between the first transport roller 147 and the second transport roller 148.

As can be seen from FIG. 16, a rotary arm 153 is attached to the rotary shaft 151 of the carry-in path end roller 144, which rotates integrally with the drive roller 144a, via a clutch 152 with a torque limiter. A rotating shaft 154 that rotates integrally with the driving roller 147a of the first transport roller 147 is rotatably supported by the rotating arm 153. A gear 155 fixed to the rotating shaft 151 and a gear 157 mounted on the rotating shaft 154 via a clutch 156 mesh with an intermediate gear 158 rotatably supported by the rotating arm 153. The gear 155 meshes with a gear 159 that rotates in both forward and reverse directions by a drive motor (not shown).

When the clutch 152 with the torque limiter is off and the clutch 156 is on, the gear 1
When 59 rotates, gears 155, 158, and 157 rotate while rotating arm 153 remains in the state shown in FIG. 14A, and at this time, rotating shafts 151 and 154 rotate. Then, the drive rollers 144a and 147a also rotate at the same time. When the gear 159 rotates while the clutch 152 with the torque limiter is on, the rotation arm 153 moves from the state shown in FIG. 14A to the state shown in FIG. 14B.
The rotation gear 147a is rotated to the position shown in FIG. 1 to move the sheet P placed on the compile tray C to the left. Also, the clutch 1 with the torque limiter
When 52 is off, the rotary arm 153 is always held at the home position (the position where the drive gear 147a is held at the position shown in FIG. 14A) by the return spring 160 (see FIG. 16). There is.

In FIGS. 14 and 15, between the carry-in path end roller 144 and the first carrying roller 147, a gate 162 as a carrying path switching member for switching the carrying direction of the sheet P discharged from the carry-in path ending roller 144. Are arranged. In FIG. 15, a gate 162 includes an end binding guide position P1 that guides the sheet P discharged from the end of the compile tray sheet carry-in path 142 to the compile tray C, and an accommodating section guide position P2 that guides the sheet temporary accommodating section 146. , And between the saddle-stitching guide positions P3 for loading the sheet P, which has been once transported to the temporary sheet accommodating portion 146 and then switched back and transported to the compile tray C in the direction of approaching the saddle-stitching stopper 19. It is configured to be movable.

(Operation of Fourth Embodiment) Next, the operation of the fourth embodiment having the above-described structure will be described. (Operation during edge binding work of Example 4) During edge binding work,
First, the gate 162 guides the sheet P discharged from the end of the compile tray sheet carry-in path 142 to the compile tray C for the end binding guide position P1 (FIG. 14A).
And the solid line position in FIG. 15), and the clutch 152 with the torque limiter is used in an off state. In this state, the sheet P carried in from the sheet carry-in port 141 is the sheet carry-in path 14 for the compile tray.
2. It is carried into the compile tray C through the carry-in path end roller 144. At this time, the sheet P carried into the compile tray C is carried in a direction away from the end binding stopper 42.

After the sheet P passes through the carry-in path end roller 144, the clutch 152 with the torque limiter is provided.
When is turned on, the rotating arm 153 (see FIGS. 14 and 16) rotates integrally with the rotary shaft 151, and the drive roller 147a moves from the position of FIG. 14A to the position of FIG. 14B. The drive roller 147a is the discharge roller 31.
And rotates in contact with the sheet P on the driving roller 31a. At this time, the sheet P moves to the left, and the end binding stopper 4
Abut 2. At this time, the sheet P is positioned at the edge binding position. Then, when the clutch 152 with the torque limiter is turned on, the rotary arm 153 returns to the home position (the position where the drive roller 147a is held at the position shown in FIG. 14A) by the return spring 160.

In this state, the next sheet P is positioned at the end binding position in the same manner as described above. Then, after stacking a plurality of sheets P and positioning them at the edge binding position, edge binding is performed by the stapler 36.

When the clutch 156 is turned off and the rotary shaft 154 and the drive roller 147a are free, and the clutch 152 with a torque limiter is turned on, the rotation free is applied to the upper surface of the sheet bundle end-stitched by the stapler 36. Drive roller 147a of the above contacts. In this state, when the drive roller 31a is rotated clockwise in FIG. 14B, the end-stitched sheet bundle is discharged to the stack tray 3. Therefore, in this Example 4,
The drive roller 31a and the drive roller 147a form a discharge roller 31.

(Operation during saddle-stitching operation of the fourth embodiment) Next, the operation during the saddle-stitching operation of the fourth embodiment will be described with reference to FIG. A case will be described in which the B4 size sheet P is saddle-stitched and center-folded as in the first embodiment. During the saddle stitching operation of the second embodiment, the stoppers 42, 19, 17, 4 are
The position 7 is maintained as in the first embodiment. First, the gate 162 is used as the compile tray sheet carrying-in path 1.
The sheet P discharged from the trailing end of the sheet 42 is held at the storage section guide position P2 (see FIGS. 17A and 15) that guides the sheet P to the sheet temporary storage section 146. Further, the clutch 152 with the torque limiter shown in FIG.
Is used in the on state. In this state, the sheet P carried in from the sheet carrying-in port 141 passes through the compile tray sheet carrying-in path 142 and the carrying-in path terminating roller 144, and then the first carrying roller 14 of the sheet temporary accommodating portion 146.
7, the second transport roller 148, and the sheet storage path 149.

As shown in FIG. 17B, when the sheet P is conveyed to the sheet temporary accommodating portion 146 and the rear end is detected by the sheet sensor 150, the gate 162 moves to the saddle stitching guide position P3. Then, the gear 159 rotated by the drive motor (not shown) is reversed. Further, the second transport roller 148 also rotates in the reverse direction. Then, as shown in FIG. 17C, the sheet P is carried into the compile tray C from the sheet temporary container 146.

The sheet P carried into the compile tray C is carried in the direction toward the saddle stitching stopper 19. The leading edge of the sheet P is the saddle stitching stopper 1
The sheet P contacts the sheet 9 and is positioned and held at the saddle stitching position. When the rear end of the sheet P passes through the sheet sensor 150 and a predetermined time elapses, the gate 162 guides the sheet P discharged from the end of the compile tray sheet carry-in path 142 to the sheet temporary accommodation section 146. It is held at the guide position P2 (see FIGS. 14A and 15). From this state, the next sheet P is positioned at the saddle stitching position in the same manner as described above. Then, after stacking a plurality of sheets P and positioning them at the saddle stitching position, saddle stitching is performed by the stapler 36. The operation of folding the saddle-stitched sheet bundle is the same as that of the first embodiment.

(Fifth Embodiment) Next, a fifth embodiment of the sheet processing apparatus of the present invention will be described with reference to FIG. FIG. 18 is a side view of an essential part of a fifth embodiment of the sheet processing apparatus of the present invention, which is a view corresponding to FIG. 15 of the fourth embodiment. The fifth embodiment differs from the fourth embodiment in the following points, but is configured similarly to the fourth embodiment in other points. (S04) As a transport path switching member that is disposed between the carry-in path end roller 144 and the first carry roller 147 in the fourth embodiment and that switches the carrying direction of the sheet P discharged from the carry-in path end roller 144. The gate 172 used in place of the gate 162 is divided into two parts.

That is, as can be seen from FIG. 18, the gate 172 of the fifth embodiment includes the carry-in path side gate 173 arranged on the carry-in path end roller 144 side and the first carrying roller 147 side of the sheet temporary accommodating portion 146. The gate 174 on the side of the temporary accommodation unit arranged in the above is divided into two. The carry-in path side gate 173 is discharged from the end binding guide position P4 for guiding the sheet P discharged from the end of the compile tray sheet carry-in path 142 to the compile tray C, and the end of the compile tray sheet carry-in path 142. The sheet P is configured to be movable between an accommodation section guide position P5 (see FIG. 18) that guides the sheet P to the sheet temporary accommodation section 146.

Further, the temporary storage section side gate 174 has a storage section guide position P6 (see FIG. 18) for guiding the sheet P discharged from the end of the compile tray sheet carry-in path 142 to the sheet temporary storage section 146. , Between the saddle-stitching guide positions P7 for carrying the sheet P, which has been once transported to the sheet temporary accommodating portion 146 and then switched back, to the compile tray C in a direction approaching the saddle-stitching stopper 19. It is configured to be movable.

(Operation of Fifth Embodiment) In the sheet processing apparatus according to the fifth embodiment, the position of the entrance-side gate 173 is P4.
In addition, when the position of the gate 174 on the temporary accommodation portion side is P6, the same operation as when the gate 162 shown in FIG. 15 of the fourth embodiment at the end binding guide position P1 is performed. Also,
When the position of the gate 173 on the loading passage side is P5 and the position of the gate 174 on the temporary accommodation unit side is P6, the above-mentioned fourth embodiment is performed.
The same operation as when the gate 162 shown in FIG. 15 is at the accommodation portion guide position P2 is achieved. In addition, the position of the entrance road side gate 173 is P5 and the temporary accommodation section side gate 174 is
When the position is P7, the same operation as when the gate 162 shown in FIG. 15 of the fourth embodiment at the saddle stitching guide position P3 is performed.

(Modifications) Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described 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.

(H01) When carrying a sheet into the compile tray when carrying out edge binding work, it is possible to carry the sheet in a direction approaching the edge binding stopper instead of loading it in a direction away from the edge binding stopper. is there. (H02) Stopper 131 that can appear and disappear in the rotation path of the discharge roller arm 96 of the third embodiment (see FIGS. 10 and 12).
Instead of rotating the shaft 133 around a shaft 133 by a frame (not shown), the solenoid can be directly retracted in the rotation path of the discharge roller arm 96.

[0101]

The sheet processing apparatus of the present invention described above can achieve the following effects. (E01) When the sheets are loaded into the compile tray, the sheets can be loaded in the direction toward the saddle stitching stopper of the compile tray, and the sheets can be stopped at the saddle stitching position at the same time when the sheets are loaded. It is possible to reduce the time required for the alignment.

[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 connected to a copying machine.

2A and 2B are explanatory views of a stapling position of the first embodiment, FIG. 2A is a plan view, and FIG. 2B is a side sectional view (of FIG. 2A).
IIB-IIB line sectional view).

FIG. 3 is an explanatory diagram of a saddle stitching stopper, and FIG.
Is a side view and FIG. 3B is a perspective view.

FIG. 4 is an explanatory diagram of a drive mechanism for a driven roller of a discharge roller and a sheet alignment roller.

FIG. 5 is an explanatory view of the operation during saddle stitching work.

FIG. 6 is a side view of a sheet processing apparatus according to a second embodiment of the present invention.

FIG. 7 is a perspective view of a main part of the second embodiment.

FIG. 8 is an operation explanatory view of the second embodiment.

9A and 9B are explanatory views of a third embodiment of the sheet processing apparatus of the present invention, FIG. 9A is a diagram showing a state when a sheet is carried in when performing edge binding work, and FIG. 9B is a diagram when performing sheet alignment. It is a figure which shows a state.

FIG. 10 is an explanatory diagram of a carry-in path terminating roller moving means.

11 is an operation explanatory view of elements of the carry-in path end roller moving means shown in FIG. 10, FIG. 11A is a view showing a rotation direction of gears of the carry-in path end roller moving means, and FIG.
FIG. 6 is a diagram showing a rotation direction of a roller of a carry-in path end roller moving means.

12 is an explanatory diagram of a stopper used in the third embodiment, FIG. 12A is a diagram showing a state in which a solenoid for operating a stopper is off, and FIG. 12B is a diagram showing a state in which the solenoid is on.

13A and 13B are explanatory diagrams when performing saddle stitching work of the third embodiment, FIG. 13A is a diagram showing an initial state when a sheet is loaded, and FIG. 13B is a diagram showing an intermediate state when a sheet is loaded. FIG. 13C is a diagram showing a final stage state when a sheet is carried in.

14 is a side view of a sheet processing apparatus according to a fourth embodiment of the present invention. FIG. 14A is a diagram showing a state in which a sheet is carried into a compile tray C when performing edge binding work, and FIG. FIG. 9 is a diagram showing a state in which the sheets carried into the compile tray C are aligned with the edge-stitching position when the edge-stitching operation is performed.

FIG. 15 is an explanatory diagram of a gate for switching the sheet conveyance direction used in the fourth embodiment.

FIG. 16 is a diagram showing a roller 14 which is an essential part of the fourth embodiment.
It is explanatory drawing of 4,147.

FIG. 17 is an operation explanatory view of saddle-stitching operation of the fourth embodiment, FIG. 17A is a view showing a state in which a sheet is conveyed to a sheet temporary accommodating portion when saddle-stitching operation is performed, and FIG. FIG. 17C is a diagram showing a state in which the sheet is conveyed to the sheet temporary accommodation unit, and FIG. 17C is a diagram showing a state when the sheet accommodated in the sheet temporary accommodation unit is carried into the compile tray C.

FIG. 18 is a side view of essential parts of a sheet processing apparatus according to a fifth embodiment of the present invention, which corresponds to FIG. 15 of the fourth embodiment.

[Explanation of symbols]

C ... Compile tray, P ... Sheet, P1 ... Edge stitching guide position, P2 ... Inverting guide position, P3 ... Saddle stitching guide position, (P4, P6) ... Edge stitching guide position, (P5,
P6) ... Reversing guide position, (P5, P7) ... Saddle stitching guide position, S ... Sheet processing device, 1 ... Sheet carry-in port, 6
Compile tray sheet carry-in path, 7 Compile tray sheet carry-in path, 9 ... Carry-in path end roller, 9a ... Carry-in path end roller drive roller, 9b ... Carry-in path end roller driven roller, 11 ... Carry-in path end roller , 17 ... Saddle stitching stopper, 19 ... Saddle stitching stopper, 42 ... Edge stitching stopper, 36 ... Stapler, 61 ... Sheet carry-in port, 6
2 ... Compile tray sheet carry-in path, 64 ... Carry-in path end roller, 64a ... Carry-in path end roller drive roller, 6
4b ... Driven rollers of the trailing end roller of the carry-in path, 91 ... Sheet carry-in port, 92 ... Sheet carry-in path for compile tray, 94 ...
Carry-in path end roller, 94a ... Drive roller of carry-in path end roller, 94b ... Follower roller of carry-in path end roller, 141
... sheet carry-in port, 142 ... sheet carry-in path for compile tray, 144 ... carry-in path end roller, 144a ... drive roller of carry-in path end roller, 144b ... driven roller of carry-in path end roller, 146 ... sheet temporary accommodating section,

Claims (1)

[Claims] 1. A sheet carry-in means for carrying in a sheet supplied to a sheet carry-in port arranged on one side surface to a compile tray, a compile tray for accommodating a sheet to be carried in, and a carry-in to this compile tray. A stopper for stopping the stapled sheet at the stapling position and a sheet accommodated at the stapling position in the compiling tray.
A sheet processing apparatus provided with a stapler for stapling a sheet, the sheet processing apparatus having the following requirements, (Y01) The stopper is an edge-stitching stopper used during edge-stitching operation and a saddle-stitching operation. (Y02) A sheet carrying-in means for carrying the sheet into the compile tray,
A saddle stitching carry-in means for carrying in the sheet in a direction toward the saddle stitching stopper;