JP2963137B2 - Paper processing equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper processing apparatus that performs a stapling process or the like on conveyed paper.

[Conventional technology]

Conventionally, for example, JP-A-62-20046 and JP-A-62-1
No. 91375, JP-A-62-176246, JP-A-62-290
No. 669, JP-A-59-82263, JP-A-63-101268
As described in Japanese Unexamined Patent Publication (Kokai) No. H10-210, the transfer paper conveyed from the image forming apparatus is stored in a staple tray and bound to the transfer paper, and a bundle of the bound transfer paper is dropped to a lower tray and discharged. An image forming post-processing apparatus configured to perform the processing is generally known.

[Problems to be solved by the invention]

However, in the conventional image forming post-processing apparatus as described above, since the jogger fence and the reference fence are connected or configured as the same, the stapling place by the stapling apparatus is determined at a fixed position. There is a problem that the binding process is executed at a place different from the original binding position depending on the image forming direction on the transfer paper, that is, the writing direction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above, and has as its object to solve the problems of the conventional image forming post-processing apparatus and execute a binding process at an appropriate place corresponding to a transfer sheet.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a paper processing apparatus for binding a conveyed paper with an over-staple fastening section to perform a bookbinding process, wherein the staple section includes a paper receiver and a paper on the paper receiver. A stapling apparatus for binding, a plurality of reference fences and a jogger fence for aligning the paper on the paper receiver in a paper transport direction and a direction orthogonal to the paper transport direction are provided, and the jogger fence and the plurality of reference fences are provided. Move independently, at least one of the plurality of reference fences is orthogonal to the paper transport direction so as to support the paper on the paper receiver in a region to the left of the center of the paper on the paper receiver. To be movable in the direction of
The other reference fence is provided so as to be movable in a direction perpendicular to the paper transport direction so as to support the paper on the paper receiver in an area right of the center of the paper on the paper receiver, and the jogger fence and the An object of the present invention is to provide a paper processing apparatus in which each of a plurality of reference fences is stopped and positioned at a desired place.

In addition, the jogger fence and the reference fence move independently, and each is stopped and positioned at a desired position, and the jogger fence is provided so as to be controlled independently of the stapling device. An object of the present invention is to provide a paper processing apparatus in which the reference fence is provided with an engagement portion that fits with the stapling device and transmits a moving force of the stapling device to the reference fence.

Further, the two movable reference fences, which are arranged symmetrically and execute the paper alignment process in the paper conveyance direction, are independent of the jogger fence, and are moved independently of the jogger fence by the engagement portion along with the movement of the stapling device. The paper processing apparatus is provided which is urged in the direction of the central portion of the conveyance by the urging means which is moved and connected.

Further, the two movable reference fences, which are arranged symmetrically and execute the paper alignment process in the paper conveyance direction, are independent of the jogger fence, and are moved independently of the jogger fence by the engagement portion along with the movement of the stapling device. The present invention provides a paper processing apparatus in which a reference fence moves in the opposite direction based on the movement of one reference fence.

The two movable reference fences, which are symmetrically arranged and perform a paper alignment process in the paper transport direction, are provided so as to be controlled independently of the stapling device, and are also provided with a jogger fence. And a paper processing apparatus in which the other reference fence moves in the opposite direction based on the movement of one reference fence in an independent state.

[Action]

In the paper processing apparatus according to the present invention, the stapling device is engaged with the reference fence or separately from the jogger fence for aligning the paper at the most appropriate binding position corresponding to the size and the direction of use of the transfer paper bundle. It is moved by the driving means, and at this time, the transfer paper bundle is always held on the jogger fence.

〔Example〕

Hereinafter, an embodiment of a paper processing apparatus according to the present invention will be described with reference to the drawings.

The finisher (image forming post-processing apparatus) 100 shown in FIG. 1 is provided on a side of an image forming apparatus (not shown) such as an electrophotographic apparatus, and includes an upper shift sorter I and a lower sorter I. And a staple section II on the side.

Hereinafter, the configuration of the shift sorting unit I, the operation during the normal copying process, the stapler, the jogger fence, and the reference fence mechanism of the staple unit II, the discharge belt mechanism of the staple unit II, the discharge tray mechanism of the staple unit II,
Binding operation, discharge tray up / down operation, jogger fence operation, other operations in staple unit II, discharge belt operation in staple unit II, shift tray system operation in staple unit II, staple tray system operation in staple unit II The operation and the control system of the finisher will be described in detail in this order.

Configuration of Shift Sorting Unit I As shown in FIG. 1, a plurality of transport rollers and driven rollers that follow the transport rollers are arranged on the transport path of the shift sorting unit I. The rotation axis of the first transport roller 101 is
The transport drive motor M via the first timing belt 102
It is connected to one rotating shaft to obtain driving force. The rotation axis of the first conveyance roller 101 is rotated by a second timing belt (not shown), the rotation axis of another conveyance roller, the rotation axis of the discharge roller 103, and the rotation axis of the paper-feed fur brush 104. And are configured to drive them.

In addition, an entrance sensor SN1 is provided immediately before the uppermost transport roller 101, and the discharge roller 103 is provided.
In front of is a paper ejection sensor SN2,
The leading end and the trailing end of the conveyed transfer paper are detected. Downstream of the first transport roller 101, a switching claw 105 is provided, and a driving solenoid 251 is provided.
(See FIG. 9) and a spring (not shown) can change the transport direction to either the staple unit II or the discharge tray 220 or 106 of the shift sorting unit I.

Also, as shown in FIGS. 2, 3 and 4,
In the vicinity of the paper discharge port, a paper shift fur brush 104 is disposed immediately below the paper discharge roller 103, and the transfer paper dropped on the paper discharge tray 106 is rotated by the rotation thereof to abut a plate 107.
And is abutted against the abutment plate 107, whereby the rear end of the transfer paper is aligned.

The bumping plate 107 and the discharge tray 106 are formed with irregularities as shown in FIG. 3, and are configured to mesh with each other. Accordingly, the discharge tray 106 can be freely moved in the up-down direction with respect to the abutting plate 107, and is configured to move in conjunction with the abutting plate 107 in the front-rear direction.

4 and 5, the abutment plate 107 is supported by a shaft-like shift guide 110 via a bearing 109 on a main body side different from the discharge tray 106 so that the abutment plate 107 can be freely moved in the front-rear direction. It is configured. Also, butting plate
107 is eccentrically connected to a crank 112 via an arm rod 111. The rotation axis of the crank 112 is arranged parallel to the central axis of the image forming apparatus. Gear bracket 1 is attached to detachable bracket 114 that projects vertically from side plate 113.
15 are arranged, and the crank 1
12 is connected to the shift motor M2. The crank 112 is driven by driving the shift motor M2, and the abutting plate 107 reciprocates in the front-rear direction by the eccentric rotation action. Therefore, the discharge tray 106 regulated in the front-rear direction with respect to the abutting plate 107 also reciprocates in the front-rear direction.

The abutment plate 107 has two shift detection plates 116 arranged at an interval substantially equal to the amount of movement by the crank 112.
Are provided, and the shift detection plate 116 is
The shift detection sensor 117 facing 07 detects that the butting operation and the tray shift operation have moved by one step.

Further, as shown in FIG. 6, a holding roller 108 is supported via a bracket 118 fixed to the abutment plate 107 so as to be vertically movable and rotatable. The upper surface of the transferred transfer paper is pressed by its own weight. The transfer paper sneaks under the holding roller 108 due to gravity and the conveying force of the paper shift fur brush 104,
It is abutted against the abutment plate 107. When the discharge tray 106 is shifted by the pressing force of the pressing roller 108, transfer paper misalignment is prevented.

The paper surface detection sensor SN3 faces the holding roller 108.
When the position of the press roller 108 rises due to the accumulation of the transfer paper, the paper surface detection sensor SN3 detects a part of the press roller support bracket 119, and thereby the paper surface or the upper surface of the discharge tray. Has reached the specified height.

7 and 8 show a mechanism for vertically moving the discharge tray 106. The discharge tray 106 is fixed to the tray support 120. FIG. The tray support table 120 is supported by a tray vertical movement table 118 via a bearing 120a so as to be movable back and forth.
Therefore, as described above, the shift operation by the abutment plate 107 can be performed by the tray up-down movement base 118.

As shown in FIG.
Is fixed to the third timing belt 121. The third timing belts 121 are provided one by one on the outside of the front and rear side plates 113, and each of the third timing belts 121 is
2 and the driven pulley 123. The vertical drive pulley 122 includes a vertical drive shaft 1 that passes through between the side plates.
24, the vertical drive shaft 124 is provided with a gear 125 incorporating a one-way clutch.
The one-way clutch built in the gear 125 is configured to transmit a force in a direction to lift the discharge tray 106 to the vertical drive shaft 124. Gear 125 above
Is connected to a vertical drive motor M3 via a gear train, a worm wheel 126, a worm 127 and the like. A bearing 128 is attached to a side surface of the vertical motion support base 118, and the vertical guide rail 1 fixed to the side plate 113 is provided.
29, a guide that moves up and down by contact with the discharge tray 106 due to the rotational moment due to the weight of the discharge tray 106.
Is prevented from falling down.

With the configuration described above, the holding force of the worm 127 and the one-way clutch are normally locked, whereby the lowering of the discharge tray 106 is stopped. Also, when the vertical drive motor M3 is rotated in the upward direction of the discharge tray 106, the one-way clutch is locked and the pulley
The rotation of 122 and 123 causes the discharge tray 106 to rise. When the vertical drive motor M3 is rotated in the lowering direction of the discharge tray 106, the one-way clutch is in a free state, whereby the discharge tray 106 is lowered by its own weight.

Further, as shown in FIG. 9, an upper limit sensor SN4 and a lower limit sensor SN5 are installed inside the timing belt so as to oppose the discharge tray 106, and the discharge tray is detected by each of the upper and lower detection plates 130. 106 upper and lower limits are detected. Here is the upper limit sensor SN
Numeral 4 is configured to detect the tray height obtained by the paper surface detection sensor SN3 when there is no paper on the discharge tray 106. When the discharge tray 106 is lowered, the one-way clutch is in a free state. Therefore, even when the driving force of the vertical drive motor M3 is not transmitted to the discharge tray 106, and When the dynamic drive motor M3 idles, troubles such as overload of the motor and pinching of fingers are prevented.

Operations During Normal Copy Processing When the copy processing operation is started, the shift motor M2 is driven, and the crank 112 is rotated, so that the abutment plate 107 is moved in the front-rear direction with the crank 112 via the arm rod 111. Moving. Along with this, the discharge tray 106, which meshes with the unevenness of the abutment plate 107 and is supported vertically and vertically, is moved in the front-rear direction to start the shift operation. After that, one of the shift detection plates 116 detected by the shift detection sensor 117 before the start of the shift operation.
When the other shift detection plate 116 is detected, the shift motor M2 is stopped by the signal, and the shift operation ends. After the shift operation is completed, the vertical drive motor
M3 is driven in the tray raising direction, and the discharge tray 106 is raised. After the start of the vertical movement, when a part of the support bracket 119 of the holding roller 108 is detected by the paper surface detection sensor SN3, or when the upper limit sensor SN4 detects the vertical detection plate 130, the vertical drive motor M3 is stopped by the signal. Thus, the lifting of the discharge tray 106 ends. When the paper surface detection sensor SN3 detects the support bracket 118,
When the vertical drive motor M3 is driven in the tray lowering direction and the paper surface detection sensor SN3 stops detecting the support bracket 118, the vertical drive motor M3 is stopped.

The transfer roller 101 receives the transfer paper discharged from the image forming apparatus main body at the same linear speed as the discharge speed from the main body. When the transfer paper is conveyed and the entrance sensor SN1 detects the rear end of the transfer paper, the linear velocity is increased to a value greater than the main body discharge speed of the transfer paper, and the rear end of the transfer paper is detected by the entrance sensor. After a predetermined time from the detection by SN1, the linear velocity is returned to the transfer paper main body discharge speed, and then the discharge tray 10
Discharge to 6 is performed. The transfer paper discharged to the discharge tray 106 is sunk under the holding roller 108 by the gravity and the conveying force due to the rotation of the paper shift fur brush 104, and the abutting plate 107
, The rear end is aligned. At this time, when the specified number of copies is discharged, the shift motor M2 is driven by the signal, and the shift operation is started. When the one-step shift is completed, the shift motor M2
Stops. By this operation, the transfer paper stacking position on the discharge tray 106 is changed, and the transfer paper is sorted. Thereafter, when a series of copying operations is completed and the final sheet is discharged, the vertical drive motor M3 is driven in a downward direction by the signal, and the operation is terminated after the discharge tray 106 is lowered by a predetermined amount.

When a certain amount of transfer paper is accumulated, the paper surface approaches the paper exit, and a part of the holding roller support bracket 118 is used as the paper surface detection sensor S.
When the signal is detected by N3, the vertical drive motor M3 is driven in the tray lowering direction by the signal, the holding force of the worm 127 and the lock of the one-way clutch are released, and the discharge tray 106 is lowered by its own weight. Output tray 1
When the paper is lowered due to the lowering of 06 and a part of the holding roller support bracket 118 is not detected by the paper surface detection sensor SN3, the signal from the vertical movement drive motor M3
Is stopped, and the holding force of the worm 127 and the locking of the one-way clutch act to stop the discharge tray 106. The discharge tray 106 is lowered, and the vertical drive motor M3 is stopped by a signal when the upper and lower detection plate 130 is detected by the lower limit sensor SN5, thereby preventing the discharge tray 106 from lowering below.

Staplers, jogger fences, and staples II
Next, the configuration of the staple unit II will be described with reference to FIGS. 1, 10, 11, and 12. FIG.

First, the stapler S is fixed to the stapler base 201. The stapler base 210 is engaged with a guide hole 202a of the stapler slider 202 via a guide pin 203 so as to be movable in one direction as shown in FIG. Further, a shaft 204 is fixed to the back side of the stapler base 201, and a guide roller 205 is rotatably attached to the shaft 204. The upper portion of the stapler slider 202 is attached so as to be slidable in a direction perpendicular to the plane of FIG. 12 using a guide lock 208 bridged between both side plates 206 and 207, and a lower portion of the stapler slider 202. The guide roller 209 mounted on the stapler slider 209 is abutted so as to roll on the surface of the stay 210 on the main body side.
2 is locked in the rotation direction. Also, stay 210
The guide cam 211 is fixed, and the guide roller 205 is in contact with the cam surface formed on the upper end side of the guide cam 211 so as to roll, whereby the stapler slider 202 is moved. It reciprocates in the k direction in FIG. 10A. At this time, the central portion of the guide cam 211 is formed so as to be depressed downward, along which the taper slider 202 moves.

At the upper end of the stapler slider 202, a detection plate 202b is provided. The detection plate 202b shields a detection portion of a home position sensor 212 provided on the main body side to thereby control the home position (HP) of the stapler S. ) Is detected. A stapler moving stepping motor M20 is attached to the side plate 206, and a middle portion of a belt 213 driven by the stepping motor M20 is fixed to the stapler slider 202 so that the stepper slider 202 is moved in the horizontal direction in FIG. Reciprocate to.

Jogger fence rod 214 between both side plates 206 and 207
, And this jogger fence rod 214
A left jogger fence 218 and a right jogger fence 217 are fixed to the left slider 216 and the right slider 215, respectively. The left jogger fence 218 and the right jogger fence 217 have a function of aligning the bundle of sheets in the stapling operation, and extend from the vicinity of the discharge roller 219 to the vicinity of the discharge tray 220 so that the paper after the binding processing is performed. It has a function as a guide member when discharging the bundle.

The left slider 216 and the right slider 215 are fixed to an intermediate portion of the belt 221 driven by the jogger fence driving motor M21. These left slider 2
The 16 and right sliders 215 are respectively fixed to different sides of the belt 221 so that the left jogger fence 218 and the right jogger fence 217 are reciprocated symmetrically in the left-right direction in FIG. 10A. Guide rollers 222 are attached to the upper back side of the left jogger fence 218 and the right jogger fence 217, and the guide rollers 2
The roller 22 is in rolling contact with a guide stay 223 that extends over the upper portions of the side plates 206 and 207. The left slider 216 is provided with a detection plate 216a.
a is the home position sensor 2 provided on the main unit side
The home positions (HP) of the jogger fences 218 and 217 are detected by shielding the 24 detection units.
Meanwhile, the left jogger fence as shown in Figure 15
A curl retainer 225 is provided at the lower end of the right jogger fence 218 and the right jogger fence 217, thereby suppressing buckling during stacking on the staple tray. The curl retainer 225 is formed from an elastic member such as a polyester film.

Above left jogger fence 218 and right jogger fence 2
A reference fence 24 which moves separately from the left jogger fence 218 and the right jogger fence 217
6 and 247 are provided.
The lower edge of the paper bundle is held by rear end abutting portions 246a and 247a formed in a hook shape at the lower end of 47. Further, these reference fences 246, 247 are respectively fixed to intermediate portions of different belt portions of the belt 290 driven by the reference fence drive motor M24, whereby the reference fences 246, 247 are FIG. 10A is configured to be reciprocated symmetrically in the left-right direction.

An engagement portion for the stapler S is provided at a portion between the rear end butting portions 246a and 247a formed on each of the reference fences 246 and 247.
When the stapler S is moving to the upper position, which is the area on both ends of the apparatus, each of the engaging portions is engaged with the stapler S, and the stapler S moves to the lower position, which is the apparatus central area. The stapler S is configured to be in a detached state when the stapling is performed. Further, when the stapler S and the reference fences 246, 247 are connected via the above-mentioned respective engagement portions, the moving force of the stapler S is transmitted to the reference fences 246, 247,
At this time, as the stapler S moves, the reference fence 24
6, 247 will move. In fact, one of the two reference fences 246 and 247 is connected to the stapler S via the engaging portion, and the one of the reference fences 246 and 247 fitted with the stapler S moves. The reference fences 246 and 247 on the other side in the detached state move symmetrically.

FIG. 10B is a schematic diagram of FIG. 10A showing a second embodiment of the staple unit, and the same parts as those in FIG. 10A are denoted by the same reference numerals and description thereof will be omitted.

In this embodiment, the left and right reference fences 246 and 247 are configured to be movable left and right by a guide member (not shown). In a state where the left and right reference fences 246 and 247 can move in the left and right directions, the biasing force acts on the left and right reference fences 246 and 247 in a direction in which the reference fences are always returned to the transport center portion by the springs 288 and 289.

In Fig. 10B, stapler S and left reference fence
247 is engaged at the engaging portion and moves to the binding position for the transfer sheet against the urging force of the spring 289, but the right reference fence 246 engages with the stapler S having the moving force. As a result, it is in a state of being returned toward the transport center by the urging force of the spring 288.

As described above, the reference fences 246 and 247 for executing transfer paper alignment in the transport direction are separated from the jogger fences 217 and 218, and the two reference fences are used as the springs 288 and 2
89, the two reference fences 246 and 247 are configured to move in accordance with the movement of the stapler S.
Any position on the transfer paper can be bound.
The stapler S and the reference fences 246 and 247 are no longer disengaged because the stapler S always returns to the vicinity of the conveyance center even if it is shifted.

Furthermore, since it is only necessary to set the reference fences 246 and 247 in a movable state, there is no need for a driving means (motor, bell, etc.) for driving the reference fence, and there is also an effect of reducing the number of components inside the apparatus.

FIG. 10C is a schematic diagram of FIG. 10A showing a third embodiment of the staple unit, and the same parts as those in FIG. 10A are denoted by the same reference numerals and description thereof will be omitted.

In this embodiment, the left and right reference fences 246 and 247 are configured to be movable left and right by a guide member (not shown). In a state in which the left and right reference fences 246 and 247 can move in the left and right directions, a belt 290 (a driving means independent of the belt, for example, a motor M24 shown in FIG. It has not been)
Are fixed to intermediate portions 291 of different belt portions, respectively, and are configured to be symmetrically movable in the left-right direction in FIG. 10C.

In Fig. 10C, stapler S and left reference fence
247 is engaged at the engagement portion, and thus has moved to the binding position for the transfer sheet with the movement of the stapler S, but the right reference fence 246 has moved by the movement amount of the left reference fence 247 with the movement of the left reference fence 247. It is symmetrically moved by the belt 290 in the opposite direction by the distance.

In this way, the reference fences 246 and 247 for executing transfer paper alignment in the transport direction are separated from the jogger fences 217 and 218, and the two reference fences move symmetrically via the belt 290, and Two reference fences 24
6, 247 are configured to move in accordance with the movement of the stapler S, so that any position on the transfer paper can be stapled, and since they always move symmetrically, one reference fence is transported. Returning to the center,
Since the other reference fence always moves to the vicinity of the transport center and is in a standby state, the state in which the stapler S and the reference fences 246 and 247 cannot be engaged does not exist.

In addition, pulley 290a and belt 290 are used for reference fences 246 and 247.
Therefore, the driving means (motor or the like) for driving the reference fence becomes unnecessary, and the number of parts inside the apparatus can be reduced.

Next, the discharge belt mechanism of the staple unit II will be described with reference to FIGS. 13 and 14. FIG. Side plate 20
A drive shaft 226 is attached to the upper end portion of each of the drive shafts 207 and 207 so that the drive shaft 226 is bridged therebetween, and a drive pulley 227 is fixed to a substantially central portion of the drive shaft 226. A fixed pulley 228 is provided below the drive pulley 227, and an endless discharge belt 229 is stretched between the pulleys 227. An intermediate portion of the discharge belt 229 is hung on the idle pulley 230, and is guided by a guide plate 250 disposed inside the discharge belt 229 so as to prevent bending and displacement. Further, a belt drive motor M22 is fixed to the side plate 206, and a pulley 231 attached to an output shaft of the belt drive motor M22 and a pulley 232 attached to one end of the drive shaft 226. The belt 233 is stretched between the belts to transmit the belt driving force. In the middle of the surface portion of the discharge belt 229, a protruding claw 234 is provided so as to grip the sheet bundle from below. As shown in FIG. 1, a home position sensor 235 for detecting the position of the claw 234 is provided inside the ejection belt 229, and the home position (HP) of the claw 234 is detected by the home position sensor 235. Is done. The transport speed V ₂ of such a discharge belt 229 is
(V ₂ ≧ V ₁ ) is set so as to be slightly higher than the paper discharge linear velocity V _{1 of the} paper discharge roller 219, so that the paper bundle of the next job is not discharged together with the already bound paper bundle. Is configured.

Further, a rear end abutting portion 250a formed in a hook shape is provided at a lower end portion of the guide plate 250,
The lower edge of the sheet bundle is held by the rear end abutting portion 250a.

As described above, each function of the stapler S is configured to form one unit, and the guide rail 23
6, 237 (see FIG. 1) so that it can be pulled out to the near side.

The paper discharge tray mechanism of the staple unit II is a paper discharge tray mechanism as shown in FIG.
The base of 220 is fixed on the tray base 238. Tray stand
A guide roller 239 is rotatably mounted on the 238, and the guide roller 239 engages with a guide rail (not shown) so that the paper discharge tray 220 moves up and down together with the tray table 238. ing. Further, the tray table 238 is given an urging force upward by a lift spring 240.

A driving force is transmitted to the transport rollers 241, 242, and 243 by a belt (not shown) from the transport motor M23.
The fur brush 24 is attached to the rotating shaft 244 of the discharge roller 219.
5a and 245b are attached, and these fur brushes 245a and 245b are rotated and driven in synchronization with the discharge roller 219. The bristle tips of the fur brushes 245a and 245b are in contact with the guide plate 250. Projecting ribs 250b are formed on the guide plate 250 so as to project to the front side, and the transfer paper is moved to the rear side by the projecting ribs 250b and the pressing force by the bristle tips of the fur brushes 245a and 245b. It is configured to be bent and deformed into a wavy shape so that it can have a certain waist so as not to buckle.

Furthermore, as shown in FIG. 15, the protruding amount from the rotation center of the discharge roller 219 of the paper output unit on the guide plate 248 L is set larger than the projection amount l ₁ of transmitted Paper Therefore, even if the transfer paper does not fall below the fur brushes 245a and 245b and enters between the upper guide plate 248 and the fur brushes 245a and 245b, the fur brushes 245a and 245b
The rear end of the transfer paper is scraped down by the bristle tips.

Operation of binding processing The binding processing operation of the transfer paper will be described.

First, a stapling operation is selected by a stapling key, a document (N sheets) is set on a document feeding table (RDH, not shown), and after a copy number (K portion) is input by a numeric keypad, a copy start button is pressed. When pressed, a copy size signal is input from the image forming apparatus main body to the finisher (image forming post-processing apparatus), and the finisher 10
0 determines whether the size of the transfer paper is a size that can be carried into the staple unit II. In the case of a size that can be loaded into the staple unit II, the discharge belt 229
Is determined at the home position (HP). When not at the home position, the claw 234 of the discharge belt 229 is returned to the home position by the belt drive motor M22. It is detected whether the stapler S is at the home position, and if it is at the home position, the stapler S moves based on the copy size signal,
If not at the home position, after moving to the home position, the stapler S based on the copy size signal.
Moves.

Also, it is detected whether or not the jogger fences 217, 218 are at the home position (HP). If the home position is detected, the jogger fences 217, 218 move to a predetermined location based on the size signal, If the home position is not detected, move until the home position is detected, detect the home position, and then move to the predetermined position according to the size signal.
18 are configured to move. The moving place at this time moves to a position a mm away from the size width on one side and 2 mm away on both sides.

Thereafter, when the leading end of the transfer sheet is detected by the entrance sensor SN1, the switching guide member 105 is switched to the staple tray by the switching solenoid 251 to guide the transfer sheet. When the rear end of the transfer paper passes through the entrance sensor SN1, high-speed feeding is performed. Inlet sensor S
The switching solenoid 251 is turned off after a lapse of a predetermined time after passing through N1, that is, a time until passing through the switching guide member 105. Thereafter, the transfer paper is discharged to the staple tray by the discharge roller 219, and when the discharge process is being performed, the charge charged on the transfer paper is removed by the charge removing brush 249 fixed to the discharge portion upper guide plate 248. It is supposed to be. The discharge roller 219 is provided with a brim, so that the transfer paper is bent into a wave shape and a waist is provided. When the rear end of the transfer paper passes through the discharge roller 219, the rear end of the transfer paper is pushed down by the coaxial fur brushes 245a and 245b so that the rear ends of the transfer paper 250a, 246a and 247a are abutted. Be sent. Jogger fence that has been waiting until a predetermined time has passed after passing through the lower paper ejection sensor SN11
The forward / reverse rotation of the drive motor M21 of 217 and 218 is repeated once or twice, whereby the transfer paper is aligned in the width direction, and after such paper alignment processing is performed, the transfer paper is returned to the standby position. This paper alignment operation is repeated for each transfer sheet,
The process is performed until a job end signal is issued from the image forming apparatus main body.

Next, when an end signal of one job is input from the image forming apparatus main body, the above operation is executed again, and the transfer paper bundle is pressed in the width direction by the jogger fences 217 and 218. Then, the drive motor 252 in the stapler S starts driving, and the transfer paper bundle is bound. In this binding operation, it is determined whether or not one-shot operation is performed. In the case of one-shot operation, the jogger fences 217 and 218 are output after the end of the binding operation.
Moves to a position slightly escaped from the paper bundle. For two or more shots, use the stapler movement motor M20
Is moved to a predetermined position, the binding operation is performed again, and after the binding operation is performed, the jogger fences 217 and 2
18 is returned to the position where it escaped slightly from the paper bundle.

The operation of the reference fences 246 and 247 at this time will be described. First, the lower end engaging portion of the reference fence 247 at the left end in FIG. 10A is fitted to the stapler S, and in this state, the stapler S Move to the right in FIG. Then, as the stapler S moves, the standard fence 24
7 is moved to the position shown in FIG. At this time, the other reference fence 246 is also moved symmetrically (in the embodiment shown in FIG. 10B, the reference fence 246 is always
A (iii)), FIG. 10A (ii)
It is brought to the position shown in i). When the stapler S further moves rightward in FIG. 10A from the position shown in FIG. 10A (i), the stapler S moves downward and separates from the reference fence 247. Therefore, the reference fence 247 and the reference fence 246 are respectively stopped at the positions shown in FIGS. 10A (i) and 10 (iii). When the stapler S moves to the upper position shown in FIG. 10A (iii) through the center position shown in FIG. 10A (ii),
The stapler S is fitted into the engaging portion of the reference fence 246 waiting at that position, whereby the stapler S and the reference fence 246 are integrally moved to the right end side in FIG. 10A. At this time, the other reference fence 247 is also moved symmetrically, and is moved to the original left end position.

In the second embodiment shown in FIG. 10B, first, the lower end engaging portion of the reference fence 247 at the left end of FIG. 10B is fitted to the stapler S, and in this state, the stapler S B moves rightward. Thereafter, with the movement of the stapler S, the reference fence 247 is moved toward the center and moves to the position shown in FIG. 10B (i). At this time, the other reference fence 246 has already been brought to the position shown in FIG. 10B (iii) by the urging force of the spring 288.

When the stapler S further moves rightward in FIG. 10B from the position shown in FIG. 10B (i), the stapler S moves downward and separates from the reference fence 247.

When the stapler S moves to the upper position shown in FIG. 10B (iii) through the center position shown in FIG. 10B (ii), the stapler S engages with the engaging portion of the reference fence 246 waiting at that position. The above-mentioned stapler S is fitted, whereby the stapler S and the reference fence 246 are integrally formed.
B moves to the right end side against the urging force of the spring 288. However, the other reference fence 247 does not move symmetrically, and the urging force of the spring 289 causes the reference fence 247 to move as shown in FIG.
It is in the state of staying at the position (i).

Such a stapler S and reference fences 246, 247
By performing the above operation, the binding operation can be performed at an arbitrary position other than the range where the stapler S is at the lower position.

At this time, the discharge belt 229 is rotated in the direction shown in FIG. 12 and the claw 234 pushes up the rear end of the transfer paper bundle, and the transfer paper bundle is transferred to the discharge tray 220 in the same direction as the discharge direction to the staple tray. Is discharged.

It is determined whether or not the last set number of copies (K portions) has been completed. At the time of completion, the jogger fences 217 and 218 and the stapler S are moved to the home position, and if not completed, the above-described operation is executed again. You.

Vertical movement of the discharge tray In such a device, the vertical movement of the discharge tray 106 is performed by the CPU by first checking the output state of the upper limit sensor SN4, the lower limit sensor SN5, and the paper surface detection sensor SN3 when the power is turned on or when the mode is selected. Check and eject tray 106
Is determined at this time. If the upper limit sensor SN4 and the paper surface detection sensor SN3 are set to ON, the vertical drive motor M3 is turned on, and the discharge tray 106 is lowered to a point where the paper surface detection sensor SN3 is turned off. If only the upper limit sensor SN4 is turned on, nothing is executed. When the upper limit sensor SN4, the lower limit sensor SN5, and the paper surface detection sensor SN3 are all turned off, the vertical drive motor M3 is turned on, and the discharge tray 106 is raised until the upper limit sensor SN4 or the paper surface detection sensor SN3 is turned on. Then, when the paper surface detection sensor SN3 is turned on, it is lowered until the paper surface detection sensor SN3 is turned off. When only the paper surface detection sensor SN3 is turned on, the vertical drive motor M3 is turned on, and the discharge tray 106 is lowered until the paper surface detection sensor SN3 is turned off. When the lower limit sensor SN5 and the paper surface detection sensor SN3 are ON, it is determined that the transfer paper on the discharge tray 106 is full of the loaded capacity. When a signal indicating that the paper is full is sent to the image forming apparatus main body, the vertical movement drive motor M3 is turned on a predetermined time after the transfer paper is removed, and the upper limit sensor SN4 or the paper surface detection sensor SN3 is turned on. The discharge tray 106 is raised. When the paper surface detection sensor SN3 is turned on, the discharge tray 106 is lowered until the paper surface sensor SN3 is turned off. When restarting in the same mode, the same operation as when the power is turned on and when the mode is selected is performed in synchronization with the copy start signal of the main body.

During copying and at the end of copying, the paper detection sensor SN
When 3 is turned on, the vertical drive motor M3 is turned on and the paper surface detection sensor SN3 is turned off, so that the discharge tray 106 is lowered. When the lower limit sensor SN5 is turned on by repeatedly performing this operation, a signal indicating that the transfer tray is full of transfer sheets is transmitted to the image forming apparatus main body. When this operation is overlapped with the tray shift operation, the tray shift operation is prioritized. During the shift operation, the operation is waited and executed after the shift operation is completed. After the final paper has passed through the main body paper discharge sensor SN6, a finisher stop signal is transmitted.When this signal is received, the final paper is discharged to the discharge tray 106, and then the vertical drive motor M3 is turned on. The discharge tray 106 is lowered by a predetermined amount, so that the transfer paper can be easily taken out.

Next, when the power is turned on, the shift operation is not performed,
When the shift or proof mode is selected and the mode signal is received, the shift motor M2 is turned on, the discharge tray 106 is moved, and the shift detection sensor 117 is turned on, so that the shift motor M2 is turned off. By this operation, the transfer paper remaining on the discharge tray 106 and the transfer paper of a job to be newly performed are sorted. Such an operation is on standby during the tray up / down operation, and is executed after the up / down operation is completed. By doing so, even if the transfer paper remains on the discharge tray 106, the transfer paper is pressed by the pressing roller 108, and the transfer paper is not shifted during the shift.

At the time of copying and at the end of copying, a shift signal is transmitted when the last sheet of the copy set passes through the main body discharge sensor SN6, and the finisher receives this signal and the rear end of the last sheet passes over the discharge sensor SN2. After a predetermined time has elapsed, the shift motor M2 is turned on, and the shift operation is started. When the shift detection sensor 117 is turned on, the shift motor M2 is turned off. The above operation has priority over the tray up / down operation. During the shift operation, the tray up / down movement is on standby, and the up / down movement is performed after the shift is completed. This prevents the paper from shifting due to the shift.

When the restart is performed in the same mode, the shift operation is not performed at the start of the copy, and the same operation as that at the time of the copy is performed during the copy.

Jogger fence operation Next, the jogger fence operation will be described.

First, when the power is turned on and the mode is selected, the jogger home position sensor 224 and the tray paper sensor SN9 are set.
Is checked by the CPU and the following operation is performed.

If only the jogger home position sensor 224 is turned on, nothing is executed. If the tray paper presence / absence detection sensor SN9 is ON, a signal indicating that transfer paper remains on the staple tray is transmitted to the image forming apparatus main body. When the jogger home position sensor 224 and the tray paper presence sensor SN9 are turned off, the jogger drive motor M21 is turned on, the jogger fences 217 and 218 move toward the home position, and when the jogger home position sensor 224 is turned on, the jogger is turned on. The drive motor M21 turns off.

During copying, at the end of copying, and at the time of copying restart, if a paper size signal is received after the copy of the image forming apparatus main body is started, the jogger drive motor M21 is turned on, the jogger fences 217 and 218 are moved, and the paper width is changed. It is stopped at a position a predetermined amount before the size and enters a standby state.
When a predetermined time has elapsed after the transfer paper has passed the paper discharge sensor SN11, the jogger drive motor M21 is turned on, the jogger fences 217 and 218 at the standby positions are moved, the paper alignment is executed, and the jogger fences are returned to the standby position again. It is. At this time, the jogger drive motor M21 repeats forward / reverse rotation once to several times, whereby the jogger fences 217 and 218 are aligned in the paper width direction. Such an operation is performed every time the transfer paper is discharged onto the staple tray.

When the last sheet of the copy set passes through the main body discharge sensor SN6, a staple signal is transmitted, and upon receiving this signal, the last sheet is discharged to the staple tray, and after the above-described paper alignment operation is performed, the width direction of the paper is changed. The jogger fences 217 and 218 are moved to the holding positions and stopped. When the stapling operation is completed, the jogger fences 217 and 218 move to positions slightly away from both ends in the width direction of the paper. Then, the transfer paper bundle is discharged to the discharge tray 220 by the discharge belt 229. By doing so, it is possible to prevent the paper from shifting during stapling, and to use the jogger fences 217 and 218 as a guide in the width direction when discharging the recording bundle.

When the above operation is repeated for the number of copies and the final transfer paper bundle is discharged onto the discharge tray 220, the jogger fence drive motor M21 is turned on, and the jogger fences 217 and 218 move toward the home position. When the jogger home position sensor 224 turns on, the jogger drive motor M21 turns off.

Other operations in the stapling unit II When the power of the stapler operation is turned on and when the mode is selected, the CPU checks the output state of the single rotation sensor SN7, the needle presence sensor SN10, and the stapler home sensor 212, and executes the following operations. .

If the one-rotation sensor SN7 is turned off and the tray discharge sensor SN9 is turned on, it is determined that stapling is defective, and a stapler abnormality signal is transmitted to the image forming apparatus main body.

When the staple sensor SN10 is in the off state, a stapler stapleless signal is transmitted to the image forming apparatus main body. If the stapler home sensor 212 is on, nothing is executed. When the stapler home sensor 212 is turned off and the one-rotation sensor SN7 is turned on, the stapler moving motor M39 is turned on, and the stapler S moves in the home position direction. When the stapler home sensor 212 turns on,
The stapler movement motor M39 is turned off. If the one-rotation sensor SN7 is off, it is determined that a staple miss or a jam has been cleared, and the apparatus stands by in that state. When the one-rotation sensor SN7 is turned on by artificial processing, the stapler moving motor M39 is turned on, the stapler is moved in the home position direction, and the stapler moving motor M39 is turned off after the stapler home sensor 212 is turned on. ing.

At the time of copying, at the end of copying, and at the time of copying restart, the stapler moving motor M39 is turned on after the paper size signal is received after the copying start of the image forming apparatus main body, and a predetermined amount of stapling is performed at a position corresponding to the paper size. S is moved. Next, the staple ON signal is transmitted from the main body after the final sheet of the copy set passes the main body discharge sensor SN6, and when the signal is received, the final sheet is discharged onto the staple tray and the jogger fence is output.
When both ends of the transfer paper bundle 217 and 218 in the width direction are pressed, the staple motor 252 is turned on to perform the stapling operation. When the one-rotation sensor SN7 is turned on, the staple motor 252 is turned off. In the case of the two-position stapling mode, the stapler moving motor M39 is turned on and the stapler moving motor M39 is turned off when the stapler S is moved by a predetermined amount in accordance with the paper size, and the two stapling operations are performed. When such a stapling operation is repeatedly performed for the number of copies and the final transfer paper bundle is bound, the stapler moving motor M39 is turned on, the stapler S moves in the home position direction, and the stapler home sensor 212 is turned on. And the stapler movement motor M39 turns off.

Operation of Discharge Belt in Staple Unit II Next, the operation of the discharge belt will be described.

When the power is turned on and the mode is selected, the CPU checks the output state of the belt home sensor 235, the tray discharge sensor SN9, and the rotation sensor SN7, and executes the next operation. If the belt home sensor 235 is turned on and the tray discharge sensor SN9 is turned off, nothing is executed. When both the belt home sensor 235 and the tray discharge sensor SN9 are turned off, it is determined that the discharge belt 229 has not returned to the home position, the belt drive motor M22 is turned on, and the discharge belt 229 operates.
When the belt home sensor 235 is turned on, the belt drive motor M22 turns off. If the belt home sensor 235 is turned off and the tray discharge sensor SN9 is turned on and the tray discharge sensor SN9 is turned on, it is determined that the discharge is defective and the transfer paper bundle on the staple tray is removed. A signal is output to the image forming apparatus main body. After the transfer paper bundle is removed, the belt drive motor M22 is turned on to operate the discharge belt 229, and when the belt home sensor 235 is turned on, the belt drive motor M22 is turned off.

At the time of copying and at the end of copying, when the last sheet of the copy set is discharged onto the staple tray and the stapler S performs the binding operation of the transfer sheet bundle, the one-rotation sensor SN7 is turned on to perform the binding processing normally. It is confirmed that. Thereafter, the belt drive motor M22 is turned on, the discharge belt 229 operates, and the bound transfer paper bundle is discharged onto the discharge tray 220, and the belt home sensor 235
Is turned on, the belt drive motor M22 is turned off.
Such an operation is repeated for the number of copies.

Operation of the shift tray system in the staple unit II In the shift tray system of the transport system, a finisher start signal is transmitted when the image forming apparatus main body starts copying. Is turned on, and low-speed operation is performed at the same speed as the main body linear speed. When the transfer sheet is discharged from the image forming apparatus main body and the entrance sensor SN1 is turned on, a timer is set and it is monitored whether the transfer sheet passes through the entrance sensor SN1 within a predetermined time, and the jam is detected. When the rear end of the transfer sheet passes through the entrance sensor SN1 and the entrance sensor SN1 turns off, the transport motor 190 is switched to high-speed operation, and the transport speed is increased. Further, a timer is set, and it is monitored whether or not the leading end of the transfer sheet turns on the sheet discharge sensor SN2 within a predetermined time, thereby detecting a jam. When a predetermined time elapses after passing through the entrance sensor SN1, the transport motor 190 is returned to the low-speed operation to prepare for the next transfer paper to be carried in. When the paper output sensor SN2 is turned on by the transfer paper,
A timer is set, and whether or not the transfer paper passes within a predetermined time is monitored to detect a jam.

By repeatedly performing such an operation, in the case of the shift tray mode, when a shift signal is received, a shift OK signal is output after a predetermined time has elapsed after the last sheet of the copy set has passed the sheet ejection sensor SN2, The timing at which the shift operation is performed is measured. When the final transfer paper is ejected from the main unit, the finisher stop signal is sent.If that signal is received, the paper is conveyed after the final transfer paper has passed the paper ejection sensor SN2 and after a predetermined time has elapsed. The motor 190 is turned off.

Operation of Staple Tray System in Staple Unit II Next, in the staple tray system, when the image forming apparatus main body starts copying, a finisher start signal is transmitted. Is turned on, and the low-speed operation is executed at the same speed as the linear speed of the image forming apparatus main body. When the transfer paper is discharged from the main body and the entrance sensor SN1 is turned on, the switching solenoid 251 and the lower conveyance motor 191 are turned on at a low speed operation, a timer is set, and whether the transfer paper passes through the entrance sensor SN1 within a predetermined time is determined. Is monitored to detect a jam. The rear end of the transfer paper passes through the entrance sensor SN1 and the entrance sensor SN1 is turned off.
The lower transport motor 191 is switched to high-speed operation, and the transport speed is increased. Further, a timer is set, and it is monitored whether or not the leading end of the transfer sheet turns on the lower sheet discharge sensor SN11 within a predetermined time to detect a jam. The switching solenoid 251 is turned off after a predetermined time has passed after the rear end of the transfer paper has passed through the entrance sensor SN1. When the lower sheet discharge sensor SN11 is turned on by the transfer sheet, a timer is set, and whether or not the transfer sheet passes within a predetermined time is monitored to detect a jam. Transfer paper is lower paper discharge sensor SN11
When a predetermined time elapses after passing through, the lower transport motor 191 is switched to low-speed operation.

By repeating such an operation,
When the staple signal is received, a predetermined time elapses after the last sheet of the copy set has passed through the lower sheet ejection sensor SN11, the jogger fence performs the sheet alignment operation, and then measures the timing at which the staple operation is performed.
When the final transfer paper is discharged from the main body, a finisher stop signal is transmitted.When the signal is received, the conveyance motor 190 is output when a predetermined time elapses after the final transfer paper passes the paper discharge sensor SN11. And the lower transport motor 191 turns off.

Finisher control system Further, as shown in FIG. 16, the CPU on the image forming apparatus side
And the CPU on the finisher side are connected by optical fiber.

In the shift tray section of the finisher, CPU 100
0, the transfer motor 100 via the servo control circuit 1001
2 are connected to each other, and the forward / reverse driver circuit 1
A vertical motor 1004 is connected via 003, and a shift motor 1006 is connected via a forward / reverse driver circuit 1005. Further, signals from various sensors and various switches 1007 are input to the CPU 1000.

Further, the CPU 1000 is connected to the staple unit via an interface I / O 1030. And for the above interface I / O, staple unit 1
008 is connected, a transport motor 1011 is connected via a servo control circuit 1009, a discharge motor 1013 is connected via a servo control circuit 1012, and a jogger motor 1015 is further connected via a stepping motor control circuit 1014. Is connected, stepping motor control circuit 1016
The stapler moving motor 1017 is connected via the. Furthermore, signals from various sensors and various switches 1018 are input to the interface I / O 1030.

〔The invention's effect〕

As described above, in the paper processing apparatus according to the present invention, the stapling section includes a transfer paper receiver, a stapling device for binding the transfer paper on the transfer paper receiver, and a transfer paper transporter for transferring the transfer paper on the transfer paper receiver. A reference fence and a jogger fence are provided, each of which is aligned in the direction perpendicular to the transfer direction and the transfer paper transport direction. The jogger fence and the reference fence move independently, and each is stopped and positioned at a desired position. The reference fence for paper alignment is moved in conjunction with the above stapling device, so staples can be moved arbitrarily with a simple mechanism to the appropriate place corresponding to the transfer paper, greatly improving the freedom of binding operation. Can be done. Further, since the reference fence moves according to the paper size, the paper bundle can be aligned with high accuracy without inclination.

[Brief description of the drawings]

FIG. 1 is an explanatory side view showing an overall configuration of an image forming post-processing apparatus to which the present invention is applied, FIG. 2 is an external perspective view showing a discharge section to a discharge tray, and FIG. 3 is a tray in a tray shift swing mechanism. FIGS. 4 and 5 are a plan explanatory view and an external perspective view showing a drive system of a tray shift rocking mechanism, and FIG. 6 is an external perspective view showing a paper discharge holding mechanism. 7 and 8 are side explanatory views and an external perspective view showing a paper discharge tray vertical mechanism, FIG. 9 is a schematic side view showing a schematic structure of a paper discharge processing system, and FIGS. 11 is a front explanatory view and a bottom explanatory view showing a schematic configuration of a staple portion, FIG. 12 is a side explanatory view showing a stapler mounting structure, FIG. 13 is an external perspective view of a discharge device, and FIG. Figure A
FIG. 15 is an enlarged side view of the staple discharging section, and FIG. 16 is a block diagram showing a control system for implementing the present invention. EXPLANATION OF SYMBOLS 100 …… Finisher 219 …… Discharge roller 217,218 …… Shogger fence 229 …… Discharge belt, 250 …… Guide plate M22 …… Belt drive motor 246,247 …… Reference fence 250a, 246a, 247a …… Back end Butt 288, 289 Spring 290 Belt 290a Pulley I Shift sorter II Stapler III Staple

Continuation of front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B65H 31/00-31/40 B65H 37/04

Claims (5)

(57) [Claims] 1. A paper processing apparatus for binding a conveyed paper with a staple unit to perform a bookbinding process, wherein the staple unit includes a paper receiver, a stapler for binding paper on the paper receiver, and a paper stapler. A plurality of reference fences and a jogger fence for aligning the paper in a paper transport direction and a direction orthogonal to the paper transport direction are provided, and the jogger fence and the plurality of reference fences independently move; At least one of the reference fences is provided so as to be movable in a direction orthogonal to the paper transport direction so as to support the paper on the paper receiver in a region left of the center of the paper on the paper receiver, The other reference fence is provided so as to be movable in a direction perpendicular to the paper transport direction so as to support the paper on the paper receiver in a region to the right of the center of the paper on the paper receiver. A paper processing apparatus, wherein the hanger fence and each of the plurality of reference fences are stopped and positioned at desired locations. 2. A paper processing apparatus for binding a conveyed paper with a staple unit to perform a bookbinding process, wherein the staple unit includes a paper receiver, a stapler for binding paper on the paper receiver, and a paper stapler. A reference fence and a jogger fence are provided to align the paper in a paper transport direction and a direction perpendicular to the paper transport direction, respectively.The jogger fence and the reference fence independently move, and each is at a desired location. Stopped and positioned, the jogger fence is provided so as to be controlled independently of the stapling device, and the reference fence is fitted to the stapling device,
A paper processing apparatus provided with an engaging portion for transmitting a moving force of a stapling device to a reference fence. 3. The jogger fence according to claim 2, wherein the two movable reference fences, which are arranged symmetrically and execute a paper alignment process in a paper transport direction, are engaged with the jogger fence independently. A paper processing apparatus, wherein the paper processing apparatus moves along with the movement of the stapling apparatus, and is urged in the direction of the transport center by connected urging means. 4. The jogger fence according to claim 2, wherein the two movable reference fences, which are arranged symmetrically and execute a paper alignment process in a paper transport direction, are engaged with the jogger fence independently. A paper processing apparatus, wherein the paper processing apparatus moves along with the movement of the stapling device by a unit, and based on the movement of one of the reference fences, the other reference fence moves in conjunction with the opposite direction. 5. A paper processing apparatus for binding a conveyed paper with a staple unit to perform a bookbinding process, wherein the staple unit includes a paper receiver, a stapler for binding paper on the paper receiver, and a paper stapler. A reference fence and a jogger fence are provided to align the paper in a paper transport direction and a direction perpendicular to the paper transport direction, respectively.The jogger fence and the reference fence independently move, and each is at a desired location. The two movable reference fences, which are stop-positioned and are symmetrically arranged to perform the paper alignment process in the paper transport direction, are provided so as to be controlled independently of the stapling device, It is characterized in that one reference fence moves independently of the jogger fence and the other reference fence moves in the opposite direction. Paper processing apparatus.