JPH0363192A - Image forming post-treatment method - Google Patents

Abstract

PURPOSE:To prevent the generation of jamming based on the over of stapling capacity by discharging a recording paper group without performing stapling treatment when a prescribed number or more of recording papers are sent in a stapling apparatus part. CONSTITUTION:When the recording paper discharged by the paper discharge roll of a copier main body is detected by an inlet sensor SN1, the number of recording papers is counted on the basis of the detection signal of said sensor and the number of copy papers stacked on a stapling part II is detected. When the number of copy papers stacked on the stapling part exceeds a set number-of- copy paper value, the belt driving motor 22 of a discharge belt mechanism is turned ON to drive a discharge belt 17 and the copy recording paper group already stacked on a stapling apparatus part is discharged to a paper discharge tray 53 by said belt without being stapled. The remaining papers fed in the stapling apparatus part are once stacked on the stapling apparatus part and, after stacking is completed, said recording papers are discharged to the paper discharge tray 53. By this method, the generation of jamming is prevented and copy processing operation is not interrupted in the prescribed number of papers.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an image formation post-processing method for performing post-processing such as stapling on recording paper discharged from an image forming apparatus such as a copying machine or a printer.

[Conventional technology] Conventionally, for example, Japanese Patent Application Laid-Open No. 62-20046.

JP-A-62-191375, JP-A-62-176
No. 246, JP 62-290669, JP 59-82263, JP 63-101268
As described in the publication, the recording paper sent out from the image forming apparatus is stored in a staple tray, the recording papers are stapled, and the stack of bound recording papers is dropped into a lower tray and discharged. An image post-processing device configured with the following is generally known.

[Problems to be Solved by the Invention] However, in such conventional image forming and post-processing devices, when recording paper is fed in more than the stapling capacity of the stapling device, jams may occur due to overstapping capacity. The copy processing operation may be interrupted at a specified number of sheets that can be stapled, and as a result, the copying operation may not be carried out smoothly.

Therefore, the present invention solves the problems of the conventional device described above,
When more recording paper than the specified number of sheets is fed into the stapling device section, it is possible to prevent inconveniences such as jams due to exceeding the stapling capacity, and also prevent the copy processing operation from being interrupted when the specified number of sheets is reached. It is an object of the present invention to provide an image formation post-processing method that allows copying operations to be carried out smoothly.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method for binding the recording sheets discharged from an image forming apparatus by using a stapling device to staple the edges of the recording sheets after aligning the recording sheets. In the image forming post-processing method in which the stapled recording paper group is discharged to a paper output tray, the number of recording papers carried into the stapling device section is counted, and the count value is set. If the value exceeds the value, the recording sheets already stacked in the stapling device section are ejected to the paper ejection tray, and the remaining recording sheets carried into the stapling device section are temporarily stacked in the stapling device section.

After stacking, these recording sheets are discharged to a paper discharge tray, and stapling processing is not performed on the group of recording sheets.

[Operation] In a means having such a configuration, when more than a specified number of recording sheets are fed into the stapling device section,
The group of recording sheets is ejected without being stapled, thereby preventing inconveniences such as occurrence of jams due to excess stapling capacity.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

The finisher shown in FIG. 1 is installed on the side of the image forming apparatus (not shown), and consists of a shift sorting section (2) on the upper side and a staple section (3) on the lower side. .

First, in the shift sorting section 1, a plurality of conveyance rollers and driven rollers that follow the conveyance rollers are arranged on the conveyance path. The rotation shaft of the first conveyance roller 101 is connected to the rotation shaft of the conveyance driving motor M1 via the first timing belt 104, thereby obtaining driving force. The rotation axis of the first conveyance roller 101 is connected to the rotation axis of other conveyance rollers, the rotation axis of the discharge roller 102, and also the rotation axis of the gathering fur brush 103 by a second timing belt (not shown). It is designed to drive these.

Further, an entry sensor SNI is provided immediately before the most upstream transport roller 101, and a paper discharge sensor SN2 is provided immediately before the discharge roller 102. It is now being detected. A switching pawl 105 is disposed downstream of the first conveyance roller 101, and by the action of a driving solenoid 230 and a spring (not shown), the conveyance direction is controlled by the stapling part (2) and the shift sorting part (described later). It is possible to change in any of the four directions.

As shown in FIGS. 2, 3 and 4.

In the vicinity of the paper ejection port, a fur brush 103 for paper gathering is arranged directly below the paper ejection roller 102, and the recording paper dropped onto the ejection tray 107 is gathered in the direction of the abutment plate 106 by its rotation. The recording paper is abutted against an abutment plate 106, thereby aligning the trailing edges of the recording paper.

Next, in the shift drive mechanism, as shown in FIG. 3, the abutment plate 106 and the discharge tray 107 are formed with unevenness, and are configured to mesh with each other. As a result, the output tray 107 can be freely moved in the up and down direction (vertical direction on the paper in FIG. 3) with respect to the abutment plate 106, and is interlocked with the abutment plate 106 in the front and back direction (in the horizontal direction on the paper in FIG. 3). It is designed to be moved. In FIG. 4 and FIG.
2, and is configured to be freely movable in the front and rear directions. Further, as shown in FIG. 5, the abutment plate 1061 is eccentrically connected to the crank 113 via the arm rod 115. Crank 1 above
The rotating shaft 13 is arranged parallel to the central axis of the copying machine.

A gear train 114 is disposed on a removable bracket 116 that projects vertically from the side plate 100.
14 through the above crank 113 force S shift motor M
It is connected to 2. By driving the shift motor base 2, the crank 113 is driven, and the abutment plate 106 is reciprocated in the front and rear direction by its eccentric rotation action. For this reason, the abutting plate 106
The output tray 107 is regulated in the front and rear direction.
It is also adapted to be moved back and forth in the front and rear directions. Furthermore, two shift detection plates 118 are provided protruding from the abutment plate 106 and are arranged at an interval approximately equal to the amount of movement by the crank 113.
When the shift detection sensor 117 facing the abutment plate 106 detects this, it is detected that the abutment operation and the train lift operation have been moved by one stroke.

Further, as shown in FIG. 6, the presser roller 108 is
is supported so as to be vertically movable and rotatable, thereby pressing the discharge 1-lay 107 and the upper surface of the accumulated recording sheets with its own weight. The recording paper slips under the presser roller 108 by gravity and the conveying force of the paper gathering fur brush 103 and is abutted against the abutment plate 106. When the discharge tray 107 is shifted by the pressing force of the press roller 108, the recording paper is prevented from shifting.

A paper surface detection sensor SN3 is arranged on the main body side facing the presser roller 108. When the position of the presser roller 108 is raised due to accumulation of recording paper, the paper surface detection sensor SN3 detects the presser roller support bracket 120. , and it is known that the paper surface or the top surface of the output tray has reached a specified height.

Further, in the vertical movement mechanism, as shown in FIGS. 7 and 8, the discharge tray 107 is fixed to a tray support stand 110. Tray support stand ↓10 is bearing 1
The tray is supported by a tray vertically movable table 109 through a tray 10a so as to be movable back and forth.

Therefore, as described above, the shifting operation by the abutment plate 106 can be performed by the tray vertical movement table 109. As also shown in FIG.
Fixed. The third timing belt 120 is 1
One each is provided on the outside of the front and rear side plates 100, and each has a vertical drive pulley 121 and a driven pulley 12.
2nd place has been passed. Vertical movement drive pulley 12 King is
Both are fixed to a vertical drive shaft 123 that penetrates between the side plates, and a gear 124 containing a one-way clutch is attached to this vertical drive shaft 123. The one-way clutch is configured to transmit a force in the direction of lifting the ejector 1 to the lay 107 to the vertical movement shaft.6 The gear 124 is connected to a gear train, a worm wheel 125°, a worm 126, etc. It is connected to the vertical active motor M3 via the vertical active motor M3. In addition, a bearing 127 is attached to the side surface of the vertically movable support base 109, and when it comes into contact with the vertically movable guide rail 128 fixed to the side plate 100, the vertically movable guide and the ejection are generated by the rotational moment due to the weight of the ejection tray. The tray is designed to prevent it from falling over.

With the above-described configuration, the lowering of the discharge tray 107 is normally stopped by locking the holding force of the worm 126 and the one-way clutch. Further, when the vertical active motor M3 is rotated in the direction in which the discharge tray 107 is raised, the one-way clutch is locked, the pulleys 121 and 122 are rotated, and the discharge tray 107 is thereby raised. When the vertical drive motor M3 is rotated in the downward direction of the discharge tray 107, the one-way clutch becomes free, and the discharge tray 107 is thereby moved downward by its own weight.

Further, as shown in FIG. 9, the timing belt 1
An upper limit sensor SN4 and a lower limit sensor SN5 are installed inside the tray 20 so as to face the output tray 107, and the upper and lower limits of the output tray 107 are detected by sensing the upper and lower detection plates 129, respectively. ing. Since the one-way clutch is in a free state when the ejection tray 107 is lowered, the opening force of the vertical drive motor M3 is not transmitted to the ejection tray 107, and even if the ejection tray 107 is stopped by an external force when it is lowered,
By idling the vertical movement/opening motor M3, troubles such as motor overload and fingers being pinched are prevented.

When the copy operation is started, the shift motor original 2 is opened and the crank 113 is rotated, so that the crank 1
At 13, the abutting plate 106 is moved in the front-back direction via the rod 115. Accordingly, the discharge tray 107, which is supported in a manner that engages with the unevenness of the abutment plate 106 and is movable up and down and back and forth, is moved in the front and back direction, and a shift operation is started. When the shift sensor 117 detects the other shift detection plate 118, which is different from the one shift detection plate 118 detected before the start of the shift operation, the shift motor base 2 is stopped by that signal and the shift operation is completed. Ru. After the shift operation is completed, the vertical movement opening motor M3 is opened in the tray upward direction to open the ejection tray 10.
7 is raised.

After the vertical movement starts, the support bracket 12 of the presser roller 108
0 is detected by the paper surface detection sensor SN3 or the upper limit sensor SN4 detects the vertical detection plate 129, the vertical movement opening motor M3 is stopped by that signal, and the raising of the discharge tray 107 is completed. Become.

When the paper surface sensor SN3 detects the support bracket 120, the vertical movement drive motor M3 is driven in the tray lowering direction, and the paper surface sensor SN3 detects the support bracket 120.
When it is no longer detected, the vertical movement opening motor M3 is stopped.

The recording paper discharged from the main body is received by a conveying roller 101 at the same linear velocity as the discharge speed from the main body.

As the recording paper is being conveyed, when the paper entry sensor SNI detects the trailing edge of the paper, the linear velocity is increased to a value greater than the ejection speed of the recording paper main body, and the trailing edge of the recording paper is detected by the entry sensor SNI.
The linear velocity is returned to the recording paper main body ejection speed after a specified period of time after being detected by the NI.

Thereafter, the paper is discharged onto the discharge tray 107.

The recording paper discharged to the discharge tray 107 is pressed by the holding roller 108 by gravity and the conveying force caused by the rotation of the fur brush 103.
The rear end is aligned by crawling under and abutting against the abutting plate 10G.

At this time, when a specified number of copies have been ejected, the shift motor original 2 is opened in response to the signal, and a shift operation is started. - When stroke shift 1~ is completed, shift motor original 2 is stopped. By this operation, the stacking position of the recording sheets on the discharge I-ray 107 is changed, and the recording sheets are sorted. When the series of copying operations is completed and the last sheet is ejected, the vertical movement drive motor M3 is opened in the downward direction in response to the signal, and the ejection tray 10
7 is lowered by a predetermined amount, the operation is terminated.

When a certain amount of recording paper is accumulated and the paper surface approaches the paper ejection port, a part of the presser roller support bracket 120 detects the paper surface detection sensor S.
When detected by N3, the vertical movement opening motor M3 is opened in the tray lowering direction by the signal, and the worm 12
The holding force of 6 and the lock of the one-way clutch are released, and the discharge tray 107 is lowered by its own weight.

As the output tray 107 is lowered, the paper surface is lowered.

When a part of the presser roller support bracket 120 is no longer detected by the paper surface detection sensor SN3, the vertical movement/opening motor M3 is stopped by the signal, and the holding force of the ohm 126 and the locking of the one-way clutch work to stop the ejection tray 107. be done.

As the output tray 107 is lowered, the upper and lower detection plates 129
The vertical movement drive motor M3 is stopped by the discharge when the lower limit sensor SN5 detects this, and the discharge tray 107 is prevented from being lowered any further.

In the stapler moving mechanism in the staple member, the stapler 8 is shown in FIGS. 1, 10, 11, and I2.

It is fixed to the stapler stand 31. The stapler stand 31 has a guide hole 3 of the stapler slider 30.
0b through a guide pin 32 so as to be movable in the twelfth direction. Further, a shaft 44 is fixed to the back side of the stapler stand 31, and a guide roller 34 is rotatably attached to the shaft 44. The upper part of the stapler slider 30 has side plates 41.4.
The hook is attached so as to be slidable in the direction perpendicular to the paper of FIG. The stapler slider 30 is rotatably abutted on the surface of the stay 43, thereby locking the stapler slider 30 in the rotational direction.

Further, a guide cam 35 is fixed to the stay 43, and the guide roller 34 is in rolling contact with a cam surface formed at the upper end side of the guide cam 35. This causes the stapler slider 30 to be reciprocated in the direction shown in FIG. 1O. At this time, the central portion of the guide cam 35 is formed to be concave downward, and the stapler slider 30 is moved along this concave portion.

A detection plate 30 is provided at the upper end of the stapler slider 30.
A is provided, and the home position (HP) of the stapler 8 is detected by this detection plate 30a shielding the detection part of a home position sensor 40 provided on the main body side. A stepping motor 39 for moving the stapler is attached to the side plate 41, and an intermediate portion of a belt 38 driven by the stepping motor 39 is fixed to the stapler slider 30, and the belt 38 is driven by the stepping motor 39.
0 is moved back and forth in the left-right direction in FIG.

Next, in the moving mechanism of the jogger fence, the 10th
As shown in FIG.
A left slider 8 and a right slider 7 are attached to a jogger fence rod 9 that is passed between them so as to be able to move back and forth. Fences 5 are each fixed. The left jogger fence 6 and the right jogger fence 5 have the function of aligning the paper stack during the stapling operation, and extend from the vicinity of the ejection roller 3 to the vicinity of the paper ejection tray 53, so that the paper stack after being stapled is It has a function as a guide member when discharging.

At the lower ends of these left jogger fence 6 and right jogger fence 5, rear end fences 6a, 5a are provided to hold the lower end edge of the stapled paper bundle.

A middle portion of a belt 10 driven by a jogger fence driving motor 11 is fixed to the left slider 8 and right slider 7. The left slider 8 and the right slider 7 are fixed to different sides of the belt 10, respectively, so that the left jogger fence 6 and the right jogger fence 5 are symmetrically reciprocated in the left-right direction in FIG. There is. Guide rollers 15 are attached to the upper rear sides of the left jogger fence 6 and the right jogger fence 5, and the guide rollers 15 roll onto guide stays 16 that are hooked to the tops of both side plates 41 and 42. It is abutted like this. The left slider 8 is provided with a detection plate 8a, and this detection plate 8a blocks the detection part of the home position sensor 14 provided on the main body side, thereby controlling the home position of both jogger fences 6.5. (HP) is now detected. As shown in FIG. 15, a curl presser 64 is provided at the lower end of the left jogger fence 6 and the right jogger fence 5, which suppresses buckling when stacking the staple tray on the staple tray. There is. The curl presser 64 is made of an elastic member such as a polyester film.

Next, in the ejection belt mechanism, as shown in FIGS. 10, 13, and 14, a drive shaft 24 is attached to the upper end portion of one side plate 41, 42 so as to cross over it, and A drive pulley 18 is fixed approximately at the center of the drive shaft 24. Further, a fixed pulley is provided in the lower part of the driving pulley 18, and an endless discharge belt 17 is passed between these two pulleys 18,19. A midway portion of the discharge belt 17 is hung on an idle pulley 47, and is guided by a guide plate 25 disposed inside the belt to prevent deflection and displacement. Further, a belt drive motor 22 is fixed to the side plate 41, and a pulley 21 attached to the output shaft of the bell 1-drive motor 22 and a pulley 20 attached to one end of the drive shaft 24 are connected to each other. Bell 1-23 is placed between them so that the power from bell 1 to the house is transmitted. Further, a protruding pawl 46 is provided in the middle of the surface of the discharge belt 17 so as to grasp the paper stack from below. As shown in FIG. 1, a home position sensor 48 for detecting the position of the claw 46 is provided inside the discharge belt 17, and the home position (HP) of the claw 46 is determined by this home position sensor 48.
is now being detected. The conveyance speed v2 of the discharge belt 17 is equal to the paper discharge linear velocity V of the paper discharge roller 3.
It is set to be slightly larger than □ (v, ≧V), thereby preventing the paper stack of the next job from being sent out in the DI together with the already bound paper stack.

Each mechanism of such a stapler is constructed to form one unit, and the guide rails 51.5
2 so that it can be pulled out toward the front.

As shown in FIG. 1, the paper ejection tray mechanism has a base portion of a paper ejection tray 53 fixed on a tray stand 54. As shown in FIG. A guide roller 56 is rotatably attached to the tray stand 54, and when the guide roller 56 is engaged with a guide rail (not shown), the paper discharge tray 53 is moved in the vertical direction together with the tray stand 54. It looks like this.

Up again! The 8h lay table 54 is biased upward by a riff 1 spring 55.

Driving force is transmitted from the transport motor 59 to the transport rollers 60, 61, and 62 through a belt (not shown), and driving power is also transmitted to the discharge roller 3 by a belt (not shown) from the transport motor 59. . Further, fur brushes la and 1b are attached to the rotating shaft 2 of the discharge roller 3, and these fur brushes 1a and 1b are attached to the rotating shaft 2 of the discharge roller 3.
and lb are adapted to be rotationally driven in synchronization with the discharge roller 3. The above fur brush la.

The bristles 1b are in contact with guide plates 26 and 27. The guide plates 26 and 27 have protruding ribs 26a that hold the lower edge of the stapled paper bundle.

27a, and a protruding rib 26b,
27b is formed to protrude to the front side. Therefore, the recording paper is bent to the back side and deformed into a wave shape by the pressing force of the protruding ribs 26b, 27b and the tips of the fur brushes la, lb, thereby preventing the paper bundle from buckling. It is designed to have a certain waist.

More particularly, as shown in FIG.
is set to be larger than the amount of protruding paper that is sent, so that in the unlikely event that the fur brushes la, lb
Even if the writing paper a does not fall down and enters between the upper guide plate 67 and the fur brushes la and lb, the fur brushes la and l
The trailing edge of the recording paper is scraped downward by the bristles b.

The recording paper processing operation will be explained below. First, the stapling operation is selected using the staple key, M documents (N sheets) are set on the document feed tray (RDI (), not shown), and the number of copies (K copies) is input using the 10 key, and then copying is performed. When the button is pressed, a copy size signal is received from the main body of the copying machine, and it is determined whether the size can be inserted into the staple section.If the size can be inserted into the staple section, the ejection belt 17 46 is at the home position (H, P). If it is not at the home position, it is returned to the home position by the belt drive motor 22. It is detected whether the stapler 8 is at the home position. If the home position is detected, the stapler 8 is moved to a predetermined location according to the size signal, and if the home position is not detected, the stapler 8 is moved until the home position is detected, and then the stapler 8 is moved to a predetermined location based on the size signal. The stapler 8 is moved to a predetermined location by the signal.

Also, jogger fences 5 and 6 are at home position (H,
I'), and if the home position is detected, the jogger fences 5 and 6 are moved to a predetermined location by the size signal, and if the home position is not detected, the home position is detected. The jogger fences 5 and 6 are moved to a predetermined position based on a size signal after detecting the home position. At this time, the moving position is moved to a position aIIn on one side and 2 am on both sides from the size width.

Then, when the leading end of the recording paper is detected by the input sensor SNI, the switching guide member 105 is switched to the staple tray by the switching solenoid 230, and guidance is performed.

When the rear end of the att passes through the input sensor SNI.

Made at high speed. The switching solenoid 230 is turned off after a predetermined time after passing through the entrance sensor SNI, that is, the time until passing through the switching guide member 105. The recording paper is discharged to the staple tray by the discharge roller 3, and while the recording paper is being discharged, the electric charge on the recording paper is removed by the charge removal brush 63 fixed to the upper guide plate 67 of the paper discharge section. It is now possible to The paper discharge roller 3 is provided with a flap, which bends the recording paper into a wave shape to give it stiffness. When the rear end of the recording paper passes through the discharge roller 3, the rear end of the recording paper is pushed down by the coaxial fur brushes la and lb, and the rear end of the recording paper is pushed down by the rear end fences 26a and 2.
7a and a rear end fence 5a provided on the jogger fences 5 and 6.

It is brought together so that it is butted against 6a. After passing through the lower paper discharge sensor 50 for a predetermined period of time, the motor 11 for opening the jogger fences 5 and 6, which had been on standby until then, repeats forward and reverse rotation once or twice, thereby aligning the recording paper in the width direction. After such paper alignment is performed, the paper is returned to the standby position. This paper alignment operation is repeated for each recording paper until a job completion message is issued from the copying machine main body.

Next, when a job end signal is issued and received from the copying machine main body, the above-described operation is performed again, and then the recording paper stack is held down in the width direction by the jogger fences 5 and 6. Then, the drive motor 223 in the stapler 8 is started to be driven, and the stack of recording sheets is stapled. In this binding operation, it is determined whether the binding is performed in one place or not. If the binding is performed in one place, the jogger fences 5 and 6 are moved to a position slightly away from the paper bundle after the binding operation is completed. If the stapler is to be stapled in two or more places, the stapler is moved to a predetermined upright position by the moving motor 39 and the stapling operation is performed again. After the stapling operation is performed, the jogger fences 5 and 6 escape slightly from the paper bundle. returned to position. At this time, the discharge bell 1-17 is rotated in the direction shown in FIG. 53
is discharged.

It is determined whether or not the last set number of copies (K copies) has been completed, and when the set number of copies has been completed, the jogger fence 5゜6 and stapler 8 are moved to the home position, and if the set number has not yet been completed, the above-mentioned operation is executed again. It is now possible to do so.

In such a device, the vertical movement of the output tray 107 is first performed by the upper limit sensor SN4. The CPU checks the output states of the lower limit sensor SN5 and the paper surface sensor SN3, and determines the current position of the output tray 107. If the upper limit sensor SN4 and the paper surface sensor SN3 are turned on, the vertical movement drive motor M3 is turned on and the discharge tray 107 is lowered to the point where the paper surface sensor SN3 is turned off. If only the upper limit sensor SN4 is turned on, nothing is done. Upper limit sensor SN4, lower limit sensor SN5 and paper surface sensor S
If all N3 are turned off, the vertical movement motor M3 is turned on and the output tray 107 is raised to the point where the upper limit sensor SN4 or paper surface sensor SN3 is turned on. It is lowered until sensor SN3 is turned off.

When only the paper surface sensor SN3 is turned on, the vertical movement opening motor M3 is turned on, and the paper surface sensor SN3
The output tray 107 is lowered until it is turned off. When the lower limit sensor SN5 and paper surface sensor SN3 are turned on, the recording paper on the output tray 107 is at the loading capacity -
It is determined that the paper is full, a signal indicating that the paper is full is sent to the main body of the copying machine, the recording paper is removed, and a predetermined time later, the vertical motion motor M3 is turned on, and the upper limit sensor S N -
1 or the output tray 107 is raised until the paper surface sensor SN3 is turned on. When the paper sensor SN3 is turned on, the ejection tray 1 is moved until the paper sensor SN3 is turned off.
07 is lowered.

When restarting in the same mode, the same operation as when turning on the power and selecting the mode is performed in synchronization with the copy start signal of the main body.

1 paper surface sensor SN3 during copying and at the end of copying
When turned on, the vertical movement drive motor M3 is turned on and the discharge tray 107 is lowered until the first sheet sensor SN3 is turned off. When this operation is repeated and the lower limit sensor SN5 is turned on, the output tray 107
A signal indicating that the recording paper is full is sent to the main unit.

If this operation overlaps with a train lift operation, priority is given to the train lift operation, and it is put on standby during the shift operation and is performed after the shift is completed. The last paper is detected by the main body paper ejection sensor 21.
5, a finisher stop signal is sent. When this signal is received, the vertical movement opening motor M3 is activated after the last sheet is ejected to the ejection tray 107.
is turned on and the ejection tray 107 is lowered by a predetermined amount to facilitate copying.

Next, when the power is turned on, no shift operation is performed, and when the shift or blue mode is selected and a mode signal is received, the shift motor original 2 is turned on and the output tray 107 is turned on.
is moved and the shift detection sensor 117 is turned on, the shift motor source 2 is turned off. Through this operation, the paper remaining on the output tray 107 and the paper for a new job are sorted. Such an operation is on standby during the tray up-and-down operation, and is performed after the tray up-and-down operation is completed. By doing this, even if the recording paper remains on the discharge tray 107, the recording paper is held down by the pressing roller 108, and the recording paper is prevented from shifting during shifting.

When copying and at the end of copying, the shift (
No. 3 is transmitted, the finisher receives this signal, the trailing edge of the last sheet passes over the sheet discharge sensor SNZ, and after a predetermined period of 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 original 2 is turned off. The above operation has priority over the tray up and down movement, and the tray up and down movement is on standby during the shift operation, and the tray up and down movement is performed after the shift is completed. This prevents paper from shifting due to shifting.

When a restart is performed in the same mode, no shift operation is performed at the start of copying, and during copying, the same operation as at the time of copying is performed.

Next, the jogger fence operation will be explained. First, when the power is turned on and a mode is selected, the CPU checks the output states of the jogger home position sensor 14 and the tray paper presence/absence sensor 205, and executes the following operations. If only the jogger home position sensor 14 is on, nothing is done. If the tray paper presence/absence sensor 205 is on, a signal indicating that recording paper remains in the staple tray is sent to the main body. Ru. When the jogger home position sensor 4 and the tray paper presence/absence sensor 205 are off, the jogger disturbance motor 11 is turned on, the jogger fences 5 and 6 are moved toward the home position, and the jogger home position sensor 14 is turned on. When this occurs, the jogger disturbance motor 11 is turned off.

During copying, when copying ends, and when copying is restarted, if a paper size signal is received after the main unit starts copying, the jogger disturbance motor 11 is turned on and the jogger fences 5 and 6 are moved to move the jogger fences 5 and 6 by a predetermined amount than the paper width size. It is parked in front and waiting. Paper output sensor 50
When a predetermined period of time has elapsed after passing through the fence, the jogger drive motor 1 is turned on and the jogger fence 5 in the standby position is turned on.
6 is moved to perform paper alignment, and then returned to the standby position. At this time, the jogger motor 11 repeats forward and reverse rotation once to several times, thereby aligning the jogger fence 5.6 in the width direction of the paper. Such an operation is performed every time recording paper is discharged onto the staple tray.

When the last sheet of the copy set passes through the main body sheet ejection sensor 215, a staple signal δ is sent, and upon receiving this signal, the last sheet is ejected to the staple 1-ray, and after the above paper alignment operation is performed, the paper is The jogger fence 5.6 is moved to a position where it holds down the width direction and is stopped. When the stapling operation is completed, the jogger fences 5 and 6 are moved to a position slightly away from both ends of the paper in the width direction. The sheaf of recording paper is then discharged onto a paper discharge tray 53 by the discharge belt 17 . By doing this, the sheets are prevented from shifting during stapling, and the jogger fences 5 and 6 are used as guides in the width direction when discharging the stack of recording sheets.

When the above-described operation is repeated for several copies and the i-line recording paper stack is ejected onto the paper ejection tray 53, the jogger disturbance motor 11 is turned on and the jogger fences 5 and 6 are moved toward the home position. When the jogger home position sensor 14 is turned on, the jogger drive motor 1 is turned off.

When the power is turned on and the mode is selected for stapler operation, the one rotation sensor 210 and the staple presence/absence sensor 211
, the output state of the stapler home sensor 212 is CP.
It is checked by TJ and the following operations are executed.

If the tray discharge sensor 205 is turned on while the upper rotation sensor 210 is turned off, it is determined that there is a stapling failure, and a stapler abnormality signal is sent to the main body.

When the staple presence/absence sensor 211 is in the OFF state, a stapler-no-staple signal is transmitted to the main body. If stapler home sensor 40 is on, nothing is done. When the stapler home sensor 40 is turned off and the one-rotation sensor 210 is turned on, the stapler moving motor 39 is turned on and the stapler 8 is moved toward the home position. When the stapler home sensor 40 is turned on, the stapler
Travel motor 39 is turned off. Upper rotation sensor 210
If it is turned off, it is determined that a stapling error or jam has been processed, and the printer waits in that state. When the one-rotation sensor 210 is turned on by human processing, the stapler moving motor 39 is turned on, the stapler is moved toward the home position, and the stapler home sensor 210 is turned on.
After 0 is turned on, the stapler moving motor 39 is turned off.

When copying, at the end of copying, and at the time of restarting copying, after the paper size signal is received after the main unit starts copying, the stapler movement motor 39 is turned on and the stapler 8 is moved a predetermined amount to the position corresponding to the paper size. will be moved. Next, after the last sheet of the copy set passes the main body paper ejection sensor 215, a stapling on signal is transmitted from the main body, and when that signal is received, the last paper is ejected onto the staple tray, and the jogger fences 5 and 6 record it. When both ends of the paper stack in the width direction are pressed, the staple motor 223 is turned on to perform the stapling operation, and when the one-rotation sensor 210 is turned on, the staple motor 2 is turned on.
23 is turned off. In the two-position stapling mode, the stapler movement motor 39 is turned on and the stapler 8 is moved by a predetermined amount according to the paper size, and then the stapler movement motor 39 is turned off to perform the second stapling operation. When such a stapling operation is repeated for several copies and the final stack of recording sheets is stapled, the stapler movement motor 39 is turned on and the stapler 8 is moved toward the home position, and the stapler home sensor 40 is activated. When turned on, the stapler moving motor 39 is turned off.

Next, the operation of the discharge belt will be explained.

When the power is turned on and when a mode is selected, the CPU checks the output states of the belt home sensor 48, the tray discharge sensor 205, the rotation sensor 210, and performs the following operations. If the belt home sensor 48 is turned on and the tray discharge sensor 205 is turned off, nothing is done. Belt home sensor 48
, when the tray ejection sensor 205 is both turned off, it is determined that the ejection belt 17 has not returned to the home position, the bell I-heel motion motor 22 is turned on, the ejection belt 17 is operated, and the ejection belt 17 is returned to the home position. When the sensor 48 is turned on, the belt opening motor 22 is turned off. If the belt home sensor 48 is turned off and the tray paper discharge sensor 205 is turned on, it is determined that there is a discharge failure, and a signal is sent to the copying machine main body to remove the stack of recording paper on the staple tray. After the recording paper stack is removed, the belt opening motor 22 is turned on and the ejection belt 17 is turned on.
is operated, and when the belt home sensor 48 is turned on, the belt opening motor 22 is turned off.

At the time of copying and at the end of copying, the last sheet of the copy set is ejected onto the staple tray, and when the stapler 8 performs a binding operation on the stack of recording sheets, the one-rotation sensor 210 is turned on to indicate that the stapler has been properly stapled. This is confirmed. Thereafter, the belt opening motor 22 is turned on, the discharge belt 17 is operated, and the stapled stack of recording sheets is discharged onto the paper discharge tray 53. When the belt home sensor 48 is turned on, the belt opening motor 22 is turned off. Such operations are repeated for each copy.

In the shift tray system of the transport system, a finisher start signal is sent when the copying machine starts copying, so when that signal is received, the transport motor 220 is turned on and the low speed operation is reduced to the main body linear speed. is done at the same speed. When the recording paper is ejected from the main body and the input sensor SNI is turned on, a timer is set to 1 to monitor whether the recording paper passes the input sensor SN within a predetermined time and detect a jam. When the rear end of the paper passes through the entrance sensor SN1 and the entrance sensor SNI is turned off, the transport motor 220 is switched to high-speed operation and the transport speed is increased.

Further, a timer is activated to detect a jam by monitoring whether or not the leading edge of the recording paper turns on the discharge sensor SN2 within a predetermined time. When a predetermined period of time has elapsed after passing the entry sensor SNI.

The transport motor 220 is returned to low-speed operation, and preparations are made for carrying in the next recording paper. Paper ejection sensor SN2? 2, when the recording paper is turned on, a timer is set, and it is monitored whether or not the recording paper passes within a predetermined time to detect a jam.

By repeating these operations, in the case of shift tray mode, when a shift signal is received, a shift OK signal is sent after a predetermined period of time has elapsed since the last sheet of the copy set passed the paper discharge sensor SN2. The timing at which the signal is output and the shift operation is performed is measured. When the final recording paper is ejected from the main unit, a finisher stop signal is sent, so when that signal is received,
When a predetermined period of time has elapsed after the last recording paper passes the paper discharge sensor SN2, the conveyance motor 220 is turned off.

Next, in the staple tray system, when the main body of the copying machine starts copying, a finisher start signal is transmitted, so when No. 13 is received, the transport motor 220 is turned on and the low speed operation is changed to the linear speed of the main body. When paper #i is ejected from the main body and the input sensor SNI is turned on, the switching solenoid 2
30 and the lower conveyance motor 226 are turned on at low speed, a timer is set, and a jam is detected by monitoring whether the recording paper passes the input sensor SNI within a predetermined time. After the trailing edge of the recording paper passes through the entrance sensor 5NI, the entrance sensor SNI is turned off, and a predetermined period of time has elapsed, the lower transport motor 226 is switched to high-speed operation and the transport speed is increased. A timer is also set to monitor whether or not the leading edge of the recording paper turns on the lower paper discharge sensor 50 within a predetermined time, thereby detecting a jam. When a predetermined period of time has elapsed after the trailing edge of the recording paper passes the entry sensor SNI, the switching solenoid 230 is turned off.

When the lower paper discharge sensor 50 is turned on by recording paper, a timer is set, and it is monitored whether or not the recording paper passes within a predetermined time to detect a jam. When a predetermined time has elapsed after the paper a has passed the lower paper discharge sensor 50, the lower conveyance motor 226 is switched to low speed operation.

When a stapling signal is received by repeating these operations, after a predetermined period of time has elapsed after the last sheet of the copy set passes the lower paper ejection sensor 50, the jogger fence performs a paper alignment operation, and then the stapling operation is performed. The timing is measured. When the final paper is ejected from the main unit, a BUINILASH STOP signal will be sent, so when that signal is received,
When a predetermined period of time has elapsed after the last recording sheet passes the paper discharge sensor 50, the conveyance motor 220 and the lower conveyance motor 226 are turned off.

Next, the recording paper that is ejected from the paper ejection roller of the copying machine body enters the input sensor S? 11, the number of recording sheets discharged from the main body of the copying machine is counted based on the detection signal, and the number of copies stacked in the staple section is detected. Then, as shown in FIG. 16, the count value, that is, the number of copies sent to the stapling section, is compared with the preset number of sheets that can be stapled (selected number of sheets), and the number of copies sent to the stapling section is stacked. When the number of copies already stacked exceeds the selected number of copies, the belt drive motor 22 of the ejection belt 4!1 is turned on and the ejection belt 17 is opened, thereby removing the copies already stacked in the stapling unit. The recording paper group is ejected to the paper ejection tray 53 without being stapled.

Further, the remaining recording sheets carried into the stapling device section are once stacked in the stapling device section, and after the stacking is completed, the belt opening motor 22 of the ejection belt U & structure is turned on again, the ejection belt 17 is rotated, and thereby the stapling device The remaining copy recording paper groups stacked in the set are discharged onto paper discharges 1 to 53 without being stapled.

In this way, when more than a specified number of recording sheets are sent to the stapling device section, by ejecting the group of recording sheets without performing stapling processing, inconveniences such as jams caused by exceeding the stapling capacity can be prevented. At the same time, the copy processing operation will not be interrupted after the specified number of copies have been made, and thus the copying operation can be carried out smoothly.

Furthermore, as shown in FIG. 17, the CP on the copying machine side
The U and the CPU on the finisher side are connected by an optical fiber.

In the Schiff I-1-R section of the finisher.

Conveyance motors 1002 are connected to the CPU 1000 via a servo control circuit 1001, and a vertical motor 1004 is connected via a forward/reverse driver circuit 1003.
A shift motor 1006 is connected via 5.

Furthermore, signals from various sensors and various switches 1007 are input to the CPU 100O.

Furthermore, the CPU 1000 has an interface I
The connector is connected to the staple portion via 10. A staple unit 1008 is connected to the interface I10, a transport motor 1011 is connected via a servo control circuit 1009, an ejection motor 1013 is connected via a servo control circuit 1012, and a stepping control motor Jogger motor lOl via control circuit 1014
5 is connected, stepping control motor control circuit 1
A stapler moving motor 1017 is connected via 016. Furthermore, the above interface I10
, signals from various sensors and various switches 1018 are input.

[Effects of the Invention] As described above, the present invention is capable of ejecting a group of recording papers without performing a stapling operation when more than a specified number of recording papers are fed into the stapling device section. It is possible to prevent inconveniences such as the occurrence of jams due to overcapacity, and it is also possible to prevent the copy processing operation from being interrupted after a specified number of copies, and the copying work can be carried out smoothly.

[Brief explanation of drawings]

Fig. 1 is an explanatory side view showing the overall configuration of a finisher in an embodiment of the present invention, Fig. 2 is an external perspective view showing the discharge section to the ejection tray, and Fig. 3 is a diagram showing the structure of the train shaft swing mechanism. - Plane explanatory diagram showing the lay-fitting state;
FIGS. 4 and 5 are plan explanatory views and external perspective views showing the drive system of the train lift swing mechanism, FIG. 6 is an external perspective view showing the paper ejection holding mechanism, and FIGS. 7 and 8 are FIG. 4 is an explanatory side view and an external perspective view of a paper ejection tray up and down mechanism. FIG. 9 is a schematic side view showing the general structure of the paper discharge processing system, FIGS. 10 and 11 are front and bottom views showing the general structure of the stapler, and FIG. 12 is the stapler. 13th side explanatory diagram showing the mounting structure of
The figure is an external perspective view of the discharge device, and Figure 14 is B in Figure 10.
-B sectional view. FIG. 15 is an enlarged side view of the staple discharge section. FIG. 16 is a flowchart showing the recording paper ejection control operation procedure when more than a specified number of recording papers are fed into the stapling device section, and FIG. 17 is a block diagram showing a control system for carrying out the present invention. It is a line diagram. ■...Shift sorting department, ■...Stapling department, S...
... Stapler 3... Paper ejection roller, 5.6...
Jogger fence, F... release belt, 22...
Belt drive motor 26.27...Guide plate, 53
...Paper output tray, 103...Fur brush for paper gathering, 107...Ejection tray. (Ha ka l name) Form 20 Form σ Day form 7 Picture scolding I Form 80 ノ2 ρ Moq day form fδ figure 740 Ru7 昂のME lθ 口

Claims (1)

[Claims] After arranging the recording sheets discharged from the image forming apparatus so as to perform bookbinding processing, the ends of the recording sheets are stapled by a stapling device section, and the bound group of recording sheets is In the image forming post-processing method, the number of sheets of recording paper carried into the stapling device section is counted, and when the count value exceeds a set value, the number of sheets of recording paper is delivered to the stapling device section. At the same time as ejecting the already stacked recording sheets to the paper output tray, the remaining recording sheets carried into the stapling device section are temporarily stacked in the stapling device section, and after stacking is completed, these recording paper groups are transferred to the paper output tray. An image forming post-processing device characterized in that the image forming post-processing device is configured to eject the recording sheets and not perform stapling processing on the group of recording sheets.