JPS6172592A - Sheet treater - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a sheet processing device for binding sheets such as paper ejected from an image processing device such as a copying machine, facsimile machine, or printer with staples.

(2) Prior Art In a conventional sheet processing apparatus of this type, sheets are brought to the reference side of a sheet guide by a diagonal roller feed mechanism to perform sheet alignment.

When the sheet is passing through the diagonal rollers, it receives a force diagonally from the sheet transport line and comes into contact with the reference side. Therefore, in order to perform such sheet alignment, a relatively long, flat sheet conveying path is required, which increases the length of the sheet feeding guide and increases the size of the apparatus. If the sheet size is fixed, sheet alignment will be performed smoothly, but if there are many sheet sizes, one sheet
Even after the side comes into contact with the reference side of the sheet feed guide, it is further subjected to a force directed in an oblique direction, causing the side of the sheet to warp or the sheet alignment to be disturbed.

(1) Purpose It is an object of the present invention to provide a sheet processing apparatus in which there are fewer restrictions on the sheet conveyance path of a sheet guide and in which sheet alignment is performed smoothly and accurately for any of various sheet sizes.

(Constitution) In order to achieve the above object, in the present invention, a side guide device that can advance and retreat in a direction perpendicular to the moving direction of sheets sent from a sheet receiving roller is installed on the upstream side of a sheet binding device. The side guide device is configured to be biased to advance after receiving a set number of sheets.

According to this, the sheet conveyance path of the sheet guide may be curved, so it can be shortened. Further, by determining the advance position of the side guide device according to various sheet sizes, sheets can be accurately aligned for each size.

In a preferred embodiment of the present invention, before receiving a sheet, the side guide device is driven and biased to a home position corresponding to the sheet size, and each time a sheet is received, the side guide device is driven and biased once. The drive bias is a drive bias from a home position determined for each sheet size to an advanced position determined for each sheet size, and a retraction drive bias from the advanced position to the home position.

According to this, the sheets are guided by the side guides located at positions corresponding to their sizes, and the sheets are accurately aligned for each received sheet.

FIG. 1 shows an outline of the configuration of the main mechanical parts of an embodiment of the present invention, FIG. 2 shows details of the side guide device of the embodiment, and FIG. 3 shows an outline of the arrangement of the electrical control system.

The sheet processing apparatus shown in FIG. 1 is coupled to a portion of a copy paper output port of a copying machine that connects to a sorter.

In the seat entrance section 10, an upper entrance guide plate 11 and a lower entrance guide plate 12 are fixed facing each other.

The copy paper that has entered while being guided by the pair of guide plates 11 and 12 is sent to the copy stack section 20 by a pair of upper entrance rollers 13 and lower entrance rollers 14. These rollers 13.14 have a circumferential speed of 500 rrrn/se
It is designed to send copy paper using c. roller 1
4 is connected to a power transmission system connected to a main motor M (FIG. 3). The main motor M is urged to rotate in one direction by a motor driver Md. Motor driver Md
The microprocessor 53 provides on (rotation) and off (stop) instruction signals.

Furthermore, if the copied copies are charged with static electricity, the copies in the copy stack section 20 and the stable section 30 will be uneven, so a static elimination brush 15 is provided to eliminate static electricity from the copy paper. Furthermore, a reflective photosensor 16 is provided for detecting the entry of copy paper.

As shown in FIG. 3, the sensor 16 is composed of a light emitting diode and a phototransistor. Detected,
A two-short signal indicating none is given to the microprocessor 53.

The copy stack section 20 generally includes a tray 21 . The stack guide 22 is composed of a side guide 23 and a slide shaft 24. Naturally, the shape of the tray 21 is slanted so that the copy paper that comes in from the entrance section 10 can easily fall off, but among several types of copies, particularly large-sized copies may curl on the tray 21. In order to prevent this, the angle of inclination of the upper part is made small (part 21b).
The guide 23 allows a specified number of small-sized (B5) copy sheets to be loaded onto the tray 21a, and can be opened using the support shaft 17 as a rotating shaft.

This is to facilitate the removal of jammed paper.

Details of the side guide 23 drive mechanism are shown in the second @.

The side guide 23 is supported by two slide shafts 24, is driven by a pulley and a wire using a pulse motor PM as a power source, and moves in a direction perpendicular to the feeding direction of the copy paper to feed the paper. Align by pressing against the fixed side guide (reference side).

Referring to FIG. 3, a pulse motor driver PMd is connected to the microprocessor 53.

The pulse motor driver PMd drives the pulse motor PM in the positive direction.
energize reverse bias.

In this embodiment, the size of the copy paper is A3° B4. A
It is assumed that there are four types: 4 and B5.

When the copy paper size is A3, dotted line position S in Figure 2
The side guide 23 is positioned to wait for the arrival of copy paper, and at the timing when the copy paper is detected by the sensor 39, the side guide 23 is driven from position S to Sl shown in FIG. 4, and then returned to position S.

S is the home position of the side guide 23 for A3 size, and at this position S, the A3 size copy paper fed by rollers 13 and 14 is guided to the Pit. Sl is an alignment position separated from the fixed side guide (reference side) by a distance equivalent to the width of A3 size copy paper.

When the copy paper size is B4, the side guide 23 is positioned at C in FIG. 4, waits for the copy paper to arrive, and the side guide 23 is moved from position C to the position shown in FIG. It is driven to C1 shown in FIG. 2 and then returned to position C. C is side guide 2 for B4 size
This is the home position of No. 3, and at this position C, the 84-size copy paper fed by rollers 13 and 14 is smoothly guided. C1 is an alignment position separated from the fixed side guide (reference side) by a distance Wa111 corresponding to the width of 84-size copy paper.

When the copy paper size is A4, the side guide 23 is positioned at D in FIG. It is driven to Dl shown in and then returned to the position. D is side guide 2 for A4 size
This is the home position of No. 3, and in this position, A4 size copy paper fed by rollers 13 and 14 is smoothly guided. Dl is an alignment position separated from the fixed side guide (reference side) by a distance equal to the width of A4 size copy paper.

When the copy paper size is 85, the side guide 23 is positioned at E in FIG. 4, waits for the copy paper to arrive, and when the copy paper is detected by the sensor 39, the side guide 23 is moved from position E in FIG. Drive to El shown in and then return to position E, where E is the side guide 2 for B5 size.
This is the home position of No. 3, and at this position E, the 85-size copy paper fed by rollers 13 and 14 is smoothly guided. El is an alignment position separated from the fixed side guide (reference side) by a distance l11 equal to the width of 35-size copy paper.

In order to confirm the position of the side guide 23, especially the position when the power is turned on, a limit switch 23s (Fig. 2) is provided.
It is closed when it is at the 3-size home position S, and it is open when the side guide 23 is inside of it.

The stapling unit 30 includes a stapler 37, a ball ejection roller (eject roller) 31 that presses the stapled copy from above. Non-ejection roller (stop finger roller) that supports coffee from below 32. A stop finger 3 that stops the leading edge of the copy that is released by the rollers 13 and 14 at the entrance and slides down on the tray 21.
31 and a reflective photosensor 39.

The non-ejection roller 32 is connected to the output shaft of a clutch 50 (FIG. 3), and the input shaft of the clutch 5o is connected to a power transmission system connected to the main motor MIC.

The clutch 50 connects the roller 32 to the power transmission system when energized by the solenoid driver 50d.
However, when the power supply is cut off, the roller 32 is separated from the power transmission system.

The ball discharging roller 31 can move forward and backward in a direction away from the roller 32 and in a direction in which it comes into contact with the roller 32. The ball discharge roller 31 is equipped with a reciprocating solenoid 51.
(Fig. 3) is connected to the plunger. This solenoid 51 is energized by a solenoid driver 51d. The solenoid driver 51dK is a solenoid 5 that the microprocessor 53 gives an instruction signal to turn on (contact with the roller 32) and turn off (away from the roller 32).
1 is energized, the roller 31 is connected to the roller 32
When the roller 31 moves in the direction of contacting the roller 31 and is not energized, the roller 31 is layered a predetermined distance from the roller 32.

The stop finger 33 is a rotary solenoid 52 (
It is fixed to the rotating shaft shown in Figs. 1 and 2). The microprocessor 53 gives an instruction signal to the solenoid driver 52d to turn it on (the energizing stop finger 33 is in the retracted position) and to turn it off (the cutoff stop finger 33 is in the advanced position shown in FIG. 1). When the solenoid 52 is energized, the rotor of the solenoid 52 rotates clockwise in FIG. 1, and the lower end of the stop finger 33 escapes from the position where the copy paper is stopped.

As schematically shown in FIG. 3, the stapler 37 is equipped with a single operating cam 37a, a clutch 37b, etc., and performs stapling with one rotation of the operating cam 37a.

In order to detect the position of the operating cam 37a, the operating cam 37a
A switch operation cam 37c is fixed to the cam 37c, and a limit switch 37s is also provided. The switch 37s is closed when the operating cam 37a is in the rotation angle of the needle pressing area, and the switch 37s is open only when the operating cam 37a is in the standby position (top dead center of the needle pressing movement). During stapling, the clutch 37b is energized for a time corresponding to one rotation of the actuating cam 37a (from when the switch 37s is opened to when it is next opened), and connects the actuating cam 37a to the power transmission system connected to the main motor M. Join.

Copy paper is fed to the sheet processing apparatus described above from a copying machine that performs enlargement and reduction copying in the mode shown in FIG. 5a, with the image side facing downward.

The stapler 37 passes the staple 63 from the image side to the back side. In FIG. 5a, the original copy and the copy paper are viewed from the back side. Reference numeral 61 indicates the staples (stapler: upper left stapling) of the copy document, and arrow 62 indicates the direction in which the copy paper is fed (the direction in which it is ejected from the copying machine, that is, the direction in which it enters the sheet entry section 10).

In the mode shown in the left half of FIG. 5a, the microprocessor 53 staples the copy paper stopped by the stop finger 33, and staples the copy paper at the upper left corner as in the mode shown in the left half of FIG. 5a. A binding 63 is formed.

However, in the mode shown in the right half of Fig. 5a, the copy paper stopped by the stop finger 33 is advanced by 267 mm for A3 size, as shown in Fig. 5b.

For 84 format, after feeding out 227mm,
If the staple binding 63 is not formed after feeding out 210 mm for A4 size and 152 mm for 85 size, the upper left binding will not be achieved.

Therefore, as will be described later, in the left half mode shown in FIG. 5a, the microprocessor 53 staples the copy paper stopped by the stop finger 33, but in the right half mode shown in FIG. 5a, After stopping the set number of sheets with the stop finger 33, the stop finger 33 is retracted and the rollers 31 and 32 are driven.
49 times), then 227 mm (roller rotation number 3.613 times) for 84 size, and 2 times for A4 size.
After sending out 10+i+n (roller rotation number 2.865 times), further 152mm (roller rotation number 2.4 times) for 85 size.
After feeding (19 times), the rollers 31 and 32 are stopped and stapling is performed.

6 and 7a to 71 show sheet processing control operations of the microprocessor 53.

Briefly, Figure 6 shows the main routine, and Figure 7a
71 to 71 show subroutines showing processing operations in each mode.

First, refer to FIG. Microprocessor (hereinafter referred to as CP)
53 (referred to as U) performs initialization when the power is turned on (Step 1: Hereinafter, the word step will be omitted in parentheses, and only the step number will be shown).

In this initialization, first the signal to the copying machine is set to a non-ready level. Next, output signals to the various drivers are as follows: main motor M stop, roller 31 up, clutch 50 off (rollers 31, 32 stop), stapler 37 off, stop finger 33 up (position to stop), and pulse motor PM stop. Set the state to .

Next, refer to the status signal of the limit switch 37s of the stapler 37, and if it is not open (if the stapler 37 is not in the standby state), proceed to step 3 and execute alarm processing such as lighting an abnormality indicator lamp, Control is then stopped.

If the limit switch 37s is opened while the control is stopped, the process proceeds to the next step 4.

Now, when the limit switch 37s is opened and the process proceeds to step 2, the status signal of the photosensor 16 is referred to. If the status signal indicates that there is paper, copy paper remains, and the process proceeds to step 5, where an alarm process such as lighting of an abnormality indicator lamp is executed, and control is then stopped. If the status signal of the photosensor 16 indicates that there is no paper while the control is stopped, the process proceeds to step 6.

Now, when the sensor 16 does not detect paper and the process proceeds to step 6, the status signal of the photosensor 39 is referred to. If the status signal indicates that there is paper, copy paper remains, so
Proceeding to step 7, alarm processing such as lighting of an abnormality indicator lamp is executed, and control is then stopped. If the status signal of the photosensor 39 indicates that there is no paper while the control is stopped, the process proceeds to step 8.

Now, when the sensor 39 does not detect paper and the process proceeds to step 8, the open/close state signal of the limit switch 23s is referred to. If the status signal indicates open, the side guide 23 is not at the home position (A3 size home position), so the process proceeds to step 9, where the pulse motor PM is reversely energized and the switch 23s is closed. Stop the motor PM and proceed to step 10. If the switch 23s is not closed within the side guide movement time of 81 to 8 from the start of energization of the pulse motor PM, the motor PM is stopped, the abnormality indicator light is turned on, and the control is then stopped.

Now, when the limit switch 23s is closed and the process proceeds to step 10, a signal indicating ready is given to the copying machine.

The process advances to data reading (11), where it waits for the required signal to be transferred from the copying machine. The main signals from the copying machine include original size data, copy size data, number of copies data, mode data (staple mode/non-stable mode), copy start signal, copy end signal, etc.

Upon receiving original size data, copy size data, number of copies data, and mode data (stable mode/non-stable mode) from the copying machine, the CPU 53
First, cancel the ready signal and set the non-ready signal),
When the non-stapling mode is instructed, the process proceeds to the non-stapling mode sheet processing control shown in FIG. 71 (12).

When the stapling mode is instructed, the copy number data is referred to and it is determined whether the number of copies per copy n is less than or equal to the allowable value 20 (13a). If the number of copies is 20 or less, the copy mode is determined with reference to the original size and copy size, and the process proceeds to a subroutine corresponding to the copy mode (14-23).

If the number of copies is 21 or more, the copying machine is notified of an abnormality in the number of copies, and a new data transfer from the copying machine is waited for (13b).

As explained earlier, if the number of copies is 20 or less,
The copy mode is shown in FIG. 5a and there are 14 modes. When the modes 1a and 1b shown in FIG. 5a are selected, the subroutine shown in FIG. 7a is executed, and when the mode is 2a and 2b, the subroutine shown in FIG. In modes 3a and 3b, the subroutine shown in FIG. 7c is used, in mode 4, the subroutine shown in FIG. 7d is used, in mode 5, the subroutine shown in FIG. 7e is used, and in modes 6a and 6b, the subroutine shown in FIG. In modes 7a and 7b, the process proceeds to the subroutine shown in FIG. 7g, and in modes 8a and 8b, the process proceeds to the subroutine shown in FIG. 7h.

Next, the control operation of the CPU 53 in modes 1a and 1b will be explained with reference to FIG. 7a.

It should be noted that in modes 1a and 1b, the copy size is A3, and the copy paper can be stapled at the position where it is stopped by the stop finger 33.

Now, since the copy size is A3 and the side guide 23 is at the home position S for A3 size in the above-mentioned initialization, the copy paper can be received as is.

Then, a ready signal is given to the copying machine (24a), and a copy start signal is waited for from the copying machine (25a).

When the copy start signal arrives (26a), the motor driver Md is instructed to rotate the main motor M.

There, the sensor 16 waits for the copy paper to arrive, and when the sensor 16 detects the copy paper (27a), the timer T1
Set (program timer) 28a) and wait for time-out (29a) - The time limit T1 of this timer T1 is sufficient time for the copy paper to move normally from sensor 16 to sensor 39. When the time has elapsed, the signal from the sensor 39 is referred to (30.a). If the sensor 39 detects paper, paper feeding is normal and the process proceeds to the next step 32a, but the sensor 39 does not detect paper. If not, the paper feed is abnormal, and the process advances to step 31a to notify the copying machine of the paper jam. In response to this, the copying machine stops feeding the paper, and when the copy end is notified, the main motor is stopped, the abnormality indicator light is turned on, and control is then stopped.

If the paper feed is normal and the process proceeds to step 32a, the contents of the sheet reception count register N are updated to the value obtained by adding l.First, the contents of the register N are compared with the number of copies n (33a) - register N If the content N is less than the number of copies n, the CPU 53 gives the motor driver PMd the number of normal rotation urging pulses necessary to drive the side guide 23 from S to Sl, and then drives the side guide 23. S
The number of reverse energizing pulses necessary to drive from I to S is applied (34a).

As a result, at the timing when a sheet of paper arrives at the sensor 39 section, the side guide 23 is driven back and forth with the 5-5 IS, and the paper (A3 size paper) is brought to the reference side of the side guide one by one. It will be done.

Compare the contents of register N with the number of copies n (33a)
As a result, when the content N of the register N becomes equal to the number of copies n (when 5 copies of copy paper have been received), the CPU 53 causes the motor driver PMd to change the side guide 23 from S to Sl. Give the necessary number of normal rotation energizing pulses to drive the motor PM, and then stop the motor PM (35
a). As a result, the entire copy paper equivalent to 5 copies is firmly pressed against the reference side by the side guide 23.

become. In this state, the CPU 53 gives an energization instruction signal to the solenoid driver 37d, sets the timer T2 that determines the stapler energization time (36a), and waits for a time-out (37a). When the time has elapsed, a energization stop signal is given to the solenoid driver 37d (38a), the status signal of the switch 37s is referred to (39a), and the switch 3
If the switch 7g is open, the cam 37a rotates once and it is assumed that stapling has been performed normally, and the process proceeds to step 41a. However, if the switch 37g is closed, the cam 37s does not rotate once and stops midway. It is assumed that there is a problem, initialization (1) is executed, the abnormality indicator light is turned on, and control is stopped at that point.

A non-ready signal is given to the copying machine (40a).

When the switch 37s is closed and the process proceeds to step 41a, the solenoid driver 51d is instructed to energize, the solenoid 51 is energized, and the roller 31 is lowered toward the roller 32 (41a).
, instructs the solenoid driver 52d to energize and energizes the solenoid 52 to retract the stopper finger 33 downward (42a), instructs the solenoid driver 50d to energize and closes the clutch 50 (43a), and timer T3.
Set a (44 a). The time limit T3a is sufficient time to feed the A3-sized copy paper from the stopper finger 33 onto the output tray 38, and while waiting for the time-out, the roller 31, At step 32, copy paper (stapled and bound into one volume) is sent out. When time is over, C
The PU 53 refers to the status signal of the sensor 39 (46a
). If the sensor 39 does not detect paper, it is assumed that the paper has been ejected normally, and the contents of the register N are cleared.
), stops the main motor M, de-energizes the solenoid 51 to retract the roller 31, de-energizes the solenoid 52 to return the stop finger 33 to the stop position, and turns off the clutch 50 to power the roller 31. It is disconnected from the transmission system (48a) - Then, a motor reverse pulse is given to the motor driver PMd, and when the switch 23s is closed, the motor PM is stopped (49a) - Furthermore, in step 46a, the sensor 39 detects the paper When it is detected,
Assuming that there is a discharge abnormality, initialization (1) is executed, the abnormality indicator light is turned on, and the control is then stopped.

Next, the control operation of the CPU 53 in modes 2& and 2b will be described with reference to FIG. 7b.

Note that in modes 2a and 2b, the copy size is 84, the home position of the side guide 23 is C, and stapling can be performed with the copy paper stopped by the stop finger 33. I want to be noticed.

Now, in order to set the home position of the side guide 23, the CPU 53 gives the motor driver PMd the number of pulses necessary to drive the side guide 23 from S to C, and then stops the motor PM (50 b )
.

The subsequent control operation of the CPU 53 is similar to the control operation (24a to 49a) shown in FIG. 7a described above. However, there are the following changes.

a, Step 7 34a (7) S-Sl-3 is C-Cm-
Read as C.

b. Step 35a (7) S Sl is read as c-cl.

C, T3a in steps 44a and 45a is read as T3b. 'r3b is the output tray 38 from the sensor 39.
The value is the time it takes for copy paper to be sent out normally, plus a tolerance value.

d. SIS in step 49a is read as Ci -3.

Next, the control operation of the CPU 53 in modes 3a and 3b will be explained with reference to FIG. 7c.

Note that in modes 3a and 3b, the copy size is A4, the home position of the side guide 23 is D, and stapling can be performed with the copy paper stopped by the stop finger 33. I want to be noticed.

Now, in order to set the home position of the side guide 23, the CPU 53 gives the motor driver PMd the number of pulses necessary to drive the side guide 23 from S to D, and then stops the motor PM (50c). .

The subsequent control operation of the CPU 53 is similar to the control operation (24a to 49a) shown in FIG. 7a described above. However, there are the following changes.

a, 5-8i-3 in step 34a is read as D-DI-○.

b, SS in step 35a is read as D-Di.

C, T3a in steps 44a and 45a is read as T3c. 'f3c is from the sensor 39 to the output tray 38
The value is the time it takes for copy paper to be sent out normally, plus a tolerance value.

d, 31=S in step 49a is read as Di −S.

Next, with reference to FIG. 7d, C, PT in mode 4
The control operation of J53 will be explained. Note that in mode 4, the copy size is 85, the home position of the side guide 23 is set to E, and stapling can be performed while the copy paper is stopped by the stop finger 33. sea bream.

Now, set the home position of side guide 23.
To determine this, the CPU 53 gives the motor driver PMd the number of pulses necessary to drive the side guide 23 from S to E, and then stops the motor PM (5.Od).

The subsequent control operation of the CPU 53 is similar to the control operation (24a to 49a) shown in FIG. 7a described above. However, there are the following changes.

a, S-51-S in step 34a is read as E-El-E.

b. E-5l in step 35a is replaced with E-Ct6 C. T3a in steps 44a and 45a is replaced with T3e. T3g is a value obtained by adding an allowable value to the time required for the copy paper to be normally delivered from the sensor 39 to the output tray 38.

d, 5t-S in step 49a is read as El-5.

Next, with reference to FIG. 7e, cpus in mode 5
The control operation No. 3 will be explained. Note that in mode 5, the copy size is A3, the home position of the side guide 23 is S, and the state in which the copy paper is stopped by the stop finger 33 causes the roller 32 to
Rotate 4.249 times to reach 267 mm (Figure 5b)
Note that it must be fed out and stapled.

The control operations of the CPU 53 in mode 5 overlap to a large extent with the control operations (24a to 49a) shown in FIG. 7a described above.

Steps 24i to 35i in FIG. 7e are the same as steps 24a to 35a in FIG. 7a. However, when receiving copy paper with 0 copies per copy, mode 5 (
78), the side guide 23 is driven to 81.
5 g) Lower the roller 31 and lower it to the roller 31-3.
n sheets of copy paper are sandwiched between the two (41e), the stop finger 33 is retracted downward (42e), and the clutch 50 is
is turned on (43e), starts feeding the copy paper, sets timer T4a (44e), waits for the timer to elapse (45e), and when the timer elapses, the clutch 50 is turned off (52e), at which time stapling is performed ( 368
~40e). Then, the clutch 50 is turned on again to start the delivery drive 53e), and the timer T5 is set 54e).

Wait for the time to elapse (55e). When the time is over, refer to the status signal of the sensor 39 (46g). If the sensor 39 does not detect paper, clear the contents of the register N.
7e), the motor M is stopped, the roller 31 is returned upward, the stop finger 33 is returned to the stop position, and the clutch 5 is
0 is set to OFF (48e), and the side guide 23 is driven to the home position S (49e). If the sensor 39 detects paper in step 46e, there is a paper problem, and the process proceeds to abnormality processing (56e).

Next, the control operation of the CPtJ 53 in modes 6a and 6b will be described with reference to FIG. 7f.

Note that in modes 6a and 6b, the copy size is 84, the home position of the side guide 23 is C, and the roller 32 is moved 3.613 mm from the state where the copy paper is stopped by the stop finger 33.
Note that it must be rotated in batches and fed out 227 mm (Figure 5b) to staple.

The control operations of the CPU 53 in modes 6a and 6b are similar to the control operations (24e to 49e) shown in FIG. 7e described above. However, it shall be read as follows.

a, 5-sl-s in step 34e is read as C-C1-C.

b, 71. 5-sl in step 35e is replaced with C-Cl.

C, T4a in steps 44e and 45e is replaced with Tab. Tab is the time to feed the copy paper 227 mm.

d, 5i-3 in step 49e should be read as cl-s.

Next, the control operation of the CPU 53 in modes 7a and 7b will be explained with reference to FIG. 7g.
In a and 7b, the copy size is A4, the home position of the side guide 23 is D, and the roller 32 is moved 2.865 times from the state where the copy paper is stopped by the stop finger 33. Note that it must be rotated and fed out 180 mm (Figure 5b) to staple.

The control operations of the CPU 53 in modes 7a and 7b are similar to the control operations (24e to 49e) shown in FIG. 78 described above. However, it shall be read as follows.

a, S-3i-8 in step 34e should be read as D-Dl-ri.

b. 5-St in step 35e is read as D-Di.

C, T4a in steps 44e and 45a is read as T4c. T4c is the time it takes to feed out one sheet of 5 copies by 180 mm.

d, 5t-S in step 49e is read as Di-S.

Next, the control operation of the CPU 53 in modes 8a and 8b will be described with reference to FIG. 7h.

Note that in modes 8a and 8b, the copy size is 85, the home position of the side guide 23 is E, and the copy paper is stopped by the stop finger 33.

Rotate the roller 32 2.419 times to generate 152nv (
Note that FIG. 5b) must be fed out and stapled.

The control operations of the CPU 53 in modes 8a and 8b are similar to the control operations (240 to 49e) shown in FIG. 7e described above. However, it shall be read as follows.

a, 5-sl-s in step 34e is read as E-El-E.

b, 5-5t in step 35e is read as E-El.

C, Taa in steps 44e and 45e is read as Taa. Taa is the time to feed the copy paper 152 mm.

d, 5t-S in step 49e is read as El-S.

The above is the control operation of the CPU 53 when stapling is instructed by the copying machine. This can now be summarized as follows.

A. Copy mode (Figure 5a) is la, lb.

In cases 2a, 2b, 3a, 3b, and 4, the number n of copy sheets is stacked on the tray 21a while the stop finger 33 is kept at the stop position.

In this, each time a sheet of copy paper arrives.

Move the side guide 23 from the guide position (home position S, C, D, E) corresponding to the copy size to the alignment position (S
1+Ct+Dt+El) and from the alignment position to the guide position (-reciprocating drive) to align each sheet.

When the number n of copy sheets is stacked, the side guide 23 is driven to the alignment position, and the stapler 37 is energized to staple the copy sheets.

Next, the roller 31 is lowered to sandwich the copy paper between the rollers 31 and 32, the stop finger 33 is retracted, the clutch 50 is energized to drive the roller 32, and the copy paper is delivered to the discharge tray 38.

B. Copy mode (Figure 5a) is 5, 6a, 6b.

7a, 7b, 8a, and 8b, first, with the stop finger 33 placed at the stop position, the number n of copy sheets is stacked on the tray 21a.

In this case, each time a sheet of copy paper arrives, the side guide 23 is moved from the guide position (home position S, C, D, E) corresponding to the copy size to the alignment position (St y
ci y Di + Et), and also by driving (-reciprocating drive) from the alignment position to the guide position, aligning each sheet one by one.

When the number n of copies is stacked, the side guide 23 is driven to the alignment position, the roller 31 is lowered, and the copy paper is sandwiched between the rollers 31 and 32.

The stop finger 33 is retracted and the clutch 5° is energized to drive the roller 32.

When the roller 32 is driven by an amount corresponding to the size (FIG. 5b), the clutch 50 is turned off, the roller 32 is stopped, and the stapler 37 is energized.

Next, the clutch 50 is energized to drive the roller 32, and the
The copy paper is delivered to the output tray 38.

Next, the control operation of the CPU 53 when the mode data from the copying machine is for non-staple binding will be explained with reference to FIG.

If it is not stapled, as mentioned above, C
The PU 53 proceeds from step 12 in FIG. 6 to step 24i in FIG. 71, where it gives a ready signal to the copying machine and waits for a copy start signal to arrive from the copying machine (25
i). When the copy start signal arrives (26i), the motor driver Md is instructed to rotate the main motor M.

There, it waits for the copy paper to arrive at the sensor 16.

When the sensor 16 detects copy paper (27i).

Set timer Tz (program timer)28
i) Wait for time-out (29i).

The time limit T1 of the timer T1 is sufficient time for the copy paper to move normally from the sensor 16 to the sensor 39. When the time has elapsed, the signal from the sensor 39 is referred to (30i).

If the sensor 39 detects paper, the paper feed is normal and the process proceeds to the next step 41i, but if the sensor 39 does not detect paper, the paper feed is abnormal and the process proceeds to step 31i.
to notify the copier of a paper jam. In response to this, the copying machine stops feeding the paper, and when the copy end is notified, the main motor is stopped and initialization (1) is executed.
Next, the abnormality indicator light is turned on, and control is then stopped.

Now, if the paper feed is normal and the process proceeds to step 41i, the solenoid 51 is energized to lower the roller 31 to 32 (4L
i) The solenoid 52 is energized to retract the stop finger 33 from the stop position (42i), and the clutch 5
0 (43i).

As described above, the roller 32 rotates with the roller 31 in contact with the roller 32, and this rotation causes the roller 31 to also rotate. The copy paper that has arrived between the rollers 31 and 32 is sent out toward the output tray 38 because the stop finger 33 is retracted.

(1: When the clutch 50 is turned on, the PU 53 updates the contents of the register N to an additional value of 1 (32i), and compares the contents N of the register N with the number of copies n (33i).

If N is less than n, more copy paper will arrive, so the process returns to step 16 and waits for the sensor 16 to detect copy paper.

As described above, while n sheets of copy paper arrive, the roller 3
1 and 32 are in contact with each other, they are rotating, and the stop finger 33 is retracted, and the copy paper is placed in the output tray 3.
Sent to 8th.

When the content N of the register N becomes equal to the number of copies n, the timer T3a is set (44i), waits for the time to expire (45i), and when the time is over, the sensor 39 detects the paper by referring to the status signal of the sensor 39 (46i). If not, the register N is cleared L (47i), the main motor M is stopped, the roller 31 is retracted upward, the stop finger 33 is returned to the stop position, and the clutch 50 is turned off (48i). If the sensor 39 detects paper in step 46i, it is assumed that there is a paper jam, and abnormality processing 56
Go to i.

The control operation of the CPU 53 in the non-staple mode explained above is as follows.6C, main motor M
is driven, the stop finger 33 is driven to the retracted position, the roller 31 is lowered and brought into contact with the roller 32,
A clutch 50 is turned on, and copy sheets corresponding to the number n of copies are sent out as they are to a discharge tray 38 without stopping on the way. The stapler 37 is not energized, the side guide 23 is left at the maximum size A3 guide position (S), and is not driven. The copy paper simply passes through the sheet handling device.

■Effects As explained above, in the present invention, the side guide 23 is
Since the sheets are aligned by reciprocating in the direction perpendicular to the sheet feeding line and stapled by the stapler 37, there is no need to make the sheet feeding line in the sheet processing device particularly long, and the sheet size Sheet alignment is performed accurately and smoothly regardless of the situation, and sheet jams and staple stitching problems are reduced.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view mainly showing the configuration of the mechanical elements of an embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view showing the configuration of the side guide device of the embodiment, and FIG. 3 is the electrical element. FIG. 4 is an explanatory diagram showing the setting position of the side guide 23, FIG. 5a is a plan view showing the relationship between the copy mode of the copy paper being sent and the stapling position, and FIG. 5b is a block diagram showing the outline of the structure of the section. The figure is an explanatory diagram showing the relationship between copy paper size and stapling position. 6, 7a, 7b, 7c, 7d, 7e, 7f, 7g, 7h, and 71 show the microprocessor CPU 53 shown in FIG. 6 is a flowchart showing the control operation, FIG. 6 shows the main flow, FIGS. 7a to 71 show the stable/non-staple mode instructed by mode data sent from the copying machine, and FIG. 5a shows the main flow. 3 shows a subroutine showing details of control operations according to the indicated copy mode. 10: Seat entrance section 11.12 Ni guide plate 13.
14: Roller (sheet receiving roller) 15: Static elimination brush L6: Reflective photosensor 17: Support shaft
20: Copy stack club child 5a■ Mitsuru 5b

Claims (6)

[Claims] (1) Sheet receiving roller; Sheet discharging roller; Sheet guiding device that guides the sheet from the sheet receiving roller to the sheet discharging roller; Sheet stopper that can move forward and backward to stop the sheet at the sheet discharging roller; Sheet installed on the sheet discharging roller. Binding device: A side guide device that is installed upstream of the sheet binding device and can move forward and backward in a direction perpendicular to the direction of movement of the sheets sent from the sheet receiving roller; and after receiving a set number of sheets, drives the side guide device back and forth. A sheet processing apparatus comprising: a control means for energizing; (2) The sheet processing apparatus according to claim 1, wherein the control means drives and urges the side guide device to a home position corresponding to the sheet size before receiving the sheet. (3) The sheet processing apparatus according to claim 1, wherein the control means biases the side guide device to reciprocate once in response to a signal generated in synchronization with the reception of each sheet. . (4) One reciprocating drive bias is a drive bias from a home position determined for each sheet size to an advanced position determined for each seat size, and a retraction drive bias from the advanced position to the home position. Said claim No. 3
) The sheet processing device described in item 2. (5) The control means maintains the sheet stopper in the advanced position while accepting the set number of sheets, binds and biases the sheet binding device after accepting the set number of sheets, and drives and biases the sheet stopper to the retracted position after the binding bias is applied. The sheet processing apparatus according to claim 1, wherein the sheet discharging roller is driven and biased. (6) The control means keeps the sheet stopper in the advance position while accepting the set number of sheets, drives and urges the sheet stopper to the retracted position after accepting the set number of sheets, and binds the sheets after driving the sheet ejection roller by a predetermined amount. Claims (1), (2) and (3) for closing and biasing the device
) or (4).