JPS6172569A - Sheet processing apparatus - Google Patents

Abstract

PURPOSE:To provide a sheet processing apparatus wherein the restriction of the sheet feed path of a sheet guide is reduced and the alignment of sheets having various sizes are smoothly and accurately performed in a sheet binding mode and the operation from the reception of the sheet to the feed-out thereof is smoothly and rapidly performed in a non-binding mode. CONSTITUTION:A sheet guide apparatus (stack trays 21a, 21b, a stack guide 22) is provided between sheet receiving rollers 13, 14 and sheet discharge rollers 31, 32. A sheet stopper 32 is provided in the vicinity of the sheet discharge rollers 31, 32 in a freely advancing and retracting state and a sheet binding apparatus (stapler) 37 is provided. A side guide apparatus 23, which is retractable to the direction crossing the moving direction of the sheet fed from the sheet receiving rollers 13, 14 at right angles, is provided in the upstream side of the sheet binding apparatus 37. When a binding mode is indicated, the stopper 33 is allowed to advance to receive a predetermined number of sheets and, thereafter, the side guide apparatus 23 is reciprocally driven.

Description

Detailed Description of the Invention ■Technical Field d 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.6 ■Conventional Art TECHNICAL FIELD In a conventional sheet processing apparatus of this type, sheets are brought to a reference side of a sheet guide by a diagonal roller feeding mechanism to perform sheet alignment.

While passing through the diagonal rollers, the sheet receives a force directed in a diagonal direction 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, the sheets will be aligned smoothly, but if there are many sheet sizes, even after one side of the sheet comes into contact with the reference side of the sheet feed guide, it will receive additional force in a diagonal direction. As a result, the side of the sheet may warp or the sheet alignment may be disturbed.

■Purpose The present invention has few restrictions on the sheet conveyance path of the sheet guide, and in addition, in the sheet binding mode, sheet alignment is performed smoothly and accurately for all sheet sizes, and in the non-stapling mode, sheet receiving and sending out are performed smoothly. 6. Structure Aims to provide a sheet processing device that can perform smooth and quick processing In order to achieve the above object, in the present invention, a sheet processing device is provided with a sheet processing device located slightly downstream of the sheet binding device that can move to and from a sheet stopping position and a retracting position. A seat stopper is installed.

A side guide device is installed on the upstream side of the sheet binding device so that it can move forward and backward in a direction perpendicular to the moving direction of the sheet sent from the sheet receiving roller.In the sheet binding mode, the side guide device places the sheet stopper at the sheet stopping position. is configured to be energized to advance after receiving a set number of sheets, and in the sheet non-feeding mode, the sheet stopper is placed at the retracted position and the incoming sheets are ejected as they are.

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 in accordance with various sheet sizes in the sheet binding mode, sheets can be accurately aligned for each size. In non-stapling mode, the sheets are not stopped in the machine.

Sheet feeding becomes faster.

In a preferred embodiment of the present invention, in the sheet binding mode, the side guide device is driven and biased to a home position corresponding to the sheet size before sheet reception, and each time a sheet is received, the side guide device is driven and biased once. death,
One reciprocating 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 to which a sorter is connected.

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 enters while being guided by the pair of guide plates 11 and 12 is transferred to a pair of upper entrance rollers 13 and lower entrance rollers 1.
4, it is sent to the copy stack unit 20. These rollers 13 and 14 are designed to feed the copy paper at a peripheral speed of 500 wn/sec.

The roller 14 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. The microprocessor 53 is turned on (rotating) in the motor driver Md.
Gives an off (stop) instruction signal.

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, and a driver and signal processing circuit 16d turns on the light emitting diode and processes the light reception signal of the phototransistor to generate one sheet of paper. Detected,
A binary signal indicating none is given to the microprocessor 53.

The copy stack unit 20 generally includes a stack tray 21 . Stack guide 22. It 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 coming in from the entrance section 10 can fall easily.
Among the various types of copies, particularly large ones are placed in Tray 2.
Since it is easy to curl on the upper part 2, to prevent this, the upper part 2
The inclination angle for 1b is made smaller.

The stack guide 23 allows a specified number of small-sized (B5) copy sheets to be stacked on the tray 23, and can be opened using the support shaft 17 as a rotating shaft. this is,
This is to facilitate the removal of jammed paper.

Details of the side guide 23 drive mechanism are shown in FIG. 2.

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 fix the paper. Press it against the side guide (reference side) to align it.

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, the side guide 23 is positioned at the dotted line position S in FIG. 2 and FIG. It is driven from position S to S1 shown in FIG. 4 and then returned to position S. S is the guide position @ (home position) of the side guide 23 for A3 size, and at this position S, the A3 size copy paper fed by the rollers 13 and 14 is smoothly guided. 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 84, the side guide 23 is positioned at C 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 C in FIG. 4. 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 (guiding position) of No. 3, and in this position C, the 84-size copy paper fed by the rollers 13 and 14 is smoothly guided. C1 is an alignment position separated from the fixed side guide (reference side) by a distance equal to the width of 84-size copy paper.

When the copy paper size is A4, position the side guide 23 at D in FIG. 4, wait for the arrival of the copy paper, and move the side guide 23 from the position shown in FIG. D is the side guide 2 for A4 size.
This is the home position (guiding position) of No. 3, and in this position, the A4 size copy paper fed by the rollers 13 and 14 is smoothly guided. Dl is fixed side guide (reference side)
The alignment position is a distance equal to the width of the A4 size copy paper.

When the copy paper size is BS, the side guide 23 is positioned at E in FIG. 4, waits for the copy paper to arrive, and at the timing when the copy paper is detected by the sensor 39, the side guide 23 is moved from position E to 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 (guiding position) of No. 3, and at this position E, the 35-size copy paper fed by the rollers 13 and 14 is smoothly guided. El is an alignment position that is a distance in front of the fixed side guide (reference side) by a distance equal to the width of 85-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 stapler 37. This is the ball ejection roller (eject roller) that presses the stapled copy from above 31. Non-ejection roller 32 (eject roller) that supports the copy from below, roller 1 at the entrance section
It is comprised of a stop finger 33 that stops the leading edge of the copy that is sent by the sliders 3 and 14 and slides down on the stack tray 21, a reflective photosensor 39, and the like.

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

The clutch 50 connects the roller 32 to the power transmission system when energized by the solenoid driver 50d, and disconnects the roller 32 from the power transmission system when the energization is cut off.

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. A plunger of a reciprocating solenoid 51 (FIG. 3) is connected to the ball discharge roller 31. This solenoid 5I
receives electricity from the solenoid driver 51d. The microprocessor 53 gives an instruction signal to the solenoid driver 51d to turn it on (energized: contacting the roller 32) and turn it off (away from the roller 32). When the solenoid 51 is energized, the roller 31 moves in the direction of contacting the roller 32, and when the solenoid 51 is not energized, the roller 31 is spaced a predetermined distance am from the roller 32.

The stop finger 33 is fixed to a rotating shaft 36 of a rotary solenoid 52 (FIGS. 1 and 2). The microprocessor 53 gives an instruction signal to the solenoid DRY/<52d to turn it on (the energizing nist stop finger 33 is in the retracted position) and off (the cut off nist stop finger 33 is in the advanced position, that is, the stop 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 copy paper stopping position to the retracted position.

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

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

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

The stapler 37 penetrates 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 it to the upper left of the copy paper as in the mode shown in the left half of FIG. 5a. A staple stitch 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 fed out 267 mm for A3 size, then 8
After sending out 227 mIn for 4 size, 21 mIn for A4 size.
If the staple binding 63 is not formed after feeding out 0 mIn and then feeding out 152 mm for 85 size, the upper left binding will not be achieved.

Therefore, as will be described later, the microprocessor 53 controls the stop finger 3 in the left half mode shown in FIG. 5a.
In the right half mode shown in FIG. 5a, the set number of copies is stopped by the stop finger 33, and then the copy paper is stapled as it is by the stop finger 3.
3 is retracted and the rollers 31 and 32 are driven to feed out 267 mm (roller rotation number 4.249 times) for A3 size, and 227 mm (roller rotation number 3.613 times) for 84 size paper.
times) after sending it out.

210i+m for A4 size (roller rotation number 2.865 times)
After feeding out, the rollers 31 and 32 are stopped and stitching is performed after further feeding out 152 mm (number of roller rotations: 2.419 times) for 85 size paper.

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 copy 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, the output signals to various drivers are as follows: main motor M is stopped, roller 31 is up, clutch 5 is
0 off (rollers 31, 32 stopped), stapler 37 off, stop finger 33 raised (position to stop), and pulse motor PM stopped.

Next, referring to the status signal of the limit switch 37s of the stapler 37, if the limit switch 37s is not open (if the stapler 37 is not in the standby state), the process proceeds to step 3 and executes an alarm process such as lighting an abnormality indicator lamp. , control is stopped there.

If the limit switch 37g 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, there is no copy paper left.
Therefore, the process proceeds to step 5, where 9-report processing such as lighting of an abnormality indicator lamp is executed, and the 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 23g is referred to. If the status signal indicates open, the side guide 23 is not at the home position 5 (Baum position for A3 size), so the process proceeds to step 9, where the pulse motor PM is reversely energized and the switch 23s is closed. Then motor PM
Stop and proceed to step 10. If the switch 23s is not closed within the side guide movement time between E1 and S 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 23g 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 copier are! These include document size data, copy size data, number of copies per copy data, mode data (staple mode/non-staple mode), copy start signal, copy end signal, etc.

When receiving original size data, copy size data, number of copies per copy data, and mode data (staple mode/non-staple mode) from the copier.

The CPU 53 first cancels the ready signal and sets a non-ready signal), and when the non-staple mode is instructed, proceeds to the non-staple 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 n is less than or equal to the allowable value 20 (L3a). If the number of copies is 20 or less, the copy mode is determined by referring to the original size and copy size, and the process proceeds to the 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; in mode 5, the subroutine shown in Fig. 7e; and in modes 6a and 6b, the subroutine shown in Fig. 7f 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 only needs to 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.

Then, it waits for the copy paper to arrive at the sensor 16, and when the sensor 16 detects the copy paper (27a).

Set timer T1 (program timer) 28a
), wait for timeout (29a).

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 (30a).

If the sensor 39 detects paper, the paper feed is normal and the process proceeds to the next step 32a; however, if the sensor 39 does not detect paper, the paper feed is abnormal and the process proceeds to step 31a.
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, the abnormality indicator light is turned on, and control is then stopped.

If the paper feeding is normal and the process proceeds to step 32a, the contents of the sheet acceptance count register N are updated to a value obtained by adding 1. Next, the contents of register N are compared with the number of copies n (33a). If the content N of the register N is less than the number of copies n, the CPU 53 causes the motor driver PMd to
Apply the number of forward rotation energizing pulses necessary to drive the side guide 23 from S to Sl, and then apply the number of reverse rotation energization pulses necessary to drive the side guide 23 from Sl to S (34 a). .

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 from 5-st to s, and one sheet of paper (A3 size paper) is placed on the reference side of the side guide sheet by sheet. It will be sent to you.

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 copy paper for one copy is received), the CPU 53 causes the motor driver PMcl to change the side guide 23 from S to Sl. Give the necessary number of forward rotation energizing pulses to drive the motor, and then stop the motor PM (3
5 a). As a result, the entire copy paper for one copy is firmly pressed against the reference side by the side guide 23. In this state, the CPU 53 gives an energization instruction signal to the solenoid driver 37d and sets a timer T2 that determines the stapler energization time 36 a), 1
Wait for time-out (37a). When the time has elapsed, a energization stop signal is given to the solenoid driver 37d (38a), and the status signal of the switch 37s is referred to (3).
9 a). When the switch 37s is open, the cam 37a is
It is assumed that the needle has been rotated and stapled normally and the process proceeds to step 41a. However, if the switch 37g is closed, the cam 3
Assuming that 7s does not complete one rotation and has stopped midway, initialization (1) is executed, an abnormality indicator light is turned on, and control is then stopped.

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

When the switch 37s is closed, 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 (4
1a), instructs the solenoid driver 52d to energize, energizes the solenoid 52 to retract the stopper finger 33 downward (42a), instructs the solenoid driver 50d to energize, closes the clutch 50 (43a), and sets the timer T3a. is set (44a), and waits for time-out (45a).

Note that the one time period 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 rollers 31,
At 32, the copy paper (stitched into a single volume) is sent out.

When the time has elapsed, the CPU 53 refers to the status signal of the sensor 39 (46a). If the sensor 39 does not detect paper, it is assumed that the ejection was performed normally.

To clear the contents of register N (47a), stop main motor M, cut off power to solenoid 51, and remove roller 3.
1 is retracted, the solenoid 52 is de-energized, the stop finger 33 is returned to the stop position, and the clutch 50 is turned off to disconnect the roller 31 from the power transmission system (48
a). Then, a motor reverse pulse is given to the motor driver PMd, and when the switch 23s is closed, the motor PM is stopped (49.a). Note that step 46a
If the sensor 39 detects paper, it is assumed that there is an abnormality in ejection, and initialization (1) is executed, an abnormality indicator light is turned on, and control is then stopped.

Next, the control operation of the CPU 53 in modes 2a and 2b will be explained 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 it is only necessary to staple the copy paper while it is 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 (50b).
.

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-S and -S in step 34a are replaced with c-ci-C.6 b. 5-St in step 35a is replaced with c-Ci.6 C. T3a in steps 44a and 45a is replaced with T3b. For T3b, B4 size copy paper is sensor 3.
This value is the sum of the time it takes for the copy paper to be normally delivered from 9 to the output tray 38, plus an allowable value.

d, 5L-3 in step 49a is read as cl-s.

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 it is only necessary to staple the copy paper while it is stopped with 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-sl-s of step 34a is I)-Dll
-Replaced with D.

b. 5-3t in step 35a is read as D-DI.

C, T3a in steps 44a and 45a is read as T3c. T3c transfers A4 size copy paper to sensor 3.
This value is the sum of the time it takes for the copy paper to be normally delivered from 9 to the output tray 38, plus an allowable value.

d, 5l-s in step 49a is read as D, -3.

Next, referring to FIG. 7d, the CPU 5 in mode 4
The control operation No. 3 will be explained. Note that in mode 4, the copy size is 85, the home position of the side guide 23 is E, and the stop finger 3 is
Note that in step 3, it is sufficient to staple the copy paper while it is stopped.

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 E, and then stops the motor PM (50d).
.

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-5 in step 35a is read as E-C.

C, T3a in steps 44a and 45a is read as T3e. T3e uses B5 size copy paper as sensor 3.
This is the value obtained by adding an allowable value to the time it takes to normally send the paper from 9 to the discharge tray 38.

d. 5i-S in step 49a is read as El-3.

Next, referring to FIG. 7e, the CPU 5 in mode 5
The control operation No. 3 will be explained. In addition, in mode 5, the copy size is A3 size, the home position of the side guide 23 is S, and the stop finger 3 is
Note that from the state where the copy paper is stopped at 3, the roller 32 must be rotated 4.249 times to feed the copy paper 267 mm (FIG. 5b) to be stapled.

The control operation of the C:PU53 in mode 5 shown in FIG. 71 is the control operation (24a to 49a) shown in FIG. 7a described above.
There is considerable overlap.

Steps 24i to 35i in FIG. 7e are the same as steps 24a to 35a in FIG. 7a. However, when receiving copy paper for one copy, in mode 5 (Fig. 7e), the side guide 23 is driven to 31 and 35.
e) Then, the roller 31 is lowered to sandwich n sheets of copy paper between the rollers 31 and 32 (4L e), the stop finger 33 is retracted downward (42e), and the clutch 50 is turned on (43e) - copy paper Start sending the timer T4a, set timer T4a (44e), and wait for timeout (44e).
45e), when the time is over, the clutch 50 is turned off and the needle is adjusted (52e).
40e).

Then, the clutch 50 is turned on again to start the feeding drive (53e), the timer T5 is set (54e), and the timer T5 is waited for (55e). When the time is over, the sensor 39 status signal is referred to (46e), and the sensor 39 detects the paper. If not detected, clear the contents of register N47.
e) - Stop the motor M, return the roller 31 upwards,
Return the stop finger 33 to the stop position and close the clutch 50.
is turned off (48e), and the side guide 23 is driven to the home position S (49e). T5 transports the stapled A3 size copy paper from the stapler 37 to the output tray 38.
This value is the time to send data plus the allowable value.

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 CPU 53 in modes 6a and 6b will be explained 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 state in which the copy paper is stopped by the stop finger 33 makes it possible to set the 10-ra 32. 3
．． Note that it must be rotated 613 times and fed out 22 stones (Figure 5b) to staple.

The control operations of the CPU 53 in modes 6a and 6b are similar to the control operations (246 to 49e) shown in FIG. 7e described above. However, it shall be read as follows.

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

- Read as 〇.

b, 5-3i in step 35e is read as C-C.

C, T4a in steps 44e and 45e is read as T4b. Tab is the time to feed the copy paper 227 mm.

d, 5l-s in step 49e is read as Ct -8.

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

Note that in modes 7a 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 mm from the state in which the copy paper is stopped by the stop finger 33. Note that it must be rotated several times and fed out 180 mm (Figure 5b) for stable binding.

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

a, S-S, -S in step 34e are read as D-DI-ri.

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

C, T4a in steps 44e and 45e is read as T4c. T4c is the time to feed the copy paper 180 mm.

d, 5i-3 in step 49e is read as DI-3.

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 roller 32 is moved 2.419 mm from the state where the copy paper is stopped by the stop finger 33. Note that it must be rotated several times and fed out 152 mm (Figure 5b) for stable binding.

The control operations of the CPU 53 in modes 8a and 8b are the same as the control operations (24e to 49e) shown in FIG. 7e described above, except that they are read as follows.

a, 5-st-s of step 34e is E-E L-E
It should be read as

b. 5-St in step 35e is read as E-Ez.

. , T4a in steps 44e and 45e is 'raci
It should be read as T4d is the time to feed the copy paper 152 mm.

d, 5l-s in step 49e is read as El-3.

The above is the control operation of the CPU 53 when stable dodging 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 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 (31v
ctlDirEl) and from the alignment position to the guide position (-reciprocating drive) to align each sheet one by one.

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 transferred to the output tray 38. Send.

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, 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
l r C1t Di t El ) and driven (-reciprocating drive) from the alignment position to the guide position to align each sheet.

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 50 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.

Clutch 50 is then energized to drive roller 32 and deliver the copy paper to output tray 38.

Next, the control operation of the CPU 53 when the mode data from the copying machine is "no staple binding" will be explained with reference to FIG. 71.

When there is no staple binding, as mentioned above, the CPU 53
from step 12 in FIG. 6 to step 24i in FIG.
Proceed to. Then, a ready signal is given to the copying machine and a wait is made for a copy start signal to arrive from the copying machine (25i). When the copy start signal arrives (26i), the motor driver Md is instructed to rotate the main motor M.

- There, wait for copy paper to arrive at sensor 16, and when sensor L6 detects copy paper (27i), timer T
1 (program timer) is set (28i) and waits for timeout (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 (41i
), the solenoid 52 is energized to retract the stop finger 33 from the stop position (42i), and the clutch 50 is energized (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.

When the CPU 53 turns on the clutch 50, it updates the contents of the register N to an additional value of 1 (32i).

Compare the contents N of 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 31
32 is brought into contact with and rotated, and the stop finger 33 is retracted, and the copy sheets are sent one by one to the output tray 38 in the order in which they arrive.

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, clear the register N (47i), stop the main motor M, retract the roller 31 upward, return the stop finger 33 to the stop position, and turn off the clutch 50 (47i).
48i). If the sensor 39 detects paper in step 46i, it is assumed that there is a paper jam, and the process proceeds to abnormality processing 56i.

The control operation of the CPU 53 in the above-described non-stapling mode is as follows.

C, the main motor M is driven, the stop finger 33 is moved to the retracted position, the roller 31 is lowered, and the roller 32 is lowered.
, and turn on the clutch 50 to make one copy n.
Copy paper for 20 minutes is sent out as it is to a discharge tray 38 without stopping on the way. The stapler 37 is not energized, and the side guide 23 is at the maximum size A3 guide position (S
) and do not drive it. The copy paper simply passes through the sheet handling device.

■Effects As explained above, in the present invention, in the stable mode, the stop finger 33 is placed at the stop position, the number n of copies is stacked, and the side guide 23 is driven back and forth in the direction perpendicular to the sheet feeding line. Since the sheets are aligned and stapled using the stapler 37, there is no need to make the sheet conveyance line in the sheet processing device particularly long, and sheets can be aligned accurately and smoothly regardless of the sheet size. In addition, in the non-stable mode, the staple finger 33 is placed in the retracted position, and the copy paper arriving at the stack tray is directly delivered to the output tray 38. Therefore, copy feeding is smooth and quick.

[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 are microprocessors CP' shown in FIG. 6 is a flowchart showing the control operation of U53, FIG. 6 shows the main flow, FIGS. 7a to 7i show the stapling/non-staple mode instructed by mode data sent from the copying machine, and FIG. 5a 3 shows a subroutine showing details of control operations according to the copy mode shown in FIG. 10: Seat entrance part 11, 12 guide plate 13.1
4: Roller (sheet receiving roller) 15: Static elimination brush 16: Reflective photosensor 17: Support shaft
20: Copy stack section 21a, 21b Ni stack tray (sheet guide device) 22 Ni stack guide (sheet guide device) 23: Side guide 24 Ni slide shaft 30 Ni stable portion 31.32: Roller (sheet ejection roller) 33 Nist Zupfinger (seat stopper) 34 guide plate
35: Support shaft 36: Rotating shaft 37: Stapler (sheet binding device) 38: Ejection tray 39: Reflective photo sensor 4
0: Sheet processing device M: Main motor PM:
Pulse motor 23s, 37s: switch 37a
Nistable operating cam 37c: Switch operating cam 50, 37b: Electromagnetic clutch 5■: Reciprocating type solenoid 52: Rotary type solenoid

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 moving direction of the sheets fed from the sheet receiving roller; A control means for placing the sheet at a position where the sheets are stopped, energizing the side guide device to reciprocate after receiving a set number of sheets, and placing the sheet stopper at the position where the sheets are not stopped when a non-stapling mode is instructed; Device. (2) The sheet 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 sheet acceptance when the sheet binding mode is instructed. Processing equipment. (3) When the sheet binding mode is instructed, 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. The sheet processing apparatus according to item (1). (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) When the sheet binding mode is instructed, the control means maintains the sheet stopper in the advanced position while accepting the set number of sheets, and biases the sheet binding device to bind after receiving the set number of sheets; Claims (1), (2), (3), or (4), which drive and bias the rear sheet stopper to the retracted position and drive and bias the sheet discharge roller. Sheet processing equipment. (6) When the sheet binding mode is instructed, the control means keeps the sheet stopper in the advanced 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 Claims (1), (2), (3), or (1), wherein the sheet binding device is urged to bind after driving the discharge roller by a predetermined amount.
4) The sheet processing device described in section 4).