JPS6026336A - Original feeder - Google Patents

Abstract

PURPOSE:To perform complicate original feeding operation through simple constitution by inputting an operation mode every time the image forming operation of one original is completed, and controlling the feeding of the original in the inputted operation mode. CONSTITUTION:This feeder feeds the original in plural operation modes, and an optional operation mode is commanded to the original feeder every time the image formation is completed. Consequently, the operation control of the original feeder is performed under the control of an image forming device frame. An operation mode is inputted every time the image formation of one original is completed, and the feeding control over the original is carried out in the inputted operation mode, so it is not necessary to change the specification of the original feeder even in case of a change in the specification of the image forming device and the flexibility is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to a document feeding device that feeds a document to a predetermined position.

2. Description of the Related Art In general, a device that automatically feeds a document is sometimes used in combination with an image forming device such as a copying machine.

An example of this type of device is one that enables double-sided JL phase copying, but conventional devices of this type have complicated operations to perform double-sided copying, especially when the copying machine body and The problem is that the exchange of I/n signals between additional devices is complicated, which increases the number of signal lines, complicates the configuration, and lowers reliability. Further, when the specifications of the copying machine itself are changed, the specifications of the additional device must also be changed accordingly.

Furthermore, if the configuration was simplified, there was a drawback that various modes such as double-sided copying from a double-sided original, double-sided copying from a single-sided original, etc. could not be selected.

OBJECTS The present invention has been made in view of the above-mentioned drawbacks, and an object of the present invention is to provide a document feeding device that is capable of performing a complicated document feeding operation with a simple configuration.

A further object of the present invention is to provide an original document feeding apparatus capable of changing the operation mode related to document feeding during a series of image forming cycles.

These and other purposes are detailed below.

Embodiments will be specifically described below based on the drawings. FIG. 1-1 is a cross-sectional view showing a schematic configuration of an example of a double-sided copying apparatus according to the present invention.
The copying machine body B has a built-in copying process equipment, and a sorter C that sorts copy paper.

(1) Double-sided document circulation device 1 is the document loading table, 2 is the paper feed belt driving shaft, 2a is the paper feed belt driven shaft, and the paper feed belt 3 is placed between them, and the paper feed belt 3 is connected to the arrow C in the diagram of 1. rotating in the direction. 4 is a separation belt drive shaft, 4a is a separation belt driven shaft, and a separation belt 5 is placed between them and rotates in the direction indicated by the arrow in the figure.

A plurality of sheet-shaped originals placed on the original placing table 1 are separated one by one from the bottom by a paper feed belt 3 and a separation belt 5. Reference numeral 6 denotes four conveyor rollers, and 6a and 6b are rollers that press against the conveyor roller 6, respectively. Also, 9, 10, 1
14 conveyance rollers, 9a, 10a, lla are rollers 9.10. Inc. is a pressure-welding roller. Reference numeral 7 denotes a conveyor belt driving ruler located near the left side of the platen glass 12 disposed on the top plate of the main body of the copying machine, and 7a represents a conveyor belt driven roller located near the right side of the platen glass 12. , a belt 8 is placed between them. The lower surface of this suspension belt 8 is very close to and opposed to or in contact with the upper surface of the platen glass 12. Reference numerals 13 to 18 are reflection type optical sensors for detecting the leading edge or trailing edge of a document, which are disposed at positions in the document circulation path (paper path). or,
Reference numeral 20 denotes a reflective optical sensor M8 that detects the original placed on the original document tray L, and 19 detects the 1 wi ring of the original stack.
It is a reflection type senna (recycle senna?) that is used for recycle senna.
9 is turned on, and then the originals are fed separately from the bottom original, and when the rear end of the final original passes through the partition arm 22, the partition arm 22 is pulled out of the position of the recycling sensor 8819 by its own weight, and is turned off. .

(21 * 4 Machine body B 12 is a platen glass, 30 is a photosensitive drum that is rotated in the direction of the arrow with the axis 30m centered, 31t is a charger, 32 is a current unit, 33 is a transfer charger , 34 is a cleaner, 035 is a cassette for stocking copy paper,
36 is a paper feed U that feeds the copy paper in the cassette one sheet at a time.
-Ra, 37° 37a is a register roller, 38 is a fixing device 39, 39! for copy paper after transfer. It is a conveyor belt that conveys up to 40 is an intermediate tray for storing copy paper after single-sided copying; 41 and 41a are the drive shaft and driven shaft s'L of the paper feed belt 42; 43a is the drive shaft and driven shaft of the separation belt 44; There is a mechanism that refeeds the copied copy paper from the bottom side @45
゜45a is a paper ejection roller that sends the paper after copying to sorter C, or h if sorter C is not connected.
The paper is discharged to a paper discharge tray 46 shown in the figure aI t z.

(3) Sorter C 60 is a conveyance roller, 60a/press roller, and is used to feed the copy paper sent out from the copying machine main body B into the bins 61a to 610.

Reference numeral 62 designates a fixing plate for the bins 61a to 61G, which has a cutout groove 63. The bins 61a to 61G and the fixing plate 62 are integrally formed, and are connected by a chain 64Kx and a spring 65 to the shaft of the motor 66. Fixed co-moving rollers 67 and 6
The notch groove 63 is detected by a photoelectric sensor that detects the bin position at o4. We are determining which bins are compatible with the waste outlet. Also, %69 is a photoelectric sensor that detects the trailing edge of the copy paper sent from the copying machine body B, and after detecting the trailing edge of the copy paper, waits until the copy paper is completely collected at the bead. Then, when the next notch groove is detected by the photoelectric sensor 68, the bottle movement is stopped. In this way, the copy paper sent from main body B during copying can be stored in each bin and sorted.

(4) Drive system for double-sided document circulation device ho FIG. 2 is a schematic cross-sectional rear view showing the drive section. In the figure, 80 is a motor gear, 81Fi is a motor gear, and a paper feed belt drive shaft 2. and separation belt drive shaft 4 Vc gear 96
The driving force is transmitted through the 82 is a motor Ml, 83 is a motor pulley, 86 is a two-stage pulley, and drive transmission from the belt 87 to the belt 88 is performed by an electromagnetic clutch CL85.

In addition, 89 is also a two-stage pulley, which is integrated, and the belt 8
8 to the belt 90, and thereby the driving force is transferred to the drive roller 7 of the conveyor belt 8! Driving force is always transmitted through J91. Further, 93 is a disc with a notched groove 94tl that is rotated together with the two-stage pulley 89, and a photoelectric sensor 95
092 is an electromagnetic brake LSK that can detect the line of movement of the belt 8, and when turned on, the belt 8 can be stopped instantly.

Also, 97 is the motor M3, 98 is the gear, 99 is the pulley,
100,101.102 is heald, conveyance μm 6,9
, 10.11. Further, 103 is a disk having a notched groove 104 which is rotated together with the pulley 99) Photoelectric sensor 10IC and conveyor rollers 6.9, 10, 1
By detecting the rotation amount of 1, it is possible to detect the movement of the original document. Further, a solenoid 8L107 is used to switch whether the document on the platen glass 12 is conveyed in the -26 direction or in the direction 11C of the conveyance direction 9 using the fulcrum 106 using a switching claw 23t;j.

Next, the operation of the double-sided original circulation device A (D) will be explained.

(+) Single-sided original - Single-sided copy (without sorter) In FIG. 1, on the original mounting table IK, a plurality of sheet-like single-sided originals with the same page order are placed with the first negative side facing upward. The placed originals are separated and fed one by one from the bottom by the paper feed belt 3 and separation belt 5, and the fed originals are passed along the paper path Iat-
After passing through the document, the document is sent onto the platen glass 12 by the conveyor belt 8 with the image side facing downward. When the trailing edge of the document is detected by the sensor 14 (ag), counting of the number of notched grooves 94 in the disk 93 (FIG. 2) is started from that point on, and after counting a predetermined count, the motor M182 is turned off. , the clutch CL85 is turned off, the brake BK92 is turned on, and the rotational drive of the conveyor belt 80 is temporarily stopped. As a result, the document is automatically positioned and set at a predetermined position on the surface of the platen glass 12. Also, cent 13
(8*) (Figure 1-1) is used to detect whether or not the originals have been separated normally. It is determined that there is a jam and transport is stopped.

When the original is positioned on the platen glass 12 in this way, a paper feed completion signal (described later) is sent to the copying machine main body BK-
The feeding, copying and copying operations are started, and a toner image corresponding to the image of the original is formed on the photosensitive drum 3°. Also, cassette 3
A sheet of copy paper is fed by the paper feed roller 36 from inside the paper 5, and after passing through the paper path Ib, the toner image is charged on its upper surface! Transferred to a33 and passed through paper bus lb.

The sheet passes through the fixing roller 39*39m, passes through the feed path 1'lb, and is discharged to the sheet discharge tray 46. On the other hand, the exposed original is exposed to a halogen lamp 46 and optical mirrors 47 a, 47
After completing one IIA exposure using steps b, 47 c, and 47 d, the film passes through pass (a) and VKa and is discharged. At the same time, the next original is fed parallelly to the platen glass 12 by the above-mentioned operation.
The upper position is set.

This parallel operation is simply an operation for circulating the originals, and the reversal of the pail is not performed for the previous original or for the next original, so it is called an exclusion and overprinting operation. Then, one cycle of the set original is detected by the sensor B and 19, and a cycle end signal (described later) is sent to the main body B during copying.
Count the number of copies by 1. The above operation is repeated until the set number of copies is reached, and the required number of copies is stored on the paper discharge tray 46.

(1) Single-sided original - Single-sided copy (with sorter) The operation is almost the same as in the case of (1) Single-sided original - Single-sided copy (without sorter) explained in Mayukon, but when there is no sorter C, one side of a certain original In contrast, when the sorter C is installed, the document exposure for a certain document is performed several times for the set number of copies, and the document is ejected sequentially. Copy sheets are stored in bins 61a to 610 of sorter C while being bin shifted. In other words, the existence of the sorter C makes it possible to copy a set number of copies by circulating the original once.

(11) Double-sided original - double-sided copying (without sorter) Assuming that there are three originals on the original placing tray l, the originals placed on the original placing table l are arranged in the same page order as shown in FIG. If the desired number of copies is set to 3, the copy paper after copying is the 4th copy.
As shown in the figure, the originals are stacked on the paper discharge tray 46, and the originals are placed in the same state as when they were initially set as shown in FIG. Explain their operation.

First, the 5.6 midsummer draft is conveyed to the top of the platen glass 12, and then the motor M182. When M397 (Fig. 2) is reversed and at the same time solenoid 8L 107 is turned on, the paper ejection route is switched, and the original is transferred to paper path la,
(2) When the zero sensor 5517, which is conveyed by the conveyance roller 9.degree.9g, detects the trailing edge of the document, the motor M397 is stopped. Thereafter, after a certain period of time has elapsed, the motor M397 is rotated forward, and the document passes through the paper buses 'ia, V1m, and transport rollers 10, 10a, 11. It is transported by l1m. Then, if the sensor 8618 detects the rear layer 'f: of y
2 is rotated in the normal direction, the solenoid 8L23 is turned on, and the original is conveyed through the paper bus (a), gripped by the belt 8, and conveyed. When the trailing edge of the document is detected by the sensor 8315, it starts counting the number of notched grooves 94 in the disk 93 (FIG. 2) from that point on, and after counting a predetermined number of counts, the hair tab M18
2 is off, clutch CL85 is off, brake BK92
is turned on, the rotational drive of the conveyor belt 8 is stopped instantaneously, and the original is set. As described above, the paper feeding operation in which the original on the document mounting table l is set on the platen glass 12 while being reversed, the reverse paper feeding operation (hereinafter referred to as the counterfeeding operation) is performed at the beginning and then the paper feeding operation. The paper completion signal is sent to the copying machine body B.
send to The copying machine main body B-r: copies the original image onto the copy paper in the same manner as the above operation, but the fixing roller 39 * 39
The copy paper discharged from a is passed through the paper bus 1lib, which is switched by the switching claw 48, and placed on the intermediate tray 4o as shown in FIG. On the other hand, at the same time as the exposure of the 6th negative original is completed, a repeating operation is performed to position and set the 5th negative side of the original downward on the platen glass 12.
■a is passed (this operation is hereinafter referred to as repeated operation) 0, 1k14 and a paper feed completion signal is sent to the copying machine main body B, a copying operation is performed for the fifth grid, and the paper is transferred to the intermediate tray 40. The 5th Jl nii+ image is copied onto the back side of the copy paper on which the ga serious image of the 9th copy paper has been copied, and the paper is discharged onto the paper discharge tray 46 with the 5th Jl m monk facing upward.

Further, the original on the platen glass 12 is placed in a paper path VMa.

■Transportation rollers 11, 11aK to pass the heat, document placement table l
The original placed on the document is ejected with the upper IC No. 514 facing upward (this operation is hereinafter referred to as the exclusion operation) 0 From a certain time during this exclusion operation, the next document with the 4th page and 3 shells is ejected. The above-mentioned counterfeeding operation is performed in parallel with the exclusion operation,
It is positioned and set on the platen glass 12 with the fourth negative side facing downward (this operation in which the exclusion operation and counterfeeding operation are performed in parallel is hereinafter referred to as the exclusion and counterfeeding operation).

Thereafter, the above-mentioned copying operation is performed as many times as necessary, and finally the copy paper is ejected onto the paper output tray 46 as shown in FIG. The document is discharged onto the mounting table L, and double-sided copying is completed from the double-sided M document.

(1v) Double-sided original - double-sided copying (with sorter) The operation is almost the same as the double-sided original - double-sided copying (without sorter) described in the previous section. However, when there is no sorter C, the document is excluded, ejected and re-feeded every 4 times, whereas when the sorter C is installed, the document is exposed to the set number of copies. The sheets are once rotated and viewed on the intermediate tray 40 as shown in FIG. 6, after which they are re-fed and copied on the opposite side of the Ii & Ii bond side, and then sorted by a sorter C and stored one after another. Finally, the copy sheets are stored in the sorter C as shown in FIG. or,
The original is also ejected in the same state as the last set as shown in Figure 3, and the metal copying is completed.

(V) Single-sided original - double-sided copying (without sorter) When the number of originals placed on the original platen l is n, the bottom original is Ons, and the top original is O8, Figure 8-1 and #f 8 Figure 2: Two original document setting states are possible depending on whether n is an odd or even number. First, the case where n is an even number will be explained. Happy 8-1
In the figure, first set the original 'Q/4On on the platen glass 12 using the overprinting operation, then put the copy paper on which this original On has been copied into the intermediate tray 40Vc, perform the exclusion overwriting operation, and then set the original On and On- Exchange manuscripts with 1. Next, the next original 0n-1 is copied without making a copy of the original 0n-1. The document is exchanged using the exclusion and overprinting operation with -1. Copy the manuscript On-*.

While putting the copy paper into 1ull) Ray 4o,
Similarly, the next manuscript 0. The document is exchanged by an exclusion/overprinting operation with -s, and the document On-m is set on the platen glass 12.

At this time, if the original at 0n-s is the third original at t), the partition arm 22 is detected by the sensor S19, and the copying machine body B receives a cycle end signal from the double-sided original circulating device, and the number n of originals is It is determined that 4 pieces is an even number. Then, for 0n-1, without copying, the original is exchanged with the next original OQ by displacement overprinting operation, and original 'M4
Set On on the platen glass 12. At this point, the manuscript and copy paper are in the form 1 as shown in Figures 9-1 01 to 11.
Becomes 1.

Next, copying to the original is skipped, and the original is exchanged with the original On -+ by exclusion overwriting operation, and the original is replaced with the original On -+.
Seriton on the platen glass 12, Konohara +11 (-
'n-r copy paper is fed from the bottom of the single-sided copy paper stacked on the intermediate tray 40, that is, the reverse of the copy paper on which the 4th page has been copied. The third page of the original document 0n-1 is copied onto the surface of the original document 0n-1, and the third page is ejected onto the paper ejection tray 46. Hereinafter, the same operation as described above is repeated, and the original M On -t #i” be skip, [[
In the 0n-s copy, the second page of the intermediate tray 40 is made on the opposite side of the copied copy paper, and a set of double-sided copy paper is discharged as shown in FIG. 10-1. Then, repeat the copying operation for the first copy a set number of copies.
If it is a copy, the final copy paper will be as shown in Figure 1O-2,
The original is in the initial set state as shown in FIG. 8-1, and the copying operation is completely completed.

Next, a case where the number n of originals is an odd number will be explained. M8-
In FIG. 2, as in the case where the number n of originals is an even number, the original On is copied and transferred to the intermediate tray 40, and the original 0n-1 is skipped 1 original 0. -1 is copied and transferred to the intermediate tray 4o -M 1m On -a is skipped, original On -4 is copied and transferred to the intermediate tray 40, but the operation is repeated.
While originals 4MOn-m and 0n-4 are exchanging originals, the copying machine main body B determines that the number n of originals is 5, which is an odd number, based on the cycle end signal from the double-sided original circulating device.

Then, the document 0n- is replaced with the next document On, and MmOn is set on the platen glass 12νC. The original and copy paper at this point are shown in Figures 9-2 (1) to (31).
It will be like this. Next, skip the copy operation of the original On, and proceed to 11! The document is exchanged by the stop/discharge operation with L f40n-r. At the same time as this replacement, the intermediate tray 40
The copy paper on which the 5th Sadame was copied is the paper bus ■b,■
b, 1llb is passed through and placed again on the intermediate tray 40; on top of the bead paper. Next, the original 'l1iOn-+ is copied onto the reverse side of the copy paper on which the third page was copied on the intermediate tray 40, and then it is placed on the intermediate tray 40 again in the same manner as the circulation path of the copy paper for the fifth page. Place it on the top of the copy paper. At the same time as this circulation, the manuscript is 0n.

Next M, manuscript on-! We exchanged manuscripts with
1 on the platen glass 12. And manuscript 0n
The copying operation of -2 is skipped, the copying of original 0, , is performed on the reverse side of the copy paper on which the first purchase on the intermediate tray 40 was copied, and the copying operation of original on-4 is transferred to the intermediate tray 40 again. will be skipped. At this point, the copy paper is in a state as shown in Figure 10-3. Thereafter, the copy paper on the intermediate tray 40 is conveyed sequentially from the bottom to the paper path ■b, l.
b, lb are passed through and some double-sided copies are ejected onto the paper ejection tray 46. After that, repeat the above operation as many times as necessary for the set number of copies, and if the set number of copies is set to 3, the final copy paper ti! Figure 11, the original is in the initial set state m No. 8
-2 The jllllc recopy as shown in Figure 2 is completely completed.

(vl) Single-sided original horizontal - double-sided 'rkJ copying (with sorter) The difference from the operation sequence in the case of (V) single-sided original - double-sided copying (without sorter) explained in the previous section is that when there is no sorter C, a certain original In contrast to the case where the exclusion/overprinting operation was performed every time the original is exposed, when the sorter C is installed, the original exposure of a certain original is carried out at the same time as the set number of copies. When the number of originals is 4 as shown in Figure 8-1 and the set number of copies is 3, the copy paper with the even number R copied is once docked on the intermediate tray 40 as shown in Figure M12-1. Then, the odd-numbered copies are fed from the bottom and stored in the row-1 sorter C as shown in FIG. 12-2, and the copying operation is completed.

In addition, if the number of originals is 5 as shown in Figure 8-2 and the set number of copies is set to 3 temporary FC copies, the copy paper on which the odd number of copies have been copied is placed on the intermediate tray 40 as shown in Figure 13-1. do. Then, it is fed from the bottom, copies the even numbered pages, puts it into the intermediate tray 40 again as shown in Fig. 13-2, feeds it to the sorter C without performing the copying operation, and finally the As shown in Figure 13-3, the data is stored in each bin of the sorter and the copying is completed.

Next, a control section of the apparatus for executing the above-mentioned portrait action will be explained.

FIG. 14 is a schematic diagram of a control circuit for performing the above-described sequence operation. In the figure, the double-sided original circulation 1M device, A%, copying machine main body, B1, and sorter C are indicated by dots -, respectively. Signals are exchanged between devices A, B, and C using cables 122, 13, and 0. This is performed by serial transfer (described later) via the cape #121. 123
M.

123b, 123c, 123du Line receiver for receiving serial signals, using Sysmit TTL, 4x
The circuit configuration is as shown in figure s.

father, 124a, 124b, 124c, 124d, 124
e.

124f, 124g, 124h, 124i, 124j#
It is a line driver for i serial signal transmission (IJ, and uses a driver T 'i' L and has a circuit configuration as shown in Figure 16. 120 is a well-known one-chip microcomputer with built-in Le OM, Ordinary M, etc. (hereinafter referred to as a microcomputer), and for example, Nippon Electric Axis μ-〇〇M43N can be used.Microcomputer 1.20nr, i:, +1ltE
t source 125 1) 5V electric power H-1tl is supplied to enable internal program execution. Input port of microcomputer 120. , various sensor signals, a signal from a microswitch M8126 that operates when both rk1 original circulating devices A are opened from the front side, a request signal hQ from the copying machine main body B, etc. are input. Also, either the conveyor lock output from the sensor 105 (Fig. 82) or the belt clock output from the sensor 95 (Fig. 2) is connected to the interrupt input terminal 100 through the ant gate Q+-. Q* is input to the OR gate from a circuit composed of an inverter q.

! ! ! The feed lock and belt clock can be switched using the output port o1. This is done by the switching signal C8127 output from the.

Father, Dekapo) 01.0. ,0. ~O1, is connected to driver D, ~D,1, and this driver 1)
, ~D■, each load can be driven.

The father, 01ffi, is an output port that outputs an acknowledge signal ACK sent to the copying machine body B IIC. Father, the driver 128 including the electric brake has an output capo) 0. ．．
The M3CW signal and the M3CCM signal are respectively inputted from the motor 04 to control the rotation of the carrier M3. or,
129 is also an electric brake circuit, M2 from the output boat Os
When the signal is turned off, the separation motor M2 is turned off and the electric brake is instantaneously applied.

Next, the above-mentioned serial method will be explained.

Figure 17 (1) is a timing chart of serial transfer. From the copying machine body B, a request signal It W
Q is constantly transmitted at a certain interval. The input signal RBQ is the input port of the microcomputer 120. When the double-sided original circulation device inputs an acknowledge signal AeK from the output port 0□ of the microcomputer 120, the copying machine main body synchronizes with the clock signal 80K output from the input port 8CKK of the microcomputer 120 from the copying machine main body B. B
80 bits of serial data from the double-sided original circulating device are transferred in units of 8 bits per request. For detailed timing, please refer to μmC0M4
This is the same method as 3N serial transfer, so it will be omitted.

Also, the field PLDi1 shown in Figure 17 (2) is 8-bit data sent to the double-sided document circulating device, bit 7 is a field designation bit and is always 10'', and bit 6 is the document feed of the copying machine body B. Bit 5 is the original ejection signal for ejecting the original only when the copying machine is BOJAM, at the end of final exposure, etc. Bits 3 to oFi are the original document Operation command signals for performing each of the following operations: exclusion and retraction, exclusion and counterfeeding, anti-exclusion and re-feeding, anti-exclusion and re-feeding, and repeating operations. i.

(field FLI shown in Figure 17 (3))
01. FLDO2 and FLDO3 are data of 24 bits in total, 8 bits each, which are transmitted by the multi-Si main body BFC. Each bit 7.6 has a field designation bit, and each field can be discriminated. Bit 5 of FLDO1 is conveyed and the original is set on the Latin glass 12 (Fig. 1) Ic, and the original feeding completion signal is turned on. Bit 4 is the original feeding completion signal when the original feeding signal from the copying machine main body I3 is received. Bit 3 is a driving signal that is turned on while the double-sided original circulating device is executing the original feeding sequence, especially when other components such as the motor are turned on. This is to suppress the maximum power consumption of the entire system including B. For example, this can be done by turning off the halogen lamp in the fuser 39 of the copying machine body B while this signal is off. . Bits 2 to 0 indicate the original
fI! 4 This indicates the document size signal detected by the sensor 13.14 during conveyance from the tray 1 to the platen glass 12. For example, for A4, bits 2 to 0 are o.
, o, i, and the original 64 paper feeding completion signal is sent to the copying machine body B at the same time as 0. Also, bit 5 of PLDO2 indicates that the last document has been fed in one circulation of documents, and the cycle end sensor is activated. By detecting the partition arm 22 (Fig. 1) that has rotated due to its own weight, the arm 819 (Fig. 1)
This is the cycle end signal that turns on. Further, bit 4 indicates the state of a document detection signal that is turned on when a document is placed on the document table l (FIG. 1). Bits 3 to 0 of l'LD02 and bits 3 to 0 of I'LDQ3 are Ma sheet number signals for transmitting the number of recognized originals at the same time as the cycle end of the original is detected. , FLDO
It is expressed as a binary number with the a side as the lower order, and if it is Ic base 20
If it is a piece, it is 1! '1.1)02 bits 3-0, FLI
)03 Bits 3 to 0 are each 0.0.0°1mO,t
,0,0. becomes. Bit 5 of FLDO3 is double-sided JjK
J44 Circulation device This is a JAM signal that is generated when there is a failure in conveying the document inside the person. Bit 4 is the open/close micro switch M8.
126 (FIG. 15) is activated, that is, when the double-sided document circulating device A is opened, this is the #open signal. This signal is for copying originals that cannot be used by the double-sided document circulation device, such as books, etc. If this signal is activated and the copy button on the main body of the copier B is pressed, the double-sided document circulation device A4C does not send the document feed signal. , copying machine body B (D) starts the copying operation.

FIG. 19 is a timing chart showing the timing of each signal of the serial data described above with respect to each operation 135 of the double-sided original circulating device (1) F) A and the copying machine main body B. A serial signal sent from the 136-page copying machine body B.

Is 137 boring? The serial number (No. 1, 138) sent from a person to the copying machine body B shows the sequence in RDF A. In this example, one copy is made from two originals, and when the second original is ejected, the serial number is A jam occurs in the Dr. Next, l) The operation of F will be described with reference to the control flowcharts shown in FIGS. 19-30 and the timing charts shown in FIGS. 31-40.

FIG. 19 is a main flowchart for performing the operation sequence of H-1)P described above l), 8tep20
1 performs an initial reset operation when the power is turned on, turns off each output port, and also turns off the iLA inside the microcontroller 120.
Clear the M area and clear each counter, timer, command, etc. described later.

In the next K 5 step 202, check whether NM is in JAM or not.
and if it is in JAM, JAMuN8 at 8tep205
B'J' SUH ni 44, wait for JAM agsg'r, if & in JAM, proceed to 5th step 8tep 203.

At 8tep 203, it is determined whether the door of section A is open, and if it is open, the sequence (ItI) is ignored and the process proceeds to 5tap 208, but if it is closed, it is considered normal and the process proceeds to the next 8tep 204. 5tep204”t’ is 113EQUFiNcW CHBCK 8UB VCM
This is a routine that performs the operation sequence of the A section, and the details will be described later. Next 8te
p206 logs each timer started within 8tep2g4.
This is a routine that increments by 5 taps.
Step 207 determines whether there is an input to the IN'l' terminal to which either the conveyor lock or belt clock is input, and if so, increments each counter t-1 that was activated in step 204 described above.

5tep 208 Ha8IRIAL CklBCK 8
UB Km-+, the above-mentioned serial transfer is performed on the copier itself (
This is a routine that performs the operation sequence for performing part B). If main 7-sha is normal, 8tep202.20
3. After processing 204, 206, 207, 208, it returns to 8tep 202), and each SUB routine is configured to draw a loop, and each SUB routine is called by the microcomputer's CAL command, and after the processing is completed, it returns with the ag'r command. Next 8 steps
It is structured to proceed to

Figure 20 shows 8gQU at 8tep204 described by M+f.
This is a detailed flow of IBNCn C11nCK SOB.

5 Step 211 checks to see if the ref "-yo" mouth, which will be described later, is set. If it is set, it is determined that the sequence is in progress, and the process goes to Step 214. If it is not set, it is checked from the copying machine body B. The process advances to 5 step 212, where the operation waits for an operation start command.In 8 step 212, the above-mentioned serial data (original paper feed signal) is
The operation should start if any of the and (original ejection signal) is set (proceed to 8 step 213. However, the original ejection signal No. 1) is set only when (Original feeding completion No. 11) is set. In other words, if the platenger of the copying machine is also set, proceed to R13'l'' and proceed to 814Q.
LJL3Nel(C1(geK S[JB enters period state.

Next, 5tep213fjct6 will be explained. 8*ep2
Step 13 is a 5 step step in which the operation mode of the sequence operation is specified and the operation is started. [λ] "'T: 11 instruction: is set so that it is performed only at the start of operation, and during operation, 8tep 213 is ignored like the judgment of 5tep 211. Furthermore, at 5tep and 213, serial data is used. When the copying operation of a certain four-way machine body B is completed, the (original paper feeding complete signal) is reset, and the (in-operation signal) that notifies the start of operation is set, and when the circulation of the original is completed, the ( Cycle Entry No. 6) is reset.Then, it sets ['M1'l level 17, which will be described later, and commands the start of paper feeding operation.Furthermore, the copying machine body B
The contents of the (operation command signal) specifying the operation mode are stored in the table counter (MDCN), and the next 8t
In 08tep214, which proceeds to ep214, a branch is made depending on the contents of the table counter (MDCN) O mentioned above, and (MDC
N) = 0 (When D, proceed to exclusion upper picture SOB to perform exclusion upper picture mode processing, below (MDCN) = 1, positive exclusion and reverse feed 80 H, (MDCN) = 2, anti exclusion upper picture SU
B.

(Ml)CN) -3, anti-exhaust feed 5tJB, (MD
If CN)=4, proceed to the return SOB. In this case, the operation mode is specified in step 5213 at the start of operation, the contents of the table counter (Ml) ON) are determined according to the mode, and the processing routine for each mode is proceeded to depending on the contents of the table counter (MDCN) in step 5214. For example, the first page of a document is fed and copied using the overprint operation, and when the next operation starts, the mode specification is changed.
If you specify the anti-ejecting and reproducing operation, the mode of the next operation will be changed at the start of the operation, such as feeding the first document in the anti-ejecting mode and feeding the second document in the refeeding mode. The structure is such that the lever can be controlled arbitrarily depending on the contents of the (operation command signal) of the copying machine itself.

FIG. 21 is a SUB routine for performing paper ejecting and feeding operations according to the operation command determined in the above-mentioned diagram g20. 5
Step 221 is a routine that performs an exclusion and overprinting operation, which proceeds sequentially to exclusion SUB, overprinting SOB, and paper feed completion SUB, which will be described later, and performs paper ejection, paper feeding, and paper feeding photon processing in parallel within each SUB routine. This progresses the sequence operation. Similarly, in 8tep222, 1 discharge/counterfeed operation, 8tep
At p223, an anti-exhaust over-drawing motion is performed, at step 8224, a counter-exhausting and refeeding motion is performed at t, and at step 5225, a repeating motion is performed. In each of 8 steps 221 to 224, it is determined whether a document discharge signal is set, and if it is set, only the discharge operation is performed, and in 8 steps 225, the operation is prohibited. Also each 5tep221~22
4, the process starts from the paper discharge wJ process, but if there is no document to be discharged on the platen glass 12 of the copying machine.

Do not eject the paper. Next, perform the ejection overprinting operation for two originals, and set it to 11.
This will be explained in detail with reference to the upper picture 8UB of Figure 22, the stop valve 8Ui5 of Figure @g25, and the flowchart of paper feeding completion sUB of Figure 27.

Now, the two original horizontal sheets are placed on the document table L, the exclusion overprint mode is designated from the copying machine body B, and the IM document feed signal is set, thereby starting the first ejection overprinting operation. The 1st page of the original is 8tep in Figure 22 [8tep in JB]
At step 231, the sensor ES (Fig. 1-1, 20) detects the document, and since the paper feed permission 0f command has been set at step 213 mentioned above, the paper feed permission command is reset to perform only the overprinting operation, and the paper feed permission command is reversed. Reset the permission IT command, set the paper feeding command, issue other operation prohibition commands, and set the JAM timer (J'l') up to the sensor 81 (Fig. 1-1, 13).
M) and separate motor M2 (Fig. 1-1 80).
), the table counter (iNcN) ["1" is set] to start document separation and proceed to 5 step 232. Each of the 8 tep branches into multiple branches depending on the contents of the table counter (iNcN), and as the operation progresses, the table counter (jNcN) is updated and the 5 tep are sequentially processed. Further, other table counters described later perform similar operations. Next, in step 232, the JAM timer (monitors until the end of JTMI and determines whether the leading edge of the separated document is detected by the sensor Sl, and if the time is up, determines that the separation is defective and sets the JAM) LESflT
Proceed to SUB. If the noise has stopped, the leading edge +4 of the document traveling through the conveyance QIa is brought into contact with the roller 6.6a, and in order to create a loop, the timer [TMII is started and the table force is increased.
Counter (1NcN) + 2 and proceed to the next 8 steps. At 8tep233, wait for the end of the timer (TMII), turn off the motor M2, create a loop, start the loop stabilization timer [TM2], set the table counter [5NON)←3, and proceed to the next 8te, pK〇〇. ,0. ．． 0. . The signal M3CW output from 8II
C.V.V.

Turn on CL and SL to start document conveyance, set the paper discharge permission kjJ command to be described later, and set the J' A hVi counter [JCNt'l
Start the table counter [1NCN] ← 4 and proceed to the next 5 steps 08tep 235 Monitor whether the leading edge of the document is detected at centimeter S2 until the JAM counter (JeNl) ends, and if it counts up, it is a delayed JAM. As, to rh8 itgsb'vSU
Proceed to B. If it is normal, the sensor S2 starts the JAM counter [JCN2] until the original passes through the sensor S2 to detect the accumulated JAM, and then starts the [original size counter] to start detecting the original size.
Next, table color/ri (iNcN) ← 5 as next 5te
Proceed to p.

At 8tep 236, it is checked whether or not the rear edge of the document is detected by the sensor 81, and if it is detected, the roller 6.6a is sent from the sensor 81.
Start the counter [CNl] that counts the number of clocks corresponding to the distance to
N0N)←6.

In 8tep237, the counter (CNI) of III
Signal C8 output from output boat O11 in compliance with termination
is turned on, and then the table counter (iNCN) is set to 7. When the document straddles both the roller 6.6a and the belt 8, the conveyance speed is equal to the conveyance speed of the roller 6.6a. The counter is dependent on the belt clock outputted from the disk 94 and the photoelectric sensor 95, because after the trailing edge of the document is removed from the roller 6.6a, the conveyance speed becomes equal to the conveyance speed of the belt 8. It becomes like that. Therefore, the front circle pica counter [:C
Nl] At the time of Nl, that is, when the trailing edge of the document passes through the roller 6.6a, input control φ1 of the clock to the interrupt terminal INT is performed.If the signal C8 is turned on in September, the clock is transferred from the lock to the belt clock. By switching, control can be continued without changing the correspondence between the transport distance and the clock. 8tep 238 ” (' indicates whether sensor S2 detects the trailing edge of the document.
CN2) is monitored until it is completed, and if it counts up, it advances to JAIVI IH'I' SUB as an IW storage JAM, and if it is normal, it immediately stops the [document size counter] when the trailing edge is detected, and then starts detecting the document size. At the same time, move the original to a predetermined position Jia on the platen glass 12 of the main body B of the copying machine.
Then, since one document has been fed, the table counter [1NcN] is incremented to count the number of manuscripts. Wait until ``1'' is completed, and at the end point tktV at a predetermined position on the platen glass 12.
In order to stop iaK accurately, the signals MaCW, MICW,
OL is turned off, signal BK is turned on, the MI paper medium command is reset, a reversal permission command to be described later is set, the table counter [1NcN] is turned over, and the process returns to 8tep 231 to enter the timing state. At this point, the paper feed permission command has been reset at 8tep 231, so it is in the timing state.

Next, the paper feed photon SUB will be explained with reference to FIG.

First, 8 steps with table counter (8BTCN) = 0
281 processing is being performed. Here, during the normal pregnancy movement,
Since the paper feeding command had been set, the paper feeding completion command was set and the machine was in a timed state. This is the 5te mentioned above
The paper feeding command is reset in p239, and the reversing command (described later) is also reset, so the timing state is canceled, and the paper feeding completion command is also set, so the brake BK92 on time timer (TMa) is activated. Start it,
Determine the original size from the contents of the [original size counter] and store the original size data in the (original size signal) in the serial data.
ZWeK 5 (processes JB, stores the (original size signal) in serial data, outputs a copy start command for the copying machine, and after checking this, the f-4 machine turns off the (original feed signal) Then, start the copying operation for the first sheet.Furthermore, turn off the switching solenoid SL to stop and eject the document conveyance path, and then turn the table counter (S
lmTCN) ← and proceed to the next step. 8tep
At 282, wait for the end of str i pita w [TM01, turn off the brake BK, and turn the table counter (811i
TCN ) ← Set to 2 and proceed to the next step. 5tep 2
83. At 284, processing is performed for the partition arm 22 and pulse motor 21 that detect one circulation of the document bundle (F),
At step 283, the sensor ES determines whether there is a next document on the document table l, and if there is no next document, it can be determined that the number of documents is one, so the pulse motor 21 is operated. Since it is not necessary, set the table counter (SgTCN)←4 and proceed to step 285. If there is a next original, it is checked whether [original sheet number counter'] = 1, and if it is not '1', it is determined that the number of original sheets is 2 or more, and the pulse motor 21 is processed by Hirozu, which has already been processed. Yes, the process advances to step 285 as described above.Currently, since (color/ri)==-1#, it is determined that this is the first page of the original, and the pulse motor 2101 is rotated to process the pulse motor 21. counter (PLSCN)
Start the table power '77 fi [: 5e
rTCN] ← Go to the next 5 steps K as 3.

In 8tep284, every time a routine/process is performed, the counter (PLSCN) + l is turned on, and if the pulse motor 21 is off, it is turned on, and if it is on, it is turned off, thereby increasing the step angle of the pulse motor by one. When the counter (PLSCN) ends, the te pulse motor 2
Rotate 1 once and place it on the table counter (8g'l).
”ON) ← Proceed to the next 5 steps as 4. 5 step 28
In step 5, the setting of the paper discharging command is checked so as to wait for the end of the current paper discharging process, and if it is reset, the paper discharging is determined to be completed (1-) and the process proceeds to the first stage. Since this is currently the first page of the manuscript, proceed as is and recycle Sensum 48 (19)
Since it is still the first document, the recycle sensor S continues to detect it, so it determines that the partition arm 22 remains on the document and recycles the document once. ,;t g is judged to be in particular. However, as will be described later, if there is no detection, W, one cycle of the process/fi is completed -t (I place [manuscript number counter]
Serial data (
The contents of the original sheet number counter are cleared, and at the same time, (cycle entry LI) is set to signal the end of one cycle to the copying machine main body.

In step 285, the paper feeding completion command is reset, the above-mentioned start command is reset, and the paper discharge permission command 0 reverse permission command is set. .

By resetting the start command at this point, the process advances to step 212 in FIG. 20, and if the copying machine is copying, both the (original eject signal) and (original feed signal) have been reset, so it is activated. It returns to 'r and becomes the period state.

Next, the exclusion and overlaying operation after the copying operation is completed will be explained.

In Fig. 20, when copying is completed, when the (original paper feed signal) is set, the process proceeds to 5tep 213° 214, where the (original paper feed signal) is reset and the top picture 5uts of soil cultivation is CA
LL 0 @ In the exclusion and overdrawing SUB in Figure 21, in order to perform exclusion of the first original and overwriting of the second original at the same time, the second
Parallel processing is performed for the exclusion SυB in FIG. 5 and the upper picture SUB in FIG. 22. In Figure 25, the 0 table counter ("EJCN) = 0 indicates the exclusion process for the first document.
) Proceed to step 5 261 and check whether the paper ejection permission command is set. In this case, since it is set at step 234 in the upper picture 8UB, the paper ejection permission command is reset and the paper ejection permission command is reset. Reset the paper permission command and reversal permission command, stop other operations tm, set the paddy and paper discharge commands, start the interval timer (TM, i), and set the table counter (l CN )←l Then proceed to the next 5 steps. 8tep262 waits for the interval timer (TM4) to end and inputs an error signal to the signal.
C.W.

CL is turned on to start the document ejection operation, and the ejection sensor 83
(15) Start the JAM counter (JCNIO) at t, set the table counter (B, J ON )←2, and proceed to the next 8tep. At step 8tep263, a JAM counter (JCNIOI) is monitored to see if the document progresses along the conveyance path and the paper discharge center tS3 detects the document tip n4 until the end of the JCNIOI.
Proceed to rr 8UB. If it is normal, the paper ejection stage 84 (
16) Start the JAM counter (JCNII) at i, set the table counter 1jiJcN]←3, and proceed to the next 8 steps. At 8tep 264, paper ejection sensor S4
JAM Kakunta (JeN) detects the leading edge of the original.
ll) until the end, and if it counts up, there will be a delay J.
As AM, proceed to JAM t(fjsET SUB.

If normal, then A Te No. 11 M3 (,'W,~L
teCW, CL, 08 wo, t 71. -C The conveyance is temporarily stopped and the first document is stopped at a position opposite to the roller 6.6b and the belt 8. By setting the simultaneous button paper feeding command, the start of the processing operation for two-sheet originals is commanded, the standby state of 8tep 231 in the normal feed 8 [JBk in Fig. 22 is released, and the paper feeding command is set. Separation of the second original is started as described above. Furthermore, the interval timer [TM7
] and table counter (hJcN) ←4
At 08tep 265, the process advances to the next 5tep, and waits for 1% of the interval timer [:TM7] to be completed, and then enters the timing state until the paper feeding command and paper ejection permission command are set. In FIG. 22, the processing operation for the second document progresses, and the paper discharge permission command is set at 5tep 234, that is, at the time when the conveyance of the second document starts.
In p265, proceed to the next step and reset the paper ejection permission command, and set the JAM counter [jJCN] until the document passes through sensor S4.
12], further turns on the signal M3CW, starts the paper ejection operation, sets the table counter [EJCN]←5, and advances to the next 5 steps K08tep 266 Teit:L
Whether the safety tS4 detects the rear edge of the document (JCN12
Monitor until the end of 1, and if it counts up, it will be a trade jam.
Proceed to JAM agsg'r 8UB. IE Normally, the conveyance path Vlatl-advanced paper ejection rotation timer (TM
Start the (-kawa'I゛) and move the table color (g
JeN)←Proceed to the next 5 steps as 608tep 26
At 7°, wait for the end of the post-discharge rotation timer ['l'MOUi''), turn off the signal M3 (,'W, reset the paper discharging command, complete the paper discharging operation, and as described later, Furthermore, this JJh paper movement is due to the paper ejection command from the copying machine itself.
In other words, if (original ejection signal) is set,
Reset the start command in Fig. 20, reset the serial data (in-operation signal), and complete all operations.
4-1 Ni! , 5tep 261 K74 wait. If this second document is being fed, the process of feeding complete SUB in FIG. No.) is set, and the second copy 4- is being made on the copying machine body #i. Also 2
One cycle of the original ends when the first sheet of original is fed, so
At 5tep 285, the recycle sensor ItS is turned off, a cycle end signal is output to the copier main body, the start command is turned off, and the cycle is turned off at 8te in FIG.
It becomes the period state at p212.

Next, the operation for excluding the second document will be explained.

In this case, the cycle end signal is output, so
The main body of the copying machine sets the (original discharge signal) after copying the second sheet to perform only paper discharge processing. At that point, only the exclusion SOB is processed in step 221 in the exclusion engineering ship SOB in FIG. 21, and the exclusion engineering ship 5IJH and the like are not executed. Exclusion SUB processing is performed in 5 steps in sequence in Figure 25 261
-(
The operation ends because the JM document ejection signal η) is set, and the start (1 command, (wJ production signal) is reset. ) to complete one-cycle copying of the original.

Next, the exclusion/rejection operation will be explained. This process is the second
The document placed on the top 11a of the platen glass 12 of the copying machine is processed by the iE discharge/reverse feed 8UH shown at 8tep222 in Figure 1, and the document placed on the top 11a of the platen glass 12 of the copying machine is outputted by the positive exhaust pressure discharge B in Figure 25, and is discharged from the conveyance path ■a, and is sent to the sensor S4. When the leading edge of the document reaches (Step
Z64)s The normal discharge operation is temporarily stopped and the reverse feeding operation of the next original is started, and after entering the conveyance path Ia by the normal feed SOB in FIG.
At step 8 (step 234), the exclusion operation is restarted again, and the printed paper document advances from the transport path ■a to ■a. On the other hand, at the end of the engineering operation, the document is on the glass surface 1a, and the document is temporarily stopped there, and the processing moves to the inverted SUB shown in Figures 23 and 24, and waits until the parallel exclusion operation is completed (Step 243) b As soon as it is finished, reverse 8 [JB processing is resumed and the original is moved to the transport path
It advances from 18-tva to va-vla to ■a-1a and stops at a predetermined position on the platen glass 12 surface of the copier, and the 27th
A copy operation start command is issued at paper feeding completion SUB in the figure.

Also, regarding the anti-engineering ship operation, see step 223 in Figure 21.
It is processed more than the anti-waste construction ship 80B4C shown in the figure.

The document placed on the platen glass 12 upper side 1g is ejected through the conveyance path 1[1a] by the anti-ejection SUB shown in FIG.
When the trailing edge of the document is detected by the conveyance path [VaK advance sensor 85 (17) (8tep 274), the counter-ejecting operation is temporarily stopped and the primary document processing operation is started. After the number of people ~i has been passed along the conveyance path Ia, the point in time when conveyance is started by the roller 6.61 (Step 234)
The anti-ejecting operation is started again at
It is discharged through fa. On the other hand, the fed document is transported through the transport path Ia
-IIaK, and when it stops at a predetermined position on the surface of the platen glass 12, a copy operation start command is output at the paper feeding completion SOB in FIG. 27.

Furthermore, regarding the repeating operation, refer to step 79 in Fig. 21.
The document that has been processed by the reversing 8UB shown in FIG.
It advances from Va to I'[a to ■a-5a, stops again at a predetermined position on the platen glass 12'rIiJ, and at time 9, outputs a copying operation start command at paper feeding completion SUB in FIG. 27.

Next, regarding the anti-exjection and re-feeding operation, we will take the case of the 2-Maihara Tachibana as an example.
This will be explained with reference to 4-chard (1) and 4-chard of anti-exclusion SUB in FIG. When two originals are placed on the original table L, the copying machine specifies the reverse and reverse feed mode, and the (original feed signal) is set, the Beep 224 in FIG. The action starts. The first sheet No. 16 (original) is processed as described above according to the engineering ship SUB in Fig. 22, moves along the conveyance path Ia-1a, and stops at a predetermined position on the platen glass surface of the copying machine body within 8tep 239. The reversal permission command is set and the sequence moves to the reversal SOB shown in Figures 23 and 24.

In FIG. 23, the table counter (TI(NCNI)
= o, so proceed to 8 step 241 and flip 1! )l!
Check the setting of the F town command and start the reversing operation, reset the reversal permission command, set the reversing command, turn on the signal 4SL to turn off the conveyance path cutting solenoid, and start the interval timer [TM4]. Start the table counter [Tru NCN] as 4-1 and then press the next (D 8te
Proceed to p. At step 242, wait for the completion of ('1'M4), turn off the drive signal BK of the brake 92, turn off the drive signal OL of the clutch 85, and start the cheap color/return ('I
'1LNCN] ← Proceed to the next 5 steps. 8te
Either check whether the whirring paper ejecting command is set in p243 and wait for the end of the paper ejecting operation, or the first document is being conveyed, so it has been reset, and the signal MICCW is turned on and the Pel 580 reverse drive is performed. and transport path 111a9.
1Va', start cDJkMly9nta [JeN3] with SeitS 51, and start cDJkMly9nta [JeN3] with Cheeple Karan p [T
ILNCN: ]4-3 and proceed to the next 8tep 65t
In ep244, it is monitored whether the sensor S5 detects the leading edge of the i-document until the JAM counter [JCN3] ends.
Once completed, JAMtJ8!4T S will be processed as a delayed JAM.
Proceed to OB. If the detection is normal, the signal M3CCW is turned on, the rollers 9 and 9a are rotated, the JAM counter / (J (1'N4) is started until the document comes out of the sensor s5, and the table counter ('1'RNCN]) is started. 4 and proceed to the next step 5. At step 5 245, sensor S5 detects the trailing edge of the document, but the JAM counter (
Congratulations until the end of JCN4), and when it ends, move on to @JAM and te JAM ILEsEi'S[J13. If normal, signal M3CCW, Mt CCW.

Turn off all CL, SL, and 08, stop the document transport in the transport path ■a, and set the interval timer [TM5].
Start the table counter [1゛ruNCN]4
-5 and proceed to the first 8 steps 1) o At Step 246, wait for the interval timer [1°M5M) d completion and signal M
Turn on the aCW, rotate the roller 9.9a, advance the document to the conveyance path Va, and detect the OJA with the sensor 86 (18)1.
Start the M counter [:JCN5]k, set the table counter ('l'1LNcN)←6, and proceed to the next 5 steps. 8tep247 Monitor until the end of the JAM counter (JCN5) to see if the sensor S6 detects the tip of the original material, and if it ends, set JAM R, N8E as a slow grinding JAM.
Proceed to T SUB. If normal, g@ is roller 10,
From 10J1, proceed through the conveyance path ■ak in the direction of p-211 and 11m, start the JAM kakunta (JeN6) until the document comes out of the sensor S6, and press the table counter (
(NCN) Proceed to the next 5 steps as 4-7. 8
In step 248, it is monitored whether the sensor S6 detects the trailing edge of the document until the end of JAM Kakunta [;
Proceed to SUB. If normal, turn off the signal M3CW, stop the document on the transport path ■a, and set the interval timer [:T
Start with M6ml and press the table counter
I ←a and proceed to the next 5 steps. At step 8tep249, wait for the end of the interval timer (TM6), and then turn on the signal M.
3cc*, CL and SL are all turned on to start driving, and the document is transferred to the transport path vl by 4-rato and xoa.
advance to la, and set the JAM counter [J
CN7) and table force +7 y p [
'l'1LNCN] Proceed to the next 5 steps as 4-9.

In the yA24 figure, at step 8tep251, the JAM timer [:JCN7
] until the end of the JAM.
Proceed to AM HIT SOB. Next 5tep K4 as normal 4-10. At 8tep 252, the transport path ■
Whether sensor S3 detects the leading edge of the document moving along path aJ
It monitors until the AM counter [JCN9) ends, and when it ends, it advances to JAMkLgsgTSUB as a delayed JAN. If it is normal, then J until the document passes through sensor S3.
Start the AM timer [:JCN9] and start the next 5 steps as the table counter (TILNcN) 4-11.
Proceed to. 5tep 253 monitors whether the sensor S3 detects the trailing edge of the document until the JAM counter [JeN9] is completed, and when the JAM counter [JeN9] is completed, it is
Proceed to AM le fiis143T SUB. If it is normal, the document passes through the rollers 6 and 6b, advances along the conveyance path 1a, and is papered in a state dependent on the drive of the belt 8. At this point, the signal C is output.
8 and switch the clock input to the interrupt terminal INT from the transport lock to the belt clock.As mentioned above, without changing the correspondence between the clock and the transport distance, set the clock to the specified position on the platen glass surface of the copier main body. Transport distance up to 11
Start the registration counter (ILGcN 2 ) corresponding to 1, and start the register counter y I (TILNeN
) Proceed to the next 5 steps as +-12.

At 8tep254, register counter [几GCN2]
Attending the end of , polarization MxeW off, CL off, BK
Turn it on to obtain an accurate stop position, reset the reversing command, return the table counter (TRNCN) to β, and complete the reversing process.

In this state, the reprint sequence is completed, and the processing moves to the paper feed photon 80B shown in FIG. Start the copy operation.

Next, the anti-excitation operation of the first sheet IIA@ and the anti-feeding operation of the second sheet of original after completion of one-sheet l:l original copying will be explained.

When the copying operation is completed, the copier main unit starts (original feeding (i)
(No.), and since the anti-discharge/reverse feeding mode is specified, perform the process of step 224 in Figure 21, and first start with the anti-discharge operation of the first document.
In B, since the table counter (NJCNI = 0) is set to o8tep 271, which performs the process of 8te19271, the paper discharge permission command is set in 8tep234 of FIG. 22, so the process proceeds to the next step and issues the paper discharge permission command. reset the paper feed permission command 1, reset the reversal permission command, prohibit the reversal operation of the factory ship 1, set the paper discharge command, turn on the signal SL, and make the document discharge proceed to the transport path 11a. Start the interval timer (TM4) and set the table counter CFiJ CN) ←I
At 08tep272, which advances to the next 8tep, waits for the end of the interval timer [TM4] and then turns on the signal M.
I Turn on CCW, turn on CL, start the document ejection drive, proceed along the conveyance path ff13, start the JAM kakunta (JCN3) up to sensor S5, and turn on the table color (gJ).
CN] Proceed to the next 5 steps K as 4-2. Bt
In ep273, whether or not the sensor S5 detects the leading edge of the document is monitored until the end of the JAM counter (JCN3), and when the end of the JAM counter (JCN3), the process proceeds to JAM gsgT8LJB as a delayed JAM. If it is normal, turn on Iza No. M3CCW and turn on roller 9.
, 9a to advance the WA bucket to the conveyance path IVJI,
JAM counter (Je) until the original passes through sensor S5
N, i) and table counter (gJ C
N) Set it to ←3 and proceed to the next 5 steps. 8te9274
Then, check whether the sensor S5 detects the original tentatively yIAt-J
AM counter I:JCN4] is monitored until it ends, and when it ends, the JAM counter J138Jit'i' is recorded as a retained JAM.
Proceed to SUB. If normal, signal M3CCW off, MI
CCW off, CL off, SL off, and CS off to stop the original on the transport path tVa. At the same time, by setting a paper feed permission command, a command is given to start the counter-feeding operation of the second document, and the timing state of step 231 in FIG. 22 is canceled.
Set the feeding command and start separating the second document 0
Furthermore, start the interval timer (TM5),
Table timer (EJCN) ← 4 and proceed to the next 8 steps oStep 275
After waiting for the completion of step 5), the system remains in the timing state until the paper feeding command and the paper discharge permission command are set. On the other hand, the paper feeding operation for the second sheet of original progresses, and the paper ejection permission command is set at 5tep 234 in FIG. is advanced from conveyance path ■a to va, JAΔ(timer (JeNs:l) is started up to sensor S6, table counter (EJCN) is set to ←5, and the process proceeds to the next 5 steps.

At 5tep276 on 1st, Senna S6 monitors whether the leading edge of the document is detected until the JAM timer (JeN5) ends, and when it ends, it is set as -M extended JAM.
Proceed to 1sUB. If it is normal, the original is placed on rollers io, t.
oa, proceed to the conveyance path ■a, start the JAM counter (JeN6) until the document comes out of the sensor S6, set the table counter [NJ CN ] 4-6, and proceed to the next 8tep. At 08tep 277, the JAM counter (JeN6) is started.
Check whether JAN1 counter (Je) detects the entire trailing edge of the original.
N6) is monitored until it ends, and when it ends, it is set to swJAM and proceeds to TeJAM RESET RUB. If it is normal, proceed through the document transport path ■a.

Roller 11. lla or υ, the rotation timer after paper ejection ('1
'MOLl'r], start the table counter (
EJ CN ) ← 7 and proceed to the next step. 8tep
278 waits for the end of rotation after paper ejection (TMOUT) and then
Turn off No. 5 MaCW, stop the paper ejection drive, reset the paper ejection command, and turn off the cheap color 7 (kJJC) as described above.
N) ← Set to 9 and return to 8tepg71 to enter the timing state. On the other hand, the paper feed processing company restarts the reversing operation at step 243 in FIG. 23 because it is waiting for the reset of the ejecting command, and performs paper feed photon processing from step 281 in FIG. Commands the main unit to copy the second sheet of paper.Next, the second original is ejected only by setting the (original ejection signal) from the copying machine main body as described above. Process with anti-exclusion SUB in Figure 26, 5tep 2
Proceed to steps 71 to 278, and at step 27B, the (original ejection signal) is set, so reset the start command, reset the (operating signal), and end all operations.O Next, we will explain jam processing. . JAMRE8W'l
'The operation of SUB is shown in @28 diagram at 8tep29
1, all loads are turned off, a jam command is set, the signal JAM from the output capo 011 is turned on, and the jam lamp 24 is turned on.

Furthermore, set the serial data (JAJfi number), and then in step 292, check whether each document detection sensor 81 to S6 and BS are detecting the document, and if even one is detected, proceed to the next step K. JAM an
sg'r is not done. 8tep29 when the operator removes the original and turns off the W and detection signals from all sensors.
Proceed to step 3. Here, it is determined whether the operator has opened/closed the door, and once it has been performed, the process proceeds to step 294, where the JAM command is reset, and the signal J A from the output boat 011 is reset.
Turn off M, reset (JAM signal), reset all commands, and reset all counter timers to complete the JAM signal.

Next, document size detection processing will be explained.

Referring to FIG. 31, the 8IZBC'K SUB will be explained.

The fed original is counted by the [original size counter] while the sensor S2 detects the original due to the transport lock and belt clock, that is, from the leading edge of the original to the trailing edge, and data corresponding to the size is stored. has been done. Then, the document size is determined by comparing the data of the [manuscript size counter] with the data of predetermined document sizes from 3 to B5''.For example, if A4 is B
51L data>[Original size counter]≧A4 data It can be determined when the relationship is satisfied, and processing is performed such as setting the serial data (original size signal) kl to be sent to the main body of the copying machine.

After determining the size at the end of processing, the (original size counter) is cleared and in preparation for detecting the size of the next fed document, the document size is determined one by one. Also, at this time, when the original whose size has been detected is subsequently reversed or ejected, a Uradome JAM counter is set for each sensor, and the data of the counter is used as the measured original size data. By adding α to the 9th value, more accurate jamming jam detection is performed.

Next, the serial transfer method will be explained. FIG. 60 is a flowchart for performing serial communication with the main body described above, in which it is checked at 5 top 301 whether a request signal REQ, which is a serial communication request signal from the main body, has been input, and if input is present, serial communication is started.
In 8top302, microcomputer 1 sends data to the main unit.
The data storage register (SIR) outputs to the SO terminal of 20.
EG) of the above-mentioned 8-bit serial transmission data (FLD
Ol) (FLDO2) (FLDO3) to the counter (
5OCN), outputs the contents of the register (StFtEG) to the SO terminal, and turns on the acknowledge signal A (3K) that informs the main unit that serial communication is ready.Here, between main unit B and main unit A) V The serial communication is automatically performed using the μ50M41N method, and the 5top 306 checks until the serial 8bxt communication is completed, and 8 bits of data are exchanged. At 5top6o4, when the serial communication is finished, acknowledge - QACK is turned off, data is received from the main body, and data is transferred from the S1 terminal of the main unit to the register [31RE
G) and further store its contents in the aforementioned 8-bit serial reception data (FLDii). Also, the contents of the aforementioned counter (5OCN) are incremented, (S
OCN) = ! l Teareba rehi (5OGN) ←
0, the contents of (5OCN) are updated sequentially for each serial communication, and the serial transmission data stored in the register (SiREG) of 5top302 is sequentially CFLDOI) → (
FLDO2) → (FLDO3) → (FLDOl)...
...0 Also, if there is no request signal REQ input in 3tep301, serial communication is not expanded and 5top3Q5, 5te
Proceed to p306゜5 step 307 (FLDOl) (
This is 5top to set/reset data of FLDO2) (FLDO3).

5top 305 sets/resets the data (original detection signal) in (FLDO2) depending on whether or not the entrance original sensor (ES) 20 detects the original. 5top3
In 06, the data (#open signal) in (FLDO3) is set/reset depending on whether the open/close switch (MS) 126 is detected. Also, in 5top307, drive motor (Ml) 82. (M3) Sets the data (driving signal) in (FLDOi) depending on whether 97 is on or not.
Reset.

31 to 39 are timing charts of each part of the RDF in each operation mode controlled according to the above-mentioned 70-chart.
Figure 2 shows the case in which the first original is fed in reverse, Figure 33 shows the case in which the final original is ejected in normal rotation, Figure 34 shows the case in which the final original is ejected in reverse, and Figure 65 shows the case in which the original is ejected. In case of ship operation,
Figure 36 shows the case of document exclusion and counter-feeding operation, Figure 37 shows the case of manuscript counter-discharge and counter-feeding operation, Figure 38 shows the case of manuscript counter-displacement and counter-feeding operation, and Figure 39 shows the case of document turning back. Each case of operation is shown.

Although a reflective sensor is used in the above embodiment, a transmissive sensor, a microswitch, a reed switch, etc. may also be used.

Further, although the microcomputer's interrupt terminal 2] is used as a counting means to perform counting using a program, it is also possible to use a counter I (using 3)--a trigic circuit.

In addition, although the configuration is such that one clock is selected by the switching means and inputted to the interrupt terminal rπ, the switching means is removed and all clocks are put into the input hoard, so that the microcomputer program can be programmed. It is also possible to satisfy this purpose by changing the number of words.

In addition, although the clock signal is generated by driving the conveying means, the clock signal is generated by the rotating goo V or the like as the document is conveyed. According to the above, an arbitrary operation mode can be commanded to the document feeding device each time an image forming operation is completed, so that the operation of the document feeding device can be controlled by controlling the main body of the image forming device. Even if the specifications of the image forming apparatus change, it is not necessary to change the specifications of the document feeding device, and the present invention is highly versatile. Furthermore, the configuration is simplified and reliability is improved.

[Brief explanation of the drawing]

Fig. 1 is a double-sided copying machine with a double-sided document circulation device, SOHA is a diagram showing the state of the original or copy paper, Fig. 14 is a diagram showing the control circuit of the copying device shown in Fig. 1, and Fig. 15 is a line receiver. Figure 16 is a diagram showing the circuit configuration of the line driver, Figure 17 is a diagram to explain the serial transfer method, and Figure 18 is a diagram showing the double-sided original circulating device and each operation of the copying machine. 19 to 60 are control flowcharts of the double-sided document circulating device, and FIGS. 31 to 39 are timing charts of each operation mode of the double-sided document circulating device. In the figure, A is a double-sided original circulating device, B is the copying machine body,
C is sorter, 1 is document placement table, 8 is belt, 16-20
is a sensor, 21 is a pulse motor, 22 is a partition arm,
80, 82, 97 are motors, 85 is a clutch, 92 is a brake, 93, 103 is a beam four disc, 95, 105 is a photoelectric sensor, 107 is a switching solenoid, 120 is a microcomputer, Applicant: Canon Co., Ltd. Procedure Supplement Authoritative document (Self-supported Patent Office Commissioner Kazuo Wakasugi 2, Name of the invention Manuscript feeding device 3, Relationship with the person making the amendment Case) Patent applicant representative Ryu Kaku Part 4, Agent 5, Amendment Correct the target drawing 6 and correction content drawings ff122.24.25' and 32.36 as shown in the attached sheet.

Claims (1)

[Claims] (1) In a document feeding device that can feed documents in multiple operation modes, input the operation mode each time an image forming operation for one document is completed, and feed the document in the input operation mode. (2. A document feeding device according to claim 1, characterized in that the operation mode can be changed every time an image forming operation is completed.