JPS61183033A - Original sheet transfer device - Google Patents

Abstract

PURPOSE:To enable a smaller size of a device to be employed by transferring an original sheet in such a manner that it is transferred odd number times with no load applied under the same condition as that of an actual load condition so as to allow one side of the original to be read later on another side of it to be read, and then it is returned to a loading means where it is counterrotated. CONSTITUTION:When both sides of an original sheet is copied on both sides of a form, the lowermost original sheet out of original sheets on an original table 1 is first transferred on a platen glass by means of a feed belt 3 and a separation belt 5. Then, it is inducted into paths (IIIa) and (IVa) with a belt 8 rotated reversely. Then, it is forwarded to paths (Va) and (VIa) with a pair of transfer roller 9 reversely rotated, then, it is allowed to pass through a path (VIIa) with two pairs of transfer rollers 10 and 11 reversely rotated. This permits if to be set on the platen glass 12. Under this condition, a single side of the copy is copied by the copying machine as stated. Subsequently, the original sheet is allowed to pass through paths (IIIa) and (VIIa) permitting it to be set on the platen glass 12 where it is counterrotated. After both sides of the original have been copied, it is allowed to return from the transfer rollers a pair of 11 through paths (VIIa) and (VIa) to the uppermost position on the original table 1 where it is not counterrotated.

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a sheet document conveying device, and more specifically, for example, a sheet document conveying device that separates and feeds sheet documents one by one, guides them to a predetermined position, and then discharges the sheet document from the predetermined position. The present invention relates to a sheet document conveying device that turns a sheet document upside down and guides it to a predetermined position again.

[Prior art]

Traditionally, devices of this type have been used, for example, to load a stack of pages that make up a multi-page document into a supply tray that is placed above an exposed platen on the outside of a copier for original documents. Repeatedly pull out the lowest page of the instructed pages, with the side to be copied facing upwards, and in the order of the pages so that the
The page was configured to form a generally closed loop from the bottom of the supply tray through the exposed platen and back to the top of the supply tray. However, in such a configuration, circulated originals enter from the rear end of the original set on the supply tray, so the original size must be kept constant, or a partition plate must be installed on the tray depending on the original size. It was necessary to take into account the need to move objects such as , and to always hold the original in a fixed position.

In addition, since the closed loop is configured, there is a drawback that the driving sections must be distributed throughout the device.

Furthermore, in the conventional sheet document conveying device, an arc-shaped closed loop reversing guide in which the sheet document rotates once is used as a structure for reversing the front and back of the sheet document so that the front and back of the sheet document is reversed and guided to the exposure platen again. was.

Therefore, with the above-mentioned conventional sheet document conveying device, there are disadvantages in that the sheet document is forcibly bent by the closed-loop reversal guide, making the sheet document easily damaged or jammed, and the device is not adjusted according to the sheet document size. There was a disadvantage that it was easy to increase the size.

Furthermore, a device that performs double-sided copying using a circulation method copies one side of the original onto each side of copy paper, stores the resulting single-sided copy in an intermediate tray, and refeeds the paper from there. The method used was to copy the pages one after the other. For this reason, if copy paper jams during the process, the page order will be incorrect.
There is an inconvenience in that the copy paper remaining in the intermediate tray after single-sided copying and the copy paper after double-sided copying must be discarded and the copying process must be repeated.

Conventionally, in order to eliminate this drawback, a method has been devised in which a double-sided copy is obtained by reversing the front and back sides of each document using a circulation type double-sided copying method.

This starts copying from the second page or the second page from the end of the original, and after double-sided copying is completed, the copy is turned over again along with the original, and then the copied side is stacked on the output tray with the copied side facing down, making the same page as the original. You will get a double-sided copy of the order.

However, with this method, it is not possible to start copying from the first page or from the end of the manuscript;
After double-sided copying, the copy must be reversed to obtain the same page order as the original, which inevitably complicates the mechanism.

The present invention has been made in view of the drawbacks of the above-mentioned conventional examples, and an object of the present invention is to provide a novel sheet document conveying device.

Furthermore, the present invention has a simpler configuration and is smaller in size.

An object of the present invention is to provide a sheet document conveying device that can be lightweight.

A further object of the present invention is to provide a sheet document conveying device that can smoothly turn the sheet document upside down without putting any strain on the sheet document, and can be made more compact.

A further object of the present invention is to provide a sheet document conveying device that does not require reversing the front and back sides of transfer paper after double-sided copying.

〔Example〕

A detailed explanation will be given below based on the drawings. FIG. 1-1 is a longitudinal sectional front view showing a schematic configuration of an example of a double-sided copying apparatus of the present invention.

The copying apparatus of this example is broadly divided into two types: double-sided document circulation device A;
The copying machine main body B has a built-in copying process equipment, and a sorter C that sorts copy paper.

(1) Double-sided document circulation device A l is the document placement table, 2 is the paper feed belt drive shaft, 2a is the paper feed belt driven shaft, and the paper feed belt 3 is stretched between them, in the direction of arrow C in the figure. It is rotating. 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 document tray 1 are separated one by one from the bottom by the paper feed belt 3 and separation belt 5. 6 is a conveyance roller, and 6a*6b are rollers that are in pressure contact with the conveyance roller 6, respectively. Also, 9
, 10.11 are also conveyance rollers, and 9a, 10a, and lla are rollers that come into pressure contact with the rollers 9, 10.11, respectively. Further, 7 is a conveyor belt drive roller 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 is a conveyor belt driven roller located near the right side of the platen glass 12; A belt 8 is attached to the belt. The lower surface of this suspension belt 8 is a platen glass 12
facing or touching the upper surface of the Reference numerals 13 to 18 denote reflective optical sensors that detect the leading edge or trailing edge of a document, which are disposed at required locations on the document circulation path (paper path).

Further, 20 is a reflective optical sensor ES for detecting the document placed on the document tray 1, 19 is a reflective sensor (recycling sensor) R3 for detecting one circulation of the document bundle, and the partition arm 22 is rotated to the east by the pulse motor 21, and at that point the recycle sensor R519
is turned on, and then the originals are fed separately from the bottom original, and when the trailing edge of the final original passes through the partition arm 22,
2 has a mechanism in which the recycle sensor R319 is removed and turned off by its own weight.

(2) Copying machine body B 12 is a platen glass, 30 is a photosensitive drum driven to rotate in the direction of the arrow around the shaft 30a, 31 is a charger, 32 is a developer, 33 is a transfer charger, and 34 is a cleaner. be. 3
5 is a cassette for stocking copy paper; 36 is a paper feed roller that feeds the copy paper one by one from the cassette; 3
7-37a is a register roller, and 38 is a conveyance belt that conveys the copy paper after transfer to a fixing device 391139a. Reference numeral 40 indicates an intermediate tray for storing copy paper after single-sided copying, 41.41a indicates a drive shaft and a driven shaft of the paper feed belt 42, and 43.43a indicates a drive shaft and a driven shaft of a separation belt 44, which are stored in the intermediate tray 40. The mechanism is such that the copied paper is re-fed from the bottom.

Further, 45.45a is a paper discharge roller which feeds the paper after copying to the sorter C, or if the sorter C is not connected, discharges it to the paper discharge tray 46 as shown in FIGS. 1-2.

(3) Sorter C 60 is a conveyance roller, and 60a is a pressure roller, which feeds the copy paper sent out from the copying machine body B into the bins 61a to 61o. 62 is a fixing plate for the bottles 61a to 610, which has a notch groove 63 and
The fixed plate 62 and the fixing plate 62 are integrally connected to a chain 64 with a spring 65, and are movable upward and downward by being powered by rotating rollers 67 and 67a fixed to the shaft of a motor 66. It has become. 68 is 61a-6
It is a photoelectric sensor that detects up to 10 bin positions, and by detecting the notch groove 63, it determines which bin corresponds to the discharge port. Further, 69 is a photoelectric sensor that detects the trailing edge of the copy paper sent from the copying machine main body B. After detecting the trailing edge of the copy paper, it waits until the copy paper is completely stored in the bin, and waits until the copy paper is completely stored in the bin. When the bottle starts moving and the next notch is detected by the photoelectric sensor 68, the bottle is controlled to stop moving. In this manner, the copy sheets sent from the main body B during copying can be sequentially stored in the bins and sorted.

(4) Drive system of double-sided document circulation device A. Figure 2 is a cross-sectional rear view schematic diagram showing the drive unit. Driving force is transmitted to the belt drive shaft 4 through a gear 96. 82 is a motor M1. 83 is a motor pulley, 86 is a two-stage pulley, and belt 87 is connected to belt 8.
8 is transmitted by an electromagnetic clutch CL85. Also,
89 is also a two-stage pulley, which is integrated and transmits the driving force from the belt 88 to the belt 90, thereby constantly transmitting the driving force to the drive roller 7 of the conveyor belt 8 through the pulley 91. Further, 93 is a disc having a notched groove 94 which is rotated together with the two-stage pulley 89, and the amount of movement of the belt 8 can be detected by a photoelectric sensor 95. 92 is an electromagnetic brake BK which, when turned on, makes it possible to stop the belt 8 instantly.

Further, 97 is a motor M3, 98 is a gear, 99 is a pulley, 100, 101, 102 is a belt, and conveyance roller 6.
The driving force is transmitted to 9, 10, and 11. Also, 103
is a disc with a notched groove 104 that is rotated together with the pulley 99, and the conveyor roller 6.9°10 is detected by the photoelectric sensor 105.
．． 11 can be detected, that is, the amount of conveyance movement of the document can be detected. Further, reference numeral 23 denotes a switching pawl, and a solenoid 5L107 is used to switch whether the document on the platen glass 12 is conveyed in the direction of the conveyance roller 6 or the conveyance roller 9 using the fulcrum 106.

Next, the operation of the double-sided document circulation device A will be explained.

(i) Single-sided original - Single-sided copy (without sorter) In FIG. 1, a plurality of sheet-like single-sided originals with the page order aligned are placed on the original mounting table l with the first page facing upward. The placed originals are separated and fed one by one from the bottom by the paper feed belt 3 and the separation belt 5, and the fed originals pass through the paper path Ia and are transferred to the platen glass 12 by the conveyor belt 8. It is sent out with the side facing down. When the trailing edge of the document is detected by the sensor 14 (S2), 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 8 is instantly stopped. As a result, the document is automatically positioned and set at a predetermined position on the surface of the platen glass 12. In addition, sensor t3 (S
t) (Figure 1-1) is for detecting whether or not the document has been separated normally.
If 3 (Sl) does not detect the original, it is determined that there is a jam of the original and the conveyance is stopped.

When the original is positioned on the platen glass 12 in this way, a paper feeding completion signal (described later) is sent to the copying machine main body B, a copying operation is started, and a toner image corresponding to the image of the original is transferred to the photosensitive drum 30. formed on top. Also, cassette 35
One sheet of copy paper is fed from inside by the paper feed roller 36,
After passing through the paper path Ib, the toner image is transferred onto the upper surface thereof by the charger 33, passes through the paper path nb, passes through the fixing rollers 39, 39a, passes through the paper bus (b), and is discharged to the paper output tray 46. Ru. On the other hand, the exposed original is exposed to a halogen lamp 46 and optical mirrors 47a, 47b, and 47c.

After completing one original exposure using 47d, paper pass ■a, Vl
It is discharged through a. At the same time, the next original is fed in parallel by the above-described operation and positioned and set on the platen glass 12.

This parallel operation is an operation that simply circulates the originals, and the inversion of the original is not performed for the previous or next original in the middle, so it is called an evacuation operation. Detected by sensor R319 and sends a cycle end signal (described later) to 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.

(:i) Single-sided original - Single-sided copy (with sorter) The operation is almost the same as in the case of (I) Single-sided original - Single-sided copy (without sorter) explained in the previous section, but when there is no sorter C, one side of a certain original In contrast, when sorter C is installed, exposure of a certain document is performed several times for the copy setting, and the copy paper is sequentially ejected. are stored in bins 61a to 6io of sorter C while being bin shifted. In other words, the existence of the sorter C makes it possible to circulate the original once and copy a set number of copies.

(iii) Double-sided original - double-sided copying (without sorter) Assuming that there are three originals on the original placing tray 1, the pages of the originals placed on one original placing table 1 are arranged in page order as shown in FIG. Assuming that the desired number of copies is 3, the copy sheets after copying are stacked on the paper output tray 46 as shown in FIG. The condition will be the same. I will explain the operation after that. First, the 5th and 6th page originals are conveyed to the top of the platen glass 12, and then the motors M 182 and M 397 (Fig. 2) are reversed and at the same time, the solenoid SLI 07 is turned on to switch the paper ejection route, and the original is transported to the top of the platen glass 12. Paper pass IIIa, IV
a, and is held by conveyance rollers 9, 9a and conveyed.

When sensor 5517 detects the trailing edge of the document, motor M397 is stopped. After a certain period of time, motor M
397 is rotated forward, and the original passes through paper buses Va and Vla.
It is transported by transport rollers 10.degree. 10a and 11.11a. When the sensor 5618 detects the trailing edge of the document, the motor M397 is stopped, and after a certain period of time, the motor M397 is reversed again, and the motor M182 is rotated forward, and the solenoid 5L23 is turned on, and the document passes through the paper path. a, and is held by the belt 8 and conveyed. When the trailing edge of the document is detected by the sensor 5315, it starts counting the number of notched grooves 94 in the disc 93 (FIG. 2) from that point on, and after a predetermined count has been reached, the motor M182 is turned off and the clutch CL85 is turned off. is turned off, the brake BK92 is turned on, the rotational drive of the conveyor belt 8 is stopped instantaneously, and the original is set.The original on the original placing table l is set on the platen glass 12 while being inverted as above. Paper feeding operation,
That is, a reverse sheet feeding operation (hereinafter referred to as a reverse sheet feeding operation) is performed first, and then a sheet feeding completion signal is sent to the main body B of the copying machine. In the copying machine main body B, the original image is copied onto the copy paper in the same manner as in the above operation, but the copy paper discharged from the fixing rollers 39, 39a passes through the paper path mb and is placed in the intermediate position because the switching claw 48 is switched. It is placed on a tray 40 as shown in FIG.

On the other hand, for the original, the same repeating operation to position and set the 5th page of the original downward on the platen glass 12 as the exposure of the 6th page of the original is completed is the paper path ma, rVa, Va, VI.
a and ■a (this operation is hereinafter referred to as a repeated operation), then a paper feeding completion signal is sent to the copying machine body B again, the copying operation for the fifth page is performed, and the sheet is placed on the intermediate tray 40. The image of the fifth page is copied onto the back side of the copy paper on which the image of the sixth page has been copied, and the paper is discharged onto the paper discharge tray 46 with the image of the fifth page facing upward.

In addition, the originals on the platen glass 12 are placed in paper paths ■a and VI.
a through the conveyance roller 11. lla, the fifth page is ejected onto the original placed on the original placing table l with the fifth page facing upward (this operation is hereinafter referred to as an exclusion operation). From a certain time during this exclusion operation, the above-mentioned counter-feeding operation of the next original holding the fourth and third pages is performed in parallel with the exclusion operation, and the fourth page is positioned and set on the platen glass 12 with the fourth page facing downward. (This action of excluding and reversing in parallel is hereinafter referred to as the "excluding, repelling and refeeding" operation.) After that, the above-mentioned copying operation is performed as many times as necessary, and finally the copy paper becomes as shown in Figure 4. The document is ejected onto the paper ejection tray 46, and the document is also ejected onto the document tray 1 without changing the initial set state as shown in FIG.
Double-sided copying from a double-sided original is completed.

(i-Ma) 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, if there is no sorter C, the document is excluded and re-feeded every time the document is exposed, whereas if the sorter C is installed, the document is exposed a number of times for the set number of copies. The sheets are then stored on the intermediate tray 40 as shown in FIG. 6, then re-fed, copied on the side opposite to the image side, sorted by a sorter C, and sequentially stored, and finally Copy paper is stored in sorter C as shown in FIG. Further, the original is also discharged in the same state as the last set as shown in FIG. 3, and the entire process of copying is completed.

(V) Single-sided original - double-sided copying (without sorter) When the number of originals placed on the original table L is n, the lowest original is set to On, and the uppermost original is set to 01, Figure 8-1 or Figure 8- As shown in FIG. 2, two original document setting states are possible depending on whether n is an odd number or an even number. First, the case where n is an even number will be explained. No. 8-1
In the figure, first, the original 011 is set on the platen glass 12 in the factory operation, and the copied copy paper is put into the intermediate tray 40, and then the displacement operation is performed, and the original is exchanged with the original on and 0n-1. Next, the original 0n
Regarding -1, the original is exchanged with the next original 0n-2 by an ejecting operation without making a copy. While copying the original 0n-2 and putting the copy paper into the intermediate tray 40, the original 0n-3 is similarly exchanged with the next original 0n-3 by an ejector operation, and the original 0n-3 is set on the platen glass 12. At this time, if the document number 0n-3 is the first page document, the partition arm 22 is detected by the sensor R319, the copying machine body B receives the cycle end signal from the double-sided document circulation device A, and the number of documents n is 4. It is determined that it is an even number. For 0n-3, the original is exchanged with the next original ofl without copying, and the original is replaced with the original ofl.
is set on the platen glass 12. At this point, the original and copy paper are in the states shown in FIGS. 9-1 (1) to (3). Next, skip copying when the original is on, and copy when the original is on.
'-1 Excludes the original by the operation of the excavation ship, and the original 0n
-1 on the platen glass 12, and this original 0n-
1 on the copy paper that is fed from the bottom of the copy paper that has been copied on one side placed on the intermediate tray 40, that is, on the opposite side of the copy paper on which the fourth page has been copied. Copy the original 0n-1, that is, the third page, eject it onto the paper ejection tray 46, and repeat the same operation as described above.
The copy is skipped for the original On-2, and the second page of the intermediate tray 40 is copied on the opposite side of the copied copy paper for the original On-3, and one set of double-sided copy paper is made as shown in Fig. 1O-1. be discharged. Then, the copying operation for the first copy is repeated a set number of copies. If the number of copies is set to 3,
Finally, the copy paper is in the state shown in FIG. 10-2 and 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. 8th-
In FIG. 2, as in the case where the number of originals n is an even number, the original On is copied and transferred to the intermediate tray 40, the original On-1 is skipped, the original On-2 is copied and transferred to the intermediate tray 40,
Original On-3 is skipped, original 0n-4 is copied and the operation to the intermediate tray 40 is repeated, but original 0n-3 is
During the original exchange between 0°-4 and 0°-4, the copying machine body B receives the cycle end signal from the double-sided original circulation device A, and the number of originals is n.
It is determined that there are 5 cards, which is an odd number. And manuscript 0n
-4 and the next original On are exchanged, and the original On is set on the platen glass 12. At this point, the original and copy paper are in the state shown in FIGS. 9-2 (1) to (3).

Next, the copy operation for the original on is skipped, and the next original is turned on.
At the same time as this exchange, the copy paper on which the fifth page on the intermediate tray 40 has been copied passes through the paper paths vrb, rrb, mb and is copied on the intermediate tray 40 again. 0-order manuscript On placed at the top of the paper
-1 copy is made on the opposite side of the copy paper on which the third page on the intermediate tray 40 has been copied, and then again in the same way as the circulation path of the copy paper on the fifth page. Put it in the top. At the same time as this circulation, the original document 0n-1 is replaced with the next document 0n-2, and the original document 0n-2 is set on the platen glass 12. Then, the copying operation of the original 0n-2 is skipped, the copying of the original 0n-3 is performed on the reverse side of the copy paper on which the first page was copied on the intermediate tray 40, and the copying operation of the original 0n-4 is transferred to the intermediate tray 40 again. The copy operation is 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 sequentially conveyed from the bottom to the paper buses Vl b , II
A part of the double-sided copies are ejected onto the ejection tray 46 through the paper ejection tray 46 through 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 copy paper will eventually be placed in the cylinder 8 in the initial setting state, as shown in Figure 11.
-2 The state shown in Figure 2 will be reached and the copying will be completed.

(My) Single-sided original - double-sided copying (with sorter) The difference from the operation sequence in the case of (Y) single-sided original - double-sided copying (without sorter) explained in the previous section is that if there is no sorter C, one time for a certain original In contrast, when the sorter C is installed, the exposure of a certain document is performed several times as many times as the copies are set. When the number of originals is four as shown in FIG. 8-1 and the set number of copies is three, the copy paper on which even-numbered pages have been copied is once docked on the intermediate tray 40 as shown in FIG. 12-1. Then, it is fed from the bottom to copy odd pages, and sorter C is fed @l
The data is stored as shown in Figure 2-2, and the copy operation is completed. In addition, if the original is 5 sheets as shown in Figure 8-2 and the set number of copies is set to 3, the copy paper on which odd-numbered pages have been copied is placed on the intermediate tray 40 as shown in Figure 13-1. do. Then, the sheets are fed from the bottom to perform a copying operation for even-numbered pages, and then they are placed in the intermediate tray 40 again as shown in FIG. -3 As shown in Figure 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 copying operation as described above will be explained.

FIG. 14 is a schematic diagram of a control circuit for performing the above-mentioned sequence operation.
, the copying machine body B, and the sorter C are shown by dotted lines, and signals are transferred between devices A, B, and C using a serial transmission method via cable 122°B between A and 8, and cable 121 between 0 and 8. (described later). 123a.

123b, 123c, 123d are line receivers for receiving serial signals, using Schmitt TTL,
The circuit configuration is as shown in the figure. Also, 124a,
124b, 124c, 124d, 124e, 124f,
124g, 124h, f24i, 124J are line drivers for serial signal transmission, driver TTL
The circuit configuration is as shown in FIG. 16. Reference numeral 120 denotes a well-known one-chip microcomputer (hereinafter referred to as a microcomputer) having a built-in ROM, RAM, etc., and for example, a Nippon Electric Soso G-COM 43N can be used. The microcomputer 120 is supplied with 5V power from a DC power supply 125 to enable execution of internal programs. Input ports I1 to I10 of the microcomputer 120 receive input signals such as sensor signals, a signal from a microswitch MS126 that is activated when the double-sided original circulation device A is opened from the front, and a request signal REQ from the copying machine body B. Furthermore, either the conveyance lock output from the sensor 105 (FIG. 2) or the belt clock output from the sensor 95 (FIG. 2') is connected to the interrupt input terminal INT.
Q2. (or game) Q3 and an inverter Q4. The transfer lock and belt clock are switched using the switching signal C output from output port 013.
3127. Also, output port 01.02
．． If hydra z<D1-D11 are connected to 05-011, and each load can be driven via the drivers D1-D11.

Also, 012 is an acknowledge signal A sent to the copying machine body B.
This is an output port that outputs CK. Furthermore, the M3CW signal and the M3CCM signal are inputted from the output boat 03.04 to the driver 128 including an electric brake, respectively, to control the rotation of the transport motor M3. Further, 129 is also an electric brake circuit, and when the M22 section is turned off from the output port 05, the separation motor M2 is turned off and the electric brake is instantaneously applied.

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

FIG. 17(1) is a timing chart of serial transfer. The copying machine main body B always transmits a request signal REQ at a certain interval. Signal REQ
is input to the input port o1o of the microcomputer 120, the output port o12 of the microcomputer 120 of the double-sided document circulation device A is inputted to the input port o1o of the microcomputer 120.
7 clock signal ACK is output from the copying machine main body B, and the serial data Si from the copying machine main body B is synchronized with the clock signal SCK outputted from the input port of the microcomputer 120 from the copying machine main body B, and the double-sided document circulating device A The serial data SO from is transferred in units of 8 bits per request. For detailed timing information! -COM43N
This is the same method as serial transfer, so it will be omitted.

The field FLDi1 shown in FIG. 17(2) is 8-bit data sent to the double-sided original circulating device A, and bit 7 is a field designation bit that is always ``0'' and bit 6.
Bit 5 is a document feed signal that causes copying machine body B to feed and replace the original, and bit 5 is a document ejection signal that causes copying machine body B to only eject the original when jamming, at the end of final exposure, etc. The signals, bits 3 to 0, indicate the exclusion engineering ship, exclusion counterfeed, and
This is an operation command signal for performing each operation of anti-disposal ship, anti-displacement and refueling, and return repetition. For example, bit 3 is used for anti-disposal ship operation.
~0 is 0°0, 1. Becomes O. Also, Figure 17 (3)
The fields FLDOI, FLDO2, FLDO shown in
3 is data of 24 bits in total, 8 bits each, to be sent to the copying machine main body B. Each bit 7.6 has a field designation bit, making it possible to distinguish each field. F
Bit 5 of LDOI is transported and the original is placed on platen glass 1.
2 (Fig. 1), the document feed completion signal is turned on, bit 4 is the operating signal that is turned on when the document feed signal from the copying machine body B is received, and bit 3 is the double-sided document circulating device. A is a driving signal that is turned on while the document transport sequence is being executed, especially when a heavy load such as a motor is on. This signal is used to suppress the maximum power consumption of the entire system including the copying machine body B. This is possible, for example, by turning off the halogen lamp in the fixing device 39 of the main body B of the copying machine while this signal is on. Bit 2
~0 is the original placed on the platen glass 12 from the original tray L.
This indicates the document size signal detected by the sensors 13 and 14 while being conveyed. For example, for A4, bit 2
~0 becomes o, o, i, and is sent to the copying machine main body B almost simultaneously with the document feeding completion signal. Also, bit 5 of FLDO2 indicates that the last document is sent out in one circulation of documents.
This is a cycle end signal that is turned on when the cycle end sensor R319 (FIG. 1) detects the partition arm 22 (FIG. 1) that has rotated under its own weight. Also, bit 4
indicates the state of the document detection signal that is turned on when a document is placed on the document table 1 (FIG. 1). Bits 3 to 0 of FLDO2, Fl, and bits 3 to 0 of DO3 are document number signals for transmitting the number of recognized document sheets at the same time as the cycle end of the document is detected.
It is expressed as a binary number with the Oa side as the lower one, and if it is decimal 2
If it is 0, FLDO2 bits 3-0 and FLDO3 bits 3-0 are 0, 0, 0, 1, o, t, o, o, respectively.
becomes.

Bit 5 of FLDO3 is a JAM signal that is generated when a document feeding failure occurs in the double-sided document circulation device A, and bit 4 is a JAM signal that is generated when the opening/closing microswitch MSI26 (Fig. 15) is activated, that is, the double-sided document circulation device A is opened. This is the door open signal that is emitted when the door is opened. This signal is for copying an original such as a book for which the double-sided document circulation device A cannot be used. If this signal is present, when the copy button on the copying machine body B is pressed, a document feed signal is sent to the double-sided document circulation device A. First, the copying operation of the copying machine main body B is started.

FIG. 19 is a timing chart showing the timing of each signal of the serial data described above for each operation 135 of the double-sided document circulating device (RDF) A and the copying machine main body B.

136 is a serial signal sent from the copying machine main body B to the RDFA, 137 is a serial signal sent from the RDFA to the copying machine main body B, and 138 is a sequence within the RDFA. In this example, one copy is made from two originals, and the second
A jam occurs in the RDF when ejecting the first sheet of original.

Next, the operation of the RDF will be explained with reference to the control flowcharts shown in 19th to 301ffl and the timing charts shown in FIGS. 31 to 40.

FIG. 19 is a main flowchart for performing the above-mentioned RDF operation sequence. In step 201, an initial reset operation is performed when the power is turned on, and each output port is turned off, and the RAM area inside the microcomputer 120 is cleared. Clear each counter, timer, command, etc. described later. Next, in 5tep 202, it is determined whether the JAM is in progress, and if it is in the JAM, the JAM R is executed in 5tep 205.
Proceed to ESET SUB and JAM RESET
Wait for , and if it is not in JAM, proceed to the next 5 step 203. In 5 step 203, judge whether the door of section A is open. If it is open, ignore the sequence operation and proceed to 5 step 208, but if it is closed, proceed to 5 step 203. Assuming that it is normal, proceed to the next step 204.

In 5tep204, 5EQUENCE C) (ECK
Proceed to SUB, this is a routine that performs the operation sequence of the RDFA section, details of which will be described later in 0th order 5tep 2
06 is a routine that increments each timer started in 5tep 204 one by one, and 5tep 207
determines whether there is an input to the INT terminal to which either the conveyor lock or belt clock is input, and if so, increments each counter activated in step 204 described above by one.

5tep 208 is a routine that proceeds to 5IRIAL CHECKSUB and performs an operation sequence for performing the above-described serial transfer with the main body of the copying machine (section B). If the main flow is normal, 5 steps 202, 203, 204
, 206° 207. After processing 208, repeat 5tep2
Returning to 02, the configuration is to draw a loop, and each SUB
The routine is called by the microcomputer's CAL command, and after the processing is completed, it returns by the RET command and proceeds to the next 5 steps.

Figure 20 shows the 5EQUEN at 5tep204 mentioned above.
CE CHECK 5UBty) Detailed flow. In 5tep 211, it is checked whether 77-1t&+, which will be described later, is set, and if it is set, it is determined that the sequence operation is in progress, and the process proceeds to 5tep 214.
If it has not been set, the process advances to step 5212, in which the copying machine body B waits for an operation start command.

In step 212, the serial data mentioned above is
If either (original feed signal) or (original ejection signal) is set, proceed to step 5213 to start the operation.However, the original ejection signal) is the (original feed completion signal).
is set, that is, when an original is fed onto the platen glass 12 of the copying machine and copying is in progress, the receiver is turned on and the current [original number counter] is set to (original number signal), which will be described later. Notify the main unit by setting the contents. If neither of the above is set, proceed to RET and set 5EQUENCE.
CHECKSUB enters standby state 0th step 5tep
213 will be explained. Step 213 specifies the operation mode of the sequence operation and starts the operation.
First, in order to prohibit changing the operation mode from the start of operation until the end of the copy operation of copying machine body B, the operation mode is determined only at the start of operation.xp-hi+
is set, and 5tep 213 is ignored during operation, as in the judgment of 5tep 211. 5 more tons
In ep213, the serial data (original paper feeding completion signal) is set due to the completion of the copying operation of the copying machine body B.
It sets the (in-operation signal) that informs the start of operation, and also resets the (cycle end signal) that is output when one cycle of the original is completed. And Mmu'Mt, which will be described later.
Set 1 to command the start of paper feeding operation. Furthermore, specify the operation mode from the copying machine body B (operation command signal)
The contents of are stored in the table counter (MD CN) and proceed to the next 5 step 214L:. At step 5214, the process branches depending on the contents of the table counter (MDCN) mentioned above, and when (MDCN) = O, the process proceeds to exclusion engineering ship SUB to perform exclusion engineering ship mode processing, and hereafter (MDCN) = 1.
Now, the exclusion and reaction SUB.

When (MDCN)=2, exclusion engineering ship SUB, (MDCN)=
3 is an exclusion/return SUB.

When (MDCN)=4, the process returns to SUB.

In this case, the operation mode is specified in step 213 at the start of operation, and the table counter (MD C
N) and proceed to the processing routine of each mode depending on the contents of the table counter (MDCN) in step 5214.
If you feed paper, perform a copy operation, change the mode specification at the start of the next operation, and specify exclusion/reverse feeding operation, the first original will be ejected in exclusion mode, and the second original will be ejected in anti-feeding mode. The structure is such that the next operation mode can be arbitrarily changed at the start of operation, such as by feeding paper, according to the contents of the (operation command signal) of the copying machine main body.

FIG. 21 shows a SUB routine for performing paper ejecting and feeding operations according to the operation commands defined in FIG. 20 described above. 5t
ep221 is a routine that performs an exclusion engineering ship operation, which proceeds sequentially to exclusion SUB, engineering ship SUB, and paper feeding completion SUB, which will be described later, and performs paper ejection, paper feeding, and paper feeding completion processing in parallel in each SUB routine. The sequence operation is progressing.

Similarly, in 5tep222, the exclusion fist counterfeeding movement, 5tep2
At 23, an exclusion operation is performed, at 5tep 224, an exclusion and counterfeeding operation is performed, and at 5tep 225, a return repetition operation is performed. In each of Steps 221 to 224, it is determined whether a document ejection signal is set, and if it is set, only the ejection operation is performed, and in Step 225, the operation is prohibited.

Further, in each of steps 221 to 224, the process starts with a paper ejecting operation, but if there is no document to be ejected onto the platen glass 12 of the copying machine, the paper is not ejected.

Next, we will take the case of two manuscripts as an example of the exclusion engineering ship operation.
This will be explained in detail with reference to the flowcharts of the engineering ship SUB in FIG. 2, the exclusion SUB in FIG. 25, and the paper feeding completion SUB in FIG. 27.

Now, two stacks of originals are placed on the document mounting table L, the exclusion machine mode is designated from the copying machine main body B, and the document feed signal is set to start the exclusion machine operation. The engineering ship for the first manuscript is 5tep23 at the engineering ship SUB in Figure 22.
1, the sensor ES (Fig. 1-1 20) detects the original.
Since the paper feed permission command was set in step 213 mentioned above, the paper feed permission command is reset to perform only the engineering ship operation, the reversal permission command is reset, and the paper feeding in progress command is set.
A prohibition command for other operations is issued, and sensor S1 (
Start the JAM timer (JTM) up to 13) in Figure 1-1, turn on the 1-separation motor M2 (80 in Figure 1-1), start document separation, and set "1" to the table counter (iNCN) to proceed to 5 step 232. Set ゛.Each S
tep branches depending on the contents of the table counter (iNCN), and as the operation sequence progresses, the table counter (iNcN) is updated and 5 steps are sequentially processed. In step 232 of the 0th order, in which other table counters described later perform similar operations, the sensor S1 monitors whether the leading edge of the separated document is detected until the JAM timer (JTM) ends, and if the time is up, the document is separated. The document is determined to be defective and proceeds to JAM RESET SUB. If it is normal, the leading edge of the document traveling along the conveyance path Ia hits the roller 6.6a, and in order to create a loop, the timer (TM 1 ) is started, and the table counter (i
NCN) ← Proceed to the next 5 steps as 2, 5 step 233
Then, wait for the timer [1M1] to end, turn off motor M2, create a loop, and then start the loop stability timer (7M1).
2) Start the table counter (i NCN)
-3 and proceed to the next 5 steps.

At 5tep234, the loop stability timer (7M2)
Waiting for the end of the microcomputer 120 output port 03.06
,08. Signal M3 CW, MIC output from OLO
Turn on W, CL, and SL to start document conveyance, set a paper discharge permission command to be described later, start the JAM counter (JCNI) up to the sensor 32 (Fig. 1-1, 14), and set the table counter IjNCN. ) ← 4 as next 5te
Proceed to p, and in step 235, monitor whether the leading edge of the document is detected by the sensor S2 until the JAM counter (J CN l) is completed.

If the count is up, JAMRESE is executed as a delayed JAM.
Proceed to T SUB. If it is normal, start the JAM counter [JCN2] until the document passes through sensor S2 to detect accumulated JAM, and then [
Start the document size detection by starting the document size counter, then set the table counter (iNCN)←5 and proceed to the next 5 steps.In step 236, monitor whether the sensor S1 detects the trailing edge of the document, and if it does, sensor S
A counter (CNI) that counts the number of clocks corresponding to the distance from roller 6.6a is started from 1, and the table counter (iNCN) is set to 8. 5tep23
At step 7, the signal C8 output from the output port 013 is turned on after waiting for the end of the counter (CNI), and then the table counter (iNcN) is set to 7. This is because when the document straddles both roller 6.6a and belt 8, the conveyance speed is equal to the conveyance speed of roller 6.6a. is dependent on roller 6.6
After the trailing edge of the document is extracted from point a, the conveyance speed becomes equal to the conveyance speed of the belt 8, so that the belt clock immediately becomes dependent on the belt clock output from the disk 94 and the photoelectric sensor 95. Therefore, at the end of the counter (CN1), that is, at the time when the trailing edge of the document passes through the roller 6.6a, the switching signal C8, which controls the input of the clock to the interrupt terminal INT, is turned on to switch the clock from the conveyance lock to the belt crotch. This makes it possible to continue control without changing the correspondence between the transport distance and the clock.

In step 238, the JAM counter (JCN2) monitors whether the sensor S2 detects the trailing edge of the document until it ends, and if it counts up, the JAM is counted as a accumulated JAM.
Proceed to RESET SUB, and if normal, immediately stop [original size counter] when the trailing edge is detected, complete the original size detection, and at the same time register the original up to a predetermined position Ha on the platen glass 12 of the main body B of the copying machine. The counter (RGCNl) is started, and since one original has been transported, the [original sheet number counter] is incremented to count the number of originals and the table counter (iNC
N) ← Proceed to the next 5 steps as 8. In 5 step 239, wait for the registration counter (RGCNI) to finish, and at the end, turn off the signals M3CW, MICW, and CL in order to stop accurately at the predetermined position Ha on the platen glass 12. , turns on signal BK, resets the paper feeding command, resets the reversal permission command (described later), and sets the table counter (
iNCN)-0 and returns to 5tep231 to enter the timing state. At this point, in step 5231, the paper feed permission command has been reset, so it is in the timing state.

Next, paper feeding completion SUB will be explained with reference to FIG.

First, table counter (SETCN): 5teP at 0
281(7) processing. Here, during the normal pregnancy operation, the paper feeding command is set, so the paper feeding completion command is set and the state is reached. This is the S mentioned above.
Since the paper feeding command is reset in tep239 and the reversing command described later is also reset, the timing state is canceled and the paper feeding completion command is also set, so the brake BK92 on time timer (TM 3 ) SUB routine 5I for starting , determining the original size from the contents of the [original size counter], and storing the original size data in the [original size signal] in the serial data.
Processes ZECK SUB, further converts (original paper feeding completion signal) into serial data and outputs a copy start command for the copying machine, and after checking this, the copying machine turns off (original paper feeding signal) and outputs 1 Start copying the first sheet. Furthermore, the switching solenoid SL is turned off to switch the document conveyance path for exclusion.

Set the table counter (SETCN) to 1 and proceed to the next step. At step 5282, the timer (TM3
), turn off the brake BK, set the table counter (SETCN) to 2, and proceed to the next step, 5t.
In steps 283 and 284, the partition arm 22 and the pulse motor 21 are processed to detect one circulation of the document bundle, and in step 5283, the output of the sensor ES is judged to see if there is another document on the document table 1. If there is no next document, it can be determined that the number of documents is one, so there is no need to perform the processing of the pulse motor 21, and the process proceeds to step 285 with the table counter (SETCN)-4 set.

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 processing of the pulse motor 21 should have already been performed. Proceed to Step 285 in the same way as above.
Since (counter) is currently ``1'', it is determined that this is the first document, and the counter (PLSCN) causes the pulse motor 21 to rotate once in order to process the pulse motor 21.
Start the table counter (SETCN) ←
3, proceed to the next 5 steps, and at 5 step 284, the counter (PLSCN) + I is set each time the routine process is performed.
If the pulse motor 21 is off, turn it on.

If it is on, turn it off to advance the step angle of the pulse motor one by one, and when the counter (PLSCN) ends, the pulse motor 21 is rotated once, and the table counter (SETCN) is set to ←4 to proceed to the next 5 steps. , 5tep 285 checks the setting of the ejecting command to wait for the end of the ejecting process, and if it is reset, it is determined that ejecting is completed and the process proceeds to the next page.Currently, the first document is Therefore, proceed as is and recycle sensor R3
(19) monitors whether or not there is a detection point, and since it is still the first document, the recycling sensor R3 continues to detect it, so it determines that the partition arm 22 is still remaining on the document, and the document is circulated. is considered to be ongoing. However, as will be described later, if there is no detection, it is determined that one cycle of the original has ended, and the contents of the [original sheet number counter] are converted into serial data (original sheet number signal) as one set of original sheet number data.
, clear the contents of the document number counter, and at the same time set the (cycle end signal) to notify the copying machine of the end of one cycle.

In step Z85, the paper feed permission command is further reset,
Reset the start command mentioned above.

Paper discharge permission command 2 A reversal permission command is set, and the table counter (SETCN) is set to ←O to enter the standby state.

By resetting the start command at this point, the process advances to step 212 in Figure 20, and if the copying machine is copying, the (original eject signal) and (original feed signal) have both been reset, so the RET is activated. It returns to a waiting state.

Next, we will explain the operation of the exclusion vessel after the copy operation is completed.
In Fig. 20, when copying is completed, when the (original paper feed signal) is set, the process proceeds to step 5213 and 214, where the (original paper feed completion signal) is reset and the exclusion vessel SUB is CALLed.
do.

In order to perform the exclusion of the first manuscript and the construction of the second manuscript at the same time in the exclusion engineering ship SUB shown in Fig. 21, the exclusion SUB shown in Fig. 25 and the engineering ship SUB shown in Fig. 22 are processed in parallel. 2
Referring to FIG. 5, the exclusion process for the first document will be explained. When the table counter (EJCN) = 0, proceed to 5tep 261 and check whether the paper ejection permission command is set. In this case, since it is set at 5tep 234 in the engineering ship SUB, proceed to the next step and reset the paper ejection permission command. death,
Furthermore, the paper feed permission command and reversal permission command are reset, other operations are prohibited, the paper discharge command is set, the interval timer (TM4) is started, the table counter (E J CN) is set to 1, and the next Proceed to Step 5
In step262, after waiting for the end of the interval timer (TM4), the signals MICW and CL are turned on to start the document ejection operation, the JAM counter (JCNIQ) up to the ejection sensor 33 (15) is started, and the table counter (E
JCN) ← Set to 2 and proceed to the next 5 steps.

In step 5263, the document progresses through the conveyance path ■a, and the JAM counter (
JCNIO) until the end, and if the count increases, it is regarded as a delayed JAM and goes to JAM RESET 5UEI ii[t/, if normal, starts the JAM counter (JCNII) up to the paper discharge sensor 54 (ts), and starts the JAM counter (JCNII) up to the table counter (EJCN). )-3 and proceed to the next 5 steps. In step 264, the paper ejection sensor s4 monitors whether the leading edge of the document is detected until the JAM counter (JCN11) ends, and if the count increases, the JAM is counted as a delayed JAM.
Proceed to RESETSUB. If normal, at that point the signals M 3 CW , M ICCW , CL ,
The CS is turned off to temporarily stop the conveyance, and the first document is stopped at a position where it straddles the roller 6.degree. 6b and the belt 8. At the same time, by setting the paper feed permission command, the start of the engineering ship operation for the second sheet of the original is commanded, and 5tep2 in the engineering ship SUB in Fig. 22 is sent.
31 is released from the standby state, a paper feeding command is set, and separation of the second document is started as described above. Furthermore, start the interval timer (7M7), set the table counter (EJCN) to -4, and proceed to the next 5tep, 5tep2.
At step 65, the CPU waits for the interval timer (7M7) to end, and then enters a standby state until the paper feeding command and the paper discharge permission command are set. In FIG. 22, the processing operation for the second document progresses, and the paper ejection permission command is set at 5tep234, that is, at the time when the conveyance of the second document starts.
In step 265, proceed to the next step and reset the paper discharge permission command,
JAM counter (JC) until the original passes through sensor S4
N12) and then turn on signal M3CW,
Start paper ejecting operation, set table counter (EJCN)←5 and proceed to next 5teP, sensor S4 at 5tep266
Detects the trailing edge of the original (JCN12) until the end of the count up.
M Proceed to RESETSUB, if normal, transfer path V
ia, start the rotation timer (TMOUT) after paper discharge, and set the table counter (EJCN)←6 to the next 5t.
Proceed to ep, in step 267, the rotation timer after paper ejection (
TMOUT), the signal M3 CW is turned off, the paper ejection command is reset, and the paper ejection operation is completed. In other words, if (original discharge signal) is set, the start command shown in FIG. 20 is reset, the serial data (in-operation signal) is reset,
After all operations are completed, the table counter (EJCN
) ← Set to O and return to 5step 261 to see the timing. If this second document is being fed, the feeding completion SU in Figure 27
The process of B is being continued in parallel with the first document discharge process, (W, document feeding completion signal) is set, and the copying machine main body is copying the second document. Also, one cycle of the original is completed by feeding the second original, so at step 285.

The recycling sensor R5 is turned off and a cycle end signal is output to the copying machine main body.

Turn off the start command and go to step 21 in Figure 20.
At 2, it enters the standby state.

Next, the exclusion operation for the second original will be used. In this case, since the cycle end signal has been output, the main body of the copying machine sets the (original discharge signal) after the second copy is completed in order to perform only paper discharge processing. At that point, in the exclusion engineering ship SUB in Figure 21, only the exclusion SUB is processed in step 221, and the engineering ship SUB etc. are not executed.The exclusion SUB processing is sequentially performed from steps 261 to 267 in Figure 25, and as described above in step 267 ( The operation ends because the original ejection signal) is set, and the start command, (
The copying machine body checks this, turns off the (original discharge signal), and completes the one-cycle copying of the original.

Next, the exclusion/rejection operation will be explained. This process is the second
This is carried out by the exclusion/reverse feeding SUB shown in step 222 in Figure 1, and the original on II a on the platen glass 12 of the copying machine is ejected from the transport path ■a by the exclusion SUB in Figure 25, and the leading edge of the original is placed in the sensor S4. At the point when (S t
e p. 264), the exclusion operation is temporarily stopped and the refeeding operation of the next document is started, and after entering the conveyance path Ia by the engineering ship SUB in Fig. 22 and performing separation, the roller 6.6a at the time when conveyance starts (Step 234) The exclusion operation is restarted again, and the ejected document advances from the conveyance path ■a to ■a. On the other hand, at the end of the operation, the document is on the glass surface 1111a, where it is temporarily stopped and transferred to the inverted SUB shown in Figs. 23 and 24. Wait until the process moves on and the parallel exclusion operation ends (Step 243)
, as soon as the reversal SUB process is completed, the original is transferred to the transport path I.
IIa~rV a -V a~Vla~vIla-■a
Then, it stops at a predetermined position on the platen glass 12 surface of the copying machine, and issues a copying operation start command at paper feeding completion SUB in FIG. 27.

Regarding the exclusion vessel operation, see 5 step 223 in Figure 21.
The waste is processed by the exclusion vessel SUB shown in . The document on the surface Ua of the platen glass 12 is ejected through the transport path I[[a by the exclusion SUB shown in FIG.
When the trailing edge of the document is detected by the sensor 35 (17) (Step 274), the exclusion operation is temporarily stopped and the processing operation for the primary document is started, and the paper enters the transport path Ia by the processing boat SUB in Fig. 22 and is separated. After performing this, the roller 6.6a starts the exclusion operation again at the time of starting the conveyance (Step 234), and the discharged document is discharged through the conveyance paths Va to VIa. On the other hand, the fed document is on the transport path! When the copying process reaches steps a to IIa and stops at a predetermined position on the surface of the platen glass 12, a copying operation start command is output at the paper feeding completion SUB in FIG. 27.

Furthermore, regarding the reversal operation, see 5 step 2 in Fig. 21.
The document processed by the reversing SUB shown in FIG.
(2) It advances from a to rla, and when it stops again at a predetermined position on the surface of the platen glass 12, a copying operation start command is output at sheet feeding completion SUB in FIG. 27.

Next, regarding the exclusion and counterfeeding operation, we will take the case of two originals as an example.
This will be explained with reference to the flowchart of the exclusion SUB shown in FIG. When two originals are placed on the document storage table l, the exclusion/reverse feeding mode is specified from the copying machine, and 5 (original feed signal) is set, the exclusion/extraction/reverse feeding operation starts at step 224 in Figure 21. do. The first manuscript is the second
Processing is carried out as described above according to the engineering ship SUB in Figure 2, and when the conveyance path 1a to Ila is reached and it stops at a predetermined position on the platen glass surface of the copying machine main body, a reversal permission command is set in step 239, and the sequence is started. Moving on to the inverted SUB shown in Figures 23 and 24.

In FIG. 23, table counter (TRNCN)=
0-? Therefore, proceed to step 5241, check the setting of the reversal permission command, start the reversal operation, reset the reversal permission command, set the reversing command, and turn on the signal SL for turning on the conveyance path switching solenoid. Start the interval timer (7M4) and proceed to the next 5tep as the table counter (TRNCN) -1, 5te
In p24j2, wait for (7M4)+7) to end, turn off the drive signal BK of the brake 92, turn on the drive signal CL of the clutch 85, and proceed to the next 5 steps as the table counter (TRNCN) ← 2. In 5tep 243, the paper is being ejected. It checks whether the command is set and waits for the end of the paper ejecting operation, but since the first document is being transported, it has been reset, and the signal MICCW is turned on and the belt 8 starts to be driven in reverse, and the paper is transported. Route l11a, proceed along TVa, start the JAM counter (JCN3) up to sensor S5, set the tape counter (TRNCN) to -3, and then proceed to the next 5t.
In step 244, the JAM counter [JCN3] monitors whether the sensor S5 detects the leading edge of the document until the JAM counter [JCN3] ends.
Proceed to RESET SUB. If the detection is normal, turn on the signal M3CCW, rotate the rollers 9 and 9a, and set the JAM counter [JCN
4] Start the table counter (TRNCN)
← Set to 4 and proceed to the next 5 step. In 5 step 245, monitor whether sensor S5 detects the trailing edge of the document until the JAM counter (JCN4) ends, and if it ends, the accumulated JAM
If normal, the signals M3CCW, MtCCW, CL, SL, and C3 are all turned off, the document transport is stopped on the transport path rVa, the interval timer (7M5) is started, and the table counter (TRNCN) ←5 In step 246, the interval timer (T M s
), turn on the signal M3CW, and turn on the roller 9.
Rotate ゜9a to advance the document to the conveyance path Va, start the JAM counter (JCNs) up to sensor 5s (18), set the table counter (TRNCN) to ←6, and proceed to the next 5 steps. At step 5247, sensor s6 is JAM counter (JCN5)
) will be monitored until it ends, and if it ends, it will be JA as a delayed jam.
Proceed to M RESET SUB. If normal, the original passes from rollers 10 and 10a through the conveyance path Vra to roller 11. Proceed in the lla direction, start the JAM counter (JCNe) until the document comes out of the sensor S6, set the table counter (TRNCN) to ←7, and proceed to the next 5 steps. (JCNs) will be monitored until the end, and once the JCNs are completed, JAM RESE
Proceed to T SUB. If normal, turn off the signal M3 CW, stop the document on the transport path ■a, start the interval timer (TMs), and start the table counter (TR
NCN) -8 and proceed to next 5 step, 5 step 249
Then, wait for the end of the interval timer (TMe), start driving the signals M3 CCW, CL, and SL as a heteon, advance the document to the conveyance path ■a by the roller 10° 10a, and move it up to the sensor S4 (7 ) Start the JAM counter (JCN7) and start the table counter (TRN).
Proceed to the next 5 steps as CN)-9. In the $24 diagram, in Step 251, it is monitored until the JAM timer (JCN7) ends to see if the sensor s4 detects the leading edge of the document, and if it ends, the JAM RESET is set as a delayed JAM.
Proceed to SUB, if normal, JA up to sensor S3
Start the M counter (JCNs), turn on the signal MICW, set the table counter (TRNCN) to ← 10, and proceed to the next 5 steps. ) until the end, and when it ends, proceed to JAM RESET SUB as a delayed JAM.
If it is normal, then JA until the document passes through sensor S3.
Start M timer (JCN9).

Table counter (TRNCN) ← Next 5te as 11
Proceed to p, 5tep 253 monitors whether the sensor S3 detects the trailing edge of the document until the JAM counter (JCNg) ends, and if it ends, the JAM is marked as a retained JAM.
Proceed to RESETSUB. If normal, the original is on roller 6.
6b and proceeds along the conveyance path 11a, which is dependent on the drive of the belt 8. At this point, the signal C3 is turned on,
Switch the clock input to the interrupt terminal INT from the transport lock to the belt clock, and as described above, do not change the correspondence between the clock and the transport distance, and set the transport distance to a predetermined position on the platen glass surface of the copier main body. Start the corresponding registration counter (RGCN2), set the table counter (TRNCN) ← 12, and proceed to the next 5 steps. At 5 step 254, register counter (RGCN2)
After waiting for the end of , an accurate stop position is obtained by setting the signals MICW OFF, CL OFF, and BK ON, and the reversing command is reset to return the table counter (TRNCN) to 0 to complete the reversing process.

In this state, the reverse feeding sequence is finished, and the process moves to the paper feeding completion SUB shown in Figure @27, where the (original paper feeding completion signal) is set as described above, and the copying machine starts copying the first original. start.

Next, a description will be given of the ejection operation for the first original and the refeeding operation for the second original after the copying of the first original is completed.

When the copying operation is completed, the copying machine sets the (original paper feed signal), and since the exclusion/rejection/reverse feeding mode is specified, it performs the process of step 224 in Figure 21, and starts with the exclusion operation for the first original. do. In the excluded SUB shown in FIG. 26, since the table counter (EJCN) is set to 0, the process in step 271 is performed.

At step 5271, the paper discharge permission command is sent to St in FIG.
e Since it is set in p234, proceed to the next step, reset the paper discharge permission command, reset the paper feed permission command 1 reversal permission command, prohibit the reversal operation of the engineering ship 9, set the paper discharge command, Signal SL is turned on and the document is ejected to transport path IIIa.
The interval timer (T Ma
) and table counter (EJCN)←1
Then, proceed to the next step. In step 272, wait for the end of the interval timer (TM4) and turn on the signal MIC.
The CW is turned on, the CL is turned on, the document discharge drive is started, and the JAM counter (JCN3
) and start the table counter (E J CN) ←
2, proceed to the next 5 step, and in 5 step 273, check whether the sensor S5 detects the leading edge of the document or not.
CN3) until the end, and when it ends, proceed to JAM RESETSUB as a delayed JAM. If normal, turn on the signal M3CCW to rotate the rollers 9 and 9a, advance the document to the conveyance path IVa, and set the sensor S5 to the document. Start the JAM counter (JCN4) until the exit, set the table counter (E J CN) ← 3, and proceed to the next 5 steps.
In step 274, it is monitored until the end of the JAM counter (JCN4) to see if the sensor S5 detects the trailing edge of the document, and when the end of the JAM counter (JCN4), the JAM RES is determined as a retained JAM.
Proceed to ETSUB, if normal, signal M3CCW y
, MI CCWt off, CL on, SL on, and CS off to stop the document on the transport path IVa.

At the same time, by setting a paper feed permission command, a command is issued to start the counter-feeding operation for the second document, the standby state of step 231 in FIG. Begin separation.

Furthermore, start the interval timer (TM5),
Table timer (E J CN) ← Next 5 steps as 4
Proceed to. At 5tep275, the interval timer (TM
After waiting for the completion of step 5), the system enters a standby 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 the conveyance path ffa to Va, and the sensor S
Start the JAM timer (JCN5) up to 6, set the table counter (EJCN) to -5, and proceed to the next 5 steps.In step 5276, monitor whether the sensor S6 detects the leading edge of the document until the end of the JAM timer (JCNs). Once finished, JAM RESET as a delayed JAM
Proceed to SUB.

If it is normal, the document is caught on the rollers 10 and 10a, advances toward the conveyance path Via, starts the jam counter (J CN 6) until the document comes out of the Senna S6, and sets the table counter (E J CN)←6. Proceed to the next 5 steps. In Step 277, monitor whether the sensor S6 detects the trailing edge of the document until the end of the JAM counter (JCN6), and when the end of the JAM counter (JCN6), the JAM RE is registered as a retained JAM.
Proceed to SET SUB. If normal, the original is in transport path V
Proceed through la and roller 11. lla, starts the post-discharge rotation timer (TMOUT), sets the table counter CEJCN)←7, and proceeds to the next 5 steps, 5 steps.
278 waits for the end of the rotation after paper ejection (TMOUT), turns off the signal M3CW, stops the paper ejection drive, resets the paper ejection command, and as described above, sets the table counter (EJCN).
←0LrStep The state returns to ep271.

On the other hand, the paper feeding process restarts the reversing operation since it is in the state of waiting for the reset of the paper discharge command in Step 243 of FIG. 23, and as described above, the paper feeding completion process is performed from Step 281 of FIG. Instructs the main body of the copying machine to copy the second original.

Next, the ejection operation for the second original is performed by setting the (original ejection signal) from the copying machine main body as described above, and the ejection operation is performed by the exclusion SUB shown in Fig. 26.
1 to 278, and in Step 278, since the (original discharge signal) has been set, the start command is reset, the (in-operation signal) is reset, and all operations are completed.

Next, jam processing will be explained. JAMRESET
The operation of SUB is shown in FIG. 28 at step 291.
Then, turn off all the loads and set the JAM middle finger command,
The signal JAM from the output boat 011 is turned on, and the jam lamp 24 is lit. Furthermore, the serial data (JAM signal) is set, and then in step 5292, it is checked whether each document detection sensor S1 to S6 and ES is detecting a document, and if even one is detected, proceed to the next step 5. JAM RESET The PJ author removes the original and turns off the original detection signals from all sensors, and proceeds to 5 step 293.Here, the operator determines whether the door should be opened or closed, and if this is done, the process proceeds to 5 step 294, where the JAM middle finger All commands are set, the signal JAM from the output port o11 is reset (JAM signal), all commands are reset, and all counter timers are reset to complete the JAM RESET process.

Next, document size detection processing will be explained.

5IZECK SUB will be explained with reference to Fig. 31.
The fed original is counted by the [original size counter] while the sensor S2 is detecting 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. Therefore, the data of the [original size counter] is compared with the data of predetermined original sizes from A3 to BS to determine the original size. Processing such as setting 1 to the (original size signal) of the serial data sent to the copying machine main body is performed, and after determining the size at the end of processing, the (original size counter) is cleared and the next feeding is performed. In preparation for detecting the original size that will be detected, the original size of each original is determined one by one. At this time again,
When a document whose size has been detected is subsequently reversed or ejected, a jam counter is set for each sensor. More accurate retention JA by
I am trying to perform M detection.

Next, the serial transfer method will be explained. Fig. 30 is a 70-chart for performing serial communication with the main unit described above, and in step 301, it is checked whether a request signal REQ, which is a serial communication request signal from the main unit, has been input, and if input is present, serial communication is started. do.

In step 302, microcomputer 1 sends data to the main unit.
Data storage register (S i
REG) of the above-mentioned 8-bit serial transmission data (F
Stores LDOI) (FLDO2) (FLDO3) according to the contents of -hfy (SOCN) (F), outputs the contents of the register (S i REG) to the So terminal, and sends an acknowledge signal ACK to notify the main unit of serial communication preparation completion.
Turn on. Here, serial communication between main body B and this device A is automatically performed using the COM 4.3 N method.
At step 303, a check is made until the serial 8-bit (7) communication is completed, and 8-bit data is exchanged. 5
At step 304, the acknowledge signal ACK is turned off when the serial communication ends, and the microcomputer 1 that has received the data from the main unit
The data from the St terminal of 20 is stored in the register (SiREG), and the contents are stored as the serial reception data 8 mentioned above.
'b it is stored in (FLDtL). Also, the contents of the counter (SOCN) mentioned above are incremented, and (S
If (SOCN) = 3, set (SOCN)←0 again and update the contents of (SOCN) sequentially for each serial communication to 5t.
The serial transmission data to be stored in the register (SfREG) of ep302 is sequentially (FLDOI) → (FLDO2) →
It is specified as (FLDO3)→(FI,DOI)φ...

Also, if there is no request signal REQ input at 5tep301, serial communication is not performed at 5tep305.5tep3
Proceed to 06,5 step 307 (FLDOl) (FLDO
2) Set/reset the data of (FLDO3) 5
It is tep.

In step 305, data (original detection signal) in (FLDO2) is set/reset depending on whether or not the entrance original sensor (ES) 20 detects an original. 5tep306
Then, set the data (door open signal) in (FLDO3) depending on whether the open/close switch (MS) 126 is detected.
Reset. Also, in 5tep307, the drive motor (M
l) The data (driving signal) in (FLDOI) is set/reset depending on whether or not 82 and (M3) 97 are turned on.

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 35 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 document exclusion and counter-feeding operation, Figure 38 shows the case of document exclusion and counter-feeding operation, and Figure 39 shows the case of document retraction operation. are shown respectively.

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

Furthermore, although the interrupt terminal of the microcomputer (CGO 1) is used as a counting means for counting by a program, it is also possible to use a hard logic circuit using a counter IC.

In addition, although the configuration is such that one clock is selected by the switching means and input to the interrupt terminal TT, the switching means is deleted and all clocks are put into the input board, so that the microcomputer program can be changed. This objective can also be achieved by switching and counting at .

Furthermore, although the clock signal is generated by driving the conveyance means, it may be generated by a pulley or the like that rotates as the document is conveyed.

〔effect〕

Since the sheet document conveying device according to the present invention has the above-described configuration, it has the advantage that the device is miniaturized, the sheet document is not damaged, and the sheet document is placed in a predetermined position with the same front and back sides as when stacked. It has the effect of being able to guide you.

[Brief explanation of the drawing]

Figure 1-1 is a cross-sectional view of a copying device consisting of a double-sided original circulating device, a double-sided copying machine, and a sorter, Figure 1-2 is a diagram showing a paper output tray, and Figure 2 is a diagram showing the drive system of the double-sided original circulating device. Rear sectional view, Figures 3 to 7, Figures 8-1, 8-2, and 9-
Figure 1. Figure 9-2, Figures 10-1 to 10-3, Figure 11,
Figures 12-1, 12-2, 13-1 to 13-
Figure 3 shows the state of the original or copy paper, Figure 14 shows the control circuit of the copying machine shown in Figure 1, Figure 15 shows the circuit configuration of the line receiver, and Figure 16 shows the line driver. 17 is a diagram for explaining the serial transfer method, FIG. 18 is a timing chart of each signal of serial data for each operation of the double-sided original circulation device and the copying machine main body, and FIG. 19- FIG. 30 is a control flowchart of the double-sided document circulating device, and FIGS. 31 to 39 are timing charts in 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, l is document placement table, 8 is belt, 13-20
is a sensor, 21 is a pulse motor, 22 is a partition arm,
80, 82° 97 is a motor, 85 is a clutch, 92 is a brake, 93, 103 is a clock disk, 95° 105 is a photoelectric sensor, 107 is a switching solenoid, 120 is a microcomputer

Claims (1)

[Claims] (1) A loading means for stacking sheet originals, a separation feeding means for separating and feeding the originals stacked on the loading means one by one starting from the bottom edge, and separating and feeding the sheet originals fed by the separation feeding means. a first sheet path that is reversed and guided from front to back; a conveying means that is continuous with the first sheet path and that discharges the sheet original in a direction opposite to the conveying direction after conveying the sheet original; and the conveying means a second sheet path that is continuous with the second sheet path and guides the sheet document by inverting it from front to back; a third sheet path that is continuous with the second sheet path and switches back the sheet document; and a fourth sheet path that is continuous with the second sheet path and switches back the sheet document; A sheet characterized by guiding a sheet original to a reading position without inverting the front and back sides, reading one side, then reversing the front and back to read multiple sides, and then reversing the front and back and returning the sheet original to the stacking means. Document transport device.