JPS61189566A - Parallel conveyance copying machine - Google Patents

Abstract

PURPOSE:To increase a copying speed while the processing speed of image formation is held constant by displaying an original setting direction on a display part when pages are copied continuously in parallel conveyance both- surface copying operation. CONSTITUTION:A 'parallel conveyance ready' display illuminates in an operation part only when sheets of transfer paper of copy sizes A4 and B5 are set on the 1st paper feeding device 33 lengthwise in a paper feed direction and transfer paper of the same size is set at the simple cassette side in the 2nd paper feeding device 34 in the same direction with the 1st paper feeding device 33. Namely, paper presence/absence detectors 1 and 2 in the 1st paper feeding device turn on (paper presence) and a size detector outputs A5 (or B5). Then, the 'parallel conveyance ready' display illuminates only when a paper presence/ absence detector 1 in the 2nd paper feeding device turns off (paper absence), a paper presence/ absence detector 2 turns on (paper presence), and a size detector outputs A3 (or B4).

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a copying machine having a function of conveying transfer sheets in parallel.

[Prior art]

Conventionally, in order to increase the copying speed of copy paper, techniques have been developed in the direction of increasing the process speed.

However, as process speeds have increased, copying machines have become larger and more complex, and have become so-called high-end machines with high costs.

By the way, some copying machines have a conveying section that has a wide belt or a roller spacing that is capable of horizontally feeding A-3 paper, which is the maximum size of normal paper.

〔the purpose〕

The present invention has been made based on this background, and an object of the present invention is to provide a copying machine that can increase the copying speed while keeping the image forming process speed constant by conveying transfer paper in parallel. With the goal.

Another object of the present invention is to eliminate errors in the setting direction of originals during page speed copying during double-sided copying in a parallel conveyance copying machine.

〔composition〕

In order to achieve the above-mentioned object, the present invention is characterized in that the document setting direction is displayed on a display unit during page continuous copying during parallel conveyance double-sided copying.

Hereinafter, a detailed explanation will be given based on one embodiment of the present invention.

First, an outline of a copying machine will be explained using an example of a copying machine shown in FIG.
1 and a copying machine main body 12.

The ADF device 11 consists of a transport section 13, a paper feed section 14/original setting section], 5, and a document ejecting section 16, and each time a document is manually set in the document setting section 15, the set document is removed. There is a mode in which the documents are automatically conveyed onto the contact glass 7], a mode in which multiple documents set in the document setting section 15 are automatically conveyed one by one onto the contact glass 17, and a mode in which the ADF device itself is used as a pressure plate. You can use it with the mode you want to use. In addition, this ADF device 1
It is also possible to place a book or the like directly on the contact glass 17 without using the contact glass 17.

The copying machine main body 12 has a contact glass 17 and a halogen
8 light) An exposure optical system consisting of an illumination unit 18 including a lamp 18a and a first mirror 18b and reciprocating in the direction of the arrow along the lower surface of the contact glass 17, second to fourth mirrors 19a to 19c, and a through lens 20; Photoreceptor (selenium photoconductor) drum 21, charger 22 arranged along its periphery, eraser (erase lamp) 23
, developing unit 24, pre-transfer charger (PTC) 25
, transfer charger 26, separation charger 27, separation claw 2
8. Pre-cleaning charger (FCC) 29, cleaning unit 30, static elimination lamp 31, double-sided tray 32, first tray 33, second tray 34, third tray 4
2. Paper feed roller units 35a to 35d, m transport section 36
, distro roller 37 , conveyor belt 38 , fixing section 39
, a reversing section 40, a copy receiver 41, and the like.

Note that a power supply unit, various drive motors, drive force transmission mechanisms, various sensors, a control unit, etc. are not illustrated.

The basic operation of this copying machine is as follows.

That is, first, the photosensitive drum 21 is rotated in the direction of the arrow in response to a copy command, etc., but the drum is rotated before rotation to prevent residual toner adhering to the drum and uneven potential on the drum from reaching the charger 22 and the developing unit 24. eraser 23, pre-transfer charger 25, transfer charger 26,
The separation charger 27, cleaning unit 30, static elimination lamp 31, etc. are driven.

The cleaning unit 30 operates under the condition that the copying machine is powered on, so that the drum surface potential after passing through the static elimination lamp 31 remains Ov even after a jam occurs.

Note that the leading edge of the latent image formed on the photoreceptor drum 21 is the portion after the position passing the cleaning device 30 .

When the photosensitive drum 21 is rotated to a fixed position by being driven by a main motor (not shown), the document set on the contact glass 17 is illuminated by an illumination unit consisting of a halogen lamp 18a and a first mirror 18b in synchronization with the rotation. (scanning system) 18, and the reflected light images are the first mirror 18b, the second mirror 19a, and the third mirror 19.
b. Spinning back to the photosensitive drum 21+ via the through lens 20 and the fourth mirror 19C! 1- After the photosensitive drum 21 is charged by the charger 22, unnecessary parts are irradiated with light by the eraser 23 to create an image frame suitable for the transfer paper or the projected image, and this image is A latent image is formed by the above-mentioned reflected light image that enters the frame via the exposure optical system.

At this time, it goes without saying that the rotational speed of the photosensitive drum 21 and the scanning speed of the illumination unit 1B are made to match in order to obtain an image (latent image) that is the same size as the original.

The electrostatic latent image on the photosensitive drum 21 is developed (visible) as a toner image by the developing unit 24, and the image density is adjusted by the potential applied by the developing unit 24 at this time.

First tray 33 or second tray 34 or third tray 42
The transfer paper inside is first transferred to the paper feed roller unit 35a or 35.
b or 35d, the paper is sent to a point where a paper detector (not shown) is activated.

Next, at the predetermined paper feeding timing, the paper feeding roller unit 3
5a or 35b, the transfer paper of the required size is sent through the vertical conveyance section 36 to the registration roller 37 that has been stopped in advance, and the registration roller is moved at the timing when the leading edge of the toner image on the photosensitive drum 21 and the leading edge of the transfer paper match. 37 is driven.

The transfer paper is transferred to the photosensitive drum 21 by the registration roller 37.
When the toner image on the photosensitive drum 21 is transferred to the transfer paper by the transfer charger 26, the toner image is transferred to the transfer paper.

Although the surface of the photoreceptor drum 21 is very smooth and the adhesion of the transfer paper is strong, the transfer paper is separated from the photoreceptor drum 21 by the action of the separation charger 27 and the separation claw 28, and then transferred to the fixing section by the conveyor belt 38. Sent to 39.

Then, the fixing section 39 applies heat and pressure to the toner to fuse and fix the image, and then the transfer paper on which the image is formed is discharged to the copy receiver 41 via the reversing section 40 .

Since a small amount of toner remains on the surface of the photoreceptor drum 21 after transfer, the pre-cleaning charger 29 is applied, the cleaning unit 30 cleans the surface with a brush and a blade, and the next charge removal lamp 31 removes the surface potential. Keep constant.

Note that for double-sided copying, after an image is formed on one side, it is stacked on the double-sided tray 32 with the image side facing up via the reversing unit 40, and then fed by the paper feeding roller 35C at a predetermined paper feeding timing. This is done by printing it on paper.

The sequence control of the copying process described above is performed by a control section, which will be described later, mainly based on pulses generated in synchronization with the rotation of the photoreceptor drum 21 or reference pulses for driving the photoreceptor drum 21.

Next, a paper feeding device capable of parallel conveyance in this embodiment will be explained.

First, an example will be described in which two paper feeding devices, the first tray 33 and the second tray 34, are used.

In the case of a normal copying operation, transfer sheets are sent out one by one from a tray selected from the first tray 33 and the second tray 34 with respect to the reference position A as shown in FIG.

However, in the case where a plurality of transfer papers, two in this embodiment, are sent out at the same time, it is necessary to send the transfer machines 50 and 51 in parallel with a gap δ as shown in FIG. for example,
The transfer paper 50 is fed from the first tray 33, and the transfer paper 51
Assuming that the paper is fed from the second tray 34, the set of transfer paper 50, 51 in the first tray 33 and the second tray 34 is as shown in FIG. In the same manner as above, set the transfer paper 50 using the reference position A as a reference. However, in the second tray 34, the transfer paper 51 is set using the reference position B as a reference.

As a method for setting the transfer paper 51 at the reference position B, there is a method using a simple cassette 52 shown in FIG. A partition plate 53 is erected on this simple cassette 52 so that when the simple cassette 52 is set on the second tray 34, the partition plate 53 is located at a reference position B.

Note that the second cassette 52 as described above can be set therein.
The tray 34 is equipped with a paper cassette 52, as well as a paper-presence detection section, a paper size detection section (not shown), etc., as shown in Figure @1, which are used during normal copying operations. Paper feed roller unit 5 used during
4, it is necessary to provide a paper presence/absence detection section, etc.

The simple cassette 52 shown in FIGS. 5 and 6 has holes 55.5 in left and right chambers formed with the partition plate 53 as a boundary.
6, these holes 55 and 56 are provided at positions corresponding to the paper presence/absence detecting section provided in the paper feeding device consisting of the second tray 34. Also, the second tray 34
A side guide 57 is provided to be movable in the direction of arrow C.
is in contact with the end surface of the transfer paper stored in the second tray 34 during normal copying operation, and is brought into contact with the end surface of the simple cassette 52 when the simple cassette 520 is set. The paper size detection when the simple cassette 52 is set is determined by the paper size detection by the side guide 57 and the out-of-paper signal from the paper presence/absence detection section corresponding to the hole 55. Also, corresponding to the hole g6, the paper presence/absence detection section detects the presence or absence of paper when the simple cassette 52 is set.

General paper size detection using the side guide 57 is performed using a configuration as shown in FIG. That is, the paper size is changed by grasping the stopper lever 58 of the side guide 57 and sliding it back and forth.

A shielding plate is screwed to the guide lever bracket 59, and by turning on and off the four photosensors 61 of the size detection board 60 on the tray bottom plate, the
Show seed size.

The stopper lever 58 presses down the side guide 57 due to the spring force between it and the side guide 57, so that the side guide 57 can be set at any desired position. For this reason, the shaft 57 is specially treated to increase its hardness and coefficient of friction, thereby preventing the stopper lever 58 from slipping.

Furthermore, to explain the first tray 33 as an example of determining a specific paper size using the configuration shown in FIGS. A pair of paper presence/absence detection devices 63 and 64 are provided in the forward direction of this side guide 57.

As an example, FIG. 10 shows the relationship between the paper presence/absence detection device 63.64 and the paper size for transfer paper in row A, and FIG. The relationship with paper size is shown. In FIG. 10, the broken line indicates A5, the dashed-dotted line indicates A4, the dashed-double line indicates A3, and the first
In Figure 1, the broken line is B6, the dashed line is B5, and the two points $l &
1 indicates B4 transfer paper.

In FIG. 10, A5. B4. When A3 is placed horizontally, each size signal is output according to the movement of the side guide 57. Therefore, when A4 paper is placed vertically, the size signal becomes A5, but the size and the horizontal and vertical directions can be determined in relation to the outputs of the paper presence/absence detection devices 63 and 64. The table below shows the relationship between specific signals and sizes for which similar determinations were made for the transfer paper in row B.

Next, an embodiment will be described in which parallel conveyance is possible using one paper feeding device.

That is, it is a paper feeding device using the third tray 42 shown in FIG.
This is the configuration shown in Figure (b). This third tray 42 is divided into two chambers with a partition 65 erected approximately in the center. Transfer paper is loaded in each chamber, and when set in the copying machine main body 12, the transfer paper standard are the reference positions A and B, respectively. In addition, each of the chambers is provided with an independent bottom plate 66a, 66b.
, and springs 67a and 67b.
7a and 67b press the bottom plates 65a and 66b upward. Further, when the third tray 42 is set in the copying machine main body 12, the paper feed rollers 35d and 6 provided on the main body 12
8 are arranged at positions corresponding to the respective transfer sheets, the bottom plates 66a and 66b are pressed by springs 67a and 67b according to the thickness (overall height) of each transfer sheet P, and parallel conveyance is possible. It becomes possible.

By the way, one of the problems when sending out multiple transfer papers at the same time is the problem of aligning the leading edges of each paper.
For example, when using the two paper feeders described above, the first
In the figure, two paper feeding devices, the first tray 33 and the second tray 34, are used, but the two sheets of transfer paper are transported by the conveyance roller 69.
They will match in that part. Therefore, the timing of feeding the paper from the first tray 33 is adjusted so that the leading edge of the transfer paper is aligned.
It is conceivable to shift the paper feeding timing of the second tray 34.

Further, in order to more accurately align the leading edge of the transfer paper, the conveyance roller 69 may be controlled in the same way as the registration roller 37 is controlled.

That is, the conveyance roller 69 is the first. Second tray 33.
It is stopped until the paper fed from 34 arrives,
Rotation is started at a predetermined timing when the paper is completely gripped by the conveying roller 69.

By doing this, the leading edges of the two sheets of paper are conveyed almost in alignment.

Using this method, more accurate tip alignment can be achieved than in the embodiments described above. On the other hand, it can be said that even if the accuracy of the paper feeding timing adjustment is made more rough, it is possible to easily align the leading edge.

Furthermore, the joining point of the two sheets of transfer paper may be the registration roller 37. In other words, a path is taken such that the two sheets of transfer paper meet for the first time at the registration roller 37.

That is, in FIG. 1, parallel conveyance may be performed using two paper feeding devices: the paper feeding device of the third tray 42 and the paper feeding device of the first tray 33 or the second tray 34.

It is also conceivable to set the rotation timing of the conveyance roller 69 to the timing when the leading edge of the paper coincides with each other, and in this case, the registration roller 37 will function as a normal conveyance roller.

On the other hand, in the case of parallel conveyance using only the third tray 42, the two paper feed rollers 35d and 68 are operated at the same timing, and the registration rollers 37 are set to further align the registration. You can align the leading edges of multiple transfer papers.

Another problem when a plurality of transfer machines are conveyed in parallel is that if the transfer sheets overlap each other, it causes skew, jam, and wrinkles.

However, it is almost impossible to convey two sheets of transfer paper so that the gap between them is zero and they do not overlap.

Therefore, as shown in FIG. 3, it is preferable to set the reference positions A5 and B so that there is a gap δ from the beginning.

In this case, the image on the transfer paper will be shifted by 6 minutes from the original, but if δ is made small enough, this is not a big problem. Also, when making copies of books, etc., the binding margin is This is the part where there is usually no image.

When copying two originals by conveying them in parallel, it is also possible to shift them by 6 on the platen.

Also, if you really want to reduce the deviation from the original,
The transfer paper reference for normal copying, position A in FIG. 13, and the transfer paper reference for parallel copying, position A' in FIG. 14, may be shifted by a minute amount (less than δ).

That is, if position A in FIG. 13 and position A' in FIG. 14 are the same, transfer paper N has the same reference as the original, but transfer paper M is shifted by δ. However, for example, if position A' in FIG. 14 is shifted from A by δ/2, then the transfer sheets N and M will each be shifted by δ/2 from the original.

Next, the transfer paper will be explained based on FIGS. 15 to 18.

Figure 15 shows the state in which the transfer paper is sent to the paper discharge section X.
When the transfer paper P that has passed through the fixing section (not shown) is fed into the reversing section Y, it is guided between the main reversing roller 72 and the rear reversing roller 73 by the upper switching claws 70b and 71b of the reversing switching guide plate 70, 71, and is guided by the branching claws. The paper is sent to the paper discharge section X by 74.

FIG. 16 shows the operating state of the reversal switching guide plate 70, 71 and the branching claw 74, and FIG. 17 shows the state where the transfer paper P is reversed and sent to the double-sided paper feed section Z.

The reversal switching guide plate 71 is constructed substantially integrally with the upper switching claw 71b and the lower switching claw Via, and is normally urged by a spring 75 to the state shown in FIG.

In FIG. 16, when the solenoid 76 is sucked in the direction of the arrow, the lower switching claw 71b is positioned on the transfer paper conveyance path, and the transfer paper is guided to the reversing section Y. At the same time, when the switching solenoid 77 of the branch claw 74 is sucked in the direction of the arrow, the lever 7
A branch claw 74 operates around a shaft 78 through a shaft 9, and the transfer paper fed from the opposite shaft section Y is guided to a double-sided paper feeding section Z.

Here, the reversal switching guide plates 70 and 71 and the branching claw 74 are divided into two in the axial direction, and are configured to be able to operate independently with respect to the two sheets of transfer paper being conveyed.

The reversal switching guide plate 71 is integral with the rotating shaft 80 and is the 16th
As shown in the figure, the solenoid 76 and spring 757 can be moved to two positions, and similarly, the reversal switching guide plate 70 is integrated with the rotary tube 81, and the solenoid and spring (not shown) are attached to the side plate (back) where the solenoid 76 and spring 75 are attached. (attached to the opposite side plate (front side)), the reversal switching guide plates 70 and 71 can each be moved independently.

Similarly, the branch claw 74 can be moved independently to the front side and the back side by the branch claw rotating shaft 78 and the tube 82.

In addition, 83, 84, 85, 86, 87 in the figure are guide plates, 8
8 is a front reversing roller, and 89 is a return spring for the branch claw 74.

FIG. 18 shows a state in which A4 and B5 sheets are fed in parallel.

When 85 or A4 size transfer paper is sent in parallel, the front switching claw 70 is placed inside the B5 width, and the back switching claw 71 is placed inside the A4 size parallel back side transfer paper A4' width. Since the sheets are arranged in parallel, the sheets fed in parallel by the operation of the switching claws can be sent separately to the paper discharge section and the reversing section. In addition, 6 in Figure 18 indicates a predetermined gap between sheets conveyed in parallel, and from 0 or more, one of the two sheets of transfer paper conveyed in parallel is sent to the paper ejection section, and the other is reversed. This is possible by controlling the respective switching solenoids 76 and 77 to the section Y duplex paper feed section 2.

Some transfer paper is conveyed to a duplex tray, but the duplex tray has two paper feed rollers for parallel conveyance, similar to the paper feed section, and each of them is driven and controlled independently.

Further, in parallel conveyance in which a plurality of copies are simultaneously made as in the present invention, there is also a problem in paper ejection. This method has the advantage that copies can be made in a short time by using it when multiple sheets of originals are the same or when the order of copying is not important.

However, each set of manuscripts is different and unique.
If you want to arrange them in that order, this cannot be done as is, and the following can be considered as a means to solve this problem.

A) Change the ejection timing of each copy.

■＞Change the transport route.

(Including putting it in a double-sided tray) 2) Change the conveyance speed.

B) Integrate the output copies.

1) Wandering (11-Swing the ray.

2) Change the roller diameter of the Jingi conveyance roller in a certain direction to align the width of the copy when it is ejected.

Further, when double-sided page continuous copying of a book manuscript or the like is performed, copies are alternately ejected to the front side and the back side for each copy, as will be explained later (control section). In this case as well, the above method is effective because it enables page alignment.

I will explain based on this.

In the embodiment of the paper discharge section 140 shown in FIGS. 19 to 23, a swing output gear 91 is fixed to the lower part of the paper discharge tray +90, and the swing output gear 91 is driven to rotate by a reverse smoke 92. The input gear 93 is brought into mesh. 94 is Accuride.

With such a configuration, the pre-transfer paper P, which is conveyed in parallel,
and the post-transfer paper Pt are superimposed on the paper ejection tray 90 using constants determined by the paper ejection timing, the transfer paper size, or the outer shape 95 of the copying machine main body, etc.
The paper discharge tray 90 can be moved a certain distance (in the direction of arrow W). Therefore, as shown in Figure 22.23, the front transfer paper P
By positioning the paper ejection tray 90 at the paper ejection portion of , and then moving the paper ejection tray 90 to the paper ejection portion of the post-transfer paper P, the transfer sheets can be stacked one after another.

In the above configuration, the swinging force is transmitted using gears 91 and 93, but timing belts, link mechanisms, etc. can also be used.
debt.

Next, in another embodiment of the paper discharge section 140 shown in FIGS. 24 and 25, a transfer paper stacking mechanism is arranged in the conveyance path between the branch section 100 and the paper discharge tray 101.

That is, the guide plate 102a forms a conveyance path.

An auxiliary guide plate 105 that is rotatably driven around a shaft 104 by a solenoid 103 is disposed in the middle of the guide plate 102b. Further, a paper ejection drive roller group 106 and a paper ejection driven roller group 107 are provided on the paper ejection tray 101 side of the guide plates 102a and 102b, and the roller groups 106 and 107 are guided upward by the auxiliary guide plate 105 above the roller groups 106 and 107. Auxiliary guides 108a and 108b are formed to guide the transfer paper, and a second ejection drive roller group 109 and a second ejection driven roller group 110 are provided on the paper ejection tray 101 side of the auxiliary guides 1Q9a and 108b. In the second ejecting driven roller group 109, in this embodiment, the diameter of each roller becomes smaller from the back (R side) to the front (F side). The diameter of each roller increases as it gets closer to you. Also 111.11
2 is a spring that holds the auxiliary guide plate 105 in a fixed position.

Therefore, the front transfer paper PI is the lower paper ejection drive roller group 1.
06 and a sheet discharge driven roller group 107, and the rear transfer paper P2 is guided to auxiliary guides 108a and 108b by an auxiliary guide plate 105 which is rotated counterclockwise by a solenoid 103. Then transfer paper P
, is transported tilted in the direction of the transfer paper P1 due to changes in the acting force caused by changes in the roller diameters of the second paper ejection drive roller group 109 and the second ejection driven roller group 110, and the second
As shown in FIG. 6, the transfer paper P is discharged so as to be diagonally overlaid on top of P.

However, since the transfer papers P+ and Pt are stacked in the same order, there is no particular problem.

Also, by adjusting the roller diameters of the second ejecting driving roller group 109 and the second ejecting driven roller group 110 appropriately, as shown in FIG. 27, one transfer sheet P is ejected first. The paper output tray 101 is placed at an angle of 90 degrees with respect to the paper P1.
It is also possible to have it stocked.

Further, as in the sheet discharge section 140 shown in FIG.
Discharge drive roller group 109 and second discharge driven roller group 110
is made to have the same width as the paper ejection drive roller group 106 and the paper ejection driven roller 107, and the diameter of each roller of the second ejection drive roller group 109 is gradually changed from approximately the center toward the back and front. By making the diameter of each roller of the second wandering driven roller group 110 gradually smaller, if necessary, the transfer paper P on the front side can be made similar to the transfer paper P2 on the back side. Auxiliary guide Io8a on the auxiliary guide plate 105
, 108b, making it possible to turn at right angles to the direction of travel. As a result, as shown in FIG.
1 and P8 are ejected.

Further, the embodiment of the paper ejection unit 140 shown in FIGS. 30 and 31 is constructed focusing on the paper ejection drive roller 120 and the paper ejection driven roller 121, and the paper ejection drive roller on the front side) The roller diameter d is made larger, and the roller diameter d of the rear paper ejection roller drive roller is slightly changed from the front d to the rear d and l, so that d<dl+I (R>1). d as the roller diameter of the paper ejection drive roller 120.
E<dR+.

<d, and the diameter of each roller of the paper discharge driven roller 121 was determined in accordance with this paper discharge drive roller 120.

Therefore, the transfer paper on the front side is ejected quickly, and the transfer paper on the back side is delayed from the timing of ejection of the transfer paper on the front side, and due to the change in the roller diameter d8, the transfer paper on the back side is transported somewhat in the direction of the transfer paper on the front side. , it is ejected partially overlapping the transfer paper in the foreground.

Next, FIGS. 32(a) to 32(d) show the case of using continuous page copying and double-sided copying, that is, the case of copying books using the functions of parallel conveyance and double-sided copying. Manuscript 1
This will be explained with reference to an explanatory diagram showing the relationship between the transfer paper 30 and the transfer paper 131. In this example, the transfer paper 131 is produced by changing the direction of the transfer using the auxiliary guide plate 105 and the auxiliary guides 108a and 108b described above, and ejecting the transfer paper so that it is overlapped on the paper ejection tray. do. Also the 32nd
Figures (a), (b), and (c) show an example where the manuscript 130 has an odd number of pages and the last page is page 5, and Figure 32 (a)
) and (d) show an example in which the manuscript 130 has an even number of pages, and the last page is 4 pages. In the figure, the numbers on the manuscript 130 and the transfer paper 131 indicate page numbers, and when the top part is the front side, it is indicated by a solid line, and when the top part is the back side, it is indicated by a broken line, and "front" is indicated. indicates the front end of the transfer paper 131. Further, in the figure, the state of the document 130 on the contact glass 132 is shown on the vertical side of (A), and (B)
The state of the transfer paper 131 in the copy state is shown on the vertical side, and (
The vertical side of (c) explains the state of the transfer paper 131 at the branching part, and the vertical side of (d) explains the state of the transfer paper 131 in the double-sided tray.
], and (e) shows the state of the transfer paper 131 in the paper discharge tray. Two points 1mM transfer paper 1
31 shows the state before the direction change.

First, in FIG. 26(a), the contact glass 13
2, a book manuscript 130 is placed in a double-page spread state and with the manuscript 130 facing downward. Then, by the parallel conveyance described above, the first. Second. Third tray 33
, 34. Two transfer sheets 131a, 1 from either of 42
31b is fed and subjected to a known transfer operation. and 1
The transfer paper 131a on which the first stitch has been copied is ejected as is to the paper output tray, and the transfer paper 131b on which the second stitch has been copied is transferred.
is sent to the branching section 100 and sent to the double-sided tray 32 so as to be transferred to the back side.

After that, as shown in FIG. 26(b), the contact glass 13
2, with the front edge reversed from the state shown in FIG. place Then, new transfer paper 1 is transferred by parallel conveyance of the transfer paper.
31C, and the transfer paper 13 sent from the double-sided tray 32
1b is subjected to the transfer operation, and the transfer paper 13 is copied on both sides.
1b is output as is to the output tray, while 4
The transfer paper 131C on which the pages have been copied is sent to the branching section 100 and then to the double-sided tray 32.

Next, as shown in FIG. 26(c), the contact glass 132 is
With the front end at the top similar to the state shown in FIG. 26(a), the final page of only one side, in this case, the original m+3o of page 5, is Rff'd. Then, five pages are copied onto the back side of the transfer paper 131c fed from the duplex tray, and the paper is ejected as is to the paper ejection tray.

Also, FIG. 26(d) shows a case where the last page is page 4, and unlike FIG. 26(b), there is no need to send the transfer paper 131C to the double-sided tray, and it is turned over to the east at the branching part 100. The paper is then ejected to the ejection tray.

The operations shown in FIGS. 26(a) to 26(d) described above are comprehensively controlled by a training section, which will be described later. The transfer sheets 131 discharged to the flexible discharge tray are discharged in an overlapping state as described above, which is advantageous during bookbinding.

The flowchart in Fig. 33 shows that transfer paper with a copy size of A4.85 is set in the first paper feeder in the longitudinal direction with respect to the paper feed direction, and paper is set in the cylinder of the second paper feeder. Only when the machine is in use, the “parallel transport” possible display lights up in the operation unit. That is, in the first paper feeding device, paper presence/absence detection 1.
2 is ON (Paper Education), and the size detection outputs A5 (or B6).

In the second paper feeder, paper presence/absence detection 1 OFF (paper fish)
, the paper presence/absence detection 2 is ON (GIF), and the parallel conveyance display lights up only when the size detection is outputting A3 (or B4).

The flowchart in Fig. 34 shows differences in copy mode selection depending on whether the "1 parallel conveyance display" in the operation section is lit, after the "parallel conveyance" key is pressed, and whether or not the "original" key is manually operated. The copy size is A3.B than the size.
Only at the time of 4, "Parallel conveyance 1" is displayed on the display.

Figures 35 and 36 show the parallel conveyance both sides selected, respectively.
This is a flowchart showing a copying operation with and without manual input of the original key.The original key is effective when the front and rear originals are different in copying operation, and the copying mode of each original can be set manually using this key. Also, fAeQ+7-1-) WWmfal
-p+%l-%-y-1 1-h+wl- This is a key for ejecting the transfer paper fed from the paper feeding device and the duplex tray to the paper ejection tray, and is effective when copying the final original.

The timing chart in FIG. 37 shows the paper feeding timing without manual input of the original key during parallel conveyance double-sided copying.
Ejects the one-page transfer paper to the duplex tray. Next, when copying the second sheet of the original, the 3-page, 1-time transfer paper (M is 2-page, 1-time transfer) is ejected to the paper output tray, and the 4-page, 1-time transfer paper is ejected to the duplex tray. After that, repeat this, and after pressing the LAST key manually, the paper is fed from the paper feeder, the N+2 page of transfer paper is fed from the duplex tray, and the N+1 page of transfer paper (the back side is transferred N times) is delivered to the output tray. eject the paper to

FIG. 38 shows a plan view of the operating section 200. Next, the keys and indications on the drawings will be explained with reference numerals shown in the drawings in parentheses.

0 to 9 (201) Copy number set, original number set, zoom magnification set C (202) Mode clear key 5 (20
3) Copy operation interruption key zoom (206)
Arbitrary magnification selection key on both sides (208) Double-sided copy key combination (209) Copy key inversion on the same copy side (2
10) Paper ejection side selection key Print key (211)
Copy start key Parallel transport (212) Parallel transport selection key Parallel transport display (213) Parallel transport possible display element display section (214>
Display original for mode and user operation (215) Copy mode selection key for front and back originals Original size key (216) Original size input key - LAST
(217) Original last page confirmation key FIG. The above-mentioned operating section 200 is also connected to the main control section 300. The main control unit 300 is connected to the driver unit 305 and the load system 3 via the 0 port 304.
It is connected to 06.

Finally, we will discuss continuous page copying during double-sided copying in a parallel conveyance copying machine.

Continuous copying of double-sided pages by a parallel conveyance copying machine requires a minimum of 2N copying operations when copying 2N pages of an N original document on both sides onto 1/2 size transfer paper using a normal copying machine.
In the present invention, the copying operation is completed after N times of copying. However, due to the parallel conveyance system, it is necessary to set the originals in opposite directions each time the originals are set. Therefore, each time a copying operation is completed, the original set is displayed on the display unit.

〔effect〕

The present invention provides a parallel conveyance type copying machine configured as described above, which is compatible with various copying modes, improves copying work efficiency, and allows confirmation of document setting direction during continuous page copying during double-sided copying. It is possible.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic diagram of the entire copying machine, FIG. 2 is a diagram illustrating the size of transfer paper, and FIG. 3 is a plan view showing the state of transfer paper being conveyed in parallel. , FIG. 4 is a plan view illustrating the positional relationship between the transfer paper and the tray that are conveyed in parallel, and FIG. 5 is a perspective view showing a simple cassette for parallel conveyance.
FIG. 6 is a perspective view showing the relationship between the simple cassette and the tray shown in FIG. 5, FIG. 7 is a schematic explanatory view of the configuration of the side guide, FIG. 9 is a sectional view of FIG. 8, and FIG. 10 is a sectional view of FIG. Fig. 11 is a diagram showing the relationship between the presence detection device and the paper size, Fig. 12 (a) is a perspective view showing the third tray, Fig. 12 (b) is a sectional view of the third tray, and Fig. 13 Figure, 14th
The figure is a diagram explaining the positional reference in transporting the transfer paper.
5, 16, and 17 are partially sectional front views showing the operating state of the branching part, FIG. 18 is a side view illustrating the relationship between the switching claw and each size of transfer paper, and FIGS. Fig. 23 shows the first embodiment of the paper discharge tray in alignment a side, Fig. 19 is a plan view, Fig. 20 is a front view, Fig. 21 is a side view, and Fig. 22 is a side view.
23 are explanatory plan views showing the operating state, and FIGS. 24 to 27 show a second embodiment of the alignment mechanism.
Figure 4 is a front view, Figure 25 is a side view showing the roller group, and Figure 2 is a front view.
6 and 27 are diagrams showing the transfer paper discharge state, FIG. 28 is a side view of the roller group of the third embodiment of the alignment mechanism, and FIG. 29 is a diagram showing the transfer paper discharge state. Fig. 30 is a front view showing the fourth embodiment of the alignment mechanism, and Fig. 31 is a front view showing the fourth embodiment of the alignment mechanism.
FIG. 32(a) is a side view showing the roller group of the embodiment. Fig. 32(b), Fig. 32(C), and Fig. 32(d) are diagrams explaining the operational relationship between the original and transfer paper when copying a book, and Fig. 33 is when displaying parallel conveyance. FIG. 34 is a flowchart showing a state in which parallel conveyance is disabled. FIGS. 35 and 36 are flowcharts showing the transfer operation when the document key is manually operated. FIG. 37 is an operation timing chart of the paper feeding device. Figure 38 is a plan view of the operating section, Figure 39
The figure is a block diagram of the control section. 32.33.34.42...Paper feed section, 100...
・Branch section, 140...Paper discharge section, 300, 301°3
02.304...Control unit Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 9 Fig. 1O Fig. 1/Fig. 15 Fig. 16 Fig. 19 Fig. 20 Fig. 21 Figure 22 Figure 23 Figure 24 Figure 26 Figure 27 Figure 29 Figure 30 Figure 31 attached ＆ School brain change school Figure 34 Figure 37

Claims (1)

[Claims] What is claimed is: 1. A parallel conveyance type copying machine capable of conveying and copying transfer sheets in parallel, and characterized in that a display section displays the document setting direction during continuous page copying during double-sided copying.