JPS6011835A - Copying machine - Google Patents

Abstract

PURPOSE:To make a paper discharging device, intermediate paper feeding device, etc. unnecessary by providing a partition plate on the upper part of a paper feeding plate or a peper feeding cassette, and classifying an unprocessed sheet- like body and a processed sheet-like body. CONSTITUTION:A sheet original automatic carrying device 1 is provided with a paper feeding cassette 2, paper feeding roller 3 for feeding a sheet original in this cassette 2 by one sheet each, and an endless belt 5 provided so as to be rotatable and movable, on the upper part of an original platen 4 consisting of a transmission glass plate. Also, the first sheet carrying device 6 for reversing a sheet original and feeding it again to the original platen 4 is provided on the left of this belt 5, and the second sheet carrying device 7 for carrying the sheet original fed out of this belt 5 to the paper feeding cassette 2 is provided on the right of the endless belt 5.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for controlling the transfer of a sheet, and more particularly to a method for controlling the transfer of a document, a transfer sheet, a recording sheet, etc. to a sheet 1 in a copying machine or the like.

Conventionally, sheets are fed from one container, fed into a processing device, and once processed, the sheets 1 to 1 are fed into the same processing device again, as follows: was considered. One is to send the sheet-like object from the paper feed tray to the processing device, and the processed sheet-like object is discharged and stacked on the paper output tray. After all the sheet-like materials have been discharged, the sheet on the paper output tray is In this method, the paper is transferred to the paper feed tray and fed again.The other method is to transfer the paper from the paper feed tray and process it in the processing device, and then transfer it to the paper feed tray, which also serves as an ejector. This method involves discharging the sheet-like material onto a paper tray, and then feeding the sheet-like material again from the paper delivery tray. In the former case, it is necessary to transfer the sheet-like object on the paper discharge tray to the paper feed tray, which is a laborious task. In addition, both require a paper output tray separate from the paper feed tray, and the latter in particular requires a separate paper feed means such as a paper feed roller, which is very expensive and takes up a lot of space. I also needed something bigger. Therefore, the present invention solves the above-mentioned drawbacks by feeding sheet-like materials one by one toward a processing device from a container containing a predetermined number of sheet-like materials, and placing a partition plate on top of the stored sheet-like materials. The sheet-shaped bodies processed by the processing device are returned to the container and stacked on the partition plate, and the sheet-shaped bodies on the partition plate are loaded into the container according to a preset number of times. It was designed so that the paper could be fed again.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, and reference numeral 1 designates an automatic sheet document conveying device. The sheet 1 to the automatic document feeder 1 are rotated to the upper part of a paper feed cassette 2, a paper feed roller 3 that feeds the sheet originals in the paper cassette 2 one by one, and a document mounting table 4 made of a transparent glass plate. An endless belt 5 is provided, and on the left side of the endless belt 5 there is a first sheet conveying device 6 that inverts the sheet original and sends it out again toward the original table 4, and on the right side of the endless belt 6. is composed of a second sheet conveying device 7 that conveys the sheet document sent out from the endless belt 5 to the paper feed cassette 2.

Inside the paper feed cellar l-2, double-sided sheet originals S are stacked and housed in page order with the first page facing upward. An opening is formed at the bottom end of this paper feed cassette, and a paper feed roller 3 is provided corresponding to this opening to feed sheet documents S one by one from below. The fed sheet original S is fed into a nip formed by the endless belt 5 and the original placing table 4.

The endless belt 5 is adjusted to start rotating at the same time as the paper feed roller 3 starts rotating, or when it detects that a document is fed from the paper feed cassette 2 to the sheet 1. At first, the endless bells 1 to 5 rotate at a constant speed in the direction of the solid arrow as shown in the figure.

This endless belt 5 has two rollers 5a and 5b.
The interlock is composed of a plurality of belt-shaped belts that are rotated, and stoppers 5c and 5d are arranged between the belts, and the stopper 50 is in contact with the document mounting table 4.
It engages with the leading edge of the sheet original S to stop its movement.

On the other hand, the stopper 5d is lifted and is in a position where it does not interfere with the movement of the sheet document.

The rotation of the endless belt 5 stops when the sheet document S engages with the stopper 50, and then the exposure operation starts. The exposure device 8 has a first reflecting mirror 9 and a second reflecting mirror 10 that move parallel to the original platen 4 at a speed ratio of 1:1/2.
, an in-mirror lens 11, a third reflecting mirror 12, etc. The first and second reflecting mirrors 9 and 10 move in the direction of the arrow to expose the sheet original S on the original placing table 4, move forward to positions 9' and 10'', respectively, and then move back to the initial position. The photoreceptor 13 is moving at a speed of ■ in the direction of the arrow, and electrostatic latent images corresponding to the sheets 1 to S are formed on its surface, and after this is visualized, it is transferred to the transfer paper. The exposed sheet original S is sent to the first sheet conveyance device by the endless belt that is rotated again.The sheet conveyance device 6 reverses the sheet L-document S and places the original again. It is configured to be conveyed toward the placing table 4, and has a pair of paper feed rollers 6a and 6b.When the sheet document reaches the paper feed rollers 6a and 6b, its conveyance is temporarily stopped, and the next sheet document is transported. When the endless belt 5 starts rotating in the direction of the dotted arrow in the figure in preparation for exposure,
Conveyance of sheet 1 to document S is restarted. At this time, the stopper 50 is in the inactive position, and the stopper 5d is in the active position to stop the movement of the sheet document S. The sheet original S is turned with its second side facing the original placing table and exposed to the exposure device 8.
Exposure scanning is performed in the same way. The image corresponding to the second surface of the sheet document S formed on the photoreceptor 13 is transferred to the back surface of the same transfer paper on which the transfer was previously performed. In this way, double-sided copying of the double-sided sheet document S onto both the front and back sides of the transfer paper is completed.

On the other hand, the document S to the sheet 1, which has been completely exposed, is sent to the conveying device 7 to the second sheet 1 by the endless bell 1, which has started rotating again. This second sheet 1-transport device 7 has transport bells 1 to 78 that transport the sheet original S upward.
and a plurality of rollers 7b. The sheet document S is reversed once by the sheet conveyance device 7 and returned to the paper feed cassette 2 again.

By the way, a partition plate 14 is provided at the rear end portion of the paper feed force cellar l-2.
is installed. This partition plate is located above the temporary barge document S stored in the paper feed cassette 1 to 2, and is used to handle the sheets 1 to S from the second sheet conveyance device 7.
are separated from these unexposed sheet originals so that they are not mixed together.

Then, the remaining double-sided sheet originals S are stacked in page order on the partition plate 14 with the first page facing upward through the same process.

When the last sheet original S is sent out from the paper feed cassette 2 and it is confirmed that no sheet original S exists under the partition plate 14, the copying process of the predetermined cycle is completed.

Next, a case will be described in which a plurality of copies are obtained from a single sheet original. If the double-sided copying machine is not equipped with a sorter device, by repeating the above copying cycle a predetermined number of times, copies arranged page by page in the same order as the number of repetitions will be produced. That is, when it is detected that there is no sheet H document S under the partition plate 14, when the preset counter (not shown) receives a command to beat, the partition plate 14 is retracted from above the paper feed cassette 2. , the group of sheet documents S stacked thereon is completely accommodated in the paper feed cassette 2 in preparation for the next paper feed. By repeating this operation, a plurality of double-sided copies can be obtained.

On the other hand, when a sorter device is installed or when it is desired to circulate the sheet original S only once, when the sheet original S is placed on the original placing table 4, the exposure device 8 rotates the sheet original S by the number of repetitions. To complete exposure of the same page at one time. With this method, sheets 1 to original S will not be fed from paper cassette 2 many times, so
6K (1) and the chance of damage is also reduced.However, if there is no sorter device, sorting is required when binding after copying is completed.

Next, when performing double-sided copying or single-sided copying from a book original such as a book, rotate an appropriate part so that the endless belt 5, which is a part of the automatic document feeder 1, is retracted from the original table 4. It is provided so as to be rotatable around the center to enable copying of book manuscripts.

FIG. 2 shows another embodiment of the invention.

FIG. 2 is a partial configuration diagram of a double-sided copying apparatus that has an exposure device that exclusively performs exposure from a sheet original, and in particular also has a function that allows double-sided copying from a single-sided sheet original.

In FIG. 2, there is a sheet document S in the paper feed cassette 15.
are stored in page order with the first page facing upward. The sheet originals S are fed one by one by a feeding roller 16 starting from the lowest one. The fed sheet original S passes through the elongated exposure slit 18 via conveyance rollers 17.17. A conveyor belt 19 rotates above the exposure slit 18, and conveys the sheet original S and brings it into close contact with the exposure slit]8.

The sheet original S is exposed to light by exposure lamps 20a and 20b, and a light image thereof is projected onto a photoreceptor by an exposure optical system (not shown). The sheet original S that has been exposed is transported to one place by a sheet conveying belt 21 and a plurality of conveying rollers 22.
After the paper is reversed, the paper is loaded onto the paper feed cassette 15 with the exposed side facing upward. By the way, a partition plate 23 is attached to the tip of the paper feed cassette 15 to distinguish between the exposed sheet I/original S and the unexposed sheet original S.

When the copying of one side of the sheet original f19iS in the paper feed cassette 15 is completed in this way, a document detection device consisting of a lamp 24 and a light receiving element 25 detects the presence or absence of the sheet document S existing under the partition plate 23. Detects that it is not there. The back side of the partition plate 23 is colored in a color different from that of the sheet original S, or is made into a reflective surface so that the presence or absence of the partition plate 23 is detected based on the difference in the amount of light reflected from the sheet 1 to the original S.

In the case of a single-sided sheet original, double-sided copying is completed by this one feeding. On the other hand, in the case of a double-sided sheet original, the partition plate 23 is retracted from above the paper feed cassette 15, the sheet original on the partition plate 23 is completely accommodated in the paper feed cassette again, and the back side of the sheet original is exposed. Paper is fed to perform this. This completes double-sided copying from the double-sided sheet original. At this time, the double-sided sheet originals are stacked on the paper feed cassette 15 in page order with the first page facing upward. When repeating, the above-described copying process may be repeated the number of times.

Next, control of each of the above-mentioned devices will be briefly explained. First, the desired number of copies to be made from one sheet original is input into the preset counter 26. The precera 1 counter 26 and the light receiving element 25 are connected to an arithmetic control circuit 27, and the three clutches CL are connected to the arithmetic control circuit 27.
+, CI, 2. A repetition signal is sent to each CL3. The conveyance bell 1-19 is connected to a drive device 28 via a clutch CL+, the paper feed roller ]6 to a clutch CL2, and the partition plate 23 to a drive device 28 via a clutch C[, 3]. Clutch C and C1, 2 are paper feed force rollers 1-15
It operates as many times as the number of Sheets 1-Documents S stored in the
At the same time, the light-receiving element 25 detects that the sheet document S is missing under the partition plate 23, and the arithmetic control circuit 2
7 and actuates the clutches C1 and q to retract the partition plate 23 from above the paper feed cassette 15. Thereafter, the number of signals from the light receiving element is compared with the pre-mono 1-counter 26, and when a predetermined copy is obtained, the copying operation is automatically stopped. It goes without saying that when making n double-sided copies from n double-sided sheet originals, the copying operation will stop when the number of signals input from the light receiving element to the arithmetic control circuit is 20. do not have.

FIGS. 3 and 4 show yet another embodiment of the invention. A partition plate of a paper feed table having a partition plate will be explained using FIG. 3 and FIG. 4.

The paper feed tray 29 is composed of a front wall 29a, a rear wall 29b, a bottom plate 21]c, and a side plate (not shown).A paper feed opening 30 is provided at the tip of the bottom plate 2Dc. The sheet S stacked on the paper tray 29 is fed from the frontage 30 and fed one by one by the paper feed roller 31 provided under the front wall 20a of the paper feed tray 29. Nori board 3
2 is provided. This partition plate 32 is rotatably supported on a shaft 34 mounted on the base plate 33, and is located above the sheet 1 bar-like object S loaded beyond the rear wall 29b of the paper feed tray. ing. A gear 35 is integrally pivotally attached to the partition plate 32 and meshes with a gear 37 rotatably provided on a shaft 36 attached to the base plate 33. 1I5i integrally pivoted with gear 37! :", 8 has one end attached to the shaft 36 and the other end attached to the spring 39.40". The spring 39 is a tension spring configured to rotate the arm 38 in the direction H1, and the other end of the spring 40 is connected to a solenoid 41. When the solenoid 41 is operating, the arm 38 and the partition plate 32 are located at the solid line positions.

By the way, a hole 42 is bored below the partition plate 32 of the bottom opening 29c of the paper feed tray, and the sheets 1 to 1 on the paper feed tray are detected by means for detecting the presence or absence of a sheet-like object consisting of a lamp 43 and a light-receiving element 44. It is detected that the body S is no longer under the partition plate 32. When the sheet S needs to be fed again based on the signal from the light receiving element 44 and the signal from the Brisera 1 counter, the solenoid 41 is deenergized and the arm 38 is pulled under the tension of the spring 39. to rotate clockwise around the shaft 36. Therefore, the partition plate 32 also has the gear 35.
37, it rotates counterclockwise until it is stopped by the stopper 42 and stops at the position shown by the dashed line. At this time, the sheet-like object S on the partition plate 32 is
completely contained within. After the sheet-shaped body S is stored in the paper feed table 29, the solenoid 41 is activated again and the partition plate 32 is rotated to the position shown by the solid line.

Figures 5 and 6 show still another embodiment of the present invention, and parts that are the same and have the same functions as those in Figures 3 and 4 are designated by reference numerals and detailed explanations are omitted. do.

In FIGS. 5 and 6, the partition plate 43 has one end connected to the shaft 44.
The shaft 4.1 is rotatably supported by the support arm 15. A force lX plate 4G is fixed to one end of the shaft 14. On the other hand, the shaft 48 provided on the board 17
An L6-shaped lever 49 is rotatably mounted around the lever 49. One end of the L6-shaped lever 49 is connected to a spring 50a, 501), and a pin 51 is provided at the other end.
is configured to engage force 11 plate 46. When the solenoid 52 attached to one end of the spring 50a is in the OFF state, the lever 49 is in the solid line position due to the action of the spring 50b, and the pin 51 is disengaged from the cam plate 46. Therefore, due to its own weight, the partition plate 43
It rests on the sheet-like body S inside. When sheets I and sheets S are fed by the paper feed roller 31, the partition plate 43 descends by its own weight, and when all the sheets S in the paper feed tray 29 are fed, the bottom plate 29c of the paper feed tray bottom plate 43 is lowered. Pass through the notch 29d formed below the temporary partition 43 and press the microswitch 53 provided within the passage.

The sheet S stacked on the partition plate 43 and having undergone predetermined processing is again placed on the paper feed stand 29 in preparation for the next paper feed. By the way, when it is necessary to perform further paper feeding operation based on the signal from the microswitch 53 and the signal from the preset counter, the solenoid 52 is energized and the spring 50a rotates the lever 49 clockwise, and the pin 51 is engaged with the cam plate 46, and the partition plate 43 is similarly rotated clockwise so that it is placed on the sheet-like material S on the paper feed table 29 by its own weight.

FIG. 7 and FIG. 8 show still another embodiment of the present invention, in which a receiving table is provided on the paper feeding tray or paper feeding force cell 1 to temporarily accommodate the sheet-like material that has been processed. It is something that A cradle 56 is provided above the paper feed tray 54 to temporarily receive a sheet original that has been exposed to light or a transfer paper that has been transferred to one side from the paper discharge roller 55, and shafts 57a and 57b are provided below the cradle 56. A movable receiving plate 58a that can be rotated around
, 58b are attached. This movable receiving plate 58a,
When the sheet 58b turns in the direction of the arrow as shown in FIG. The separation claw 59 is engaged with the separation claw 59 . At this time, the lever 61 for pushing up the bottom plate 60 of the paper feed table 54 is lowered, making it easy to accommodate the sheet S in the paper feed table 54'\. Since the movable pedestals 58a and 58b are retracted symmetrically from the left and right, the sheets 1 to S can be accommodated on the paper feed table 54 without disturbing the loaded state.

Note that the partition plates 14 and 23 in FIGS. 1 and 2 are moved parallel to the direction of movement of the sheets 1 to 6 to increase the sheet feeding force, instead of moving in the manner shown in FIGS. 3 to 6. It is also possible to evacuate from the cellars h2 and 15.

As described above, according to the present invention, a sheet-like object such as a sheet 1 - an original, a transfer sheet, or a recording sheet 1 - is fed from a paper feed stand or a paper feed force cell 1 - to its processing device, and then the same sheet is fed again. In a device that repeats the operation of feeding sheet-like materials to a processing device, a partition plate is installed on the top of the paper feed table or paper feed cassette to separate the unprocessed sheet-like materials from the processed sheets. Since sheets can be fed and transported by the same paper feeding device, there is no need for a paper ejecting device or intermediate paper feeding device, etc. in addition to the paper feeding device, and the entire device can be downsized. A very inexpensive device can be provided.

Furthermore, the transportation of the sheet-like object is simplified, and by detecting the presence or absence of the sheet-like object using a partition plate and instructing only the number of repetitions, the desired copying operation can be performed fully automatically in an extremely simple manner.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a double-sided copying apparatus showing an embodiment of the present invention, FIG. 2 is a diagram for explaining sheet original transport control of an electrophotographic copying machine showing an embodiment of the present invention, and FIG. 3 4 is a cross-sectional view of a sheet feeding device showing another embodiment of the present invention, FIG. 4 is a plan view of the paper feeding device of FIG. 3, and FIG. 5 shows another embodiment of the present invention. FIG. 6 is a cross-sectional view of the sheet feeding device for sheet-like materials, and FIG. 6 is a plan view of the sheet feeding device in FIG. 5, and FIGS.
The figure is a diagram for explaining a paper feeding device showing still another embodiment of the present invention. 2.15...Paper feed cassette, 29.54...Paper feed tray, 3.16,3]...Paper feed roller, 14.2
3.32.43... Partition plate, 58a, 58b.
...Movable receiving plate, S... Sheet-like body. Riff Akebono f U δ mouth

Claims (1)

[Claims] A paper feed cassette that accommodates a plurality of originals; a separating and feeding means that separates the originals in the cassette from the bottom thereof and feeds them to the exposure section; and a partition means for separating the unexposed original in the paper feed cassette and the exposed and reversed original in the paper feed cassette, and the partition means is configured so that all the unexposed originals are fed into the paper feed cassette. A copying machine characterized in that the original is separated from the original in an exposure section until the original is removed, and then the original is evacuated from the partition position at an appropriate time.