JPS60120370A - Copying machine - Google Patents

Abstract

PURPOSE:To facilitate copying operaton by storing the number of copies for every original and making an indication when the cumulative value of copies becomes larger than the number of stacked forms, and feeding respective originals automatically during copying operation. CONSTITUTION:The number of copies for every original is inputted on an operation panel 34 and stored in an RAM 33e of a control part 33. The cumulative value of the plural number of original copies is calculated by the control part 33 and compared with the number of stacked form in a paper feed tray 4; and when the number of forms is less, that is displayed on the display part of the operation panel 34. When a copy start key is operated, originals 35 on an original platen 10 are conveyed on a platen 15 successively to take copies as many as the previously inputted number.

Description

[Detailed Description of the Invention] [Technical Field] The present invention uses automatic document feeding and a memorized number of copies based on the order of the documents, so that it is not necessary to set the number of copies for each set of multiple documents. To provide a copying machine which can automatically perform copying and displays when the cumulative number of copies is greater than the number of stored sheets per month, thereby eliminating the hassle of replenishing paper during copying operations.

[Prior art]

As a conventional copying machine, there is one shown in FIG. 1, for example. This copying machine has a platen 2 disposed on the top surface of the main body 1 so that originals can be placed one by one, and a lid 3 hinged on the top surface of the main body 1 to press the originals placed on the platen 2. , a paper feed cassette 4 that stores paper of a desired size and is removably attached to the main body 1, and buttons for setting paper size, reduction ratio, interrupt, number of copies, etc., and operations installed on the top of the main body. Each time the panel 5 and the copy start button on the operation panel 5 are operated, paper is fed from one of the cassettes,
It is composed of a guide section 6 that sequentially receives and stops the sheets on which transfer and fixation have been completed. Although not shown, inside the main body, there is a scanning unit that optically scans the document surface, an optical system that scans the document surface and guides the multiplication table to the exposure position, and an optical system that scans the document surface and guides the multiplication table to the exposure position. A photoreceptor whose content is formed as an electrostatic latent image, a developer that attaches toner to an electrostatic layer on the surface of the photoreceptor to form a visible image, and a transfer device that transfers the developed visible image onto plain paper. , a fixing device for fixing the transferred image on the paper surface, etc. are housed.

In the above configuration, when copying, lift the lid 3 of the original to be copied, place it on a predetermined position on the platen 2, close the lid 3, and set the paper size according to the reduction ratio and original size using the operation panel. Select by button. When making a selection, if the desired size of paper is not set, pull out one of the paper feed cassettes 4 and insert the paper feed cassette with the desired size of paper set in the replacement slot. Set the number of sheets and the preparation is complete. When the copy start button is operated in this state, 91 sheets of paper of the desired size are dispensed from the paper feed cassette 4 for one copy, and are sent to the guide section 6 after being transferred and fixed. If the number of copies is set to n, n copies are sequentially sent to the guide section 6 every time copying is completed.

After all copies of one original are completed, the lid 3 is lifted, the original is removed from the platen 2, another original to be cohesed is placed at a predetermined position on the platen 2, and the lid 3 is closed. Next, set the number of copies, the reduction ratio, and the paper size using the operation panel 5, and press the copy start button to feed the paper into the paper cassette, copy it, and move it to the guide section 6.
will be sent to.

However, with conventional copying machines, when there are multiple originals, the number of copies is set for each original, which makes the setting operation cumbersome, and if the paper runs out during the copying operation. However, there is the inconvenience of having to interrupt the copying operation and replenish paper.

[Object and structure of the invention]

The present invention has been made in view of the above, and in order to eliminate the hassle of setting the number of copies for each original, and to avoid interrupting the copying operation and replenishing the paper, the present invention has been made. The number of copies of each previously set original is memorized, and when the cumulative number of copies is greater than the number of stored papers (remaining amount), it is displayed, and each original is automatically fed during copy operations. The present invention provides a copying machine designed to do the following.

〔Example〕

Hereinafter, a copying machine according to the present invention will be explained in detail.

FIG. 2 shows an embodiment of the present invention, and the same parts as in FIG. A suction unit 11 that separates only the top 351 originals on the document platen 10 from the others by vacuum suction, and a suction drive that sucks air through the nozzle part of the suction unit 11 and moves it to the conveyance system. 12, a document 35t from the adsorption section 11, a feed roller 13 that sends out the document 35t to the platen side, and a feed roller 13 to feed the document 3 to the platen side.
a document detection sensor 14 that detects that the document 5 has been fed; a platen 15 that brings the document into close contact with the surface;
5, a roller 16 that transports the original at a constant speed, a fluorescent lamp 17 that irradiates light over a predetermined width of the original 35 that is fed at a constant speed, and a roller 17 that detects when the scanned original 35 has passed over the platen. Original passage detection sensor 18 and sensor 18
The document tray that accommodates the original 35 that has passed through and has been copied is on table 1.
9, a paper feed roller 20 that dispenses only the topmost sheet of paper from the paper feed cassette 4, a motor 21 that drives the paper feed roller 20 at a predetermined time, and a motor 21 that drives the paper feed roller 20 up and down depending on the number of sheets stored in the paper feed cassette 4. a paper sheet number sensor 22 that detects the number of sheets based on the angle of the paper feed roller 20, a belt 23 that rotates in pressure contact with the paper feed roller 20 and conveys the paper; a paper detection sensor 24 that detects the document scanning light; an optical system 25 that guides the document scanning light; a photoreceptor 26 that is exposed by the optical system 25 and forms an electrostatic latent image on its surface; A charger 27 that uniformly charges the image, a developer 28 that develops the electrostatic latent image on the surface of the photoreceptor into a visible image using toner, and a developer 28 that develops the developed visible image onto the paper fed from the paper feed cassette 4. Transfer device 2 to transfer
9, a fixing device 30 that fixes the transferred image on the paper after the transfer has been completed, a tray 31 that receives the paper discharged through the fixing device 30, a cleaner 32 that cleans the surface of the photoreceptor after the transfer has been completed, and a document. and a control unit 33 that controls a motor for conveying paper, an adsorption drive unit 12, a paper feed roller 20, a charger 27, a transfer unit 29, etc. based on outputs from various sensors and commands from an operation panel 340. There is.

The control unit 33 receives commands from the operation panel 5 and the document detection sensor 1.
4. An input interface 33b that inputs each output signal of the original passage detection sensor 18, the paper number sensor 22, and the paper detection sensor 24 and sends it to the pass line 33a; and automatic feeding of the original according to the instruction contents of the operation panel 5aj. A program that performs automatic paper feeding, copy processing, and automatic setting of the number of copies per copy is stored in fc, ROM33c, and 1 report≠4'' is -
0PTJ 33 to execute processing according to the log 2m
d, and RAM that temporarily stores processing results and data.
33e, an output interface 33f that outputs control commands etc. in a predetermined format, and a drive circuit 33g that drives a motor etc. in accordance with the control commands output from the output interface 33f.

In the above configuration, a plurality of originals m35 are stacked and set on the document table 10 in the order of copying, and a paper feed cassette 4 containing sheets of the requested copy size is installed in the main body. Next, when the number of copies for each document is input manually from the operation panel 34, it is stored in the RAM 33e of the control unit 33 ((At the same time, if necessary, the reduction ratio, etc. is specified). The cumulative value of the number of copies of the original is determined by the control unit 3.
3, the accumulated value is compared with the number of sheets stored in the paper feed tray 4 (remaining amount), and when the number of sheets stored is smaller, it is displayed on the display section of the operation panel 34 and the paper is loaded before the copy operation. Instruct them to replenish. The number of stored sheets is calculated by the control section 33 by inputting the signal from the sheet number sensor 22.

When the "copy start" key is operated in this state, the suction drive section 12 is activated and the suction section 11'f! : The original 35'lI on the top of the original platen 10 is rotated clockwise, the feed roller 13 and the roller 216 are rotated, and the fluorescent lamp 17, the charger 27, and the transfer device 29 are each powered. supply

The document attracted to the suction unit 11 is caught by the feeding roller 213 and sent to the platen side. At this time, the document detection sensor 14 detects that the document has been fed, and the paper feed roller 20 is driven by the motor 21 to feed the paper. The document sent to the platen 15 is conveyed over the platen 15 at a constant speed by the row 216 and stopped at a predetermined position. Next, when the light is irradiated by the fluorescent lamp 17, it is read by the optical system 25 and the photosensitive surface of the photoreceptor 26 is sequentially exposed (9). On the other hand, the paper is conveyed to the transfer device side by the belt 23. During this process, the paper detection sensor 24 detects the dispensing of the paper, and the control unit 33 counts the number of dispensed sheets.

The exposed surface of the photoreceptor 26 reaches the developing product 28 by the rotation of the photoreceptor 26, toner is attached to the surface by the developer 228, and a visible image corresponding to the electrostatic latent image is formed. The image is delivered to a transfer location. The paper arrives at the transfer position in time with the visible image reaching the transfer position, and the toner image is attached to the paper by the transfer device 29. This adhered toner image is fixed on the paper by the fixing device 30, and copying is completed. Such a copy operation is performed over the number of copies stored in the RAM 33e.

The passage of the original 35 discharged from the platen 15 after the copying operation is completed is detected by the original passage detection sensor 18 . Based on the output signal of this sensor, a second original is delivered, and the above-described operation is reversed to sequentially copy the original. (10) Upon completion of copying, the nine originals are removed from the platen 15 and stored in the original tray 19 one after another. 1+, good paper (recording paper) discharged from the fixing device 30 is placed in the tray 31
are loaded in sequence.

〔Effect of the invention〕

As explained above, according to the copying machine of the present invention, the total number of copies for each document set before the copying operation is stored, and the cumulative value of the number of copies is greater than the number of stored sheets (remaining amount). Since all of them are displayed and each document is automatically fed during a copy operation, it is troublesome to set the number of copies for each document during a copy operation, and it is necessary to interrupt the copy operation to replenish paper. You can save yourself the hassle @

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of a conventional copying machine, and FIG. 2 is a configuration diagram showing an embodiment of the present invention. Explanation of symbols 10...Original table, 11...Adsorption unit, 12...
Adsorption (11) Drive unit, 13... Feed roller, 14... Original detection sensor, 15... Platen, 16... Roller, 17.
...Fluorescent lamp, 18...Original passage detection sensor, 1
9...Document receiver is stand, 20...Paper feed roller, 21...
・Motor, 22...Paper number sensor, 23...Belt, 24...Paper detection sensor, 25...Optical system,
26... Photoreceptor, 27... Charger, 28...
・Developer, 29...Transfer device, 3゜...Fixer, 3
DESCRIPTION OF SYMBOLS 1... Tray, 32... Cleaner, 33... Restraint part, 34... Operation panel. Patent Applicant B±Xerox Shiki Company Agent Patent Attorney Shin Matsuhara Toki Patent Attorney Kiyoshi Muraki Patent Attorney Hei 1) Yudo Tadashi Patent Attorney Atsushi Uejima - Patent Attorney Hitoshi Suzuki (12)

Claims (1)

[Claims] In a copying machine that copies the contents of a document onto copy paper using electrophotography, a plurality of documents f loaded on a document table include: an automatic document feed mechanism that feeds a plurality of documents f one by one to a platen in a predetermined order; and a storage means for storing the number of copies for each of the plurality of originals; comparing the cumulative value of the number of copies with the number of sheets stored in the paper feed unit, and when the cumulative value is equal to the number of sheets stored in the paper feed unit, the number of copies of each of the plurality of originals is stored. The apparatus is characterized by comprising a control unit that causes the paper feeding unit to feed the number of copies to be made from the paper feed unit for each copying operation of each original, and displays the shortage t of the number of stored paper sheets on the display unit when the cumulative value becomes small. copy machine.