JPS6289034A - Electrophotographic copying device - Google Patents

Abstract

PURPOSE:To obtain both sides copies continuously by simple operation without using a large-size both sides device by providing a means that counts and stores total number of sheets of original after judging whether the total number is odd number or even number. CONSTITUTION:An automatic original feeding device 2 judges whether the uppermost side of the original 4 is odd number-th sheet or even number-th sheet by counting total number of sheets of an original 4 mounted on an original feeding stand 3 and storing it in an original counter. When the total number of sheets is odd number, black copying paper 9 of set number of sheets are carried to a copy stand 18 and only even number-th originals 4 are copied, and when the total number of sheets is even number, only even number-th originals are copied directly. Then, final odd number-th paper 9 and even number-th one side copy 17 and the original 4 are mounted again to a paper feeding cassette 8 and the feeding stand 3 manually. A both sides copy 17 is obtained by copying only odd number-th originals 4 on the copy 17 on which only even number-th originals 4 are copied. Thus, both sides copies can be obtained continuously by simple operation without using a large-size automatic both sides device.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an electronic copying device that is an office equipment and is equipped with an automatic document feeding device. The present invention relates to an electronic copying device that can perform double-sided copying in a copying operation.

(Prior Art) A conventional method for continuously obtaining double-sided copies is to first copy the first original on one side, manually or automatically return the single-sided copy to the paper feeder, and then The operation of duplex copying, in which a second original is copied on the back side and both sides are copied, is successively performed.

The automatic duplex device automatically performs the above operations.

(Problem to be Solved by the Invention) However, in an electronic copying machine equipped with an automatic duplexing device, in order to obtain a double-sided copy by copying on the reverse side of a single-sided copy that has been copied on one side, it is necessary to return the single-sided copy, temporarily dock it, etc. Since a series of operations such as , reversing, and refeeding must be performed sequentially for each pair of double-sided copy documents, the mechanism and control method become extremely complex and expensive. Another problem is that the electronic copying device also becomes larger due to the automatic duplexing device.

The present invention solves the above-mentioned problems and provides an electronic copying apparatus that can continuously produce double-sided copies with simple operations without using an automatic duplexing device.

(Means for Solving the Problems) In order to solve the above problems, the present invention provides electronic information from an automatic document feeder so that the odd-numbered page side and the even-numbered page side of double-sided copying can be continuously copied. The system determines whether the document sent to the document table of the copying device is an odd-numbered or even-numbered document, and controls whether to copy the document or to feed the document without copying.

(for production) When making multiple copies from multiple originals.

The automatic document feeder determines and stores whether the total number of loaded documents is an odd number or an even number. At the start of copying, the originals are sequentially fed from the automatic original feeder to the original table of the electronic copying device. However, if the total number of originals is an odd number, the originals are not copied and are fed without copying, and the copy paper is fed to the number of copies. The same number of sheets are output to the copy table. Next, only the even-numbered M manuscripts are copied one by one, and the odd-numbered manuscripts are skip-fed, and the final odd-numbered copies are blank, and the even-numbered copies are each A plurality of single-sided copies are discharged onto a copy table.

In order to copy the odd-numbered original on the blank sheet of this number of copies and the back side of the one-sided copy, the copying paper table of the electronic copying device is manually loaded. On the other hand, the ejected document is also manually loaded into the automatic document feeder again.

When you start copying again, only the odd-numbered originals fed from the automatic document feeder to the electronic copying device's document table will be copied onto the single-sided copy and the back side of the final blank sheet, and the double-sided copy will be placed on the copy table. It is discharged.

(Example) An example of the present invention will be described with reference to FIGS. 1 to 4.

FIG. 1 is a functional diagram for explaining the flow of copy sheets and documents in an electronic copying apparatus equipped with an automatic document feeder according to the present invention. In the figure, an automatic document feeder 2 is placed on top of an electronic copying device 1, and a document 4 is loaded onto the document feeder table 3 of the automatic document feeder 2 face down, that is, with the image side facing down. Then, the original detection sensor 5 detects the original 4 and notifies the electronic copying device 1 that the original has been loaded.

Next, when a copy start button (not shown) is pressed, the uppermost original 4 of the originals 4 loaded on the original supply table 3 is supplied to the original table 6 of the electronic copying apparatus 1. The paper feed roller 7 is driven by the information that the document supply to the document table 6 is completed, and feeds out one sheet of copy paper 9 loaded in the paper feed cassette 8, so that its leading edge is held between a pair of registration rollers 10. Stop.

On the other hand, the photosensitive drum 11, the charger 12, the transfer charger 13
When the preparation of the separation charger 14 is completed, scanning of the optical part (not shown) begins, and the surface of the photoreceptor drum 11 is charged by the charger 12, and then the latent image of the document 4 on the document table 6 is is formed and visualized by a developing section (not shown). When the xerographic image visualized on the photosensitive drum 11 and the copy paper 9 waiting on the registration roller 14 come to a synchronized position, the registration roller 14 rotates and the copy paper 9 is fed into a transfer charger 13, and a xerographic image is transferred onto its surface from a photosensitive drum 11. Next, the copy paper 9 is peeled off from the surface of the photoreceptor drum II by the separation charger 14 and sent to the fixing device 16 by the conveyor belt 15. The transferred image is fixed on the surface of the copy paper 9, which becomes a copy 17, and is placed on the copy stand 18. is discharged.

Such a series of operations is performed on the original 4 fed to the original platen 6.
After repeating this a number of times corresponding to the number of copies, the automatic document feeder 2 discharges the copied document 19 from the document ejection port 20, and at the same time transfers the uppermost document 4 from the document supply table 3 to the electronic copying device. 1, and the above-described copying is repeated again until there are no originals 4 on the document supply table 3.

In this way, place the image side down on the document supply table 3,
Since the original 4 loaded face down is copied from the last page, it is delivered to the copy table 18 with the first page facing upward.

The operation of the electronic copying apparatus 1 equipped with the automatic document feeder 2 configured as described above will be explained with reference to FIGS. 1 to 4.

FIG. 2 is a plan view of a part of the operation panel of the electronic copying apparatus 1 according to the present invention, in which a number setting button group 21 consisting of 10 push buttons 0 to 9 is a copy 17 for copying from one original 4. This is to set the number of copies, that is, the number of copies. When the number of sheets setting button g21 is operated, the number of sheets is displayed on the number of sheets display 22 at the upper left. When the large copy start button 23 located to the right of the sheet number setting button group 2I is pressed, the copying operation of the electronic copying apparatus 1 is started. The double-sided copy button 24 at the top right is a push button that is operated when you want to perform double-sided copying and when you want to return to normal single-sided copying. The duplex mode indicator 25 disposed at turns on, and the electronic copying apparatus 1 enters the duplex mode.When pressed again, the duplex mode indicator 25 disappears and returns to the normal state of the single-sided mode.

FIG. 3 is a flowchart when copying is performed using the electronic copying apparatus 1 of the present invention, and FIG. This figure shows the copy paper and the state of the copy when making a double-sided copy of a copy.

In FIG. 3, first, in step 26, the copy start button 23 is pressed.
It is determined whether or not the button has been pressed. If it has not been pressed, the electronic copying device 1 waits until the copy start button 23 is pressed. If it has been pressed, the process advances to step 27, and in step 27 the document 4
The document counter, which has the role of storing the total number of sheets and determining whether the total number of sheets is an odd number or an even number, is cleared.

In step 28, it is determined whether the duplex copy button 24 is operated and the duplex mode indicator 25 is lit.

The operator decides whether to make a double-sided copy or a normal single-sided copy by operating the double-sided copy button 24.

You can choose either. If the duplex mode indicator 25 is off, step 29 is explained using the configuration diagram in FIG. A normal one-sided copying operation is performed by the electronic copying apparatus 1 equipped with the automatic original supply bag 2!2.

On the other hand, when the duplex mode indicator 25 is lit, it is determined that the duplex copy mode is selected, and the process proceeds to step 30. In step 30, each time the original 4 loaded on the original supply table 3 is set on the original table 6, 1 is added to the counter, the original 4 on the original table 6 is immediately ejected, and the g original detection sensor detects the presence or absence of the document 4 on the document supply table 3,
Repeat until document 4 is used up. As a result, it is determined whether the total number of originals 4 loaded on the original supply table 3 is an odd number or an even number and is stored. This corresponds to the initial state term shown in FIG.

When the total number of originals 4 has been confirmed and stored, the process proceeds to step 3I, where the ejected originals 4 are manually loaded onto the original supply table 3 again.

When it is determined in step 32 that the copy start button 23 has been pressed, in the next step 33 it is determined whether the total number of sheets of i-draft 4 stored in the document counter is an odd number or an even number. The process proceeds to step 34, where a set number of copy sheets 9 are conveyed and discharged from the paper feed cassette 8 to the copy table 18, and then the uppermost odd-numbered original 4 is fed and discharged. Such idle feeding halts the operation of the charger 12 to prevent a xerographic image from forming on the surface of the photosensitive drum 11, thereby allowing the copy paper 9 to be ejected onto the copy stand 18 as it is.

On the other hand, if the original counter stores an even number, the uppermost original 4 is an even number, so the process goes to step 35, where the original 4 is set on the original table 6, the set number of copies are made, and then the copy is made. The even-numbered originals 4 and the following odd-numbered originals 4 are discharged, and this operation is repeated until there are no more originals 4 on the original supply table 3. When Steps 34 and 35 are completed, all the originals 4 loaded on the original supply table 3 of the automatic document feeder 2 are gone, and there are only an odd number of originals 4 on the copy table 18 of the electronic copying device 1. teeth,
The set number of blank sheets and the even-numbered document 4 again.

When there is an even number of originals 4, only the even-numbered originals 4 are output, and a set number of single-sided copies 17 are ejected and piled up. This corresponds to state 1 in FIG. At this stage, the operation of the electronic copying device 1 is stopped, so the process moves to step 36, and the ejected copied original 19 is manually ejected with the image side down onto the original supply table 3 and then onto the copy table +8. The produced single-sided copies 17 are also manually loaded into the paper feed cassette 8 with the copy side facing down.

This state corresponds to state 2 in FIG.

When the manual reloading of the original 4 and single-sided copy 17 is completed,
In step 37, it is determined whether or not the copy start button 23 has been pressed. If it has been pressed, the process moves to the next step 38, and checks whether the total number of originals 4 stored in the original counter is an odd number or an even number. Check and move on to the next step 39.

In step 39, if the determination in step 38 is that the sheets are an even number, the process advances to step 40, where the even-numbered topmost original 4 that has already been copied is fed, and the odd-numbered original 4 is transferred to the original platen 4. Set to . On the other hand, if the judgment in step 38 is that the number of sheets is an odd number, the step 40 is skipped and the step 41 is directly performed.
Then, the uppermost odd-numbered original 4 is set on the original table 6. Next, after the set number of copies have been made, they are ejected, and the double-sided copy 17 is ejected onto the copy tray 18. When the odd-numbered copy is completed, the presence or absence of the original 4 on the original supply table 3 is detected, and if there is any original 4, the process returns to step 40 and the even-numbered original 4 is ejected, and then the odd-numbered copy is returned to step 41. The original 4 is set on the original table 6 and the set number of copies are repeated. When there are no originals 4 on the original supply table 3, the process moves to a final step 42, where the double-sided mode indicator 25 turns off, copying is completed, and the process returns to the normal standby state. At the end of step 39, in the automatic document feeder 2, all the documents 4 on the document supply table 3 are discharged from the discharge port and stacked as a copied document 19.

In the electronic copying apparatus 1, the blank sheets reloaded into the paper feed cassette 8 and the single-sided copies 9 are all stacked and discharged onto the copy table 18, with double-sided copies 17 each having a set number of copies made thereon. This state corresponds to state 3 shown in FIG.

As described above, in the electronic copying apparatus 1 equipped with the automatic document feeder 2 according to the present invention, the total number of documents 4 is counted and stored in the document counter. If the total number of originals 4 is an odd number, the set number of blank copy sheets 9 are conveyed to the copy table 18, and then only the even-numbered originals 4 are conveyed. Also, when the total number of manuscripts 4 is an even number, directly copy only the even-numbered manuscript 4, and the final copy paper for the odd-numbered copies and the even-numbered copies obtained in this way. The single-sided copy 17 and the original are manually reloaded into the paper feed cassette 8 and the original supply table 3, respectively. By operating the copy start button 23 again, only the odd-numbered originals are copied onto the single-sided copy 17, which is a copy of only the even-numbered originals, to obtain a double-sided copy 17. In this way, double-sided copies can be continuously obtained by simply manually reloading the original 4 and the copy paper 9.

In the above embodiment, only the automatic document feeder 2 was activated in order to determine whether the total number of documents 4 was an odd or even number. If you know, please check the odd number and
Input may also be made from an even number of input buttons (not shown).

Also, if the total number of originals 4 is an odd number, blank copy paper 9
Although the method for transporting the photoreceptor to the copy table 18 is described in which the charger 12 is not activated, a method in which the photoreceptor drum 11 is not irradiated with light may also be used.

(Effects of the Invention) As explained above, according to the present invention, the number of JM manuscripts is counted in advance, and if the total number of manuscripts is an odd number, a set number of copy sheets is conveyed to the copy table. After copying one page at a time starting from the even-numbered last page of the original to obtain a one-sided copy, manually load the original and one-sided copy into the document tray and paper cassette, and then copy the odd-numbered original. It is possible to make a double-sided copy by sequentially copying only the original one by one, and by copying a set number of sheets sequentially from the first page onto the copy stand.

Therefore, it is possible to provide an electronic copying apparatus that can easily make double-sided copies without using a complicated and large automatic duplexing device that involves returning, reversing, temporarily docking, and refeeding copy sheets.

[Brief explanation of drawings]

FIG. 1 is a functional diagram for explaining the operation of an electronic copying apparatus equipped with an automatic document feeder according to the present invention, FIG. 2 is a plan view showing a part of the operation panel of the electronic copying apparatus, and FIG. 3 is a flowchart of the operation of the electronic copying apparatus described above, and FIG. 4 is a classification diagram of states at milestones of steps in the flowchart. 1...electronic copying device, 2...automatic document feeding device,
3... Document supply table, 4... Document, 5... Document detection sensor, 6... Document table, 7... Paper feed roller,
8...Paper cassette, 9...Copy paper, 10.
... Registration roller, 11... Photosensitive drum, 12
... Charger, L3... Transfer charger, 14... Separation charger, 15... Conveyance belt, 16... Fixing device, 1
7... Copy, 18... Copy table, 19... Copied original, 20... Original ejection port, 21... Number of sheets setting button group, 22... Number of sheets display, 23... Copy start button, 24...Double-sided copy button. 25...Double-sided mode indicator. Figure 1 1...Tunsu Renyosho Rentai 11.Kiku Salary Drum 2...Freezer Drum 12.Thousand Tuncho 3...Hara! l #l inner 13pat≦1000 24...Kubaku 14...7000000 5...Rang ah shell is the sensor 15...Yong [Liaobe v'r6 Kyohan G 16
・Hikireishu 7・・Low rut roller 17・・Zuji 8
・K paper kat old zuhi-'199
-81 copy'f1 paper 19...a ears to press 10...regi'Xl-mouth-fa- Shenko Liu ...The number of sticks is 23°°.

Claims (2)

[Claims] (1) In an electronic copying machine equipped with an automatic document feeder, there is a means for counting the number of documents and determining whether each automatically fed document is an odd or even document; A method for selectively copying originals or even-numbered originals and skipping and ejecting originals that are not to be copied, and for double-sided copying in which even-numbered sheets are copied first and the total number of originals is an odd number. teeth,
What is claimed is: 1. An electronic copying apparatus comprising means for conveying a copy sheet as it is for the last odd-numbered document and ejecting it onto a copy table. (2) The automatic document feeder is activated without being linked to the copying operation of the electronic copying device, and while feeding and ejecting documents one by one, the number of documents is counted and whether the total number of documents is an odd number or not. The electronic copying apparatus according to claim 1, further comprising means for storing and determining whether the number of sheets is an even number.