JPH0480767A - Copying machine provided with computer form feeder - Google Patents

Abstract

PURPOSE:To save an user's trouble some work by displaying the manner of the processing of a CF according to a state where the jamming of the continuous form (CF) occurs. CONSTITUTION:The detection states of a CF detecting sensor S1, a CF jam sensor S2, a copy sheet jam sensor, etc., are inputted into a CPU 21. When only the computer form (CF) is jammed, a display to set the next page of the CF is carried out on a display panel 22c. At this time, the jamming does not occur on the side of a copying machine main body, that is, copying is completed on the former page of the CF, so that it does not matter that the next page is set according to a massage. On the other hand, when both of the CF and the copying machine main body side have the jamming, the display to set the former page of the CF is carried out, that is, the copy sheet for the former page carried at the time when the CF is carried is jammed, so that the setting of the former page to be copied is urged. Thus, the user's trouble is saved.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial field of application This invention feeds a computer four-J (hereinafter referred to as CF) along a document table, and a copy area (copy area) of the CF. This invention relates to an improvement in a copying machine that prints on the document table seven times.

fb) Prior Art] Continuous paper (CF), which has paper feeding holes formed at both ends, is used for data output from computers. A copying machine that copies this CF is equipped with a sprocket near the document table, and a CF feeder (hereinafter referred to as CFF) that feeds the CF and sets the copied page of the CF on the document table by the rotation of this sprocket. There is.

1. When copying by continuously sending CF in a copying machine equipped with a CFF as described above, the CFF is activated to switch to the next page when the exposure process for the previous page is completed. There is.

During this time, the copy processing for the previous page, that is, processing such as development, transfer, fixing, and ejection, continues, and the copying of the previous page and the replacement operation with the new CF page are performed in parallel. It'll save you time.

Problems to be solved by the FC+ invention When a jam occurs in the CF in such a device that performs CFlq feed control, the user must turn the CF page forward or backward to make the next operation possible. However, since CF is a continuous paper, this work is extremely troublesome. If a jam occurs only in the CF, the copying up to the previous page has already been completed, so the process is still better, but if the CF jam and the copy paper jam occur at the same time. It is very difficult to know how much of the copy has been completed and which page should be set next, and the user has to compare it with the copied paper while processing, which causes a lot of trouble for the user. Furthermore, in copiers equipped with a double-sided copying function that copies separate pages on the front and back sides of copy paper, the task becomes even more complicated and troublesome.

An object of the present invention is to provide a CFF shirt that can reduce the user's effort by finding and displaying the next page to be set when a CF shirt occurs.
The objective is to provide copying machines equipped with

(Means for Solving Problem 61) The first invention according to this publication is a copying machine equipped with a CFF that feeds a CF and sets pages to be copied on a document table, in which a jam occurs only in the CF. A means for displaying a display prompting the user to set the next page of the CF when the paper jams, and a means displaying a display prompting the user to set the page immediately before the CF when both the CF and copy paper are jammed at the same time. shall be.

In addition, the second invention of this application includes a CFF that feeds a CF and sets a page to be copied on a document table, and also copies an image of one page onto the surface of copy paper sent out from a paper feed section. In a copier equipped with a double-sided copying function that later conveys this copy paper to an intermediate tray and copies the next page on the back side of the copy paper sent out from this intermediate tray, when a jam occurs in only the CF, the next page of the CF means for displaying a display prompting the user to set a page; and means for displaying a display prompting the user to set the previous page when both CF and copy paper are jammed at the same time and the copy paper is being fed from the paper feed unit; , CF, tri and copy paper both jam at the same time,
Further, when the copy paper is being fed from the intermediate tray, a means for displaying a prompt to set the previous page and even the previous page is provided.

te+ Effect The first invention according to this application is directed to a conventional copying machine, and when only the CF is jammed, a message is displayed to set the next page of the CF. In this case, the fact that there is no jam on the copier main body side means that the CF
This means that the copying of the previous page has been completed, so you can copy the next page according to the message. Further, if both the CF and the copying machine main body side are jammed, a message is displayed to set the previous page of the CF. In this case, it means that the copy paper of the previous page, which is being carried out in parallel with the CF8 feed, has jammed, so it is necessary to set the previous copy page.

Further, the second invention of this application is directed to a copying machine equipped with a double-sided copying function, and like the first invention, when only the CF jams, a display is displayed to set the next page. Ru. However, if both the CF and the copy paper jam, it is first determined whether the copy paper was fed from the paper feed section or from the intermediate tray.

If the copy is being made from the paper feed unit, there is a jam during copying on the front side, and a message is displayed to return to the previous page to copy that page again. In addition, if the copy paper is being fed from the intermediate tray, the jam occurs while copying to the front side is completed and copying to the back side is being performed. Therefore, it is necessary to copy again from the front side, and the page corresponding to the front side copy,
In other words, a message is displayed to return you to the previous or even previous page.

Embodiment FIG. 4 is a schematic front view of a copying machine equipped with a CFF and double-sided copying function, which is an embodiment of the present invention.

A document table 1 made of transparent hard glass is provided on the top surface of the copying machine main body. CF pages to be copied, sheet-like originals, books, etc. are set on the document table 1. An optical system 2 including a light source 2a, mirrors 2b to 2e, and a lens 2f is provided below the document table 1.
F, sorted originals, etc. are scanned and the reflected light is guided to a photoreceptor 3 in the main body of the copying machine.

A CF mounting table 4 for placing uncopied CFs is provided on the upper left side of the copying machine body, and a CF mounting table 4 for placing copied CFs is provided on the right side.
A stock stand 5 is provided from which the stock is discharged. Further, a sprocket 6 is provided below near the document table 1.

The CF is mounted on the left CF mounting table 4 by this sprocket 6.
From there, it is transported to the stock stand 5 on the right side. Note that manuscript table 1
A sensor 81 on the left side detects the rear end of the CFO, and a sensor 82 on the right side of the document table detects a CF jam.

Copy process devices such as a charging device, a developing device, and a transfer device are arranged around the photoreceptor 3.

Further, a paper feed section 7 including a manual feed cassette 7a, paper cassettes 7b and 7c, and a paper feed roller is provided on the right side of the copying machine main body. During one-sided copying or double-sided copying on the front side, copy paper is fed from one of the trays, cassettes 7a, 7b, and 7C of this paper feeding section 7, and passes through the transfer section of the photoreceptor 3 and the fixing device 8. By doing so, an image is formed on the upper surface. During one-sided copying, the copy paper is discharged to the paper ejection section 9, but during double-sided copying, it is conveyed to an intermediate tray 10 located at the lower part of the main body of the copying machine. Note that a paper reversing section 11 is provided in front of the intermediate tray 10, and the paper is fed into the intermediate tray 10 after the front and back sides of the paper are reversed using a switch hack method. The copy paper in the intermediate tray 10 is sent toward the photoreceptor 3 when the CF page on the back side is set on the document table 1 and copied, and the image of that page is copied on the back side.

In a conveyance system in which copy paper is conveyed, jam sensors are disposed at locations where jams are likely to occur. For example, a paper entry sensor placed in front of the manual feed tray 7a, paper cassettes 7b, 7c, etc., a peel sensor placed in front of the transfer section of the photoreceptor 3, and a paper output section placed at the rear of the fixing device 8. Sensors, etc.

FIG. 3 is a block diagram of the control section of the copying machine. The operation of the copying machine is controlled by a CPU 21. As shown in FIG. CPU2
] is input with the detection states of various sensors such as the CF detection sensor S], the CF jam sensor S2, and the copy paper jam sensor. In addition, the CPLI 21 is operated by the manual key 22 of the operation unit 22.
It accepts inputs such as 2.22b and displays error messages and the like on the display panel 22c of the operation section 22. The operation unit 22 includes a CFF motor 22a that is pressed when copying a CF, a print switch 22b for starting the copy process, and a display panel 2 consisting of a liquid crystal or the like.
Equipped with 2C. CP [J21 has CF transport system 23,
A copy paper transport system 24, a copy process device 25, an optical system 26, etc. are connected, and these operating units are controlled in response to input keys of the operating unit and inputs from the sensor group.

A method for detecting CF jam and copy paper jam in this copying machine will be explained.

First, as shown in FIG. 2, a plurality of feed holes 31a are formed at both ends of the CF. The CF 31 is fed through the hole 31a by the sprocket 6, and the CF jam sensor S2 is disposed opposite to the feed hole 31a. Since the CF is fed at a constant speed during conveyance, the CF jam sensor S2 generates pulses at constant intervals as shown in the lower part of FIG. However, if the CF jams, this pulse is disturbed and the sensor S2 turns on two times in a row or turns off continuously.

In addition, in the case of a copy paper jam, since the copy paper is normally conveyed at a constant speed, the time required for the copy paper to pass one sensor and reach another sensor is known in advance. Therefore, if the copy paper does not pass within the time (not detected by the sensor), it is determined that there is a jam. For example, if the paper entry sensor does not turn on within a certain period of time after the paper feed roller starts rotating, it is determined that a paper jam has occurred at the paper entry section. Further, if the peeling sensor is not turned on within a certain period of time after the paper entry sensor detects copy paper, it is determined that a jam has occurred near the transfer section.

FIG. 1 shows a processing procedure related to detection and processing of a sticky jam. 3A shows the CF jam detection procedure, FIG. 1B shows the copy paper jam detection procedure, and FIG. 1C shows the processing procedure after the jam is detected. Note that in this example, in order to make the explanation easier to understand, the number of CF conveyance pages is limited to one page at a time.

When the CFF mode is set, the CF is fed, and the page to be copied is placed on the document table 1, the optical system 2 scans the page and guides the reflected light to the photoreceptor 3. Optical system 2
scans the number of sheets input from the operation unit 22, and when this scanning is completed, the CFF operates to set the next page of the CF on the document table 1 (nl→n2).
. At this time, a flag is set when the CFF starts operating (n3). After the CF feeding starts, the jam sensor S
2 continues to be on or off for a certain period of time, it is assumed that a CF jam has occurred and the CFF operation is stopped.
The process advances to the jam processing routine (n4→n5). On the other hand, if the setting of the next page is completed without detecting a jam, the CFF
is stopped, the flag is reset (n6→n7→n3), and the process proceeds to exposure processing. As you can see, the flag is C.
F is set during transport.

On the other hand, if copy paper jams in the copying machine main body, the operation of the copying machine main body side is stopped and the process proceeds to a jam handling routine (n11→n12). Note that at this time, the CFF is being driven separately, and if the CFF is in operation, its operation will not be stopped.

CF, if copy paper jam occurs, n21
First, it is determined what kind of jam it is.

If the copy paper has already been ejected or fed into the intermediate tray and the jam is only in the CF, the message "Please advance the CF to the next page" is displayed (n22). At this time, in the CF, both the previous page and the next page are on the original platen 1.
- In this state, correct copying is performed by proceeding to the next page.

If both CF and copy paper jam, n
In step 23, it is determined whether the copy paper is fed from the paper feed section 7 or the intermediate tray 10 (n2
3). And if the paper is being fed from the paper feed section, 'CF
Please return to the previous page. ''' is displayed (n
24). Also, if the copy paper is being fed from the intermediate "ray 10," return the CF to the previous page, and then
Please go back to the page. ' is displayed (n25).

If you are copying on the front side of the copy paper, you can just go back to the previous page using LJ, but if you are copying on the back side, you will have to recopy the front side as well, so you will need to go back two pages.

If only copy paper is jammed, it is first determined whether the jammed paper is the last sheet (n26). If the CF oversetting of the next page has already started with the last sheet of copy paper, wait until the CF setting is completed, and if no CF jam occurs during that time, the copy paper will be fed from either the paper feed section or the intermediate tray. Determine whether paper has been written (n27
→n28→n29). If the paper is being fed from the paper feed section 7, the message "Please move the CF back one page." should be displayed (n30), and if the paper is being fed from the intermediate tray 10, the message "Please move the CF back two pages should be displayed." .

is displayed (n31). If the CF page is returned based on this, copy processing can be performed without loss.

Also, if only the copy paper is jammed and the paper is not the last page, it is not related to the CF feeding operation and a normal copy paper jam is displayed (n32).
.

By displaying the number of pages to be returned in accordance with the jam state in this manner, the user can save the trouble of checking the pages and can return pages without making mistakes.

Note that this embodiment shows an example in which the CF is set one page at a time as described above, but there may be cases where a predetermined number of pages are skipped and copied, and in that case, the display of the page to return to or the page to proceed to may be changed. The method is different from the display example above. Normally, the amount of CF conveyance is controlled by a timer according to the number of pages. For example, it takes t1 time to convey one page.
It is determined that it takes 12 hours (tl x 2 hours) to transport two pages. Depending on how many minutes after the start of CFO feeding, the jam occurs, it can be determined on which page the jam occurred, and from this, the number of pages to go back or advance can be determined. If pages are to be skipped and fed, the number of pages determined in this manner may be displayed as the number of sheets to be fed or returned.

tg) Effects of the Invention As described above, according to the present invention, when a CF jam occurs, information on how to handle the CF is displayed according to the situation, so the user can easily check the CF pages and the copied paper one by one. There is no need to compare and confirm which CF page should be set, and the user is not burdened with troublesome effort.

Furthermore, since it is automatically determined how the CF should be processed and the process can be performed based on the information, it is possible to prevent processing errors from occurring, unlike the conventional process in which the user has to confirm the CF.

[Brief explanation of the drawing]

FIG. 1 is a flowchart showing the procedure of CF jam processing according to an embodiment of the present invention, FIG. 2 is a diagram explaining a CF jam detection method, and FIG. 3 is a block diagram of a control unit of a copying machine equipped with a CFF. , FIG. 4 is a schematic front view of a copying machine equipped with a CFF. 1 - 1 original, 2 - optical system, 4 - CF mounting table, 5 stock table, 6 - sprocket, 7 - paper feed section, 9 discharge section, 10 - intermediate tray, S2 - CF jam sensor.

Claims (2)

[Claims] (1) In a copying machine equipped with a computer form feeder that feeds the computer form and sets the page to be copied on the document table, when a jam occurs in only the computer form, a display prompting the user to set the next page of the computer form. What is claimed is: 1. A copying machine equipped with a computer form feeder, characterized in that the copying machine is provided with means for performing the following steps: and means for displaying a message prompting the setting of the page immediately preceding the computer form when both the computer form and the copy paper jam at the same time. (2) It is equipped with a computer form feeder that feeds the computer form and sets the page to be copied on the document table, and copies the image of one page onto the surface of the copy paper sent from the paper feeder, and then copies the copy paper. In a copying machine equipped with a double-sided copying function that transports the paper to the intermediate tray and copies the next page on the back side of the copy paper fed from the intermediate tray, when a jam occurs only in the computer form, the next page of the computer form is means for displaying a display prompting the user to set the previous page; and means for displaying a display prompting the user to load the immediately preceding page when both the computer form and the copy paper are jammed at the same time and the copy paper is being fed from the paper feed unit. , when both the computer form and the copy paper are jammed at the same time and the copy paper is being fed from the intermediate tray, a means is provided for displaying a prompt to set the previous page, and the copy paper is fed from the intermediate tray. A copying machine equipped with a computer form feeder characterized by: