JPH03174556A - Copying device - Google Patents

Abstract

PURPOSE:To avoid a failure that one copy is stapled by controlling a copying machine main body so that it does not perform a copying action when the document set number detecting means of an automatic document feeder detects that the set number is one in the case of selecting a stapling mode. CONSTITUTION:The automatic document feeder 2 for feeding a document 6 placed on a document feeding platen to a specified position on the contact glass 10 of the copying machine main body one by one, and post-processing device 3 having a stapling part 3b which receives the copy ejected from the copying machine main body and performs stapling processing are installed in the copying machine main body. At the time of detecting 11 and 12 that the set number of document is one in the case of selecting the stapling mode, the copying machine is controlled so as not to perform the copying action thereof, so that the carrying motor 21 in the post-processing device 3 is not driven. Since the ejecting sensor of the copying machine 18 is not actuated, a stapler 24 is not actuated. Thus, one copy is prevented from being stapled.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying apparatus which includes an automatic document feeder and a post-processing device having a stapling section attached to a copying machine main body.

2. Description of the Related Art Various units have been attached to the main body of a copying machine in order to make the copying machine multi-functional and automated.

FIG. 1 shows an example of a copying system in which an automatic document feeder 2, a post-processing device 3 consisting of a shift sorting section 3a and a stapling section 3b, and a paper bank 4 are attached to a copying machine main assembly. It is a diagram.

The document 6 placed on the paper feed table 5 of the automatic document feeder 2 is fed by a calling roller 7 and a separation roller 8 in order from the bottom.
The documents are fed out one by one and conveyed by the conveyor belt 9 to a predetermined position on the contact glass of the copy 11, where the document is exposed. The automatic document feeder 2 shown in this figure is an automatic circulation document feeder (RADF), in which the exposed document is ejected from above the contact glass 10 by a conveyor belt 9, and the document is placed on the document feed table 5. returned to the pile. In the case of a normal automatic document feeder (ADF),
The exposed original is ejected to the original tray.

A document set sensor 1 is provided at the front end of the document placement area on the document feed table surface, which allows the document feed table 5 to
A registration sensor 12 is provided on the document conveyance path between the separation roller 8 and the entrance of the conveyance belt 9, and from these, it is possible to know the number of document sheets set. Can be done.

The original placed on the contact glass is exposed onto the photoreceptor drum 14 by the exposure device 3 of the copying machine 1.
The toner image formed on the photoreceptor drum 14 by a known electrophotographic process is transferred to copy paper fed from the paper feed cassette 5 of the copying machine main body or the paper feed tray 16 in the paper bank 4, and is fixed. The image is fixed by the device 17, the copying is completed, and the paper is ejected from the paper ejection port 18.

The copies discharged from the paper discharge roller 8 of the copying machine l enter the post-processing device 3. The position of the switching claw 20 is set by selecting either the sorting mode or the stapling mode. When the copying machine 1 starts copying, the conveyance motor 2↓ of the post-processing device 3 is activated, and the copy is conveyed along the conveyance path according to the selected mode.

The shift sorting unit 3a of the post-processing device has a discharge tray 22 that can be shifted left and right in the discharge direction, and is shifted alternately left and right every time it receives copies of the set number of originals, and the copies are shifted from each other according to the number of sheets to be sorted. They can be sorted by stacking them in different positions.

The staple section 3b is provided with a staple tray 23 next to the copy conveyance path, and the conveyed copies are stacked on this. When the last sheet of the copy set passes through the sheet ejection sensor 19 provided at the ejection port 18 of the copying machine main body, a staple signal is sent to the stapling unit of the post-processing device.
When the sheets are ejected, the sheets are aligned and stapled by the stapler 24. The copy bundle with one end stapled is conveyed upward through the stable tray by the conveyor belt 25 and is ejected onto the ejection tray 26.

As shown in FIG. 2, data is transmitted and received between the copying machine 1, the automatic document feeder 2, and the post-processing device 3 through a serial interface using optical fibers. The controller transmits, receives, and processes the information to control each solenoid, each motor, and each clutch, thereby performing necessary operations such as the aforementioned shift sorting and stapling.

By the way, in the conventional copy stapling processing control method, even when there is only one original, if the stapling mode is selected, when a copy of that original is ejected from the copying machine, the ejection sensor 18 is activated. The signal causes the stapler 24 to operate and staple one copy.

This is completely pointless, and even harmful and uneconomical.

Therefore, various control methods have been proposed in which stapling is not performed when only one document is set in the automatic document feeder even if the stapling mode is selected.

For example, Japanese Unexamined Patent Publication No. 62-239173 discloses a control method in which stapling is performed only when a determination means determines that the set number of recording sheets set by a recording number setting means is two or more. has been done.

Further, Japanese Patent Application Laid-Open No. 62-96676 discloses a control method in which stapling is prohibited when the number of recording sheets fed to the stapling means is detected by a number of sheets of recording paper is one.

Furthermore, Japanese Patent Laid-Open No. 62-196677 discloses a method in which when only one sheet of recording paper is transported when selecting a stapling mode, stapling is prevented by storing it in a storage means separate from the stapling section. is disclosed.

The problem to be solved by each of the above proposed methods is to prohibit stapling by the stapling means when the number of recorded sheets is ↓,
This invention is designed to prevent stapling of a single copy, but the present invention can prevent stable binding of only a single copy using a new and completely different means. lI to provide copying equipment
The subject is

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a copying machine in which an automatic document feeder and a post-processing device having a stapling section are attached to the copying machine. The present invention is characterized in that when the detection means detects that the number of sheets set in the document feeder is one, the copying machine is controlled so as not to perform a copying operation.

When it is detected that the number of active originals set is 1, the copying machine is controlled not to perform copying operations, so as explained above, the conveyance motor of the post-processing device is not driven, and the copying machine ejection sensor is also activated. Since the stapler does not work, the stapler does not work either. Therefore, stapling of a single copy is prevented.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

FIG. 3 is a flowchart showing the flow of the document feeding operation of the automatic document feeding device having the configuration described in the first drawing.

The flow of the operation can be understood by looking at the flowchart, but I will explain it briefly. The numbers in the following explanation correspond to the numbers assigned to each step in the flowchart.

■ Checking whether the original is set on the paper feed table.

■ Checking the document feed signal from the copier. (
The original is fed when the paper feed signal becomes set rt 1 u. ) ■ When a document set on the paper feed table is fed, a flag is used to check whether the document is the first document (when the set is set to "1", the flag indicates that it is the first document; Noko＼
Check and set in the subroutine not shown in
t 1 u will be done. ) ■ When the original sheet is fed and the original set sensor is turned off, the number of originals set is determined to be upper, so it is determined that only one original is set on the paper feed table. Send data to the machine. When the copying machine receives this signal, it displays a message indicating that only the upper branch is set with the original document and stops copying.

■ A subroutine that transports the document fed from the paper feed table to a predetermined position.

Note that the document set sensor and registration sensor described in the flowchart are indicated by the numbers ↓ and 12 in Figure 1.
Although the stopper pawl solenoid and the holding plate solenoid are not shown in Fig. 1, they are the stopper release solenoid for hitting and placing the leading edge of the document stack on the paper feed table, and the stopper release solenoid for calling the document stack. These solenoids are used to press the presser plate that presses against the roller 7, and when these solenoids are turned on, document feeding becomes possible.

As described above, when a signal indicating that the number of originals set is one is sent to the copying machine, the copying machine is controlled not to perform a copying operation. As a result, the post-processing device does not operate, and since the copy is not ejected from the copying machine, the stapler does not operate, and the meaningless task of stapling a single copy is no longer performed. Since it is displayed that only the upper branch is set without being copied, copying becomes possible by switching the mode to sort mode.

Effects As described above, according to the present invention, the problem of stapling one copy can be reliably prevented.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a schematic overall configuration of an example of a copying apparatus to which the present invention is applied, FIG. 2 is a control block diagram thereof, and FIG.
The figure is a flowchart showing the flow of document feeding by an automatic document feeding device to which the present invention is applied. Engineering: Copy machine 2: Automatic document feeder 3: Post-processing device 3b: Stapling unit 11, 12: Original document Set sheet number detection means 18・
...Copy ejection sensor 24 ... Stapler

Claims (1)

[Claims] 2. An automatic document feeder that feeds documents placed on a document feed table one by one onto a predetermined position on the contact glass of the copying machine main body; A post-processing device having a stapling section that accepts copies and performs stapling processing is attached to the copying machine main body, the above-mentioned automatic document feeder is equipped with means for detecting the number of set documents, and the above-mentioned post-processing device is configured to select a stapling mode. In a copying machine that performs stapling processing in response to a signal that detects that the last sheet of a copy set to be stapled has been ejected from the copying machine main body, when the stapling mode is selected, the automatic document feeder detects the number of documents set in the above automatic document feeder. A copying apparatus characterized in that when the means detects that the number of sheets set is one, it controls the copying machine main body so as not to perform a copying operation.