JPH0840635A - Copying machine - Google Patents

Abstract

PURPOSE:To provide a copying machine capable of automatically discharging subsequent copy sheets remaining in a transfer route in addition to a jammed copy sheet. CONSTITUTION:A copying machine is provided with a sheet jamming detection means 1 to detect the presence or absence of sheet jamming in a transfer system during the execution of sheet discharge treatment, control means 3 to 7 to execute the sheet discharge treatment, a command means 2, and a display means 2 to display the completion of sheet discharge treatment after the completion of it. Then the control means executes a step in which the sheet jamming detection means detects the removal of a copy sheet causing sheet jamming, a step in which the execution of discharge of the copy sheet is instructed when an instruction is given from an instruction means, a step in which subsequent copying sheets are discharged into a tray by the operation of a transfer system in a transfer route, and step in which the discharge completion is displayed by a display means after the subsequent copy sheets are discharged into the tray.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine capable of automatically discharging, when a paper jam occurs, a succeeding copy paper remaining in a conveyance path other than the paper jam copy paper.

[0002]

2. Description of the Related Art As a conventional copying machine, for example, a copy paper transport path (from the exit side of a paper feed cassette to the entrance side of a tray)
Install a paper jam sensor to detect paper jams at the required points in
There is a system that stops the machine by detecting the paper jam and stopping the copying process at the same time.

In the above copying machine, when a paper jam is detected by one of the paper jam sensors, the machine is immediately stopped and the "lamped" indicator lamp is lit on the console. Therefore, the operator opens the maintenance / inspection door provided in the copying machine body and manually removes the copy paper causing the paper jam. In the case of a paper jam when multiple copies of the same document are made, there are copy papers that caused the paper jam and subsequent copy papers in the transport path. Done.

However, in the conventional copying machine, if a paper jam occurs, copying cannot be re-executed unless all copy papers existing in the transport path are removed. It was hard. In particular, in a copying machine having many paper jams, a case where an operator leaves the paper jam is likely to occur, which may cause trouble for a next user.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when a paper jam occurs, a paper copy is provided so that the succeeding copy papers remaining in the conveyance path other than the paper jam copy paper can be automatically discharged. A copying machine provided with a paper discharge cycle control means for activating the drive mechanism of the transport system to discharge the succeeding copy paper to the tray on condition that the copy paper causing the jam is removed and the copy start button is operated. Is provided.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a copying machine according to the present invention will be described in detail. FIG. 1 shows an embodiment of the present invention, which is installed in a required place of a paper transport path from the exit side of a paper feed cassette to the entrance side of a tray, and copies within a fixed time after a copy start command is issued. A paper jam sensor 1 that determines whether there is a paper jam based on whether or not the paper has passed, a start button, a paper feed cassette selection button, a copy number setting key, a digital display that displays the number of copies, and a plurality of operating status indicators. Bus line BUS with information from the console 2 provided with the lamps, the paper jam sensor 1 and the console 14 as data
Input controller 3 for sending to the
The ROM 4, which stores various programs for controlling the exposure, development, transfer, charging, conveyance system and paper feed system in a predetermined order and timing, and for executing the paper discharge cycle process when a paper jam occurs, and is stored in the ROM 4. A CPU 5 that executes a program and issues a control command, a RAM 6 that temporarily stores data, processing results, and the like, a lamp for the console 2, lighting and extinguishing control, and a command for display control to the paper jam location indicator 8. And a paper jam location indicator 8 in which LEDs 9 are arranged at various places in the internal drawing corresponding to the set position of the paper jam sensor 1 in the copying machine and the paper jam occurrence point emits light. It Of the above, the members 3 to 7 form the control unit 10.

As shown in FIG. 2, the paper jam location indicator 8 is installed in front of the platen 12 on the upper surface of the copying machine main body 11 and at the position where the console 2 is lined up (note that 13).
Is a platen cover, 14 is a door that is opened / closed at the time of maintenance / inspection, and 15 is a tray for receiving copied sheets).

The operation of the above arrangement will be described with reference to the flowchart of FIG. Place the original on the platen 12
Then, the platen cover 13 is closed, the paper cassette (paper size), the number of copies, the reduction ratio, etc. are set from the console 2, and the copy start button is operated (pressed).
Thus, copying is sequentially performed until the set number of copies is reached. If a paper jam occurs for some reason before the set number of copies is reached, a sensor 1 that does not generate an output signal even if a preset time has elapsed is generated, and the control unit 10 determines the occurrence of the paper jam. At the same time, all the drive mechanisms are stopped at once. At the same time, a warning message of "occurrence of paper jam" is displayed on the console 2, and at the same time, the paper jam location indicator 8 turns on the LED 9 in the sketch at the paper jam occurrence position (or near). Therefore, the operator may open the door 14 to search for a place corresponding to the lighting position of the LED 9 in the machine, and remove the copy paper jammed in the conveyance path of the relevant part.

[0009] When the copy paper causing the cause is removed,
A lamp indicating "Please press the start button" is lit on the console 2, and when the operator presses the start button while seeing this, the paper discharge (purge) cycle is executed. As a result, only the transport rollers in the transport path are driven, and the copy paper existing in the transport path is discharged to the tray 15. When the signals corresponding to the passage of the copy sheet are not output from each of the sensors 13 within a fixed time, it is determined that all the copy sheets in the transport path are discharged,
Stop the transport rollers. At the same time, the display of "paper discharge end" and "copy continuation" are displayed on the console 2 to prompt the operator to execute the next work. The display displayed on the console may be such that only one of the above displays is displayed. Then, when the operator presses the start button, the function as the copying machine is restored again, and the copying process is executed.

In the above description, the paper discharge cycle is executed based on the operation of the start button, but a dedicated operation button may be provided. Further, although the location is displayed by the LED, it can be displayed more finely by using a CRT or the like.

[0011]

As described above, according to the copying machine of the present invention, the paper discharge processing is executed in the copying machine provided with the paper jam detecting means for detecting the presence or absence of paper jam in the conveying system during the execution of the copy processing. And a commanding means, and a display means for indicating that after the paper discharge processing is completed, the paper jam detecting means detects that the copy paper which was the cause of the paper jam has been removed. A step of issuing a copy sheet discharge command when there is a command from the above-mentioned example means, a step of operating a transfer system in a transfer path to discharge a subsequent copy sheet to a tray, Processing for ejecting the copy paper from the tray and then displaying the completion of the ejection on the display means to remove the copy paper causing the paper jam and eject the subsequent copy paper. Execution By instructing, the copy paper remaining in the paper transport path can be ejected, and the subsequent copy paper can be ejected automatically, so the paper ejection work by the operator can be minimized, Copying work can be facilitated and workability can be improved. Further, according to the present invention, when the jammed paper in the transport path system is removed, even if another sheet is erroneously removed and a restart of the copy operation is instructed thereafter, the presence of the jammed paper in the transport path system is detected. Therefore, the copying operation is not restarted, and even if there is jammed paper, the conveyance system is driven and the jamming does not occur again and the succeeding paper is not wasted. It is possible to effectively use the succeeding paper.

Further, the operator can easily recognize the completion of the discharge of the subsequent copy sheet, and can execute the next copy operation.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an appearance of a copying machine according to the present invention.

FIG. 3 is a flowchart illustrating an example of a process according to the present invention.

[Explanation of symbols]

1 paper jam sensor, 2 console, 3 input controller, 4 ROM, 5 CPU, 6 RA
M, 7 output controller, 8 paper jam location display, 9 LED, 10 control unit, 11 copier body, 12 platen, 12 maintenance / inspection door,
15 trays.

Claims (1)

[Claims] 1. A copying machine equipped with a paper jam detecting means for detecting the presence or absence of paper jam in a carrying system during execution of copy processing, a control means for executing paper discharge processing, a command means, and a paper discharge processing completion. After that, the control means has a step of detecting that the copy paper, which was the cause of the paper jam, has been removed, and a command from the command means. In this case, a step of instructing the execution of copy paper discharge, a step of operating the transport system in the transport path to discharge the subsequent copy paper to the tray,
And a step of displaying, on the display means, the completion of the ejection or the fact that the copying can be continued after the succeeding copy sheets are ejected to the tray.