JPS60172050A - Copying machine - Google Patents

Abstract

PURPOSE:To discharge automatically the succeeding copying paper remaining in a conveying path by operating a driving mechanism for a conveying system on condition that the copying paper causing a paper jam is removed and that a copying button is operated. CONSTITUTION:When a paper jam arises, some sensor 1 does not generate an output signal upon lapse of preset time. A control part 10 decides the generation of the paper jam from said sensor and stops simultaneously all of driving mechanisms. An LED9 is lighted in the position where the paper jam arises on a display device 8 for locating the paper jam at the same instant when a warning is displayed on a console 2. The lamp of the display is lighted when the jammed copying paper is removed. A paper discharge cycle is executed when the operator pushes a start button upon seeing said lamp. Only the conveying roller in the conveying path is then driven and the copying paper interposed in the conveying path is swept onto a tray 15.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a copying machine that is capable of automatically discharging, in the event of a paper jam, subsequent copy sheets remaining in a conveyance path in addition to one copy sheet that is jammed.

[Prior art]

Conventional copying machines, for example, are equipped with paper jam sensors that detect paper jams by installing paper jam sensors at key points in the copy paper conveyance path (outside of the paper cassette or up to the input side 4 of the 6th tray). There is a version that stops the copy process and stops the machine at the same time.

In the military/military aircraft described above, when a paper jam is detected by one of the paper jam sensors, the machine immediately stops and a ``paper jam occurrence'' indicator lamp is lit on the console. The operator then opens the maintenance/inspection door on the copying machine and manually removes the copy paper that is causing the paper jam. In addition, in the case of a paper jam when multiple copies of the same original are being made, in addition to the copy paper that caused the paper jam, there is also subsequent copy paper in the conveyance path, and removal of these copy papers must be done by the operator. It will be done.

However, in conventional copying machines, if a paper jam occurs, copying cannot be performed again unless all the cobby paper present in the conveyance path is removed, making paper removal work difficult. Ta. In particular, in copiers that frequently receive paper jams, it is easy for operators to leave a single paper jammed unattended.
This may cause inconvenience to the next user.

[Object and structure of the invention]

The present invention has been made in view of the above.

In order to automatically eject subsequent copy paper remaining in the conveyance path in addition to the jammed copy paper when a paper jam occurs.1
A copying machine equipped with a paper ejection cycle control means that operates the drive mechanism of the conveyance system and ejects subsequent copy paper into a tray on condition that the copy paper that caused the paper jam is removed and the copy start button is operated. It provides an opportunity for

〔Example〕

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

FIG. 1 shows an embodiment of the present invention, which is installed at key points in the paper conveyance path from the output side of the paper feed cassette to the input side of the tray, and copies are made within a certain period of 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 paper has passed, a start button, a paper cassette selection button, a copy number setting key, a digital display that displays the number of copies, and the operating status. The console 2 is equipped with a plurality of lamps, etc., and the information from the paper jam sensor 1 and console 14 is used as data to pass line B.
It controls the input controller 3 that sends data to the US, scanning, exposure, development, transfer, fixing, charging, bale feeding system, and paper feeding system for copying in a predetermined order and timing, and also performs paper ejection cycle processing in the event of a paper jam. A ROM 4 that stores various programs to be executed; a CPU 5 that executes the programs stored in the ROM 4 and issues control commands; a RAM 6 that temporarily stores data and processing results; and a lamp of the console 2. An output controller 7 outputs commands to turn on, turn off, control and display control to the paper jam location indicator 8, and LEDs 9 are placed at various locations on the internal floor plan corresponding to the set positions of the paper jam sensor l in the copying machine.
The paper jam location indicator 8 is provided with a paper jam location indicator 8 that emits light to indicate the paper jam occurrence point. Among the above members, one of the members 3 to 7 constitutes the control section 10.

As shown in FIG. 2, the paper jam location indicator 8 is installed on the upper surface of the copying machine body 11 in front of the platen 12 and in a position aligned with the console 2 (note that 13 is a platen cover and 14 is a This is a door that is opened and closed during maintenance and inspection, and 15 is a tray that receives copied paper).

The operation of the above configuration will be explained according to the flowchart shown in FIG. Place the original on the platen 12, close the platen cover 13, set the dual console paper feed cassette (paper size), number of copies, reduction ratio, etc., and operate (press) the copy start button. As a result, copies are sequentially executed until the set number of copies is reached.

If a paper jam occurs for some reason before the set number of copies has been reached, the sensor 1 will not generate an output signal even after the preset time has elapsed, and this will cause the controller 10 to
determines whether a paper jam has occurred and stops all drive mechanisms at once. In addition, at the same time a warning message "One paper jam has occurred" is displayed on the console 2, the LBD 9 lights up in the sketch at the paper jam location display 8 (or in the vicinity). Therefore, the operator opens the door 14i, searches for a location corresponding to the lighting position of the LED 9 inside the machine, and removes the copy paper jammed in the conveyance path at that location. When the copy paper that caused the problem is removed, the lamp indicating ``Press the start button'' on console 2 lights up completely.

When the operator sees this and presses the start button, the paper ejection (purge) cycle begins.

As a result, only the conveyance rollers in the conveyance path are driven, and the copy paper interposed in the conveyance path is delivered to the tray 15. If each of the sensors 13 does not output a signal corresponding to the passage of copy paper within a certain period of time (1), it is determined that all the copy paper in the conveyance path has been discharged, and the conveyance rollers are stopped. At the same time, the console 2 displays "Paper ejection completed" and "Continue copying".

Prompts the operator to perform the next task. Then, when the operator presses the start button, the function as a copying machine is restored and the copying process is executed.

Note that in the above explanation, it is assumed that the paper ejection cycle is executed based on the operation of the start button.
A dedicated operation button may also be provided. Further, although the location display is performed using LEDs, it is also possible to display the location in more detail using an ORT or the like.

〔Effect of the invention〕

As explained above, according to the copying machine of the present invention, a paper ejection cycle is provided so that subsequent copy paper in the conveyance path can be automatically ejected to the tray, thereby minimizing paper removal work by the operator. This makes the copying process smoother and improves work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of the present invention, and FIG. 2 is a perspective view showing the external appearance of a copying machine according to the present invention. FIG. 3 is a flowchart showing an example of the processing of the present invention. 1...Paper jam sensor, 2...Console. 3...Input controller, 4...ROM 5...
CPU6...RAM, 7...Output controller%
8...Paper jam location indicator, 9...LE
Dlo...control unit, 11...copier main body, 12...
-Platen, 14...maintenance/inspection door, 15...tray. Patent Applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Nobuyuki Matsuhara Patent Attorney Kiyoshi Muraki Patent Attorney Taira 1) Tadashi Shiima Patent Attorney Atsushi Uejima - Kai Patent Attorney Hitoshi Suzuki Figure 1 Figure 2 Meat 3 Figure 3

Claims (1)

[Scope of Claim] A copying machine equipped with a paper jam detection means for detecting the presence or absence of a paper jam in a conveying system during execution of copy processing. When the paper jam detection means detects that the copy paper that caused the paper jam has been removed and a command to start a copy operation is issued, the paper jam detection means operates the conveyance system in the conveyance path to remove the subsequent copy paper. 1. A copying machine comprising: a control means for executing a paper ejection cycle process for ejecting paper to a tray.