JPS58137847A - Device for displaying inhibition of copying in copying machine - Google Patents

Abstract

PURPOSE:To prevent trouble due to misoperation except copying operation, by inhibiting copying action and displaying warning when setting of a part of mechanism to be operated except copying operation is not perfect. CONSTITUTION:When paper jam occurs, a front door is opened, jammed paper is removed, and operated mechanism parts are perfectly set, and then, the door is closed. To detect a setting state of the operated mechanism parts, a switch 5 is installed in a fixing station, and a switch 6 in a conveyance station, and when the settings are all perfect, a switch 7 is turned on, and it is arranged in series to the switches 5, 6. A control circuit 8 inhibits copying action when this serial connection circuit is turned off, and displays warning on its reason on a set quantity display part 9, thus preventing trouble due to misoperation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for preventing mechanical parts of copying machines that are operated for purposes other than copying operations (for example, the front door opening/closing mechanism, the fixing roller separation mechanism 7, and the vertical mechanism of the paper conveyance system) from occurring due to a paper jam or the like to operate normally. To detect whether or not the settings have been made, and if the settings are incomplete, to prohibit the copy operation and display a warning without adding any special display means, and to perform incomplete copies. It is an object of the present invention to provide a copy prohibition display device for a copying machine that prevents copy operations from occurring and also allows the reason for prohibition of a copy operation to be immediately recognized. Conventionally, the operating section does not have a detection device for settings, or even if it does, it simply prohibits the copy operation, and when restarted, the copy is incomplete or the reason why it does not start. It had drawbacks such as being difficult to understand.

The present invention can solve the above-mentioned drawbacks, and embodiments thereof will be described below with reference to the drawings.

FIG. 1 shows a functional diagram of the copying machine regarding the flow of copy paper. When a paper jam occurs, in order to simplify the handling, the upper fixing roller 1a is replaced by the lower fixing roller 21b.
It is designed to be movable up and down so that the paper conveyance system 3 including the transfer section 2 can be moved toward and away from the photosensitive drum 4 .

To clear the paper jam, open the front door of the copying machine, perform the above operations, remove the jammed paper, completely set the operated mechanism, and complete the procedure with the front door closed. That's what I did.

In order to detect the setting state of the operated mechanical part in the above procedure, as shown in FIG. It is arranged so that it is turned on only when

Furthermore, a switch 7, which is turned on when the front door is completely closed, is connected in series with the switches 4, 5.6, and these are as follows.
If the setting of any one of the mechanical parts belonging to each is incomplete, the column connection circuit is regarded as a loop even if it is connected to the control circuit 8 so that judgment can be made under the same conditions, and if it is not a closed loop, , and performs control to prohibit all operations including copy operations.

Furthermore, in the present invention, in order to notify the reason for copy prohibition,
Display a warning on the number of sheets set (or number of copies per copy) display section 9.
I am trying to do this using .

The set sheet number display section 9 displays the number of sheets to be copied, as shown in FIG. 3, when a copying operation is to be performed, and is configured to have two additional display functions.

One of them is the display of the reason for prohibiting copying, and in this case, as shown in FIG. 4, a warning is displayed by displaying the alphabet "UE".

Furthermore, the self-diagnosis function of the control circuit 8 allows
When a failure is detected, it is distinguished by a display such as "E!" as shown in FIG. 5, and the lower digits are changed to display a display that allows the failure mode to be distinguished.

As described above, the present invention has the excellent effect of being able to prevent troubles caused by operational errors other than copying operations, and displaying warnings about such mistakes without the need for additional dedicated display means. is obtained.

[Brief explanation of the drawing]

FIG. 1 is a functional diagram of the main parts of a copying machine in relation to the flow of copy paper in an embodiment of the present invention, FIG. 2 is a circuit diagram of the main parts of an embodiment of the invention, and FIGS. 3, 4, and 6 are FIG. 3 is a diagram showing display examples in each state of the copying machine according to the embodiment of the present invention. 5. 6, 7...Switch, 8...Control circuit, 9...Number of sheets set (number of copies) display section 0 Name of agent Patent attorney Toshi Nakao, male 1 other personFigure 1Figure 2

Claims (2)

[Claims] (1) Setting status detection that detects whether the mechanical parts that are operated other than the opening/closing of the front door of the copying machine, the separation and separation of the fixing roller, and the copying operation of the upper and lower rings of the paper transport system are set correctly. and display means for prohibiting the copying operation and issuing a warning display when the setting state of the mechanical part is incomplete, and the display means includes a numerical display section for displaying the number of sheets set or the number of copies. 1. A copy prohibition display device for a copying machine, characterized in that the copy prohibition display device for a copying machine is configured to display a warning using alphabetical symbols. (2) As the setting state detection means, use a switch that turns on when the setting of each mechanical part is normal, connect the switches belonging to each mechanical part in series, and send a detection signal to the control circuit. Claim No.
A copy prohibition display device for a copying machine as described in item 1).