JPS63212959A - Control system for copying machine - Google Patents

Abstract

PURPOSE:To prevent an unnecessary copy from being generated, by stopping a copying operation by an input signal from other input means than a means for inputting a signal for stopping the copying operation before starting a specific copying sequence after starting the copying operation. CONSTITUTION:By depressing a print key 1 for starting a copy operation, a copying operation sequence is started in accordance with a copying mode which has been set before depressing said key. This sequence is usually executed, based on a slit disk provided on a main driving part, and a pulse signal of a pulse generator by a photointerrupter. In this case, when a setting error of a copying mode has occurred after depressing the key 1 for the purpose of a copying operation, this system is constituted so as to receive even an input of other hey 1, etc. than a clear/stop key 2, if it is within a prescribed time. In such a way, the generation of an unnecessary copy can be prevented.

Description

[Detailed description of the invention] (Technical field) The present invention relates to control of a copying machine.

(Prior Art) In a conventional copying machine, the copying sequence can be stopped by pressing the clear/stop key after the printing key is pressed, after the copying sequence starts, and before paper feeding starts. However, the reason for stopping the copying operation after pressing the print key is when some abnormality, such as an error in the copying mode, is noticed after pressing the print key, and the stopping operation is required to be performed urgently. In such a case, in the conventional system, only the clear/stop key is effective for stopping the operation sequence, so in an emergency, the clear/stop key cannot be pressed and unnecessary copies are often made.

(Purpose) The present invention is designed to stop the copying operation by pressing any key within a certain period of time if there is an error in the setting of the copying mode by pressing the print key for copying operation and making unnecessary copies. The purpose is to prevent the creation of

(Construction) The present invention prevents pressing of the print key for copying operation, or if copying is canceled due to an error in the copy mode settings, even if any key other than the clear/stop key is pressed within a certain period of time. This is a control method for a copying machine in which a copying operation stop function is activated.

The configuration of the present invention will be described below based on one embodiment. Copying modes are becoming more complex as copying machines become more sophisticated. For this reason, copies are often made in unintended copy modes. - As an example, the fifth
A copying machine having an operation unit as shown in the figure will be described.

In the copy function, when the print key 1 is pressed to start a copy operation, a copy operation sequence is started according to the copy mode set before the press is pressed. This sequence is normally performed based on pulse signals from a pulse generator using a slit disk provided in the main drive section and a photointerrupter.

FIG. 2 shows an example of a timing chart of copying operations. Once paper feeding starts, it is difficult to return the paper to the position before feeding, so in this embodiment, a request to stop the copying operation is accepted before the paper feeding begins in the range shown in Figure 2. However, you may choose an appropriate time for the pond.

In conventional copying machines, the only input key for requesting to stop the copying operation is the clear/stop key 2, but this has the disadvantages mentioned above. In order to eliminate the drawbacks of the prior art, the present invention allows input keys for requesting to stop the copying operation to be accepted manually using keys other than the clear/stop key 2.

The keys that can be used to stop the copying operation may be limited to, for example, only the print key 1, or all keys may be used to stop the copying operation. It is also desirable to temporarily stop the original functions of these keys. Once the sheet feeding operation has started, the copying operation will not stop no matter which key is pressed, and at least one copy sequence will be executed. After the paper feeding operation starts, the functions of each key become their original functions.

FIG. 1 is a flowchart of sequence control in an embodiment of the present invention. When the print key 1 is pressed in the standby state, a signal is generated from the pulse generator due to rotation of the main motor, and this signal is counted and used as a sequence counter SC. Sequence control performs each process based on the count value of this sequence counter. Each process is executed when the count value of the sequence counter is as shown in the timing chart of FIG.

When the count value reaches 20, charging of process 1 is performed, and when the count value reaches 245, bias is applied as process 2, and then process 3 (registration MC on), process 4 (paper feed MC on), etc. depending on the count value. is executed subsequently.

As shown in the flowchart in Figure 1, if the count value SC of the sequence counter is 290 or less (before paper feeding processing), the presence or absence of key power is always determined, and if key power is present, processing to stop the copying operation is performed. Let's do it. Note that the determination of ``sequence counter SC≧290?J'' and ``key power available?'' is actually made by setting a copy emergency stop flag.

The copy emergency stop flag is set according to key manual processing as shown in the flowchart of FIG.

In the flowchart of FIG. 3, the copy emergency stop acceptance flag is set when copying is in progress and the sequence counter is below 290, and is reset at other times. Key n including print key, key n+1. When . . . is pressed, if the copy emergency stop acceptance flag is set, the copy emergency stop flag is set. When the copy emergency stop acceptance flag is reset, normal processing for that key is performed.

FIG. 4 is a control circuit block diagram of a copying machine according to an embodiment of the present invention.
The copying machine is controlled by a microcomputer.

(Effect) It is possible to easily prevent unnecessary copies from being made in the wrong mode when copying.

[Brief explanation of the drawing]

FIG. 1 is a flowchart of an embodiment of the control method of the present invention;
FIG. 2 is a timing chart of an embodiment of the present invention, FIG. 3 is a flowchart of key manual processing of an embodiment of the present invention, and FIG. 4 is a control circuit block diagram of a copying machine of an embodiment of the present invention.
The fifth factor is an explanatory diagram of the operation section of the copying machine. 1-...Print key, 2...Clear stop key,
3...Display panel.

Claims (1)

[Scope of Claims] 1) In a copying machine equipped with a control means for starting a copying sequence in response to an input signal from an input means for starting a copying operation, the copying operation is performed between the start of the copying operation and before the start of a specific copying sequence. 1. A control method for a copying machine, comprising a control means for stopping a copying operation in response to an input signal from an input means other than means for inputting a signal for stopping the copying operation. 2) A control method for a copying machine according to claim 1, wherein the specific copying sequence is a paper feeding operation. 3) Regarding the input means other than the means for inputting a signal to stop the copying operation during the copying operation, functions other than the copying operation stop function are prohibited from the start of the copying operation to before the start of a specific copying sequence. Claim 1
Copying machine control method described in section. 4) A control system for a copying machine according to claim 1, wherein the input means other than the means for inputting a signal to stop a copying operation during a copying operation is an input means for starting a copying operation.