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Digitally-controlled-image-forming-apparatus

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Digitally controlled image forming apparatus

Details

Inventors: Kawatsura, Yoshihiro; Shimizu, Katsuichi; Sakamaki, Hisashi;
Assignee: Canon Kabushiki Kaisha (Tokyo, JP)
Primary Examiner: Moses; R. L.
Assistant Examiner:
Attorney, Agent or Firm: Fitzpatrick, Cella, Harper & Scinto

An image forming apparatus includes a recording member, image forming devices for forming an image on the recording member, a detector for detecting the state of the apparatus and a digital control having a stored main program for actuating the elements for image formation, wherein the digital controller includes a stored program to be executed upon interruption of the execution of the stored main program and an input port for causing execution of the interruption program, and the detecting means being connected to the input port to cause, in response to the detection signals, the execution of the interrupt program in response to the detected state.

DETAILED DESCRIPTION The object of the present invention is to provide an image forming process with stored program control free from the above-mentioned drawbacks and an apparatus therefor.
Another object of the present invention is to provide an image forming process and an apparatus therefor utilizing a digital computer and capable of detecting the operational state of the machine, and performing corresponding process functions in real time.
Still another object of the present invention is to provide an image forming process and an apparatus therefor utilizing stored program control and capable of performing timing functions of process control with a relatively small memory capacity.
Another object of the present invention is to provide an image forming process and an apparatus therefor utilizing stored program control and capable of immediately detecting various troubles of the machine and taking necessary safety measures.
Another object of the present invention is to provide an image forming process and an apparatus therefor provided with a control system effectively performing sequenced operations of various loads for process control and safety functions such as appropriate indication or power cut-off in response to troubles appearing during the course of the process control.
Another object of the present invention is to provide a transfer-process electrophotographic apparatus utilizing a controller wherein a data RAM, a program ROM, a processing register and an I/O latch port are incorporated in a semi-conductor element.
The above-mentioned and other objects of the present invention will be achieved by the embodiments of thereof explained in the following.

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