The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 1988
Filed:
Feb. 04, 1985
Applicant:
Inventors:
Yoshiaki Takayanagi, Kawasaki, JP;
Masato Ishida, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 355 / ;
Abstract
An image forming apparatus which uses process sequence control for forming images using several computers includes circuits for detecting abnormal conditions in either the computer hardware or program sequence. Instruction signals for image formation are entered through an input circuit. When abnormal conditions are detected, the input circuit is prevented from entering instruction signals to one computer and another computer interrupts the image formation process. This other computer transmits data comprising a signal for indicating a process cycle and a signal for indicating disabled image formation.