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:
Apr. 18, 1978
Filed:
Dec. 06, 1976
Applicant:
Inventors:
Sadao Yamaoka, Toyokawa, JA;
Kenichi Arai, Toyokawa, JA;
Assignee:
Minolta Camera Kabushiki Kaisha, Azuchi, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; B65H / ;
U.S. Cl.
CPC ...
355 14 ; 271258 ; 355 13 ;
Abstract
A jam detecting device for detecting copy paper jamming occurring in an electrophotographic copying machine having a first circuit for detecting the presence of a copy paper which is ready to be fed into various processing stations, a second circuit for detecting the presence of the same copy paper at a position at which it is ready to be discharged out of the copying machine and a timer circuit for measuring the time interval between the detections by the first and second circuits and for producing, in the event the time interval exceeds a predetermined time, a signal indicative of a paper jam occurring in the machine.