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:
May. 26, 1981
Filed:
Dec. 07, 1979
Applicant:
Inventors:
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
355 / ; 355 / ;
Abstract
A trouble detecting system is incorporated in an copying machine having an illumination lamp for projecting light beams onto an original, optical path for transmitting the reflected light beams from the original onto a photoreceptor surface and a scanning device for scanning the original. The trouble detecting system includes a first detector which is disposed along the scanning path of the lamp for detecting the scanning movement of the lamp and a second detector which is coupled with a driving motor for driving the scanning device for detecting the actuation of the driving motor.