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. 13, 1982
Filed:
Oct. 24, 1979
Applicant:
Inventors:
Kouichi Asakura, Tokyo, JP;
Toyoo Okamoto, Tokyo, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03B / ;
U.S. Cl.
CPC ...
355-8 ; 355 / ; 355 69 ;
Abstract
In a reciprocating scan system, movement is stopped for a predetermined length of time between a scan stroke and a return stroke to prevent erroneous imaging of a photoconductive drum (12) which would result in unnecessary loading of a cleaning unit (26) and formation of a partial reversed image in addition to a desired image on a copy sheet (23). Control circuitry (61) may be provided to cause the stopping operation only when the magnification is less than unity or when the length of the copy sheet (23) in the scan direction is longer than the corresponding image length.