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. 31, 1990
Filed:
Sep. 19, 1989
Applicant:
Inventors:
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355296 ; 355299 ; 355327 ; 118652 ; 430125 ;
Abstract
A developing unit which accommodates black toner is operated for developing process by black toner only at a proper time when color image forming operation is not performed by other developing units which accommodate other colored toners. Then, a cleaning blade is actuated without conducting transfer process of the developed image onto a transfer material, and residual toner is removed from the photoconductor.