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:
Aug. 03, 2004
Filed:
Sep. 04, 2002
Applicant:
Inventor:
Minoru Matsuguma, Shizuoka, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 1/501 ; G03G 2/100 ;
U.S. Cl.
CPC ...
G03G 1/501 ; G03G 2/100 ;
Abstract
In a color image forming apparatus of a tandem type, a full color image forming mode and a monochrome image forming mode are made selectable. In the monochrome image forming mode, toner is supplied between photosensitive drums for colors that do not contribute to image formation and cleaning devices therefor. Consequently, defective cleaning can be prevented and formation of high quality images becomes possible.