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. 14, 1990
Filed:
Oct. 21, 1988
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ;
U.S. Cl.
CPC ...
355219 ; 355246 ; 355261 ; 355265 ; 355266 ; 355327 ;
Abstract
A charging process, an exposure process, and a development process are performed to form a toner image on a photosensitive member for each of a plurality of different colors. The toner images for the respective colors form a composite color image. The composite color image is transferred to a sheet. A potential of toner on the photosensitive member is varied before the development process for a final color is performed. The colors may be yellow, magenta, and cyan respectively.
Yamamoto, Hajime. (1990). Method and apparatus for color electrophotography (U.S. Patent No. 4949125). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4949125
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