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:
Oct. 15, 1996
Filed:
Jun. 07, 1995
Applicant:
Inventors:
Akira Kumon, Katano, JP;
Junichi Nawama, Osaka, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
3553 / ; 118645 ; 355274 ;
Abstract
A color image forming apparatus forming toner images of yellow, magenta, cyanogen and black respectively by rotational movement of different image forming units is described. The toner images are transferred to and superimposed on an intermediate transfer belt and then re-transferred to a paper sheet by pressing a transfer roller on the intermediate transfer belt via the paper sheet. A rotational axis of the transfer roller is immovable, and a potential of the transfer roller is electrically floated while the toner images are transferred to the intermediate transfer belt.