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. 26, 2005
Filed:
Jul. 02, 2003
Tsuneo Mizuno, Kawasaki, JP;
Hiroki Ohta, Kawasaki, JP;
Atsushi Tano, Kawasaki, JP;
Hiroki Ushiroda, Yokohama, JP;
Tsuneo Mizuno, Kawasaki, JP;
Hiroki Ohta, Kawasaki, JP;
Atsushi Tano, Kawasaki, JP;
Hiroki Ushiroda, Yokohama, JP;
Fuji 'Xerox Co., Ltd., Tokyo, JP;
Abstract
An image forming apparatus in which respective color visible images on tandem-arrayed plural photoconductor drums are sequentially overlay-transferred onto an intermediate transfer belt by application of a primary transfer voltage by intermediate transfer rollers, then the images are transferred at a time from the belt onto a print sheet by application of a secondary transfer voltage by a paper transfer roller. The same primary transfer voltage is applied to the respective color intermediate transfer rollers from one power source. In the intermediate transfer belt, a relative dielectric constant, a surface resistance and a volume resistance are controlled such that potential charged by initial transfer is attenuated to ⅓ or lower than the transfer voltage before a belt position of the initial transfer arrives at a next transfer position.