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. 16, 2011
Filed:
Apr. 09, 2008
Taichi Yamada, Kanagawa, JP;
Yosuke Tsurumi, Kanagawa, JP;
Akira Matsumoto, Kanagawa, JP;
Fusako Kiyono, Kanagawa, JP;
Taichi Yamada, Kanagawa, JP;
Yosuke Tsurumi, Kanagawa, JP;
Akira Matsumoto, Kanagawa, JP;
Fusako Kiyono, Kanagawa, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
The present invention provides an image forming apparatus comprising at least an image holding member, an charging unit, a latent image forming unit, a developing unit, an intermediate transfer belt, a primary transfer unit, a secondary transfer unit, a fixing unit, and a cleaning unit, wherein a surface hardness of a side, of the intermediate transfer belt, contacting with the image holding member being 10 to 30, a carrier in the developer having at least two resin-coated layers on a surface of a core material containing ferrite, and the core material having a surface roughness Sm of 2.0 μm or less, a surface roughness Ra of 0.1 μm or more, and an average a circularity degree of 0.975 to 1.000.