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:
Mar. 15, 2011
Filed:
Mar. 12, 2008
Kohta Takenaka, Yokohama, JP;
Kazunori Bannai, Atsugl, JP;
Hidehiko Fujiwara, Tokyo, JP;
Yu Wakabayashi, Fujisawa, JP;
Kohta Takenaka, Yokohama, JP;
Kazunori Bannai, Atsugl, JP;
Hidehiko Fujiwara, Tokyo, JP;
Yu Wakabayashi, Fujisawa, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
A charging brush unit includes a brush and a conductive holder. The brush includes a plurality of flexible conductive fibers. The plurality of flexible conductive fibers is supplied with a charging bias to generate electrical discharge between a top of the plurality of conductive fibers and a latent image carrier across a gap formed between the top of the plurality of conductive fibers and the latent image carrier. The gap is provided with an electrode. The electrode includes a plurality of openings opposing the top of the plurality of conductive fibers and is supplied with a bias different from the charging bias applied to the plurality of conductive fibers. The conductive holder holds the brush.