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:
May. 24, 2011
Filed:
Nov. 05, 2007
Takaya Muraishi, Kawasaki, JP;
Atsushi Sampe, Yokohama, JP;
Takeshi Shintani, Kawasaki, JP;
Ken Amemiya, Tokyo, JP;
Yoshiki Hozumi, Sagamihara, JP;
Hiroshi Ono, Tokyo, JP;
Takaya Muraishi, Kawasaki, JP;
Atsushi Sampe, Yokohama, JP;
Takeshi Shintani, Kawasaki, JP;
Ken Amemiya, Tokyo, JP;
Yoshiki Hozumi, Sagamihara, JP;
Hiroshi Ono, Tokyo, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
An image forming apparatus includes a charging roller that continuously rotates and uniformly charges a photoconductor for forming an electrostatic latent image thereon, a cleaning roller that contacts a peripheral surface of the charging roller and cleans the charging roller while being driven by rotation of the charging roller, wherein a peripheral surface of the cleaning roller is formed of a melamine resin foam, and a cleaning roller shifting unit that causes the cleaning roller to contact the charging roller for a predetermined time at predetermined intervals of image formation while movably holding the cleaning roller.