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:
Dec. 04, 2012
Filed:
Mar. 16, 2010
Osamu Naruse, Yokohama, JP;
Hidetoshi Yano, Yokohama, JP;
Kenji Sugiura, Yokohama, JP;
Naomi Sugimoto, Kawasaki, JP;
Hiroki Nakamatsu, Fujisawa, JP;
Osamu Naruse, Yokohama, JP;
Hidetoshi Yano, Yokohama, JP;
Kenji Sugiura, Yokohama, JP;
Naomi Sugimoto, Kawasaki, JP;
Hiroki Nakamatsu, Fujisawa, JP;
Ricoh Company, Limited., Tokyo, JP;
Abstract
A cleaning unit that can remove particles of residual toner remaining on an image carrier after transfer and be incorporated in a process cartridge removably installable to an image forming apparatus, includes a brush roller disposed in contact with the image carrier to remove the residual toner remaining on the image carrier from the image carrier, and a polarity control member disposed in contact with the image carrier to control charge polarities of the residual toner remaining on the image carrier before the residual toner is removed by the brush roller. The polarity control member includes a first surface where the polarity control member contacts the image carrier, a second surface where the polarity control member does not contact the image carrier, and a conductive filler that is not exposed on the first surface that contacts the image carrier.