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. 03, 2013
Filed:
Jul. 07, 2011
Yuu Sakakibara, Kanagawa, JP;
Kenji Sugiura, Kanagawa, JP;
Naomi Sugimoto, Kanagawa, JP;
Hisashi Kikuchi, Kanagawa, JP;
Yoshiki Hozumi, Kanagawa, JP;
Osamu Naruse, Kanagawa, JP;
Yuu Sakakibara, Kanagawa, JP;
Kenji Sugiura, Kanagawa, JP;
Naomi Sugimoto, Kanagawa, JP;
Hisashi Kikuchi, Kanagawa, JP;
Yoshiki Hozumi, Kanagawa, JP;
Osamu Naruse, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A cleaning device disposed downstream from a transfer position in a direction of rotation of the image carrier to remove toner from the image carrier. The cleaning device includes a normally-charged toner cleaning member to electrostatically remove normally-charged toner from the image carrier, one of a polarity controller to control the toner on the image carrier to have a normal charging polarity and a reversely-charged toner cleaning member to electrostatically remove reversely-charged toner from the image carrier, a pre-cleaning member to electrostatically remove normally-charged toner from the image carrier, a pre-collection member to electrostatically collect the toner from the pre-cleaning member, and a control unit to reduce a voltage applied to the pre-cleaning member immediately after an untransferred toner image is removed from the image carrier by the pre-cleaning member below a voltage applied to the pre-cleaning member during removal of the untransferred toner image.