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:
Oct. 16, 2012
Filed:
Jul. 01, 2010
Hiroki Takayanagi, Abiko, JP;
Hiroki Takayanagi, Abiko, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes an image bearing member; a rotatable transfer roller; a contact separation unit; a driving force transmission portion; a cleaning member; and a control portion. The cleaning member is for removing toner adhering to the transfer roller by contacting with the transfer roller when the transfer roller is in contact with and separated from the image bearing member. The cleaning member cleans the transfer roller in: (i) a first mode in which the cleaning member cleans the transfer roller while the transfer roller in contact with the image bearing member rotates at a first peripheral velocity, and (ii) a second mode in which the cleaning member cleans the transfer roller while the transfer roller separated from the image bearing member rotates at a second peripheral velocity. The control portion controls a voltage applied to the cleaning member according to the peripheral velocity of the transfer roller.