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:
Nov. 29, 2011
Filed:
Sep. 19, 2008
Etsuji Kojima, Kashiwa, JP;
Etsuji Kojima, Kashiwa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus is provided in which image forming sections are provided along an intermediate transfer member and in which a test voltage is applied to a transfer member to control a transfer voltage. In the image forming apparatus, the test voltage is applied to a region of the intermediate transfer member in an upstream image forming section. The test voltage is controlled so as to be applied at a time except when that region of the intermediate transfer member passes through a downstream image forming section. Accordingly, when the intermediate transfer member is charged by applying the test voltage to the transfer member in the upstream image forming section, the transfer voltage can be appropriately controlled in the downstream image forming section.