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:
Jun. 23, 2009
Filed:
Apr. 22, 2008
Ryo Hanashi, Moriya, JP;
Ryo Hanashi, Moriya, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A support member for supporting a cleaning blade of an upstream side is arranged between a charging roller of an image forming unit of the upstream side and a developing sleeve of an image forming unit of a downstream side. The support member is formed using a conductive member (metallic plate), is arranged to completely go across a tangent between the charging roller and the developing sleeve, and is grounded. Even when a developing bias is applied to the developing sleeve during application of a charging bias to the charging roller, the support member can function as a shielding member to prevent noise in the charging bias, which makes it possible to reduce a distance between the image forming units.