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:
Aug. 23, 2005
Filed:
Sep. 24, 2003
Noriaki Sato, Shizuoka-ken, JP;
Hideo Nanataki, Kanagawa-ken, JP;
Tomio Noguchi, Shizuoka-ken, JP;
Naoki Enomoto, Ibaraki-ken, JP;
Noriaki Sato, Shizuoka-ken, JP;
Hideo Nanataki, Kanagawa-ken, JP;
Tomio Noguchi, Shizuoka-ken, JP;
Naoki Enomoto, Ibaraki-ken, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a first image bearing member carrying a toner image, and a movable second image bearing member carrying a toner image. The toner image on the first image bearing member is transferred to the second image bearing member at a first transfer portion, and the toner image on the second image bearing member is transferred to a transfer material at a second transfer portion. The apparatus also includes a charging member contacting the second image bearing member arranged on a downstream side of the second transfer portion and on an upstream side of the first transfer portion in a moving direction of the second image bearing member, and a mark portion having a thickness and being formed on the second image bearing member. A contact region between the charging member and the second image bearing member does not overlap with the mark portion in a direction perpendicular to the moving direction of the second image bearing member.