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:
Jul. 14, 2015
Filed:
Apr. 24, 2013
Canon Kabushiki Kaisha, Tokyo, JP;
Takashi Birumachi, Kashiwa, JP;
CANON KABUSHIKI KAISHA, , JP;
Abstract
An image forming apparatus that is capable of reducing velocity fluctuation due to variation of friction torque between an image bearing member and an intermediate transfer medium depending on a toner image. An exposure unit forms a latent image on the image bearing member rotated by a first drive unit. A development unit develops the latent image to form a toner image. A primary transfer unit transfers the toner image to an intermediate transfer medium rotated by a second drive unit. A secondary transfer unit transfers the toner image to a sheet. A control unit controls the drive units so that a peripheral velocity difference between the image bearing member and the intermediate transfer medium becomes a first value at starting, and controls so that the peripheral velocity difference becomes a second value larger than the first value when minute toner reaches the position of the primary transfer unit.