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. 31, 2018
Filed:
Dec. 01, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Kazuaki Ono, Kashiwa, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
Provided is an image forming apparatus including an image bearing member, a developing device, a bias applying portion, a driving portion, a transfer device, and a controller. In a case where the length of the recording material is a second length larger than a first length, the controller controls the speed ratio of the driving speed of the developer bearing member to the image bearing member to be a second speed ratio larger than a first speed ratio and controls the residual developer amount born per unit area of the developer bearing member after the developing of the electrostatic image becomes a second developer amount larger than a first developer amount.