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:
May. 01, 2018
Filed:
Dec. 22, 2016
Canon Kabushiki Kaisha, Tokyo, JP;
Shunsuke Matsushita, Yokohama, JP;
Kodai Hayashi, Suntou-gun, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image forming apparatus includes a developing device including a developer carrying member, a developer supplying member and a regulating member. Also provided are a first power source for the developer carrying member, a second power source for the regulating member, and a controller. In a period from a start of a developing operation to an end of the developing operation for printing an image on a single recording material, the controller effects control of a potential difference between the developer carrying member and the developing blade so that a force for urging the developer from the regulating member toward the developer carrying member acts on the developer at a contact portion between the regulating member and the developer carrying member. The force acting on the developer being is stronger at the end of the developing operation than at the start of the developing operation.