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:
Apr. 01, 2003
Filed:
Feb. 27, 2001
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A developing apparatus in which a developer is prevented from attaching to a developer electrifying member. The developing apparatus has a developer carrying body, a regulating member, and a developer carrying member, wherein during a period when developing action is not conducted by the developer carrying body and residual developer is being cleaned, there is a first period during which a first electric field is formed in a direction in which the developer normally charged moves from the developer carrying body to the developer charging member and after the first period there is a second period during which a second electric field is formed in a direction in which the developer normally charged moves from the developer charging member to the developer carrying body.