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. 27, 2025
Filed:
Dec. 22, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image forming apparatus includes a control portion to execute a first operation in which a charging voltage applying portion generates a first potential difference that generates an electrostatic force to move developer from a charging member to an image bearing member, a second operation in which a developing voltage applying portion generates a second potential difference that generates an electrostatic force to move developer from the image bearing member to a developer bearing member, and a third operation in which a transfer voltage having a polarity corresponding to the normal charging polarity of the developer by the transfer voltage applying portion is applied while the developer passes through a transfer portion where the developer is transferred to a developer member. A region on a surface of the image bearing member where the second potential difference is generated in the second operation includes a region where the first potential difference is generated in the first operation.