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, 2026
Filed:
May. 31, 2024
Canon Kabushiki Kaisha, Tokyo, JP;
Kuniaki Tamagaki, Kanagawa, JP;
Shuhei Kawasaki, Shizuoka, JP;
Takayuki Kanazawa, Kanagawa, JP;
Jun Hara, Kanagawa, JP;
Tsubasa Yoshida, Chiba, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An image forming apparatus includes a developer bearing member that transports developer to an electrostatic latent image formed on an image bearing member; a supply roller, including a foam elastic member, that supplies the developer to the developer bearing member; a power source device that applies a developing voltage to the developer bearing member and applies a supply voltage to the supply roller; a power source control unit that controls supply of the developer from the supply roller to the developer bearing member by controlling the developing voltage and the supply voltage; and an image control unit that controls formation of the electrostatic latent image based on image information. The image control unit controls, based on a predetermined value, a change amount of the supply voltage in a period during which image formation is performed.