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:
Aug. 11, 2009
Filed:
Jun. 22, 2006
Kazutoshi Kobayashi, Hachioji, JP;
Yutaka Miyasaka, Machida, JP;
Mineyuki Sako, Toyokawa, JP;
Nobuyasu Tamura, Hachioji, JP;
Kazutoshi Kobayashi, Hachioji, JP;
Yutaka Miyasaka, Machida, JP;
Mineyuki Sako, Toyokawa, JP;
Nobuyasu Tamura, Hachioji, JP;
Abstract
An image forming apparatus includes: a moving speed ratio change section which changes a circumferential speed ratio between a surface of a developer bearing member and a surface of an image carrier; and a memory section which stores a target value of fog toner. After the circumferential speed ratio has been changed by the moving speed ratio change section, a controller determines a fog control parameter based on comparing the value detected by the fog toner detection section with the target value stored in the memory section. After then, and the controller controls the moving speed ratio change section to return the circumferential speed ratio to the circumferential speed ratio prior to the change.