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. 28, 2026
Filed:
Aug. 15, 2024
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/00 (2006.01); G03G 15/02 (2006.01); G03G 15/043 (2006.01); G03G 15/045 (2006.01); G03G 15/06 (2006.01); G03G 15/08 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0266 (2013.01); G03G 15/043 (2013.01); G03G 15/045 (2013.01); G03G 15/065 (2013.01); G03G 15/0806 (2013.01); G03G 15/0856 (2013.01); G03G 15/0865 (2013.01); G03G 15/5004 (2013.01);
Abstract
Disclosed is a controller for controlling a charging current detector to perform a detection operation to detect charging current while a surface of a photosensitive member having passed through the development portion after being charged by the charger passes through the charging portion during a non-image forming operation, and for controlling at least one of a charging voltage applicator, an exposer, and a development voltage applicator to change a development contrast based on a charging current value detected by a previous detection operation and a charging current value detected by a current detection operation.