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. 24, 2018
Filed:
Apr. 15, 2016
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Norihiko Kubo, Toride, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/09 (2006.01); G03G 15/06 (2006.01); G03G 15/00 (2006.01);
U.S. Cl.
CPC ...
G03G 15/065 (2013.01); G03G 15/0907 (2013.01); G03G 15/50 (2013.01); G03G 2215/0129 (2013.01);
Abstract
A developing unit includes a developer bearing member that rotates and bears a developer including a toner and a carrier. A controller switches between a first mode and a second mode based on information which influences a toner charging amount. In the first mode, the developer bearing member rotates during a predetermined operation period from a command of an image forming operation until start of forming the electrostatic latent image. Meanwhile, in the second mode, a total number of rotations of the developer bearing member during the predetermined operation period is smaller than that in the first mode.