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, 2015
Filed:
Dec. 05, 2013
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventors:
Kenta Kubo, Kamakura, JP;
Tatsuya Tada, Yokohama, JP;
Satoru Yamanaka, Kawasaki, JP;
Hideaki Okamoto, Yokohama, JP;
Assignee:
CANON KABUSHIKI KAISHA, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G 15/09 (2006.01); G03G 15/08 (2006.01);
U.S. Cl.
CPC ...
G03G 15/0921 (2013.01); G03G 15/0818 (2013.01); G03G 15/09 (2013.01);
Abstract
The developing device includes a developing container that stores a developer including a non-magnetic toner and a magnetic carrier, a toner bearing member that bears the toner and conveys the toner to a developing portion and a separating portion wherein a surface of the toner bearing member includes a plurality of recess structures. A percentage of the recess structures per unit area in a toner bearing region of the toner bearing member is equal to or larger than 55%.