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:
Jun. 24, 2014
Filed:
Aug. 23, 2011
Applicant:
Koichi Matsuzaki, Tokyo, JP;
Inventor:
Koichi Matsuzaki, Tokyo, JP;
Assignee:
Oki Data Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G 15/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A development unit including: a developer carrier configured to carry a developer, and capable of supplying the carried developer to an electrostatic latent image; and a developer supplying member configured to supply the developer to the developer carrier and having a surface thereof made of a foamed body. Relationships expressed by v<S/10 and S/Dv≦125 are satisfied, where a cell opening size of the foamed body is S [μm], a volume mean particle diameter of the developer is Dv [μm], and a volume ratio of particles having a particle diameter of 5 [μm] or less to the total developer is v [%].