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:
Feb. 11, 2014
Filed:
Aug. 11, 2011
Norio Kudo, Kanagawa, JP;
Yasuo Miyoshi, Kanagawa, JP;
Hiroshi Hosokawa, Kanagawa, JP;
Yoshihiro Fujiwara, Kanagawa, JP;
Hiroaki Okamoto, Kanagawa, JP;
Norio Kudo, Kanagawa, JP;
Yasuo Miyoshi, Kanagawa, JP;
Hiroshi Hosokawa, Kanagawa, JP;
Yoshihiro Fujiwara, Kanagawa, JP;
Hiroaki Okamoto, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A development device includes a developer bearer to carry by rotation two-component developer to a development range to develop a latent image formed on a latent image bearer, a magnetic field generator disposed inside the developer bearer, a developer regulator for adjusting an amount of the developer on the developer bearer, positioned upstream from the development range in a rotational direction of the developer bearer and facing the developer bearer across a regulation gap, a supply compartment from which the developer is supplied by a developer agitator to the developer bearer, a collection compartment, a pre-regulation portion adjacent to and upstream from the developer regulator in the rotational direction of the developer bearer, and a developer mobility adjuster that makes mobility of the developer in the pre-regulation portion higher on an upstream side in a developer conveyance direction in the supply compartment.