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:
Nov. 03, 2015
Filed:
Feb. 28, 2014
Hideo Yoshizawa, Kanagawa, JP;
Noriyuki Kimura, Kanagawa, JP;
Yoshihiro Fujiwara, Kanagawa, JP;
Yuki Oshikawa, Kanagawa, JP;
Sohichi Abe, Kanagawa, JP;
Hideo Yoshizawa, Kanagawa, JP;
Noriyuki Kimura, Kanagawa, JP;
Yoshihiro Fujiwara, Kanagawa, JP;
Yuki Oshikawa, Kanagawa, JP;
Sohichi Abe, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing device includes a developer bearer to carry developer, disposed facing an image bearer, a developer conveyance member disposed facing the developer bearer, to agitate and supply developer to the developer bearer, a decompression portion surrounded by upper walls of the developing device and including multiple vents arranged in a longitudinal direction of the developing device and a filter. A number of the multiple vents is greater in either end portion than in a center portion in the longitudinal direction of the developing device.