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. 20, 2018
Filed:
Dec. 05, 2016
Shinnosuke Koshizuka, Kanagawa, JP;
Koichi Yamazaki, Kanagawa, JP;
Tatsuya Kubo, Kanagawa, JP;
Atsushi Nakamoto, Kanagawa, JP;
Nobuo Takami, Kanagawa, JP;
Kazunori Suzuki, Kanagawa, JP;
Naohiro Kawashima, Kanagawa, JP;
Shinnosuke Koshizuka, Kanagawa, JP;
Koichi Yamazaki, Kanagawa, JP;
Tatsuya Kubo, Kanagawa, JP;
Atsushi Nakamoto, Kanagawa, JP;
Nobuo Takami, Kanagawa, JP;
Kazunori Suzuki, Kanagawa, JP;
Naohiro Kawashima, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing device includes a developer bearer to carry, by rotation, developer to a developing range, a casing including a developer container to contain the developer and housing the developer bearer, a gap retainer adjacent to the developer container and downstream from the developing range in a rotation direction of the developer bearer, an opposing wall opposing an end face of the gap retainer in an axial direction of the developer bearer, a first seal disposed between the end face of the gap retainer and the opposing wall, and a contact portion disposed adjacent to an end portion of the gap retainer in the axial direction of the developer bearer. The gap retainer secures a predetermined gap between the developer bearer and the gap retainer. The contact portion contacts, via a second seal, the gap retainer in a direction intersecting the axial direction of the developer bearer.