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:
Mar. 20, 2018
Filed:
May. 22, 2015
Yasunobu Shimizu, Kanagawa, JP;
Akira Azami, Kanagawa, JP;
Masaaki Yamada, Tokyo, JP;
Yoshiko Ogawa, Tokyo, JP;
Toshio Koike, Tokyo, JP;
Mutsuki Morinaga, Kanagawa, JP;
Yutaka Takahashi, Kanagawa, JP;
Keinosuke Kondoh, Kanagawa, JP;
Kentaro Mikuniya, Tokyo, JP;
Yoshiharu Kishi, Kanagawa, JP;
Yasunobu Shimizu, Kanagawa, JP;
Akira Azami, Kanagawa, JP;
Masaaki Yamada, Tokyo, JP;
Yoshiko Ogawa, Tokyo, JP;
Toshio Koike, Tokyo, JP;
Mutsuki Morinaga, Kanagawa, JP;
Yutaka Takahashi, Kanagawa, JP;
Keinosuke Kondoh, Kanagawa, JP;
Kentaro Mikuniya, Tokyo, JP;
Yoshiharu Kishi, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A developing device includes a developer bearer to carry, by rotation, developer including toner and magnetic carrier to a developing range facing a latent image bearer; a casing including a developer container and an opening to expose a part of the developer bearer disposed in the casing; an opposing face of the casing including a conductive material and opposing to a surface of the developer bearer downstream from the developing range in a direction of rotation of the developer bearer; a developing bias source to apply a developing bias to the developer bearer; and an insulation layer disposed on the opposing face of the casing. The opposing face is disposed across, from the developer bearer, a casing gap sized to allow the developer borne on the developer bearer to contact the opposing face.