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:
Dec. 27, 2016
Filed:
Dec. 29, 2015
Hiroaki Okamoto, Kanagawa, JP;
Tadashi Ogawa, Tokyo, JP;
Hiroyuki Mabuchi, Kanagawa, JP;
Yukio Otome, Ibaraki, JP;
Junichi Terai, Kanagawa, JP;
Hideki Kimura, Kanagawa, JP;
Hiroshi Kikuchi, Kanagawa, JP;
Hiroaki Okamoto, Kanagawa, JP;
Tadashi Ogawa, Tokyo, JP;
Hiroyuki Mabuchi, Kanagawa, JP;
Yukio Otome, Ibaraki, JP;
Junichi Terai, Kanagawa, JP;
Hideki Kimura, Kanagawa, JP;
Hiroshi Kikuchi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A developing device to develop a latent image on a rotatable image bearer includes an upstream developing roller disposed opposite the image bearer at a first developing position, and a downstream developing roller disposed adjacent to and downstream from the upstream developing roller in a direction of rotation of the image bearer, disposed opposite the image bearer at a second developing position. Each of the upstream developing roller and the downstream developing roller has a most approachable surface that approaches closest to the image bearer and a most withdrawn surface that withdraws farthest from the image bearer. In a state in which a reference surface point of the image bearer is disposed opposite the most approachable surface of the upstream developing roller at the first developing position, the reference surface point opposes the most withdrawn surface of the downstream developing roller at the second developing position.