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. 09, 2016
Masakazu Imai, Kanagawa, JP;
Masaharu Furuya, Kanagawa, JP;
Tsutomu Kato, Kanagawa, JP;
Katsuhito Haruno, Kanagawa, JP;
Osamu Ichihashi, Kanagawa, JP;
Tatsuya Ohsugi, Kanagawa, JP;
Masakazu Imai, Kanagawa, JP;
Masaharu Furuya, Kanagawa, JP;
Tsutomu Kato, Kanagawa, JP;
Katsuhito Haruno, Kanagawa, JP;
Osamu Ichihashi, Kanagawa, JP;
Tatsuya Ohsugi, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A roller member includes a cored bar, an elastic layer, a first high resistance member, and a second high resistance member. The elastic layer is disposed on an outer circumferential face of the cored bar. The cored bar has a projecting portion projecting beyond a range in which the elastic layer is disposed, toward an axial end of the cored bar. The first high resistance member is made of a high-resistance material having a higher electrical resistance than an electrical resistance of the cored bar. The first high resistance member is fitted to the projecting portion. The second high resistance member is made of a high-resistance material having a higher electrical resistance than an electrical resistance of the cored bar. The second high resistance member fills a space between the first high resistance member and the elastic layer.