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:
Oct. 08, 2013
Filed:
Nov. 08, 2006
Takayuki Sugimura, Yokohama, JP;
Kouta Kawano, Yokohama, JP;
Takuro Sugimoto, Yokohama, JP;
Hirotaka Tagawa, Yokohama, JP;
Takayuki Sugimura, Yokohama, JP;
Kouta Kawano, Yokohama, JP;
Takuro Sugimoto, Yokohama, JP;
Hirotaka Tagawa, Yokohama, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
There is a developing roller having a low compression permanent strain without contaminating a photosensitive drum and deteriorating toners. The developing rollercomprises a shaft, an elastic layerformed on an outer periphery of the shaftand a surface coating layerformed on an outer peripheral face of the elastic layer, in which the surface coating layercomprises a urethane resin formed by crosslinking a lactone-modified polyol with a polyisocyanate. The urethane resin is preferable to be formed by crosslinking the lactone-modified polyol with two or more kinds of polyisocyanates.