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:
Apr. 19, 2016
Filed:
Jul. 09, 2009
Satoru Kusano, Yokohama, JP;
Junichiro Sato, Yokohama, JP;
Katsuya Seki, Yokohama, JP;
Masaru Otsuka, Yokohama, JP;
Youhei Takeda, Yokohama, JP;
Satoru Kusano, Yokohama, JP;
Junichiro Sato, Yokohama, JP;
Katsuya Seki, Yokohama, JP;
Masaru Otsuka, Yokohama, JP;
Youhei Takeda, Yokohama, JP;
BRIDGESTONE CORPORATION, Tokyo, JP;
Abstract
Provided are charge-controlled polyurethane foam by which the influence of electrification by friction between toner on the surface layer of a toner-conveying roller and a developing roller can be sufficiently prevented and by which a good image can be stably obtained with a low cost, and a toner-conveying roller using the same. The charge-controlled polyurethane foam is the one wherein the surface layer of the polyurethane foam is impregnated with a charge control agent which is on the negative side or on the positive side in the triboelectric series with respect to substrate polyurethane foam. The toner-conveying roller is the one which supports the charge-controlled polyurethane foam on the periphery of the axis of the roller.