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. 19, 2013
Filed:
Jul. 14, 2008
Takayuki Sugimura, Yokohama, JP;
Kota Kawano, Yokohama, JP;
Hirotaka Tagawa, Yokohama, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A developing roller which shows an excellent environmental performance and is free from occurrence of toner filming and toner leakage is provided. The developing rollercomprises a shaft, an elastic layersupported on the outer periphery of the shaft, and a single surface layerformed on the outer peripheral surface of the elastic layer. The elastic layercomprises a polyurethane foam and the surface layercomprises an aqueous polyurethane resin as a major component and further a water-dispersible silica and/or an aqueous silicone acrylic graft polymer. As the aqueous polyurethane resin, a UV curing resin may be preferably used.