发明授权
US08401444B2 Developing roller comprising surface layer containing water-dispersible silica and/or aqueous silicone acrylic graft polymer 有权
显影辊包括含有水分散性二氧化硅和/或含水硅氧烷丙烯酸接枝聚合物的表面层

Developing roller comprising surface layer containing water-dispersible silica and/or aqueous silicone acrylic graft polymer
摘要:
A developing roller which shows an excellent environmental performance and is free from occurrence of toner filming and toner leakage is provided. The developing roller 10 comprises a shaft 1, an elastic layer 2 supported on the outer periphery of the shaft 1, and a single surface layer 3 formed on the outer peripheral surface of the elastic layer 2. The elastic layer 2 comprises a polyurethane foam and the surface layer 3 comprises 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.
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