Invention Grant
US08600273B2 Developing roller, process cartridge, and electrophotographic apparatus 有权
显影辊,处理盒和电子照相设备

Developing roller, process cartridge, and electrophotographic apparatus
Abstract:
A developing roller including a mandrel, an elastic layer provided on the mandrel and containing a cured material of an addition curable-type dimethyl silicone rubber, and a surface layer containing a urethane resin that covers the circumferential surface of the elastic layer. The urethane resin has a structure represented by the following formula (1), and one or both structures selected from a structure represented by the following formula (2) and a structure represented by the following formula (3) between two adjacent urethane linkages.
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