Invention Grant
US08774677B2 Developing member, process cartridge and electrophotographic image forming apparatus 有权
显影构件,处理盒和电子照相成像装置

Developing member, process cartridge and electrophotographic image forming apparatus
Abstract:
The present invention provides a developing member onto which a toner or the like is hard to fuse and with which toner conveying performance is unlikely to vary even through long-term usage. The developing member includes a substrate and a surface layer, the surface layer contains a polyurethane resin working as a binder resin and polyurethane resin particles dispersed in the binder resin, and the polyurethane resin working as the binder resin has, between two adjacent urethane bonds, a structure represented by a structural formula (1) and one or both of structures represented by structural formulas (2) and (3), and further has, between two adjacent urethane bonds, a structure represented by a structural formula (4).
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