CHARGING ROLLER, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC DEVICE

摘要

A charging roller having stable charging performance and capable of suppressing generation of "fog" in an electrophotographic image.  Specifically disclosed is a charging roller for contact charging, which comprises a conductive support and a surface layer.  The surface layer contains a binder, resin particles containing carbon black and dispersed in the binder, and graphite particles dispersed in the binder.  The surface of the surface layer has projected portions formed because of the resin particles and projected portions formed because of the graphite particles.  Those projected portions have a specific relation.