Patent ID: 8980423
Filing Date: 2015-03-17
Classification: G03G,Y10T

Abstract:
1. A charging member comprising an electroconductive substrate, an electroconductive elastic layer formed thereon, and an electroconductive surface layer, wherein said elastic layer comprises a polymer having a unit derived from ethylene oxide, wherein said surface layer comprises a binder resin and graphitized particles dispersed in said binder resin, wherein said binder resin comprises a resin having a urethane linkage in its molecule, wherein said graphitized particles have (i) a graphite (002) plane lattice spacing of from 0.3362 nm or more to 0.3449 nm or less and (ii) an average particle diameter of 1 μm to 8 μm, wherein said resin having in its molecule a urethane linkage is a graft polymer having said urethane linkage in a side chain thereof, wherein said urethane linkage in said side chain is intercalated into a graphitized particle of said graphitized particles, wherein said resin has a backbone chain formed of an acrylic resin or a styrene resin, a part where said backbone chain is linked with said side chain is an ester linkage, and an alkylene group having 2 or more carbon atoms is made present between said ester linkage and said urethane linkage in said side chain.