Electrophotographic photosensitive member, and electrophotographic apparatus and device unit employing the same

摘要

The present invention relates to an electrophotographic photosensitive member comprising an electroconductive support and a photosensitive layer formed thereon: the surface layer of the electrophotographic photosensitive member containing a first copolymer of a first construction unit represented by Formula (1) and a second construction unit represented by Formula (2), and a second copolymer of a third construction unit represented by Formula (3) and a fourth construction unit represented by Formula (4): <IMAGE> (1) <IMAGE> (2) <IMAGE>