Electrophotographic photosensitive member, process cartridge and electrophotographic apparatus having the electrophotographic photosensitive member

摘要

An electrophotographic photosensitive member and a process cartridge and an electrophotographic apparatus. The process cartridge and the electrophotographic apparatus both contain the electrophotographic photosensitive member. The electrophotographic photosensitive member constitutes a conductive substrate and a photosensitive layer on the substrate. The photosensitive layer contains an azo pigment of formula (1), formula (2), formula (3), formula (4) or formula (5), as shown below: <IMAGE> (1) <IMAGE> (2) <IMAGE> (3) <IMAGE> (4)