ELECTRIC CONDUCTIVE MEMBER, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an electric conductive member which is small in electric resistance value variation and resistance value fluctuation in a middle resistance region (1×104-1×1011Ω.cm) and excellent in manufacturing stability even if electricity is continuously turned on, and to provide a process cartridge and an electrophotographic device, which use the member. SOLUTION: The electric conductive member arranged in contact with an electrophotographic photoreceptor and applied with voltage has a supporting member and a conductive film layer thereon. The conductive film layer contains a 1st carbon black whose DBP oil adsorption is 300-500 cm3/100 g and a 2nd carbon black whose oil absorption is <=250 cm3/100 g and pH is <=5. The process cartridge and the electrophotographic device have the electric conductive member.