Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

A process cartridge comprising:

• an electrophotographic photosensitive member;
• and at least one unit selected from the group consisting of a charging unit, a developing unit, and a cleaning unit,
• the process cartridge integrally supporting the electrophotographic photosensitive member and the at least one unit, and being detachably attachable to a main body of an electrophotographic apparatus,
• wherein the electrophotographic photosensitive member comprises:
• a support,
• a charge generating layer, and
• a charge transporting layer in this order,
• wherein the charge transporting layer comprises:
• (α) a compound represented by a following formula (C-1), and
• (β) at least one selected from the group consisting of a compound represented by a following formula (C-2) and a compound represented by a following formula (C-3),
• wherein a content of the (β) in the charge transporting layer with respect to a total mass of the charge transporting layer is 250 to 610 mass ppm

An electrophotographic apparatus comprising:

• an electrophotographic photosensitive member,
• an exposing unit,
• a charging unit,
• a developing unit, and
• a transfer unit,
• wherein the electrophotographic photosensitive member comprises:
• a support,
• a charge generating layer, and
• a charge transporting layer in this order,
• wherein the charge transporting layer comprises:
• (α) a compound represented by a following formula (C-1), and
• (β) at least one selected from the group consisting of a compound represented by a following formula (C-2) and a compound represented by a following formula (C-3),
• wherein a content of the (β) in the charge transporting layer with respect to a total mass of the charge transporting layer is 250 to 610 mass ppm