Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

A process cartridge comprising:

• an electrophotographic photosensitive member;
• and
• at least one device selected from the group consisting of a charging device, an exposure device, a developing device, and a cleaning device, the process cartridge integrally supporting the electrophotographic photosensitive member and the at least one device and being attachable to and detachable from a main body of an electrophotographic apparatus,
• wherein the electrophotographic photosensitive member includes a support and a photosensitive layer,
• the photosensitive layer contains a charge generation material, a binder resin, and a hole transport material,
• the binder resin contains a polyester resin having a structural unit represented by formula (P-1) and a structural unit represented by formula (P-2), and
• the hole transport material includes a compound represented by formula (3) and a compound represented by formula (4):
• in formula (3), m and n each independently represent an integer of 0, 1, or 2,

An electrophotographic apparatus comprising:

• an electrophotographic photosensitive member;
• a charging device;
• an exposure device;
• a developing device;
• and
• a transfer device,
• wherein the electrophotographic photosensitive member includes a support and a photosensitive layer,
• the photosensitive layer contains a charge generation material, a binder resin, and a hole transport material,
• the binder resin contains a polyester resin having a structural unit represented by formula (P-1) and a structural unit represented by formula (P-2), and
• the hole transport material includes a compound represented by formula (3) and a compound represented by formula (4):
• in formula (3), m and n each independently represent an integer of 0, 1, or 2,