Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

A process cartridge for electrophotography 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 for electrophotography 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 having a support and a photosensitive layer on the support;
• the photosensitive layer comprises
• (α) a compound represented by a following formula (1), and
• (β) at least one selected from the group consisting of a compound represented by a following formula (2) and a compound represented by a following formula (3), wherein a content of the (β) with respect to a content of the (α) is 50 to 850 mass ppm in the photo sensitive layer.

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 having a support and a photosensitive layer on the support;
• the photosensitive layer comprises
• (α) a compound represented by a following formula (1), and
• (β) at least one selected from the group consisting of a compound represented by a following formula (2) and a compound represented by a following formula (3), wherein a content of the (β) with respect to a content of the (α) is 50 to 850 mass ppm in the photosensitive layer.