ELECTROPHOTOGRAPHIC PHOTORECEPTOR, PROCESS CARTRIDGE, AND ELECTROPHOTOGRAPHIC DEVICE

摘要

Provided is an electrophotographic photosensitive member having excellent cleaning performance, and a process cartridge and an electrophotographic apparatus, each including the electrophotographic photosensitive member. The peripheral surface of the electrophotographic photosensitive member has a plurality of flat portions having a width e (µm) that satisfies the relationship 0.1 ‰¤ e ‰¤ 25 and a plurality of groove portions having a width w (µm) that satisfies the relationship 0.1 ‰¤ w ‰¤ 25 and a depth d (µm) that satisfies the relationship 0.1 ‰¤ d ‰¤ 3.0, the flat portions and the groove portions being alternately formed at an angle ¸ (°) that satisfies the relationship 80 ‰¤ ¸ ‰¤ 100 with respect to the axial direction of the electrophotographic photosensitive member. The sum e sum (µm) of the widths e of the flat portions per each width of 100 µm in the axial direction of the peripheral surface satisfies the relationship 5 ‰¤ e sum ‰¤ 75, and e Ã/ e Av satisfies the relationship e à /e Av ‰¤ 0.46, where e Av (µm) is the average value of the widths e of the flat portions, and e 6 is the standard deviation thereof.