Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus

摘要

Provided is an electrophotographic photosensitive member in which a surface of the electrophotographic photosensitive member has: a plurality of specific depressed portions; and a plurality of specific line grooves formed at portions other than the specific depressed portions, and in which when a square region 500 μm on a side is arranged at an arbitrary position of the surface of the electrophotographic photosensitive member, an area of the plurality of depressed portions in the square region 500 μm on a side is 95,000 μm2 or more and 180,000 μm2 or less.

主权项

1. An electrophotographic photosensitive member, comprising:
a cylindrical support; and a photosensitive layer formed on the support, wherein a surface of the electrophotographic photosensitive member has:
a plurality of depressed portions each having a depth of 0.5 μm or more and 5 μm or less and a longest diameter of an opening of 20 μm or more and 80 μm or less; anda plurality of line grooves formed at portions other than the plurality of depressed portions, the plurality of line grooves each having a width in a generatrix line direction of the electrophotographic photosensitive member of 0.5 μm or more and 15 μm or less and forming an angle of 80° or more and 100° or less with respect to the generatrix line direction, and wherein when a square region 500 μm on a side is arranged at an arbitrary position of the surface of the electrophotographic photosensitive member, an area of the plurality of depressed portions in the square region 500 μm on a side is 95,000 μm2 or more and 180,000 μm2 or less.