Patent ID: 7556901

Claim:
An electrophotographic photosensitive member which comprises an electrically conductive support and a photosensitive layer provided thereon, wherein; the electrophotographic photosensitive member is cylindrical or belt-shaped and has a surface having a plurality of depressed portions which are independent from one another; the depressed portions each have i) a surface opening having a major-axis diameter Rpc of from 0.1 μm or more to 10 μm or less and a minor-axis diameter Lpc of from 0.1 μm or more to 10 μm or less and ii) a distance Rdv between the deepest part of each depressed portion and the opening thereof, of from 0.1 μm or more to 10 μm or less; and where the surface of the electrophotographic photosensitive member is equally divided into 4 regions in the rotational direction of the electrophotographic photosensitive member, which are then equally divided into 25 regions in the direction falling at right angles with the rotational direction of the photosensitive member, to obtain 100-spot regions A in total, and, in each of the regions A, square regions B of 50 μm each per side one side of which is parallel to the rotational direction of the photosensitive member are provided and each of the regions B is equally divided into 500 zones by 499 straight lines parallel to the rotational direction of the photosensitive member, from 400 lines or more to 499 lines or less among the 499 lines pass through the depressed portions in each of the regions B.