| abstract |
(57) [Problem] To provide a long-life electrophotographic photosensitive member which is excellent not only in abrasion resistance but also in gas resistance and free from image deterioration due to repeated use. A contains at least a charge transport polymer material as a photosensitive layer on an electroconductive substrate, and a water vapor permeability of the photosensitive layer is equal to or is 200g · m ~ 2 · 24h ~ 1 or less sensitive Body. |