Patent ID: 7060404

Claim:
A photoreceptor comprising: an electroconductive substrate; and a photosensitive layer located overlying the electroconductive substrate and comprising a charge generation material, a charge transport material and an inorganic filler such that the photosensitive layer is a single mixture photosensitive layer that comprises the charge generation material, the charge transport material and the inorganic filler and the inorganic filler has a gradient-like concentration with a highest concentration at a surface side of the photosensitive layer farthest from said electroconductive substrate and a lowest concentration at a bottom side of the photosensitive layer near the electroconductive substrate, wherein an outermost layer of the photoreceptor has a water vapor permeability not greater than 50 g·m −2 ·24 h −1 , wherein the photosensitive layer is the outermost layer, and wherein the single mixture photosensitive layer has a thickness of from 5 μm to 50 μm.