| 摘要 |
PURPOSE:To enhance sensitivity and durability by incorporating a combination of a specified pigment and a binder resin in a photosensitive layer. CONSTITUTION:The electrophotographic sensitive body has the photosensitive layer formed on a conductive substrate, and the photosensitive layer contains at least one of the disazo pigments represented by formula (1) (A is a coupler moiety having a phenolic OH group), and a polycarbonate Z resin represented by formula (2) (n is an integer of 50-5,000), thus permitting the photosensitive layer to be high in sensitivity and small in residual potential and stable in the potential in the light parts and prevented from rise of said potential at the time of repeated cycles of electrification and exposure. The presence of the polycarbonate Z resin on the surface permits the photosensitive layer to be high in surface hardness, superior in lubricity, resistant to scratches, and enhanced in mechanical durability. |
