摘要 |
PURPOSE:To obtain an electrophotographic sensitive body stable against heat and light, superior in carrier generating ability, high in sensitivity, low in residual potential, and superior in durability by incorporating a specified tetrakisazo compd. in a photosensitive layer formed on a conductive substrate. CONSTITUTION:A photosensitive layer formed on a conductive substrate 1 consists of the laminate of a carrier generating layer 2 composed essentially of a tetrakisazo compd. represented by formula I and a carrier transfer layer 3 composed essentially of a carrier transfer material. An interlayer 5 may be interposed between the substrate 1 and the layer 4. In formula I , X1-X4 are each H, halogen, 1-4C alkyl, alkoxy, or the like; Y1-Y4 are each H or cyano; Ar is phenylene or naphthylene; A is a group of formula II; Y is carbamoyl or sulfamoyl; R4, R5 are each H, 1-4C alkyl, heterocyclic, or the like; and Z is a benzene or naphthalene ring, or the like. |