| 摘要 |
PURPOSE:To improve fluctuation of light part potential and dark part potential of an electrophotographic sensitive body when repetitive charge and exposure are executed, by incorporating a specified diamino benzanthrene compd. into a photosensitive layer. CONSTITUTION:A diamino benzanthrene compd. expressed by the formula I is incorporated into a photosensitive layer of an electroconductive base. In the formula I, each R1-R4 is a (substituted) alkyl group, aryl group, or aralkyl group; each R5 and R6 is a halogen atom, alkyl group, alkoxy group, etc.; as a preferred specific example, a diamino benzanthrene compd. expressed by the formula I is used as a charge transfer material of an electrophotographic sensitive body having a photosensitive layer function-separated into a charge generating layer and a charge transfer layer. By this constitution, fluctuation of light part potential and dark part potential of an electrophotographic sensitive body in a stage of forming continuous picture image by carrying out repetitive charge and exposure, are kept at small degree. |
