| 摘要 |
PURPOSE:To obtain an electrophotographic sensitive body almost freed of residual potential by combining an electric charge generating layer containing a specified bisazo pigment with a charge transfer layer containing a benzidine derivative. CONSTITUTION:The electrophotographic sensitive body comprises the charge generating layer containing one of the bisazo pigments represented by formula I and the charge transfer layer containing one of the benzidine derivatives represented by formula II. In formulae I and II, A is an aromatic coupler component; one of R1 and R2 is H or the like and the other of them is alkyl or the like; R3 is H, alkyl, or the like; and each of R4 and R5 is H or like when R3 is H or the like, thus permitting the electrophotographic sensitive body to be superior in chargeability, rapid in decay of potential due to exposure to light, high in sensitivity, small in dependence of the potential decay on the electric field, easy to cause photodecay, even when low in potential, small in trailing of potential, and almost freed of residual potential. |
