| 摘要 |
PURPOSE:To improve the sensitivity and repetitive characteristic of a photosensitive body by providing a photosensitive layer contg. specific disazo compds. CONSTITUTION:One on more than one kinds of the compds. expressed by formula I are incorporated as a charge generating material into the photosensitive layer. In formula I, -D- denotes any group among formulas II-IV; Cp denotes a residual coupler group (e.g.: the group expressed by formula V, Y1-Y18 in formulas II-IV denote H, cyano, carbamoyl, etc.; A1, A2 denote H, cyano, aralkyl, etc.; Z in formula V denotes a residual group forming a polycyclic arom. ring or heterocycle; X1 denotes OR1, NR2R3 (R1-R3 denote H, alkyl, etc.). The formation of the photosensitive layer into the constitution laminated with the charge generating layer and charge transfer layer is also possible and the constitution thereof in a single layer is possible as well. |
