| 摘要 |
PURPOSE:To enhance sensitivity and durability by incorporating a specified bisazo compound in a photosensitive layer. CONSTITUTION:The photosensitive layer formed on a conductive substrate contains as a carrier generating material one of the bisazo compounds represented by formula I in which A is optionally substituted phenylene or naphthylene, and X is -O- or -NR-, and R is H, alkyl, or the like. This compound can be synthesized by coupling the coupler component of formula II or III with the diamine tetrazonium salt. This photosensitive layer may be a laminate type composed of a carrier generating layer and a carrier transfer layer or a single layer type. The use of the compound of formula I permits the obtained photosensitive body to be high in sensitivity, good in color sensitivity, and superior in durability. |
