| 摘要 |
PURPOSE:To enhance photosensitivity and durability by forming a photosensitive layer composed essentially of ternary components of a perylene pigment, a photoconductive polymer, and a specified electron receptor. CONSTITUTION:The photosensitive layer 2 of an electrophotographic sensitive body contains as essential ternary components of a perylene pigment 3 represented by the right-hand formula (R1, R2 are each H, optionally substd. alkyl, aryl, alkylaryl, or amino.), a photoconductive polymer 4a, and an electron receptor 4b, such as benzoquinone, anthraqunone, or their deriv. The pigment 3 is dispersed into an electrostatic charge transfer medium 4 composed essentially of the polymer 4a and the receptor 4b to form the layer 2 on a conductive substrate 1, thus forming the electrophotographic sensitive body. A preferable proportion of the ternary components is as follows; 100pts.wt. polymer 4a, 0.1- 50pts.wt. perylene 3, and 0.01-30pts.wt. receptor 4b. A preferable thickness of the layer 2 is 3-50mum. The receptor 4b desensitizes the pigment 3, and does not give optical sensitization effect on the polymer 4a, but remarkably good photosensitivity is obtained by dispersing or dissolving all the ternary components 3, 4a, 4b into the same photosensitive layer. |
