| 摘要 |
PURPOSE:To enhance the sensitivity and endurance by adding a specified bisazo pigment to the photosensitive layer. CONSTITUTION:To a charge generating layer is added a bisazo pigment represented by formulaI(where A is an optinally substituted heter-cyclic group such as imidazoline, imidazole, benzimidazole, naphtho-imidazole, oxazoline, oxazole, benzoxazole, selenazole, benzoselenazole, indoline, indole, pyridie, quinonline, or furan, n is 0, 1 or 2, each of Ph1 and Ph2 is optionally substituted arylene, and Cp is a coupler residue such as a residue represented by formula II, wherein X is a group of atoms required to form a polycyclic aromatic hydrocarbon ring or a heterocyclic ring, Y is H, -COOR3 or the like, and R3 is H, alkyl or aryl). |
