| 摘要 |
PURPOSE:To obtain an electrophotographic receptor high in sensitivity and durability, by using a specified disazo pigment especially for a charge generating layer. CONSTITUTION:A disazo pigment represented by the formula is contained especially in the charge generating layer of a phtoreceptor consisting of at least 3 layer of a conductive later, a charge generating layer, and a charge transfer layer, thus permitting the obtained photoreceptor to be high in sensitivity and durability and able to form a copy faithful to an original. In the formula, R is a straight chain alkyl; X is a residue forming a naphthalene, anthracene, carbazole, benzocarbazole, or benzofuran ring by condensing with a benzene ring, and it may be substituted by a group other than OH and CONHR. |
