| 摘要 |
PURPOSE:To obtain a 2-color photoreceptor persisting high contrast even in successive copying, by forming the first photoconductive layer, and the second photoconductive layer composed of a charge generating layer and a charge transfer layer contg. a charge transfer complex having <=1.7eV light absorption electron energy value, on a substrate. CONSTITUTION:A 2-color photoreceptor consists of the second photoconductive layer 1 composed of a charge transfer layer 4 and a charge generating layer 5, the first photoconductive layer 2, and a conductive substrate 3. A charge transfer substance used for the charge transfer layer 4 of the layer 1, when it forms a charge transfer complex, has a light absorption electron energy value (ionization potential of a donor type charge transfer agent) having interrelationship with residual negative charge in the layer 1 after successive copying, and when the value is <=1.7eV, residual charge is not almost accumulated, and fog and deterioration of contrast are prevented. |
