| 摘要 |
PURPOSE:To obtain a photoreceptor high in separation potential and superior in durability in a 2-color copying method, by forming plural interlayers composed of one capable of beong injected by charge carriers from a first photoconductive layer and one for interrupt passage of the carriers toward a second photoconductive layer. CONSTITUTION:An interlayer (M1 layer) in direct contact with a first photoconductive layer on a substrate side can be injected by charge carriers reverse in polarity to primary charging from the first photoconductive layer in primary charging. When the primary charging is negative in polarity, positive charge is injected to the interlayer from the first photoconductive layer. For the material for this interlayer, a resin low in volume resistivity, a resin contg. additives of pigment or dye low in resistivity, etc. are usable. An interlayer (M2 layer) formed on the M1 interlayer is not only the layer to which charge is injected from the M1 layer at the time of primary charging, but also the layer that interrupts passage of the charge toward a second photoconductive layer, when the interlayer is composed of 2 layers. For the M2 layer, said binder resin can be used. |
