| 摘要 |
PURPOSE:To improve the electrostatic chargeability and the photosensitivity of the subject body, and to stabilize the potential of the exposed and the nonexposed parts of the body even at the time of copying large volumes of sheets by incorporating a specified compd. in a charge generating layer. CONSTITUTION:The charge generating layer 1 of a laminated type sensitive body is formed by applying a dispersion dispersed a charge generating pigment (such as a squarylium type pigment) having positive hole transferring property and a dicyanovinyl compd. shown by formula I in a binding resin, on a substrate body. In the formula, R1-R4 are each hydrogen atom or alkyl group, etc. The concrete exam ple of the compd. shown by the formula is exemplified by a compd. shown by formula II, etc. The 1st toner image is formed by being subjected the sensitive body to a negative electrification, followed by exposing a 1st picture to obtain a latent image of the 1st picture, and then being stuck a negative charge charged toner to the low charged part of the obtd. latent image. Next, the 2nd toner image is formed by expos ing a 2nd picture to obtain the latent image of the 2nd picture, and being stuck a positive charged toner to the high voltage part of the obtd. latent image. The two colored picture is formed by arranging the polarities of both toner images to one polarity, followed by being transferred the toner image on a transferring material. |
