| 摘要 |
PURPOSE:To improve wettability of a charge generating layer, and to enhance injectability of charge carriers and sensitivity of a photoreceptor, by dispersing a pigment into a binder resin together with a surfactant. CONSTITUTION:A substrate is made of metal, paper, plastics, or the like formed into a prescribed shape, and on this substrate a charge transfer layer is formed by coating. To form a charge generating layer, a charge generating pigment, such as phthalocyanine, bisbenzoimidazole, or quinacridone, is dispersed into a binder resin, and at that time, a surfactant is added during the dispersion, characterizing this invention. As said surfactant, nonionic, cationic, anionic, and amphoteric types are embodied, but the nonionic type surfactant is most suitable considering electrical characteristics. |
