| 摘要 |
PURPOSE:To obtain an electrophotographic sensitive body having chargeability for both positive and negative charge, and improved chargeability and repeatability by incorporating a specified amt. of alpha-type titanyl phthalocyanine compsn. to a binder resin. CONSTITUTION:60-90wt.% alpha-type titanyl phthalocyanine, and 10-40wt.% metal-free phthalocyanine are contained in an alpha-type titanyl phthalocyanine compsn. to be used as a charge generating material. A photosensitive layer is constituted by dispersing the alpha-type titanyl phthalocyanine compsn. and a charge transfer material in a binder resin. In this photosensitive layer, 0.05-5pts. wt. alpha-type titanyl phthalocyanine compsn. is contained in 100pts.wt. binder resin. Thus, an electrophotographic sensitive body having composite dispersion type chargeability for both positive and negative charge, having also high electrifiability of the photosensitive body and high repeatability is obtd. |
