| 摘要 |
PURPOSE:To obtain an electrophotographic sensitive body having superior electrophotographic characteristics, high distinctness and superior gradation of picture, by adopting metal free phthalocyanine particles as charge generating material on an electroconductive base body. CONSTITUTION:The title electrophotographic sensitive material contains metal free phthalocyanine particles having either one crystal form among tau-, tau'-, eta-, and eta'-type, having >=20m<2>/g, pref. >=30m<2>/g BET specific surface area, <=0.35mum minor axial size and/or <=1mum major axial size of the particles, on an electroconductive base body. It is also characterized by that an average particle size of the metal free phthalocyanine particles is <=0.20mum and that a cumulative distribution of weight of particles having <=0.20mum average particle size of particles is >=50% in the number of the particles. Thus, an electrophotographic sensitive body having high sensitivity for a long period, stable repeatability of characteristics, and providing picture having superior distinctness and superior gradation, is obtd. |
