| 摘要 |
PURPOSE:To improve transfer efficiency of toner, and to obtain stably sufficient picture images contg. no defective picture image such as afterimage, etc. by an image forming process requiring no cleaning by using a photosensitive body coated with an overcoating layer comprising a mixture of dispersed hydrophobic silica particles. CONSTITUTION:An electrophotographic sensitive body drum 1 is constituted by laminating successively a carrier generating layer 1b and a carrier transfer layer 1c on a cylindrical electroconductive base body 1a, and covering the carrier transfer layer 1c with an overcoating layer 1d comprising particles having small surface free energy dispersed in a transparent binder resin. Suitable material to be dispersed and mixed in the overcoating layer 1d having a small surface free energy and used in order to improve the fluidity of a developing agent is hydrophobic silica. Thus, ca.100% transfer efficiency of toner is attained, and sufficient picture images contg. no defect of picture quality is obtd. by an image forming process, requiring no cleaning process. |
