| 摘要 |
PURPOSE:To reduce dark decay of charged potential and to prevent charging characteristics from being affected by change of an external environmental atmosphere by forming an aluminum substrate having an anodized film prepared by anodic oxidation using a boric acid electrolytic solution and an amorphous silicon photosensitive layer. CONSTITUTION:The anodized film 2 is prepared on the aluminum substrate 1 by cutting and mirror finishing the surface of the aluminum substrate 1, forming it into a desired shape, cleaning it in an organic solvent or a flon type solvent with ultrasonic waves, likewise cleaning it in pure water, immersing in the boric acid electrolytic solution this substrate as the anode and a stainless steel plate or an aluminum plate as a cathode apart from each other by a prescribed distance, and executing the anode oxidation. Then, the amorphous silicon photosensitive layer 3 is formed on the film 2 of the substrate 1 by the vapor deposition method or the like, thus permitting the obtained electrophotographic sensitive body to be small in dark decay, extremely high in chargeability, and not affected on the charging characteristics by change of the external environmental atmosphere. |
