| 摘要 |
PURPOSE:To improve both the electric charge injection preventiveness of an alumite layer and the adhesiveness thereof to an electric charge generating layer by providing the alumite layer on an Al substrate and using the alumite layer subjected to a sealing treatment. CONSTITUTION:The charge generating layer consisting of a resin dispersed liquid of an org. pigment and an electric charge transfer layer are formed on an Al base. The alumite layer sealed by a nickel acetate method is formed on said base. For example, an electrolytic treatment is made by using the Al base having a cylindrical shape or the like as an anode and sulfuric acid or the like as an electrolyte; thereafter, the base is subjected to the sealing treatment, more preferably to the partial sealing treatment by an aq. nickel acetate soln. to seal only the surface. The degree of sealing is adjusted by the treating time, the concn. of the nickel acetate, the temp. of the soln., etc. Inflow of electrons by Ni, etc., entering the alumite layer is then smoothly effected, while the injection into the holes themselves is prevented by the barrier layer of the alumite layer and, therefore, the good current rectifiability is obtd. |
