Production of photoreceptor for electrophotography

Abstract

Abstract PURPOSE:To obtain superior copied images having no developing irregularity by removing the natural oxide film on the surface of Al backing the immersing the same immediately in water of specific resistance above specific values and temp. above specific values thereby forming an uniform and smooth surface. CONSTITUTION:After the surface of the Al backing for an electrophotographic photoreceptor is polished and is cleaned with heated perchloroethylene, it is rinsed and is alkali-etched to remove natural oxide films, after which it is immediately immersed in the water of >=10<6>OMEGA.cm specific resistance and having less metallic ions such as Fe<2+>, Mg<2+>, Ca<2+> or the like which is heated at >=60 deg.C, whereby a boehmite type oxide film is formed uniformly on the Al surface. A photosensitive layer is formed on said film by vapor deposition of, for example, As2Se3. The smooth photoreceptor having no >=50mu projections on the surface is obtained in the above-mentioned way. Such photoreceptor has good cleaning performance and provides superior copied images.

Inventors

• 👤 Yukio Ide
• 👤 由紀雄 井手
• 👤 Itaru Fujimura
• 👤 藤村　格
• 👤 Koichi Ooshima
• 👤 大嶋　孝一
• 👤 Shigeto Kojima
• 👤 成人 小島

Bibliographic Details