| 摘要 |
PURPOSE:To improve the uniformity of film formation and the uniformity of electrical, optical and photoconductive characteristics by using an aluminum alloy which consists of the aluminum delineated by the grain boundaries and is adjusted to max. <=300mum size of the crystal grains as a surface treated metallic body to be used for a substrate of a photoconductive member. CONSTITUTION:The substrate consists of the metallic body 1 formed with ruggedness by plural spherical trace depressions 4 on the surface. The body 1 consists essentially of aluminum and the size of the crystal grains consisting essentially of the aluminum delineated by the grain boundaries is max. <=300mum. A port hole pipe or mandrel pipe obtd. by ordinary extrusion of an aluminum alloy, etc. is drawn further and the drawn pipe obtd. in such a manner is subjected to a treatment such as heat treatment or tempering if necessary, then the substrate is formed from such cylinder in the case of using the body 1 as the baser for the photoconductive member such as electrophotographic sensitive material.
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