Abstract: The object of the present invention is to provide an electrophotography photosensitive body substrate, photosensitive body, and electrophotography device used in a contact charging process that can prevent the occurrence of minor insulation damage of around diameter 0.1-0.5 mm. In an electrophotography photosensitive body substrate having a sealed aluminum anodic oxidation film on its surface, the anodic oxidation film is sealed by a sealing agent in which an anion surface active agent is beneficially added.

Abstract: The object of the present invention is to provide an electrophotography photosensitive body substrate, photosensitive body, and electrophotography device used in a contact charging process that can prevent the occurrence of minor insulation damage of around diameter 0.1-0.5 mm.

Abstract: An electrophotographic photoconductor includes an electrically conductive substrate in the form of a cylindrical tube, the substrate having an outer surface roughened by dry-blasting to a maximum surface roughness of about 5 .mu.m or less, and a photoconductive layer on the substrate. Preferably, the substrate is aluminum or an aluminum alloy and has an inner diameter and a thickness related to each other in a ratio of inner diameter to thickness of 75 or less. The substrate preferably has not been preliminarily finished by cutting. Preferably, the electrophotographic photoconductor comprises an oxide film between the substrate and the photoconductive layer, the oxide film covering 75% or more of the outer surface of the substrate. In a preferred embodiment, the electrophotographic photoconductor further comprises an undercoating layer between the oxide film and the photoconductive layer, the undercoating layer composed substantially of an organic resin and having a thickness of about 5 .mu.m or less.