Patent ID: 6248490
Filing Date: 2001-06-19
Classification: G03G

Abstract:
An electrophotographic photosensitive member comprising an aluminum substrate and a photosensitive layer provided thereon:said substrate containing an aluminum element, an oxygen element and a titanium element, or an aluminum element, an oxygen element and a zirconium element, at its surface portion on the side of the photosensitive layer, said surface portion formed by chemical conversion without anodizing; andsaid photosensitive layer containing a chlorogallium phthalocyanine, a hydroxygallium phthalocyanine or an oxytitanium phthalocyanine having an intense peak at each of the Bragg's angles (2.theta..+-.0.2.degree.) shown in any one of the following groups a) to e) in Cuk.alpha.-characteristic X-ray diffraction:a) 9.0.degree., 14.2.degree., 23.9.degree. and 27.1.degree.,b) 9.5.degree., 9.7.degree., 15.0.degree., 24.1.degree. and 27.3.degree.,c) 9.3.degree., 10.6.degree., 13.2.degree., 15.1.degree. and 26.3.degree.,d) 7.6.degree., 10.2.degree., 22.5.degree., 25.3.degree. and 28.6.degree., ande) 7.1.degree., 10.4.degree., 24.8.degree. and 27.4.degree..