| 摘要 |
PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor which has high durability and no accumulation of residual potential in repeated electrophotgraphic processes and which can maintain high image quality without causing bleeding in an image or image defects such as fog and ghost. SOLUTION: This electrophotographic photoreceptor has at least a photosensitive layer and a surface protective layer in this order on a conductive supporting body, and the photosensitive layer contains oxytitanium phthalocyanine as a charge producing material having the following characteristics. The CuKa specific X-ray diffraction pattern of the oxytitanium phthalocyanine shows strong peals at 9.5 deg., 24.1 deg. and 27.3 deg. diffraction angle (2θ±0.2 deg.) or strong peaks at 9.3 deg., 10.6 deg., 13.2 deg., 15.1 deg., 15.7 deg., 16.1 deg., 20.8 deg., 23.3 deg., 26.3 deg. and 27.1 deg. diffraction angle (2θ±0.2 deg.).
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