Phthalocyanine mixed crystal, production method thereof,and electrophotographic photoreceptor

摘要

The electrophotgraphic photoreceptor is composed of an electrically conductive substrate having formed thereon a photosensitive layer containing a phthalocyanine mixed crystal comprising titanyl phthalocyanine and hydrogen phthalocyanine, wherein the phthalocyanine mixed crystal has peaks at 6.8 DEG , 7.4 DEG , 15.0 DEG , 24.7 DEG , 26.2 DEG , and 27.2 DEG of the Bragg angle (2 theta +/-0.2 DEG ) in the X-ray diffraction spectrum and having a ratio of the peak intensity at 27.2 DEG to the peak intensity at 6.8 DEG of 1 or more. The electrophotographic photoreceptor can output the output signals as digital signals even when the input light is a digital light or an analog light and thus the electrophotographic photoreceptor can be used for an electrophotograph of a digital recording system and even when the photorecetor is used as a conventional photoreceptor for PPC (analog light input), high-quality images having sharp edges can be obtained.