| 摘要 |
PURPOSE:To obtain an electrophotographic photoreceptor excellent in exposure sensitivity characteristics and spectral sensitivity and good in deterioration resistance in repeated use for a long time, by using a quasi-noncrystalline titanium phthalocyanine compound having a specified X ray diffraction peak in its X-ray diffraction pattern as a charge generator. CONSTITUTION:This titanium phthalocyanine compound has broad X-ray diffraction peaks at Bragg angles (2theta+ or -0.2 deg.) of 7.3 deg., 15.2 deg. and 26.2 deg. in its X-ray diffraction pattern and is quasi-noncrystalline. By using said compound as the charge generator in an electrophotographic photoreceptor formed by applying a charge generator and a charge transfer agent to a conductive support, it is possible to obtain an electrophotographic photoreceptor of a high sensitivity and good stability in repeated use. |
