| 摘要 |
The present invention relates to a titanylphthalocyanine represented by the formula (1): comprising a polymorph having a peak at a Bragg angle (2theta±0.2°) in X-ray diffraction spectrum with CuK alpha-ray: 9.0°, 9.6°, 14.1°, 14.9°, 17.9°, 18.3°, 23.4°, 24.5° and 27.2°; and 1.3<Ir1<1.8; 1.0<Ir2; 1.3<Ir3<2.0; and 0.9<Ir4<1.1 wherein Ir1 is a ratio (9.6°/9.0°) of an intensity of the peak at Bragg angle of 9.6° to an intensity of the peak at Bragg angle of 9.0°; Ir2 is a ratio (14.1°/14.9°) of an intensity of the peak at Bragg angle of 14.1° to an intensity of the peak at Bragg angle of 14.9°; Ir3 is a ratio (17.9°/18.3°) of an intensity of the peak at Bragg angle of 17.9° to an intensity of the peak at Bragg angle of 18.3°; and Ir4 is a ratio (24.5°/23.4°) of an intensity of the peak at Bragg angle of 24.5° to an intensity of the peak at Bragg angle of 23.4°. The present invention can provide the above novel titanylphthalocyanine having superior photoreceptor characteristics, particularly superior chargeability and photosensitivity to those of the conventional titanylphthalocyanines, and a method for producing the present titanylphthalocyanine, as well as an electrophotographic photoreceptor comprising a charge generating material of the present titanylphthalocyanine, which has excellent photosensitive characteristics.
|
