Abstract Disclosed is a crystalline oxytitanium phthalocyanine which shows intense diffraction peaks at Bragg angles (2 theta +/- 0.2:) of 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 in the X-ray diffraction spectrum, the intensity of the diffraction peak at Bragg angle of 26.3 DEG being most strong and the intensity of the diffraction peaks at Bragg angles between 4 DEG - 8 DEG being less than 5% of the intensity of the diffraction peak at Bragg angle of 26.3 DEG . Further, disclosed is a photoreceptor for use in electrophotography, comprising at least a charge generation layer in which the oxytitanium phthalocyanine above is dispersed in a binder polymer and a charge transport layer laminated thereon.
(1) A crystalline oxytitanium phthalocyanine which shows intense diffraction peaks at Bragg angles (28 + 0.2°) of 9.3°, 10.6°, 13.2°, 15.1°, 15.7°, 16.1°, 20.8°, 23.3°, 26.3° and 27.1° in the X-ray diffraction spectrum, the intensity of the diffraction peak at Bragg angle of 26.3° being most strong and the intensity of the diffraction peaks at Bragg angles between 4° - 8° being less than 5 % of the intensity of the diffraction peak at Bragg angle of 26.3°.
Claim 2
Dependent Claim
109 words
(2) A photoreceptor for use in electrophotography, comprising at least a charge generation layer in which an oxytitanium phthalocyanine is dispersed in a binder polymer and a charge transport layer laminated thereon, wherein the oxytitanium phthalocyanine shows intense diffraction peaks at Bragg angles (28 + 0.2°) of 9.3°, 10.6°, 13.2°, 15.1°, 15.7°, 16.1°, 20.8°, 23.3°, 26.3° and 27.1° in the X-ray diffraction spectrum and the intensity of the diffraction peak at Bragg angle of 26.3° is most strong and the intensity of the diffraction peaks at Bragg angles between 4° - 8° is less than 5 % of the intensity of the diffraction peak at Bragg angle of 26.3°.
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