PRODUCTION OF LOW CRYSTALLINE PHTHALOCYANINE, PRODUCTION OF CRYSTALLINE PHTHALOCYANINE AND CRYSTALLINE PHTHALOCYANINE MIXED CRYSTAL SUBSTANCE USING THE SAME PHTHALOCYANINE AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR USING THE SAME

摘要

PROBLEM TO BE SOLVED: To simply, industrially and advantageously produce the subject phthalocyanine useful as an electrophotographic photoreceptor, etc., by wet dispersing a crystalline phthalocyanine with a dispersion medium containing water. ;SOLUTION: When crystalline phthalocyanines are wet dispersed, 20-100 wt.% of water is contained in a dispersion medium used for the wet dispersion. A substance prepared by removing an organic compound used as at least the dispersion medium from a hydrous dispersion of a low crystalline phthalocyanine (preferably titanyloxyphthalocyanine, etc.), prepared by the wet dispersion is preferably treated with water and a halogenated hydrocarbon compound or the water and a hydrocarbon compound to produce a crystalline phthalocyanine manifesting peaks at 9.5°, 13.5°, 14.2°, 18.0°, 24.0° and 27.2° Bragg angles (2θ±0.2°) for X rays of CuKα1,541 Å.;COPYRIGHT: (C)2000,JPO