GALLIUM PHTHALOCYANINE SOLUTION AND PREPARATION METHOD THEREOF, PRODUCTION METHOD OF GALLIUM PHTHALOCYANINE CRYSTAL, PURIFICATION METHOD OF GALLIUM PHTHALOCYANINE-COMPRISING COMPOSITION, AND PRODUCTION METHOD OF ELECTROPHOTOGRAPHIC PHOTORECEPTOR

摘要

PROBLEM TO BE SOLVED: To provide a gallium phthalocyanine solution and a preparation method thereof, a production method of a gallium phthalocyanine crystal, a purification method of a gallium phthalocyanine-comprising composition, and a production method of an electrophotographic photoreceptor.SOLUTION: As a solvent of gallium phthalocyanine, a specific diamine compound such as 1,2-diaminoethane and 1,3-diaminopropane is used.