PHTHALOCYANINE CRYSTAL, ELECTROPHOTOGRAPHIC PHOTORECEPTOR, AND ELECTROPHOTOGRAPHIC PHOTORECEPTOR CARTRIDGE AND IMAGE FORMING APPARATUS UTILIZING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide excellent phthalocyanine crystal that exhibits high sensitivity and is reduced in variation in sensitivity due to the change of humidity in use environment, and thus is suitable for use as material of a solar cell, electronic paper, electrophotographic photoreceptor, etc.SOLUTION: Phthalocyanine crystal is attained through a process for converting a crystal-type by bringing a phthalocyanine crystal precursor into contact with an aromatic aldehyde compound.