NOVEL COPPER PHTHALOCYANINE PIGMENT AND PROCESS FOR PRODUCING COPPER PHTHALOCYANINE FINE PARTICLES

摘要

Disclosed is a copper phthalocyanine pigment comprising copper phthalocyanine that is in an a-type crystal form and is superior in properties to e-type copper phthalocyanine under specific conditions.  Also disclosed is a process for producing copper phthalocyanine fine particles. The copper phthalocyanine pigment comprises copper phthalocyanine that is in an a-type crystal form and exhibits a transmission spectrum at 380 to 780 nm that has a highest transmittance wavelength (?max) of less than 478 nm.