Patent ID: 9487658
Filing Date: 2016-11-08
CPC Classification: C09B,Y10T

Claim Text:
1. A copper phthalocyanine pigment containing copper phthalocyanine microparticles containing at least one kind of copper phthalocyanine microparticles whose crystal type is any of two kinds of β- and γ-type crystals, wherein a wavelength (λmax) to give the maximum transmittance in 380 nm to 780 nm of a transmission spectrum of the copper phthalocyanine microparticles is less than 478 nm, wherein an absorption spectrum of the copper phthalocyanine microparticles in 380 nm to 780 nm is an absorption spectrum form of an α-type crystal, and wherein the copper phthalocyanine microparticles are formed by a process comprising: a fluid to be processed is supplied between processing surfaces being capable of approaching to and separating from each other and displacing relative to each other, pressure of force to move in the direction of approaching is balanced with pressure of force to move in the direction of separation thereby keeping a minute space in the distance between the processing surfaces, wherein the pressures of force include supply pressure of the fluid to be processed and pressure applied between the processing surfaces, at least one of which rotates relative to the other, the minute space kept between two processing surfaces is used as a flow path of the fluid to be processed, thereby forming a thin film fluid of the fluid to be processed, forming the copper phthalocyanine microparticles in this thin film fluid, wherein the fluid to be processed is at least two kinds of fluids to be processed including a copper phthalocyanine solution having a copper phthalocyanine dissolved in a solvent and a solvent capable of being a poor solvent to the copper phthalocyanine, and wherein the copper phthalocyanine solution is a solution having copper phthalocyanine dissolved in an organic solvent that is added with an acidic substance, and wherein the solvent capable of being the poor solvent to the copper phthalocyanine is one solvent selected from the group consisting of a mixed solvent of an aromatic compound solvent and ethylene diamine, an aromatic compound solvent, and an ether compound solvent.