| abstract |
PROBLEM TO BE SOLVED: To provide a blue inkjet pigment having high ozone resistance and high optical density after printing, a method for producing the same, and an inkjet pigment dispersion. SOLUTION: A chlorinated copper phthalocyanine having a chlorine substitution number of 8 or less in a molecule is used as a raw material of an inkjet pigment. This chlorinated copper phthalocyanine crude is made into a pigment by a known method, and the obtained inkjet pigment is dispersed using a homogenizer, whereby an inkjet pigment dispersion having an average particle diameter of 200 nm or less can be obtained. |