| 摘要 |
PROBLEM TO BE SOLVED: To provide a black inkjet recording ink composition that can form an image excellent in scratch resistance and color tone.SOLUTION: The black inkjet recording ink composition contains: a carbon black pigment; at least one color pigment selected from a phthalocyanine pigment and an azo pigment; and an aqueous medium. The ink composition has an average primary particle diameter of 100 nm or lower, wherein the ratio ((average secondary particle diameter)/(average primary particle diameter)) of the average secondary particle diameter to an average primary particle diameter is 2.0 to 3.0. |
