| 摘要 |
PROBLEM TO BE SOLVED: To provide an aqueous black ink composition having excellent storage stability, ozone gas resistance and light resistance.SOLUTION: This invention provides a porphyrazine dye represented by formula (1), and salt thereof, E is an alkylene group; X is an anilino group having a sulfo group as a substituent, or the like; Y is a substituted amino group; the sum of b and c and the sum of d and e independently represent 0.10-4.00 as an average value; and M is copper, nickel, zinc, aluminum, iron or cobalt. |
