| 摘要 |
PROBLEM TO BE SOLVED: To provide inkjet ink excellent in discharge stability.SOLUTION: The inkjet ink contains a color material represented by formula (1), a surfactant represented by formula (2), and an alkanediol compound, wherein the content A (mass%) of the color material represented by formula (1), the content B (mass%) of the surfactant represented by formula (2), and the content C (mass%) of the alkanediol compound based on the total mass of the ink satisfy the following relation: 0<(A+B)/C≤3.0. In formula (1), [A] is a five-membered heterocyclic group; [B] and [C] are CRand CRor one of them is a nitrogen atom and the other is CR; Rand Rare each independently a hydrogen atom or any substituent selected from the group consisting of an aliphatic group, an aromatic group, a heterocyclic group, an acyl group, and the like; Rand Rconstituting [D] and a part of [B] and [C] in formula are each independently a hydrogen atom or any substituent selected from the group consisting of a halogen atom, an aliphatic group, an aromatic group, a heterocyclic group, and the like. In formula (2), m+n is an average value of the addition mole number of an ethylene oxide group of the surfactant, and 0≤m+n≤8.0. |
