| 摘要 |
PROBLEM TO BE SOLVED: To provide an ink composition for inkjet, excellent in dispersion stability and discharge reliability and suppressing reduction of liquid repellency of inkjet head members.SOLUTION: The ink composition for inkjet comprises a pigment, a polymer compound including structural units represented by formula (1), (2) and (3), a water soluble organic solvent including a repeating structure comprising 2-3C oxyalkylene groups, at least one of colloidal silica and water soluble alkali metal silicates, and water. In the formulae (1)-(3), R, Rand Rare each independently H or methyl; Ris 1-10C alkyl, and n is an integer of 1-20. |
