abstract |
PROBLEM TO BE SOLVED: To provide a water-based ink capable of obtaining high print quality and excellent in fixing property and ejection stability. An aqueous ink comprising a dispersion in which a colorant is included in a polymer and is dispersible in water, wherein the amount of aromatic rings in the polymer is 20% by weight or more and 70% by weight or less of the polymer. Further, the compound further contains a compound represented by the following formula, and the molar ratio of EO to Si (EO / Si) in the compound is preferably 0.8 to 1.5. [Chemical 1] (In the formula, R represents a divalent organic group, PO represents a propyleneoxy group, EO represents an ethyleneoxy group, x, y, a, and b are respectively the number of repeating units, and x is 1 to 200. Numbers, y is a number from 1 to 50, a is a number from 1 to 30, and b is a number from 0 to 20.) [Selection figure] None |