| 摘要 |
An aqueous ink-jet ink composition contains: (i) a polyglycerol fatty acid ester, in which the number of carbon atoms of the fatty acid moiety is equal to 14, the polyglycerol fatty acid ester being contained in a proportion falling within the range of more than 0.1% by mass to less than 3.5% by mass, and (ii) an acetylene glycol, in which the number of mols of ethylene oxide added is equal to at least 10 mols, the acetylene glycol being contained in a proportion falling within the range of 0.2% by mass, inclusive, to 10% by mass, inclusive.
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