| abstract |
PROBLEM TO BE SOLVED: To provide a water-based ink composition suitable as an ink for ink jet recording, which has high storage stability and ejection stability, and has high image density with less bleeding, shading unevenness and back-through in plain paper and recycled paper. Yes. SOLUTION: (a) It is a pigment and is surface-treated so that at least one functional group represented by the following formula or a salt thereof is bonded directly or indirectly to the surface of the pigment, and is dispersed in water without a dispersant. Possible coloring ingredients, [Chemical 1] (B) a humectant, (c) a glycerin ether compound represented by the following formula, [Chemical 2] (D) A water-based ink composition comprising at least water. [Selection figure] None |