| abstract |
An aqueous pigment ink for ink-jet recording which can suppress sedimentation due to aggregation of pigments and is excellent in dispersion stability of a self-dispersing pigment is provided. A self-dispersing pigment, a quaternary amino acid, and an alkanediol are contained, and the alkanediol contains at least 1,6-hexanediol, and the quaternary amino acid contains the 1,6-hexane. It is a water-based pigment ink for ink-jet recording, containing more than the diol. [Selection figure] None |