abstract |
An aqueous ink composition is described which contains water-soluble dye dissolved in water, the dye comprising at least one water-soluble azo dye represented by formula (I) <IMAGE> (I) wherein R1 represents an amino group, R2 represents an alkyl group, and M represents a hydrogen atom, an alkali metal, an ammonium group or an organic amine group. The aqueous ink composition of the invention is suited for ink-jet printing. |