INK COMPOSITION, INKJET RECORDING INK, AND INKJET RECORDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an ink composition with superlative fastness and excellent gray balance from high density regions to low density regions, and an inkjet recording method using the inkjet recording ink.

SOLUTION: The ink composition comprising at least two kinds of water-soluble long wavelength dyes for which the maximum wavelength for the absorption spectrum in an aqueous solvent is 550-700 nm, wherein at least one of the water-soluble long wavelength dyes is a first water-soluble long wavelength dye that is an azo compound, and at least one of the water-soluble long wavelength dyes is a second water-soluble long wavelength dye that differs from the first water-soluble long wavelength dye and the second water-soluble long wavelength dye is a compound having two to four azo groups in a single molecule that are conjugated with each other; an inkjet recording ink using the ink composition; and an inkjet recording method using the inkjet recording ink.

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