INK COMPOSITION, INK JET RECORD METHOD USING IT, AND COLORING MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an ink composition which has stability even when it is stored for long time in a high density state, and gives a black colored record image excellent in color tones and various fastnesses of the printed image.SOLUTION: There is provided the ink composition comprising coloring matters expressed by the formula (1) and the formula (2).