NOVEL ANTHRAPYRIDONE COMPOUNDS, WATER-BASED MAGENTA INK COMPOSITION, AND METHOD OF INK-JET PRINTING

摘要

Novel anthrapyridone compounds represented by formula (1) or salts thereof, which each has a hue and brightness suitable for ink-jet printing and gives a print excellent in fastness to light and water; a water-based magenta ink composition containing any of the compounds and salts; a method of ink-jet printing employing the same; and novel intermediates therefor. In said formula, R1 represents hydrogen, alkyl, etc.; R2 represents hydrogen, methyl, etc.; and X and Y each independently represents chlorine, hydroxy, etc.)