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

摘要

Novel anthrapyridone compounds or salts thereof which have a magenta hue suitable for ink-jet recording and brightness and give recorded images having high fastness to light and water. The compounds are represented by the formula A-B ¢wherein A represents a dye residue represented by formula (1), (wherein R1 represents hydrogen, alkoxycarbonyl, or benzoyl and R2 represents hydrogen or methyl); and B represents hydrogen or a substituent on the dye residue A!. The water-based ink composition contains any of the compounds and salts. The method for ink-jet printing employs the same.