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

摘要

The present invention provides novel anthrapyridone compounds or salts thereof which have a magenta hue and vividness suitable for ink-jet recording and give the recorded material having a high fastness in light fastness and water fastness. That is, the present invention relates to an anthrapyridone compound represented by Formula A-B or the salt thereof, wherein A is the dyestuff residue represented by Formula (1) <CHEM> (in the formula, R1 is hydrogen atom or an alkoxycarbonyl group and R2 is hydrogen atom or methyl group); and B is hydrogen atom or a substituent group on the dyestuff residue A, a water-based magenta ink composition which includes the said compound and an ink-jet recording method which uses the said compound.