| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a clear magenta compound suitable for ink-jet recording exhibiting lightfast and water-resistant recorded documents. <P>SOLUTION: An aqueous ink composition comprises anthrapyridone compounds shown by a formula A-B [in which A represents a pigment residue of formula (1) wherein R<SB>1</SB>represents a hydrogen atom, an alkoxycarbonyl or benzoyl group, R<SB>2</SB>represents a hydrogen atom or a methyl group, and B represents a hydrogen atom or a substituent] or their salts, and an ink-jet printing method using the aqueous ink composition is provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
