| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inkjet recording aqueous ink composition which excels in discharge recovery properties even after stored at high temperatures, and has good light resistance. <P>SOLUTION: The inkjet recording aqueous ink composition includes a coloring material including an azo pigment represented by formula (1) (wherein Z is a divalent group derived from a 5-8 membered nitrogen-containing heterocycle; Y<SP>1</SP>, Y<SP>2</SP>, R<SP>11</SP>, and R<SP>12</SP>are each hydrogen or a substituent; G<SP>1</SP>and G<SP>2</SP>are each hydrogen, an alkyl group, an aralkyl group, an alkenyl group, an alkynyl group, an aryl group or a heterocyclic group; W<SP>1</SP>and W<SP>2</SP>are each an alkoxy group, an amino group, an alkyl group or an aryl group), a dispersing agent, and a urethane-modified polyester resin. <P>COPYRIGHT: (C)2011,JPO&INPIT |
