| 摘要 |
<p>This ink composition contains a pigment (I), which is at least one type of pigment represented by formula (1), a tautomer thereof, or a salt of the pigment or tautomer, and a pigment (II), which is at least one type of pigment represented by formula (2) or a salt thereof. In formula (1), R1 represents a C1-C4 alkyl group or the like; R2 represents a cyano group or the like; R3 and R4 independently represent a hydrogen atom, a sulfo group, or a C1-C4 alkoxy group or the like; R5 and R7 independently represent a C1-C4 alkylthio group or the like; R6 and R8 independently represent a C1-C4 alkyl carbonyl amino group; R9 and R10 independently represent a C1-C4 alkoxy group or the like; and R11 to R13 independently represent a hydrogen atom, a sulfo group or the like. In formula (2), A and B independently represent a phenyl group or the like, which may have a substituent.</p> |
