INK, INKJET INK, INKJET RECORDING INK SET, INKJET RECORDING METHOD AND METHOD FOR IMPROVING WEATHER RESISTANCE OF COLOR IMAGE MATERIAL

摘要

An ink includes at least one coloring matter represented by a formula (1): wherein X1 represents one of —CR1═ and a nitrogen atom; X2 represents one of —CR2═ and a nitrogen atom; X3 represents one of —CR3═ and a nitrogen atom; R1, R2 and R3 each independently represents one of a hydrogen atom and a substituent; when R1, R2 and R3 each represents a substituent, the substituent may have a substituent; A represents one group selected from a prescribed pyridine ring group, pyrimidine ring group and quinoline ring group.