WATER-SOLUBLE COMPLEX DYE, RECORDING FLUID, AND METHOD OF RECORDING

摘要

A water-soluble complex dye capable of forming an image having light resistance, ozone resistance, and high saturation; a water-based recording fluid especially for ink-jet recording which contains the dye; an ink set including the recording fluid; and a method of ink-jet recording. The water-soluble complex dye comprises: an azo compound represented by the following general formula (1) or a tautomer thereof; and transition metal ions. The method of ink-jet recording comprises using the recording fluid. (1) (In the general formula (1), A<1> represents either a 5- to 7-membered heteromonocyclic group containing one or two heteroatoms among the ring-constituting atoms or a fused heterocyclic group including the heteromonocycle and can have any desired substituent, provided that the group does not have substituent hydroxy in the positions adjacent to the carbon atom bonded to the azo group; ring X<1> represents a fused heterocycle which includes a 6-membered heterocycle bonded to the azo group and optionally has any desired substituent; and R<1> and R<2> each independently represents hydrogen or a monovalent substituent.)