Patent ID: 7226498

Claim:
An ink jet yellow ink to be used in combination with an ink jet light-color ink comprising at least a coloring material and a water-soluble organic solvent, wherein a coloring material of the ink jet yellow ink is a compound represented by the following General Formula (I) or a salt thereof; and wherein the ink jet light-color ink satisfies the following conditions (i) and (ii): (i) a content (mass %) of the coloring material in the ink jet light-color ink is 0.1 mass % or more and 2.0 mass % or less with respect to a total mass of the ink jet light-color ink, and (ii) a total content (mass %) of a water-soluble organic solvent having an evaporation rate X (mass %) and a moisture absorption rate Y (mass %) which satisfy a relationship represented by the following Expression (1) is 50 mass % or more with respect to a total content (mass %) of a water-soluble organic solvent in the ink jet light-color ink; wherein M's each independently represent a hydrogen atom, an alkali metal, an alkali earth metal, a cation of organic amine or an ammonium ion, and n's each independently represent 1 or 2; and Y≦ 2.8 X+ 10 Expression (1).