INK COMPOSITION, RECORDING METHOD USING THE SAME, AND RECORDED MATTER

摘要

This invention provides an ink composition that can yield images having an excellent glossy impression on glossy recording media. The ink composition comprises at least a colorant coated with a water insoluble polymer and a resin emulsion and is characterized in that the water insoluble polymer has a weight average molecular weight of 50000 to 150000, the resin emulsion comprises a resin of a monomer component, which is the same type as the monomer component constituting the water insoluble polymer, and the resin has a weight average molecular weight of 1.5 to 4 times larger than the weight average molecular weight of the water insoluble polymer. Alternatively, the ink composition comprises at least a colorant coated with a water insoluble polymer and resin particles and is characterized in that the colorant coated with the water insoluble polymer is a coloring material prepared by a phase inversion emulsification method and the resin particles are formed of a polymer prepared by an emulsion polymerization method.