| abstract |
A method for printing a non-aqueous ink onto a printing substrate, using a non-aqueous ink comprising a coloring material and a non-aqueous solvent is provided, wherein the non-aqueous ink has a total surface free energy, calculated from the Kaelble-Uy theoretical formula, of 25 to 30 mN/m, and a dispersive component ratio of 0.55 to 0.75, and the printing substrate has a coating layer comprising inorganic particles, has a total surface free energy, calculated from the Kaelble-Uy theoretical formula, of 30 to 50 mN/m, has a dispersive component ratio of 0.80 to 1.0, and exhibits a liquid absorption property for the inorganic particles of 0.30 or greater. The method for printing a non-aqueous ink enables roller transfer staining to be suppressed while maintaining high image density. |