Patent ID: 8865793
Filing Date: 2014-10-21
Classification: B41M,C09D

Abstract:
1. An inkjet recording ink for printing on a heated recording medium, comprising: at least (1) a pigment, (2) an ink-soluble resin of 3-10 weight % based on a solid content, the ink-soluble resin dissolved in the ink, (3) a water-soluble organic solvent combination, and (4) a silicone surfactant or a fluorine surfactant, and the ink-soluble resin and the water-soluble organic solvent combination satisfy the following conditions: 1) at least one type of the ink-soluble resin is provided with a carboxyl group as an acid group, and an acid value between not less than 80 but less than 300, and 2) the water-soluble organic solvent combination contains at least a combination of 5-15 weight % of solvent A, and 2-15 weight % of solvent B; Solvent A: glycol ether or 1,2-alkanediols, Solvent B: a cyclic solvent containing a nitrogen or a sulfur atom, a cyclic ester solvent or dimethyl sulfide, and 3) the ink-soluble resin is soluble against an ink vehicle except a pigment, a dispersion resin and soluble resin, at not less than 10 weight % based on solid content at 25° C.