Patent ID: 9051485
Filing Date: 2015-06-09
Classification: B41M,C09D

Abstract:
1. An inkjet ink which is an aqueous inkjet ink suitable for use with a non-absorptive recording medium, the inkjet ink comprising water, a pigment, a water-soluble resin, a water-soluble organic solvent, and a surfactant, wherein the water-soluble resin is a copolymer resin which has an acid number of not less than 50 and not more than 130 mgKOH/g, a glass transition temperature (Tg) of not less than 30° C. and not more than 100° C., and a weight-average molecular weight (Mw) of not less than 20,000 and not more than 80,000, and which is synthesized from a first monomer component that consists of only methyl methacrylate, and an alkyl acrylate and/or alkyl methacrylate, and a second monomer component that consists of an acid monomer, and in which the total mass of methyl methacrylate and the alkyl acrylate or alkyl methacrylate is not less than 80 and not more than 95% relative to the total mass of all of the monomers constituting the copolymer resin and a content of the copolymer resin is not less than 3% by mass based on total ink mass and not more than 15% by mass based on total ink mass; and the surfactant comprises a fluorochemical surfactant and a polyoxyethylene alkyl ether.