A thermal ink jet ink composition comprising: a volatile organic solvent; a binder resin, wherein the binder resin is present in an amount from 0.3% to 8% by weight of the ink composition; a dye; a humectant in an amount from 1% to 40% by weight of the ink composition, and an additive for extending the decap time of the ink composition, wherein either: i) the additive is present in an amount less than 0.1% by weight of the ink composition, and the additive is selected from perfluoropoly ethers, modified perfluoropoly ethers, glycol-based perfluoroalkyl ethers, perfluoroalkyl substituted polyethers, and mixtures thereof; or ii) the additive is present in an amount greater than 0.1% by weight of the ink composition, and the additive is an ionic surfactant additive for extending the decap time of the ink composition selected from unmodified sulfosuccinates, monoester sulfosuccinates, diester sulfosuccinates, modified sulfosuccinates, amine alkylbenzene sulfonates, and mixtures thereof; or iii) the additive is present in an amount greater than 0.1 % by weight of the ink composition, and the additive is a nonionic surfactant additive for extending the decap time of the ink composition selected from nonylphenol ethoxylate phosphates, polyglycol esters, phosphate esters of an alkylphenoxy polyethoxyethanol, acrylic block copolymers, and mixtures thereof; wherein, if water is present, it is present in amount less than 10% by weight of the ink composition; and wherein the ink composition has a decap time of greater than 15 seconds in a thermal ink jet printer. a volatile organic solvent; a binder resin, wherein the binder resin is present in an amount from 0.3% to 8% by weight of the ink composition; a dye; a humectant in an amount from 1% to 40% by weight of the ink composition, and an additive for extending the decap time of the ink composition, wherein either: i) the additive is present in an amount less than 0.1% by weight of the ink composition, and the additive is selected from perfluoropoly ethers, modified perfluoropoly ethers, glycol-based perfluoroalkyl ethers, perfluoroalkyl substituted polyethers, and mixtures thereof; or ii) the additive is present in an amount greater than 0.1% by weight of the ink composition, and the additive is an ionic surfactant additive for extending the decap time of the ink composition selected from unmodified sulfosuccinates, monoester sulfosuccinates, diester sulfosuccinates, modified sulfosuccinates, amine alkylbenzene sulfonates, and mixtures thereof; or iii) the additive is present in an amount greater than 0.1 % by weight of the ink composition, and the additive is a nonionic surfactant additive for extending the decap time of the ink composition selected from nonylphenol ethoxylate phosphates, polyglycol esters, phosphate esters of an alkylphenoxy polyethoxyethanol, acrylic block copolymers, and mixtures thereof; i) the additive is present in an amount less than 0.1% by weight of the ink composition, and the additive is selected from perfluoropoly ethers, modified perfluoropoly ethers, glycol-based perfluoroalkyl ethers, perfluoroalkyl substituted polyethers, and mixtures thereof; or ii) the additive is present in an amount greater than 0.1% by weight of the ink composition, and the additive is an ionic surfactant additive for extending the decap time of the ink composition selected from unmodified sulfosuccinates, monoester sulfosuccinates, diester sulfosuccinates, modified sulfosuccinates, amine alkylbenzene sulfonates, and mixtures thereof; or iii) the additive is present in an amount greater than 0.1 % by weight of the ink composition, and the additive is a nonionic surfactant additive for extending the decap time of the ink composition selected from nonylphenol ethoxylate phosphates, polyglycol esters, phosphate esters of an alkylphenoxy polyethoxyethanol, acrylic block copolymers, and mixtures thereof; wherein, if water is present, it is present in amount less than 10% by weight of the ink composition; and wherein the ink composition has a decap time of greater than 15 seconds in a thermal ink jet printer.