Ink composition and ink jet recording method using the same
AssigneeSeiko Epson Corporation
InventorsKatsuko Aoki, Tsuyoshi Sano
Life of this patent
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Abstract
An ink composition containing an aprotic polar solvent, a thermoplastic resin, a pigment, a cyclic amide, a surfactant, and water and is printable on a recording surface that is a plastic film. The ink composition is capable of forming a record, having high weather resistance properties such as adhesion, scratch resistance, and water resistance, on a recording surface that is a plastic film.
Claims17
An ink composition containing an aprotic polar solvent, a thermoplastic resin, a pigment, a cyclic amide, a surfactant, and water, wherein the aprotic polar solvent is at least one selected from the group consisting of 1,1,3,3-tetramethylurea, dimethyl sulfoxide, N,N-dimethylformamide, hexamethylphosphoric triamide, and 1,3-dimethyl-2-imidazolidinone, wherein the thermoplastic resin has a glass transition point (Tg) of 40° C. or higher, and wherein the aprotic polar solvent is present in the ink composition in an amount of from 10-15 weight percent.
An ink composition containing an aprotic polar solvent, a thermoplastic resin, a pigment, a cyclic amide, a surfactant, and water, wherein the aprotic polar solvent is at least one selected from the group consisting of 1,1,3,3-tetramethylurea, dimethyl sulfoxide, N,N-dimethylformamide, hexamethylphosphoric triamide, and 1,3-dimethyl-2-imidazolidinone, wherein the thermoplastic resin has a glass transition point (Tg) of 40° C. or higher, and wherein the aprotic polar solvent is present in the ink composition in an amount between 2.0 to 25.0 weight percent effective for improving adhesion, scratch resistance or water resistance of print formed with the ink composition on a recording medium that comprises a plastic film.
Dependencies are inferred from the claim text.