초록

Solvent-based inkjet ink formulations including an organic solvent, a resin, a surfactant, and a colorant are provided. The inks have many desirable attributes such as extended decap time.

대표청구항 ▼

1. An inkjet ink, comprising: a fast organic solvent,a resin,a surfactant, anda colorant,wherein the ink is a thermal inkjet ink, has a drying time of less than about 2 seconds, and has a decap time of at least about one hour. 2. The ink of claim 1, wherein the ink has a drying time of less than abo

1. An inkjet ink, comprising: a fast organic solvent,a resin,a surfactant, anda colorant,wherein the ink is a thermal inkjet ink, has a drying time of less than about 2 seconds, and has a decap time of at least about one hour. 2. The ink of claim 1, wherein the ink has a drying time of less than about 1 second. 3. The ink of claim 1, wherein the ink has a decap time of at least about 10 hours. 4. The ink of claim 1, wherein the fast organic solvent is selected from the group consisting of methanol, ethanol, propanol, iso-propanol, acetone, methyl ethyl ketone, methyl isobutyl ketone, pentane, hexane, heptane, methyl acetate, ethyl acetate, propyl acetate, and combinations thereof. 5. The ink of claim 1, wherein the fast organic solvent is ethanol. 6. The ink of claim 1, wherein the ink comprises greater than about 90% of the fast organic solvent. 7. The ink of claim 1, wherein the resin is selected from the group consisting of rosin modified phenolic resin, phenolic resin, styrene-acrylic resin, polyketone resin, and combinations thereof. 8. The ink of claim 1, wherein the surfactant comprises a fluorosurfactant, a siloxane-based surfactant, an acetylenic diol-based surfactant, a hydrocarbon-based surfactant, or a combination thereof. 9. The ink of claim 8, wherein the surfactant comprises a fluorosurfactant. 10. The ink of claim 9, wherein the fluorosurfactant is selected from the group consisting of polyethylene oxide-b-poly(tetrafluoroethylene)polymers, 2-(perfluoroalkyl)ethyl stearate, anionic lithium carboxylate fluorosurfactant, anionic phosphate fluorosurfactant, anionic phosphate surfactant, amphoteric quaternary ammonium-acetate fluorosurfactant, and a combination thereof. 11. The ink of claim 10, wherein the fluorosurfactant is a poly(ethylene oxide)-b-poly(tetrafluoroethylene) copolymer. 12. The ink of claim 1, wherein the surfactant is present in an amount of from about 1.1% to about 5% by weight of the ink. 13. The ink of claim 1, wherein the ink comprises: greater than about 90% by weight of ethanol,a phenolic resin,from about 1.1% to about 5% by weight of the poly(ethylene oxide)-b-poly(tetrafluoroethylene) copolymer, anda colorant. 14. The ink of claim 13, wherein the ink comprises: 91.4% by weight of ethanol,2.9% by weight of a phenolic resin,2.0% by weight of the poly(ethylene oxide)-b-poly(tetrafluoroethylene) copolymer, and3.7% by weight of a colorant. 15. An inkjet ink, consisting of: one fast organic solvent,one resin,one surfactant, andone colorant. 16. The ink of claim 15, wherein the fast organic solvent is selected from the group consisting of methanol, ethanol, propanol, iso-propanol, acetone, methyl ethyl ketone, methyl isobutyl ketone, pentane, hexane, heptane, methyl acetate, ethyl acetate, and propyl acetate. 17. The ink of claim 16, wherein the fast organic solvent is ethanol. 18. The ink of claim 15, wherein the ink consists of greater than about 90% by weight of the fast organic solvent. 19. The ink of claim 15, wherein the resin is selected from the group consisting of rosin modified phenolic resin, phenolic resin, styrene-acrylic resin, and polyketone resin. 20. The ink of claim 15, wherein the surfactant is a fluorosurfactant, a siloxane-based surfactant, an acetylenic diol-based surfactant, or a hydrocarbon-based surfactant. 21. The ink of claim 20, wherein the surfactant is a fluorosurfactant. 22. The ink of claim 21, wherein the fluorosurfactant is selected from the group consisting of polyethylene oxide-b-poly(tetrafluoroethylene)polymers, 2-(perfluoroalkyl)ethyl stearate, anionic lithium carboxylate fluorosurfactant, anionic phosphate fluorosurfactant, anionic phosphate surfactant, and amphoteric quaternary ammonium-acetate fluorosurfactant. 23. The ink of claim 22, wherein the fluorosurfactant is a poly(ethylene oxide)-b-poly(tetrafluoroethylene) copolymer. 24. The ink of claim 21, wherein the ink consists of from about 1.1% to about 5% by weight of the fluorosurfactant. 25. The ink of claim 15, wherein the ink consists of ethanol, a phenolic resin, a poly(ethylene oxide)-b-poly(tetrafluoroethylene) copolymer, and a colorant. 26. The ink of claim 25, wherein the ink consists of: greater than about 90% by weight of ethanol,a phenolic resin,from about 1.1% to about 5% by weight of the poly(ethylene oxide)-b-poly(tetrafluoroethylene) copolymer, anda colorant. 27. The ink of claim 25, wherein the ink consists of: 91.4% by weight of ethanol,2.9% by weight of a phenolic resin,2.0% by weight of the poly(ethylene oxide)-b-poly(tetrafluoroethylene) copolymer, and3.7% by weight of a colorant.