Ink composition
AssigneeDomino Printing Sciences PLC
InventorsAllan Marshall, Alan L. Hudd
Life of this patent
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Abstract
An ink-jet ink comprises a colorant and a liquid phase consisting essentially of polymerizable monomers. For continuous printing, the ink also includes a conductive component that is soluble in the liquid phase. No methanol, ethanol, MEK or other such low molecular weight organic solvent is required.
Claims17
An ink-jet ink free of volatile solvents comprising an admixture of colorant, a water-soluble polar conductive material and liquid phase, wherein said liquid phase consists essentially of polymerisable monomers and wherein said water-soluble polar conductive material is dissolved in said liquid phase.
A method of printing a substrate by ink-jet printing, which comprises the steps of applying continuously to the substrate an ink-jet ink, and curing the printed substrate, wherein said ink-jet ink comprises an admixture of colorant, a water-soluble polar conductive material and liquid phase, wherein said liquid phase consists essentially of polymerisable monomers, wherein said water-soluble polar conductive material is dissolved in said liquid phase, and wherein said ink-jet ink is free of volatile solvents.
A non-conductive ink comprising a colorant, a liquid phase consisting essentially of polymerisable monomers and a polymeric or further polymerizable material whose presence provides increased viscosity of up to 50 cP at 25.degree. C.
Dependencies are inferred from the claim text.