Aqueous magnetic ink character recognition ink-jet ink composition containing a combination of special surfactants
AssigneeNu-kote International, Inc.
InventorsMichael J. McElligott, Donald E. Snyder, Jr., Ronald E. Coutta
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Abstract
An aqueous ink-jet ink composition for MICR applications is provided comprising a metal oxide pre-dispersion combined with an aqueous ink-jet ink composition, wherein the metal oxide pre-dispersion contains metal oxide pigment or particles of a very small particle size, at least one surfactant to aid in the aid in the dispersion of the metal oxide particles. Particularly, the surfactant component is a combination of an anionic surfactant and an anionic-nonionic surfactant, or may be a combination of other types of surfactants.
Claims7
An aqueous MICR ink-jet ink composition comprising a metal oxide pre-dispersion and an ink-jet ink composition, the metal oxide pre-dispersion comprising a homogeneous suspension comprising small metal oxide particles dispersed into a homogeneous mixture of an aqueous medium and a combination of surfactants, and the ink-jet ink composition comprising at least a colorant and an aqueous solvent.
An aqueous MICR ink-jet ink pre-dispersion for use in the preparation of a MICR ink-jet ink comprising a small particle size metal oxide dispersed in a homogeneous mixture of an aqueous medium and a combination of an anionic surfactant and an anionic-nonionic surfactant.
Dependencies are inferred from the claim text.