Mixtures of anionic and cationic inks
AssigneeEastman Kodak Company
InventorsRichard Szajewski, Xiaoru Wang
Life of this patent
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Abstract
This invention relates to an ink jet ink set comprising a commonly colored first aqueous ink and second aqueous ink, wherein the first ink has a cationic coloring agent and the second ink has an anionic coloring agent. It further provides a method of printing said inks.
Claims16
An ink jet ink set comprising a commonly colored first aqueous ink and second aqueous ink, wherein the first ink has a cationic coloring agent and the second ink has an anionic coloring agent and wherein the coloring agents of both the first and second inks comprise pigments.
A method of printing an ink jet image comprising separately applying to an ink jet ink receiver commonly colored first and second inks, wherein the first ink has a cationic coloring agent and the second ink has an anionic coloring agent and wherein the coloring agents of both the first and second inks comprise pigments.
An ink jet ink receiver having an image printed thereon, said image comprising a first aqueous ink and second aqueous ink printed in an overlying manner, wherein the first ink has a cationic coloring agent and the second ink has an anionic coloring agent;
- wherein the coloring agents of both the first and second inks comprise pigments;
- and wherein the coloring agents are electrostatically associated.
Dependencies are inferred from the claim text.