Pigmented ink-jet inks with gloss-enhancing polymers
AssigneeHewlett-Packard Deelopment Co., L.P
InventorSundar Vasudevan
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Abstract
An ink-jet ink is disclosed which comprises polymer-dispersed pigment particles in a liquid vehicle, wherein the polymer has an acid number of at least about 175 and comprises polymer molecules having anionic groups and hydrogen bond-forming groups. The anionic groups and the hydrogen bond-forming groups are configured on each of the polymer molecules to permit association of the anionic groups with cationic groups on a print medium, and to also permit the hydrogen bond-forming groups on neighboring polymer molecules to interact pair wise with each other, as the liquid vehicle dries and/or is absorbed into the medium.
Claims20
An ink-jet ink comprising polymer-dispersed pigment particles in a liquid vehicle, wherein said polymer has an acid number of at least about 175 and comprises polymer molecules having anionic groups configured on said polymer molecules to permit association of said anionic groups with cationic groups on a print medium, and having hydrogen bond-forming groups configured on each said polymer molecule to permit said hydrogen bond-forming groups to interact pair wise with other said polymer molecules, upon removal of said liquid vehicle.
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Dependencies are inferred from the claim text.