Back to results
US 2021/0189160 A1Published application
Inkjet ink composition
AssigneeHewlett-Packard Development Company, L.P.
InventorsSundar VASUDEVAN, Raymond ADAMIC, Max YEN
Life of this patent
Estimating the term…
Abstract
An example of an inkjet ink composition includes a pigment, a dispersion synergist, a metal oxide, a polar solvent and water. The pigment is selected from the group consisting of a quinacridone and a phthalocyanine. The dispersion synergist has a structure of the pigment substituted with at least one solubilizing moiety selected from the group consisting of an ionic moiety, a non-ionic moiety, and a combination thereof.
Claims15
An inkjet ink composition, comprising:
- a pigment selected from the group consisting of a quinacridone and a phthalocyanine;
- a dispersion synergist having a structure of the pigment substituted with at least one solubilizing moiety selected from the group consisting of an ionic moiety, a non-ionic moiety and a combination thereof;
- a metal oxide;
- a polar solvent;
- and
- water.
3 more elements
A method for making an inkjet ink composition, comprising:
- forming a pigment dispersion including:
- a pigment selected from the group consisting of a quinacridone and a phthalocyanine;
- a dispersion synergist having a structure of the pigment substituted with at least one solubilizing moiety selected from the group consisting of an ionic moiety, a non-ionic moiety, and a combination thereof;
- a polar solvent;
- and
- water;
- incorporating the pigment dispersion into an aqueous-based ink vehicle;
- and
- incorporating a metal oxide into the aqueous-based ink vehicle.
6 more elements
A printing method, comprising:
- inkjet printing an inkjet ink composition onto a paper, the inkjet ink composition including:
- a pigment selected from the group consisting of a quinacridone and a phthalocyanine;
- a dispersion synergist having a structure of the pigment substituted with one of:
- an ionic moiety selected from the group consisting of a sulfonate, a carboxylate, a phosphonate, and combinations thereof;
- or
- a non-ionic moiety selected from the group consisting of poly(ethylene glycol), a sulfonamide, a carboxamide, a urethane, and combinations thereof;
- or
- a combination of the ionic moiety and the non-ionic moiety, wherein the ionic moiety is selected from the group consisting of a sulfonate, a carboxylate, and a phosphonate, and the non-ionic moiety is selected from the group consisting of a sulfonamide and a carboxamide;
- a metal oxide;
- a polar solvent;
- and
- water.
9 more elements
Dependencies are inferred from the claim text.