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US 2021/0155815 A1Published application
Black inkjet ink composition
AssigneeHewlett-Packard Development Company, L.P.
InventorsSundar Vasudevan, Raymond Adamic, Max Yen
Life of this patent
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Abstract
A black inkjet ink composition includes a carbon black pigment; a dispersion synergist having an aromatic structure 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. A method for making the black inkjet ink composition and a printing method using the same is also disclosed.
Claims15
A black inkjet ink composition, comprising:
- a carbon black pigment;
- a dispersion synergist having an aromatic structure 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.
2 more elements
A method for making a black inkjet ink composition, comprising:
- forming a black pigment dispersion including:
- a carbon black pigment;
- a dispersion synergist having an aromatic structure 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;
- and
- incorporating the black pigment dispersion into an aqueous-based ink vehicle.
5 more elements
A printing method, comprising:
- inkjet printing a black inkjet ink composition onto at least a portion of a paper without printing a colored ink onto on the at least the portion, the black inkjet ink composition including:
- a carbon black pigment;
- a dispersion synergist having an aromatic structure 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.
3 more elements
Dependencies are inferred from the claim text.