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US 7,094,277 B2Granted
Counterion use for reduction of decap and for improvement of durability of inkjet images
AssigneeHewlett-Packard Development Company, L.P.
InventorsDavid M. Schut, Christian Schmid
Life of this patent
Estimating the term…
Abstract
A dye for ink-jet printing on both hydrophilic and hydrophobic papers. The dye includes a chromophore tonically coupled to a counterion. One of the chromophore and the counterion includes a hydrophilic moiety. The other includes a hydrophobic moiety.
Claims24
A dye for ink-jet printing, comprising:
- a chromophore;
- a counterion ionically linked to the chromophore, wherein the counterion comprises a first interaction enhancer;
- and
- a second interaction enhancer covalently linked to the chromophore, wherein
- one of the first interaction enhancer and the second interaction enhancer is a hydrophilic moiety, and
- one of the first interaction enhancer and the second interaction enhancer is a hydrophobic moiety.
3 more elements
A method of increasing the interaction of an ionic dye with a substrate, comprising,
- associating a first counterion with the ionic dye,
- wherein the first counterion comprises a member of a hydrophilic moiety and a hydrophobic moiety.
A method of increasing the interaction of a dye with a substrate, comprising covalently attaching at least one member of a hydrophilic and a hydrophobic moiety to the dye.
Dependencies are inferred from the claim text.