Emulsion-based thermal inkjet inks
AssigneeHewlett-Packard Development Company, L.P.
InventorsHenryk Birecki, Hou T. Ng, Howard S. Tom
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Abstract
Emulsion-based thermal inkjet inks include a high boiling point carrier fluid; a colorant; and vesicles comprising a low boiling point expellant fluid, and an ionic surfactant comprising molecules, each having a head with affinity to expellant fluid material and a tail with affinity to carrier fluid, the vesicles having a core defined by the heads of the surfactant molecules, the expellant fluid contained in the core, with the vesicles dispersed in the carrier fluid. A method for preparing the thermal inkjet inks is also disclosed.
Claims13
Emulsion-based thermal inkjet inks, including:
- a non-solvent based ultraviolet (UV) ink dispersion, including:
- a high boiling point carrier fluid present in an amount ranging from about 1 wt % to about 20 wt %;
- a colorant consisting of a pigment present in an amount ranging from 1 wt % to 10 wt %;
- a dispersant present in an amount ranging from 0.5 wt % to 10 wt %;
- vesicles comprising:
- a low boiling point expellant fluid present in an amount ranging from 1 wt % to 15 wt %;
- and
- a surfactant present in an amount ranging from 1 wt % to 15 wt %, the surfactant comprising molecules, each having a head with an affinity to the expellant fluid and a tail with an affinity to the carrier fluid, the vesicles having a core defined by the heads of the surfactant molecules, the expellant fluid contained in the core, with the vesicles dispersed in the carrier fluid;
- a monomer present in an amount ranging from 40 wt % to 80 wt %;
- a photoinitiator present in an amount ranging from 1 wt % to 10 wt %;
- and
- a viscosity modifying agent present in an amount ranging from 1 wt % to 20 wt %.
Emulsion-based thermal inkjet inks, consisting of:
- a non-solvent based ultraviolet (UV) ink dispersion, consisting of:
- a high boiling point carrier fluid present in an amount ranging from about 1 wt % to about 20 wt %;
- a pigment present in an amount ranging from 1 wt % to 10 wt %;
- a dispersant present in an amount ranging from 0.5 wt % to 10 wt %;
- vesicles consisting of:
- water present in an amount ranging from 1 wt % to 15 wt %;
- and
- a surfactant present in an amount ranging from 1 wt % to 15 wt %, the surfactant comprising molecules, each having a head with an affinity to the water and a tail with an affinity to the carrier fluid, the vesicles having a core defined by the heads of the surfactant molecules, the water contained in the core, with the vesicles dispersed in the carrier fluid;
- wherein a ratio of the water to the surfactant ranges from 1:1 to 3:1;
- a monomer present in an amount ranging from 40 wt % to 80 wt %;
- a photoinitiator present in an amount ranging from 1 wt % to 10 wt %;
- and
- a viscosity modifying agent present in an amount ranging from 1 wt % to 20 wt %;
- and
- optionally any of a co-solvent, a biocide, a preservative, or combinations thereof.
Dependencies are inferred from the claim text.