Inks containing glycol ethers and specific polymers for dry time and bleed improvements in ink-jet printing inks
AssigneeHewlett-Packard Company
InventorsDENNIS P. PARAZAK, PALITHA WICKRAMANAYAKE
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Abstract
The ink set of this invention comprises at least two inks, one of which contains a pH sensitive polymer, a glycol ether, and preferably a self-dispersing pigment colorant. A second ink is provided which comprises incompatible inorganic or organic salts or has an appropriate pH. The polymer precipitates onto a medium upon contact with the second ink, thereby providing improved dry time as well as bleed and halo control.
Claims19
An ink for ink-jet printing having good dry time on a substrate, said ink comprising a colorant, at least one pH-sensitive polymer, and an effective amount of a glycol ether solvent to improve dry time.
An ink for ink-jet printing comprising:
- a. from about 0.001% to about 10 wt % of a colorant;
- b. from about 0.1% to about 10 wt % of at least one pH-sensitive polymer;
- and
- c. from about 0.01% to about 20 wt % of a glycol ether solvent.
Dependencies are inferred from the claim text.