Inkjet ink composition
AssigneeHewlett-Packard Development Company, L.P.
InventorsPhillip C. Cagle, Dennis Z. Guo
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Abstract
In one aspect the present disclosure relates to an aqueous inkjet ink composition comprising a yellow azo pigment, a pigment synergist, a polymeric dispersant, 5 to 20 wt % of a latex polymer, 5 to 40 wt % of an organic co-solvent that has a boiling point of a boiling point in the range of about 170° C. to about 285° C., and water. The pigment synergist comprises a pigment of the formula (I): where each of R1 to R10 is each independently selected from H, carboxylate, and/or a sulphonate group.
Claims20
An aqueous inkjet ink composition comprising:
- a yellow azo pigment,
- a pigment synergist comprising a compound of Formula I,
- where each of R1 to R10 is independently selected from H, a carboxylate and/or a sulphonate group, and a precipitating agent comprising a magnesium, strontium, or aluminium compound,
- a polymeric dispersant,
- 5 to 20 wt % of a latex polymer,
- 5 to 40 wt % of an organic co-solvent that has a boiling point of a boiling point in the range of about 170° C. to about 285° C., and
- water.
A printed substrate comprising a rigid non-porous print medium, wherein the rigid non-porous print medium has a latex layer deposited on its surface, and wherein the latex layer encapsulates a yellow azo pigment, a pigment synergist and a polymeric dispersant, said pigment synergist comprising a compound of Formula
- where each of R1 to R10 is independently selected from H, a carboxylate and/or a sulphonate group, and a precipitating agent comprising a magnesium, strontium, or aluminium compound.
Dependencies are inferred from the claim text.