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US 10,947,399 B2Granted
Piezo-jettable varnish composition
AssigneeHP Scitex Ltd.
InventorsEytan Cohen, Alex Trubnikov, Shimrit Rubin, Efrat Soroker, Kfir Dar, Kobi Cohen
Life of this patent
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Abstract
Herein is described a piezo-jettable varnish composition comprising a latex polymer having a weight averaged molecular weight Mw of greater than about 50 000, a polymeric salt derived from an acidic polymer having a weight averaged molecular weight Mw in the range of about 1000 to about 50 000, water, and a co-solvent, wherein, the latex polymer and polymeric salt are present in amounts such that the ratio of latex polymer to polymeric salt by weight is in the range of greater than about 1:1 to about 8:1.
Claims11
A piezo-jettable varnish composition comprising:
- a latex polymer having a weight averaged molecular weight Mw of greater than 50 000;
- a polymeric salt derived from an acidic polymer having a weight averaged molecular weight Mw in the range of 1000 to 50 000;
- water;
- and
- a co-solvent,
- wherein, the latex polymer and polymeric salt are present in amounts such that the ratio of latex polymer to polymeric salt by weight is in the range of greater than 1:1 to 8:1;
- wherein the varnish composition has a total solids content in the range of 10 wt % to 50 wt %;
- and wherein the varnish composition further comprises:
- 0.5 wt % to 5 wt % surfactant;
- 1 wt % to 10 wt % wax;
- 10 wt % to 85 wt % of the latex polymer;
- and
- 5 wt % to 50 wt % of the polymeric salt,
- by total solids.
11 more elements
A piezo-jettable varnish composition comprising:
- a latex polymer having a weight averaged molecular weight Mw of greater than 50 000;
- a polymeric salt derived from an acidic polymer having a weight averaged molecular weight Mw in the range of 1000 to 50 000;
- water;
- and
- a co-solvent,
- wherein, the latex polymer and polymeric salt are present in amounts such that the ratio of latex polymer to polymeric salt by weight is in the range of greater than 1:1 to 8:1;
- and wherein the varnish composition further comprises:
- 0.1 wt % to 2 wt % surfactant;
- 0.1 wt % to 5 wt % wax;
- 5 wt % to 45 wt % of the latex polymer;
- 1 wt % to 25 wt % of the polymeric salt;
- 40 wt % to 90 wt % of the water;
- and
- 2 wt % to 60 wt % of the co-solvent,
- by total weight of the composition.
12 more elements
A printing method comprising:
- providing a printed substrate comprising a print substrate on which a printed image is disposed;
- providing a piezo-jettable varnish composition;
- jetting the piezo-jettable varnish composition onto the printed substrate to provide a varnish layer disposed on the printed image,
- wherein the piezo-jettable varnish composition comprises:
- a latex polymer having a weight averaged molecular weight Mw of greater than 50 000;
- a polymeric salt derived from an acidic polymer having a weight averaged molecular weight Mw in the range of 1000 to 50 000;
- water;
- and
- a co-solvent,
- wherein, the latex polymer and polymeric salt are present in amounts such that the ratio of latex polymer to polymeric salt by weight is in the range of greater than 1:1 to 8:1;
- and wherein the varnish composition further comprises:
- 0.1 wt % to 2 wt % surfactant;
- 0.1 wt % to 5 wt % wax;
- 5 wt % to 45 wt % of the latex polymer;
- 1 wt % to 25 wt % of the polymeric salt;
- 40 wt % to 90 wt % of the water;
- and
- 2 wt % to 60 wt % of the co-solvent,
- by total weight of the composition.
16 more elements
A piezo-actuatable printhead comprising:
- a fluid chamber comprising a piezo-jettable varnish composition;
- and
- an orifice in fluid communication with the fluid chamber such that the varnish composition is jettable from the orifice,
- wherein, the piezo-jettable varnish composition comprises:
- a latex polymer having a weight averaged molecular weight Mw of greater than 50 000;
- a polymeric salt derived from an acidic polymer having a weight averaged molecular weight Mw in the range of 1000 to 50 000;
- water;
- and
- a co-solvent,
- wherein, the latex polymer and polymeric salt are present in amounts such that the ratio of latex polymer to polymeric salt by weight is in the range of greater than 1:1 to 8:1;
- and wherein the varnish composition further comprises:
- 0.1 wt % to 2 wt % surfactant;
- 0.1 wt % to 5 wt % wax;
- 5 wt % to 45 wt % of the latex polymer;
- 1 wt % to 25 wt % of the polymeric salt;
- 40 wt % to 90 wt % of the water;
- and
- 2 wt % to 60 wt % of the co-solvent,
- by total weight of the composition.
16 more elements
Dependencies are inferred from the claim text.