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US 11,034,856 B2Granted
Primer compositions
AssigneeHewlett-Packard Development Company, L.P.
InventorsBor-Jiunn Niu, Tao Chen, Haigang Chen, Silke Courtenay
Life of this patent
Estimating the term…
Abstract
The present disclosure is drawn to primer compositions, which can include a binder including polyvinyl alcohol, starch nanoparticles, and a polyurethane dispersion. The primer competitions can also include a cationic salt and water.
Claims20
A method of coating a media substrate, comprising applying a primer composition to a media substrate to form an ink-receiving primer layer thereon, wherein the ink-receiving primer layer comprises:
- from 5 wt % to 70 wt % binder based on all dry components of the ink-receiving primer layer, the binder including polyvinyl alcohol, starch nanoparticles, and a self-crosslinkable polyurethane dispersion;
- a cationic salt;
- and
- from 0.01 wt % to 10 wt % water based on a total weight of the ink-receiving primer layer,
- wherein the ink-receiving primer layer is devoid of inorganic pigment, or wherein the ink-receiving primer layer includes inorganic pigment in an amount of about 5 wt % or less based on all dry components of the primer layer.
2 more elements
A coated media substrate, comprising:
- a media substrate;
- and
- an ink-receiving primer layer coated on a surface of the media substrate, the ink-receiving primer layer, comprising:
- from 5 wt % to 70 wt % binder based on all dry components of the ink-receiving primer layer, the binder including polyvinyl alcohol, starch nanoparticles, and a self-crosslinkable polyurethane dispersion;
- a cationic salt;
- and
- from 0.01 wt % to 10 wt %0/water based on a total weight of the ink-receiving primer layer,
- wherein the ink-receiving primer layer is devoid of inorganic pigment, or wherein the ink-receiving primer layer includes inorganic pigment in an amount of about 5 wt % or less based on all dry components of the primer layer.
5 more elements
Dependencies are inferred from the claim text.