Arkwright, Inc.

Joshua D Rundus

Steven J Sargeant

Shengmei Yuan

Nathan Jones

The present invention is directed to an ink jet recording medium. The ink jet recording medium has an ink absorbent layer provided upon a substrate, with a humidity barrier layer provided upon the ink absorbent layer. The ink absorbent layer comprises a blend of poly(2-ethyl-2-oxazoline), poly(vinyl pyrollidone), and a hydrophobic polymer, and the humidity barrier layer comprises a blend of polyethylene oxide and boehmite alumina. The ink jet recording medium is fast drying over different relative humidity conditions, making it particularly suitable for high speed printing applications.

Fast drying ink jet recording medium having a humidity barrier layer

An ink sorptive coating for ink jet recording media, and ink jet recording media that contain the same, wherein the ink jet recording medium contains a substrate having an ink sorptive layer coated thereon. The ink sorptive coating layer contains (1) a polymer or copolymer that comprises a polyalkyl oxazoline monomer unit or a polyphenyl oxazoline monomer unit, or a copolymer that comprises a polyalkyl oxazoline monomer unit and a polyphenyl oxazoline monomer unit, and (2) a hydrophilic, water-insoluble polymer or copolymer which preferably contains hydroxyl groups. The ink sorptive coating provides the ink jet media with improved image quality, dry time and a low degree of curl.

Ink jet recording medium

A water-insoluble liquid-absorbent material comprising a cross-linked matrix containing a polymer having at least two cross-linkable functional end groups and substantially free of cross-linking functional groups elsewhere within the polymer that are crosslinked with a cross-linking agent having a functionality greater than two, and in combination therewith, a dye-fixing agent having at least one reactive functional group. An ink jet recording medium having a coating of the water-insoluble liquid-absorbent material on a surface thereof is also provided.

Liquid absorbent material

The present invention is directed to an ink jet recording media containing a substrate having a liquid sorptive coating coated on a surface thereof. The liquid sorptive coating contains a hydroxyalkyl methylcellulose and at least one nitrogen-containing component. The hydroxyalkyl methylcellulose is preferably present in the coating in an amount of about 70 to about 98%, based on the amount of solids in the coating. The hydroxyalkyl methylcellulose also preferably has a hydroxyalkyl content of from about 3% to about 15%, preferably about 7% to about 12%, and a methoxyl content of from about 15% to about 28%, preferably about 19% to about 24%.

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San Dimas, CA, United States of America

Joshua D Rundus