Hybrid media sheets

Patent metadata

Field	Value
Publication number	US-10639923-B2
Application number	US-201415119110-A
Country	US
Kind code	B2
Filing date	Mar 19, 2014
Priority date	Mar 19, 2014
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

The present disclosure is drawn to hybrid media sheets, ink-receiving layer compositions for coating on a media substrate, and a method of making hybrid media sheets. The hybrid media sheet scan have a media substrate with a front barrier layer, a back barrier layer, an adhesion promoting layer applied to the front barrier layer, and an ink-receiving layer applied to the adhesion promoting layer. The ink-receiving layer can include a water-soluble polymer, a mordant, and particles of a metal- or semimetal-oxide.

First claim

What is claimed is:

1. A method of making a hybrid media sheet, comprising:
coating a back side of a media substrate with a back barrier layer comprising a first polyolefin and a front side of the media substrate with a front barrier layer comprising a second polyolefin, wherein a thickness ratio of the front barrier layer to the back barrier layer is from 1:1.5 to 1:3;
coating an adhesion promoting subbing layer onto the front barrier layer, the adhesion promoting subbing layer comprising polyvinyl alcohol; and
coating an ink-receiving layer onto the adhesion promoting subbing layer, the ink-receiving layer comprising a polyvinyl alcohol, a mordant, and particles of a metal- or semimetal-oxide, wherein the mordant comprises a water-soluble cationic polymer and wherein the particles of metal- or semi-metal oxide comprise colloidal alumina.

2. The method of claim 1 , wherein the adhesion promoting subbing layer and ink-receiving layer are coated at a thickness such that a combined thickness of the front barrier layer, adhesion promoting subbing layer, and ink-receiving layer is about equal to a thickness of the back barrier layer.

3. The method of claim 1 , wherein the first polyolefin comprises low density polyethylene and the second polyolefin comprises a combination of high density polyethylene and low density polyethylene.

4. The method of claim 1 , wherein the front barrier layer has a basis weight from about 12 g/m 2 to about 30 g/m 2 and the back barrier layer has a weight from about 20 g/m 2 to about 40 g/m 2 , with the proviso that the front barrier layer is thinner than the back barrier layer.

5. The method of claim 1 , wherein the back barrier layer comprises low density polyethylene and an amount of high density polyethylene at from 20% to 70% by weight, and the front barrier layer comprises low density polyethylene and either no high density polyethylene or an amount of high density polyethylene that is less than the amount in the back barrier layer.

6. The method of claim 1 , wherein the adhesion promoting subbing layer includes the polyvinyl alcohol and from about 0.1% to about 10% by weight of a cross-linking agent.

7. The method of claim 1 , wherein the particles of the metal- or semimetal-oxide are present at a particles to water-soluble cationic polymer ratio of about 1:1 to about 1:10 by weight.

8. The method of claim 1 , wherein the particles of the metal- or semimetal-oxide further comprise calcium carbonate, synthetic non-crystalline silica, colloidal silica, alumina, pseudo boehmite, aluminum hydroxide, or a combination thereof.

9. The method of claim 1 , wherein the particles of the metal- or semimetal-oxide further comprises cationic superfine colloidal silica.

10. The method of claim 1 , wherein the mordant further comprises a metal salt.

11. The method of claim 1 , wherein the media substrate comprises raw base paper and has a surface roughness of less than 4 μm.

12. The method of claim 1 , wherein a ratio of the mordant to the polyvinyl alcohol of the ink-receiving layer is from about 1:5 to about 1:25 by weight.

13. The method of claim 1 , wherein the polyvinyl alcohol of the ink-receiving layer is a mixture of polyvinyl alcohol compounds each having from 60% to 99% hydrolysis.

14. The method of claim 1 , wherein the mordant of the ink-receiving layer comprises a polyethyleneimine, a polyallylamine, a polyvinylamine, a dicyandiamide-polyalkylenepolyamine condensate, a polyalkylenepolyamine-dicyandiamideammonium condensate, a dicyandiamide-formalin condensate, an addition polymer of epichlorohydrin-dialkylamine, a polymer of diallyldimethylammoniumchloride (“DADMAC”), a copolymer of diallyldimethylammoniumchloride-SO 2 , a polyvinylimidazole, a polyvinylpyrrolidone, a copolymer of vinylimidazole, a polyamidine, chitosan, a cationized starch, a polymer of vinylbenzyltrimethylammoniumchloride, (2-methacryloyloxyethyl)trimethyl-ammoniumchloride, a polymer of dimethylaminoethylmethacrylate, a polyvinylalcohol with a pendant quaternary ammonium salt, or a combination thereof.

15. The method of claim 1 , wherein the water-soluble cationic polymer is a polymer of diallyldimethylammoniumchloride.

Assignees

• Hewlett Packard Development Co

Inventors

• Fu Xulong
• Yu Haowen
• Cromer Bruce L
• Selensky Ronald J

Classifications

• B41M5/502

  characterised by structural details, e.g. multilayer materials (supports, backcoats or intermediate layers for thermal dye transfer donor and receiver sheets B41M5/41, B41M5/42) · CPC title

• C04B41/0018

  Coating or impregnating "in situ", e.g. impregnating of artificial stone by subsequent melting of a compound added to the artificial stone composition · CPC title

• B41M5/506

  Intermediate layers · CPC title

• B41M5/504

  Backcoats · CPC title

• B41M5/5245

  characterised by the use of polymers containing cationic or anionic groups, e.g. mordants · CPC title