Hybrid media sheets

• US 10,639,923 B2
• Filed: 03/19/2014
• Issued: 05/05/2020
• Est. Priority Date: 03/19/2014
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Fu, Xulong, Yu, Haowen, Cromer, Bruce L., Selensky, Ronald J.
• Primary Examiner(s): Shewareged, Betelhem
• Application Number:
  US15/119,110
• Publication Number:
  US 20170050457A1
• Time in Patent Office: 2,239 Days
• CPC Class Codes: B41M 2205/34 Both sides of a layer or material are treated, e.g. coated
• CPC Class Codes: B41M 2205/36 Backcoats; Back layers
• CPC Class Codes: B41M 2205/38 Intermediate layers; Layers between substrate and imaging layer
• CPC Class Codes: B41M 5/50 Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording printing on organic plastics using a printer's form B41M1/30; printing on pre-treated paper with a printer's form B41M1/36
• CPC Class Codes: B41M 5/502 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 Class Codes: B41M 5/504 Backcoats
• CPC Class Codes: B41M 5/506 Intermediate layers
• CPC Class Codes: B41M 5/508 Supports
• CPC Class Codes: B41M 5/52 Macromolecular coatings
• CPC Class Codes: B41M 5/5218 characterised by inorganic additives, e.g. pigments, clays
• CPC Class Codes: B41M 5/5245 characterised by the use of polymers containing cationic or anionic groups, e.g. mordants
• CPC Class Codes: B41M 5/5254 characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
• CPC Class Codes: C04B 41/0018 Coating or impregnating "in situ", e.g. impregnating of artificial stone by subsequent melting of a compound added to the artificial stone composition

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.

Claims

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/m² to about 30 g/m² and the back barrier layer has a weight from about 20 g/m² to about 40 g/m², 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 μ

m.

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-SO₂, 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.