Surface treatment composition, inkjet printable article and method of making the same

Patent metadata

Field	Value
Publication number	US-9034953-B2
Application number	US-200813001421-A
Country	US
Kind code	B2
Filing date	Jun 27, 2008
Priority date	Jun 27, 2008
Publication date	May 19, 2015
Grant date	May 19, 2015

Abstract

A surface treatment composition for inkjet media includes: at least one surface sizing agent selected from the group consisting of starch, starch derivatives, polymeric materials, and combinations thereof; and an ink fixative selected from the group consisting of at least one high valence metallic salt, at least one high valence complex poly-salt, and combinations thereof. The ink fixative is present in the surface treatment composition from about 10 weight% to about 50 weight% of the surface treatment composition. The at least one high valence metallic salt and the at least one high valence complex poly-salt have a valence greater than divalent. Additionally included are a method of making and a system for printing the surface treated media; and an inkjet printable paper.

First claim

What is claimed is:

1. A surface treatment composition for inkjet media, consisting of:
at least one surface sizing agent selected from the group consisting of starch, starch derivatives, and combinations thereof;
an ink fixative selected from the group consisting of aluminum sulfate octadecahydrate, aluminum bromide hexahydrate, aluminum bromide pentadecyl hydrate, aluminum hexahydrate, aluminum iodide hexahydrate, aluminum formoacetate hydrate and polyaluminum hydroxychloride; and
water;
wherein the ink fixative is present in the surface treatment composition from about 10 weight % to about 50 weight % of the surface treatment composition.

2. The surface treatment composition of claim 1 wherein the ink fixative is present in the surface treatment composition from about 15 weight % to about 25 weight %.

3. The surface treatment composition of claim 1 wherein the at least one surface sizing agent comprises the starch derivatives, and wherein the starch derivatives are selected from the group consisting of potato derivatives, corn derivatives, tapioca derivatives, cationic starch, anionic starch, oxidized starch, starch esters, starch ethers, starch acetates, starch phosphates, and combinations thereof.

4. The surface treatment composition of claim 1 wherein the surface treatment composition is applied on the inkjet media, and wherein the inkjet media includes base stock, the base stock being selected from the group consisting of cellulose paper, polymeric film, and cellulose paper coated with polymeric materials on one or both sides.

5. The surface treatment composition of claim 4 wherein the base stock is cellulose paper selected from the group consisting of wood pulp, wood-free pulp, and combinations thereof.

6. The surface treatment composition of claim 1 wherein the surface treatment composition is applied on the inkjet media, and wherein the inkjet media includes base paper stock sized with internal sizing agents, the internal sizing agents being selected from the group consisting of rosin sizes, ketene dimers, ketene multimers, alkenylsuccinic anhydrides, and combinations thereof.

7. The surface treatment composition of claim 1 wherein the ink fixative is aluminum sulfate octadecahydrate.

8. The surface treatment composition of claim 1 wherein the ink fixative is polyaluminum hydroxychloride.

9. A method of making surface-treated inkjet media, the method comprising:
applying the surface treatment composition of claim 1 to a base stock treated with internal sizing agents.

10. The method according to claim 9 wherein the internal sizing agents are selected from the group consisting of carboxymethylcellulose; polyvinyl alcohol; methyl cellulose; alginates; waxes; wax emulsions; alkylketene dimer; alkyl succinic anhydride; alkenyl ketene dimer emulsion; emulsions of alkyl succinic anhydride with cationic starch; emulsions of alkenyl ketene dimer emulsion with cationic starch; alkyl succinic anhydride incorporating alum; rosin sizes; ketene multimers; water-soluble polymeric materials; water-dispersible polymeric materials; and combinations thereof;
and wherein the base stock treated with the internal sizing agents has a Cobb value in a range from about 20 gsm to about 50 gsm.

11. The method of claim 9 wherein the at least one surface sizing agent comprises the starch derivatives, and wherein the starch derivatives are selected from the group consisting of potato derivatives, corn derivatives, tapioca derivatives, cationic starch, anionic starch, oxidized starch, starch esters, starch ethers, starch acetates, starch phosphates, and combinations thereof.

12. A system of inkjet printing inkjet media treated with the surface treatment composition of claim 1 , the system comprising:
an inkjet printer;
pigment based ink; and
the inkjet media treated with the surface treatment composition of claim 1 .

13. Inkjet printable paper, comprising:
a base stock treated with internal sizing agents selected from the group consisting of carboxymethylcellulose; polyvinyl alcohol; methyl cellulose; alginates; waxes; wax emulsions; alkylketene dimer; alkyl succinic anhydride; alkenyl ketene dimer emulsion; emulsions of alkyl succinic anhydride with cationic starch; emulsions of alkenyl ketene dimer emulsion with cationic starch; alkyl succinic anhydride incorporating alum; rosin sizes; ketene multimers; water-soluble polymeric materials; water-dispersible polymeric materials; and combinations thereof, wherein the base stock treated with the internal sizing agents has a Cobb value in a range from about 20 gsm to about 50 gsm; and
a surface coated with the surface treatment composition of claim 1 .

14. The inkjet printable paper of claim 13 wherein the base stock is selected from the group consisting of cellulose paper, polymeric film, and cellulose paper coated with polymeric materials on one or both sides.

15. The inkjet printable paper of claim 13 wherein the base stock is cellulose paper selected from the group consisting of wood pulp, wood-free pulp, and combinations thereof.

Assignees

• Zhou Xiaoqi
• Hewlett Packard Development Co

Inventors

• Zhou Xiaoqi

Classifications

• B41M5/5218

  characterised by inorganic additives, e.g. pigments, clays · CPC title

• B41M5/0035 Primary

  Uncoated paper (paper making D21) · CPC title

• B41M5/5254

  characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers · CPC title

• B41M5/52

  Macromolecular coatings · CPC title

• B41M5/5236

  characterised by the use of natural gums, of proteins, e.g. gelatins, or of macromolecular carbohydrates, e.g. cellulose · CPC title