Printable recording media

Patent metadata

Field	Value
Publication number	US-9873279-B2
Application number	US-201415307298-A
Country	US
Kind code	B2
Filing date	Jul 30, 2014
Priority date	Jul 30, 2014
Publication date	Jan 23, 2018
Grant date	Jan 23, 2018

Abstract

A printable recording media containing a substrate and an ink receiving layer including an aqueous mixture of about 50 to about 99 wt % of an UV curable polyurethane dispersion and about 1 to about 50 wt % of a photo-initiator by total dry weight of said ink receiving layer. Also disclosed herein a method for making the printable recording media.

First claim

The invention claimed is:

1. A printable recording medium, comprising:
a substrate; and
an ink receiving layer including an aqueous mixture of about 50 wt % to about 99 wt % of an UV curable polyurethane dispersion and about 1 wt % to about 50 wt % of a photo-initiator by total dry weight of said ink receiving layer, wherein a polyurethane polymer of the UV curable polyurethane dispersion contains an unsaturated double bond.

2. The printable recording medium of claim 1 wherein the aqueous mixture of the ink receiving layer includes water in the range of about 10 wt % to about 90 wt % of the total weight of the ink receiving layer.

3. The printable recording medium of claim 1 wherein the UV curable polyurethane dispersion is present, in the ink receiving layer, in an amount representing from about 60 wt % to about 95 wt % of the total dry weight of the ink receiving layer.

4. The printable recording medium of claim 1 wherein the photo-initiator is present, in the ink receiving layer, in an amount representing from about 5 wt % to about 40 wt % of the total dry weight of the ink receiving layer.

5. The printable recording medium of claim 1 wherein a weight ratio of the UV curable polyurethane dispersion to the photo-initiator, in the ink receiving layer, is between 80/20 and 99/1.

6. The printable recording medium of claim 1 wherein a weight ratio of the UV curable polyurethane dispersion to the photo-initiator, in the ink receiving layer, is between 85/25 and 95/5.

7. The printable recording medium of claim 1 wherein the UV curable polyurethane dispersion is an aliphatic acrylate polyurethane dispersion or an aliphatic polyurethane dispersion.

8. The printable recording medium of claim 1 wherein the substrate is a paper base substrate.

9. The printable recording medium of claim 1 wherein the ink receiving layer is applied to one side of the substrate and forms a layer having a coat-weight in the range of about 0.5 gsm to about 30 gsm.

10. The printable recording medium of claim 1 wherein the ink receiving layer is applied to both sides of the substrate and has a coat-weight in the range of about 1 gsm to about 5 gsm per side.

11. A method for making a printable recording medium, comprising:
(a) providing a substrate;
(b) applying an ink receiving layer, that contains an aqueous mixture of about 50 wt % to about 99 wt % of a UV curable polyurethane dispersion and about 1 wt % to about 50 wt % of a photo-initiator by total dry weight of the ink receiving layer, on one side of the substrate, wherein a polyurethane polymer of the UV curable polyurethane dispersion contains an unsaturated double bond; and
(c) drying said ink receiving layer.

12. The method for making a printable recording medium according to claim 11 wherein the ink receiving layer is applied on both sides of the substrate.

13. A printed article, comprising:
(a) a printable recording medium having a substrate and an ink receiving layer including an aqueous mixture of about 50 wt % to about 99 wt % of a UV curable polyurethane dispersion and about 1 wt % to about 50 wt % of a photo-initiator by total dry weight of the ink receiving layer, wherein a polyurethane polymer of the UV curable polyurethane dispersion contains an unsaturated double bond; and
(b) an ink composition applied on said medium, in order to from a printed image, where photo energy has been applied to the ink composition once printed, said photo energy having a frequency and energy level suitable for curing the ink composition and the ink receiving layer.

14. The printed article of claim 13 wherein the UV curable polyurethane dispersion of the ink receiving layer is an aliphatic acrylate polyurethane dispersion or an aliphatic polyurethane dispersion.

15. The printed article of claim 13 wherein a weight ratio of the UV curable polyurethane dispersion to the photo-initiator, in the ink receiving layer, is between 85/25 and 95/5.

16. The printable recording medium of claim 1 wherein a weight ratio of the UV curable polyurethane dispersion to the photo-initiator, in the ink receiving layer, is 90/10.

17. The printable recording medium of claim 1 wherein the photo-initiator is selected from the group consisting of phenyl-bis(2,4,6-trimethylbenzoyl)-phosphineoxide), bis-acyl-phosphineoxide, and combinations thereof.

18. The printable recording medium of claim 1 wherein the ink receiving layer further includes a photosensitizer.

19. The printed article of claim 13 wherein the ink composition is a water-based ink composition.

Assignees

• Hewlett Packard Development Co Lp

Inventors

• Niu Bor-Jiunn
• Chen Tao
• Courtenay Silke

Classifications

• B41J11/002

  Curing or drying the ink on the copy materials, e.g. by heating or irradiating · CPC title

• B41M5/5281 Primary

  Polyurethanes or polyureas · CPC title

• B41M2205/34

  Both sides of a layer or material are treated, e.g. coated · CPC title

• B41M5/5209

  Coatings prepared by radiation-curing, e.g. using photopolymerisable compositions · CPC title

• B41M5/529 Primary

  characterised by the use of fluorine- or silicon-containing organic compounds · CPC title