Ink-jet media having an ink-vehicle permeable coating and a microporous coating

1. An ink-jet printable medium, comprising:

an absorbent substrate having a front surface and a back surface;

a radiation-cured, ink-vehicle permeable coating overlying the front surface of the substrate, said radiation-cured, ink-vehicle permeable coating allowing said ink-vehicle to permeate through said coating and into said underlying substrate;

said medium having a Cobb absorption slope of greater than 0.2 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes; and a microporous ink-receptive coating overlying the ink-vehicle permeable coating.

2. The medium of claim 1 further comprising a polymeric curl-controlling coating overlying the back surface of the substrate.

3. The medium of claim 1 , further comprising a protective coating overlying the microporous ink-receptive coating.

4. The medium of claim 1 , wherein the substrate is selected from the group consisting of paper substrates, polymer substrates, synthetic fiber substrates, and composite substrates having a backing sheet and an absorbent coating overlying the backing sheet.

5. The medium of claim 1 having a surface gloss of at least 35% measured at 60 degrees.

6. The medium of claim 1 wherein said radiation-cured, ink-vehicle permeable coating is applied with a coating weight between about 2 g/m 2 and about 10 g/m 2 .

7. The medium of claim 6 wherein said radiation-cured, ink-vehicle permeable coating is applied with a coating weight of about 5 g/m 2 .

8. The medium of claim 1 wherein said micro porous ink-receptive coating is applied with a coating weight between about 8 g/m 2 and about 38 g/m 2 .

9. The medium of claim 8 wherein said micro porous ink-receptive coating is applied with a coating weight between about 18 g/m 2 and about 32 g/m 2 .

10. The medium of claim 1 wherein said micro porous ink-receptive coating is applied with a coating weight of about 25 g/m 2 .

11. The medium of claim 1 wherein an acrylate-based material is contained in said radiation-cured, ink-vehicle permeable coating.

12. The medium of claim 1 wherein said micro porous ink-receptive layer comprises a dispersion of particles and a polymer binder.

13. The medium of claim 1 having a Cobb absorption slope of greater than 0.5 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes.

14. The medium of claim 1 having a Cobb absorption slope of about 0.8 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes.

15. The medium of claim 4 having a Cobb absorption slope of greater than 0.5 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes.

16. The medium of claim 4 having a Cobb absorption slope of about 0.8 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes.

17. The medium of claim 5 having a Cobb absorption slope of greater than 0.5 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes.

18. The medium of claim 5 having a Cobb absorption slope of about 0.8 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes.

19. The medium of claim 11 having a Cobb absorption slope of greater than 0.5 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes.

20. The medium of claim 11 having a Cobb absorption slope of about 0.8 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes.

21. The medium of claim 5 wherein an acryl ate-based material is contained in said ink-vehicle permeable coating.

22. The medium of claim 21 having a Cobb absorption slope of greater than 0.5 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes.

23. The medium of claim 21 having a Cobb absorption slope of about 0.8 g/m 2 /min within in a test range of about 3 minutes to about 30 minutes.

24. The medium of claim 1 wherein an acrylate-based material is contained in said radiation-cured, ink-vehicle permeable coating.