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1. WO2007099281 - SUPPORT D'IMPRESSION PAR JET D'ENCRE

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]
CLAIMS:

1. An inkj et receiver having
a support, upon which is provided an ink-receiving pack, said ink-receiving pack comprising
a first, image-receiving, layer comprising a first inorganic particulate material in a dry weight amount of from 0.5 to 10 g/m , of which first inorganic particulate material at least 70% by weight is alumina, and a binder; and
a second layer, located between the first layer and the support, said second layer comprising a second inorganic particulate material in a dry weight amount of from 10 to 40 g/m2, of which second inorganic particulate material at least 65% is fumed silica, silica gel or a mixture thereof, and a binder.

2. An inkjet receiver as claimed in claim 1 , wherein the ink-receiving pack comprises a total dry weight amount of inorganic particulate material of from 20 to 80 g/m .

3. An inkjet receiver as claimed in either of claims 1 and 2, wherein the second layer is adjacent to the first layer.

4. An inkjet receiver as claimed in any one of the preceding claims, wherein the first layer comprises the first inorganic particulate material in a dry weight amount of from 1 to 5 g/m2.

5. An inkjet receiver as claimed in any one of the preceding claims, wherein the thickness of the first layer is from 2 to 8 μm.

6. An inkjet receiver as claimed in any one of the preceding claims, wherein the ink-receiving pack comprises a third layer, located between the second layer and the support, said third layer comprising a binder and a third inorganic particulate material or mixture of inorganic particulate materials, being present in a dry weight amount of from 10 to 30 g/m2.

7. An inkjet receiver as claimed in claim 6, wherein the third layer is adjacent to the second layer.

8. An inkjet receiver as claimed in any one of the preceding claims, wherein the second layer comprises turned silica in a dry weight amount of from 15 to 25 g/m2.

9. An inkjet receiver as claimed in any one of claims 6 to 8, wherein the third inorganic particulate material comprises greater than or equal to 50% by weight of one or more calcium carbonates.

10. An inkjet receiver as claimed in claim 9, wherein the third inorganic particulate material comprises greater than or equal to 85% calcium carbonate.

11. An inkjet receiver as claimed in either of claims 9 and 10, wherein the third inorganic particulate material comprises a blend of calcium carbonate and a silica in a dry weight ratio of from 98:2 to 90:10.

12. An inkj et receiver as claimed in any one of the preceding claims, wherein the first inorganic particulate material comprises greater than or equal to 95% alumina.

13. An inkjet receiver as claimed in any one of the preceding claims, wherein the alumina is fumed alumina.

14. An inkjet receiver as claimed in any one of the preceding claims, wherein the second inorganic particulate material comprises greater than or equal to 85% fumed silica and/or silica gel.

15. An inkjet receiver as claimed in any one of the preceding claims, wherein the binder in the first layer is present in an amount of 0.5 to 10% of the dry weight of the layer, the binder in the second layer is present in an amount of 5 to 15% of the dry weight of the layer and the binder in the third layer, when present, is in an amount of 1 to 8% of the dry weight of the layer.

16. An inkjet receiver as claimed in claim 15, wherein the binder in the first and second layers is polyvinyl alcohol and the binder in the, optional, third layer is a mixture of polyvinyl alcohol and a latex polymer binder.

17. An inkjet receiver as claimed in any one of the preceding claims, wherein the first layer further comprises a mordant in an amount relative to the first inorganic particulate material of from 10:90 to 30:70 by dry weight.

18. An inkjet receiver as claimed in any one of the preceding claims, which further comprises a subbing layer located between the ink-receiving pack and the support.

19. An inkjet receiver as claimed in claim 18, wherein the subbing layer comprises a boric acid, borate, or a derivative or salt thereof and a polymer material in a total dry laydown of from 0.5 to 3 g/m2.

20. An inkjet receiver as claimed in any one of the preceding claims, which comprises
a support, upon which is provided an ink-receiving pack, said ink-receiving pack comprising
a first, image-receiving, layer comprising a first inorganic particulate material in a dry weight amount of from 1 to 5 g/m2, of which first inorganic particulate material at least 95% by weight is alumina, and a binder; and a second layer, located between the first layer and the support, said second layer comprising a second inorganic particulate material in a dry weight amount of from 15 to 25 g/m2, of which second inorganic particulate material at least 65% is fumed silica, silica gel or a mixture thereof, and a binder; and
a third layer located between the second layer and the support, said third layer comprising a third inorganic particulate material in a dry weight amount of from 20 to 30 g/m2, of which third inorganic particulate material at least 50% is calcium carbonate.

21. A method of manufacturing an inkjet receiver as defined in any one of the preceding claims, said method comprising
coating a second coating formulation onto a support to form a second layer on said support, said second coating formulation comprising an aqueous dispersion of a second inorganic particulate material and a binder, said second inorganic particulate material being coated in an amount of from 10 to 40 g/m2, of which at least 65% is fumed silica, silica gel or a mixture thereof; and
coating onto said second layer a first coating formulation to form a first layer above said second layer, said first coating formulation comprising an aqueous dispersion of a first inorganic particulate material and a binder, said first inorganic particulate material being coated in an amount of from 0.5 to 10 g/m2, of which at least 70% is alumina; and
drying the coated support,
wherein the first and second coating formulations are coated onto the support simultaneously or sequentially.

22. A method of manufacturing an inkjet receiver as claimed in claim 21, which further comprises
coating a third coating formulation onto the support to form a third layer on said support prior to coating the second layer onto the support, said third coating formulation comprising an aqueous dispersion of a third inorganic particulate material and a binder,
wherein the second and third coating formulations are coated onto the support simultaneously or sequentially.

23. A method as claimed in either of claims 21 and 22, which further comprises
coating a subbing formulation onto the support and drying to form a subbing layer, prior to coating any of the first, second or third coating formulations onto the support.

24. A method of printing, said method comprising the steps of
providing an inkjet printer capable of responding to digital data signals;
providing said printer with ink;
providing the printer with an inkjet receiver as defined in any one of claims 1 to 20; and
causing a set of digital data signals corresponding to a desired printed image to be sent to said printer.

25. A printed receiver comprising an image printed onto a receiver as defined by any one of claims 1 to 20 by the method as defined in claim