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1. US20090122127 - INKJET RECEIVER

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

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Claims

1. An inkjet 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 2, of which said first inorganic particulate material at least 70% by weight is alumina, and a first binder; and
a second layer, located between said first layer and said support, said second layer comprising a second inorganic particulate material in a dry weight amount of from 10 to 40 g/m 2, of which said second inorganic particulate material at least 65% is fumed silica, silica gel or a mixture thereof, and a second binder.
2. (canceled)
3. (canceled)
4. An inkjet receiver as claimed in claim 1, wherein said first layer comprises said first inorganic particulate material in a dry weight amount of from 1 to 5 g/m 2.
5. An inkjet receiver as claimed in claim 1, wherein the thickness of said first layer is from 2 to 8 μm.
6. An inkjet receiver as claimed in claim 1, wherein said ink-receiving pack comprises a third layer, located between said second layer and said, support, said third layer comprising a third 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/m 2.
7. An inkjet receiver as claimed in claim 6, wherein the ink-receiving pack comprises a total dry weight amount of inorganic particulate material of from 20 to 80 g/m 2.
8. An inkjet receiver as claimed in claim 1, wherein said second layer comprises fumed silica in a dry weight amount of from 15 to 25 g/m 2.
9. An inkjet receiver as claimed in claim 6, wherein said third inorganic particulate material comprises greater than or equal to 50% by weight of one or more calcium carbonates.
10. (canceled)
11. An inkjet receiver as claimed in claim 9 wherein said 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 inkjet receiver as claimed in claim 1, wherein said first inorganic particulate material comprises greater than or equal to 95% alumina.
13. An inkjet receiver as claimed in claim 12, wherein said alumina is filmed alumina.
14. An inkjet receiver as claimed in claim 1, wherein said second inorganic particulate material comprises greater than or equal to 85% fumed silica and/or silica gel.
15. An inkjet receiver as claimed in claim 1, wherein said first binder in said first layer is present in an amount of 0.5 to 10% of said dry weight of said layer, said second binder in said second layer is present in an amount of 5 to 15% of said dry weight of said layer and said third binder in said third layer, when present, is in an amount of 1 to 8% of said dry weight of said layer.
16. An inkjet receiver as claimed in claim 15, wherein said first and second binders in said-first and second layers is polyvinyl alcohol and said third binder in said, optional, third layer is a mixture of polyvinyl alcohol and a latex polymer binder.
17. An inkjet receiver as claimed in claim 1, wherein said first layer further comprises a mordant in an amount relative to said first inorganic particulate material of from 10:90 to 30:70 by dry weight.
18. An inkjet receiver as claimed in claim 1, which further comprises a subbing layer located between said ink-receiving pack and said support, said subbing layer comprising 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/m 2.
19. (canceled)
20. An inkjet receiver as claimed in claim 1, 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/m 2, of which said first inorganic particulate material at least 95% by weight is alumina, and a first binder; and
a second layer, located between said first layer and said support, said second layer comprising a second inorganic particulate material in a dry weight amount of from 15 to 25 g/m 2, of which said second inorganic particulate material at least 65% is filmed silica, silica gel or a mixture thereof, and a second binder; and
a third layer located between said second layer and said support, said third layer comprising a third inorganic particulate material in a dry weight amount of from 20 to 30 g/m 2, of which said third inorganic particulate material at least 50% is calcium carbonate
21. A method of manufacturing an inkjet 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 2, of which said first inorganic particulate material at least 70% by weight is alumina, and a first binder; and a second layer, located between said first layer and said support, said second layer comprising a second inorganic particulate material in a dry weight amount of from 10 to 40 g/m 2, of which said second inorganic particulate material at least 65% is fumed silica, silica gel or a mixture thereof, and a second binder
said method comprising
coating a second coating formulation onto said support to form said second layer on said support, said second coating formulation comprising an aqueous dispersion of said second inorganic particulate material and said second binder, said second inorganic particulate material being coated in an amount of from 10 to 40 g/m 2, 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 said first layer above said second layer, said first coating formulation comprising an aqueous dispersion of said first inorganic particulate material and said second binder, said first inorganic particulate material being coated in an amount of from 0.5 to 10 g/m 2, of which at least 70% is alumina; and
drying the coated support,
wherein said first and second coating formulations are coated onto said 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 said support to form a third layer on said support prior to coating said second layer onto said support, said third coating formulation comprising an aqueous dispersion of a third inorganic particulate material and a third binder,
wherein said second and third coating formulations are coated onto said support simultaneously or sequentially.
23. A method as claimed in claim 21, which further comprises
coating a subbing formulation onto said support and drying to form a subbing layer, prior to coating any of said first, said second or any third coating formulations onto said 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 said printer with an inkjet 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 2, of which said first inorganic particulate material at least 70% by weight is alumina, and a first binder; and
a second layer, located between said first layer and said support, said second layer comprising a second inorganic particulate material in a dry weight amount of from 10 to 40 g/m 2 of which said second inorganic particulate material at least 65% is fumed silica, silica gel or a mixture thereof, and a second binder; and
causing a set of digital data signals corresponding to a desired printed image to be sent to said printer.
25. (canceled)
26. An inkjet printing system comprising an inkjet printer and a receiver as described in claim 1.