Claims
- 1. An ink jet recording sheet for use in ink jet printing comprising a substrate having one or more nitrogen containing organic species applied to said substrate at the size press in the substantial absence of a pigment, said substrate having a Gurley porosity of from about 5 sec/100 ml to about 25.55 sec/100 ml, a pore diameter of from about 2 to about 3.5, and a photosize (HST) of from about 0.1 to about 74.
- 2. The recording sheet of claim 1 wherein said substrate is paper.
- 3. The recording sheet of claim 2 wherein said paper substrate has a Gurley porosity of from about 5 sec/100 ml to about 13.65 sec/100 ml.
- 4. The recording sheet of claim 3 wherein said Gurley porosity is from about 5 sec/100 ml to about 13.58 sec/100 ml.
- 5. The recording sheet of claim 4 wherein said Gurley porosity is from about 12.91 sec/100 ml to about 12.91 sec/100 ml.
- 6. The recording sheet of claim 5 and wherein said species is selected from the group consisting of polyalkylamine dicyandiamide copolymers, polyamines and poly[oxyethylene(dimethyliminio)ethylene(dimethyliominio)ethylene]dichlorides.
- 7. The recording sheet of claim 6 wherein said species is selected from the group consisting of polyalkylamine dicyandiamide copolymers.
- 8. The recording sheet of claim 2 wherein said paper substrate has a HST of from about 0.1 second to about 55 seconds.
- 9. The recording sheet of claim 2 wherein said substrate has a basis weight of from about 20 to about 300 g/m2.
- 10. The recording sheet of claim 2 wherein the basis weight is from about 20 to about 300 g/m2.
- 11. The recording sheet of claim 2 wherein the basis weight is from about 50 to about 200 g/m2.
- 12. The recording sheet of claim 2 wherein the basis weight is from about 60 to about 120 g/m2.
- 13. The recording sheet of claim 2 wherein said sheet has a density loss (“DL %”) is from about −10% to about 10%.
- 14. The recording sheet of claim 2 wherein said DL % is from about −5% to about 10%.
- 15. The recording sheet of claim 2 wherein said DL % is from about 0% to about 10%.
- 16. The recording sheet of claim 2 wherein said sheet has a percent bleed (“% B”) equal to or less than about 10%.
- 17. The recording sheet of claim 2 wherein said % B is equal to or less than about 5%.
- 18. The recording sheet of claim 2 wherein said % B is equal to or less than about 2%.
- 19. The recording sheet of claim 2 wherein said % B is about 0%.
- 20. The recording sheet of claim 2 having a wet-rub (“WR”) equal to or less than about 0.1 optical density units (ODU).
- 21. The recording sheet of claim 2 wherein the WR is equal to or less than about 0.06 ODU.
- 22. The recording sheet of claim 2 wherein the WR is equal to or less than about 0.04 ODU.
- 23. The recording sheet of claim 2 wherein the WR is equal to or less than about 0.04 ODU.
- 24. The recording sheet of claim 1 wherein said pore diameter is from about 2.4 to about 3.3.
- 25. The recording sheet of claim 24 wherein said pore diameter is from about 2.4 to about 3.1.
- 26. The recording sheet of claim 25 wherein said pore diameter is from about 2.6 to about 3.0.
- 27. The recording sheet of claim 1 wherein said HST is from about 1 second to about 74 seconds.
- 28. The recording sheet of claim 1 wherein the amount of surface in contact with said surface is at least about 1 g/m2.
- 29. The recording sheet of claim 28 wherein said amount is from about 0.5 to about 3 g/m2.
- 30. The recording sheet of claim 29 wherein said amount is from about 1 to about 2 g/m2.
- 31. The recording sheet of claim 1 wherein said nitrogen containing organic specie is selected from the group consisting of cationic polymers and oligomers having a molecular weight equal to or less than 100,000.
- 32. The recording sheet of claim 31 wherein said molecular weight is equal to or less than about 80,000.
- 33. The recording sheet of claim 32 wherein said molecular weight is from about 10,000 to about 50,000.
- 34. The recording sheet of claim 31 wherein said species is selected from the group consisting of polyalkylamine dicyandiamide copolymers, polyamines and poly[oxyethylene(dimethyliminio)ethylene(dimethyliominio)ethylene]dicholorides.
- 35. The recording sheet of claim 31 wherein said species is selected from the group consisting of polyalkylamine dicyandiamide copolymers and poly[oxyethylene(dimethyliminio)ethylene(dimethyliominio)ethylene]dichlorides.
- 36. The recording sheet of claim 35 wherein said specifies is selected from the group consisting of polyalkylamine dicyandiamide copolymers.
- 37. The recording sheet of claim 1 which further comprises one or more starches admixed with said one or more nitrogen containing species.
- 38. The recording sheet of claim 37 wherein said one or more starches are selected from the group consisting of modified starches.
- 39. The recording sheet of claim 38 wherein said one or more starches are selected from the group consisting of cationic modified starches, chemically modified starches, non-ionic starches or a combination thereof.
- 40. The recording sheet of claim 39 wherein said one or more starches are selected from the group consisting of cationic modified starches, chemically modified starches or a combination thereof.
- 41. The recording sheet of claim 38 wherein said one or more starches are selected from the group consisting of cationic modified starches.
- 42. The recording sheet of claim 38 wherein said one or more starches are selected from the group consisting of chemically modified starches.
- 43. The recording sheet of claim 38 wherein said one or more starches are selected from the group consisting of ethylated starches, AP Pearl starches or a combination thereof.
- 44. The recording sheet of claim 37 wherein the weight ratio of species to starches is equal to or greater than about 10% to 200%.
- 45. The recording sheet of claim 37 wherein said weight ratio is from about 10% to 100%.
- 46. The recording sheet of claim 37 wherein said weight ratio is from about 20% to about 80%.
- 47. The recording sheet of claim 37 wherein said weight ratio is from about 30% to about 50%.
- 48. The recording sheet of claim 1 that exhibits better waterfastness than does a paper based ink jet recording sheet that is the same except that it does not contain the nitrogen containing species applied at the size press in the substantial absence of a pigment, when the waterfastness is evaluated by at least one method selected from the group consisting of density loss, wet rub and bleed.
- 49. An uncoated ink jet recording sheet for use in ink jet printing comprising a substrate having one or more nitrogen containing organic species applied to said substrate at the size press in the substantial absence of a pigment, said substrate having Gurley porosity is from about 5 sec/100 ml to about 25.55 sec/10 ml, a pore diameter is from about 2.2 to about 3.3, an HST from about 0.1 seconds to 74 seconds, and a basis weight is from about 60 to about 120 g/m2.
- 50. The recording sheet of claim 49 that exhibits better waterfastness than does a paper based ink jet recording sheet that is the same except that it does not contain the nitrogen containing species applied at the size press in the substantial absence of a pigment, when the waterfastness is evaluated by at least one method selected from the group consisting of density loss, wet rub and bleed.
- 51. An uncoated paper ink jet recording sheet prepared by the process comprising:a. providing an aqueous pulp suspension; b. sheeting and drying the aqueous pulp suspension to obtain a dried paper; c. applying to at least one surface of the dried paper at the size press an aqueous composition comprising one or more nitrogen containing organic species and one or more starches in the substantial absence of a pigment; and d. drying the paper to form the paper ink jet recording sheet.
- 52. The recording sheet of claim 51 that exhibits better waterfastness than does a paper based ink jet recording sheet that is the same except that it does not contain the nitrogen containing species applied at the size press in the substantial absence of a pigment, when the waterfastness is evaluated by at least one method selected from the group consisting of density loss, wet rub and bleed.
Parent Case Info
This is a continuation-in-part of application Ser. No. 09/310,654, filed May 12, 1999, now abandoned.
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Number |
Name |
Date |
Kind |
4980025 |
Andersson et al. |
Dec 1990 |
A |
6051107 |
Varnell |
Apr 2000 |
A |
6242082 |
Mukoyoshi et al. |
Jun 2001 |
B1 |
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Number |
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0 673 779 |
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Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/310654 |
May 1999 |
US |
Child |
09/567920 |
|
US |