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1. WO2005009746 - FLUOROSURFACTANT ET PARTICULES COLLOIDALES DANS UN ELEMENT D'IMAGERIE

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

[ EN ]

CLAIMS:
1. An image-recording element comprising a support and an image-receiving layer, wherein said imaging receiving layer comprises anionic colloidal silica particles, hydrophilic polymeric binder, and fluorosurfactant, wherein said binder is present in an amount of between 2% and 15% by weight of said image-receiving layer, said image-recording element has a 60-degree gloss of greater than 25, and a dry time of less than 1 minute.

2. The image-recording element of claim 1 wherein said anionic colloidal silica particles have a median diameter of between 50 and 300 nm.

3. The image-recording element of claim 1 wherein said anionic colloidal silica particles have a median diameter of between 80 and 200 nm.

4. The image-recording element of claim 1 wherein the counterion for said anionic colloidal silica particles comprises potassium.

5. The image-recording element of claim 1 wherein at least 80% of said anionic colloidal silica particles have a diameter of within 35% smaller or larger than the median diameter of said anionic colloidal silica particles.

6. The image-recording element of claim 1 wherein said hydrophilic polymeric binder is poly( vinyl alcohol).

7. The image-recording element of claim 1 wherein said hydrophilic polymeric binder is poly( vinyl alcohol) having a percent hydrolysis of 77 to 90.

8. The image-recording element of claim 1 wherein said hydrophilic polymeric binder is poly( vinyl alcohol) having a viscosity for a 4% aqueous solution at 20° C of 2.5 to 12 cps.

9. The image-recording element of claim 1 wherein said hydrophilic polymeric binder is gelatin.

10. The image-recording element of claim 1 wherein said hydrophilic polymeric binder is poly( vinyl alcohol-co-ethyleneoxide).

11. The image-recording element of claim 1 wherein said fluorosurfactant is selected from at least one member of the group consisting of:

-f- CF2CF24- CH2CH2θ - CH2CH20- - H

f- CF2CF24- CH2CH2θ - CH2CH2θ - H

"f CF2CF2-j- CH2CH2θ4- CH2CH20-4- H

wherein x < y < z and x, y, and z are between 0 and 25 and wherein the distribution of the perfluoroethylene units in the perfluorinated portion of the three surfactants is different.

12. The image-recording element of claim 1 wherein said fluorosurfactant comprises polymeric fluorosurfactants.

13. The image-recording element of claim 1 wherein said fluorosurfactant comprises an oligomeric acrylamide of the general formula I:

wherein
x is 2 to 8;
y is 2 to 6;
z is 5 to 60;



Ri is H or d-C3 alkyl;
R2 and R3 can be any of the following combinations:
R2 and R3 each independently represent an unsubstituted or
substituted alkyl or aryl group,
R2 is H and R3 is an isopropyl group, or
R2 and R , together with the adjacent N atom, form a heterocyclic ring.

14. The image-recording element of claim 13 wherein
x is 3 or 4;
y is 2 or 3;
z is 5 to 15;
X is S;


R2 and R3 can be any of the following combinations:
R2 and R3 each independently represent a methyl or ethyl group, or

R2 is H and R3 is an isopropyl group.

15. The image-recording element of claim 13 wherein
x is 3 or 4;
y is 2;
z is 5 to 10;
X is S;
Ri is H; and
R2 and R3 are methyl groups.

16. The image-recording element of claim 1 wherein said fluorosurfactant comprises an ethylene oxide oligomer of general formula II:

F— (- CF2CF2 A (- CH2 A- S—


wherein
x is 2 to 8;
y is 1 to 6;
z is 4 to 30;
n is 0 or 1 ;
Ri is H, a methyl or an ethyl group.

17. The image-recording element of claim 16 wherein
x is 3 or 4;
y is 2 or 3;
z is 10 to 18;
n is 1 ; and
Ri is a methyl group.

18. The image-recording element of claim 16 wherein
x is 3 or 4;
y is 2;
z is 12 to 16;
n is i; and
Ri is a methyl group.

19. The image-recording element of claim 1 wherein said fluorosurfactant comprises an oligomeric acrylamide of general formula III:


wherein
x is 2 to 8;
y is 2 to 6;
z is 5 to 60;
Ri is H or Cι-C3 alkyl; and
R and R3 can be any of the following combinations:
R2 and R3 each independently represent an unsubstituted or
substituted alkyl or aryl group,
R is H and R3 is an isopropyl group, or
R2 and R , together with the adjacent N atom, form a heterocyclic ring.

20. The image-recording element of claim 19 wherein
x is 3 or 4;
y is 2 or 3;

z is 16 to 50;
Ri is H or methyl; and
R2 and R3 can be either of the following combinations:
R2 and R3 each independently represent a methyl or ethyl group, or R2 is H and R3 is an isopropyl group.

21. The image-recording element of claim 19 wherein
x is 3;
y is 2;
z is 25;
Ri is H; and
R2 and R represent a methyl group.

22. The image-recording element of claim 1 wherein said fluorosurfactant comprises between 0.05% and 3% of said image-receiving layer by weight.

23. The image-recording element of claim 1 wherein said image-receiving layer further comprises a latex polymer having a glass transition temperature of less than 30° C.

24. The image-recording element of claim 23 wherein said latex polymer is present in an amount of between 4% and 15% by weight of said image-receiving layer.

25. The image-recording element of claim 1 wherein said image-receiving layer further comprises a hardener.

26. The image-recording element of claim 1 wherein said image-receiving layer comprises borax; boric acid or its salts; 1 ,4-dioxane-2,3-diol; glyoxal; or bis(vinylsulfonyl)methane as a hardener.

27. The image-recording element of claim 1 wherein said support is nonporous and said image-receiving layer has a total coverage 35 and 65 g/m .

28. The image-recording element of claim 1 wherein said support is porous and said image-receiving layer has a total coverage of between 4 and 30 g/m2.

29. The image-recording element of claim 1 wherein said support is porous and said image-receiving layer has a total coverage of between 6 and 20 g/m2.

30. The image-recording element of claim 1 wherein an ink-absorbing layer is present between said support and said image-receiving layer.

31. The image-recording element of claim 30 wherein said ink-absorbing layer is porous, and said image-receiving layer has a total coverage of between 4 and 30 g/m .

32. The image-recording element of claim 30 wherein said ink-absorbing layer is porous, and said image-receiving layer has a total coverage of between 6 and 20 g/m .

33. The image-recording element of claim 1 wherein the surface pH of said image-receiving layer moistened with water is between 8 and 10.

34. The image-recording element of claim 1 wherein said image-recording element comprises an inkjet image-recording element.