Ink jet recording element
View Patent ↗An ink jet recording element including a support having thereon an image-receiving layer, the ink jet recording element containing a metal hydroxide salt, (M 2+ )(OH) a (A p − ) b .xH 2 O; wherein: M 2+ is at least one metal ion having a 2+ oxidation state; A is an organic or inorganic anion; p is 1 or 2; and x is equal to or greater than 0; and a and b comprise rational numbers as follows: 0<a<2 and 0<b<2 so that the charge of M 2+ is balanced.
1. An unimaged ink jet recording element for use in inkjet printing an image comprising a support having thereon a porous image-receiving layer for receiving the image comprising a polymeric binder, said porous image-receiving layer containing a metal hydroxide salt coated in particulate form,
(M 2+ )(OH) a (A p − ) b .xH 2 O;
wherein:
M 2+ is at least one metal ion having a 2+ oxidation state, wherein M is zinc or tin;
A is an organic anion or else an inorganic anion other than hydroxy;
p is 1 or 2; and
x is equal to or greater than 0; and
a and b comprise rational numbers as follows: 0<a<2 and 0<b<2 so that the charge of M 2+ is balanced wherein said metal hydroxide salt is in particulate form.
2. The recording element of claim 1 wherein said metal hydroxide salts is a zinc hydroxy double salt.
3. The recording element of claim 1 wherein A p− is an organic anion R—COO − , R—O − , R—SO 3 − , R—OSO 3 − or R—O—PO 3 − where R is an alkyl or aryl group.
4. The recording element of claim 1 wherein A p− is an inorganic anion I − , Cl − , Br − , F − , ClO 4 − , NO 3 − , CO 3 2− or SO 4 2− .
5. The recording element of claim 1 wherein said metal hydroxide salt is prepared from an aqueous dispersion having a pH between about 3 and 10.
6. The recording element of claim 1 wherein M is Zn.
7. The recording element of claim 6 wherein A p− is Cl, NO 3 , acetate, propionate or an organosulfonate.
8. The recording element of claim 7 wherein a is between and including 1.4 and 1.6, and b is between and including 0.4 and 0.6.
9. The recording element of claim 1 wherein the particle size of said metal hydroxide salt is less than about 5 μm.
10. The recording element of claim 1 wherein the particle size of said metal hydroxide salt is less than about 1 μm.
11. The recording element of claim 1 wherein said support is opaque.
12. The recording element of claim 1 wherein said support is transparent.
13. The recording element of claim 1 which also includes a base layer located between said image-receiving layer and said support.
14. The recording element of claim 1 wherein said image-receiving layer contains a polymeric binder.
15. An unimaged ink jet recording element for use in inkjet printing an image comprising a support having thereon a porous image-receiving layer for receiving the image comprising a polymeric binder, said porous image-receiving layer containing a metal hydroxide salt coated in particulate form,
(M 2+ )(OH) a (A p − ) b .xH 2 O;
wherein:
M 2+ is at least one metal ion having a 2+ oxidation state, wherein M is zinc;
A is an organic anion or else or an inorganic anion other than hydroxy;
p is 1 or 2; and
x is equal to or greater than 0; and
a and b comprise rational numbers as follows: 0<a<2 and 0<b<2 so that the charge of M 2+ is balanced wherein said metal hydroxide salt is in particulate form.
16. The recording element of claim 15 wherein a is greater than 0.5 and b is less than 1.5.
17. The recording element of claim 15 wherein the porous image-receiving layer is a product of coating the metal hydroxide salt as a colloidal dispersion of solid particulates.