Claims
- 1. A method of ink jet printing which comprises applying to an ink jet recording sheet a plurality of ink droplets generated from an ink jet printer, wherein the ink jet recording sheet comprises a support carrying an ink-receiving layer, this ink-receiving layer comprising a non-derivatized poly(vinyl alcohol) and a derivatized poly(vinyl alcohol), in which at least some of the hydroxyl groups present are replaced by ether or ester groupings, the weight ratio of the non-derivatized poly(vinyl alcohol) to the derivatized poly(vinyl alcohol) being in the range of about 2:1 to about 1:2, the ink droplets being applied to the ink-receiving layer.
- 2. A method according to claim 1 wherein, in the ink-receiving layer, the derivatized poly(vinyl alcohol) is an acetoacetylated poly(vinyl alcohol).
- 3. A method according to claim 1 wherein, in the ink-receiving layer, the poly(vinyl alcohol) is cross-linked.
- 4. A method according to claim 3 wherein, in the ink-receiving layer, the derivatized poly(vinyl alcohol) has been cross-linked with an aldehyde cross-linking agent.
- 5. A method according to claim 1 wherein the ink-receiving layer further comprises a poly(vinylbenzyl quaternary ammonium salt).
- 6. A method according to claim 5 wherein the poly(vinylbenzyl quaternary ammonium salt) is of the formula: ##STR2## wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 is independently alkyl of from 1 to 4 carbon atoms; each of R.sup.7, R.sup.8 and R.sup.9 is independently alkyl of from 1 to 18 carbon atoms and the total number of carbon atoms in R.sup.7, R.sup.8 and R.sup.9 is from 13 to 20; each M.sup.- is an anion; and each of a, b and c is the molar proportion of the respective repeating units.
- 7. A method according to claim 6 wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.7 and R.sup.8 is a methyl group; each of R.sup.4, R.sup.5 and R.sup.6 is an ethyl group; and R.sup.9 is an n-C.sub.12 H.sub.25 group.
- 8. A method according to claim 1 wherein the ink-receiving layer further comprises poly(vinylpyrrolidone).
- 9. A method according to claim 1 wherein the ink-receiving layer further comprises a poly(alkyl acrylate) or a poly(alkyl methacrylate).
- 10. A method according to claim 1 wherein the ink-receiving layer further comprises a surfactant.
- 11. A method according to claim 10 wherein the surfactant is a linear alkoxylated fatty alcohol surfactant.
- 12. A method according to claim 1 wherein the ink is an aqueous or alcohol based ink.
- 13. A method according to claim 1 wherein the ink-receiving layer comprises substantially equal weights of the non-derivatized and derivatized poly(vinyl alcohol)s.
- 14. A method of ink jet printing which comprises applying to an ink jet recording sheet a plurality of ink droplets generated from an ink jet printer, wherein the ink jet recording sheet comprises a support carrying an ink-receiving layer, this ink-receiving layer comprising:
- from about 20 to about 40 parts by weight of a non-derivatized poly(vinyl alcohol);
- from about 20 to about 40 parts by weight of an acetoacetylated poly(vinyl alcohol);
- the weight ratio of the non-derivatized poly(vinyl alcohol) to the acetoacetylated poly(vinyl alcohol) being in the range of about 2:1 to about 1:2,
- from about 5 to about 15 parts by weight of an a poly(vinylbenzyl quaternary ammonium salt);
- from about 15 to about 30 parts by weight of poly(vinylpyrrolidone);
- from 0 to about 5 parts by weight of a poly(alkyl acrylate) or poly(alkyl methacrylate); and
- from 0 to about 1 part by weight of a surfactant.
REFERENCE TO RELATED APPLICATION
This is a divisional of application Ser. No. 08/779,802, filed Jan. 7, 1997 now U.S. Pat. No. 5,856,023.
US Referenced Citations (26)
Foreign Referenced Citations (1)
Number |
Date |
Country |
57-182445 |
Nov 1982 |
JPX |
Divisions (1)
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Number |
Date |
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Parent |
779802 |
Jan 1997 |
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