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 hydrophilic polymer and a poly(vinylbenzyl quatermary ammonium salt) of the formula: ##STR4## 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, the ink receiving layer comprising from about 3 to about 15 parts by weight of the hpydrophilic polymer per part by weight of the poly(vinylbenzyl quaternary ammonium salt).
- 2. A method according to claim 1 wherein R.sup.7 is an alkyl group containing at least 11 carbon atoms, and R.sup.8 and R.sup.9 are each a methyl group.
- 3. A method according to claim 2 wherein each of R.sup.1, R.sup.2 and R.sup.3 is a methyl group, each of R.sup.4, R.sup.5 and R.sup.6 is an ethyl group, R.sup.7 is a dodecyl group, and R.sup.8 and R.sup.9 are each a methyl group.
- 4. A method according to claim 1 wherein the molar proportions a, b and c are in the ratios 5-10:5-10:1.
- 5. A method according to claim 1 wherein the hydrophilic polymer is poly(vinyl alcohol).
- 6. A method according to claim 5 wherein the ink-receiving layer comprises from about 5 to about 8 parts by weight of the poly(vinyl alcohol) per part by weight of the poly(vinylbenzyl quaternary ammonium salt).
- 7. A method according to claim 5 wherein the poly(vinyl alcohol) comprises a non-derivatized poly(vinyl alcohol) and a derivatized poly(vinyl alcohol), in which at least some of the hydroxyl groups present in underivatized poly(vinylalcohol) 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 from about 2:1 to about 1:2.
- 8. A method according to claim 7 wherein the derivatized poly(vinyl alcohol) is an acetoacetylated poly(vinyl alcohol).
- 9. A method according to claim 5 wherein the poly(vinyl alcohol) is cross-linked.
- 10. A method according to claim 9 wherein the derivatized poly(vinyl alcohol) has been cross-linked with an aldehyde cross-linking agent.
- 11. A method according to claim 1 wherein the ink-receiving layer further comprises poly(vinylpyrrolidone).
- 12. A method according to claim 1 wherein the ink-receiving layer further comprises a poly(alkyl acrylate) or a poly(alkyl methacrylate).
- 13. A method according to claim 1 wherein the ink-receiving layer further comprises a surfactant.
- 14. A method according to claim 13 wherein the surfactant is a linear alkoxylated fatty alcohol surfactant.
- 15. 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 50 to about 80 p arts by weight of poly(vinyl alcohol);
- from about 5 to about 15 parts by weight of a poly(vinylbezyl quaternary ammonium salt) of the formula: ##STR5## 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, R8 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 unts;
- 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
- the ink receiving layer comprising from about 3 to about 15 parts by weight of the poly(vinylalcohol) per part by weight of the poly(vinylbenzyl quaternary ammonium salt).
Parent Case Info
This application is a division of Application Ser. No. 08/780,475 filed Jan. 7, 1997 (now U.S. Pat. No. 6,010,790).
Attention is directed to our copending application Ser. No. 08/779,802, filed Jan. 7, 1997, now U.S. Pat. No. 5,856,023, entitled "Ink Jet Recording Sheet", assigned to the same assignee as the present application. This application describes and claims an ink jet recording sheet and method using a sheet having an ink receiving layer comprising a mixture of a non-derivatized poly(vinyl alcohol) and a derivatized poly(vinyl alcohol).
US Referenced Citations (27)
Foreign Referenced Citations (1)
Number |
Date |
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57-182445 |
Nov 1982 |
JPX |
Divisions (1)
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Number |
Date |
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780475 |
Jan 1997 |
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