Claims
- 1. A recording liquid which comprises carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, wherein the amount of the dissolved water-soluble resin which is in a liquid medium without being adsorbed on a pigment in said recording liquid is not more than 2% by weight and the recording liquid further contains at least one of the dyes represented by the following general formulae (A) to (C): ##STR23## wherein R is --H, --COCH.sub.3, ##STR24## and M is Na, Li, K or ammonium; ##STR25## wherein R.sub.1 and R.sub.2 are independently selected from --OCH.sub.3, --CH.sub.3, --NH.sub.2 and --NHCOCH.sub.3, n is 0 or 1 and M is Na, Li, K, or ammonium; and ##STR26## wherein M is Na, K, Li or ammonium.
- 2. A recording liquid according to claim 1, wherein the content of the carbon black is in the range of 3 to 20% by weight on the basis of the total weight of the recording liquid.
- 3. A recording liquid according to claim 1, wherein the content of the dye is in the range of 0.5 to 2.0% by weight on the basis of the total weight of the recording liquid.
- 4. A recording liquid according to claim 1, wherein the content of the aliphatic monohydric alcohol is in the range of 3 to 15% by weight on the basis of the total weight of the recording liquid.
- 5. A recording liquid according to claim 1, wherein the content of the polyhydric alcohol and/or its alkyl ether is in the range of 10 to 15% by weight on the basis of the total weight of the recording liquid.
- 6. A recording liquid according to claim 1, wherein the aliphatic monohydric alcohol is ethyl alcohol.
- 7. A method for ink jet recording, which comprises ejecting a recording liquid as liquid droplets from fine orifices by endowing the recording liquid with heat energy, the recording liquid comprising carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, the amount of the dissolved water-soluble resin which is in a liquid medium without being adsorbed on a pigment in said recording liquid being not more than 2% by weight and the recording liquid further containing at least one of the dyes represented by the following general formulae (A) to (C): ##STR27## wherein R is --H, --COCH.sub.3, ##STR28## and M is Na, Li, K or ammonium; ##STR29## wherein R.sub.1 and R.sub.2 are independently selected from --OCH.sub.3, --CH.sub.3, --NH.sub.2 and --NHCOCH.sub.3, n is 0 or 1 and M is Na, Li, K, or ammonium; and ##STR30## wherein M is Na, K, Li or ammonium.
- 8. A method according to claim 7, wherein the content of the carbon black is in the range of 3 to 20% by weight on the basis of the total weight of the recording liquid.
- 9. A method according to claim 7, wherein the content of the dye is in the range of 0.5 to 2.0% by weight on the basis of the total weight of the recording liquid.
- 10. A method according to claim 7, wherein the content of the aliphatic monohydric alcohol is in the range of 3 to 15% by weight on the basis of the total weight of the recording liquid.
- 11. A method according to claim 7, wherein the content of the polyhydric alcohol and/or its alkyl ether is in the range of 10 to 50% by weight on the basis of the total weight of the recording liquid.
- 12. A method according to claim 7, wherein the aliphatic monohydric alcohol is ethyl alcohol.
- 13. A method according to claim 7, wherein the water-soluble resin has an acid value of 50 to 300.
- 14. A method according to claim 7, wherein the water-soluble resin has an acid value of 70 to 250.
- 15. A recording liquid which comprises carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, wherein the water-soluble resin has an acid value of 50 to 300, the amount of the dissolved water-soluble resin which is in a liquid medium without being adsorbed on a pigment in said recording liquid is not more than 2% by weight and the recording liquid further contains at least one of the dyes represented by the following general formulae (A) to (C): ##STR31## wherein R is --H, --COCH.sub.3, ##STR32## and M is Na, Li, K or ammonium; ##STR33## wherein R.sub.1 and R.sub.2 are independently selected from --OCH.sub.3, --CH.sub.3, --NH.sub.2 and --NHCOCH.sub.3, n is 0 or 1 and M is Na, Li, K, or ammonium; and ##STR34## wherein M is Na, K, Li or ammonium.
- 16. A recording liquid according to claim 15, wherein the content of the carbon black is in the range of 3 to 20% by weight on the basis of the total weight of the recording liquid.
- 17. A recording liquid according to claim 15, wherein the content of the dye is in the range of 0.5 to 2.0% by weight on the basis of the total weight of the recording liquid.
- 18. A recording liquid according to claim 15, wherein the content of the aliphatic monohydric alcohol is in the range of 3 to 15% by weight on the basis of the total weight of the recording liquid.
- 19. A recording liquid according to claim 15, wherein the content of the polyhydric alcohol and/or its alkyl ether is in the range of 10 to 15% by weight on the basis of the total weight of the recording liquid.
- 20. A recording unit having an ink container for holding a recording liquid and a head portion for ejecting the recording liquid as liquid droplets, said recording liquid comprising carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, wherein the amount of the dissolved water-soluble resin which is in a liquid medium without being adsorbed on a pigment in said recording liquid is not more than 2% by weight and the recording liquid further containing at least one of the dyes represented by the following general formulae (A) to (C): ##STR35## wherein R is --H, --COCH.sub.3, ##STR36## and M is Na, Li, K or ammonium; ##STR37## wherein R.sub.1 and R.sub.2 are independently selected from --OCH.sub.3, --CH.sub.3, --NH.sub.2 and --NHCOCH.sub.3, n is 0 or 1 and M is Na, Li, K, or ammonium; and ##STR38## wherein M is Na, K, Li or ammonium.
- 21. A recording unit of claim 20, wherein the head portion ejects liquid droplets by the action of thermal energy on the recording liquid.
- 22. A recording unit of claim 20, wherein the ink container comprises an ink absorption member.
- 23. A recording unit of claim 20, wherein the ink absorption member is formed from polyurethane.
- 24. An ink cartridge having an ink container for holding a recording liquid, said recording liquid comprising carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, wherein the amount of the dissolved water-soluble resin which is in a liquid medium without being adsorbed on a pigment in said recording liquid is not more than 2% by weight and the recording liquid further containing at least one of the dyes represented by the following general formulae (A) to (C): ##STR39## wherein R is --H, --COCH.sub.3, ##STR40## and M is Na, Li, K or ammonium; ##STR41## wherein R.sub.1 and R.sub.2 are independently selected from --OCH.sub.3, --CH.sub.3, --NH.sub.2 and --NHCOCH.sub.3, n is 0 or 1 and M is Na, Li, K, or ammonium; and ##STR42## wherein M is Na, K, Li or ammonium.
- 25. An ink cartridge of claim 24, wherein the ink container is a bag structure.
- 26. An ink cartridge of claim 24, wherein the ink container has a liquid-contact face formed of polyolefin.
- 27. An ink-jet recording apparatus comprising a recording unit having an ink container for holding a recording liquid and a head portion for ejecting the recording liquid as liquid droplets, said recording liquid comprising carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, wherein the amount of the dissolved water-soluble resin which is in a liquid medium without being adsorbed on a pigment in said recording liquid is not more than 2% by weight and said recording liquid further containing at least one of the dyes represented by the following general formulae (A) to (C): ##STR43## wherein R is --H, --COCH.sub.3, ##STR44## and M is Na, Li, K or ammonium; ##STR45## wherein R.sub.1 and R.sub.2 are independently selected from --OCH.sub.3, --CH.sub.3, --NH.sub.2 and --NHCOCH.sub.3, n is 0 or 1 and M is Na, Li, K, or ammonium; and ##STR46## wherein M is Na, K, Li or ammonium.
- 28. An ink-jet recording apparatus of claim 27, wherein the head portion ejects liquid droplets by the action of thermal energy on the recording liquid.
- 29. An ink-jet recording apparatus of claim 27, wherein the ink container comprises an ink absorption member.
- 30. An ink-jet recording apparatus of claim 29, wherein the ink absorption member is formed from polyurethane.
- 31. An ink-jet recording apparatus comprising a recording head for ejecting the recording liquid as liquid droplets, an ink cartridge having an ink container for holding a recording liquid and an ink supplying portion for supplying the recording liquid to the recording head from the ink cartridge, said recording liquid comprising carbon black, a water-soluble resin, a water-soluble organic solvent including polyhydric alcohol and/or its alkyl ether and an aliphatic monohydric alcohol, and water, wherein the amount of the dissolved water-soluble resin which is in a liquid medium without being adsorbed on a pigment in said recording liquid is not more than 2% by weight and the recording liquid further containing at least one of the dyes represented by the following general formulae (A) to (C): ##STR47## wherein R is --H, --COCH.sub.3, ##STR48## and M is Na, Li, K or ammonium; ##STR49## wherein R.sub.1 and R.sub.2 are independently selected from --OCH.sub.3, --CH.sub.3, --NH.sub.2 and --NHCOCH.sub.3, n is 0 or 1 and M is Na, Li, K, or ammonium; and ##STR50## wherein M is Na, K, Li or ammonium.
- 32. An ink-jet recording apparatus of claim 31, wherein the recording head ejects liquid droplets by the action of thermal energy on the recording liquid.
- 33. An ink-jet recording apparatus of claim 31, wherein the ink container is a bag structure.
- 34. An ink-jet recording apparatus of claim 31, wherein the ink container has a liquid-contact face formed of polyolefin.
- 35. A recording liquid which comprises
- (1) carbon black,
- (2) a water-soluble dye,
- (3) a water-soluble resin,
- (4) a water-soluble organic solvent including a polyhydric alcohol and/or an alkyl ether thereof and an aliphatic monohydric alcohol, and
- (5) water,
- wherein the amount of the dissolved water-soluble resin which is in a liquid medium without being adsorbed on a pigment in said recording liquid is not more than 2% by weight.
Priority Claims (6)
Number |
Date |
Country |
Kind |
1-001532 |
Jan 1989 |
JPX |
|
1-001533 |
Jan 1989 |
JPX |
|
1-001534 |
Jan 1989 |
JPX |
|
1-308329 |
Nov 1989 |
JPX |
|
1-308330 |
Nov 1989 |
JPX |
|
1-308331 |
Nov 1989 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 08/040,584 filed Mar. 31, 1993, now abandoned, which is a continuation of application Ser. No. 07/652,216 filed Feb. 5, 1991, now abandoned, which in turn is a continuation-in-part of application Ser. No. 07/459,267, filed Dec. 29, 1989, now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (5)
Number |
Date |
Country |
0267677 |
May 1988 |
EPX |
2100449 |
Mar 1972 |
FRX |
2537150 |
Jun 1984 |
FRX |
1053373 |
Mar 1986 |
JPX |
1053372 |
Mar 1986 |
JPX |
Continuations (2)
|
Number |
Date |
Country |
Parent |
40584 |
Mar 1993 |
|
Parent |
652216 |
Feb 1991 |
|
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
459267 |
Dec 1989 |
|