IP Library Granted Patent US 8,932,392
Granted Patent B2
US 8,932,392 · App. 13/974,590 · Granted Jan 13, 2015

Water-based ink for ink-jet recording, ink cartridge, ink-jet recording apparatus and ink-jet recording method

Inventor: Chisato Hayashi (Marukame, JP)
Assignee: Brother Kogyo Kabushiki Kaisha
C09D11/38B41J2/17503
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Quick Facts
Patent No.
US 8,932,392
App. No.
13/974,590
Granted
Jan 13, 2015
Kind
B2
Abstract

There is provided a water-based ink for ink-jet recording including: a colorant; water; glycerol; and at least one of raffinose and a derivative thereof in an amount ranging from more than 0% by weight to not more than 2% by weight with respect to an entire amount of the water-based ink. There is also provided a water-based ink for ink-jet recording including: a colorant; water; glycerol; diethylene glycol; and at least one of raffinose and a derivative thereof.

Claims (36)

1. A water-based ink for inkjet recording, comprising:

a colorant;

water;

glycerol; and

raffinose, a derivative thereof, or both in an amount ranging from 0.05% by weight to 1% by weight with respect to an entire amount of the water-based ink.

2. The water-based ink for ink-jet recording according to claim 1 , wherein the colorant is a self-dispersible pigment modified by an anionic group.

3. The water-based ink for ink-jet recording according to claim 1 , wherein the water-based ink does not contain a saccharide different from the raffinose and the derivative thereof.

4. The water-based ink for ink-jet recording according to claim 1 , wherein raffinose, the derivative thereof, or both is contained in an amount ranging from more than 0% by weight to not more than 8% by weight with respect to a blending amount of the glycerol.

5. The water-based ink for ink-jet recording according to claim 4 , wherein raffinose, the derivative thereof, or both is contained in an amount of 0.2% by weight to 4% by weight with respect to the blending amount of the glycerol.

6. The water-based ink for ink-jet recording according to claim 5 , wherein raffinose, the derivative thereof, or both is contained in an amount of 0.4% by weight to 4% by weight with respect to the blending amount of the glycerol.

7. An ink cartridge comprising the water-based ink for ink-jet recording as defined in claim 1 .

8. An ink-jet recording method comprising:

preparing a recording medium; and

discharging, to the recording medium, the water-based ink for ink-jet recording as defined in claim 1 .

9. A water-based ink for ink-jet recording, comprising:

a colorant;

water;

glycerol;

diethylene glycol; and

raffinose, a derivative thereof, or both in an amount of 0.05% by weight to 1% by weight with respect to the entire amount of the water-based ink.

10. The water-based ink for ink-jet recording according to claim 9 , wherein raffinose, the derivative thereof, or both is contained in an amount of 0.4% by weight to 1% by weight with respect to the entire amount of the water-based ink.

11. The water-based ink for ink-jet recording according to claim 10 , wherein raffinose, the derivative thereof, or both is contained in an amount of 0.5% by weight to 1% by weight with respect to the entire amount of the water-based ink.

12. The water-based ink for ink-jet recording according to claim 9 , wherein the colorant is a self-dispersible pigment modified by an anionic group.

13. The water-based ink for ink-jet recording according to claim 9 , wherein the water-based ink does not contain a saccharide different from the raffinose and the derivative thereof.

14. The water-based ink for ink-jet recording according to claim 9 , at least one of the raffinose and the derivative thereof is contained in an amount of 1.6% by weight to 12% by weight with respect to a total blending amount of the glycerol and the diethylene glycol.

15. The water-based ink for ink-jet recording according to claim 14 , wherein at least one of the raffinose and the derivative thereof is contained in an amount of 1.6% by weight to 4% by weight with respect to the total blending amount of the glycerol and the diethylene glycol.

16. The water-based ink for ink-jet recording according to claim 15 , wherein at least one of the raffinose and the derivative thereof is contained in an amount of 2% by weight to 4% by weight with respect to the total blending amount of the glycerol and the diethylene glycol.

17. The water-based ink for ink-jet recording according to claim 9 , wherein the diethylene glycol is contained in an amount of 20% by weight to 60% by weight with respect to a total blending amount of the glycerol and the diethylene glycol.

18. An ink cartridge comprising the water-based ink for ink-jet recording as defined in claim 9 .

19. An ink-jet recording method comprising:

preparing a recording medium; and

discharging, to the recording medium, the water-based ink for ink-jet recording as defined in claim 9 .

20. The water-based ink for ink-jet recording to claim 9 , wherein diethylene glycol is contained in an amount of 15% by weight to 35% by weight with respect to the entire amount of the water-based ink.

21. The water-based ink for ink-jet recording according to claim 1 , wherein glycerol is contained in an amount of 10% by weight to 50% by weight with respect to the entire amount of the water-based ink.

22. The water-based ink for ink-jet recording according to claim 9 , wherein glycerol is contained in an amount of 10% by weight to 50% by weight with respect to the entire amount of the water-based ink.

23. The water-based ink for ink-jet recording according to claim 1 , wherein after-evaporation viscosity of the water-based ink is from 309 mPa·s to 339 mPa·s.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 23, 2013
From: HAYASHI, CHISATO
To: BROTHER KOGYO KABUSHIKI KAISHA
Reel/Frame 031071/0904 →
Priority Claims (2)
JP 2012-184878 · Aug 24, 2012 · national
JP 2012-184881 · Aug 24, 2012 · national
Continuity (1)
Related Publication 20140055534A1 · Feb 27, 2014