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US 8,944,581 B2Granted
Water-based ink for ink-jet recording, ink cartridge, ink-jet recording apparatus, and ink-jet recording method
AssigneeBrother Kogyo Kabushiki Kaisha
InventorChisato Hayashi
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Abstract
There is provided a water-based ink for ink-jet recording, including: a self-dispersible pigment modified by sulfonic acid group; glycerol; diethylene glycol; a penetrant; and water, wherein the glycerol and the diethylene glycol satisfy the following condition (i): 0.01≦DEG/(Gly+DEG)≦0.11 (i) in the condition (i), Gly represents an amount of the glycerol in the water-based ink (% by weight); and DEG represents an amount of the diethylene glycol in the water-based ink (% by weight).
Claims16
A water-based ink for ink-jet recording, comprising:
- a self-dispersible pigment modified by sulfonic acid group;
- glycerol;
- diethylene glycol;
- a penetrant;
- and
- water,
- wherein the glycerol and the diethylene glycol satisfy the following condition (i):
- 0.01≦DEG/(Gly+DEG)≦0.08 (i)
- in the condition (i), Gly represents an amount of the glycerol in the water-based ink (% by weight);
- and DEG represents an amount of the diethylene glycol in the water-based ink (% by weight).
7 more elements
Dependencies are inferred from the claim text.