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US 8,801,166 B2Granted
Water-based ink for ink-jet recording, ink cartridge, and ink-jet recording apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsHideji Fukaya, Taro Nagano
Life of this patent
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Abstract
A water-based ink for ink-jet recording includes a self-dispersible pigment modified by phosphate group; water; a water-soluble organic solvent; a N-hydroxy cyclic imide compound; and at least one selected from the group consisting of boric acids, a chelate agent, a reducing sugar and a sugar alcohol.
Claims19
A water-based ink for ink-jet recording comprising:
- a self-dispersible pigment modified by phosphate group;
- water;
- a water-soluble organic solvent;
- a N-hydroxy cyclic imide compound;
- at least one selected from the group consisting of boric acids or salt thereof, a chelate agent, a reducing sugar and a sugar alcohol;
- and
- wherein the N-hydroxy cyclic imide compound is contained in an amount ranging from 0.001% by weight to 0.05% by weight of the ink.
4 more elements
Dependencies are inferred from the claim text.