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US 8,770,734 B2Granted
Water-based ink for ink-jet recording, ink cartridge, ink-jet recording method, method for preventing corrosion of metal member, method for producing water-based ink for ink-jet recording, and ink-jet recording apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorJunichiro Sugimoto
Life of this patent
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Abstract
There is provided a water-based ink for ink-jet recording including: a self-dispersible carbon black modified by carboxylic acid group; water; and a water-soluble organic solvent, wherein oxalate ion is contained in the water-based ink in a amount of not more than 45 ppm by weight.
Claims18
A water-based ink for inkjet recording comprising:
- a refined self-dispersible carbon black modified by carboxylic acid group, wherein the refining is effective to provide an oxalate ion concentration in the water-based ink of not more than 45 ppm by weight;
- water;
- and
- a water-soluble organic solvent.
1 more element
A method for preventing corrosion of a metal member, of an ink jet recording apparatus, which contacts with a water-based ink for ink-jet recording, the method comprising:
- providing a refined carboxylic acid group-modified self-dispersible carbon black dispersion, wherein the refining is effective to provide an oxalate ion concentration in the water-based ink of not more than 45 ppm by weight;
- and
- preparing the water-based ink containing a self-dispersible carbon black modified by carboxylic acid group, water, and a water-soluble organic solvent;
- and
- bringing the water-based ink into contact with the metal member.
2 more elements
A method for producing a water-based ink for inkjet recording, the method comprising:
- providing a refined carboxylic acid group-modified self-dispersible carbon black dispersion, wherein the refining is effective to provide an oxalate ion concentration in the water-based ink of not more than 45 ppm by weight;
- providing water and a water-soluble organic solvent, and
- mixing the refined carboxylic acid group-modified self-dispersible carbon black dispersion, water, and the water-soluble organic solvent.
Dependencies are inferred from the claim text.