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INK-JET INK, METHOD FOR ALLEVIATING KOGATION ON SURFACE OF HEATER OF INK-JET RECORDING HEAD, METHOD FOR INK-JET RECORDING, INK-JET RECORDING APPARATUS, RECORDING UNIT AND METHOD FOR PROLONGING INK-JET RECORDING HEAD LIFE

  • US 6,682,588 B2
  • Filed: 02/15/2001
  • Issued: 01/27/2004
  • Est. Priority Date: 02/17/2000
  • Status: Expired due to Fees
First Claim
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1. An aqueous ink for ink-jet recording comprising:

  • (a) a pigment as a coloring material;

    (b) an aqueous liquid medium; and

    (c) an ammonium salt of an acid having a methyl or methylene group and a carboxylic group.

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