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Ink composition

  • US 10,400,123 B2
  • Filed: 06/06/2014
  • Issued: 09/03/2019
  • Est. Priority Date: 06/06/2014
  • Status: Active Grant
First Claim
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1. An ink composition, comprising:

  • a colorant;

    a co-solvent;

    a surfactant system, consisting of;

    an acid selected from the group consisting of undecanoic acid, dodecanoic acid, tridecanoic acid, and combinations thereof;

    lithium; and

    a non-ionic surfactant including a hydrophilic head group to interact with the lithium and a hydrophobic tail to not sterically hinder formation of an anti-evaporative layer to be formed by the surfactant system, the non-ionic surfactant excluding any ethyleneoxy groups; and

    water;

    wherein the ink composition excludes stearic acid, linolenic acid, linear saturated fatty acids having a carbon chain of fewer than 11 carbons, and linear saturated fatty acids having a carbon chain of more than 13 carbons.

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