Inkjet ink set

  • US 9,873,812 B2
  • Filed: 09/23/2013
  • Issued: 01/23/2018
  • Est. Priority Date: 09/23/2013
  • Status: Active Grant
First Claim
Patent Images

1. An ink set, comprising:

  • a first inkjet ink cartridge containing a pre-treatment fixing fluid including a metal salt;

    at least one second inkjet ink cartridge containing an ink including an ink colorant and an ink vehicle; and

    a third inkjet ink cartridge containing a post-treatment fluid including a binder and a surfactant having a hydrophilic-lipophilic balance (HLB) value of greater than about 12, wherein the binder is selected from the group consisting of acrylic polymers or copolymers, vinyl acetate polymers or copolymers, polyester polymers or copolymers, vinylidene chloride polymers or copolymers, butadiene polymers or copolymers, styrene-butadiene copolymers, acrylonitrile-butadiene copolymers, and mixtures thereof and present in the post-treatment fluid in a range of about 6 weight percent to about 30 weight percent, and wherein the post-treatment fluid is devoid of any metal salt;

    wherein the ink set is adapted for separate inkjetting of the pre-treatment fixing fluid, the ink, and the post-treatment fluid onto a medium.

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