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Inkjet printing media

  • US 6,340,725 B1
  • Filed: 10/11/1999
  • Issued: 01/22/2002
  • Est. Priority Date: 06/13/1997
  • Status: Expired due to Fees
First Claim
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1. A coating composition comprising:

  • (a) a volatile aqueous liquid medium; and

    (b) binder dissolved or dispersed in the volatile aqueous liquid medium, the binder comprising;

    (1) water-soluble film-forming organic polymer which is substantially free of ammonium groups, (2) water-soluble first cationic addition polymer consisting essentially of quaternary ammonium-containing mer units and ammonium-free mer units, and (3) water-soluble second cationic addition polymer consisting essentially of secondary, tertiary, or both secondary and tertiary ammonium-containing mer units and ammonium-free mer units, wherein the binder constitutes from 20 to 90 percent by weight of the solids of the coating composition; and

    (c) finely divided substantially water-insoluble filler particles which have a maximum dimension of less than 500 nanometers and constitute from 10 to 80 percent by weight of the solids of the coating composition.

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