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SYSTEM AND METHOD FOR SECURE DOCUMENT PRINTING AND DETECTION

  • US 20090042191A1
  • Filed: 12/11/2007
  • Published: 02/12/2009
  • Est. Priority Date: 04/16/2003
  • Status: Active Grant
First Claim
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1. An authentication method for authenticating an ink within an ink cartridge, said method comprising the steps of:

  • applying a particular nucleic acid material associated with a particular sequence of nucleic acid bases to the ink;

    collecting a sample of the ink having the nucleic acid; and

    verifying whether the ink is genuine by detecting said particular nucleic acid material.

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