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Printer cartridge including infrared absorbing ink

  • US 20050068392A1
  • Filed: 10/13/2004
  • Published: 03/31/2005
  • Est. Priority Date: 05/25/1999
  • Status: Active Grant
First Claim
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1. A cartridge for a printer, the printer adapted to print visible information that is visible to the human eye and invisible information that is invisible to the human eye but can be read by an optical reader device, the cartridge comprising:

  • a housing defining a plurality of storage areas;

    wherein, at least one of the storage areas contains a visible colorant for the printer to print the visible information; and

    , at least one of the storage areas contains infrared absorbing ink for the printer to print the invisible information.

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