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Print supply monitoring

  • US 7,237,485 B2
  • Filed: 08/13/2004
  • Issued: 07/03/2007
  • Est. Priority Date: 01/25/1999
  • Status: Expired due to Term
First Claim
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1. An identification card manufacturing device comprising:

  • a consumable supply;

    a card transport configured to feed a card along a print path;

    a printhead configured to print an image on a surface of the card;

    a supply circuit mounted to the supply and including a memory that contains supply information that has been encrypted in accordance with a first encryption method;

    a supply circuit reader configured to re-encrypt the supply information in the memory in accordance with a second encryption method that is different from the first encryption method; and

    a controller configured to decrypt the re-encrypted supply information.

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