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Image forming apparatus, system, and method having an anti-counterfeiting function

  • US 6,515,755 B1
  • Filed: 03/19/1999
  • Issued: 02/04/2003
  • Est. Priority Date: 03/19/1998
  • Status: Expired due to Fees
First Claim
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1. An image forming apparatus for use in a network system including a network and at least one print-data-outputting apparatus, wherein each of said print-data-outputting apparatus sends via said network print-data including information regarding the print-data-outputting apparatus to the image forming apparatus for outputting a hardcopy of said print-data, the image forming apparatus comprising:

  • print-data-receiving means for receiving print-data from said at least one print-data-outputting apparatus via the network;

    judging means for recognizing characteristics of said received print-data and judging whether reproduction of said received print-data is legally forbidden;

    image-processing means for altering said received print-data so as to cause the fidelity of the reproduction of the received print-data to be lost and adding to altered print-data identification information identifying the print-data-outputting apparatus sending the print-data;

    control means for activating said image-processing means, when said judging means judges said received print-data to be legally forbidden for reproduction, so as to alter said received print-data and add to said altered print-data said identification information; and

    printing means for printing an image of said altered print-data and said added identification information on a sheet of paper and outputting said sheet as a hardcopy.

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