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Method and device for monitoring stamps on mail

  • US 7,529,386 B2
  • Filed: 01/23/2002
  • Issued: 05/05/2009
  • Est. Priority Date: 02/02/2001
  • Status: Expired due to Fees
First Claim
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1. A method for checking a postage indicium applied onto a mailpiece, comprising:

  • detecting graphic information in at least one selected reading area of the mailpiece by a symbol recognition unit;

    subsequently comparing the detected graphic information to stored representations of postage indicia;

    evaluating the results of the comparison;

    when impermissible symbols are recognized, a first device for checking the presence of a security feature checking whether, in spite of the recognition of an impermissible symbol, a legitimately generated postage indicium is present, and for this purpose, checking whether the symbols are contained in a database;

    stamping and conveying mailpieces that have been recognized as being valid into a compartment for permissible mailpieces;

    conveying symbols that are not contained in the database to a second device for checking the presence of a second security feature, wherein checking for the presence of a second security feature comprises irradiating the mailpiece with light and detecting superfluorescence caused by the irradiating light;

    if a second security feature is present, stamping and conveying the mailpieces into a compartment for permissible mailpieces; and

    ,rejecting and conveying remaining mailpieces into a compartment for impermissible mailpieces.

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