Method and apparatus for printing and prevention of copying of postage indicia
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 15, 2000
Grant Date -
N/A
app pub date -
Jan 26, 1998
filing date -
Jan 29, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Postage indicia are printed on mail items using an ink having a characteristic such that the ink is rendered invisible when subjected to light or light and heat of sufficient intensity. When an attempt is made to copy the imprint of a postage indicia on a mail item for which proper accounting has been effected the imprint is subjected to a butst of light or light and heat and the ink becomes invisible and prevents copying of the imprint. The imprint of the postage indicium may overly and obscure a void mark which becomes visible and is copied in the event of attempting to copy the original authentic postage indicium.
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