Temperature sensitive security document
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 10, 1997
Issued Date -
N/A
app pub date -
Jun 21, 1995
filing date -
Apr 5, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
To prevent unauthorized duplication of important security documents, an improvement in security or protected documents is disclosed. The security document includes a substrate having top and bottom surfaces where at least one of the surfaces is adapted to carry printed copy thereon. A colored background is printed on at least a portion of one of the surfaces, such as the surface which is adapted to carry printed copy, using a temperature sensitive ink. The security document also includes copy printed on at least a portion of the one of the surfaces adapted to carry printed copy thereon. With these features of construction, the security or protected document contemplates the copy being printed by utilizing a temperature insensitive ink.
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