Temperature sensitive security document

Details Temperature sensitive security document Temperature sensitive security document

1995-06-21

1997-06-10

Han, Frances

Printed matter

Having revealable concealed information, fraud preventer or...

Utilizing superposed layers

283 95, 283114, 283 57, 283 58, 283901, 283902, B42D 1510

Patent

active

056368747

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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