Apparatus for reading and identifying a data carrier in card form which has printing thereon
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United States of America Patent
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Jun 22, 1999
Grant Date -
N/A
app pub date -
Apr 4, 1997
filing date -
Oct 10, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns a card-shaped data carrier comprising a card body which has an inner electronic module for contactless communication with a coding and/or reading device and an external heat sensitive layer for the visually readable display of data stored in the electronic module as a result of thermal impact. The heat sensitive layer is designed to be reversible such that marks can be inscribed in a first temperature range and existing marks can be deleted in a second temperature range. The heat-sensitive layer is disposed on the card body in at least one sub-area thereof.
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