Data system containing a high capacity optical contrast laser recordable wallet-size plastic card
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United States of America Patent
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-
Oct 1, 1985
Issued Date -
N/A
app pub date -
Nov 21, 1984
filing date -
Dec 29, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data card having an optical, high resolution laser recording material, such as a metal-containing film, adhering to it. The strip of laser recording material has a capacity for recording at least 250,000 data bits represented by optically contrasting spots having a dimension of less than 25 microns. The optical contrast of the spots with respect to the surrounding field is at least two to one. The strip may have a preinscribed formatting pattern for positioning, timing, programming and related functions.
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