Microporous marking structures
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United States of America Patent
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May 22, 1990
Issued Date -
N/A
app pub date -
Jun 6, 1989
filing date -
Sep 11, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved microporous marking structure has a layer of a microporous material containing a marking fluid and an absorbent backing layer superposed thereon which shortens processing time by absorbing excess marking fluid from the microporous layer. The marking structure according to the invention may be advantageously used to make a self-linking hand stamp. No lengthy step for removing excess ink from the microporous layer is needed.
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