Process for the authentication of documents utilizing encapsulated toners
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United States of America Patent
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May 4, 1993
Grant Date -
N/A
app pub date -
Nov 4, 1991
filing date -
Nov 4, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
A process for the authentication of documents which comprises generating developed documents in an electophotographic apparatus, or in a laser printer, with an encapsulated toner comprised of a core comprised of polymer, pigment, and an infrared absorbing component, and thereover a polymeric shell; and subjecting the document to an infrared reader whereby the near infrared absorbing component is detected spectroscopically.
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