Method and apparatus for enhancing live-scan fingerprint reader images
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United States of America Patent
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Apr 7, 1998
Grant Date -
N/A
app pub date -
Aug 16, 1996
filing date -
Aug 16, 1996
priority date (Note) -
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Abstract
A method and apparatus for improving the optical boundary between a person's fingerprint ridges and the surface platen of a live-scan-imaging apparatus includes providing an absorbent pad containing chemicals selected from the nonvolatile oils, oil amides, fatty alcohols and fatty acid esters, placing the person's finger to be scanned on the surface of the absorbent pads to coat the fingerprint ridges and subsequently placing the person's finger with the coated fingerprint ridges on the platen of the imaging apparatus to provide a high contrast between the ridges and valleys of the fingerprint area.
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