Method and apparatus for enhancing live-scan fingerprint reader

Details Method and apparatus for enhancing live-scan fingerprint reader Method and apparatus for enhancing live-scan fingerprint reader

1996-08-16

1998-04-07

Cameron, Erma

Optics: measuring and testing

Document pattern analysis or verification

427 1, 118 315, 382124, 382125, G06K 900

Patent

active

057370710

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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patent: 4053228 (1977-10-01), Schiller
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patent: 4532508 (1985-07-01), Ruell
patent: 4728186 (1988-03-01), Eguchi et al.
patent: 5088817 (1992-02-01), Igaki et al.
patent: 5189482 (1993-02-01), Yang
patent: 5395444 (1995-03-01), Arndt et al.
patent: 5448649 (1995-09-01), Chen et al.
patent: 5621516 (1997-04-01), Shinzaki et al.

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