Method and apparatus for enhancing live-scan fingerprint reader images
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United States of America Patent
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Issued Date -
Aug 9, 2012
app pub date -
Feb 4, 2011
filing date -
Feb 4, 2011
priority date (Note) -
Abandoned
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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, which includes providing an absorbent pad containing chemicals selected from the nonvolatile, non-fatty alkyl esters of benzoic, salicylic, and anthranilic acids; benzyl alcohol and its non-fatty alkanoic acid esters and esters of benzoic, salicylic, and anthranilic acids and ethers of non-fatty alkyl esters; and the non-fatty alkanoic acid triesters of glycerol, placing the person's finger to be scanned on the surface of the absorbent pad to coat the fingerprint ridges and subsequently placing the person's finger with the coated fingerprint ridges on the imaging apparatus to provide a high contrast between the ridges and valleys of the fingerprint area and a high resolution of the fingerprint ridge details.
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