Finger-moistening means for fingerprint recognizing apparatus

Details Finger-moistening means for fingerprint recognizing apparatus Finger-moistening means for fingerprint recognizing apparatus

1998-07-15

1999-03-09

Edwards, Laura

Coating apparatus

Body member printing type

118244, 118260, 118263, 118268, 427 1, 427429, B41K 100

Patent

active

058794549

ABSTRACT:
A finger-moistening device for fingerprint recognizing apparatus includes: a container filled with a non-volatile oil or liquid in the container, a powder-metallurgy made roller rotatably mounted and capillarily impregnated in the container to form an oil-impregnated roller, and an upper cover covering the container and having an opening for protruding a peripheral portion of the roller outwardly from the cover and the container for spreading a thin layer of oil or liquid onto the finger of a person to be detected to increase the cohesion between the finger and a prism surface of the fingerprint recognizing apparatus for obtaining a clear fingerprint image for a qualified fingerprint recognition.

REFERENCES:
patent: 3960632 (1976-06-01), Gaines et al.
patent: 4262623 (1981-04-01), Smith, III et al.
patent: 5721006 (1998-02-01), Williams
patent: 5737071 (1998-04-01), Arndt

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