Fingerprinting arrangement

Details Fingerprinting arrangement Fingerprinting arrangement

1977-09-02

1979-05-01

Adams, Russell E.

Photocopying

Contact printing

Light boxes

355 47, A61B 510, G03B 2900

Patent

active

041520564

ABSTRACT:
Skin ridge pattern recording apparatus for obtaining and recording skin ridge patterns. A cylindrical transparent element is provided with a central cylindrical bore which, reflects internally. The finger is placed in the bore for producing the skin ridge patterns. The cylindrical element is mounted on a vertical column or post upstanding from a platform which carries a light source projecting a beam of light to the cylindrical element. The light source and a sensitive camera film are carried on a platform which is rotatable with respect to the cylindrical element in which the finger is inserted. The film plane of the camera remains in a fixed relationship with respect to the reflected light from the light source, the angle of incidence being determined by the position of the light source relative to the cylindrical element. The platform is motor driven so that the light source and the film plane of the camera rotate around the cylindrical element to produce the recordation of the skin ridge pattern.

REFERENCES:
patent: 3529520 (1970-09-01), Thiebault

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