Finger-printing systems & method

Details Finger-printing systems & method Finger-printing systems & method

1989-03-08

1991-04-23

Bell, Janyce

Coating processes

Body member printing

118 315, A61B 5117

Patent

active

050099191

ABSTRACT:
A fingerprinting system comprising means capable of releasably retaining a liquid and a liquid composition releasably retained in said means, said liquid composition comprising a leuco chromogenic compound and an oleophilic solvent therefor, and a substrate for receiving fingerprints associated therewith, said substrate being coated on at least a portion of one surface thereof with a color-developing substance capable of reacting with said chromogenic compound to produce a colored reaction product. The invention also comprises the method of fingerprinting utilizing such system.

REFERENCES:
patent: 4232083 (1980-11-01), Buerkley
patent: 4379198 (1983-04-01), Meadows et al.
patent: 4578690 (1986-03-01), Veillette et al.

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