Fingerprinting compositions, systems and methods

Details Fingerprinting compositions, systems and methods Fingerprinting compositions, systems and methods

1988-10-05

1989-11-07

Bell, Janyce

Coating processes

Body member printing

106 22, 118 315, A61B 510, B41K 100, C09D 1100

Patent

active

048791342

ABSTRACT:
A self-contained liquid composition for use in making fingerprints comprising the reaction product of at least one leuco or non-leuco chromogenic compound and at least one color-developing substance in a liquid vehicle that is a solvent for said chromogenic compound and reaction product and a solvent or dispersant for said color-developing substance. The method of fingerprinting and a fingerprinting system utilizing the liquid composition are also disclosed.

REFERENCES:
patent: 3423427 (1969-01-01), Cescon et al.
patent: 3560229 (1971-02-01), Farnham et al.
patent: 3597244 (1971-08-01), Fookson et al.
patent: 4108671 (1978-08-01), Richlin
patent: 4171982 (1979-10-01), Lin
patent: 4334015 (1982-06-01), Yarian
patent: 4372583 (1983-02-01), Vassilliades
Research Disclosure (Jul. 1973), p. 42.

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