Latent fingerprint detection

Coating processes – Body member printing

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106 19, 106 21, 118 315, 252182, 252408, 422 61, B41M 500, C09K 330, C09K 300, G01N 3316

Patent

active

042606454

ABSTRACT:
Latent fingerprints can be detected and visualized by application to the suspected locale, of a solution, in a volatile organic solvent of selected silver salts soluble in said solvent. Suitable salts include silver perchlorate and silver trifluoroacetate. The solution is preferably applied as a spray. This non-aqueous solution minimizes smudging, "running", warping and other damage to water-sensitive material (usually inks, dyes and/or cellulosic substrates).

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C.A., vol. 48, 3080i (1954).

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