Latent fingerprint detection

Details Latent fingerprint detection Latent fingerprint detection

C - Chemistry, Metallurgy

09

K

31/2, 117/6

C09K 3/00 (2006.01) B41M 5/00 (2006.01) B41M 7/00 (2006.01) C09K 3/30 (2006.01) G06K 9/00 (2006.01)

Patent

CA 1124051

TITLE LATENT FINGERPRINT DETECTION INVENTORS Francis Michael Kerr Alan D. Westland ABSTRACT OF THE DISCLOSURE 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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