Fingerprint detection

Patent · Wed Jan 01 00:00:00 EST 1992

OSTI ID:868115

Saunders, George C ^[1]

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1. Rt. 1, Box 428B, Espanola, NM 87532

A method for detection and visualization of latent fingerprints is provided and includes contacting a substrate containing a latent print thereon with a colloidal metal composition for time sufficient to allow reaction of said colloidal metal composition with said latent print, and preserving or recording the observable print. Further, the method for detection and visualization of latent fingerprints can include contacting the metal composition-latent print reaction product with a secondary metal-containing solution for time sufficient to allow precipitation of said secondary metal thereby enhancing the visibility of the latent print, and preserving or recording the observable print.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• Assignee: Saunders, George C. (Rt. 1, Box 428B, Espanola, NM 87532)
• Patent Number(s): US 5079029
• OSTI ID: 868115
• Country of Publication: United States
• Language: English

Related Subjects

fingerprint
detection
method
visualization
latent
fingerprints
provided
contacting
substrate
containing
print
thereon
colloidal
metal
composition
time
sufficient
allow
reaction
preserving
recording
observable
composition-latent
product
secondary
metal-containing
solution
precipitation
enhancing
visibility
colloidal metal
time sufficient
reaction product
metal composition
substrate containing
secondary metal
containing solution
substrate contain
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