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Types of Prints

Types of prints & how to develop latent prints

Plastic Print Formed by an imprint into a soft material such as wax or clay; a 3D impression.
Visible Print A print in a colored material such as blood or ink.
Latent Print An invisible print found on any surface (window, desk, etc) that must be developed in order to study it.
Dusting A way to develop latent prints that uses a fine powder on a hard, nonabsorbent surface. Prints are then lifted using clear sticky tape.
Iodine Fuming A way to develop latent prints where crystals react with the fatty oils in the finger to form short lasting golden brown print. Works best on soft porous surfaces like paper.
Ninhydrin A way to develop latent prints that reacts with the amino acids left by the finger to form a orange to purple image. Works best on porous surfaces like paper.
Silver Nitrate A way to develop latent prints that reacts with the salt left from perspiration in the same way that photographs are developed.
Cyanoacrylate ester A way to develop latent prints where superglue reacts with print residues to make a white, permanent impression. Works best on hard, nonporous surfaces like metal & glass.
Created by: nmorris


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