关键词: 纸张, 潜在指印显现, 影响因素, 对策

Abstract:

Latent fingerprints are the invisible fingerprints which can be visualized only by some special methods. The visualizing effect of latent fingerprints on paper is influenced by many factors, such as the modeling subject and its force magnitude, paper condition and its quality, deposit time and environment condition, etc. In the practice work, to get a good visualizing effect of latent fingerprints, the suitable visualization method ought to be chosen on the premise that the sample)s properties have been thoroughly understood. The basic principle of visualization is to use the non-invasive method before other method that could spoil the sample.

Key words: paper, visualization of latent fingerprint, influencing factor, countermeasure