ISSN: 0022-1198
CODEN: JFSCA
Page Count: 3

Platen Information Revealed: A Technique for Locating Latent Text on Typewriter (or Printer) Platens
Sperry, GR
Forensic Document Analyst, U.S. Postal Forensic Laboratory, TN

(Received 12 April 1993; accepted 14 June 1993)

Abstract

The implementation of a technique, utilizing an arc lamp and filters, designed to reveal latent text impressions on typewriter and printer platens. This technique allows for the location and decipherment of text on platens which are undetectable utilizing conventional sources (for example, side light techniques, VSC-1, etc.).

Keywords:
questioned documents, latent text, typewriters, printers, platens

Paper ID: JFS13588J
DOI: 10.1520/JFS13588J
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