ISSN: 0022-1198
CODEN: JFSCA
Page Count: 10

Identification of Photocopiers from Fusing Roller Defects
James Gerhart, F
Special agent document examiner, Federal Bureau of Investigation, DC

(Received 22 March 1991; accepted 3 May 1991)

Abstract

A sampling of 27 photocopiers using the indirect electrostatic process were examined for fusing roller damage of significance to the document examiner. Distinctive indentation patterns were present on some copies produced, which were sufficient for identification and for establishing that the copies had been in physical contact with the copiers. The frequency and nature of the fusing roller defects observed is described.

Keywords:
questioned documents, photocopiers, class characteristics, fusing rollers, identification

Paper ID: JFS13220J
DOI: 10.1520/JFS13220J
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