Journal Published Online: 01 March 1991
Volume 36, Issue 2

Classification and Identification of Photocopying Toners by Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS): I. Preliminary Results

CODEN: JFSCAS

Abstract

A diffuse reflectance infrared Fourier transform technique is described for the analysis of raw photocopying toners and small samples of toner removed from the surface of a photocopied document. The technique gives reproducible results and makes possible differentiation of toner samples obtained from different photocopying machines. In addition, toners may be classified into a number of groups, based on the presence or absence of certain absorption bands in their diffuse reflectance spectra. Preliminary results indicate the feasibility of a database of infrared spectra for the photocopying toners available on the market. Such a database would be a valuable aid to the document examiner in the increasing number of cases involving photocopies.

Author Information

Mazzella, WD
Institut de Police Scientifique et de Criminologie, University of Lausanne, Lausanne, Switzerland
Lennard, CJ
Institut de Police Scientifique et de Criminologie, University of Lausanne, Lausanne, Switzerland
Margot, PA
Institut de Police Scientifique et de Criminologie, University of Lausanne, Lausanne, Switzerland
Pages: 17
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Stock #: JFS13047J
ISSN: 0022-1198
DOI: 10.1520/JFS13047J