Classification and identification of color photocopiers by FT-IR and GC/MS

Nissim Mizrachi*, Zeev Aizenshtat, Shlomo Levy, Rina Elkayam

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Colored toner samples and counterfeit money processed from color photocopiers were collected from the same six manufacturers. Through infrared spectroscopy, a spectral match between the standard toner prowder and the toner extracted from the respective copies counterfeit banknote and documents was achieve. The results allowed the identification of the manufacturers and models, except for one manufacturer for which only partial identification was obtained. The toners were characterized and classified into different groups. Characterization or elimination of the toner extracted from counterfeit money processed by suspected photocopiers, is foreseen through building a transpose library of infrared data. Gas chromatography/mass spectrometry results showed that it can be used as a complementary method.

Original languageEnglish
Pages (from-to)353-361
Number of pages9
JournalJournal of Forensic Sciences
Issue number2
StatePublished - Mar 1998
Externally publishedYes


  • Colored toners
  • Counterfeit money
  • Criminalistics
  • Forensic science
  • Fourier transform infrared spectroscopy
  • Gas chromatography
  • Mass spectrometry
  • Photocopiers
  • Questioned documents


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