Comparative Study between Variable Computer Printed Documents to Identify the Type of the Producing Output Devices
DOI:
https://doi.org/10.37506/ijfmt.v16i2.17905Keywords:
Forgery, inkjet printers, laser printers, photocopiers, questioned printed document.Abstract
Background: Within the last years, forgery has markedly increased and expanded to encompass
computers and printers’ usage, their wide evolution facilitated the production of fraudulent printed
documents by even non-experts. The printers and photocopiers leave their imprints on the produced
documents. Examination of printed output of a questioned document is essential as it provides
information about the producing device.
This study aims to compare the characteristics of different computer printed documents to identify the
type of the producing output devices (photocopier, inkjet, and laser printers).
Methods: 132 documents were typed and printed using different models of inkjet, laser printers
and photocopiers. The produced documents were examined with direct light digital microscope and
ultraviolet light and the printed markings were compared.
Conclusion: Our results revealed that each class of the studied printing devices induced specific criteria
on the examined printed documents. These criteria are class characteristics but differ from one type of
device to another.
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