All kinds of photocopier toner

The use of printers to generate misstate documents has become a common practice in today’s world. The investigation and identification of the printed matter in the mistrust documents may bargain important intelligence about the nature of the document. In the present study, a total number of 200 black/ white and color toner samples both from laser printers and photocopiers were exam using diffused reflectance UV-Vis spectroscope. The present research is separated into two parts; visual avoidance and discrimination by [...]