Recognition of Sequence of Print and Ink Strokes: Investigation the Effect of Handwriting Pressure, Hue of Ink, Printer and Paper Type

By introducing of digital techniques, forensic document examiners has been encouraged to work with better accuracy in nondestructive ways. The aim of this study was to present a nondestructive, accessible, economic (affordable), user friendly, portable, useful and easy technique for specifying the order of crossing lines of ink stroke and printed text. The intersections of LaserJet and Inkjet prints in different colors and brands under various handwriting pressures and papers were examined with a digital microscope. The 2414 exemplars were prepared on two types of A4 papers. For the Inkjet printer, the sequence of printed text and ink stroke cannot be recognized. For LaserJet printer, the results showed the outcomes indicated using digital microscope is a good option in defining the sequence of penink strokes in different colors and black toner in most examples. In the blue, black and red hues, the sequence of print and ink is recognizable in most cases. For green color, no specific results were observed.