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NCJ Number: NCJ 241229     Find in a Library
Title: Examination of Heterogeneous Crossing Sequences Between Toner and Rollerball Pen Strokes by Digital Microscopy and 3-D Laser Profilometry
Journal: Journal of Forensic Sciences  Volume:57  Issue:4  Dated:July 2012  Pages:997 to 1002
Author(s): Isabelle Montani, M.Sc. ; Williams Mazzella, Ph.D. ; Marion Guichard, B.Sc. ; Raymond Marquis, Ph.D.
Date Published: 07/2012
Page Count: 6
Document: HTML 
Type: Research (Applied/Empirical)
Language: English
Country: United States of America
Annotation: This research aimed to study the potential of digital microscopy and 3-D laser profilometry to determine line crossing sequences between a toner and an aqueous ink line.
Abstract: The determination of line crossing sequences between rollerball pens and laser printers presents difficulties that may not be overcome using traditional techniques. This research aimed to study the potential of digital microscopy and 3-D laser profilometry to determine line crossing sequences between a toner and an aqueous ink line. Different paper types, rollerball pens, and writing pressure were tested. Correct opinions of the sequence were given for all case scenarios, using both techniques. When the toner was printed before the ink, a light reflection was observed in all crossing specimens, while this was never observed in the other sequence types. The 3-D laser profilometry, more time-consuming, presented the main advantage of providing quantitative results. The findings confirm the potential of the 3-D laser profilometry and demonstrate the efficiency of digital microscopy as a new technique for determining the sequence of line crossings involving rollerball pen ink and toner. Abstract published by arrangement with John Wiley & Sons.
Main Term(s): Forensics/Forensic Sciences
Index Term(s): Document analysis ; Electron microscopy ; Investigative techniques ; Ink analyses ; Paper analysis
   
  To cite this abstract, use the following link:
https://www.ncjrs.gov/App/Publications/abstract.aspx?ID=263319

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