Wang Shaofang, Lu Caijun, Wang Gang
School of Law, Zhongnan University of Economics & Law, Wuhan, 430073, China.
Department of Investigation, Hubei University of Police, Wuhan, 430034, China.
J Forensic Sci. 2015 Nov;60(6):1594-600. doi: 10.1111/1556-4029.12830. Epub 2015 Aug 24.
Examining the sequences of printing and writing is a significant method of determining the authenticity and validity of documents. Forensic document examiners have extensively studied crossing lines, which has produced useful information. However, the sequence for laser printing and rollerball pen writing without crossing strokes has not been studied. To solve this problem, volunteers were invited to write characters on A4 paper with different rollerball pens using two sequences. Four laser printers applied print to these sheets, and the materials were examined using an Optem A-Zoom2 video tomography microscope. Consequently, distinguishing features were noted between the materials produced in both sequences. These features might provide a scientific basis for accurately determining the sequence between laser printing and rollerball pen writing in the absence of intersecting strokes.
检查打印和书写的顺序是确定文件真实性和有效性的重要方法。法医文件检验人员对交叉线条进行了广泛研究，得出了有用信息。然而，对于无交叉笔画的激光打印和滚珠笔书写的顺序尚未进行研究。为解决这一问题，邀请志愿者用不同的滚珠笔按两种顺序在A4纸上书写字符。四台激光打印机在这些纸张上进行打印，然后使用Optem A-Zoom2视频断层显微镜对材料进行检查。结果发现，两种顺序产生的材料之间存在明显特征。这些特征可能为在没有交叉笔画的情况下准确确定激光打印和滚珠笔书写的顺序提供科学依据。
