Li Biao, Ouyang Guoliang
Department of Document Examination, National Police University of China, No. 83 Tawan Street, Shenyang City, 110854, China.
J Forensic Sci. 2017 Mar;62(2):476-482. doi: 10.1111/1556-4029.13283. Epub 2016 Nov 17.
Examining the sequence of intersecting seal and laser printing line is a significant method of determining the authenticity and validity of documents. In this study, five brands of stamp pad inks, three types of inkpads and seven kinds of laser printers were used to make heterogeneous line intersections. Observation method of physical characteristics, scraping technique and fluorescence method was used to determine the sequence of intersecting lines. Distinguishing features were noted between the materials produced in both sequences. As the results obtained from the study were positive, these features might provide a scientific basis for accurately determining the sequence between laser printing line and inkpad (stamp pad ink) seal.
检查印章印油和激光打印线条的交叉顺序是确定文件真伪和有效性的重要方法。在本研究中，使用了五个品牌的印台油墨、三种类型的印台和七种激光打印机来制作异质线条交叉。采用物理特征观察法、刮擦技术和荧光法来确定交叉线条的顺序。记录了两种顺序产生的材料之间的区别特征。由于研究获得的结果是肯定的，这些特征可能为准确确定激光打印线条和印台（印台油墨）印章之间的顺序提供科学依据。
