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ORIGINAL ARTICLE
Year : 2017  |  Volume : 3  |  Issue : 2  |  Page : 68-71

Study on the relationship of continuous laser printing and the distance of trace on the OPC


1 QD Examination Division, Institute of Forensic Science, Ministry of Public Security, Beijing 100038; QD Laboratory, Criminal Police University, Shenyang 1110035, China
2 Collaborative Innovation Center of Judicial Civilization, University of Political Science and Law, Beijing 100088, China
3 QD Examination Division, Institute of Forensic Science, Ministry of Public Security, Beijing 100038, China

Correspondence Address:
Xingzhou Han
Institute of Forensic Science, Ministry of Public Security, Beijing 100038
China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/jfsm.jfsm_48_17

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This thesis aims to seek the relationship between photosensitive drum cyclical trace distance of two pages (shorted for L') and continuity printing of laser printers. Characteristics quantification, statistics are chosen to evaluate the data and results. It is indicated that the regularity is existed between L' and continuity printing, and regular performance between different models of HP and Canon printers are consistent. According to the data, L' of continuous printing are summed up, the probability of replacing the front page and the middle page which can meet the continuity regularity are analyzed. The numerical interval is given of noncontinuous printing. The study can enhance the scientificity of printing document examination and have innovation and practical significance in civil disputes, criminal cases, and social community.


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