二次添加打印文件检验现状  

Status of Examination on Second Added Printing

作　　者：韩星周[1] 韩元利 秦达[1] 郝红光[1] HAN Xingzhou;HAN Yuanli;QIN Da;HAO Hongguang(Institute of Forensic Science,Ministry of Public Security,Beijing100038,China;Ministry of Education's Key Laboratory of Evidence Science,China University of Political Science and Law,Beijing100088,China)

机构地区：[1]公安部物证鉴定中心,北京100038 [2]中国政法大学证据科学教育部重点实验室,北京100088

出　　处：《刑事技术》2018年第6期485-488,共4页Forensic Science and Technology

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(No.2018JB022);公安部重点实验室资助课题(No.2014KFKT05;2014KFKT06)

摘　　要：打印文件检验是文件检验领域的重要组成部分。在办案实践中笔者经常需要对文件是否二次添加打印进行鉴定。为了调研国内文件检验实验室对激光二次添加打印文件检验的现状,尤其是对检验方法、检验特征的调研,包括特征、方法的选取,特征价值高低的认识,笔者参与组织实施了一次国内20家综合实力较强的文件检验实验室检验现状的调查,包括公安、检察、军队、院校等系统。20家文件检验实验室均做出了正确的检验意见,满意率为100%。选取的检验方法、特征经汇总主要集中在包括版式、成份、微观形态等20个方面,有的特征/方法选用实验室数量较多,比如墨粉的微观形态检验选用率为100%,有些特征仅有1家实验室采用,如质谱、多光谱和量化分析。整体上来看,二次添加打印文件检验的现状较好,但在检验能力上各家实验室存在一定的差异。根据现有的检验技术和方法现状,撰写了二次添加打印文件检验的技术规程。Printing document examination,an important item of questioned document identifi cation,is frequently required to verify whether a document includes the content made by second added printing.Second printing document is the one that the document is formed through printing at least twice through same one or different printer.A survey was conducted about the status of second printing examination,with its emphasis placed onto the examination methods,selected characteristics and applicable values.In this maneuver,China’s20competency-high laboratories of questioned document examination were convened from the public security,procuratorate,the military and higher education.All the 2 0laboratories answered correctly,leading the satisfaction rate being100%.A summary was thereby made with the methods and characteristics chosen by the 2 0labs so that20main aspects were focused on the items such as the layout,composition and morphology.Some features/methods are popular with the 2 0laboratories,e.g.,the morphology of toners being selected by100%,while only one laboratory used such features as mass spectrometry,multi-spectral and quantitative analysis.Conclusively,the status of second printing examination is good although there are differences in their ability among laboratories.Based on the present techniques and current methods from this survey,the technical regulations and procedures were written for the second printing document examination.

关 键 词：文件检验 二次添加打印 打印特征 错位偏离特征 

分 类 号：DF794.2[政治法律—诉讼法学]