共查询到19条相似文献,搜索用时 203 毫秒
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几种朱墨交叉时序的检验方法及其比较分析 总被引:2,自引:0,他引:2
文件朱墨交叉时序的确定一直是困扰文检界的难题之一.本文简要介绍了目前常用的六种检验方法,并结合五个典型案例对各种检验方法进行比较分析,以探讨针对不同形成条件的文件物证进行检验时采用哪些检验方法更为有效的解决问题.希望能够在同类问题的研究上达到抛砖引玉的效果. 相似文献
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目的 建立荧光法判断激光打印文件朱墨时序的检验方法,并分析不同型号的激光打印机制成的文件与不同材质的印章印文的采墨时序的特征.方法 利用VSCS000文检仪和Photoshop软件,采用荧光法对激光打印文件与印章印文交叉部位的特征进行检验,并对不同型号的打印机制成文字与不同材质的印章印文交叉部位的荧光特征进行分析比对.结果 发现常出现的共性特征为:制成文字先墨后朱,交叉部位的黑色墨迹颜色变淡并可见紫色荧光;先末后墨,交叉部位常常出现黑色墨迹缺损的现象,在缺损处可见紫色荧光点.但也表现出其特有的特征.结论 不同型号的打印机制成的文件与不同材质的印章朱墨时序所表现出来的特征不尽相同,在具体案件鉴定中应进行综合判断. 相似文献
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打印复印文件朱墨时序表观特征初探 总被引:1,自引:0,他引:1
本文详细介绍了一案例的检验过程,并通过简单实验对激光打印、静电复印形成文件的朱墨时序的表观特征进行了粗浅的探究。总体而言,两种时序在朱墨交叉点的表观特征上具有文字与印文均完整、肉眼感觉文字均压在印文之上的共同点;在两者本质的差异点上,先朱后墨表现为交叉点的墨粉与未交叉部位一致,先墨后朱表现为交叉点的墨粉光泽度增加、具有潮湿感、以及易出现水珠状的印油积聚现象。 相似文献
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文件朱墨时序的检验方法及其比较分析 总被引:2,自引:0,他引:2
文件朱墨时序的判定是文件检验领域的难题之一。本文以38篇文献为基础,综述了目前常用的解决朱墨时序问题的十一种方法。并对各种方法的适用范围、优点和局限进行比较分析,以期为文检工作者视检材的具体情况采用合适的检验方法,提供一些参考。 相似文献
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朱墨时序的检验在文件检验领域中较为常见。本文主要是在许多文献的基础上以及本人从事文检工作中取得的一点经验,对现如今经常使用的解决朱墨时序问题的几方法的优点、适用范围以及其局限性进行深入的比较分析。 相似文献
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运用高倍显微镜判断朱墨时序的方法 总被引:4,自引:1,他引:3
作者通过对手写文字与印章印文的朱墨时序的大量实验研究,并结合司法鉴定实践,总结了一套行之有效的运用高倍显微镜判断朱墨时序的检验方法,具有较大的应用价值。 相似文献
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能否准确地解读文件物证中的各种痕迹信息,有时对鉴定结论的做出至关重要。作者总结检案实践,参考有关文献,探讨了文件物证中痕迹信息的应用效果以及运用时需注意的问题。 相似文献
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本文简要回顾了文件检验学的发展历程,着重总结了当今文件检验的热点问题,包括:笔迹的自动化检验,文件的制成时间,可疑文件的无损检验,可疑文件的综合检验、可疑文件的定量检验、计算机技术在文件检验中的应用以及今后的发展趋势,文件检验工作中存在的问题进行了阐述,并针对存在的问题提出了解决方案。 相似文献
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《Forensic science international》1995,72(2):91-105
Two cases were submitted for questioned document examination involving human figure drawings. As there was little information on ‘artist’ identification in the questioned document examination literature, a sample of 107 individuals was selected to participate in a study. The respondents were requested to draw two cartoons, one naturally and one disguised, in order to determine if standard questioned document examination methods could be employed to identify the ‘artists’. The findings indicated that ‘artists’ of human figure drawings could be identified using standard handwriting identification techniques. 相似文献
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Szafarska M Wietecha-Posłuszny R Woźniakiewicz M Kościelniak P 《Forensic science international》2011,212(1-3):78-85
In the process of questioned document examination, the discrimination of inkjet printing inks is becoming more necessary due to increasingly frequent counterfeiting of documents printed by inkjet printers. Therefore, a method based on micellar electrophoretic capillary chromatography (MECC) has been developed and applied to analysis of such inks extracted from paper. With the use of an optimized and validated analytical procedure, multielectropherograms of inks taken from various models of printers made by various producers (Hewlett-Packard, Epson, Brother, Lexmark and Canon) were created. It was shown that effective differentiation of individual inks was possible in terms of migration time, order and specific shapes of characteristic peaks. By comparison of recorded UV-Vis spectra, the identification of main dyes was also achievable. The usefulness of the method was confirmed by an intralaboratory test of utility, in which several forged printouts were successfully examined. The obtained results proved that the proposed procedure is a useful tool that could be applied to ink discrimination and group identification of dyes originating from inkjet printing inks. Consequently, the developed method can be applied in the forensic field, including investigation of the authenticity of documents. 相似文献