仿生指纹膜及印章膜的印痕检验  

Impression Examination of Bionic Fingerprint Membrane and Seal Membrane

作　　者：蔡立红[1] 袁兆锋[1] 

机构地区：[1]广东警官学院,广州510230

出　　处：《刑事技术》2016年第1期62-64,共3页Forensic Science and Technology

摘　　要：目的研究建立指纹膜及印章膜印痕的检验方法。方法制作指纹膜、印章膜样本,以红色印泥为介质,在收据纸上捺印指印、印章印及指纹膜、印章膜印痕,观察指纹膜、印章膜印痕的特点及其与真实造型体形成痕迹之间的差异。结果对于指纹膜印痕的检验,可根据指纹特征点进行比对,得出指印与膜印同一认定的结论;但相比指印,膜印的纹线较为粗糙、无明显汗孔特征、其边缘易起角、有气泡、有印泥堆积等特征。对于印章膜印痕的检验,当特征反映不明显时,也易得出印章印与膜印同一认定的结论 ;相比印章印,印章膜印痕容易出现变粗、字体细节变形、印章膜底部特征、印泥深浅不一及气泡等特征,印痕纹线也相对较宽。结论对硅胶材料制作的指纹膜、印章膜印痕的检验,应抓住其本质特征,注意其制作特征,寻找其使用特征。Objective To study the characteristics of impressions produced with bionic fingerprint membrane and seal membrane and to discuss the examination techniques. Methods Experiments on the bionic fingerprint membrane and seal membrane, both made from silicone material, were designed with red inkpad as the medium and the receipt paper as the displaying object. The fingermarks and seal marks were made along with the obtainment of impressions of fingerprint membrane and seal membrane through the subjects being pressed on displaying objects. The characteristics of the impressions from relevant membrane were observed and compared with the real ones. Results The impression of fingerprint membrane could be identified by comparison of its feature with that of fingermark because fingerprint membrane had shown rough lines, irregular edges, bubbles, inkpad accumulation and no obvious sweat-pore imprints. As for seal membrane impression, it appears rough lines, font details deformation, revealing matrix specifics of the seal membrane itself, inkpad accumulation, bubbles, and relatively wide impression lines. Conclusions For the examination of impressions of fingerprint membrane and seal membrane, it can be carried out based on the following three aspects： their essential features, fabrication traits and distinctions caused from use.

关 键 词：指纹膜 印章膜 印泥堆积 

分 类 号：DF794.1[政治法律—诉讼法学]