新型手印提取胶片的制备及其在潜手印显现中的应用研究  

A Novel Gel-lifter for Developing Latent Fingerprint

作　　者：高峰[1,2] 徐晓[3] 隋吉辉 吴浩[2] 陈子龙[2] 薛静[2] 李孝君[2] 刘寰[2] 

机构地区：[1]公安海警学院,浙江宁波315801 [2]公安部物证鉴定中心,北京100038 [3]中国人民公安大学,北京100038 [4]牡丹江市公安局,黑龙江牡丹江157000

出　　处：《刑事技术》2017年第2期120-123,共4页Forensic Science and Technology

基　　金：公安部应用创新计划项目(No.2014YYCXGAES049);中央级公益性科研院所基本科研业务费专项资金项目(No.2015JB011)

摘　　要：目的制备一种新型手印提取胶片,使用该胶片对光滑和粗糙、平面和曲面的半渗透性与非渗透性客体表面潜手印进行提取。方法通过凝胶(Gel)粘性材料、聚氨酯(PU)基布及聚对苯二甲酸乙二酯(PET)膜制备新型手印提取胶片,使用该新型手印胶片对不同客体上的潜手印进行粘取,并通过暗视场照明方式对提取手印进行拍照固定。结果新型手印提取胶片对非渗透性客体上新鲜及陈旧手印、半渗透性客体上新鲜手印具有良好的提取显现效果,所提手印的纹线细节清晰、与背景之间的反差较好。结论新型手印提取胶片使用便捷、适用范围广、显现提取效果好,可有效克服客体曲面、粗糙、反光及多色对显现的干扰。Objective To make a novel gel-lifter for developing latent fingerprints on partial-porous,nonporous,rough and smooth substrates.Methods The gel-lifter was produced with adhesive gelatin,polyurethane substrate（PU） and polyethylene terephthalate film（PET）.The latent fingerprints transferred by gel-lifters were imaged under dark-field illumination.Results The gel-lifter has good effect to develop both the fresh fingerprints（whether their substrate is nonporous or partial-porous）and the aged ones on nonporous substrate,resulting in the exposed fingerprints showing clear lines of ridge and distinct contrast against the background which was otherwise substantially interfering in the image quality of the developed fingerprint especially on its curved,coarse,light-reflecting and color-various representatives.Conclusions The new gel-lifter is facile to use,wide scope to apply,and excellent to collect and develop latent fingerprints.

关 键 词：潜手印 提取胶片 非渗透性客体 半渗透性客体 手印显现 

分 类 号：DF794.1[政治法律—诉讼法学]