不锈钢刀面上重叠指印分离技法的探讨  

Probing into the Separation Techniques of Overlapped Fingerprints on the Stainless Steel Knife Surface

作　　者：王伟[1] 

机构地区：[1]四川警察学院,四川泸州646000

出　　处：《四川警察学院学报》2012年第5期70-74,共5页Journal of Sichuan Police College

摘　　要：实验目的:不锈钢刀面上两种不同物质的重叠指印分离,包括(1)分离不锈钢刀面上先汗液后灰尘指印和先灰尘后汗液指印,(2)分离不锈钢刀面上先血后灰尘指印,(3)先灰后血指印和分离不锈钢刀面上先油后灰尘指印和先灰后油指印。实验(1)中汗液与灰尘指印,无论是灰尘在上还是在下,分离出来的汗液和灰尘指印效果都比较好,都有较高的检验价值。实验结果:实验(2)中灰尘与血指印,无论血和灰尘谁在上或在下,分离出来的血指印和灰尘指印效果都比较理想,具有较高的检验价值。实验(3)中灰尘与油指印,无论油指印在上或是在下,效果都比较理想,但灰尘指印的按捺顺序对灰尘指印有一定影响。Objective： the separation of two different substances overlapped fingerprints from stainless steel knife surface, including （1） the separation from sweat-on-dust fingerprints with dust-on- sweat ones; （ 2） the separation of blood - on-dust fingerprints with dust-on- blood ones ; （3） the separation from oil-on- dust fingerprints with dust-on-oil ones. In the first experiment, the sweat-on-dust fingerprints, either up or down, can be well separated out with a higher test value. In the results of second experiment, the dust-on- blood fingerprints, either up or down, can be separated out ideally with extreme test value. In the third experiment, the dust-on-oil fingerprints, either up or down, the effects are more ideal, but the sequence has certain influence on the dust fingerprints.

关 键 词：重叠指印 疑难痕迹 照相分离 重塑证据 

分 类 号：D918.2[政治法律—法学]