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现场遗留疑难痕迹物证中,常见非渗透性客体上形成的油脂与灰尘重叠指印。因为此类重叠指印在重叠部位的纹线向混乱,纹线的衔接或交差不自然等,给指印的检验鉴定工作带来一定的难度。我们运用不同性质的光线对非渗透性光滑客体上由油脂与灰尘重叠指印进行反复实验,最终探讨、总结出此类疑难痕迹物证的分离与固定提取方法。在此类现场遗留疑难痕迹物证的提取和分离过程中有所突破。下面我们将以反复实践的方法探讨、总结出此类指印检材的分离方法。
Sites left traces of evidence, the common non-permeable objects formed on the overlap of fingerprints of grease and dust. Because such overlapping fingerprints in the overlapping parts of the ridge to the chaos, the convergence of the ridge line or unnatural, etc., to fingerprinting identification work to bring a certain degree of difficulty. We use different types of light on the non-permeable smooth object by the overlap of fingerprints of grease and dust repeated experiments, the final discussion, summed up the separation of such inconvenient evidence and fixed extraction method. A breakthrough was made in the process of extraction and separation of evidences of legacy of such sites. Below we will explore the method of repeated practice, summed up the separation of fingerprints of such methods.