Cheng KC, Cheng N, Wei YC
Forensic Science Laboratory, Ministry of Justice Investigation Bureau, Taipei, Taiwan, Republic of China.
J Forensic Sci. 2000 Sep;45(5):1062-70.
This study compares the identifying characteristics between the impressions made with original Chinese seals and photopolymer replicate seals, and between the impressions made with two photopolymer replicate seals that originate from one single negative. Various seal materials common to the Chinese community such as cow's horns and ivory are employed. Other than the common factors such as different incident angle upon imprinting or different degree of inking that constitute the natural variation in impressions, the physical changes of the seal materials with temperature will be considered. This study concludes that photopolymer replicate seal impressions can be differentiated from the originals in respect to print density and stroke morphology, but it is very difficult to differentiate between two photopolymer replicate seal impressions with the same origin. This study also proposes a simple method for the examination of forged Chinese seal impressions.
本研究比较了用原始中国印章和光聚合物复制印章制作的印文之间的识别特征，以及用源自同一底片的两个光聚合物复制印章制作的印文之间的识别特征。使用了华人群体中常见的各种印章材料，如牛角和象牙。除了诸如压印时不同的入射角或不同的着墨程度等构成印文自然变化的常见因素外，还将考虑印章材料随温度的物理变化。本研究得出结论，光聚合物复制印章印文在打印密度和笔画形态方面可与原始印文区分开来，但很难区分具有相同来源的两个光聚合物复制印章印文。本研究还提出了一种检查伪造中国印章印文的简单方法。
