添改文件属于变造文件的一种,在污损文件检验中占据重要的地位。对一份疑是添改的文件进行判定,不仅要看形成文件的物质材料的理化性质是否遵循其正常的变化规律,还要看整份文件的形成过程是否符合正常的行文程序。文章以判断纸张折痕与写印字迹的先后次序为突破口,制作了各种色料与纸张折痕交叉的实验材料,利用显微镜和文检仪对交叉部位进行观察,总结出不同交叉次序时所呈现出来的表观特征,以期对添改文件的识别提供一定的帮助。 Tim changes in the file is a kind of altered files, in the defaced file test occupies an important position. The judgment of a document that is suspected of being altered depends not only on whether the physical and chemical properties of the material documents that formed the document follow its normal pattern of change but also on whether the formation of the entire document complies with the normal process of writing. In order to determine the order of paper crease and handwriting writing as the breakthrough point, the paper made a variety of experimental materials that cross the crease and paper crease. The cross sections were observed by microscopy and text inspection instrument, Come out of the appearance of features, with a view to Tim change document identification to provide some help.