激光打印文件的文字色料与印文色料形成先后顺序的检验是文件检验领域的难题之一。除了从传统的显微检验法来判断激光打印文件的朱墨时序,还可以从定影转印法、测量笔画增宽带检验法、微痕迹色差分析系统检验法、拉曼光谱法、显微分光光度法、扫描电镜检验法和计算机软件辅助检验法等新检验方法进行判断。在实际检验中,应遵循先无损后有损原则,系统进行检验。 One of the problems in the field of document inspection is the examination of the sequential formation of the writing material and the printing material in the laser printing document. In addition to judging the ink timing of laser printed documents from the traditional microscopic test, it is also possible to determine the sequence of the ink from laser printing documents, such as the fixing transfer method, the test for measuring the width of the strokes, the trace analysis system, the Raman spectroscopy, , Scanning electron microscopy and computer software-assisted testing of new testing methods to judge. In the actual test, should be followed first lossless principle, the system test.