人为老化文件的鉴别

Identification of Artificial Ageing Documents

人为老化是伪造或变造文件的高科技手段之一。文件人为老化的机理有纸张老化机理和色料老化机理。通过紫外线照射、烘烤、溶液浸泡和揉搓沾污等手段可以人为老化文件 ,但由于所使用的手段不同而使人为老化后的文件各具相应特征。针对不同的老化特征 ,选择使用适合的鉴别方法可以确定文件制成的真实时间。

Artificial ageing is one of the hi-tech means to forge or alter documents. The mechanism of artificial ageing are paper ageing and color ageing. Artificial ageing can be made through means of ultraviolet rays lighting, toast, solution soaking and rubbing and contamination, but every aged document has relative characteristics due to the different means. To ascertain the real making time of the document in view of the ageing characteristics and choosing the suitable identification means.