黑色签字笔墨水成分及书写时间的探讨

Study on Ink Composition and Writing Time of Black Signature Pen

摘要: 本研究采用显微红外光谱仪及显微分光光度计对黑色字迹进行检测，使得鉴定结果更具合理性和科学性。实验通过使用偏光显微镜以及显微红外光谱仪对实验中用到的160种样本黑色签字笔分为了三类。并通过显微分光光度计对该三类黑色签字笔笔迹在不同时间段的时候对可见光的吸收能力进行测量，并对测量所得结果进行色度分析，最终得到这三类黑色签字笔书写时间的规律，为经济类案件中黑色签字笔墨水字迹形成时间的鉴定提供一定帮助。

Abstract: In the inspection of various documents, the most common thing is the identification of black handwriting. However, whether the types of black writing are the same and whether the writing time is consistent in such identification have always been a concern. In this study, the black hand-writing was detected by micro infrared spectrometer and micro spectrophotometer, which made the identification result more reasonable and scientific. In the experiment, 160 samples of black signature pens were divided into three categories by using polarizing microscope and micro in-frared spectrometer. The absorption capacity of visible light of the three types of black signature pens’ handwriting at different time periods is measured by a micro spectrophotometer, and the chromaticity analysis of the handwriting of the three types of black signature pens is carried out from the absorption curve, so that the rule of writing time of the three types of black signature pens is finally obtained.