Differentiation of Inks Used for Seals by Confocal Raman Microscopy and Fourier Transform Infrared Microscopy

摘要

The analysis of seals, mostly via the ink types, can provide evidence to authenticate the related documents and can play a key role in legal cases. In the present study, a method to discriminate red seal inks using Raman microscopy and Fourier transform infrared (FT-IR) spectroscopy was developed. The results showed that the developed Raman method was powerful, sensitive, and rapid, and can be used to directly differentiate the red inks with paper substrates; thus, this method would be helpful for ink analysis in the forensic, drawing, and cultural heritage fields.