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Abstract
<p class="first" id="d1071455e51">In document examination, it is of great importance
to determine the composition of
seal ink with different imprint times, and spectroscopic methods are widely used today.
In this research, the diffusion of seal inks from three different brands on the same
type of paper is monitored in situ by microinfrared spectroscopy and microinfrared
imaging technology. The area of the absorption peak at 1743 cm-1 gradually decreases
with increasing diffusion time. The diffusion kinetics of seal ink on paper are also
studied by analyzing the infrared spectra of seal inks at the same measuring point
with different diffusion times. The research provides a basic study in understanding
the diffusion behavior of seal ink on paper over short time spans.
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