Abstract
We propose a novel method to study the drying process of tiny ink dots by using the configuration of
digital holographic microscopy. Our proposed method enables us to visualize the drying process of tiny
ink dots from reconstructed images and to qualitatively evaluate the displacement of ink dots from phase
differences. In this experiment, water-based ink was used as a sample and applied to either an OHPsheet
or a glass plate by an ink-jet nozzle. We investigated the drying process of ink dots on different
plates by the time variations of the reconstructed images of the ink dot surfaces obtained by digital
holography.
