Toppan Printing Co., Ltd. develops a "two-color pearl ink" that will produce two kinds of color changes from different perspectives. It can be used in the card industry of the financial industry and has the dual characteristics of high-grade design sense and strong security. Using this technique, cards with the same pattern as the "two-color pearl passbook" that has already begun to be sold can be made.
The ink has a pearl-like luster. From a different point of view, there will be two kinds of color changes. There are three kinds of color changes, namely: from red to green; from blue to beige; from green to beige. The color change is obvious, the gloss of the ink is also very good, and the design grade is higher than the ordinary pearl ink.