Classic Series

It is mainly used in high-end anti-counterfeiting fields, such as currency, passports, important bills, etc. For example, on the banknotes of some countries, interference optical color-changing ink is used to print specific patterns. It is one color when viewed from the front, and changes to another color when tilted at a certain angle. This unique optical effect is difficult to imitate.

Magnetic Series

It adds magnetic materials to the optical color-changing ink. The color-changing effect is due to the optical interference and other characteristics of the optical color-changing pigment itself. On the other hand, under the action of an external magnetic field, the magnetic material changes the arrangement of the pigment particles, resulting in color changes. For example, changes in the spacing and angle of the particles will affect the reflection and refraction paths of light, producing different color effects.

Transparent Series

From the appearance, it has good transparency. When there is no color change effect, it will hardly cover the base color of the printed material, and the color of the bottom layer can be seen. Its color change principle is mainly achieved through special optical materials and structures. It uses technologies such as multi-layer nano film interference. These films have different refractive indices. When light is irradiated from different angles, the reflected and refracted light interact with each other, making the ink show different color changes, and these changes will not be too much interfered by the bottom color.