Optical Variable Ink

Optically variable inks exhibit two different colors when observed from distinct angles.

The initial color is visible at a 90-degree viewing angle, while at a 30-degree angle, the first color shifts, and the second color becomes more prominent.

Common combinations include red-green, blue-green, gold-green, green-magenta, and gold-silver, among other possibilities.

The typical manufacturing process involves dissolving photochromic pigment in a solvent and adding a binder for specific purposes. Another method involves dissolving photochromic pigments into overlapping monomers, pulverizing these polymer ultrafine particles, and converting them into powders for use as pigments.

The higher cost of optical variable ink serves as an effective deterrent against unauthorized copying, particularly in smaller quantities.

• Large Order Quantity
• Long Production Lead Time
• High Anti-Forgery
• High Cost Budget

The challenge with optical variable ink lies in its potential difficulty for ordinary individuals to discern. Colors produced with standard inks can create the illusion of different colors at varying angles due to light reflection.