Various types of security ink features and applications

1 pressure-sensitive security ink

The principle of anti-counterfeiting is to add special chemical reagents or pressure-sensitive, color-changing compounds or microcapsules to the ink. Its security features are colored or invisible graphics printed with this type of ink. When the hard object or tool is rubbed or pressed, chemical pressure change or discoloration of the dye of the micro-limb capsule breaks. The existing color and colorless points, pressure-induced color red, green, blue, purple, yellow and other colors, according to the user's request to select the color of the display and design of the secret pressure sensitive anti-counterfeiting ink must have the following security features: Under pressure or friction, it can change from colorless to colored.

2 Water-sensitive security ink

The principle of anti-counterfeiting is that the color material contains substances that change with humidity. The anti-counterfeiting feature is that the dry state is colorless, and the wet state becomes colored. This ink is reversible and irreversible, with blue, green, red and black colors.

Water-sensitive security inks must have the following security features: change color with water.

3 phosphorescent anti-counterfeit ink (or anti-counterfeiting anti-counterfeiting ink)

Luminous ink is a type of fluorescent ink. Some phosphorescent effects of sulfides/copper phosphors and calcium sulfide/germanium phosphors are included in light-storing pigments. Organic phosphorescent substances have also been developed and used in China. Phosphorescent anti-counterfeiting inks must have the following security features: Not only does the UV lamp excite visible light, but the UV lamp can continue to glow.

4 LCD ink

The liquid crystal ink means that a compound having crystalline properties is added to the ink. Under the influence of weak current and temperature, the liquid crystal changes its crystal lattice and shows bright and dark patterns and colors. The ink-printed pattern can react with temperature changes. If you print a calendar, it will show different colors as the temperature of the four seasons changes. Promote the use of packaging and decoration, its security is also more prominent.