Anti-counterfeiting printing technology involves many fields such as spectrum technology, printing technology, packaging technology, optics, chemistry, physics, electromagnetics, computer technology, spectral technology, printing technology, and packaging technology. It is an interdisciplinary and cross-border technology. Ink anti-counterfeiting technology is a technology that adds special substances such as solvents to ordinary ink and connecting materials, and then processes them into special anti-counterfeiting printing inks through special processes. It is widely used in the pharmaceutical packaging anti-counterfeiting industry. Color-changing anti-counterfeiting ink has the advantages of simple implementation, low cost, good concealment, bright colors, and easy inspection. In China, the color-changing anti-counterfeiting inks widely used in the special anti-counterfeiting printing industry include: anti-counterfeiting fluorescent ink, magnetic anti-counterfeiting ink, thermochromic anti-counterfeiting ink, daylight-excited anti-counterfeiting ink, optical variable anti-counterfeiting ink, pressure-sensitive anti-counterfeiting ink, infrared anti-counterfeiting ink, anti-tampering anti-counterfeiting ink, and anti-counterfeiting printing ink, which are widely used in anti-counterfeiting of bills, packaging, etc.

Anti-counterfeiting fluorescent ink is currently the most widely used anti-counterfeiting ink in pharmaceutical packaging, and it is the most important component of anti-counterfeiting technology in pharmaceutical packaging. Practice has proved that anti-counterfeiting fluorescent ink with fluorescent pigments added has good water resistance, acid resistance, alcohol resistance, and good color-changing effect, clear anti-counterfeiting features, and is not easy to counterfeit. Therefore, it is widely used in ordinary drug packaging and blister packaging.