What are the classifications of infrared inks？

Infrared ink is a general term for inks that produce a change effect after passing through infrared rays. According to the type, it can be divided into three classifications: infrared excitation ink, infrared absorption ink, and infrared transparent ink.

Infrared excitation ink:

• The surface is colorless after printing, and the visible light (green, red, yellow, blue) is emitted by the infrared light of 980nm, which has strong confidentiality and high technical content, and belongs to anti-counterfeiting technology products.

Infrared Absorbing Ink:

• The surface is colorless or light-colored, and the black mark can be displayed by the corresponding wavelength infrared filter under the infrared camera.

Infrared transparent ink:

• The pattern or text printed with the ink is black, but it is colorless and transparent under the infrared camera, and the black ink can be camouflaged for symmetrical anti-counterfeiting; Or make a color block to block the pattern below, because it can not be transparent under the naked eye and visible light, only can be transparent under infrared rays, if you want to see the content under the color block, you must be under the infrared camera to see. At present, the ink has been widely used in foreign anti-counterfeiting technology.