Optical variable ink is one kind of special security ink which will change color with different viewing angle.
Uv ink is a special printing one giving off visible light (400-800nm) while exposed to ultraviolet light (200-400nm).
This means that, we could see the color, for the bar code reader it is transparent and will not be able to read.
Under the sun, we observation can see a clear pattern of the watermark,widely used in the printing documents.
PingWei Anti-forgery Ink Limited We produce a wide range of security inks such as UV ink , IR ink, Magnetic ink, Anti-forgery Ink，invisible ink，Temperature ink，sensitive ink，Chemical Ink，Infrared ink，Printing Ink，pad printing ink，screen printing ink，Heat Transfer ink，Sublimation ink，rubber ink These inks are manufactured for Intaglio, Silkscreen, Rotogravure, Flexographic, Letterpress and Offset printing methods. Please Email:info@anti-forgeryink.com for more details、samples and prices on these inks
PingWei Anti-forgery Ink Limited Security Inks are used to invisibly mark surfaces by using a wide range of technologies and printing processes. These Security Inks are used in all sizes of trade mark and by governments as an anti-counterfeiting and fraud prevention device. In the world we live in today, counterfeiting is a fast growing problem, which is measured in billions of dollars of lost revenue annually. .
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