Anti-Stokes pigments are used in high-security printing applications to create invisible inks and watermarks that can only be seen under infrared light. This makes them ideal for protecting against counterfeiting and fraud.
For example, anti-Stokes pigments can be used to create a watermark on a passport that can only be seen under infrared light. This makes it very difficult for counterfeiters to forge passports, as they would need to have access to specialized equipment to see the watermark.
Anti-Stokes pigments can also be used to create invisible inks for security labels. These labels can be placed on products to prove their authenticity. For example, a security label on a bottle of wine could contain anti-Stokes pigments. If the bottle is counterfeit, the label will not appear under infrared light.
Anti-Stokes pigments are also being used to develop new types of security features, such as invisible threads and holographic images. These features can be used to protect a wide range of documents and products, including passports, currency, and consumer goods.
Here are some specific examples of how anti-Stokes pigments are used in high-security printing applications:
• The Austrian State Printing Office (OeSD) uses anti-Stokes pigments to create a security feature in its passports. The security feature is a watermark that can only be seen under infrared light.
• The US Bureau of Engraving and Printing is investigating the use of anti-Stokes pigments in US currency. The goal is to create a new security feature that will make it more difficult to counterfeit US currency.
• A number of companies are developing security labels that use anti-Stokes pigments. These labels can be placed on a wide range of products, including pharmaceuticals, electronics, and luxury goods.
Anti-Stokes pigments are a promising new technology for high-security printing applications. They offer a number of advantages over traditional security features, such as watermarks and holograms. Anti-Stokes pigments are more difficult to counterfeit and can be used to create a wider range of security features.
