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US Patent 11833849 Security ink based security feature

Patent 11833849 was granted and assigned to VIAVI Solutions on December, 2023 by the United States Patent and Trademark Office.

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Patent abstract

A security article may include a substrate. The security article may include a layer of security ink. The layer of security ink may include a set of color-shifting interference particles. The security article may include a layer of magnetic color-shifting ink. The layer of magnetic color-shifting ink may include a set of magnetically aligned magnetic particles. A color-shifting property of the layer of security ink and a color-shifting property of the layer of magnetic color-shifting ink may have a threshold level of similarity to create a color matching effect.

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