Patent ID: 10272712

Abstract:
A plastic card includes a multi-layer card body into which is integrated a window-type security feature. The card body includes a core layer that is laminated between top and bottom opaque print layers. The security feature includes a transparent insert incorporated into the core layer that serves as a light-transmissive card window. Overt and covert print elements are printed onto the top and bottom surfaces, respectively, of top print layer in alignment with the clear insert, with only the overt print element visible in natural light. By contrast, covert print element is only viewable by illuminating the partially light-transmissive top print layer through the insert. Preferably, the overt and covert print elements are tightly nested design elements that render the resulting harmonized image more difficult to replicate by unscrupulous individuals. Additionally, the insert is preferably dosed with a UV brightener to provide a forensic-level of security to the plastic card.