The present invention provides a security element which is low in cost, is difficult to forge or alter, and can be applied to objects where a high level of security is required. The security element comprises at least a substrate and a fluorescent colorant layer provided on the substrate, wherein the fluorescent colorant layer comprises N species of fluorescent colorants Fn, wherein N is an integer of 2 or more and n is an integer of not less than one and not more than N, in the same layer, and the fluorescent colorant Fn absorbs light with a wavelength of n and emits fluorescence with a wavelength of n+1.

 
Web www.patentalert.com

< Method of improving airline luggage inspection

< Ink-receptive card substrate

> Security element

> Duplex carton label/packing list

~ 00257