Process for making and detecting anti-counterfeit paper

A method of producing a radiation light source detectable, anti-counterfeit paper, wherein said method is comprised of the steps of:

• dissolving a soluble fluorescent dye in a solvent;
• dewatering wood fibers having lumens to a solids content of up to 50% solids;
• mixing said dissolved fluorescent dye with said dewatered wood fibers such that said fluorescent dye is loaded into said lumens of said fibers;
• cleaning said loaded wood fibers to substantially remove any excess fluorescent dye located on the outside of said wood fiber lumens;
• sealing said fluorescent dye substantially inside said lumens of said wood fibers;
• removing said fluorescent dye loaded wood fibers;
• drying said loaded wood fibers;
• incorporating said cleaned, lumen loaded wood fibers into a papermaking pulp furnish at a concentration of Z.sub.2 of said total furnish, where Z.sub.2 (ppm)=concentration of lumen loaded fibers in furnish= ##EQU3## where Z.sub.1 =amount of lumen loaded fibers in furnish in lbs/ton of fiber wherein said cleaned, lumen loaded wood fibers are incorporated into said furnish at a concentration of between at least one parts per billion up to 25%;
• forming said lumen loaded furnish into an anti-counterfeit paper;
• and
• wherein said fluorescent dye in said lumen loaded fibers can be detected by employing a radiation light source.