Development of laser marking fiber and micro-marking

Abstract

The micro-printing technology which cannot be read with the naked eyes is used as one of the imitation preventive measures. We previously developed the laser marking fiber by kneading the coloring pigments to polyester resin. Using this fiber, the irradiation conditions of YAG laser were examined and the best marking condition was found. It was expected the laser marking fiber which was marked original products information was used effectively to prevent imitation.