SOLID MARKING COMPOSITION AS WRITING MEANS, A WRITING INSTRUMENT, AN OPTICALLY VARIABLE MARKING LAYER AND USE OF A PLURALITY OF OPTICALLY VARIABLE PIGMENTS

摘要

The present invention relates to a solid marking composition as writing means in a writing instrument. The solid marking composition comprises a solid matrix containing at least one type of optically variable interference pigment flakes. The solid marking composition provides a document or article with a copy and counterfeit protection feature, and is preferably used in a writing instrument for applying hand-written anti-counterfeit markings and signatures.