Rewritable Marking Media Using Leuco Compound

Abstract

We have developed a new themal rewritable marking medium which is formed three component materials, i.e. a color former (leuco dye), a developer (phenol compound), and a reversible matrix (steroid). The medium was colorless in adisordered state and colored in an ordered state. From analysises and simulations, it is thought that the coloring process is related to the glass transition and the molecular diffusion.