squarylium color substances as light-absorbing compound in the information layer of optical data carriers

摘要

New squarylium compounds for optical data carrier, on the latter, a preferably transparent substrate, comprising on the surface of which a with light writable information layer, optionally one or more reflection layers and a further substrate or a protective layer are applied with a red light, preferably laser light, and can be read, wherein the information layer a light-absorbing compound and optionally a binder, characterized in that the light-absorbing connection of at least said squarylium compound is used.