An ablative recording medium comprises a substrate coated with a light reflecting layer which in turn is coated with a light absorptive layer of di-indeno[1,2,3-cd:1',2',3'-lm]perylene. During recording, portions of the light absorptive layer are ablated by a modulated focussed light beam, thereby exposing...http://www.google.es/patents/US4242689?utm_source=gb-gplus-sharePatente US4242689 - Ablative optical recording medium
