Element, das Azofarbstoffe verwendet, für die Aufzeichnung optischer Informationen

摘要

There is disclosed a recordable optical element comprising improved light-stable dyes. The element has a transparent substrate and on the surface of the substrate, a dye containing recording layer and a light reflecting layer. The dye in the recording layer comprises a metal complex of a tridentate azo dye ligand containing, on one side of the azo linkage, an aminohydroxypyridine group and on the other side, an aromatic ring having an electron withdrawing substituent and a hydroxyl, carboxyl, or sulfonamido group.