Optisches Aufzeichnungsmedium, und dieses benutzende Aufzeichnungs- und/oder Reproduktions-Methode

摘要

An optical recording medium has a substrate and a recording layer which is formed on the substrate and contains an azo metal chelate compound including an azo moiety of formula (I) and a bivalent or trivalent metal: wherein X is OH group, COOH group or CONH2 group; Y is a residual group forming a heterocyclic ring in combination with nitrogen atoms bonded thereto; and Z is a residual group forming an aromatic ring in combination with carbon atoms bonded thereto. In addition, there is provided a method of recording information and reproducing the information using the above-mentioned optical recording medium.