Patent ID: 7012878

Claim:
An optical recording medium comprising: a cover substrate; a first recording layer structure; an intermediate layer; a separation layer; a second recording layer structure; and a grooved substrate, wherein the cover substrate, the first recording layer structure, the intermediate layer, the separation layer, the second recording layer structure and the grooved substrate are disposed in this order, a laser beam is irradiated from a direction of the cover substrate, the first recording layer structure includes, in this order, a first protective layer, a first recording layer which comprises Sb and Te as main components thereof, a second protective layer, a first inorganic layer which comprises metal as components thereof, the second recording layer structure includes, in this order, a third protective layer, a second recording layer which comprises Sb and Te as main components thereof, a fourth protective layer, a second inorganic layer which comprises metal as a component thereof, and a ratio (t/T 1 ) of a thickness (T 1 ) of the first recording layer structure and a thickness (t) of the intermediate layer is 0.2 to 1.0.