Patent ID: 7943223
Filing Date: 2011-05-17
Classification: G11B,Y10T

Abstract:
1. An optical recording medium, comprising: a substrate; a first information layer provided on a laser beam incident surface side of the substrate; and at least one translucent information layer provided on the laser beam incident surface side being located farther away from the substrate than the first information layer, the translucent information layer being configured to include a recording film comprising a phase change material Sb the translucent information layer is configured to include a heat sink layer, a dielectric layer, an interface layer, the recording film, and a reflection layer which are formed in that order from the laser beam incident surface side, the recording film further comprises Te in an atomic ratio of a, provided that x+y+z+a=100 and 4≦a≦15 are satisfied, the dielectric layer is formed of a mixture of ZnS and SiO the interface layer is formed of a ZrO when a compositional ratio of the ZrO when a compositional ratio of ZrO