Patent ID: 6296915
Filing Date: 2001-10-02
Classification: G11B,Y10S,Y10T

Abstract:
An optical recording medium comprising:a first interference layer having a first surface to which light is applied and a second surface opposite to said first surface;a recording layer provided on said second surface of said first interference layer and changeable between crystalline and amorphous states when the light is irradiated;a second interference layer provided on said recording layer; anda reflection layer overlying said second interference layer, said first interference layer being made by stacking at least two kinds of layers made of different materials which are different dielectric constant, the heat conductivity of one of said at least two kinds of layers, which is the closest to said recording layer, being lower than the heat conductivity of the other of said at least two kinds of layers andthe mean heat conductivity of said second interference layer being higher than the mean heat conductivity of said first interference layer.