Patent ID: 6475588
Filing Date: 2002-11-05
Classification: G11B,Y10T

Abstract:
An optical disk, comprising:a first fully reflective data layer, a first separating layer disposed on a top side of the first fully reflective data layer, a first semi-reflective data layer disposed on a side of the separating layer opposite the first fully reflective data layer, a first resin layer disposed on an upper side the first semi-reflective data layer opposite the separating layer, and a second resin layer disposed on a bottom side of said first fully reflective data layer; wherein the first resin layer has light transmission at a desired reading wavelength of greater than 60%; wherein a reflectivity of the first fully reflective data layer and the first semi-reflective data layer is individually about 18 to about 30%; wherein a difference in the reflectivity between the first fully reflective data layer and the first semi-reflective data layer is less than about 5%; and wherein at least a portion of the optical disk is colored.