Patent ID: 6291047
Filing Date: 2001-09-18
Classification: B29C,B29D,B29L,G11B,Y10S,Y10T

Abstract:
An information recording medium, comprising:a substrate having opposing surfaces;recording layers, each being formed on one of said surfaces of said substrate, respectively;protective layers, each being formed directly on one of said recording layers, respectively; andlight incident surfaces, each constituting an outermost surface of the information recording medium,wherein the surfaces of said recording layers formed on the surfaces of said substrate are recording surfaces of said substrate;a distance between said recording surfaces of said substrate and said light incident surfaces formed over said recording surfaces is smaller than a thickness of said substrate; anda light beam to be irradiated on said light incident surfaces is designed to enter said protective layers, wherein recorded in formation is reproduced based on changes in the light intensity of the reflected light beam.