Patent ID: 6280812
Filing Date: 2001-08-28
Classification: C09K,G11B,Y10S,Y10T

Abstract:
A reproduction apparatus for reproducing information stored on an optical recording medium comprising:a light source for illuminating an optical recording medium, the optical recording medium having at least one surface containing information stored thereon;a focusing means for focusing the light source on the at least one surface containing information thereon; anda detection means for detecting the information stored on the optical recording medium,wherein the optical recording medium comprises:a first substrate having a first information surface;a semitransparent reflection film formed on the first information surface of the first substrate;a second substrate having a second information surface;a reflection film formed on the second information surface of the second substrate; andan adhesive layer for adhering the first substrate and the second substrate so that the first information surface and the second information surface face each other,wherein the thickness of the first substrate is at least 0.56 mm, the thickness of the adhesive layer is at least 30 .mu.m, and the total thickness of the first substrate and the adhesive layer is in the range of 0.59 mm to 0.68 mm.