Patent ID: 6143426
Filing Date: 2000-11-07
Classification: C09K,G11B,Y10S,Y10T

Abstract:
An optical recording medium comprising: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 recording material film formed on the second information surface of the second substrate, said recording material film for both recording and reproducing information; andan adhesive layer for adhering the first substrate and the second substrate,wherein information for only reproduction is formed on the first information surface of the first substrate in a form of convex and concave pits, the reading of the information formed on the first information surface of the first substrate or the recording of information onto the recording material film formed on the second information surface of the second substrate is performed using a light beam coming from a side of the first substrate.