An information signal recording medium comprises a core material made of a non-conductive material, and a surface material made of a conductive material and in close adherence with at least one surface of the core material. Variations in geometrical configuration in accordance with information signals to be recorded on the recording medium are compression molded on the surface material. The materials constituting the surface material and the core material are selected so that a ratio VC/VN between a melt viscosity VC of the surface material and a melt viscosity VN of the core material at a temperature and a shear rate at the time of the compression molding is less than or approximately equal to 1.6.
