| abstract |
In the optical recording medium including a substrate having pregrooves, and a metal recording layer, a buffering layer, a reflecting layer and a protecting layer which are sequentially stacked on the substrate, an angle (θ) of the slanted side of the pregrooves is 30˜90° and the buffering layer has 10˜50,00O Pa.S melt-viscosity at 140° C. Therefore, the optical recording medium can be compatible with a CD and playable by a DVDP, and manufactured at low costs without using a dye, while providing a high reflectivity at longer wavelength than 600 nm. |