Optical recording medium

Details Optical recording medium Optical recording medium

1997-08-08

1999-11-02

Evans, Elizabeth

Stock material or miscellaneous articles

Circular sheet or circular blank

428 644, 428 647, 428457, 428913, 43027012, 4304951, 430945, 3692751, 369283, 369288, B23B 300

Patent

active

059766573

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 (.theta.) of the slanted side of the pregrooves is 30.about.90.degree. and the buffering layer has 10.about.50,00O Pa.S melt-viscosity at 140.degree. 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.

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