Stock material or miscellaneous articles – Circular sheet or circular blank
Patent
1995-09-15
1997-07-29
Ryan, Patrick
Stock material or miscellaneous articles
Circular sheet or circular blank
428 642, 428 644, 428 645, 428 646, 428457, 428913, 43027012, 43027013, 4304951, 430945, 369283, 369288, B32B 300
Patent
active
056520360
ABSTRACT:
An information recording medium comprising a substrate, a phase-change type recording layer and capable of storing information therein through a phase-change of a portion thereof upon being irradiated by light beam, a first dielectric protecting layer interposed between the substrate and the recording layer, a second dielectric protecting layer formed on the recording layer, a first light-absorptive protecting layer comprising a dielectric material and at least one material selected from metals, semimetals and semiconductor materials and interposed between the recording layer and the first dielectric protecting layer, and a second light-absorptive protecting layer comprising a dielectric material and at least one material selected from metals, semimetals and semiconductor materials and interposed between the recording layer and the second dielectric protecting layer.
REFERENCES:
patent: 5314734 (1994-05-01), Nishida et al.
"Material for a Reversible or Reloadable Optical Disk", H. Okuda, issued by Kogyo Chosakai, May 20, 1989 pp. 60-63.
Evans Elizabeth
Kabushiki Kaisha Toshiba
Ryan Patrick
LandOfFree
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