Stock material or miscellaneous articles – Circular sheet or circular blank
Patent
1996-03-14
1997-11-18
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
056885741
ABSTRACT:
Disclosed is a phase-change optical recording medium which has a reflectance and a signal modulation conformed to the CD standard, and which is usable for recording at the same linear velocity as the reproducing velocity specified in the CD standard. The phase-change optical recording medium comprises a metallic layer, a first protective layer, a recording layer, a second protective layer, and a reflecting layer on a substrate, in which recording is performed through change from a crystalline state to an amorphous state in the recording layer. The recording layer comprises a recording material of a Ge--Te--Sb--Se system, and the recording layer has an average composition in a direction of thickness which satisfies the following relations as represented by atomic %:
REFERENCES:
patent: 5234737 (1993-08-01), Ueno et al.
patent: 5254382 (1993-10-01), Ueno et al.
patent: 5270149 (1993-12-01), Iselborn et al.
patent: 5315577 (1994-05-01), Kirino et al.
Proceesings of 5th Symposium of Phase-Change Recording Society, J. Tominaga et al, Dated: Nov. 25, 1993, pp. 5-8.
Proceesing of 5th Symposium of Phase-Change Recording Society, S. Maita et al, Dated: Nov. 25, 1993, pp. 9-14.
"A CD-compatible erasable disc". J. H. Coombs et al, 94/SPIE vol. 2338 Optical Data Sorage (1994), pp. 94-106.
Ikari Yoshihiro
Ota Norio
Taii Toshiaki
Tamura Reiji
Evans Elizabeth
Hitachi Maxell Ltd.
Ryan Patrick
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