Information recording medium and recording method using the same

Details Information recording medium and recording method using the same Information recording medium and recording method using the same

1994-03-16

1995-07-11

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428203, 428209, 4284111, 428689, 428697, 428913, 369283, 369288, 3461351, 347264, B32B 302

Patent

active

054319781

ABSTRACT:
According to this invention, there is provided an information recording medium including a substrate, a metal layer formed on the substrate, and a recording layer formed on the metal layer and being formed a recorded portion and a non-recorded portion by changing optical characteristics by radiating a recording light beam, wherein the recording layer contains GeSbTe, a reflectance of the recorded portion of the recording layer is higher than that of the non-recorded portion, and a reflectance of the non-recorded portion is not less than 10%. Focusing and tracking operations can be stably performed.

REFERENCES:
patent: 4305081 (1981-12-01), Spong
patent: 4499178 (1985-02-01), Wada et al.
patent: 4673626 (1987-06-01), Takeda et al.
patent: 5100700 (1992-03-01), Ide et al.
patent: 5206114 (1993-04-01), Kobayashi
patent: 5249175 (1993-09-01), Akahira et al.

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