Optical information recording medium and method of recording and/or reproducing therein
AssigneeSony Corporation
InventorsManami Miyawaki, Yuji Kuroda
Life of this patent
Estimating the term…
Abstract
An optical information recording medium 1 is constructed by sequentially layering a reflective layer 11, a protective layer 12, a recording layer 13, a protective layer 14, and a light transmissive protective layer 15 on a substrate 10. As the recording layer 13, a recording layer containing ZnS, SiO2, and Sb as principal components, or preferably, a recording layer expressed by a compositional formula [(ZnS)x(SiO2)1-x]y(SbzX1-z)1-y (where 0<x≦1.0, 0.3≦y≦0.7, and 0.8<z≦1.0 are met and X denotes at least one element selected from a group of Ga, Te, V, Si, Zn, Ta, and Tb) is adopted.
Claims14
An optical information recording medium comprising:
- a recording layer consisting of a composition that satisfies the following formula (1):
- [(ZnS)x(SiO2)1-x]y(SbzX1-z)1-y (1), where
- 0<x<1.0, 0.3≦y≦0.7, and 0.8<z<1.0 are met, and
- X denotes at least one element selected from the group of Ga, V, Si, Zn, Ta, and Tb.
A recording and/or reproducing method for an optical information recording medium, which includes a recording layer, the method comprising:
- causing laser light whose wavelength is equal to or larger than 385 nm and equal to or smaller than 415 nm to enter the recording layer to perform recording and/or reproducing, wherein
- the recording layer consists of a composition which satisfies the following formula (1):
- [(ZnS)x(SiO2)1-x]y(SbzX1-z)1-y (1), where
- 0<x<1.0, 0.3≦y≦0.7, and 0.8<z<1.0 are met, and
- X denotes at least one element selected from the group of Ga, V, Si, Zn, Ta, and Tb.
Dependencies are inferred from the claim text.