Information recording medium and recording method using the same
US5431978A · kind A · utility
22Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1994 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Mar 16, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31504
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.