Optical disk and method of manufacturing optical disk
US5904819A · kind A · utility
1Cited by
5References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1996 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Jul 30, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disk can provide a sufficiently wide power margin for a recording power even when the optical disk has a high-recording density. The optical disk has a transparent substrate on which a recording layer in which information can be rewritten by at least irradiation of laser beam, a dielectric layer and a thermal conduction control layer are sequentially deposited. The thermal conduction control layer comprises a first low thermal conductivity layer, a first high thermal conductivity layer, a second low thermal conductivity layer and a second high thermal conductivity layer sequentially deposited thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.