Optical information recording member comprising Au, TeO.sub.2 and Te
US4587209A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1985 |
| Grant date | May 6, 1986 |
| Priority date | — |
| Expiry date | Mar 25, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/165
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an optical information recording member which permits recording of optical information at a high speed and high density by means of energy of light or heat, as well as a high speed reproduction of the recorded information. The optical information recording member has a thin film formed on a substrate which thin film is made of TeOx constituted by a mixture of Te and TeO.sub.2 with a small amount of Au being added such that the contents of Te, O and Au in the thin film falls within a predetermined region limited in terms of atomic percent. The optical information recording member of the invention having the thin film of Te-O-Au system permits the information to be recorded in quite a short time thus allowing quite high speed of recording and reproduction as compared with the conventional recording film of TeOx system. The optical information recording member of the invention also brings about a higher recording sensitivity and a higher C/N ratio. Further, the optical information recording member may have a thermal diffusion layer of a metal having a higher heat conductivity than the thin film, formed on at least one side of the recording thin film, thereby making unifor…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.