Electrically biased optical storage medium
US4509145A · kind A · utility
2Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1982 |
| Grant date | Apr 2, 1985 |
| Priority date | — |
| Expiry date | Jun 18, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/2531
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The use of a photoconducting material having specific characteristics in conjunction with a heat sensitive optical recording medium also having specific characteristics yields desirable properties. Specifically, through the use of this combination an optical recording medium that has a relatively low applied power threshold for writing and yet a relatively long-term stability is obtained. The photoconductor material should have an unilluminated resistivity of at least 10.sup.6 Ohm-cm and should undergo a resistivity descrease of at least 10.sup.5 upon illumination to yield this desired attribute.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.