Thermal and mechanical barrier layers for optical recording elements
US4340655A · kind A · utility
24Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1980 |
| Grant date | Jul 20, 1982 |
| Priority date | — |
| Expiry date | Jun 18, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/162
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Improved thermal and mechanical barrier layers coated on the recording layer of an optical recording element are disclosed. The improved layers comprise water-soluble polymers having a glass transition temperature when dry of at least 100.degree. C. and preferably at least 150.degree. C. These barrier layers are easily coated and do not significantly degrade the performance of the element. Optional layers such as spacer layers and topcoat layers coated on the barrier layers are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.