Reinforced bubble recording medium and information record
US4408213A · kind A · utility
10Cited by
7References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 30, 1981 |
| Grant date | Oct 4, 1983 |
| Priority date | — |
| Expiry date | Oct 30, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is an improved optical recording medium and information record where information is recorded in the form of one or more bubbles in a light absorptive layer and a reinforcement layer which preferentially adheres to a light absorptive layer during the formation of the bubble. The reinforcement layer provides a path for heat to diffuse away from the bubble, thereby desensitizing the recording process and increasing the range of incident light powers over which a bubble is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.