Method for recording optical information in optical high density recording mediums
US4845021A · kind A · utility
26Cited by
9References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 14, 1988 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | Jan 14, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/163
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical recording medium which comprises a substrate and a recording layer of at least two J-aggregates of dyes formed on the substrate is described. The dyes may be photochromic dyes or other types of dyes capable of forming the aggregates which have narrower absorption spectral ranges than original dyes. A plurality of information bits can be written in the recording layer by irradiation of one laser beam spot. The recording layer is formed by an LB film method or a method capable of fluidizing a dye solution in a direction horizontal to the substrate surface. A recording method using the medium is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.