Recording with polymer liquid crystal recording medium
US4965591A · kind A · utility
35Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1988 |
| Grant date | Oct 23, 1990 |
| Priority date | — |
| Expiry date | Sep 7, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/2585
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording medium having a recording layer comprising a polymer liquid crystal is used for multivalue recording by using at least two different liquid crystal phases at least two levels of locally different liquid crystal proportion, or thicknesswise difference in an optical variable, such as transmittance a reflectance, generally through controlled heating and cooling. In effecting the recording, two heating sources may suitably be used, one for imagewise heating and the other for supplemental heating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.