Process for displaying optically readable information
US4722595A · kind A · utility
31Cited by
11References
80Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 4, 1985 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | Oct 4, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/26
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process for recording, storing and displaying optically readable information on a support using a polymer mixture P as the information carrier, wherein P comprises at least two different, mutually compatible polymers P.sub.1 and P.sub.2, and has a lower critical solution temperature (LCST), the optically differentiable modification of the information carrier being brought about by phase transition from a compatible polymer mixture below the LCST to demixed polymers P.sub.1 and P.sub.2 above the LCST or the reverse of this transition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.