Erasable information recording process using co-crystalline dye complexes
US4513071A · kind A · utility
11Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1983 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | Nov 21, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/0664
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A process for recording an erasable pattern which comprises selective deaggregation of an aggregate dye complex layer of a recording element. As a result, a color change occurs in the selected areas. In preferred embodiments, the pattern is produced by selectively exposing the layer to laser light. The pattern can be erased by exposing the layer to an appropriate solvent, or by heating the aggregate dye complex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.