Type of thermal imaging medium and method of forming an image with it
US5720841A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1996 |
| Grant date | Feb 24, 1998 |
| Priority date | — |
| Expiry date | Sep 6, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A new type of positive working thermal imaging medium, and a process of forming an image with it is disclosed. This thermal imaging medium comprises a transparent support and (1) a layer comprising a homopolymer or copolymer comprising at least 60 mole % of monomer units containing covalently bound chlorine, (2) a layer containing a homopolymer or copolymer comprising at least 50 mole % of a vinyl acetal monomer unit, (3) an image forming layer, (4) a release layer, and (5) a thermoadhesive layer. After or before exposure to a heat pattern generated directly by a thermal head or indirectly by information-wise exposure to laser radiation a cover sheet is laminated to layer (5). After delamination a positive image is obtained on the original support.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.