Thermally-transferable polyester image-protecting layer
US7026092B1 · kind B1 · utility
2Cited by
7References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2000 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Dec 5, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal transfer medium for use in mass transfer printing comprises a substrate bearing on at least part of one surface thereof a coating of an overlay material comprising polyester having a glass transition greater than 50° C. (preferably at least 75° C.) and a molecular weight in the range 6,000 to 10,000. The overlay material combines good transfer characteristics, barrier properties and durability and is highly transparent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.