Thermal transfer sheet
US6235445A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1999 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | Apr 14, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31721
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a thermal transfer sheet comprising a substrate, and a light-to-heat conversion layer containing a substance capable of converting light to heat and a binder, and an image forming layer, which are disposed on the substrate, wherein the binder in the light-to-heat conversion layer is a polyimide resin soluble in an organic solvent. In the thermal transfer sheet provided by the present invention, the light-to-heat conversion layer is not affected by the coating liquid disposed as a layer on the light-to-heat conversion layer. Further, the light-to-heat conversion layer thus formed exhibits high heat resistance and humidity resistance. Accordingly, the thermal transfer sheet of the present invention produces good images with little or no fogging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.