Thermal transfer printing
US5196392A · kind A · utility
1Cited by
0References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | Jul 26, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/914
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A thermal transfer printing sheet comprising a substrate having a coating of a polycyclic dye, selected from dioxodibenzofuran, dioxofuranindole and dioxobenzodipyrrole. The polycyclic dye carries pendant phenyl groups which themselves carry a variety of open-chain, cyclic and heterocyclic substituent groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.