Thermal transfer printing
US4977135A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 14, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Jul 14, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal transfer printing sheet suitable for use in a thermal transfer printing process, comprising a substrate having a coating comprising a binder and an anthraquinone of the Formula I: ##STR1## or a mixture of an anthraquinone dye of the Formula I and a disazo dye of Formula II: EQU A-N=N-B-N=N-E II wherein: PA0 Z is hydrogen or an optionally substituted aliphatic or an optionally substituted aryl radical; PA0 A is the residue of a diazotizable phenylamino or naphthylamine, A-NH.sub.2, carrying no more than one unsaturated electron-withdrawing group; PA0 B is an optionally substituted thiophen-2,5-ylene or thiazol-2,5-xylene; and PA0 E is the residue of an aromatic coupling component E-X wherein X is an atom or group displaceable by a diazotized aromatic amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.