THERMALLY-TRANSFERABLE FLUORESCENT 7-AMINOCOUMARINS

THERMALLY-TRANSFERABLE FLUORESCENT 7-AMINOCOUMARINS

A donor element for thermal transfer comprising a support having on one side thereof a fluorescent 7-aminocoumarin compound dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant. In a preferred embodiment, the compound has the formula: wherein: each X...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BYERS, GARY WAYNE, CHAPMAN, DEREK DAVID
Format: Patent
Sprache:eng
Schlagworte:
COLOUR PRINTING
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES
STAMPS
TRANSPORTING
TYPEWRITERS
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Beschreibung
Zusammenfassung:A donor element for thermal transfer comprising a support having on one side thereof a fluorescent 7-aminocoumarin compound dispersed in a polymeric binder, and on the other side thereof a slipping layer comprising a lubricant. In a preferred embodiment, the compound has the formula: wherein: each X and Y independently represents hydrogen; a substituted or unsubstituted alkyl or acyl group having from 1 to 10 carbon atoms; a substituted or unsubstituted aryl group having from 6 to 10 carbon atoms; or the atoms necessary to complete, along with the nitrogen to which it is attached, a 5- or 6-membered heterocyclic ring.