Triazene dyes for use in thermal transfer printing
AssigneeAgfa-Gevaert
InventorLuc Vanmaele
Life of this patent
Estimating the term…
Abstract
The present invention provides triazene dyes according to formula (I) for use in thermal transfer printing: A--N.dbd.N--NR.sup.1 R.sup.2 (I) wherein A is the residue of a diazotisable heteroaromatic amine, R.sup.1 and R.sup.2 independently represent hydrogen, an alkyl group, a substituted alkyl group, an alkenyl group, a substituted alkenyl group, an aryl group, a substituted aryl group, a cycloalkyl group, a substituted cycloalkyl group, an aralkyl group, or R.sup.1 and R.sup.2 represent the atoms necessary to complete a ring system or a substituted ring system.
Claims6
A method for making an image comprising image-wise heating a dye donor element comprising on a support a dye layer, said dye layer containing a dye according to formula (I):
- ##STR40## wherein A is the residue of a diazotisable heteroaromatic amine, R.sup.1 and R.sup.2 independently represent hydrogen, an alkyl group, a substituted alkyl group, an alkenyl group, a substituted alkenyl group, an aryl group, a substituted aryl group, a cycloalkyl group, a substituted cycloalkyl group, an aralkyl group, or R.sup.1 and R.sup.2 represent the atoms necessary to complete a ring system or a substituted ring system whilst in face to face relationship with an image receiving material.
Dependencies are inferred from the claim text.