(57) A dye-donor element for laser-induced thermal dye transfer comprising a support having
thereon a dye layer and an infrared-absorbing material, characterized in that the
infrared-absorbing material is a cyanine dye having the following formula:
wherein:
R¹ and R² each independently represents a substituted or unsubstituted alkyl group;
R³, R⁴, and R⁵ each independently represents hydrogen or a substituted or unsubstituted
alkyl group; or R³ and R⁴ may be joined together, directly or through one or more
methyne or methylene groups to complete a substituted or unsubstituted cyclic ring
of 5 to 9 members;
Z¹ and Z² each independently represents hydrogen or the atoms necessary to complete
a unsubstituted or substituted benzene or naphthalene ring;
Y¹ and Y² each independently represents a dialkyl substituted carbon atom, a vinylene
group, an oxygen atom, a sulphur atom, a selenium atom, or a nitrogen atom with an
R¹ or a substituted or unsubstituted aryl group attached;
J represents hydrogen; a substituted or unsubstituted alkyl group; a substituted or
unsubstituted aryl group; a halogen atom; or a nitrogen atom substituted with an alkyl
or aryl group, or the atoms necessary to complete a 5- or 6-membered heterocyclic
ring;
n is 0 or 1; and
X is a monovalent anion.
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