0247737-A1 is referenced by 22 patents and cites 2 patents.

A thermal transfer printing sheet, suitable for use in a thermal transfer printing process, especially for the conversion of a digital image into a visible print, comprising a substrate having a coating comprising a dye of the formula: wherein Ring A is unsubstituted or carries, in the 2- or 4-position with respect to the azo link, at least one group selected from -CX3, X, CN, NO2, -OCO.Y, -CO.Y, -CO.H, -OSO2.Y and -SO2.Y, provided that A is substituted when Z is CH3 and R is C2-4-alkyl; X and X are each independently halogen; Y is selected from R, -OR, SR and -NRR; R is selected from C1-12-alkyl, C1-12-alkyl interrupted by one or two groups selected from -O-, -CO-, O.CO- and -CO.O-, C3-7-cycloalkyl, mono- or bi-cyclic aryl and C1-3-alkylene attached to an adjacent carbon atom on Ring A; R is selected from H, C1-12-alkyl, C3-7-cycloalkyl and mono- or bi-cyclic aryl; Z is C1-12-alkyl or phenyl; and R is selected from C2-12-alkyl unbranched in the alpha-position, C2-12-alkyl unbranched in alpha-position and interrupted by one or two groups selected from -O-,-CO-, O.CO- and -CO.O-, phenyl, C1-4-alkylphenyl, biphenyl and biphenyl interrupted by a group selected from -O-, -CO-, O.CO- and -CO.O-, each of which is free from hydrogen atoms capable of intermolecular hydrogen beonding.

Title
Thermal transfer printing.
Application Number
EP19870303831 19870429
Publication Number
0247737 (A1)
Application Date
April 29, 1987
Publication Date
December 2, 1987
Inventor
Bradbury Roy
Gregory Peter
Assignee
Ici
GB
IPC
B41M 05/26
B41M 05/26
D06P 05/00
B41M 05/39
B41M 05/388
B41M 05/385
B41M 05/26
D06P 05/00
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