Thermal imaging methods and materials

Details Thermal imaging methods and materials Thermal imaging methods and materials

1993-04-12

1994-09-27

Raymond, Richard L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

558414, 564157, 564165, 564168, C07C22926, C07C23720

Patent

active

053508700

ABSTRACT:
Leuco dyes are provided which comprise the coupling product of a N-acyl substituted aromatic amino color developer and a dye-forming coupler moiety substituted at the coupling carbon with a thermally removable leaving group. Thermal imaging systems employing these leuco dyes have the advantage of reduced bubble formation relative to thermal imaging systems employing prior art leuco dyes containing a group which thermally fragments into one or more gases.

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