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US 5,691,098 AGranted
Laser-Induced mass transfer imaging materials utilizing diazo compounds
AssigneeMinnesota Mining and Manufacturing Company
InventorsStanley C. Busman, Gregory D. Cuny, Krzysztof A. Zaklika, Richard J. Ellis
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Abstract
The invention relates to a method of increasing the sensitivity of laser induced thermal imaging by using certain diazo compounds. The diazo compounds contain functional groups adjacent the diazo substituent capable of stabilizing these compounds. The invention is useful in the field of thermal transfer imaging for the production of various graphic arts media.
Claims17
A thermal transfer donor element comprising a substrate having coated on at least a portion thereof, in one or more layers:
- (a) a compound having a diazo substituent and at least one electron withdrawing functional group adjacent the diazo substituent;
- (b) a nondiazo radiation absorber;
- and
- (c) a thermal mass transfer material;
- wherein the diazo compound has a decomposition temperature of no greater than about 250.degree. C.
2 more elements
Dependencies are inferred from the claim text.