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US6162761A Green dye mixture for thermal color proofing 失效
绿色染料混合物用于热色印

Green dye mixture for thermal color proofing
摘要:
A process for making a green color proof of a printed color image comprising:a) generating a set of electrical signals which is representative of the shape and color scale of an original green image;b) contacting a green dye-donor element comprising a support having thereon a dye layer and an infrared-absorbing material with an intermediate dye-receiving element comprising a support having thereon a polymeric, dye image-receiving layer;c) using the signals to imagewise-heat the dye-donor element, thereby transferring a dye image to the intermediate dye-receiving element; andd) retransferring the dye image to a final dye image-receiving element which has the same substrate as the printed color image;wherein the green dye-donor element comprises a support having thereon a dye layer comprising a mixture of a yellow dye and a cyan dye dispersed in a polymeric binder, the yellow dye having the formula A: ##STR1## the cyan dye has either the following formula B or C wherein the formula B has the structure: ##STR2## and the formula C has the structure: ##STR3##
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