Thermal imaging method

Radiation imagery chemistry: process – composition – or product th – Use of sound or nondigital compressive force

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430 22, 430200, 430201, 430964, 503227, G03C 554

Patent

active

053806077

ABSTRACT:
A thermal imaging process comprising the step of imagewise heating a donor element so as to transfer therefrom colored matter onto a contacting receptor element, characterized in that before said imagewise heating said receptor element contains in a layer at least one substance that by heat applied in the transfer of said colored matter undergoes a change giving rise to an increase in optical density.

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