Method of forming images and materials therefor

Details Method of forming images and materials therefor Method of forming images and materials therefor

B - Operations, Transporting

41

M

42/5

B41M 5/36 (2006.01) B41M 5/34 (2006.01) G03C 1/494 (2006.01)

Patent

CA 2029588

METHOD OF FORMING IMAGES AND MATERIALS THEREFOR Abstract An aggregated-Group Ib metal colloid is prepared, which may be used to form stable color- differentiated images, by the selective application of thermal energy thereto. The metal aggregates, when exposed to thermal energy, revert either to the unaggregated metal or to an aggregate of lesser dimension. This change induces a color change in the material, which is clearly visible against those areas not so exposed. The metal aggregates, when dispersed in a polymeric matrix, are stable in the absence of heat.

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