Thermal imaging material and preparation

Details Thermal imaging material and preparation Thermal imaging material and preparation

B - Operations, Transporting

41

M

B41M 5/26 (2006.01) B41M 5/32 (2006.01) B41M 5/333 (2006.01) B41M 5/40 (2006.01) G03C 1/498 (2006.01)

Patent

CA 2153500

A multilayer heat-sensitive material for thermal imaging and preparation thereof are described (10). The material comprises a color- forming layer (18) containing a color-forming amount of a finely divided, solid, colorless noble metal or iron salt of an organic acid; a color-developing amount of cyclic or aromatic organic reducing agent, which at thermal copy and printing temperature is capable of a color-forming reaction with the metal salt; an image toning agent; and a carrier composition in which the noble metal or iron salt, organic reducing agent, and toning agent are distributed. The carrier composition comprises a substantially water-soluble polymeric carrier and a dispersing agent. The material also comprises a protective, clarifying, overcoating layer (22).

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