Use of reactive dye in a thermal transfer printing process

Details Use of reactive dye in a thermal transfer printing process Use of reactive dye in a thermal transfer printing process

B - Operations, Transporting

41

M

B41M 5/26 (2006.01) B41M 5/382 (2006.01)

Patent

CA 2375306

A formulation and method of printing an ink or meltable ink layer having reactive dyes or mixtures of reactive dyes and disperse dyes as colorants. The ink or ink melt layer also includes an alkaline substance, a binder, and optionally, a heat-activated printing additive. Permanently bonded color images are provided by the reaction between the reactive dye and the final substrate, which may be any cellulosic, protein, or polyamide fiber material, or mixtures with polyester. Reaction occurs upon heat activation of the printed ink image.

L'invention concerne une formulation et un procédé d'impression d'une couche d'encre ou d'encre fusible ayant des colorants réactifs ou des mélanges de colorants réactifs en tant que colorants. La couche d'encre ou d'encre fusible comprend également une matière alcaline, un liant et, facultativement, un additif d'impression thermosensible. Des images couleur collées à demeure sont produites par la réaction entre le colorant réactif et le substrat final, qui peut être cellulosique, protéique ou en fibre polyamide ou des mélanges avec du polyester. La réaction survient par activation thermique de l'image imprimée à l'encre.

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