Reactive ink printing process

B - Operations – Transporting – 41 – M

Patent

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Details

B41M 5/26 (2006.01) B41M 5/025 (2006.01) B41M 7/00 (2006.01) B44C 1/17 (2006.01) C09D 11/02 (2006.01) D06P 1/52 (2006.01) D06P 5/00 (2006.01) D06P 5/20 (2006.01) D06P 5/24 (2006.01) D06Q 1/10 (2006.01) D06Q 1/12 (2006.01) D06P 1/38 (2006.01)

Patent

CA 2331770

A method of printing an ink or meltable ink layer which comprises dyes or pigments or other colorants. The ink or ink melt layer comprises compounds with functional groups capable of reacting with active hydrogen, and compounds with functional groups containing active hydrogen, or functional groups capable of conversion to active hydrogen containing groups. An image is printed (6) onto a substrate (9), at a relatively low temperature, so that the ink is not activated during the process of printing (6) on the medium (9). The image is subsequently transferred or permanently fixed on the final substrate (8) by the application of heat and pressure (10), which activates the ink, and bonds the colorant to the final substrate (8). The reactive compounds may be blocked with blocking agents which are removed by the application of heat or other energy during activation of the ink.

L'invention concerne un procédé d'impression d'une couche d'encre ou d'encre fusible, contenant des colorants, des pigments ou d'autres produits de coloration. La couche d'encre ou d'encre fusible comprend des composés contenant des groupes fonctionnels capables de réagir avec de l'hydrogène actif, et des composés comprenant des groupes fonctionnels qui contiennent de l'hydrogène actif, ou des groupes fonctionnels capables de se convertir en groupes contenant de l'hydrogène actif. On imprime (6) une image sur un substrat (9) à une température relativement basse de manière que l'encre n'est pas activée pendant le processus d'impression (6) sur le support (9). L'image est ensuite transférée ou fixée de manière permanente sur le substrat (8) final par l'application de chaleur et d'une pression (10) ce qui a pour effet d'activer l'encre et de lier le colorant au substrat (8) final. Les composés réactifs peuvent être bloqués par des agents de blocage qui sont éliminés par application de chaleur ou d'une autre énergie pendant l'activation de l'encre.

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