Metallic ink jet printing system for graphics applications

C - Chemistry – Metallurgy – 09 – D

Patent

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C09D 11/00 (2006.01) B41J 2/21 (2006.01)

Patent

CA 2622214

A multi-phase system for creating a metallic effect on a substrate (10), comprising applying to the substrate a first ink jet ink (12) comprising a dispersion of reflective metallic particles in a suitable carrier system, to form a reflective coating layer; and applying a second ink jet ink (14) over the reflective coating layer to form a protective coating layer. Optionally, an undercoat layer (16, 18) is printed on the substrate prior to applying the first ink jet ink. The second ink jet comprises at least one crosslinkable polymer or is otherwise energy curable. The second ink jet ink optionally imparts a color to the metallic image.

L'invention porte sur un système multiphase permettant de créer un effet métallique sur un substrat, ce système permettant d'appliquer, par jet, sur le substrat une première encre comprenant une dispersion de particules métalliques réfléchissantes dans un système de transport approprié de façon à former une couche de revêtement réfléchissante; et appliquer, par jet, une seconde encre sur la couche de revêtement réfléchissante de façon à former une couche de revêtement de protection. Eventuellement, une sous-couche est imprimée sur le substrat avant l'application de la première encre. Le second jet d'encre comprend au moins un polymère réticulable ou, du moins, durcissable par apport d'énergie. La seconde encre confère éventuellement une couleur à l'image métallique.

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