Printing medium comprised of porous medium

Details Printing medium comprised of porous medium Printing medium comprised of porous medium

B - Operations, Transporting

41

M

B41M 5/00 (2006.01) B41M 5/52 (2006.01)

Patent

CA 2305526

Provided is a printing medium particularly for ink jet printing. The printing medium is comprised of a substrate and a coating layer. The coating layer comprises porous particles (1), a resin binder and colloidal particles (3), with the colloidal particles (3) being of a size that is greater than the size of the pores (2) of the porous particles (1), but smaller than the interstitial pores (4) created by the porous particles (1). The printing medium allows one to realize high optical density and high image resolution, while also offering good mechanical properties, fast drying, good waterfastness, and consistent performance in different environments.

L'invention porte sur un milieu d'impression utilisé notamment dans l'impression à jet d'encre. Ce milieu d'impression comprend un substrat et une couche de revêtement. La couche de revêtement comprend des particules (1) poreuses, un liant de résine et des particules colloïdales, la dimension des particules colloïdales étant supérieure à celle des pores (2) des particules poreuses (1), mais inférieure aux pores interstitiels (4) formés par les particules poreuses (1). Le milieu d'impression permet avant tout d'obtenir une haute densité optique et une image de haute résolution, et présente de bonnes propriétés mécaniques, un séchage rapide, une bonne résistance à l'eau et une performance constante dans différents environnements.

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