Special paper

B - Operations – Transporting – 41 – M

Patent

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Details

B41M 5/00 (2006.01) B41M 5/52 (2006.01) B41M 7/00 (2006.01) D21H 19/36 (2006.01) D21H 19/42 (2006.01) B41M 3/14 (2006.01) D21H 25/06 (2006.01)

Patent

CA 2214210

The core of the present invention consists of applying a coating that contains film-forming organic pigments (plastic pigments) and binders to at least one side of paper or a paper substrate and then producing a film from this after printing by applying at least heat, but preferably both heat and pressure. The printing ink is embedded between the fused or sintered plastic pigments and thus can no longer be smudged. The surface of the paper becomes abrasion resistant and has film-like properties due to the plastic film and has at least a water-repellent seal, if not a waterproof seal. The applied print image appears to the observer to have greater brightness. It has also been found that print images produced according to this invention have much greater lightfastness than traditional inkjet printings.

Le point central de la présente invention consiste à appliquer un produit de couchage qui renferme des pigment organiques filmogènes (pigments plastiques) et des liants sur au moins un côté du papier ou du substrat du papier et à produire ensuite un film à partir de cette préparation après l'impression en appliquant au moins de la chaleur, mais de préférence en appliquant à la fois de la chaleur et de la pression. L'encre d'impression est noyée entre les pigments plastiques fondus ou frittés et ne peut donc plus être maculée. La surface du papier résiste désormais à l'abrasion et a des propriétés semblables à celles d'un film à cause du film plastique et possède au moins un joint hydrofuge et, si ce n'est un joint imperméable à l'eau. L'image de l'impression appliquée semble plus claire. Il a aussi été découvert que les images imprimées produites d'après cette invention ont une plus grande solidité à la lumière que les impressions ordinaires par jet d'encre.

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