Color ribbon for thermo-sublimation print, method for the...

B - Operations – Transporting – 41 – M

Patent

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Details

B41M 5/035 (2006.01) B41M 5/44 (2006.01) B41M 5/00 (2006.01) B41M 5/40 (2006.01)

Patent

CA 2233778

Description of a color ribbon for thermo-sublimation print, comprising a carrier and a color layer formed on the carrier, with a sublimeable coloring substance disperse in a polymer binding agent, whereby a top coat is located on the color layer which contains a water-soluble cellulose ether. The cellulose ether preferably contains C1-C4-alkyl- or C1-C4-alkyl-hydroxyalkyl remnants and is specifically. Methyl-hydroxy- ethyl cellulose. The color ribbon has the advantage that the transferred color substance volume is selectively reduced with low print energies, that inside the ribbon spool there is no unwelcome color substance transfer onto the neighboring loops and that during the printing procedure there is no agglutination between the color layer of the color ribbon and the color receiving layer of the receiver foil.

Description d'un ruban coloré servant à l'impression par thermosublimation, constitué d'un support et d'une couche de couleur formée sur le support, ainsi que d'une substance colorante sublimable dispersée dans un liant polymérique, et d'une couche de finition sur la couche de couleur qui contient un éther cellulosique hydrosoluble. L'éther cellulosique contient de préférence un alkyle en C1-C4 ou un alkyl(en C1-C4)-hydroxyalkyle et est spécifiquement la méthylhydroxyéthylcellulose. Le ruban coloré possède l'avantage de transférer un volume sélectivement réduit de substance colorée tout en exigeant peu d'énergie durant l'impression, de ne donner lieu, à l'intérieur de la bobine, à aucun transfert non voulu de substance colorée sur les anneaux avoisinants et à n'entraîner aucune agglutination entre la couche de couleur du ruban coloré et la couche de la feuille destinée à recevoir la couleur.

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