Ir-absorbing intaglio ink

Details Ir-absorbing intaglio ink Ir-absorbing intaglio ink

C - Chemistry, Metallurgy

09

D

C09D 11/02 (2006.01) B41M 3/14 (2006.01)

Patent

CA 2629933

Pasty ink for the engraved steel die printing process, having a viscosity value above 3 Pa.s, preferably above 5 Pa.s at 40~C, and comprising an infrared absorbing material, wherein said infrared absorbing material is a transition element compound whose IR-absorption is a consequence of electronic transitions within the d-shell of transition element atoms or ions.

L'invention porte sur une encre en pâte pour l'impression de pièces gravées d'acier. Ladite encre présente une viscosité supérieure à 3 Pa.s et de préférence à 5 Pa.s à 40 °C, et comporte un matériau absorbant l'IR composé d'un élément de transition et dont l'absorption de l'IR est une conséquence des transitions électroniques à l'intérieur de la coquille d des atomes ou ions de l'élément de transition.

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