Laser-sensitive recording materials having an undercoating...

B - Operations – Transporting – 41 – M

Patent

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Details

B41M 5/26 (2006.01) B41M 5/28 (2006.01) B41M 5/30 (2006.01) B41M 5/32 (2006.01) B41M 5/42 (2006.01)

Patent

CA 2679327

The present invention provides a laser-sensitive recording material, which comprises a substrate being coated with a recording layer and an undercoating layer, wherein the recording layer undergoes a colour change upon heat treatment produced by laser irradiation and wherein the undercoating layer comprises a pigment with the proviso that the system of the recording layer that undergoes a colour change upon heat treatment produced by laser irradiation does not comprise an organic leuco dye and an organic colour developer, a process for its preparation, a process for marking the laser-sensitive recording material and the marked laser-sensitive recording material.

La présente invention concerne un matériau d'enregistrement sensible au laser, qui comprend un substrat qui est revêtu d'une couche d'enregistrement et d'une sous-couche, la couche d'enregistrement subissant un changement de couleur lors d'un traitement thermique produit par une irradiation laser, et la sous-couche comprenant un pigment à la condition que le système de la couche d'enregistrement qui subit un changement de couleur lors d'un traitement thermique produit par une irradiation laser ne comprenne pas un colorant leuco organique et un développeur de couleur organique. L'invention porte également sur un procédé de préparation de ce matériau d'enregistrement, sur un procédé pour le marquage du matériau d'enregistrement sensible au laser et sur le matériau d'enregistrement sensible au laser marqué.

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