Checking of printing and cutting quality in a package...

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G01N 21/84 (2006.01) B26D 5/34 (2006.01) B31B 1/74 (2006.01) B41F 33/00 (2006.01)

Patent

CA 2040533

In the course of package production, printed sheets (F) are carried by gripper bars through a cutting station (2) of a machine. In an appropriate machine area situated upstream of the ejection device (8) for the front waste strip (Df), a CAMERA-FLASH scanning unit shoots a view of the area comprising the front waste strip (Df) with the colour register marks and at least part of its cut. Image processing by comparison of a sample image to a reference image enables quality checking on packages, especially so by analysing print-to-print and print-to-cut register precision.

endant la production d'emballage, les feuilles imprimées (F) sont entraînées par des griffes de stabilisation vers un poste de coupe (2) d'une machine. Dans une partie appropriée de la machine située en amont du mécanisme d'éjection (8) de la bande jetable frontale (Df), un scanner avec flash photographie la partie qui comprend la bande jetable frontale (Df) avec les repères de couleur et une partie de la coupe. Le traitement d'images par la comparaison d'une image échantillon à une image de référence permet l'inspection de la qualité des emballages, surtout par l'analyse de la précision de la copie alignée impression à impression et de la copie impression à coupe.

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