Printed product

B - Operations – Transporting – 44 – F

Patent

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Details

B44F 1/12 (2006.01) B42D 15/00 (2006.01)

Patent

CA 2524332

The printed product comprises a carrier (1) provided with a relief on the surface thereof in the form of a plurality of grooves and a main visible image transmitted by an ordered screen, wherein said relief and the screen structure of the visible image are embodied in such a way that at least one additional image becomes manifest on the main image background when a lighting or viewing angle is modified. According to the invention, the angle and period (d) of the groove tracing is equal to the angle and lineature of the main image screen, and geometrical distortions whose value corresponds to the value of tonal gradations of the additional image are introduced into the relief and/or the main image screen structure without breaking the continuity of the pattern lines forming said screen and relief, whereby a nonuniform system of cross-points of the grooves with the screen pattern lines (8) forming said additional image is created.

Cette invention concerne des produits imprimés comprenant un support (1) sur la surface duquel un relief se présentant sous la forme d'une pluralité de rainures est réalisé, ainsi qu'une image visible principale transmise par une trame ordonnée. Le relief et la structure de la trame de l'image visible sont tels que toute variation de l'angle d'éclairage ou d'observation sur l'arrière-plan de l'image principale révèle au moins une image latente supplémentaire. Selon cette invention, l'angle et la période (d) de formation des rainures sont égaux à l'angle et à la linéature de la trame de l'image principale et des distorsions géométriques sont introduites dans le relief et/ou la structure de la trame de l'image principale sans que cela rompe la continuité des lignes structurelles formant la trame et le relief. La valeur des distorsions correspond à la valeur des gradations tonales de l'image latente supplémentaire, ce qui permet de créer un système non uniforme de points de croisement des rainures avec les lignes (8) de la structure de la trame formant cette image supplémentaire.

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