Document fiduciaire ou assimile comportant des motifs sous...

B - Operations – Transporting – 42 – D

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Details

B42D 15/10 (2006.01) B41M 3/14 (2006.01) B44F 1/12 (2006.01)

Patent

CA 2726968

The present invention particularly relates to a fiduciary or similar document (1), such as a banknote, passport, or identification card of the type including a substrate (3) whereon security imprints are provided. It is essentially characterized in that said security prints include:  - a first design (5), consisting of a perforated or non-perforated first ink color block print (50), - at least one second design (6), not identical to the first and consisting of a second ink print in the form of a line block or at least one color block, one of the two designs partially covering the other, - a copperplate print (7), covering at least the common surface of said first and second designs (5,6), such that: - the design (5) having the largest surface is visible to the naked eye, and the other design (6) is invisible to the naked eye, under natural or artificial lighting with specular reflection; - while said other design (6) becomes gradually visible to the naked eye under natural or artificial lighting in the form of a diffused light source.

La présente invention est relative notamment à un document fiduciaire ou assimilé (1), tel qu'un billet de banque, un passeport, une carte d'identité, du type qui comprend un support (3) sur lequel sont prévues des impressions de sécurité Il se caractérise essentiellement par le fait que lesdites impressions de sécurité comprennent - un premier motif (5) constitué d'une impression d'une première encre sous forme d'un à-plat (50), ajouré ou non, - au moins un deuxième motif (6), non identique au premier, constitué d'une impression d'une deuxième encre sous forme de traits et/ou d'au moins un à-plat, l'un des deux motifs recouvrant au moins partiellement l'autre, - une impression en taille douce (7) qui recouvre au moins la surface commune auxdits premier et deuxième motifs (5, 6), de sorte que - le motif (5) qui présente la surface la plus grande est visible et l'autre motif (6) est au moins partiellement invisible à l'oeil nu, selon un éclairage naturel ou artificiel, sous réflexion spéculaire, - tandis que ledit autre motif (6) devient intégralement visible à l'oeil nu selon un éclairage naturel ou artificiel, sous la forme d'une source lumineuse diffuse

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