CENTRE NATIONAL DE LA RECHERCHE SCENTIFIQUE (France)
UNIVERSITÉ JEAN MONNET SAINT ETIENNE (France)
Inventeur(s)
Ayala, Stéphane
Destouches, Nathalie
Hèbert, Mathieu
Dalloz, Nicolas
Doan Le, Van
Abrégé
A method of generating a reduced palette for use in a printing process is disclosed. In the method, a plurality of images obtainable by varying printing parameters of the printing apparatus are printed, and color values of the same are measured. Based on the color values, a clustering is performed to obtain a plurality of clusters having similar color values. For each cluster, one or more representative images are selected to form the palette. In this manner, images with color values both inside a convex hull and on the convex hull can be included in the palette.
G06K 15/02 - Dispositions pour produire une présentation visuelle permanente des données de sortie utilisant des imprimantes
G06K 15/12 - Dispositions pour produire une présentation visuelle permanente des données de sortie utilisant des imprimantes par impression photographique
G06T 7/90 - Détermination de caractéristiques de couleur
2.
SECURITY DOCUMENT AND METHODS OF MANUFACTURING THE SAME
A security document includes a security feature with a hologram and a color image arranged on top of each other. Holographic features of the hologram are visible when the security document is viewed under white light, and a plurality of image features of the color image are visible when the document is viewed under UV light. The image features are perfectly aligned with the holographic features. This can be achieved, for example, by providing one or more registration marks when forming the holographic features, and using said registration marks to later print the color image. Another possibility is to use the structure of the hologram to selectively apply two or more UV-sensitive ink materials onto the hologram to automatically align the same with the holographic features.
An identification document (1) such as a passport booklet, comprising a cover foldable at a folding line (X), an end sheet (11) being foldable at the folding line (X) and attached to the cover, at least one sheet (10) being foldable at the folding line (X), and a closed circuit. The closed circuit comprises an electrical device (25) such as an integrated circuit (35) or a LED light (36) and a conductive thread (20) attaching the at least one sheet (10) to the end sheet (11). The device (25) malfunctions when the closed circuit is interrupted by means of manipulation of the conductive thread (20).
B42B 2/00 - Fixation permanente de feuilles, mains de papier ou cahiers les uns aux autres par couture avec un matériau du genre fil, p. ex. un fil textile
4.
Method of generating a map for use in a laser engraving process and laser engraving method
A laser engraving apparatus (100) is calibrated using a number of predetermined calibration images (12). The calibration images (12) are engraved on a predefined substrate surface (14, 15) of a substrate (16) by varying only a single laser parameter. Based on measured colour values of the engraved calibration images, a relationship between said colour values and a predefined laser parameter value, for example, a predefined laser power, is established. This relationship is then used to generate a map for mapping a grayscale value of an input image to a grayscale value of an output image, which is then engraved on the substrate (16) while varying the same laser parameter that was varied during the calibration.
A secure multi-layered structure (14), for example, for a secure document, the secure multi-layered structure comprising a first layer (20) having a first aperture (25) opened in the first layer, a second layer (30) having a second aperture (35) opened in the second layer, and a third layer (40) having a third aperture (45) opened in the third layer, wherein each layer at least partially overlaps with the layer adjacent to it, at least a portion of the third layer being visible through the first aperture.
B32B 3/26 - Produits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche continue dont le périmètre de la section droite a une allure particulièreProduits stratifiés comprenant une couche ayant des discontinuités ou des rugosités externes ou internes, ou une couche de forme non planeProduits stratifiés comprenant une couche ayant des particularités au niveau de sa forme caractérisés par une couche comportant des cavités ou des vides internes
B32B 27/36 - Produits stratifiés composés essentiellement de résine synthétique comprenant des polyesters
B32B 27/40 - Produits stratifiés composés essentiellement de résine synthétique comprenant des polyuréthanes
B32B 27/08 - Produits stratifiés composés essentiellement de résine synthétique comme seul composant ou composant principal d'une couche adjacente à une autre couche d'une substance spécifique d'une résine synthétique d'une sorte différente
6.
Inlet sheet for a book-like electronic identification document
An inlay sheet for a book-like identification document. The inlet sheet may include a first hinge layer comprising polycarbonate and a second hinge layer comprising a flexible material different to polycarbonate, e.g. PET, polyurethane, fabric, mesh. The second hinge layer is attached to the first hinge layer. A first datapage layer and a second datapage layer are attached to the first hinge layer and the second hinge layer, respectively, such that the first and second hinge layers are positioned between the first and second datapage layers for forming a datapage section having a datapage thickness. The first and second datapage layers form a common datapage inner front edge and the first and second hinge layers extend beyond the common datapage inner front edge such that a hinge section is formed having a hinge thickness smaller than the datapage thickness.
B42D 25/45 - Fabrication associant plusieurs couches
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
An inlay sheet for a book-like identification document. The inlet sheet may include a first hinge layer comprising polycarbonate and a second hinge layer comprising a flexible material different to polycarbonate, e.g. PET, polyurethane, fabric, mesh. The second hinge layer is attached to the first hinge layer. A first datapage layer and a second datapage layer are attached to the first hinge layer and the second hinge layer, respectively, such that the first and second hinge layers are positioned between the first and second datapage layers for forming a datapage section having a datapage thickness. The first and second datapage layers form a common datapage inner front edge and the first and second hinge layers extend beyond the common datapage inner front edge such that a hinge section is formed having a hinge thickness smaller than the datapage thickness.
B42D 25/45 - Fabrication associant plusieurs couches
G06K 19/07 - Supports d'enregistrement avec des marques conductrices, des circuits imprimés ou des éléments de circuit à semi-conducteurs, p. ex. cartes d'identité ou cartes de crédit avec des puces à circuit intégré
The present disclosure refers to an inlay sheet (5) configured to be used in a book-like identification document. The inlet sheet (5) may comprise a first hinge layer (21; 21') consisting of polycarbonate and a second hinge layer (22; 22') consisting of a flexible material different to polycarbonate, e.g. PET, polyurethane, fabric, mesh. The second sheet layer (22; 22') is attached to the first sheet layer (21; 21'). A first datapage layer (11) and a second datapage layer (12) are attached to the first hinge layer (21; 21') and the second hinge layer (22; 22'), respectively, such that the first and second hinge layers (21, 22; 21', 22') are positioned between the first and second datapage layers (11, 12) for forming a datapage section (10) having a datapage thickness (tdp). The first and second datapage layers (11, 12) form a common datapage inner front edge (24) and the first and second hinge layers (21, 22; 21'22') extend beyond the common datapage inner front edge (24) such that a hinge section (20) is formed having a hinge thickness (th) smaller than the datapage thickness (tdp). Furthermore, the present disclosure refers to a method for manufacturing such an inlay sheet (5).
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