Alerta

METHOD OF FORMING A SECURITY FEATURE FOR A SECURITY DOCUMENT

Resumen de: EP4659965A1

A plurality of optically variable inks (2, 3, 5, 8) are used to print a multiplexed image (18) that can be observed in at least a first observation mode and a second observation mode on a substrate (1) of a security document (10). The optically variable inks (2, 3, 5, 8) are selected such that, in the first observation mode, first and second optically variable inks have a first color and third and fourth optically variable inks have a second color and, in the second observation mode, the first ink and the third ink have a third color and the second ink and the fourth ink have a fourth color. This allows for displaying different bicolor images in the first and second observation modes, where the appropriately configured inks can be selected from a set of available optically variable inks, or obtained by mixing such inks with one or more additional inks.

COMPOSIÇÃO DE TINTA OPTICAMENTE VARIÁVEL NA FAIXA DO ULTRAVIOLETA PARA IMPRESSÕES DE SEGURANÇA E/OU DE VALOR, DOCUMENTO DE SEGURANÇA E/OU DE VALOR E PROCESSOS DE PREPARAÇÃO ASSOCIADOS

Resumen de: PT119510A

A INVENÇÃO REFERE-SE A UMA COMPOSIÇÃO DE TINTA OPTICAMENTE VARIÁVEL NA FAIXA DO ULTRAVIOLETA PARA IMPRESSÕES DE SEGURANÇA E/OU DE VALOR COMPREENDENDO NANOPARTÍCULAS DIELÉTRICAS, UM DISPERGENTE COMPREENDENDO ETANOL, UM CO-DISPERGENTE COMPREENDENDO ETILENOGLICOL E UM DISPERSANTE DAS NANOPARTÍCULAS DIELÉTRICAS COMPREENDENDO POLIVINILPIRROLIDONA. A INVENÇÃO TAMBÉM INCLUI O PROCESSO DE PREPARAÇÃO DA COMPOSIÇÃO DE TINTA E UM DOCUMENTO DE SEGURANÇA E/OU DE VALOR COMPREENDENDO UMA CAMADA REVESTÍVEL (1), REVESTIDA POR UMA CAMADA (2), FEITA DA COMPOSIÇÃO DE TINTA, E OPCIONALMENTE COBERTA POR UMA SEGUNDA CAMADA FLEXÍVEL (2). A COMPOSIÇÃO DE TINTA É COMPATÍVEL COM VÁRIAS TÉCNICAS DE IMPRESSÃO E APRESENTA UMA AGREGAÇÃO MÍNIMA E UMA RESPOSTA ÓTICA INTENSA NA GAMA DO ULTRAVIOLETA UVA, QUE SÃO ATRIBUTOS RELEVANTES PARA A CONCRETIZAÇÃO DE TINTAS DE SEGURANÇA OCULTAS FIÁVEIS E ÚNICAS. ADICIONALMENTE, O TEMPO DE SECAGEM DA COMPOSIÇÃO DE TINTA É CURTO, OQUE É RELEVANTE PARA PROCESSOS DE IMPRESSÃO MAIS RÁPIDOS, TIPICAMENTE AO NÍVEL INDUSTRIAL.

Procédé d’impression additif d’un support utilisant des encres invisibles fluorescentes

Resumen de: FR3162673A1

L’invention concerne un procédé d’impression d’une image sur un document de sécurité, ledit procédé utilisant des encres invisibles qui sont fluorescentes et visibles sous un rayonnement ultraviolet, caractérisé en ce qu’il comporte une étape de synthèse additive de couleurs, consistant à : Décomposer une image numérique visible en trois masques d’images numériques Rouge, Vert et Bleu (R, V, B) de façon que la superposition des trois masques corresponde à l’image de base ;appliquer à chaque masque de couleur numérique R, V, B un traitement informatique consistant à introduire des motifs de sécurité dans chacun des masques numériques R,V,B ;imprimer sur un support physique (papier, polycarbonate) ces trois masques Rouge, Vert et Bleu les uns sur les autres, en utilisant des encres invisibles luminescentes de façon à former sur le support une image invisible contenant les motifs de sécurité préalablement introduits dans les trois masques numériques RVB. Figure pour l’Abrégé : figure 2

RECORDING BODY AND ARTICLE

Resumen de: US2025367958A1

A recording body that makes it difficult to take out a recording member therefrom. The recording body includes an exterior material covering at least a part of a surface of a laminate. The laminate includes a base material, an intermediate layer having a housing portion, a recording member provided in the housing portion, and an overlay layer. The housing portion is in a part of a plane of the intermediate layer. The housing portion is a through hole penetrating the intermediate layer in a thickness direction thereof or a recess recessed in the thickness direction of the intermediate layer. The recording member includes a color development layer containing a coloring compound having an electron donating property, a developer having an electron accepting property, and a matrix resin. The base material, the intermediate layer, and the overlay layer contain the same type of resin material and are bonded by fusion.

DATA CARRIER WITH MACHINE-READABLE SECURITY FEATURE, PRODUCTION METHOD AND AUTHENTICITY CHECK METHOD

Resumen de: MX2025004941A

The invention relates to a data carrier (10), in particular a value or security document, having a substrate (20) which comprises at least one transparent plastics layer and two opposing main surfaces. The data carrier additionally contains two opaque-white layers (22, 32) having a white, opaque appearance, which are applied to the opposing main surfaces of the substrate (20). Each of the opaque-white layers (22, 32) consists of a layer sequence of two or more partial layers (24a-c, 34a-c) extending from a lowermost white layer (24a, 34a) to an uppermost white layer (24c, 34c). The data carrier also contains a machine-readable security feature which comprises a machine-readable feature substance (38) which is present in at least one of the partial layers (24c) of at least one of the opaque-white layers (22, 32).

DATA CARRIER HAVING A MACHINE-READABLE SECURITY FEATURE, PRODUCTION METHOD, AND SECURITY SUBSTRATE SHEET

Resumen de: CN120225366A

The invention relates to a data carrier (10), in particular a value document or security document, comprising a substrate (12) having a plastic layer, and further comprising machine-readable security features (52, 54). According to the invention, the machine-readable security feature (52, 54) comprises a machine-readable feature material which is present in an embedded layer applied to the substrate, i.e. A white cover layer (30, 34), a functional layer (32, 36), a print receiving layer and/or a paint layer (40).

ENERGY CONVERTING PARTICLES AND METHODS FOR THEIR USE IN SECURITY, ANTICOUNTERFEITING, AND ANTI-TAMPERING END-USES

Resumen de: WO2024158807A2

A method for security marking of an article is provided. The method includes the step of providing a marking composition. The marking composition includes one or more energy converters which emit UV and/or visible light upon interaction with an applied external energy, and, optionally, a carrier. The marking composition is applied onto at least a part of a surface of the article.

INCLUSIONS FOR USE IN SECURITY PAPERS, METHOD OF MANUFACTURING THEM AND AUTHENTICATIG METHOD

Nº publicación: EP4656404A1 03/12/2025

Solicitante:

SECURITY FIBRES UK LTD [GB]
Security Fibres UK Limited

Resumen de: EP4656404A1

An inclusion (2) for incorporation into a security paper substrate (92) is disclosed. The inclusion (2) comprises a substrate (4); a first luminescent region (6) on a first and/or second side of the substrate (4), the first luminescent region (6) emitting visible light of (i) a first colour when viewed under ultraviolet light of a first wavelength and (ii) a second, different, colour when viewed under ultraviolet light of a second, different, wavelength. The substrate (4) also comprises a second luminescent region (8) on the first and/or second side of the substrate, the second luminescent region (8) emitting visible light of a different colour to the first luminescent region (6) when viewed under ultraviolet light of the first wavelength and/or emitting visible light of a different colour to the first luminescent region (6) when viewed under ultraviolet light of the second wavelength. A security paper (90) and a security document comprising such an inclusion (2), and a method (150) of manufacturing such an inclusion (2) are also disclosed.