Fabrica Nacional De Moneda Y Timbre-real Casa De La Moneda

Consejo Superior De Investigaciones Cientificas

Fabrica Nacional De Moneda Y Timbre

Andrés Ruiz Quevedo

Javier Gamo Aranda

José Francisco Fernández Lozano

Vicente García Juez

Juan José Romero Fanego

Israel Lorite Villalba

Miguel Ángel Rodríguez Barbero

Guillermo Orellana Moraleda

David García Fresnadillo

Paloma Varela García De Oteyza

José Miguel Silván Pobes

Fernando Álvarez Martínez

Miguel ÁNgel RODRÍGUEZ Barbero

Optical effect pigment comprising a plurality of layers and a magnetic element, the layers can be arranged in two stacks of asymmetric layers or in a single stack of layers and comprise at least an absorber layer and at least a dielectric layer and can further comprise a reflector layer. The magnetic element presents a magnetisation which is out-of-plane, i.e. predominantly perpendicular to the plane of the pigment, which allows a deposition on the printing substrate whereby the face of the pigment lying up or down on the substrate can be predetermined. Such effect pigment has applications in many fields and specifically in security printing, where due to controlled deposition for instance a double-stack pigment will produce a different optical effect on each of its faces.

Optical effect pigment

The present invention relates to the use of non deactivable security markers comprising the combination of at least two types of nanoparticles of materials presenting Raman effect, wherein said nanoparticles are in a dispersed state or is forming agglomerates of between 2 and 500 nanoparticles. The invention also relates to security documents, articles or elements incorporating these markers, as well as to a method and system for the detection thereof.

Use of Raman markers for authenticating security documents

The present invention relates to a new family of luminescent pigments consisting of a salt of two ruthenium(II) complex ions of opposite sign charges comprising N-chelating heterocyclic ligands and to their use in security applications to prevent counterfeiting. The invention also refers to ink compositions and to the security documents or secured goods comprising said luminescent pigments.

Luminescent pigments and their use in security applications

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Madrid, Spain

Andrés Ruiz Quevedo