Abstract: The invention relates to a security strip and security paper for obtaining security documents such as legal tender notes, checks or identification documents, comprising a cellulose support web that is completely embedded in a pulp substrate. As both the substrate and the support web are formed by plant fibers, a series of physical and chemical bonds are established between the fibers of both elements, the support web thus being perfectly integrated in the pulp. The cellulose support web will sometimes have a series of security elements, such as pigments, synthetic elements and/or security fibers of the type normally used in this type of application.

Abstract: The present invention relates to the use of non-deactivatable security compositions comprising the combination of at least two types of particles of oxide materials, where said particles have a different size and/or morphology, and where the inorganic oxide materials have at least one transition metal or one lanthanide element, and radiofrequency wave absorption properties. The invention also relates to security articles, documents or elements incorporating these compositions, as well as to a method and to a system for detection thereof.

Abstract: A security document (1) comprises a paper document substrate (11) and a security element (2) embedded in said document substrate (11). The security element comprises an element substrate (21) and a material (22) sensitive to laser light. The method comprises the step of directing laser light (41) onto the document substrate (11) so as to alter said material (22), so as to provide said security element (2) with a detectable marking (3).

Abstract: The present invention relates to an object comprising a region of its surface suitable for showing a plurality of images. Each of these images is observable from a different direction such that upon observing one of the images the other images stop being observable and do not interfere in the viewing of the observed image. The configuration which allows generating the region of surfaces suitable for showing the plurality of images allows for mass production by means of stamping or minting techniques and complicates the reproduction by unauthorized manufacturers. A method which allows obtaining the object having a region suitable for showing a plurality of images is also an object of the present invention.

Abstract: The present invention relates to the use of non-deactivatable security compositions comprising the combination of at least two types of particles of oxide materials, where said particles have a different size and/or morphology, and where the inorganic oxide materials have at least one transition metal or one lanthanide element, and radiofrequency wave absorption properties. The invention also relates to security articles, documents or elements incorporating these compositions, as well as to a method and to a system for detection thereof.

Abstract: 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.

Abstract: The present invention relates to the use of nanocompounds as non deactivable security markers comprising a charge-transfer complex of at least two different size metal atomic quantum clusters (AQCs). These nanocompounds are luminescent, particularly fluorescent after external excitation. The invention also relates to security documents, articles or elements incorporating these markers as well as to a method and a system for detecting the same.

Abstract: The invention consists in a security paper, as well as the security document obtained with it and the manufacturing process thereof, that combines the security elements called windowed thread with the high contrast single-tone watermark technique. In order to carry out this invention, we make use of the recesses created to cover the thread in the areas where it is visible, which exhibit a greater accumulation of fibers and are therefore opaque areas in the final paper, to insert therein the electrotype or high contrast single-tone watermarks.

Abstract: The invention consists in a security paper, as well as the security document obtained with it and the manufacturing process thereof, that combines the security elements called windowed thread with the high contrast single-tone watermark technique. In order to carry out this invention, we make use of the recesses created to cover the thread in the areas where it is visible, which exhibit a greater accumulation of fibres and are therefore opaque areas in the final paper, to insert therein the electrotype or high contrast single-tone watermarks.

Abstract: Applicable to be used to issue notes of legal tender or any other type of document to facilitate its tactile recognition or prevent its falsification. It consists of a sheet of paper in which expanding agents have been inserted, either centered heightwise or near the upper surface and/or lower surface thereof, forming a figure or inscription which, upon application of pressure and heat, either during the paper manufacturing phase or subsequent processes, cause the sheet of paper to expand, thereby forming a curved and continuous embossing on the surface of the document.