Tintas de Seguridad

ASYMMETRIC PIGMENT

Resumen de: US20260152639A1

An asymmetric pigment including a first Fabry-Perot structure; and a second Fabry-Perot structure; wherein the first Fabry-Perot structure and the second Fabry-Perot structure have a similar hue angle within +/−45 degrees is disclosed. Other asymmetric pigments are also disclosed as well as methods of making the disclosed pigments.

PERSONALIZED SECURITY DOCUMENT AND METHOD OF MANUFACTURING THE SAME

Resumen de: WO2025036557A1

A personalized security document (10) includes a first personalized image (5) and a second personalized image (8) as part of a security feature (3). The second personalized image (8) is arranged at a position that corresponds to the first personalized image (5). For example, the first personalized image (5) is laser-engraved in a first surface (6a) of a laser-engravable material layer (6). The second personalized image (8) may be formed by laser-engraving on a second surface (6b) opposite to the first surface (6a) of the laser-engravable material layer (6). Alternatively or additionally, the second personalized image (8) may be formed by printing onto a substrate (1) of the security document (10) of the laser-engravable material layer (6) to form a personalized variable watermark.

MANUFACTURING SECURITY DOCUMENTS BY INTAGLIO-PRINTING A THREE-DIMENSIONAL OBJECT

Resumen de: WO2026109150A1

A method is provided for manufacturing a security document by intaglio-printing a rendering of a three-dimensional object on the security document. The method comprises at least the following: S1) providing a model (1) of the object with a plurality of surfaces (A, B, C, D) in three-dimensional space; S2) attributing, to each point on the surfaces (A, B, C, D), a grayscale or color value; S3) using mapping functions (M) for mapping the surfaces (A, B, C, D) into two-dimensional parameter spaces, thereby defining grayscale or color images (2) in the parameter spaces, wherein the grayscale or color value of each point in said images is given by the grayscale or color of the point on the surface corresponding to the point of the image; S4) rendering, in the parameter spaces, the grayscale or color images (2) as halftone images (3) using halftone patterns, wherein at least some of the halftone patterns are different from each other; S5) using inverses of the mapping functions for mapping the halftone images (3) as textures onto the surfaces (A, B, C, D); S6) projecting the model with the surfaces (A, B, C, D) carrying the textures into a two-dimensional printing plane using a three-dimensional projection (P), thereby projecting said halftone images (3) and textures into the printing plane; S7) rendering, within the printing plane, the surfaces (A, B, C, D) with the textures into a two-dimensional array of printing pixels and forming an intaglio printing plate (5) with recesses co

TRANSITION METAL DICHALCOGENIDE QUANTUM DOTS AND METHODS FOR PRODUCING THE SAME

Resumen de: WO2026107553A1

Disclosed herein is a method for forming transition metal dichalcogenide quantum dots, the method comprising: providing a first mixture comprising a transition metal precursor, a capping agent, and a non-coordinating solvent; heating said first mixture; providing a second mixture comprising a chalcogenide precursor material; and contacting the first mixture and the second mixture to thereby form the transition metal dichalcogenide quantum dots. Also disclosed herein is an ink composition comprising transition metal chalcogenide quantum dots, a spacer material and an organic solvent.

SECURITY FEATURE, PRINTING INK, DOCUMENT OF VALUE, AND AUTHENTICITY CHECKING METHOD

Resumen de: WO2025021691A1

Security feature for protecting a document of value based on a transition-metal-containing ESR-active material that has an alkaline-earth-metal-containing or zinc-containing host lattice with a garnet structure or perovskite structure and has the following general molecular formula EaRbTcXdQeZfO12, where E is at least one alkaline earth metal chosen from the elements Mg, Ca, Sr, Ba or is Zn and a meets the condition 0 < a ≤ 4; R is at least one rare earth metal chosen from the elements Sc, Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and b meets the condition 0 ≤ b ≤ 4; T is at least one transition metal chosen from the elements Cr, Mn, Fe, Cu and c meets the condition 1 ≤ c ≤ 5; X is at least one trivalent codopant chosen from the elements B, Al, Ga, Bi and d meets the condition 0 ≤ d ≤ 4; Q is at least one tetravalent codopant chosen from the elements Si, Ge, Sn, Ti, Zr, Hf and e meets the condition 0 ≤ e ≤ 4; Z is at least one pentavalent codopant chosen from the elements P, As, Sb, V, Nb, Ta and f meets the condition 0 ≤ f ≤ 4.

SECURITY FEATURE, PRINTING INK, VALUE DOCUMENT AND VALUE DOCUMENT SYSTEM

Resumen de: WO2025021692A1

The invention relates to a security feature for securing a value document, wherein the safety feature is based on an ESR-active substance and a luminescent substance, wherein the ESR-active substance and the luminescent substance are either the same substance or different substances, wherein - the luminescent substance emits in the IR wavelength range, is based on a host lattice with garnet structure or perovskite structure and has rare earth metals with a rare earth metal content of ≥2.0 %; - the ESR-active substance has an ESR-active transition metal; - the ESR-active substance has an ESR signal with a g value of <1.9 or >2.1, is based on a transition-metal-containing host lattice with garnet structure or perovskite structure, has a transition metal content of the ESR-active transition metal of ≥5 % and contains rare earth metals, wherein the rare earth metal content is ≥2.0 % and <13.0 % in the event of a garnet structure, and ≥2.0 % and <18.0 % in the event of a perovskite structure.

PERSONALIZABLE SECURITY DOCUMENT AND METHOD OF PERSONALIZING THE SAME

Resumen de: EP4748584A1

0001 A personalizable security document (10) includes a first window (6) and at least one second window (3) formed in an opaque substrate layer (31) of a substrate (1). A laser-engravable material layer (2) is provided on another substrate layer (32) such that it overlaps the first window (6), but does not overlap the at least one second window (3). When an image (12) is laser engraved in the layer of laser-engravable material (2), this image can be seen together with a shape that is defined by an overlap region between the at least one second window (3) and the region in which the layer of laser-engravable material (2) is not provided. Accordingly, different security features can be interlocked with each other. A third window (2a) in the layer of laser-engravable material (2) is provided. A portion (1a) of the substrate is visible through the third window and the second window.

TAGGANT SYSTEMS WITH REMOTELY DETECTABLE SPECTRAL SIGNATURES

Resumen de: US20260140049A1

The present invention provides spectral code strategies that allow spectral codes to be accurately and consistently deployed in a wide range of substrates and background situations. The present invention uses taggant particles with a multilayer structure that is able to produce a strong, consistent spectral signal that is resistant to background noise effects. The spectral output can be read remotely from a distance using multispectral, particularly hyperspectral, imaging techniques.

METHOD FOR PRODUCING A SECURITY OR VALUABLE DOCUMENT, FOR VERIFYING THE AUTHENTICITY OF A SECURITY OR VALUABLE DOCUMENT, AND SECURITY OR VALUABLE DOCUMENT

Resumen de: EP4744903A1

0001 Die Erfindung betrifft ein Verfahren zur Herstellung eines Sicherheits- oder Wertdokumentes (20), mit einem Datenträger (1), der mit einem gedruckten Bild (12) einer Person versehen ist. Um die Fälschungssicherheit zu erhöhen, wird nach dem Erstellen eines Bildes (12) der Person wenigstens ein bildspezifisches Bildmerkmal (17) aus dem Bild bestimmt. Das Bildmerkmal (17) wird als elektrisch leitfähige Struktur (18) in den Datenträger (1) eingebracht. Des Weiteren betrifft die Erfindung ein entsprechendes Sicherheits- oder Wertdokument, ein Verifikationsverfahren zur Echtheitsprüfung eines solchen Dokuments, sowie eine Prüfanordnung (40) für ein derartiges Verifikationsverfahren.

PROCESO DE IMPRESIÓN

Resumen de: WO2025168506A1

The invention provides a novel security feature and a method for making it 3b.

PROCESO DE IMPRESIÓN

Resumen de: WO2025168507A1

The invention provides a novel security feature and a method for making it.

PROCESO DE IMPRESIÓN

Resumen de: WO2025168440A1

The invention provides a novel security feature and a method for making it.

PATTERN-CONTROLLED SURFACE RELIEF STRUCTURES COMPRISING LIQUID CRYSTALS

Resumen de: WO2026099089A1

The present invention relates to a process for the production of a security element, which comprises an optical structure with relief effect, comprising a) providing a (flexible) substrate suitable for aligning liquid crystals; b) depositing a curable composition, or a solvent-based composition, comprising a polymer, which is insoluble in the liquid crystal composition from step e) after evaporation of solvent, in a pattern on the substrate; c) optionally evaporating the solvent of the curable composition by applying IR-radiation and/or thermal drying; or evaporating the solvent of the solvent-based composition by applying IR-radiation and/or thermal drying; d) curing the pattern of the curable composition deposited in step b) by means of UV/VIS radiation or electron beam, wherein the curable composition and the solvent-based composition comprise at least one silicone compound having at least one functional group; preferably having at least two functional groups; and/or at least one silicone compound having at least one polymerizable group, especially having at least one ethylenically unsaturated group; preferably having at least two polymerizable groups, especially having at least two ethylenically unsaturated groups; e) applying a liquid crystal composition on at least a part of the substrate and on at least part of the pattern; f) optionally evaporating the solvent of the liquid crystal composition by applying IR-radiation and/or thermal drying; g) curing the liquid crysta

PRINTING PROCESS FOR PIERCING-RESISTANT FLAME-RETARDANT LABEL

Resumen de: WO2026097941A1

A printing process for a piercing-resistant flame-retardant label, relating to the technical field of printing. The flame-retardant label comprises a piercing-resistant base layer (10), a flame-retardant layer (20), a printed pattern layer (30), and a piercing-resistant surface layer (40) which are arranged in sequence. The base layer (10) and the surface layer (40) are DuPont films laminated together via a composite process, and the durability and use effect of the label are improved by means of the piercing resistance of the Dupont films. In the printing process, the treatment of the base layer (10) comprises stretching to ensure a flat surface, followed by precisely applying thereon a bonding layer (102) and an adhesive film layer, as well as attaching the flame-retardant layer (20), thereby effectively improving the flatness and structural strength of the base layer (10) and imparting excellent flame-retardant properties to a product. Additionally, the flame-retardant properties and the structural strength can both be improved, providing a powerful guarantee for product safety.

A METHOD FOR PRODUCING INTERFERENCE ELEMENTS

Resumen de: US20260132298A1

The present invention relates to a decorative, or security element and a method for producing the decorative, or security element. The decorative, or security element comprises in this order (a) a substrate; (b) a coating, comprising transition metal particles (A) having a number mean diameter of from 15 nm to 700 nm, wherein the transition metal is selected from silver, copper, gold and palladium, especially silver and copper, very especially silver; (c) optionally a protective coating; wherein the coating (b) is derived from (b1) a solvent based composition, comprising the transition metal particles and a vehicle; and (b2) the coating (b) has a three layer structure: (b2a) a layer, comprising the transition metal particles and a vehicle; (b2b) a layer, comprising the vehicle, which is essentially free of transition metal particles; (b2c) a layer, comprising the transition metal particles and the vehicle. The method comprises the steps of i) applying a solvent based composition comprising transition metal particles and the vehicle; on at least part of the surface of the substrate, and ii) drying the solvent based composition; iii) curing the solvent based composition so as to form the three-layer structure which exhibits intensive angle-dependent colors in reflection on the coating side and/or on the substrate side of the decorative, or security element and a distinctive color in transmission; and iii) optionally applying a protective coating on the coating (b). The three-la

SHEET RECOGNITION UNIT, SHEET HANDLING DEVICE, SHEET RECOGNITION METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM

Resumen de: US20260133127A1

Provided is a sheet recognition unit including: a light source capable of irradiating a sheet to be recognized with light having a specific wavelength; a light sensor that includes a plurality of light receiving elements respectively including a plurality of color filters that transmit infrared light and have different visible light transmission characteristics, receives, at the plurality of light receiving elements, light arriving from the sheet to be recognized, based on the light from the light source, and outputs light detection signals; and processing circuitry that performs arithmetic on light amount data based on the light detection signals output from the light sensor, depending on a ratio of genuine reference data to calculate an amount of at least one color in visible light and an amount of infrared light and recognize the sheet to be recognized based on calculated results.

SYSTEMS AND METHODS FOR IMPLEMENTING A MICRO-SYMBOL-BASED SECURITY MARK

Resumen de: US20260131589A1

The present disclosure describes methods and systems for implementing a security mark. The method includes receiving an input image and a predefined security label. Based on the received security label, a micro-symbol is selected and an output image is generated such that the selected micro-symbol is embedded in the output image. Further, the present disclosure describes methods and systems for controlling a preset task. The method includes receiving an input image including a micro-symbol. Thereafter, a principal character and a set of peripheral characters are determined in the microtext characters. Once determined, a color and an angle associated with the set of peripheral characters are compared with a color and an angle associated with pre-stored micro-symbols. Upon successful comparison, a security label associated with the micro-symbol is determined and accordingly, a preset task is inhibited for the input image.

METHOD FOR CREATING A DIGITALLY PRINTED DÉCOR COMPRISING A CONCEALED CODE

Resumen de: WO2025008737A1

Method for generating a control file for a digital printer, wherein the control file is provided for printing a decorative pattern on a sheet. The decorative pattern is modified such that it comprises a concealed code. The method comprises the steps of - printing a first master decor showing the decorative pattern on a first sample of the sheet, thereby obtaining a first sample sheet comprising the first master decor; - performing a process on the first sample sheet comprising the first master decor, wherein the process causes a deformation of the printed first master decor on this first sample sheet; - measuring this deformation on the first sample sheet; - modifying the first master decor thereby obtaining a second master decor, wherein the second master decor is modified compared to the first master decor such that it compensates for the deformation occurring in said process; - generating a control file for a digital printer for printing the second master decor on a sheet having the same characteristics as the first sample sheet; characterized in that the printed second master decor comprises the concealed code invisible to the human eye but machine readable.

INSPECTION SYSTEM AND GAME TOKEN

Resumen de: EP4741173A2

An inspection system for inspecting a game token, includes: a game token assigned with code information such that an ID mark region covered with a UV ink is partially irradiated with laser light to denature or remove the irradiated part; an ultraviolet irradiation lamp for irradiating the game token with ultraviolet light for visualizing the UV ink; a UV camera configured to shoot the game token irradiated with ultraviolet light; and an inspection device configured to recognize the code information that has been visualized by the irradiation with ultraviolet light based on an image shot by the UV camera and determine authenticity of the game token.

SECURITY ELEMENT AND PIGMENTS FOR PREPARING AN OPTICALLY VARIABLE INK

Resumen de: EP4741172A1

0001 It is disclosed a security element for protecting valuables. The security element comprises a substantially flat substrate (2) having a surface defining a basic plane, and a printed layer (4) which is applied to the surface of the substrate (2) and comprises pigments (6, 8, 28) for generating a color-shift under white light illumination. The pigments (6, 8; 28) comprise at least one first dielectric layer (18) and at least one second dielectric layer (22) each as a spacer between two layers (14, 16), wherein the first (18) and second dielectric layers (22) have different layer thicknesses, the layer thickness of the first dielectric layer (18) is selected such that the pigments (6, 8, 28) are configured to generate a short wavelength color in reflection at a normal viewing angle (24) normal to the basic plane and under white light illumination, and the layer thickness of the second dielectric layer (22) is selected such that the pigments (6, 8, 28) are configured to generate a long wavelength color in reflection at an oblique viewing angle (26) of 60° relative to the normal of the basic plane and under the white light illumination.

Gegenstand mit einer Sicherheitsbedruckung, System und Verfahren zum Ausbilden einer Sicherheitsbedruckung

Resumen de: DE102024131525A1

Ein Gegenstand (2, 10) umfasst eine Sicherheitsbedruckung, die eine Bedruckung aufweist, welche an dem Gegenstand (2, 10) angeordnet oder ausgebildet ist und die zumindest ein CMY-Element umfasst, das aus einer vorgegebenen Zusammensetzung allein aus den Druckfarben Cyan (C), Magenta (M) und Gelb (Y) mit vorgegebener Druckstärke, vorgegebener Mischmenge und vorgegebenem Farbort mittels Drucken ausgebildet ist, sodass es in dem für das menschliche Auge sichtbaren Spektralbereich als schwarz oder dunkel wahrgenommen wird und in einem für das menschliche Auge nicht sichtbaren Spektralbereich transparent eingerichtet ist. Das CMY-Element wirkt mit einem weiteren Element zusammen, das an dem Gegenstand (2, 10) angeordnet oder mit diesem ausgebildet ist und das in dem für das menschliche Auge sichtbaren Spektralbereich wahrnehmbar ist und in dem vorgegeben nicht sichtbaren Spektralbereich absorbierend eingerichtet ist.

SYSTEM AND METHOD FOR FORMING AN IMAGE ON A SUBSTRATE

Resumen de: US20260115759A1

A scanning laser having a wavelength compatible with a coating binder so as to cure it as the laser scans and irradiates the coating on a moving web. A system and method for curing flakes by providing a scanning laser which scans across a moving coated substrate in a magnetic field allows images to be formed as magnetically aligned flakes are cured into a fixed position. The images have regions of cured aligned flakes. The scanning laser cures the magnetically aligned flakes within it region it irradiates. Alternatively an array of lasers can be used wherein individual lasers can be switched on and off to fix irradiated coating as a moving web is moved at a high speed.

Sicherheitselement mit motivbildender Flüssigkristallschicht

Resumen de: DE102024131190A1

Die Erfindung betrifft ein Sicherheitselement (20) zur Absicherung von Wertgegenständen (10), mit einer Motivschicht auf Basis eines flüssigkristallinen Materials, das zu Ausbildung eines latenten Motivs ausgelegt und bestimmt ist. Erfindungsgemäß ist dabei vorgesehen, dass das Sicherheitselement (20) eine auf einer Trägerfolie (22) angeordnete erste Prägelackschicht (26), eine auf der ersten Prägelackschicht (26) partiell vorliegende Motivschicht (30) auf Basis eines nematischen flüssigkristallinen Materials und eine ein- oder mehrschichtige vollflächig vorliegende zweite Prägelackschicht (34) umfasst. Das nematische flüssigkristalline Material enthält mindestens einen dichroitischen Fluoreszenzfarbstoff, dessen Emission von polarisiertem Licht von seiner Orientierung abhängt. Die dem nematischen flüssigkristallinen Material zugewandte Oberfläche der ersten Prägelackschicht (26) ist mit einer Prägung versehen, die zur Ausbildung eines zweiten latenten Motivs zumindest zwei Bereiche (28A, 28B) mit Ausrichtungsstrukturen unterschiedlicher Orientierung aufweist, wobei das nematische flüssigkristalline Material durch die motivbildenden Bereiche (28A, 28B) in Form des zweiten latenten Motivs mit jeweils unterschiedlicher Orientierung homogen ausgerichtet ist, so dass das von den unterschiedlichen Ausrichtungsstrukturen gebildete zweite latente Motiv durch Emission von polarisiertem Licht erkennbar ist. Dabei ist die Motivschicht (30) in Form eines ersten latente

Verfahren zum Erzeugen eines Sicherheitsmerkmals in Form eines visuellen Effekts

Resumen de: DE102024131164A1

Die Erfindung betrifft ein Verfahren zum Erzeugen eines Sicherheitsmerkmals in Form eines visuellen Effekts, wobei das Sicherheitsmerkmal in einem Sicherheitsdokument ausgebildet wird und ein Substrat aus einer Lage oder mehreren plan übereinander angeordneten Lagen jeweils aus einem transparenten Polymerwerkstoff aufweist, wobei auf einer Seite einer ersten Lage ein erstes Druckbild und auf einer dem ersten Druckbild gegenüberliegenden Seite der ersten Lage ein zweites Druckbild aufgebracht werden und/oder wobei auf einer Seite einer ersten Lage ein erstes Druckbild und dem ersten Druckbild gegenüberliegend auf einer Seite einer zweiten Lage ein zweites Druckbild aufgebracht werden, wobei das Substrat an seiner Oberseite und/oder an seiner Unterseite jeweils eine lichtundurchlässige Schutzbeschichtung mit mindestens einer fensterförmigen Aussparung aufweist, wobei das erste und das zweite Druckbild jeweils im Bereich der jeweiligen fensterförmigen Aussparung einander überdeckend angeordnet werden, wobei entweder mehrere jeweils mit einem ersten Druckbild und mit einem zweiten Druckbild bedruckte Substrate von verschiedenen Sicherheitsdokumenten jeweils im Bereich ihrer fensterförmigen Aussparung aufeinandergelegt werden oder wobei mehrere jeweils mit einer fensterförmigen Aussparung in der Schutzbeschichtung ausgebildete Bereiche des jeweils mit einem ersten Druckbild und mit einem zweiten Druckbild bedruckten Substrats desselben Sicherheitsdokuments aufeinandergele

SECURITY ELEMENT WITH MOTIF-PRODUCING LIQUID CRYSTAL LAYER AND CORRESPONDING MANUFACTURING METHOD

Nº publicación: EP4733082A1 29/04/2026

Solicitante:

GIESECKE & DEVRIENT CURRENCY TECHNOLOGY GMBH [DE]
Giesecke+Devrient Currency Technology GmbH

Resumen de: EP4733082A1

Die Erfindung betrifft ein Sicherheitselement (20) zur Absicherung von Wertgegenständen (10), mit einer Motivschicht auf Basis eines flüssigkristallinen Materials, das zu Ausbildung eines latenten Motivs ausgelegt und bestimmt ist. Erfindungsgemäß ist dabei vorgesehen, dass das Sicherheitselement (20) eine auf einer Trägerfolie (22) angeordnete erste Prägelackschicht (26), eine auf der ersten Prägelackschicht (26) partiell vorliegende Motivschicht (30) auf Basis eines nematischen flüssigkristallinen Materials und eine ein- oder mehrschichtige vollflächig vorliegende zweite Prägelackschicht (34) umfasst. Die dem nematischen flüssigkristallinen Material zugewandte Oberfläche der ersten Prägelackschicht (26) ist mit einer Prägung versehen, die zur Ausbildung eines zweiten latenten Motivs zumindest zwei Bereiche (28A, 28B) mit Ausrichtungsstrukturen unterschiedlicher Orientierung aufweist. Zumindest eine der Ausrichtungsstrukturen der motivbildenden Bereiche (28A, 28B) bildet ein Gittermuster mit Strichgitterlinien, deren Beabstandung über die Fläche des motivbildenden Bereichs variiert, so dass die Ausrichtungsstruktur ein aperiodisches Gitter bildet. Die Motivschicht (30) ist in Form eines ersten latenten Motivs bereichsweise direkt auf der ersten Prägelackschicht (26) und überlappend mit den das zweite latente Motiv bildenden Bereichen (28A, 28B) angeordnet. Dabei ist das nematische flüssigkristalline Material durch die motivbildenden Bereiche in Form des zw