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XANTHENE COMPOUNDS HAVING A WAVELENGTH IN THE RANGE FROM 650 TO 1200 NM

Absstract of: US20260209251A1

0000 The present invention relates to compounds of the formula 0000 0000 a process for its preparation and its use as compound that absorbs light emitted from an irradiation source and optionally emits light different from that of the irradiation source and having a wavelength in the range from 650 to 1200 nm; in photovoltaic applications; or in bioimaging, or in photodynamic therapy; or as semiconductor in organic electronic applications; as laser dye, in an ink for machine readability and/or security applications or for the laser-welding of plastics; or for brand protection or as marker for liquids. The compounds of formula (I) may have a high molar extinction coefficient, a high fluorescence quantum yield, a high solubility and stability in the application medium, good storage stability and/or good detectability even in very small amounts in correspondingly marked liquids.

GENERATING UNIQUE IDENTIFIERS FROM A COLLECTION OF PARTICLES

Absstract of: WO2025059631A1

In a general aspect, a unique marker includes a plurality of particles. In some cases, the particles are distributed (e.g., fixed) on a surface, and a unique code can be generated based on the spatial properties (e.g., relative positions and relative orientations) of the projection of these particles onto a plane. A computing system may generate the unique code, and the spatial properties may be determined from data obtained by a camera or another type of optical detector.

Optisch variables Sicherheitselement, Wertdokument und Herstellungsverfahren

Absstract of: DE102025101525A1

Es ist ein Optisch variables Sicherheitselement zur Absicherung von Sicherheitspapieren, Wertdokumenten und anderen Wertgegenständen offenbart, das einen Substratkörper (2), der eine Vorderseite (4) und eine Rückseite (6) hat, und eine Druckschicht (8), die auf die Vorderseite (4) des Substratkörpers (2) aufgebracht ist und erste Pigmente (10) enthält, aufweist. Die ersten Pigmente (10) weisen jeweils einen Mehrschichtaufbau umfassend eine Reflektorschicht, eine Absorberschicht und eine dielektrische Abstandsschicht, die zwischen der Reflektorschicht und der Absorberschicht angeordnet ist, auf, der so ausgebildet ist, dass er einen ersten Farbkippeffekt mit einer ersten Farbe in einem ersten Betrachtungswinkelbereich und einer anderen, zweiten Farbe in einem zweiten Betrachtungswinkelbereich erzeugt. Die Druckschicht (8) enthält eine Vielzahl von zweiten, unterschiedlichen Pigmenten (12), die einen zweiten Farbkippeffekt dadurch erzeugen, dass sie im ersten Betrachtungswinkelbereich transparent sind und im zweiten Betrachtungswinkelbereich eine Farbe aufweisen.

METHODS OF PRINTING DOCUMENT MARKINGS WITH ENHANCED MOIRÉ EFFECTS, AND DOCUMENTS THAT EXHIBIT SUCH EFFECTS

Absstract of: US20260200259A1

A substrate includes a mark that exhibits an enhanced moiré effect. In some embodiments, the mark includes: a checkered pattern comprising a first set of cells to be printed with a first color and a second set of cells to be printed with a second color; a first set of broken parallel lines of a third color to be printed along edges of the first set of cells and/or the second set of cells; and a set of frame elements of a fourth color, wherein each frame element is positioned to frame one of the two sets of cells.

Methods of Printing Document Markings with Enhanced Visual Effects, and Documents that Exhibit Such Effects

Absstract of: US20260200258A1

Embodiments disclosed include a monochromatic pattern mark that includes multiple sets of pattern ink segments that cause a substrate to exhibit an enhanced moiré effect. A first set of the pattern ink segments includes a solid center line that is black; a first outer line that is dashed, grey, and adjacent to a first side of the center line; and a second outer line that is dashed, grey, and adjacent to a second side of the center line. Each of the first and second outer lines has a color value of less than approximately 100% K. In other embodiments, the mark may or may not be monochromatic, but it also functions as a correlation mark.

Optisch variables Sicherheitselement, Wertdokument und Herstellungsverfahren

Absstract of: DE102025101526A1

Es ist ein optisch variables Sicherheitselement zur Absicherung von Sicherheitspapieren, Wertdokumenten und anderen Wertgegenständen offenbart, das einen Substratkörper (2), der eine Vorderseite (4) und eine Rückseite (6) hat, und eine Druckschicht (8) aufweist, die auf die Vorderseite (4) des Substratkörpers (2) aufgebracht ist und erste Pigmente (10) und zweite Pigmente (12) enthält. Die ersten Pigmente (10) weisen vernetzte, cholesterische Flüssigkristalle auf, erzeugen eine erste Farbe in einem ersten Betrachtungsrichtungswinkelbereich und sind in einem zweiten Betrachtungswinkelbereich transparent. Die zweiten Pigmente (12) weisen vernetzte, cholesterische Flüssigkristalle auf, erzeugen eine zweite, andere Farbe im zweiten Betrachtungswinkelbereich und sind im ersten Betrachtungswinkelbereich transparent, sodass die ersten Pigmente (10) und die zweiten Pigmente (12) in Kombination einen Farbkippeffekt erzeugen, und unter der Druckschicht (8) ist ein lichtabsorbierender Untergrund vorgesehen.

UV-VIS CURABLE SECURITY INKS COMPRISING TAGS AND SECURITY FEATURES OBTAINED THEREOF

Absstract of: TW202528493A

The present invention relates to the technical field of security features comprising taggants by means of Surface-Enhanced Raman Spectroscopy (SERS) and their detection. Furthermore, the present invention relates to the field of UV-Vis curable security inks comprising SERS tags for printing security features on substrates, in particular on security documents or articles, wherein said inks comprise (i) one or more surface enhanced Raman spectroscopy (SERS) tags, (ii) one or more vinyl ether containing compounds, (iii) one or more cationically radiation curable compounds different from the one or more vinyl ether containing compounds of (ii) and (iv) one or more cationic photoinitiators being a salt of hexafluorophosphate.

UV-VIS CURABLE SECURITY INKS COMPRISING TAGS AND SECURITY FEATURES OBTAINED THEREOF

Absstract of: WO2025051658A1

The present invention relates to the technical field of security features comprising taggants by means of Surface-Enhanced Raman Spectroscopy (SERS) and their detection. Furthermore, the present invention relates to the field of UV-Vis curable security inks comprising SERS tags for printing security features on substrates, in particular on security documents or articles, wherein said inks comprise one or more surface enhanced Raman spectroscopy (SERS) tags, one or more radiation curable compounds, and one or more photoinitiators and wherein said inks lack a vinyl ether containing compound.

SECURITY DOCUMENT AND SYSTEM FOR CHECKING THE SECURITY DOCUMENT

Absstract of: WO2025052155A1

A security document (1) having a transparent window (2) comprising UV fluorescent inks (3, 3 ') and UV absorbing ink (4), characterised by that the UV absorbing ink (4) is positioned in a part of the transparent window (2), the first UV fluorescent ink (3) being positioned between the surface of the first side (A) of the transparent window (2) and the UV absorbing ink (4), the second UV fluorescent ink (3' ) is positioned between the surface of the second side (B) of the transparent window (2) and the UV absorbing ink (4) in such a way that the first and second UV fluorescent inks (3, 3' ) are positioned opposite each other on the part of the transparent window (2) not covered by the UV absorbing ink (4), and another part of the first and second UV fluorescent inks (3, 3' ) are positioned opposite each other on the part covered by the UV absorbing ink (4).

SECURITY DEVICE WITH ENHANCED MACHINE READABILITY AND METHOD OF MANUFACTURING IT

Absstract of: WO2026148229A1

A micro-optic security device (200) includes an optical spacer layer (210, 305) comprising a first side and a second side, an array of focusing elements (205, 310), an array of image icons (220, 319a-319c), wherein the image icons comprise colored regions of cured resin, which when viewed with or through focusing elements of the array of focusing elements, project a synthetically magnified image and a machine-readable component (330), wherein the machine-readable component exhibits a signature variation in infrared (IR) transparency or reflection which varies according to wavelength through the near-infrared region of the electromagnetic spectrum.

Physical Security and Authentication Systems Using Quantum Signatures

Absstract of: US20260194607A1

Physical identification tags are provided that contain patterns of magnetized and non-magnetized nanoparticles embedded in a matrix. The magnetic nanoparticles form a spatially unique magnetic field distribution that is detectable only with the use of a quantum scanning magnetometer with nanometer resolution. The invisible magnetic field pattern is randomly generated by the mixture of magnetic with nonmagnetic nanoparticles and is physically impossible to reproduce. The tags can be used for identification and authentication of articles of commerce, artworks, and subjects.

A printed security feature

Absstract of: AU2026204534A1

A printed security feature Abstract A printed security feature for a security document including a substrate, the security feature 5 comprising: a first functional effect ink printed on a first surface of the substrate, and a second functional effect ink printed on the first and/or a second surface of the substrate, at least partially overlapping the first functional effect ink, wherein the first and the second functional effect inks in combination create an imagery feature which resembles an appearance of a security thread. 10 Abstract un b s t r a c t u n

UV-VIS RADIATION CURABLE COATING COMPOSITIONS COMPRISING MAGNETIC OR MAGNETIZABLE PIGMENT PARTICLES AND METHODS FOR PRODUCING OPTICAL EFFECT LAYERS

Absstract of: WO2025040652A1

The invention relates of UV-Vis radiation curable coating compositions comprising magnetic or magnetizable pigment particles and methods for producing optical effect layers (OELs) comprising magnetically oriented magnetic or magnetizable pigment particles and the use of said OELs as anti-counterfeit means on security documents or security articles as well as decorative purposes. The UV-Vis radiation curable coating compositions comprises one or more (meth)acrylate monomers, one or more cyclic ether compounds, one or more vinyl ether compounds, one or more photoinitiators, one or more thermoplastic polymers and non-spherical magnetic or magnetisable pigment particles.

ANTI-COUNTERFEITING DIGITAL INVISIBLE INK AND APPLICATION THEREOF

Absstract of: WO2026129652A1

Disclosed are an anti-counterfeiting digital invisible ink and application thereof. The anti-counterfeiting label provided by the present invention is prepared by printing the anti-counterfeiting digital invisible ink on a label followed by heating and drying, wherein the raw material components of the anti-counterfeiting digital invisible ink comprise, in parts by mass: 10-40 parts of an invisible anti-counterfeiting agent, 0.3-3 parts of a polymer, 0.05-1 part of a stabilizer, 5-30 parts of a solvent, and 0.05-5 parts of an auxiliary agent, wherein the invisible anti-counterfeiting agent is selected from one of an invisible anti-counterfeiting core-structured substance and core-shell composite particles; in the present invention, the anti-counterfeiting digital invisible ink is obtained by mixing and stirring the raw material components followed by dispersion treatment. Compared with the prior art, the anti-counterfeiting label prepared in the present invention has the advantage of excellent invisibility, and the anti-counterfeiting digital invisible ink used therein has the advantages of high stability and good weathering resistance.

METHOD FOR PRODUCING A LUMINESCENT INORGANIC MATERIAL AND LUMINESCENT INORGANIC MATERIAL PRODUCED USING THE METHOD

Absstract of: WO2026132629A1

The present invention relates to a method for producing a luminescent inorganic material based on an oxyfluoride matrix doped with multiple combinations of rare-earth ions (ytterbium (Yb), erbium (Er), thulium (Tm), europium (Eu) and neodymium (Nd)), and which contains micro- and nanostructured phases obtained using a thermal treatment. Advantageously, the material obtained using the method of the present invention generates a luminescence pattern with simultaneous emission in the near infrared spectrum and in the visible spectrum under 980 nm infrared excitation, which enables the material to be used in anti-counterfeiting security devices, such as security inks for printing textiles, paper money or printed circuits, among others.

SPECIAL PLASTIC FILM FOR THE PRODUCTION OF SECURITY DOCUMENTS

Absstract of: US20260166860A1

0000 Provided is a security document (A) having a first outer surface (AS1) and a second outer surface (AS2) opposite the first outer surface (AS1) comprising at least: (A1) a first polymer film (A1), (A2) a second polymer film (A2), (A3) optionally at least one further polymer film (A3), (A4) a security feature (A4), (A5) optionally fibres, in particular structural fibres, wherein at least one of the polymer films selected from the group consisting of the first polymer film (A1), the second polymer film (A2), optionally the at least one further polymer film (A3) or a combination of at least two of these comprises a thermoplastic elastomer (TPE) or consists of at least one TPE and forms at least one of the outer surfaces (AS1) or (AS2) and to a process for producing such a security document and to the use thereof.

ANTI-COUNTERFEITING ELEMENT AND ANTI-COUNTERFEITING PRODUCT

Absstract of: US20260166909A1

Disclosed are an anti-counterfeiting element and an anti-counterfeiting product. The anti-counterfeiting element comprises: a substrate (1), the substrate comprising a first surface and a second surface opposite to each other; a microlens array layer (2), the microlens array layer being located on the first surface of the substrate; a micrographic array layer (3), the micrographic array layer being located on the second surface of the substrate, a side surface of the micrographic array layer far away from the substrate comprising at least micrographic areas and micrographic background areas, there being multiple micrographic areas and multiple micrographic background areas, and the areas being alternately arranged; a second color layer (6), the second color layer being located on the side surface of the micrographic array layer far away from the substrate; and first color layers (4), the first color layers being located between the micrographic array layer and the second color layer, there being multiple first color layers, and the multiple first color layers being in one-to-one correspondence with the multiple micrographic areas, wherein one of the first color layer and the second color layer is a metal plating layer and the other is an interference light variable layer. The problem of poor anti-counterfeiting performance of anti-counterfeiting elements in the prior art is solved.

SECURITY ELEMENT WITH LIGHT SCATTERING ELEMENT

Absstract of: EP4506182A1

A data carrier (1) for a secure article (10) extends along an extension direction (E) and along a transverse direction (T) extending perpendicularly to the extension direction (E) and comprises at least one light guiding element (2) and at least one security element (3). The light guiding element (2) is configured to guide light such that light illuminating the light guiding element (2) is guided along the light guiding element (2). The light guiding element (2) and the security element (3) are arranged such, that light being guided along the light guiding element (2) is illuminating the security element (3). The security element (3) comprises or consists of at least one light scattering element (4) being configured to scatter light upon an illumination with light by the light guiding element (2).

PERSONALIZED METAL CARD

Absstract of: WO2026120040A1

The invention relates to a metal card (1) comprising: a metal substrate (2), a coating (10) deposited on one face of the substrate and comprising: a first stack (12) covering an area and comprising a coat of ink (13), and a second stack (15) covering another area and comprising a coat of varnish (17) and optionally a coat of black ink (16), the first and second stacks being placed side by side, the coating forming a pattern comprising: a first portion (22) comprising the first stack and having a first color, a second portion (24) comprising the second stack and having a second color, and a third portion (26) formed by a third area of the first face of the substrate and having a third color, the first, second and third colors being in contrast with one another. The card may comprise a third stack (18).

DENDRITE FORMATION FOR SECURE TAGGING USING MULTI-FLUID SYSTEMS

Absstract of: US20260158813A1

0000 Forming a unique stochastically branching pattern includes providing a first fluid between a surface of a first substrate and a surface of a second substrate and introducing a second fluid between the surface of the first substrate and the surface of the second substrate. The second fluid is in direct contact with the first fluid at a formation temperature, and a viscosity of the first fluid at the formation temperature exceeds a viscosity of the second fluid at the formation temperature. The first substrate and the second substrate are separated to yield a unique stochastically branching pattern comprising the first fluid on the surface of the first substrate.

INKJET PRINTING WITH USE OF SPECIALTY INKS

Absstract of: EP4755648A1

0001 A method of printing on a print medium by an inkjet printer, the method comprising the steps of receiving a print job of a digital image to be printed on the print medium, receiving an identification of at least one part of the digital image to be printed on a corresponding part of the print medium for which a specialty ink is intended to be deposited which specialty ink is not available in the inkjet printer, printing the digital image together with a plurality of spaced apart, out-of-plane structures at the corresponding part of the print medium, applying an excess of the specialty ink to the printed structures, wiping off superfluous specialty ink so that the specialty ink only remains in-between the printed structures; and drying the printed medium.

UV-LED CURABLE VISCOUS PRINTING INKS AND PRINTING PROCESSES

Absstract of: WO2025027017A1

The present invention relates to the field of viscous UV-LED radically curable inks for printing security features on substrates, in particular security documents, said inks comprising one or more radically curable (meth)acrylate compounds, one or more thioxanthone compounds, one or more amino containing synergists, one or more fillers and/or extenders, and one or more pigments of formula (I).

ASYMMETRIC PIGMENT

Absstract of: 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

Absstract of: 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.

TRANSITION METAL DICHALCOGENIDE QUANTUM DOTS AND METHODS FOR PRODUCING THE SAME

Nº publicación: WO2026107553A1 28/05/2026

Applicant:

NEWSOUTH INNOVATIONS PTY LTD [AU]
NEWSOUTH INNOVATIONS PTY LIMITED

Absstract of: 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.