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40
results.
Updated on
20/08/2025 [07:23:00]
Absstract of: WO2025167036A1
The present invention provides a preparation method for an anti-sedimentation, inorganic-pigment, color-variable, anti-counterfeiting printing ink. The method comprises: first, using fillers and a pigment to prepare slurries separately, and controlling particle sizes of the fillers to create particle size mismatch among three fillers; while mixing the slurries with a partial amount of a polyvinyl butyral slurry, allowing the particle-size-mismatched fillers to be fully encapsulated by resin to form a well-suspended mixed slurry; then, performing low-speed grinding of the mixed slurry together with organic bentonite to further improve the suspension performance of the mixed slurry; on this basis, adding and dispersing an acrylic acid slurry and thermochromic capsules to further encapsulate the pigment and the fillers by the resin; and finally, using the remaining polyvinyl butyral slurry and additives to adjust the formulation, so as to increase the viscosity of the material. The resulting anti-counterfeiting ink maintains high anti-counterfeiting performance while exhibiting minimal sedimentation after prolonged storage and demonstrates good usability.
Absstract of: US2025256200A1
Documents (such as but not limited to lottery tickets), systems for manufacturing documents (such as but not limited to lottery tickets), and methods for manufacturing documents (such as but not limited to lottery tickets), wherein the document (such as an instant lottery ticket) that has a consistent overprint that covers both a SOC area and a display area of the document, and that thus provides a consistent application and appearance of the overprint despite the differences in the ink chemistry and texture of the SOC area and the display area surfaces of the document that underly the overprint. The overprint can include artwork including one or more images (such as but not limited to patterns).
Absstract of: WO2025168440A1
The invention provides a novel security feature and a method for making it.
Absstract of: WO2025168507A1
The invention provides a novel security feature and a method for making it.
Absstract of: WO2025168506A1
The invention provides a novel security feature and a method for making it 3b.
Absstract of: DE102024103599A1
Sicherheitselement zur Absicherung von Wertdokumenten, das einen Substratkörper (2), mit ersten Rasterflächen (8), die aus ersten Teilrasterflächen (4) und zweiten, farblich unterschiedlichen Teilrasterflächen (6) aufgebaut sind, und zweiten Rasterflächen. Die ersten Teilrasterflächen (4) und die zweiten Teilrasterflächen (6) sind mit dem unbewaffneten Auge nicht unterscheidbar und ergeben gemeinsam eine Mischfarbe. Die ersten Rasterflächen (8) oder die zweiten Rasterflächen (10) sind aus Lumineszenzfarben gebildet, bei Beleuchtung mit UV-Strahlung erkennbar und bei Beleuchtung nur mit Licht aus dem sichtbaren Spektrum transparent, und die jeweils anderen Rasterflächen (8, 10) sind aus Körperfarben gebildet. Unter mindestens einem Winkel zur Vorderseite erscheinen die zweiten Rasterflächen (10) in nur teilweiser Überlappung der ersten Rasterflächen (8), wobei zwischen den zweiten Rasterflächen (10) und den ersten Teilrasterflächen (4) und den zweiten Teilrasterflächen (6) jeweils ein Grad der Überlappung im Bereich von 0% bis 100% gegeben ist, und das Sicherheitselement mindestens zwei Bereiche aufweist, in denen sich der Grad der Überlappung zwischen den zweiten Rasterflächen (10) und den ersten Teilrasterflächen (4) vom Grad der Überlappung zwischen den zweiten Rasterflächen (10) und den zweiten Teilrasterflächen (6) unterscheidet. Bei Beleuchtung mit einer Kombination aus UV-Strahlung und Licht aus dem sichtbaren Spektrum, ist die Mischfarbe in den
Absstract of: EP4600315A2
The present invention describes a water wipe security intaglio printing ink composition comprising as a principal component bio-renewable iso-alkane vegetable oil-based solvent, which in combination with other constituents produces a mineral oil-free ink with improved sustainability and environmental impact footprint when compared to existing formulations designed for the same application.
Absstract of: WO2024074174A1
The invention relates to a security foil element (12) for securing valuable objects (10), having a foil carrier (20) and a selection layer (24) applied to at least some portions of the foil carrier. The foil carrier (20) is formed from an extrudable plastic and in its volume is mixed with a machine-readable luminescent marker (22), which is used to emit luminescent radiation having a first wavelength and a second, different, wavelength (32, 34), each in the infrared spectral range. The selection layer (24) is designed to selectively spectrally inhibit the transmission of IR radiation, wherein the inhibiting effect on transmission differs for the first and second wavelengths (32, 34) by at least 10 percentage points.
Absstract of: EP4600047A2
A method for detecting a component including a concealed pattern includes: detecting infrared electromagnetic radiation reflected or emitted by a component including a first pattern, the component including: a substrate; the first pattern disposed over at least a portion of the substrate; an optional primer layer disposed between at least a portion of the substrate and at least a portion of the first pattern; and a first visibly opaque layer including an infrared transparent pigment, the first visibly opaque layer disposed over at least a portion of the first pattern; and comparing the reflectivity and/or absorbance of infrared electromagnetic radiation by the first pattern at one wavelength to the reflectivity and/or absorbance by the primer layer and/or the substrate at the same wavelength.
Absstract of: WO2025165248A1
The invention relates to a security graphic element applied to part or all of a substrate that is opaque or transparent in visible light, the element comprising at least one printed area of a first type (2a, 3a) having a layer of a first ink applied thereon, and at least one printed area of a second type (2b, 3b) having a layer of a second ink applied thereon, the layer of the first ink and the layer of the second ink containing, either the same or a different, at least one iridescent pigment, and furthermore, the layer of the second ink contains at least one IR absorbing agent.
Absstract of: GB2637883A
A printed security feature 200 for a security document 100 including a substrate. The security feature comprises a first functional effect ink 201 printed on a first surface 203b of the substrate; and a second functional effect ink 202 printed on the first and/or a second surface 203a, 203b of the substrate, at least partially overlapping the first functional effect ink. The security feature displays a repetitive pattern of images, icons, numbers and/or texts. At least one of the first functional effect ink and the second functional effect ink may include a colour switching ink, which displays a variable colour appearance when a viewing condition and/or a viewing angle changes. At least one of the first functional effect ink and the second functional effect ink may include an ink comprising metallic ink particles, which create a metallic appearance. The first and second functional effect inks may include fluorescent, luminescent, phosphorescent, photochromic, thermochromic, hydrochromic, or piezochromic ink. The first and second functional effect inks in combination create an imagery appearance of a security thread. The security feature may comprise a non-functional effect ink.
Absstract of: PL447634A1
Przedmiotem zgłoszenia jest zabezpieczający element graficzny, naniesiony na części lub na całości nieprzezroczystego lub transparentnego w świetle widzialnym podłoża, zawierający co najmniej jeden zadrukowany obszar pierwszego rodzaju (2a, 3a), na którym naniesiona jest warstwa pierwszej farby oraz co najmniej jeden zadrukowany obszar drugiego rodzaju (2b, 3b), na którym naniesiona jest warstwa drugiej farby, przy czym warstwa pierwszej farby i warstwa drugiej farby zawierają, taki sam lub inny, co najmniej jeden pigment irydyscentny, a ponadto warstwa drugiej farby zawiera co najmniej jeden środek absorbujący promieniowanie IR. Przedmiotem zgłoszenia jest również nośnik danych oraz sposób wytwarzania nośnika danych.
Absstract of: US2025242629A1
Disclosed are a magnetic particle and a security ink containing the same. The magnetic particle includes a magnetic core, and a metal coating layer formed outside the magnetic core. The magnetic particle has a surface roughness (Ra) of 0.15 μm or less. The magnetic particle according to the present invention is suitable for application to a security ink because an abnormal increase in particle size does not occur after the metal coating layer is formed.
Absstract of: AU2024256756A1
The invention relates to a machine-recognizable biodegradable, polymeric value-document substrate, comprising a polymeric composite substrate based at least substantially on renewable resources, and at least one machine-recognizable characteristic substance embedded in the composite substrate, wherein the machine-recognizable characteristic substance has a characteristic luminescence emission upon excitation with light having a suitable wavelength, in particular upon excitation with light in the UV-wavelength range or IR-wavelength range.
Absstract of: WO2024061899A2
The invention relates to a method for producing a security feature on a carrier substrate for value or security documents, which security feature absorbs in the infrared range and is at least substantially transparent and/or not visible in the visible spectral range, wherein, in the method, IR-absorbing colourants are mixed with a binder and/or solvent to produce a colourant dispersion or solution and this is applied to the carrier substrate, wherein the carrier substrate is an organic substrate containing carbonate groups (-O-C(=O)- O-) and the IR absorbing colourants are dyes or pigments selected from the group of organometallic pigments, perylene derivatives, dithio dyes, dithiolene dyes, cyanines and phthalocyanines.
Absstract of: WO2024061899A2
The invention relates to a method for producing a security feature on a carrier substrate for value or security documents, which security feature absorbs in the infrared range and is at least substantially transparent and/or not visible in the visible spectral range, wherein, in the method, IR-absorbing colourants are mixed with a binder and/or solvent to produce a colourant dispersion or solution and this is applied to the carrier substrate, wherein the carrier substrate is an organic substrate containing carbonate groups (-O-C(=O)- O-) and the IR absorbing colourants are dyes or pigments selected from the group of organometallic pigments, perylene derivatives, dithio dyes, dithiolene dyes, cyanines and phthalocyanines.
Absstract of: WO2024018226A1
A security or identification system including the application of two or more marker portions or stripes (4a-4d) that include one or more compounds or mixture of compounds that fluoresce under exposure to electromagnetic radiation. The marker portions emit light at different wavelengths to each other when exposed to said electromagnetic radiation.
Absstract of: US2025239186A1
A scratch-off coating is provided which includes a first layer of ink comprised of a water-based ink; and a second layer of ink comprised of an ultraviolet-cured ink layered over said first layer of ink, wherein upon application of a scratching force said first layer of ink and said second layer of ink are removable from a surface on which said first layer of ink and said second layer of ink are applied.
Absstract of: AU2025205090A1
A security device made up of a security film (130) having (i) an array of image elements (103); (ii) an array of focusing elements (106); and (iii) at least one anti-viscid agent (115), is provided. The array of focusing elements and the array of image elements are disposed relative to each other such that a synthetic image is projected by the security film when at 5 least a portion of the array of image elements are viewed through at least a portion of the array of focusing elements. The anti-viscid agent is coupled with the array of focusing elements. A security device made up of a security film (130) having (i) an array of image elements (103); (ii) an array of focusing elements (106); and (iii) at least one anti-viscid agent (115), is provided. The array of focusing elements and the array of image elements are disposed 5 relative to each other such that a synthetic image is projected by the security film when at least a portion of the array of image elements are viewed through at least a portion of the array of focusing elements. The anti-viscid agent is coupled with the array of focusing elements. ul u l s e c u r i t y d e v i c e m a d e u p o f a s e c u r i t y f i l m ( ) h a v i n g ( i ) a n a r r a y o f i m a g e e l e m e n t s ( ) ; ( i i ) a n a r r a y o f f o c u s i n g e l e m e n t s ( ) ; a n d ( i i i ) a t l e a s t o n e a n t i - v i s c i d a g e n t ( ) , i s p r o v i d e d h e a r r a y o f f o c u s i n g e l e m e n t s a n d t h e a r r a y o
Absstract of: US2025239122A1
The present invention relates to a method for clearly marking and a method for identifying physical objects, a method for offline verification of a physical object, a method for hybrid offline and online verification of a physical object, a method for expanding the marking by further unique codes, a physical object having an optical security feature for clearly marking and identifying, a serialization and/or track & trace system based on an optical security feature such as this, and the use of an optical security feature such as this in a serialization and/or track & trace system and/or for object authentication, for offline verification and/or hybrid offline and online verification of a physical object and in a method for expanding the marking by further unique codes.
Absstract of: WO2025153827A1
Method of preparing tamper-evident packaging and a customisable tape (12, 22) for preparing tamper-evident packaging. The method comprises applying the tape to a packaging container (10), wherein the tape comprises a laser-imageable layer (220, 125, 330, 340, 230) and an adhesive layer (220, 225, 230, 240), and wherein the laser-imageable layer is formed within or adjacent to the adhesive layer. An image (13, 23) is created in the laser-imageable layer by irradiation with a laser before or after the application of the tape to the container. The tape is configured such that the image is at least partially transferred onto the container following application and the transferred image (16, 26) remains on the packaging container if a substrate (120, 125, 130, 140) of the tape, having the non-transferred part (15) of the image, is removed. A hidden release layer (440, 430) can be provided.
Absstract of: WO2025149133A1
The invention relates to a method for producing a micro-optical display arrangement, which has a coloured motif layer (26) arranged in a motif plane and has a plurality of multi-coloured micro-motif elements (28-1, 28-2) and a focusing element grid (24) made of a plurality of micro-focusing elements for viewing the micro-motif elements (28-1, 28-2), wherein in the method for producing the coloured motif layer (26) - a coloured layer (200; 204; 212) that is light-sensitive at least in some regions is arranged in the motif plane and is exposed to exposure radiation (B1; B2; B) through the focusing element grid (24) and is <b>thereby</b> modified in the exposed regions (202; 206; 218). The solubility of the light-sensitive layer (e.g. photoresist) can be changed and then removed in regions. The laser radiation can remove regions of the light-sensitive layer or change its colour, reflection and/or transmission properties. The motif layer can have recesses (34, 36) of different depths that can be filled with two different colours (40, 42).
Absstract of: US2025229566A1
A personalizable security document includes a combination of two secure features, namely, a laser-engravable material, and a hologram overlapping the laser-engravable material. The metallic properties of the laser-engravable material result in an enhancement of the holographic effect obtained from the hologram. Additionally, the hologram may extend to other portions of the security document in a continuous manner, for example, as a full-page hologram. This may connect the secondary image formed in the laser-engravable material with other features provided in different portions of the security document to further increase the security.
Absstract of: US2025229563A1
In a general aspect, unique unclonable physical identifiers are applied and used. A method of applying the unique marker can include receiving an object having a surface feature and forming a unique marker on the surface feature of the object. The unique marker includes a distribution of elements and conforms with a morphology of the surface feature. The method further includes extracting orientation information from the unique marker. The orientation information can indicate relative spatial orientations of the respective elements. The method additionally includes generating a unique code for the object based on the orientation information. The surface feature can be facets, surface patterns, textures, or other indentations of the object. The surface feature can include a region of the object that is susceptible to tampering.
Nº publicación: DE102024100948A1 17/07/2025
Applicant:
GIESECKE DEVRIENT CURRENCY TECH GMBH [DE]
Giesecke+Devrient Currency Technology GmbH
Absstract of: DE102024100948A1
Die Erfindung betrifft ein Verfahren zum Erzeugen einer mikrooptischen Darstellungsanordnung, die eine in einer Motivebene angeordnete farbige Motivschicht (26) mit einer Mehrzahl von verschiedenfarbigen Mikromotivelementen (28-1, 28-2) und ein Fokussierelementraster (24) aus einer Mehrzahl von Mikrofokussierelementen zur Betrachtung der Mikromotivelemente (28-1, 28-2) aufweist, wobei bei dem Verfahren zur Herstellung der farbigen Motivschicht (26)- in der Motivebene eine zumindest bereichsweise lichtempfindliche, farbige Schicht (200; 204; 212) angeordnet wird und- die lichtempfindliche Schicht (200; 204; 212) durch das Fokussierelementraster (24) hindurch mit Belichtungsstrahlung (B1; B2; B) beaufschlagt und dadurch in den beaufschlagten Bereichen (202; 206; 218) modifiziert wird.
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