Resumen de: WO2025142741A1
Provided is a display technique that enables special image display. This display body (1A) comprises: a transparent material layer (2) having a first main surface (S1) and a second main surface (S2); a mask layer (3) provided on the first main surface and having light transmission portions (32) regularly arranged; and an image display layer provided on the second main surface. The image display layer includes a first layer (4B) for displaying a first color, and a second layer (4R) for displaying a second color different from the first color. The first layer includes first portions (41B) arranged, in one arrangement direction of the light transmission portions, at the same pitch as the pitch of the light transmission portions in the one arrangement direction. The second layer includes second portions (41R) arranged alternately with the first portions in the aforementioned arrangement direction. The first and second portions each include a first region which can be observed through one of the light transmission portions when observed from a normal direction perpendicular to the first main surface, and a second region which cannot be observed through any of the light transmission portions when observed from the normal direction.
Resumen de: CN119768284A
A security ink composition comprising at least one non-luminescent undoped Y3Fe5-xMxO12 based pigment wherein x satisfies the condition 0 < = x < = 1.25; m is selected from the group consisting of aluminum, gallium or calcium and mixtures thereof; and wherein upon drying and/or curing, at least one machine-readable security feature derived from the application of the security ink composition, preferably printing, has a comprehensive susceptibility of at least about 200 x 10-12 m3, and exhibits ferromagnetic resonance (FMR) characteristics for authentication purposes. A method for authenticating a machine-readable security feature derived from a security ink composition.
Resumen de: EP4579009A1
The present invention relates to fibers for verifying fabric authenticity, which exhibit the functionality of verifying fabric authenticity by mixing a special pigment with fibers, and a system for verifying fabric authenticity by using the fibers. The fibers for verifying fabric authenticity of the present invention, which comprise an infrared light-emitting body, are included inside yarn or fabric to provide an effect of verifying authenticity or preventing forgery. For example, analysis for authenticity identification is complicated and impossible for certain functional products after fabric manufacture, but the fabric authenticity verification fibers of the present invention enable rapid and accurate authenticity identification.
Resumen de: FR3157592A1
L’invention a pour objet un dispositif d’authentification (1) d’un véhicule d’information (2) configuré pour encapsuler au moins une donnée relative à un produit ou une personne, le dispositif d’authentification (1) comprenant une zone, dite zone d’authentification (4), la zone d’authentification (4) comprenant au moins une couche (7) munie dudit véhicule d’information (2) et un élément optiquement variable (6) présentant une variation entre une première apparence et une deuxième apparence de sorte que, dans un premier état, la zone d’authentification (4) et/ou le véhicule d’information (2) présente la première apparence et que, dans un deuxième état, la zone d’authentification (4) et/ou le véhicule d’information (2) présente la deuxième apparence, un basculement entre la première apparence et la deuxième apparence étant effectué par une variation selon l’angle de vue, d’éclairage ou un stimulus physico-chimique. . Figure de l’abrégé : Figure 1
Resumen de: FR3157268A1
L’invention concerne un élément de sécurité (2) pour un document de sécurité, l’élément de sécurité (2) étant multicouche et comportant une face supérieure (12) et une face inférieure (13) entre lesquelles sont superposées dans cet ordre, de la face supérieure (12) à la face inférieure (13) : - une couche translucide d’encre colorée (15), - une couche de support (17) au moins partiellement, de préférence totalement, transparente ou translucide, - une couche de microstructures en relief à réflexion variable (19) de sorte à définir un effet optique variable en fonction de l’angle d’observation et/ou d’illumination depuis la face supérieure (12), et - une couche (21) comportant des particules plasmoniques, de préférence une couche (21) d’encre plasmonique. L’invention concerne également un document de sécurité comportant au moins un tel élément de sécurité (2). Figure pour l’abrégé : Fig. 2
Resumen de: US2025208566A1
A system for generating variable optical images in curable material using generic optical matrices, the system including an applicator configured to apply the curable material to a portion of a substrate supported by a carrier web; a transparent roller comprising surface elements formed on an outside surface of the transparent roller, the transparent roller being configured to form optical structures in the curable material, wherein the surface elements on the transparent roller form the optical structures in the curable material when the surface elements contact the curable material as the substrate travels over the outside surface of the transparent roller; a radiation source within or outside the transparent roller configured to cure the curable material after the optical structures are formed in the curable material; and an image generation component configured to obliterate portions of the optical structures to form a predetermined image.
Resumen de: WO2025133332A1
The invention relates to a security element (2) for a security document, the security element (2) being multilayer and comprising an upper face (12) and a lower face (13) between which faces there are superposed, in this order, from the upper face (12) to the lower face (13): - a translucent layer of coloured ink (15), - an at least partially, preferably totally, transparent or translucent backing layer (17), - a relief-structures layer (19) exhibiting variable reflection so as to define an optical effect that varies according to the angle at which it is viewed and/or illuminated from the upper face (12), and - a layer (21) comprising plasmonic particles, preferably a layer (21) of plasmonic ink. The invention also relates to a security document comprising at least one such security element (2).
Resumen de: WO2025133544A1
The invention relates to an authentication device (1) for an information carrier (2) configured to encapsulate at least one datum relating to a product or a person, wherein the authentication device (1) comprises a zone, referred to as the authentication zone (4), wherein the authentication zone (4) comprises at least one layer (7) provided with the information carrier (2) and an optically variable element (6) that displays a variation between a first appearance and a second appearance such that, in a first state, the authentication zone (4) and/or the information carrier (2) displays the first appearance and, in a second state, the authentication zone (4) and/or the information carrier (2) displays the second appearance, wherein the transition between the first appearance and the second appearance is caused by a variation in the viewing angle, or the lighting, or a physico-chemical stimulus.
Resumen de: WO2025129444A1
The present technology relates to the field of improved opacified polymeric transparent substrates (x00) for use in making security documents such as banknotes, said substrates (x00) combining good mechanical performance and that can be easily handled for subsequent multi-step security printing processes. In particular, kits are provided for manufacturing an opacifying system (x10) either on one side or on both sides of a polymeric transparent substrate (xx0) , said kit comprising a) a first composition for manufacturing an opacifying layer (x11) , b) a second composition for manufacturing a conductive layer (x12) , and c) a third layer composition for manufacturing an acceptance layer (x13) , wherein the first, second and third compositions comprises i) water, ii) a water-soluble or water-dispersible resin, iii) a white pigment, iv) a wax, wherein at least one of the first, second and third compositions comprises an anti-static agent, and wherein at least two of said first, second and third compositions comprise a mica compound.
Resumen de: EP4574442A2
A method of manufacturing a security document is provided, comprising: providing a polymer substrate having first and second surfaces in the form of a web; and in any order: (c) applying at least one opacifying layer to the first and/or second surfaces of the polymer substrate in the form of a web, the or each opacifying layer comprising a non-transparent material; and optionally either: (a) applying an array of focussing elements to the first surface of the polymer substrate in the form of a web across a first region; or (b) applying an image array to the polymer substrate in the form of a web in the first region, such that the image array is located in a plane spaced from the array of focussing elements by a distance substantially equal to the focal length of the focussing elements whereby the focussing elements exhibit a substantially focussed image of the image array; and then (q) cutting the web into sheets in the direction of web transit, then performing on the sheets whichever of steps (a) and/or (b) was not performed on the web, in at least one sheet-fed process; such that either the image array is located between the array of focussing elements and the at least one opacifying layer on the first surface of the substrate, or at least the opacifying layer(s) on the first surface of the substrate define a gap forming a window region in which at least part of the array of focussing elements is disposed such that a substantially focussed image of at least part of the image
Resumen de: EP4574438A1
A micro-optic security device (105) includes a planar array of microlenses (305), which are configured to focus light along a plurality of focal paths (610) associated with a viewing angle. The micro-optic security device further includes an icon layer stack (905) disposed along the plurality of focal paths. The icon layer stack includes a first icon layer (620) with volumes of cured material of a first color (613b) and volumes of substantially transparent material at locations outside of focal paths of the first range of viewing angles. The icon layer stack also includes a second icon layer (640) with volumes of substantially transparent cured material at locations along focal paths of the first range of viewing angles, and volumes of cured material of a second color (637a) at locations along focal paths of a second range of viewing angles.
Resumen de: WO2024156314A1
The invention relates to a data carrier (10), in particular a value or security document, having a substrate (20) which comprises at least one transparent plastics layer and two opposing main surfaces. The data carrier additionally contains two opaque-white layers (22, 32) having a white, opaque appearance, which are applied to the opposing main surfaces of the substrate (20). Each of the opaque-white layers (22, 32) consists of a layer sequence of two or more partial layers (24a-c, 34a-c) extending from a lowermost white layer (24a, 34a) to an uppermost white layer (24c, 34c). The data carrier also contains a machine-readable security feature which comprises a machine-readable feature substance (38) which is present in at least one of the partial layers (24c) of at least one of the opaque-white layers (22, 32).
Resumen de: US2025201047A1
A method for producing value documents and a sensor system for quality control during the production of value documents, wherein a first optical radiation emanating from a first semi-finished product is captured with a first sensitivity and a first resolution and is tested on the basis of a first test criterion. If the first test criterion is satisfied, the following steps are carried out: introducing and/or applying at least one feature substance into and/or onto the first semifinished product, wherein a value document or a second semifinished product is obtained; capturing a second optical radiation emanating from the value document or the second semifinished product with at least one second sensitivity and at least one second resolution; and testing the second optical radiation on the basis of at least one second test criterion.
Resumen de: US2025196525A1
The invention relates to a sealing mark for sealing a package such as for packing medicaments. The sealing mark has a sealing layer and a hologram layer that at least partly covers the sealing layer. The sealing mark further comprises a thermosensitive layer that at least partly covers the hologram layer and/or the sealing layer. The thermosensitive layer includes thermochromic ink. The thermochromic ink is irreversible.
Resumen de: US2025197716A1
Spherical aggregates of semi-crystalline thermoplastic polyester, poly(cyclohexylene dimethylene terephthalate), with a size distribution of between 160 nm and 200 nm fluorescence in the visible spectrum and are deposited on a thermoplastic aromatic polyester substrate or a thermoplastic polyolefin. The aggregates may be used as a physically unclonable label, for identifying and/or tracing packaging for cosmetic products and/or perfumes. Therefore, the aggregates provide a benefit within the field of anti-counterfeit packaging, particularly in the area of anti-counterfeit packaging for cosmetic and/or perfume products.
Resumen de: WO2025127961A1
In a method for creating a digital tag for the security marking of articles, a sequence of dots is applied to an article using a luminescent dye, the resulting tag is exposed to ultraviolet light having a wavelength of 250-400 nm, the tag is read using a digital photographic camera, and the obtained image is processed. For each dot of the tag, a luminescence spectrum is obtained consisting of four bands, each of which is correlated with a whole number from 0 to 255 according to the intensity thereof. Half of the dots form a QR code in a horizontal direction, where the dots are correlated with whole numbers and a green component of an RGB code is produced, and the other half of the dots form the QR code in a vertical direction, with a red component of the RGB code being produced. Upon formation of the coloured QR code, each of the dots thereof is situated at the intersection of two components of the RGB code and contains a colour code, where each component contains from 0 to 255 dots: R is from 0 to 255, G is from 0 to 255, and B is equal to 0. The technical result of the invention consists in providing more reliable protection of a product against counterfeit.
Resumen de: WO2025127952A1
The present invention relates to a data sheet (10) for incorporation into a security document and/or document of value, for example a booklet, comprising a flexible spine layer (1) and at least one first flexible layer (2) and/or a second flexible layer (2a); wherein a portion of said layers (2, 2a) is connected to a portion of the first surface of the flexible spine layer (1), which comprises at least one copolymer selected from the group consisting of a styrene copolymer or an acrylic copolymer. The flexible spine layer (1) exhibits suitable dimensional stability, tensile strength and yield strength for complying with the specifications of security document manufacturing processes based on lamination at high temperatures and pressures. In addition, the flexible spine layer (1) includes level 2 security particles (5), which make the material much safer against counterfeiting and replication.
Resumen de: TW202442814A
The present invention relates to the field of security inks suitable for printing machine readable security features on substrate. security documents or articles as well as machine readable security feature made from said security inks. and security documents comprising a machine readable security feature made from said security inks. In particular. the invention provides security inks comprising one or more IR absorbing materials wherein said security ink allows the production of a machine readable security feature.
Resumen de: EP4572303A1
A method, system and apparatus for rendering a gloss effect on a recording medium, can involve rendering a foreground pattern using a first ink composition comprising infrared absorbing colors, wherein said first ink is lightened with lightening parameters by the addition of paper white holes and rendering a background pattern using a second ink composition comprising a process or spot color, wherein said second ink is darkened with darkening parameters by the addition of infrared absorbing colors that have different amounts of infrared absorbing colors than that of the first ink composition. The lightening parameters and the darkening parameters are adjustable to ensure that the first and second inks appear approximately the same at printed sizes. Anisotropic properties can be introduced to the first and second inks, causing non-uniformity in their reflection of light in different directions when viewed under a light source, thereby creating a gloss effect renderable on a recording medium. An infrared (IR) signal can be embedded within the gloss effect to enable detection of the gloss effect using an IR sensor or an IR device.
Resumen de: WO2025127952A1
The present invention relates to a data sheet (10) for incorporation into a security document and/or document of value, for example a booklet, comprising a flexible spine layer (1) and at least one first flexible layer (2) and/or a second flexible layer (2a); wherein a portion of said layers (2, 2a) is connected to a portion of the first surface of the flexible spine layer (1), which comprises at least one copolymer selected from the group consisting of a styrene copolymer or an acrylic copolymer. The flexible spine layer (1) exhibits suitable dimensional stability, tensile strength and yield strength for complying with the specifications of security document manufacturing processes based on lamination at high temperatures and pressures. In addition, the flexible spine layer (1) includes level 2 security particles (5), which make the material much safer against counterfeiting and replication.
Resumen de: US2025188300A1
The present invention provides a photoluminescent security ink for continuous ink-jet printing, wherein said ink has a viscosity of about 1.5 mPas to about 6 mPas at 25° C., and comprises: a) from about 4 wt-% to about 6 wt-% of uncapped NaX1-y-zF4YbyZz nanoparticles; b) from about 1.5 wt-% to about 10 wt-% of a dispersing agent; c) from about 80 wt-% to about 90 wt-% of an organic solvent; and d) from about 0.1 wt-% to about 1 wt-% of a conductive salt, as well as a process for producing said ink, and a process for manufacturing a photoluminescent security feature on an article, or a value document, with said ink.
Resumen de: US2025187036A1
The invention relates to the field of the protection of security documents such as for example banknotes and identity documents against counterfeit and illegal reproduction. In particular, the present invention provides methods for producing optical effect layers (OELs) exhibiting one or more indicia (×30) on a substrate (×20), said method comprising a step of exposing a coating layer (×10) comprising non-spherical magnetic or magnetizable pigment particles to a magnetic field of a magnetic-field generating device so as to orient at least a part of the magnetic or magnetizable pigment particles; a step of applying a top coating composition on top of the coating layer (×10) and in the form of one or more indicia (×30), and a step of at least partially curing the coating layer (×10) and the one or more indicia (×30) with a curing unit (×50).
Resumen de: US2025187361A1
The invention relates to a data carrier (10) with two different motif images which are visible from opposite faces of the data carrier, namely a front-side motif (22) and a back-side motif (32). According to the invention, it is provided that the data carrier (10) has a multi-layer structure with an upper motif layer (52), a lower motif layer (62) and an intermediate layer (40) arranged between the motif layers (52, 62) and which is at least partially translucent. It is further provided that a partial motif (22A, 22B) of the front-side motif (22) is arranged in the upper and lower motif layers (52, 62) and the two partial motifs (22A, 22B) complement each other to form the front-side motif (22) when the data carrier is viewed from the front and/or respectively one partial motif (32A, 32B) of the back-side motif (32) is arranged in the upper and lower motif layers (52, 62) and the two partial motifs (32A, 32B) complement each other to form the back-side motif when the data carrier is viewed from the back and that the upper and lower motif layers (52, 62) are each formed by a laser-modified printing ink, the motif information of which, produced by laser exposure and forming the front-side motif (22) and the back-side motif (32), is only visible when viewed in reflected light, but not when viewed in transmitted light.
Resumen de: US2025187360A1
The present invention relates to a smart and secure label stock with security features. The present invention relates to a label stock produced from a substrate utilizing adhesive and liner materials and having a plurality of security features on the rear side of the substrate made using specialized inks and various authentication features for different applications.
Resumen de: AU2023374712A1
The invention relates to the field of UV curable security ink compositions comprising rylene-based compounds, radically curable monomers, oligomers or mixtures thereof, and radical photoinitiators. The invention further relates to security features obtained by applying or printing the security ink compositions, articles or documents containing said security features and method of preparing the security features comprising the UV curable security ink compositions.
Resumen de: CN119654240A
The invention relates to a security element (1) for value documents, said security element (1) comprising: an optically variable main surface pattern (2) comprising a metal layer (4) having a relief structure (4a); and at least one hidden secondary surface pattern (3), which comprises a plurality of elements (6) perforated on the metal layer (4) and at least one light-emitting layer (7), which is arranged at least in the region of the secondary surface pattern (3).
Resumen de: US2024048662A1
Systems and methods applicable, for instance, to the generation and usage of authentication images. In one aspect, unauthorized attempts to duplicate authentication images can be thwarted. In another aspect, there can be provision for authorized authentication image generation using low-resolution print devices.
Resumen de: WO2024027882A1
A security element for a value document comprises: a first concealed motif region having a first luminescence layer with at least one first excitation wavelength in the UV-A range; and a second concealed motif region having a second luminescence layer with at least one second excitation wavelength in the UV-A range that is different from the at least one first excitation wavelength.
Resumen de: US2025178370A1
A security system for an article of manufacture includes: one or more first planchettes included in the article of manufacture and configured to luminesce when a first frequency of light is directed to the one or more first planchettes; and one or more second planchettes included in the article of manufacture and configured to luminesce when a second frequency of light is directed to the one or more second planchettes. The first and second planchettes have one or more first planchette substrates each including a first planchette surface having a first UV-reactive microprinting thereon; and one or more second planchette substrates each including a second planchette surface having a second UV-reactive microprinting thereon. The first UV-reactive microprinting is different from the second UV-reactive microprinting.
Resumen de: WO2025116320A1
The present invention relates to a hinge for a security article and a forgery determination method using the same, the hinge including: a fabric woven with a plurality of wefts and a plurality of warps; and a security element containing a fluorescent substance having a light emitting wavelength when irradiated with excitation light. At least a portion of the fabric includes a special yarn, and the security element includes: a first security element including a security yarn included in at least a portion of the plurality of wefts and warps; a second security element including a security pattern located on the fabric; or a combination thereof. Improving both the durability and security of the hinge has the advantages that chemical and physical damage due to the external environment and man-made damage can be prevented, and the area of contact between a security material harmful to the human body and the body of a person possessing the security material can be significantly reduced.
Resumen de: WO2025111658A1
This disclosure relates to a tag comprising an identifier visually representing first information and a mechanism to change the tag from a first state relating to the tag being unaltered where the machine readable identifier is inaccessible to a second state relating to the tag being altered where the machine-readable identifier is accessible. The machine-readable identifier comprises a substance that has a first configuration in the first state of the tag and changes to a second configuration in the second state of the tag. The first information is readable in the first configuration and unreadable in the second configuration.
Resumen de: GB2635891A
A method for the manufacture of an optical security element 3 comprises providing a substrate 10 having diffractive optically active relief 20 formed on or applied to a surface (14, Fig.1) thereof; applying to said surface of the substrate a layer of a composition comprising particles of a material having a refractive index different from the refractive index of the material of the substrate, the composition being applied in the form of a sol; drying the applied sol layer to form a xerogel intermediate layer 30 comprising the said different refractive index material; and applying over the xerogel intermediate layer 30 at least one covering layer 40 for protecting the surface optical relief on the substrate against subsequent mechanical damage. The substrate material may have a refractive index in the range of from about 1.4 to about 1.6. The particles may comprise or are composed of a material with a refractive index in the range of from about 1.6 or 1.7 or 1.8 up to about 2.55 or 2.6. The particles may be composed of or comprise an inorganic material being a metal (e.g. aluminium (Al) or copper (Cu) or a metal oxide (e.g. titanium dioxide (TiO2) nanoparticles).
Resumen de: AU2023368598A1
A composition for anti-counterfeit ink comprising organic-inorganic hybrid infrared absorbing particles and a liquid medium, wherein the organic-inorganic hybrid infrared absorbing particles have 15-55 mass% of infrared absorbing particles and a coating resin that covers at least a portion of the surface of the infrared absorbing particles.
Resumen de: WO2025110158A1
The present invention addresses the problem of providing: an information recording body which can be easily read and deciphered by a typical reading device and for which reproduction or the like is difficult; and a reading device or the like for said information recording body. This information recording body 1 comprises a substrate 2, a bright ink layer 5 formed from bright ink on one surface of the substrate 2, a colored ink layer 3 formed from colored ink, and a transparent ink layer 4 formed from transparent ink. The colored ink layer 3 forms a first pattern 100, and the transparent ink layer 4 forms a second pattern 200. In plan view, at least part of the first pattern 100 and the second pattern 200 overlaps with a region where the bright ink layer 5 is formed. The second pattern 200 includes information that can be converted into a specific code, and in plan view, at least part of the second pattern 200 overlaps with the first pattern 100.
Resumen de: WO2024013693A1
The invention concerns an anti-counterfeiting label comprising: A) a polymeric support, optionally filled with materials in the form of fibres; B) at least three inks deposited on the polymeric support according to a defined deposition sequence; and C) at least one transparent polymeric layer that covers said at least three inks; wherein each ink comprises: (i) at least one active material detectable by Raman, in the region in the range from 1500 to 2500 cm-1 with source in the visible range, having a concentration in the range from 10"5 to 10"1 M, and (ii) at least one polymeric carrier; wherein at least two of said at least three inks are different from each other; wherein said at least three inks are deposited, the one independently of the other, in at least two distinct deposition zones of the surface of the polymeric support A); and wherein said deposition sequence of said at least three inks in said at least two distinct zones of the surface of the polymeric support defines a numerical code.
Resumen de: US2025153499A1
A security device includes an array of microimage elements formed of at least a first material and a second material, the microimage elements of the array being integrally registered with one another. The material composition of the array of microimage elements varies across the array along a first direction such that the array of microimage elements exhibits a gradual change in relative concentration of the first and second materials along the first direction.
Resumen de: WO2025098741A1
The invention relates to a method for producing a counterfeit-resilient document, to a method for handling the counterfeit-resilient document, to a device for producing the counterfeit-resilient document, to a device for handling the counterfeit-resilient document and to a system having the two devices. The counterfeit-proof document (1) has a substrate (2) to which at least one protective element (3, 4, 5) made of a luminescent, fluorescent or phosphorescent material is introduced or applied. Information is applied or introduced onto the substrate (2) and a spatial arrangement of the at least one protective element (3, 4, 5) is stored during production. A number of randomly arranged fibres may be provided.
Resumen de: US2025151665A1
A security planter comprises a container having a bottom and at least one groove on at least one external surface of the container, and a first display located in the groove, attached to the container and operatively connected to a controller located inside the container. A method of manufacturing of a security planter, the method comprising: welding a rebar; covering the rebar with concrete to manufacture a container; polishing external surfaces of the container with at least one diamond stone in at least three stages of polishing and then sanding the external surfaces; and after pressure washing and drying the container, applying at least one of a sealer and a coating to the external surfaces of the container.
Resumen de: CN119486890A
The invention relates to an optically variable planar pattern. The surface pattern comprises a first sub-wavelength structure which defines a first surface region and is designed to produce at least one first color impression for an observer at at least one first viewing angle. Furthermore, the surface pattern comprises a light-transmissive color layer, which defines a second surface region and is designed to produce a second color impression. The first face region at least partially overlaps the second face region and forms a first overlap region such that the first sub-wavelength structure is covered by the light-transmissive color layer in the first overlap region. The first overlapping region is designed to generate at least one third color impression for the observer at at least one first viewing angle. The first sub-wavelength structure has a distance from the light-transmissive color layer in the first overlap region. The invention also relates to a value document having such an optically variable surface pattern and to a method for producing an optically variable surface pattern.
Resumen de: WO2023233428A1
The present invention relates to security feature for bank notes. More particularly the present invention relates to security feature based on combination of structured magnetic elements that is composed of different coercivity areas which are applied/ deposited/printed adjacent to each other and yet separated from each other by a separating element such as a magnetic or non-magnetic ink such that different coercivity areas do not overlap each other, thereby providing a more secure, more complex and more efficient security thread, with exceptional multiple codes and method of manufacturing the same.
Resumen de: AU2023303042A1
The present invention relates to the field of processes for producing a security feature on a substrate by an intaglio printing process comprising a step a) of inking an intaglio engraved printing plate with an oxidative drying intaglio ink, said intaglio engraved printing plate being at a printing plate temperature between about 45°C and about 85°C; a step b) of wiping off any excess the oxidative drying intaglio ink using a paper of a tissue wiping system or using a polymeric wiping cylinder and cleaning said polymeric wiping cylinder with an alkaline aqueous wiping solution in combination with one or more mechanical means; a step c) of transferring said oxidative drying intaglio ink in the form of the security feature on the substrate; and a step d) of drying the oxidative drying intaglio ink in the presence of air so as to form the security feature.
Resumen de: US2025067908A1
An optical security element to limit counterfeiting. The element includes a lens array with a first side and a second planar side opposite the first side. A plurality of lenses are formed on the first side of the lens array, and an ink layer is provided proximate the second planar side. The ink layer provides an interlaced image, which includes a matrix of frame or image elements under each of a plurality of lens sets or “virtual lenses,” each of which includes at least four lenses arranged in a grouping with an equal or unequal number of lenses on a side (e.g., a 2 by 2 array or a 2 by 3 array). The interlaced element are arranged in non-sequential order in two interlacing axes (e.g., via non-sequential interlacing in both directions) to be distributed throughout an area under the at least four lenses rather than under a single lens.
Resumen de: DE102023130698A1
Die Erfindung betrifft ein Verfahren zur Herstellung eines fälschungssicheren Dokuments, ein Verfahren zur Handhabung des fälschungssicheren Dokuments, eine Vorrichtung zu Herstellung des fälschungssicheren Dokuments, eine Vorrichtung zu Handhabung des fälschungssicheren Dokuments und ein System mit beiden Vorrichtungen. Das fälschungssichere Dokument (1) weist ein Substrat (2) auf, in welchem zumindest ein Schutzelement (3,4,5) aus einem lumineszierenden, fluoreszierenden oder phosphoreszierenden Material eingebracht oder aufgebracht wird. Dabei werden auf das Substrat (2) Informationen aufgebracht oder eingebracht und eine räumliche Anordnung des zumindest einen Schutzelements (3 ,4 , 5) wird bei der Erstellung gespeichert.
Resumen de: US2025146936A1
A method for generating an at least partial fluorescent property in a material is provided. The method comprises providing the material, providing a laser, arranging the material in a beam path of the laser such that the laser can selectively section wise irradiate the material, and at least section wise irradiating a surface of the material with the laser. The at least sectionwise irradiating of the surface of the material with the laser is performed until visible traces of smoke are formed on the irradiated areas of the surface of the material, whereby a fluorescent property is generated in the irradiated areas.
Resumen de: AU2023368598A1
A composition for anti-counterfeit ink comprising organic-inorganic hybrid infrared absorbing particles and a liquid medium, wherein the organic-inorganic hybrid infrared absorbing particles have 15-55 mass% of infrared absorbing particles and a coating resin that covers at least a portion of the surface of the infrared absorbing particles.
Nº publicación: EP4549163A2 07/05/2025
Solicitante:
COVESTRO DEUTSCHLAND AG [DE]
Covestro Deutschland AG
Resumen de: EP4549163A2
Die vorliegende Erfindung betrifft ein verbessertes Verfahren zum partiellen Einfärben, insbesondere zum farbigen Lasergravieren, von Kunststoffteilen, insbesondere thermoplastischen Kunststoffteilen, ganz besonders von thermoplastischen Kunststoffteilen umfassend einen Schichtaufbau, die resultierenden partiell eingefärbten, vorzugsweise farbig lasergravierten, Kunststoffteile, insbesondere thermoplastische Kunststoffteile sowie eine Vorrichtung zum partiellen Einfärben von Kunststoffteilen.