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43
resultados
Última actualización
19/07/2025 [07:23:00]
Resultados 25 a 43 de 43
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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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.
Nº publicación: EP4554797A1 21/05/2025
Solicitante:
MILANO POLITECNICO [IT]
Politecnico di Milano
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.
BOPI
Sede Electrónica
