Resumen de: AU2024254955A1
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: AU2024255149A1
A security feature for a security document, the security feature comprising one or more photoluminescent ink layers, each including a composition capable of emitting visible light when irradiated with a specified electromagnetic wavelength range, wherein the one or more photoluminescent ink layers are at least partially printed in a window region of the security document.
Resumen de: WO2026034009A1
A security element (10) according to one aspect of the present disclosure is provided with a laminate (12) on a substrate (11). The laminate includes: a phosphor-dispersed layer (14) in which a plurality of phosphor particles (14A) are dispersed; and a light absorption layer (13) that is disposed between the substrate and the phosphor-dispersed layer and is capable of absorbing excitation light for exciting the plurality of phosphor particles.
Resumen de: WO2026031711A1
The present invention relates to the technical field of optical anti-counterfeiting. Disclosed are a single-mode excitation color-tunable luminescent upconversion material, and a preparation method therefor and a use thereof in security anti-counterfeiting. The single-mode excitation color-tunable luminescent upconversion material has a molecular formula of AxMOCly-1:Yb/Ln, wherein A is at least one of Li+, Na+, K+, and Cs+, M is at least one of La3+, Y3+, Gd3+, and Lu3+, and Ln is at least one of Er3+, Ho3+, and Tm3+, with 1≤x≤4 and 4≤y≤7. The single-mode excitation color-tunable luminescent upconversion material has an excitation wavelength range of 950 nm to 11000 nm and an emission wavelength range of 400 nm to 800 nm. Under excitation by single-mode near-infrared light, the material exhibits color-tunable upconversion luminescence. The upconversion material has a fast-responsive color-tunable luminescence function, can be used as a high-level security anti-counterfeiting strategy, and is easy and convenient to identify.
Resumen de: US20260042312A1
A security element for a value document includes: 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: US20260042925A1
The present invention relates to a luminescent ink having a composition in % by weight comprising 20-55% of solvent, 5-55% of diluent; 2-15% of dispersant additive; 5-35% of solid particles with fluorescent properties, and 0.5-15% of solid dopant particles. The invention also relates to a process for obtaining a ceramic product with a printed luminescent label which incorporates a step in which digital printing is performed with said luminescent ink, this printing being applied on the surface substrate of the unfired ceramic part; and wherein the printing is performed with a digital printing machine; subjecting the ceramic part to a subsequent heat treatment in a conventional ceramic furnace at a temperature comprised between 650 and 1400° C.; and obtaining a fired ceramic product comprising a luminescent label visible with ultraviolet light. The invention also relates to a ceramic product obtainable by means of said process for obtaining a ceramic product, as well as to the use of the ink for printing luminescent labels that glow under ultraviolet light on ceramic products.
Nº publicación: EP4690162A1 11/02/2026
Solicitante:
CRANE & CO INC [US]
CRANE & CO., INC
Resumen de: WO2024205684A1
A secure document (100) includes a substrate (105) having a predetermined width and a predetermined length; a first covert feature (507) formed in the substrate; and a second covert feature (509) formed in the substrate, wherein the first covert feature is disposed at a first location on the substrate, the first location corresponding to a first registration region of an authenticating overlay (600), and wherein the second covert feature is disposed at a first location on the substrate, the first location corresponding to a second registration region of the authenticating overlay.