Abstract:
Предложенное решение относится к средствам идентификации объекта и может быть использована для повышения надежности защиты от подделки и контроля подлинности различных ценных документов и изделий с использованием светочувствительной идентифицирующей метки, нанесенной фотохромными чернилами на основе бактериородопсина методом пьезоэлектрической струйной печати. Светочувствительная идентифицирующая метка содержит расположенный на подложке слой фотохромной композиции в виде фотохромных чернил на основе суспензии бактериородопсина, который сформирован фотохромными чернилами методом пьезоэлектрической струйной печати и закреплен в процессе сушки при комнатной температуре в виде пленки, при этом фотохромные чернила включают бактериородопсин в виде фрагментов пурпурных мембран.
Abstract:
Светочувствительная идентифицирующая метка выполнена в виде многослойной конструкции, включающей легко разрушаемую при удалении подложку в комбинации с наружным адгезионным слоем, на внутренней поверхности которой посредством акрилового адгезионного состава закреплен слой фотохромной композиции в виде взвешенного в желатине бактериородопсина, и защитный слой из легко разрушаемой при удалении оптически прозрачной пленки, прикрепленной к подложке и к слою фотохромной композиции посредствам акрилового адгезионного состава.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren, einen Sensor, eine Sensoreinheit und eine Banknotenbearbeitungsmaschine zur Prüfung der Vollständigkeit und/ oder Echtheit von Wertdokumenten. Ein Wertdokument umfasst mindestens einen maschinenlesbaren Merkmalstoff an wenigstens zwei Orten. Gemäß dem Verfahren wird zumindest lokal an Messorten das Wertdokument angeregt (S2). Weiterhin wird eine Merkmalsintensität bezüglich des maschinenlesbaren Merkmalstoffs an mehreren unterschiedlichen Orten des Wertdokuments ortsaufgelöst erfasst (S3a). Die ortsbezogenen Merkmalsintensitäten werden anhand eines Schwellwerts ortsbezogen Klassifiziert (S5). Weiterhin werden ortsbezogene Grenzen einer zu erwartenden Ortsverteilung des maschinenlesbaren Merkmalstoffs bestimmt (S6). Abschließend wird eine ortsbezogene Verteilung der klassifizierten Merkmalsintensitäten bewertet (ST).
Abstract:
The present disclosure relates to methods, a system (100) and an analyze server (40) for verifying the authenticity of identity documents and extracting textual information therefrom. The presence of the identity document in a slot of a scanner (10) is detected and three different images of the identity document are acquired when the identity document is illuminated with white light, UV light and IR light, respectively. The images are encrypted and sent to an analyze server (40) which determines the authenticity of the identity and extracts textual information. The analyze server (40) generates an encrypted verification report including textual information extracted from the identity document and sends it to the scanner (10), which in turn sends a first signal to an indicating means (24) for indicating the state of the authenticity of the identity document and the textual information to a Point of Sale (POS) system (70) in response to that the identity document has been verified.
Abstract:
The present disclosure relates to a method and a scanner for verifying the authenticity of identity documents (32). The scanner (10) comprises a slot (30) for receiving the identity document (32), at least one light source (18, 20, 22) and a camera (26) for acquiring images. The method detects, by means of the camera (26), the presence of the identity document (32) in the slot (30) of the scanner (10) and acquires three different images of the identity document (32) when it is illuminated with white light, UV light and IR light respectively. The images are encrypted and sent to an analyze server which in response to a request returns a second message comprising a verification report including textual information extracted from the identity document (32). The scanner (10) sends a first signal to an indicating means (24) for indicating the state of the authenticity of the identity document (32) and the textual information to a Point of Sale, POS, system (70) in response to that the identity document (32) has been verified.
Abstract:
The present invention relates to a method of tagging a substrate with a covert, spectroscopically detectable security feature, wherein a liquid treatment composition comprising at least one acid is deposited onto a substrate, which comprises at least 5one external surface comprising a salifiable alkaline or alkaline earth compound.
Abstract:
La presente invención se refiere a un método de fabricación de un elemento óptico para seguridad documental con múltiples imágenesque pueden visualizarse dependiendo del modo en que se observadicho elemento. El método comprende los pasos de definir diferentes zonas en la cara interna de una primera estructura de confinamiento; inducir diferentes direcciones de alineamiento para las zonas definidas; definir una segunda estructura de alineamiento, donde la segunda estructura es un polarizador con patrones múltiples; colocar un cristal líquido entre la primera y la segunda estructuras; y polimerizar el cristal líquido formando una lámina. Las imágenes pueden visualizarsepor medio de una fuente de luz polarizada o una lámina polarizadora.
Abstract:
An optical device for authenticating articles of value, the optical device including: a first diffractive structure for generating a first diffractive image; a second diffractive structure for generating a second diffractive image; and a non-diffractive structure; wherein, the first and second diffractive structures, and the non-diffractive structure, are positioned relative to each other such that when viewed from a first angle, both the first and second diffractive images are visible, and when viewed from a second angle, the first diffractive image is visible while the second diffractive image is not visible. The first and/or second diffractive structures are formed on the non-diffractive structure such that when viewed from a first angle, both the first and second diffractive images are visible, and when viewed from the second angle, the first diffractive image is visible while the second diffractive structure is obscured by the non-diffractive structure.
Abstract:
A method for producing an optical device, preferably a security device, including the steps of: forming a planar relief structure on a substantially planar first surface of a substrate, preferably a transparent substrate, the planar relief structure having a first alignment direction and including a plurality of relief structure elements each having the same height; and applying a liquid crystal polymer (LCP) layer onto the planar relief structure such that the LCP layer is aligned with the relief structure, wherein the LCP layer includes at least one or more first LCP regions having a first height and one or more second LCP regions having a second height above the substantially planar first surface of the substrate, wherein the second height is different to the first height, and an optical device formed by such a method.