There is described a printed security feature (10) provided onto a printable substrate, which printed security feature includes a printed area (11) with at least a first printed section consisting of a multiplicity of geometric elements (GE, 15) printed with a given distribution over the printed area. The geometric elements are printed with at least first and second inks which exhibit the same or substantially the same optical appearance when illuminated with visible white light, such that the printed security feature produces a first graphical representation (A1) when illuminated with visible white light. At least the first ink is an ink which responds to non-visible light excitation by producing a characteristic optical response differentiating the first ink from the second ink. The printed security feature produces a second graphical representation (B1) when illuminated with non-visible light, which exhibits a distinctive two-dimensional graphic element (B) which is revealed only when the printed security feature is illuminated with non-visible light. The first printed section is subdivided into at least first and second printed portions (P1, P2), adjacent to the distinctive two-dimensional graphic element, and a third printed portion (P3), inside boundaries (200) of the distinctive two-dimensional graphic element. In the first, respectively second printed portion, the geometric elements are printed with the first, respectively second ink. In the third printed portion, the geometric elements are sub-divided into first and second contiguous portions (GE_a, GE_b) which are respectively printed with the first and second inks. The first and second inks are printed in register one with respect to the other so that the boundaries of the distinctive two-dimensional graphic element are not visible when the printed security feature is illuminated with visible white light and the distinctive two-dimensional graphic element only becomes visible when the printed security feature is illuminated with non-visible light.

A security device is provided including a first pattern of elements and a second, overlapping, pattern of elements spaced by a transparent layer, the first and second patterns in combination obstructing the passage of light transmitted to a viewer through the device to a varying degree depending on the viewing position. The first and second patterns of elements are configured such that a first region of the device exhibits a maximum change in the degree of obstruction when the device is tilted relative to the viewer about a first tilt axis, and a second region of the device exhibits a maximum change in the degree of obstruction when the device is tilted relative to the viewer about a second tilt axis which is not parallel to the first tilt axis.

A fluorescence and phosphorescence detection device includes a fluorescence and phosphorescence sensor, a data acquiring unit, and an emission detection unit. The fluorescence and phosphorescence sensor includes a light source that emits an excitation light of a predetermined wavelength, and a photodetection unit that detects fluorescence emission and phosphorescence emission excited from the paper sheet by the excitation light. The data acquiring unit acquires a time-series waveform of a signal outputted from the fluorescence and phosphorescence sensor in response to the detection of the emission in the photodetection unit. The emission detection unit detects the fluorescence emission from the time-series waveform of a period in which the excitation light is emitted from the light source and detects the phosphorescence emission from an attenuation curve appearing on the time-series waveform of a period in which emission of the excitation light from the light source is stopped.

A method for producing a multilayer body, with the steps: a) providing a first printed layer; b) partially applying a second printed layer to the first printed layer; c) structuring the first printed layer using the second printed layer as a mask.

A multilayer body obtainable in this way and a security document with such a multilayer body.

A method for producing a multilayer body, with the steps: a) providing a first printed layer; b) partially applying a second printed layer to the first printed layer; c) structuring the first printed layer using the second printed layer as a mask.

A multilayer body obtainable in this way and a security document with such a multilayer body.

A laminate structure along with one or more security features is disclosed. The laminate structure may correspond to an identification document, such as an identification card, and may include a core layer with one or more security elements established thereon. As light is emitted into the core layer, the light impacts one or more of the security elements and is re-radiated back out of the core layer, thereby providing an indication that the laminate structure includes the security elements and is, therefore, authentic.

A laminate structure along with one or more security features is disclosed. The laminate structure may correspond to an identification document, such as an identification card, and may include a core layer with one or more security elements established thereon. As light is emitted into the core layer, the light impacts one or more of the security elements and is re-radiated back out of the core layer, thereby providing an indication that the laminate structure includes the security elements and is, therefore, authentic.

There is provided a document forgery detection system adapted to have an advanced level of document verification and scanning structure against forgery, whereby the documents gets verified by various verification methods. The forgery detection system comprises a scanning device adapted to scan the document for verification and to compare the scanned image to an original image of the document stored in a remote server associated to a relevant authority. The forgery detection system comprises a verification device adapted to receive and secure the document in place in an angle adjustable configuration, project visible and ultraviolet light on the document for exposing visible light and ultraviolet light exposable embedded marks within the document and reflect these marks to a display in optical communication with the operator. The verification device comprising a magnifier with a visible light lens and a red lens for enabling visualization of embedded marks within the document.

There is provided a document forgery detection system adapted to have an advanced level of document verification and scanning structure against forgery, whereby the documents gets verified by various verification methods. The forgery detection system comprises a scanning device adapted to scan the document for verification and to compare the scanned image to an original image of the document stored in a remote server associated to a relevant authority. The forgery detection system comprises a verification device adapted to receive and secure the document in place in an angle adjustable configuration, project visible and ultraviolet light on the document for exposing visible light and ultraviolet light exposable embedded marks within the document and reflect these marks to a display in optical communication with the operator. The verification device comprising a magnifier with a visible light lens and a red lens for enabling visualization of embedded marks within the document.

An ID document comprises a receiving substrate in or on which an ink that is fluorescent under UV-A lighting is locally deposited, and a multilayer optical security component attached to a substrate. The optical component comprises a structurable layer and a reflective dielectric layer discontinuously deposited on the structurable layer in the plane of the component so as to produce patterns. The reflective dielectric layer has a relative transmission of at most 40% in the UV-B or UV-C range. The optical component also include an assembly of at least one layer including pigments that are fluorescent when energized by UV-B or UV-C. These are deposited on the reflective dielectric layer in a uniform or discontinuous manner in the plane of the optical component.