Abstract:
Disclosed is a paired optically variable security element which comprises first and second optically variable thin-film multilayer interference devices in the form of optically variable foils or of printings made with inks comprising optically variable interference pigments, wherein said first and second interference devices exhibit spectral matching at a determined angle of incidence. Sets of optically variable devices and of coating compositions comprising optically variable pigments for the production of said paired optically variable security element are also disclosed, as well as the use of said security element for the protection of documents and goods, and security documents and goods carrying same.
Abstract:
The present invention concerns a transfer foil, comprising a release-coated carrier (1), and on said carrier a transfer coating layer (3) having the form of a design comprising oriented optically variable magnetic pigment (OVMP), the pigment orientation representing an image, indicia, or a pattern. Processes of making and using the foil, as well as documents carrying the foil are also disclosed.
Abstract:
Security document, such as a banknote, a value paper, an identification document, an access card, a security label or packaging, comprising an imprint-able substrate, chosen from the group of papers, cardboards, textiles and polymer sheets, as a first constituting part, and at least a second constituting part, chosen from the group of printing inks, security threads, windows, fibers, planchettes, foils, and decals, wherein a same security element is contained at least a first time in or on one of its constituting parts, and at least a second time in or on another of its constituting parts. Method for producing a security document, characterized in that a same security element is applied at least a first time in a first step to one constituting part of said document, and at least a second time in a second step to another constituting part of said document.
Abstract:
The invention relates to an ink set comprising a plurality of inks of a first and of a second group, having different colors. Inks of said first group comprise a visible colorant and an additional IR-absorbing compound (IR-taggant) which has an absorption peak at a predetermined wavelength in the near infrared. Inks of said second group comprise a visible colorant which has at the same time an infrared absorption peak at the same wavelength as that of the IR-taggant used in the inks of the first group. Preferred embodiment is a four-color process ink set comprising an IR feature.
Abstract:
A bleeding or fugitive printing ink is disclosed and claimed which can be printed by the method of dry or wet offset or letterpress. This ink allows, when printed on security documents and dried, to prevent attempts of forgery or counterfeit in that the ink contains at least one dyestuff which is sensitive to organic solvents and other chemical reagents. The ink, when printed, forms a solid, polymerised or cross-linked binder matrix on the surface of the document when the printings are submitted to energy radiation, or by an oxypolymerisation reaction. This matrix is formed nearly immediately, in the case of oxypolymerisation within 24 hours, in contrast to conventional bleeding printing inks whose matrixes do not really dry and remain liquid in the interstices of the substrate.
Abstract:
The present invention concerns a transfer foil, comprising a release-coated carrier (1), and on said carrier a transfer coating layer (3) having the form of a design comprising oriented optically variable magnetic pigment (OVMP), the pigment orientation representing an image, indicia, or a pattern. Processes of making and using the foil, as well as documents carrying the foil are also disclosed.
Abstract:
The invention discloses a device and a process for producing indicia comprising magnetically oriented magnetic or magnetizable particles in an ink or coating composition on a sheet (5) of substrate material. The device comprises a flat-bed screen-printing unit having a flat printing screen (2) and a printing platen (1) for receiving said sheet (5), the printing platen (1) having an upper surface facing the printing screen and a first direction along its upper surface along which said sheet (5) is unloadable, and a magnetic orienting unit comprising multiple magnet assemblies (6). The magnetic orienting unit is disposed below the upper surface of the printing platen (1), said multiple magnet assemblies (6) are disposed along said first direction, and all of said magnet assemblies (6) are concomitantly movable from a first position away from the upper surface of the printing platen to a second position close to the upper surface of the printing platen.
Abstract:
Disclosed is a paired optically variable security element which comprises first and second optically variable thin-film multilayer interference devices in the form of optically variable foils or of printings made with inks comprising optically variable interference pigments, wherein said first and second interference devices exhibit spectral matching at a determined angle of incidence. Sets of optically variable devices and of coating compositions comprising optically variable interference pigments for the production of said paired optically variable security element are also disclosed, as well as the use of said security element for the protection of documents and goods, and security documents and goods carrying same.
Abstract:
Security document, such as a banknote, a value paper, an identification document, an access card, a security label or packaging, comprising an imprint-able substrate, chosen from the group of papers, cardboards, textiles and polymer sheets, as a first constituting part, and at least a second constituting part, chosen from the group of printing inks, security threads, windows, fibers, planchettes, foils, and decals, wherein a same security element is contained at least a first time in or on one of its constituting parts, and at least a second time in or on another of its constituting parts. Method for producing a security document, characterized in that a same security element is applied at least a first time in a first step to one constituting part of said document, and at least a second time in a second step to another constituting part of said document.