摘要:
The invention discloses a security element for a banknote, a document of value, right or identity, a ticket, a label, a branded good identifier, or a tax banderole. The element comprises a combination of a coating containing at least one optically variable pigment having a substantial viewing-angle dependent color variation, with at least one selective spectral absorbing material, which blocks out visible spectral components reflected by the optically variable pigment at orthogonal incidence. The security element appears black when viewed at orthogonal angle, and colored when viewed at grazing angle.
摘要:
The present invention discloses a security element comprising a transparent substrate and a magnetically oriented image coating on said substrate, wherein said image coating is preferably laid out such as to show a 3-dimensional effect, appearing in positive or negative relief respectively, if observed form the recto- or the verso side, respectively. The security element can be easily identified by the unaided eye, by just turning around the document and observing the angle-dependent image on either side. On the other hand, the security element cannot be reproduced by scanning or copying the document.
摘要:
The present invention is related to a coating composition for the production of a magnetically induced image, consisting of volatile components (S) and non-volatile components, the latter consisting of an ink vehicle (I) and magnetically orientable optically variable interference pigment (P), to a process for manufacturing the coating composition, and to the use of the composition for the production of a magnetically induced image coating on a substrate with the help of applied magnetic fields. Said magnetically induced image coating may be used as a security device on value- or identity documents, brand protection labels and the like.
摘要:
The invention relates to a device, system and method for producing magnetically induced visual effects in coatings, particularly security or decorative features, containing orientable magnetic particles. The device comprises a printing unit, an orientation means, a substrate-guiding system and a photocuring unit. The printing unit is arranged to print with the coating composition an image on a first side of a substrate. The orientation means comprises a magnetic field generating element for orienting the magnetic particles in the coating composition of the printed image. The substrate-guiding system is arranged to bring and hold the substrate in contact with the orientation means. The photocuring unit irradiates the image printed on the substrate to at least partially cure the coating composition of the image while the substrate is still in contact with the orientation means. The photocuring unit is configured such that its emission of thermal radiation energy is such limited as to not heat the orientation means to an average temperature T1 exceeding 100° C.
摘要:
Pasty ink for the engraved steel die printing process, having a viscosity value above 3 Pa·s, preferably above 5 Pa·s at 40° C., and comprising an infrared absorbing material, wherein said infrared absorbing material is a transition element compound whose IR-absorption is a consequence of electronic transitions within the d-shell of transition element atoms or ions.
摘要:
The invention concerns a device for magnetically transferring indicia, such as a design or an image, to a wet coating layer applied on a substrate, such as a sheet or a web, wherein the said coating layer comprises at least one type of magnetic or magnetizable particles; said device comprising a) at least one magnetized permanent-magnetic plate (2) carrying relief, engravings or cut-outs, mounted such that its relief surface remains accessible, b) at least one additional magnet (3), disposed below said at least one permanent-magnetic plate, facing the surface of the magnetic plate which is opposite to the relief, engraving or cut-out, and c) a holder (1), which has the mechanical function to hold the pieces together in fixed positions. A method for producing the device, the use of the device, and magnetically induced designs obtained with the device, which are useful for protecting currency, value—and identity documents, are disclosed as well.
摘要:
Pasty ink for the engraved steel die printing process, having a viscosity value above 3 Pa·s, preferably above 5 Pa·s at 40° C., and comprising an infrared absorbing material, wherein said infrared absorbing material is a transition element compound whose IR-absorption is a consequence of electronic transitions within the d-shell of transition element atoms or ions.
摘要:
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.
摘要:
The present invention concerns a security thread or stripe for the incorporation into or onto a value-document or currency substrate, as well as a method and means of making such thread or stripe. The thread or stripe comprises a plastic foil which carries a hardened coating comprising oriented magnetic or magnetizable pigment particles, the orientation of said pigment particles representing graphic information. Preferred are optically variable magnetic or magnetizable pigment particles. Said hardened coating may also be comprised between a first and a second plastic foil. Said graphic information is a repetitive seamless pattern of suitable repetition length, which is produced using a magnetic orienting cylinder having a corresponding repetitive seamless magnetic field pattern. A magnetic orienting cylinder and a process for process for producing such magnetic orienting cylinder are also disclosed. The process comprises the coating of a cylindrical support body with a polymer material comprising a high-coercivity permanent-magnetic powder as a filler material, and magnetizing or engraving the seamless outer cylinder surface to form on the cylinder a repetitive seamless magnetic field pattern.
摘要:
The invention concerns a device for magnetically transferring indicia, such as a design or an image, to a wet coating layer applied on a substrate, such as a sheet or a web, wherein the said coating layer comprises at least one type of magnetic or magnetizable particles; said device comprising a) at least one magnetized permanent-magnetic plate (2) carrying relief, engravings or cut-outs, mounted such that its relief surface remains accessible, b) at least one additional magnet (3), disposed below said at least one permanent-magnetic plate, facing the surface of the magnetic plate which is opposite to the relief, engraving or cut-out, and c) a holder (1), which has the mechanical function to hold the pieces together in fixed positions. A method for producing the device, the use of the device, and magnetically induced designs obtained with the device, which are useful for protecting currency, value—and identity documents, are disclosed as well.