TH38221A - Safety devices with various safety characteristics and manufacturing methods - Google Patents

Abstract

DC60 (10/02/42) Security devices, which offer multiple security features, are used with items such as secured documents, tickets, labels, or tags to verify their authenticity and/or to encode information relating to them. One example of a security device would involve a carrier substrate, a metal layer placed on the carrier substrate, and a magnetic layer placed on the metal layer in a manner that is at least partially in contact with the metal layer, which in turn provides both metallic and magnetic security features. The metal and magnetic layers would also create graphic or visually identifiable markings on the carrier substrate to provide visible security. In one method, the metal layer is fed onto the carrier substrate, the magnetic layer is fed onto the metal layer, and these layers are chemically etched to create the graphic markings. In one scheme, the magnetic layer may contain a chemically magnetically resistant component which is printed on the metal layer as a graphic marking. Magnetic security features utilize one or more magnetic characteristics, such as magnetic strength and weak magnetic decay rate, to verify authenticity and/or encode information. Magnetic security features may also include magnetic tracks for data recording. Metal-based security features use varying lengths of conductive regions to verify authenticity and/or encode information. Security devices incorporating multiple security features are used on items such as documents, tickets, labels, or tags to verify their authenticity and/or encode information related to them. One example of a security device might include a carrier substrate, a metal layer placed on the carrier substrate, and a magnetic layer placed on the metal layer in a manner that directly overlaps at least a portion of the metal layer which provides both metal-based and magnetic security features. The metal and magnetic layers may also create graphic or visually identifiable markings on the carrier substrate to provide visible security features in one way or another. Metal layers are fed onto a carrier substrate; magnetic layers are fed onto these metal layers. These are then chemically etched to create graphic markings. In one lattice system, the magnetic layer may contain chemically magnetically resistant regions, which are printed onto the metal layer as graphic markings. Magnetic security features utilize one or more magnetic characteristics, such as magnetic strength and soft magnetic decay rates, for authentication and/or data encoding. Magnetic security features may also include magnetic tracks for data recording. Metal security features use varying lengths of conductive regions for authentication and/or data encoding.

Claims (10)

1. Magnetic/Metal Safety Device (10) for use with object (12) to provide multiple safety elements, in which such magnetic/metal safety device (10) consists of a plate substrate (14) of a certain width; a metallic safety element consisting of a metal layer placed on at least one portion of such plate substrate, in which the metal layer (20) creates several conductive regions (42) on such plate substrate, in which these conductive regions are separated by non-conductive regions (44) extending across such width of such plate substrate (14), in which each conductive region (42) of the metal layer contains at least one detectable predefined characteristic, in which the metal layer (20) provides a metallic safety element, in which the metal layer also creates a visually identifiable graphic mark (16); and a magnetic safety element consisting of a magnetic layer (22) containing at least one magnetic element with at least one predefined magnetic characteristic. The magnetic layer will provide a magnetic safety layer, in which the magnetic layer (22) is placed on at least some of the metal layer (20). 2. Magnetic/metallic safety devices (12) as specified in claim 1, whereby the magnetic layer (22) shall include a solid magnetic material capable of creating a magnetic image for recording data on such magnetic layer. 3. Magnetic/metallic safety devices as specified in claim 1, whereby such magnetic layer (22) shall include at least one magnetic substance with at least one predefined magnetic characteristics, and whereby at least one of such predefined magnetic characteristics is detectable for the identification of the object (10) containing such safety device. 4. Magnetic/metallic safety devices as specified in Reputation 1, whereby such magnetic layer (22) shall include at least one first and second magnetic material with at least one first and second predefined magnetic characteristics, respectively, and a predefined pattern representing information encoded by such magnetic layer, whereby such first and second predefined characteristics shall be detectable in order to read such predefined pattern and decode such information. 5. Magnetic/metallic safety devices (12) as specified in claim 1, where at least two distinct primary and secondary conductive regions of several conductive regions (42) separated by non-conductive regions (44) shall have at least two distinct predefined lengths, respectively, which create at least two distinct primary and secondary metallic characteristics, respectively, which create a predefined pattern representing the information encoded by such metallic layer (20), and where such predefined pattern may be detected and read to decode such information. 6. Method of manufacture of a ferrous/metallic safety device (12) which contains multiple safety components as per claim 1, where such method consists of the following steps: provision of a substrate plate (14) of a certain width and a first and second surface; attachment of a metal layer (20) to at least one part of the first surface of the substrate plate; attachment of a magnetic layer (22) over at least one part of the metal layer (20), where the magnetic layer (22) shall include at least one magnetic substance with at least one predefined magnetic characteristics, where the magnetic layer shall provide a magnetic safety component; where such metal layer shall be attached or etched to create multiple conductive regions (42) on the substrate plate (14), where each conductive region shall include at least one of the predefined characteristics, where the areas of such conductive regions (44) shall be separated by non-conductive regions (42) extending across the certain width of the substrate plate (14). 7. The method specified in claim 6, where the metal layer (22) is etched using chemicals. 8. The method described in claim 6, whereby the metal layer (22) is etched, whereby the metal layer (22) creates several conductive regions (42) on the substrate, and whereby the conductive regions (42) are separated by non-conductive regions (44) that extend across the width of the supporting substrate (14). 9. The method specified in claim 6, whereby the magnetic layer (22) is attached in the form of a pattern on the metal layer (20) using a magnetic chemical resistance change material, whereby the metal layer (20) is chemically etched to remove exposed portions of the metal layer (20), whereby the chemical etching is resisted by the magnetic chemical resistance change material, whereby the magnetic chemical resistance change material and at least a portion of the metal layer (20) beneath the magnetic chemical resistance change material are sufficiently compatible and together form an identifiable mark on the supporting magnetic substrate. 10. Method of verifying the authenticity of a magnetic/metallic safety device (10) under Reputation 1, where the device shall have a certain width and include at least one magnetic region (22) with at least one predefined magnetic characteristics, several metallic conductive regions (42) each with a predefined metallic characteristic, and a non-conductive region (44) where such non-conductive region (44) extends across such width of the aforementioned safety device (10), where such method consists of the following steps: magnetization of such magnetic regions of the magnetic/metallic safety device; detection of the predefined magnetic characteristics of the magnetized magnetic regions; detection of the predefined metallic characteristics of the metallic regions; and comparison of at least one of the predefined magnetic characteristics and the predefined metallic characteristics with the expected magnetic characteristics and metallic characteristics.