# US 10,479,129 B2 · Methods of manufacturing security structures for security documents > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,479,129 B2 - Document ID: US10479129B2 - Status: Granted - Kind: B2 - Application number: 16/073,966 - Filed: 2017-01-30 - Published: 2019-02-07 - Granted: 2019-11-19 - Earliest claimed: 2016-01-29 - Assignees: De La Rue International Limited - Applicants: De La Rue International Limited - Inventors: Robert Whiteman - Web page: https://patentgrep.com/patent/US10479129B2 ## CPC - B42D 25/40: Manufacture - B42D 25/29: Securities; Bank notes - B42D 25/337: Guilloche patterns - B42D 25/351: Translucent or partly translucent parts, e.g. windows - B42D 25/355: Security threads - B42D 25/373: Metallic materials - B42D: BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS ## Abstract A method of manufacturing a hybrid security structure for a security document, the method comprising the steps of: providing a document substrate; applying to the document substrate, by a first process, a first element comprising a first electrically conductive region of the hybrid security structure; applying to the document substrate, by a second process, a second element comprising a second electrically conductive region of the hybrid security structure, wherein the first process is different from the second process; and electrically coupling the first and second electrically conductive regions of the hybrid security structure for detection by a capacitance sensor. ## Claims ### Claim 1 A method of manufacturing a hybrid security structure for a security document, the method comprising the steps of: providing a document substrate; applying to the document substrate, by a first process, a first element comprising a first electrically conductive region of the hybrid security structure; applying to the document substrate, by a second process, a second element comprising a second electrically conductive region of the hybrid security structure, wherein the first process is different from the second process; and electrically coupling the first and second electrically conductive regions of the hybrid security structure using a DC or AC connecting element, so as to provide an electrical capacitance for detection by a capacitance sensor. ### Claim 2 (depends on 1) A method according to claim 1, wherein the first element is applied directly to the document substrate, and wherein the first process is printing or vapour deposition. ### Claim 3 (depends on 1) A method according to claim 1, wherein the second element is applied indirectly to the document substrate via a carrier substrate or a transfer element. ### Claim 4 (depends on 3) A method according to claim 3, wherein the second process comprises the steps of: applying metallic material to the carrier substrate to form a metallized stripe, patch or thread; and adhering the metallized stripe, patch or thread to the document substrate. ### Claim 5 (depends on 4) A method according to claim 4, wherein the metallized stripe, patch or thread is adhered to the document substrate using an electrically conductive adhesive. ### Claim 6 (depends on 4) A method according to claim 4, wherein the second process comprises forming a metallized thread and embedding the thread into the substrate, fully or partially. ### Claim 7 (depends on 1) A method according to claim 1, wherein the first electrically conductive region is a region of conductive ink. ### Claim 8 (depends on 7) A method according to claim 7, wherein the first process comprises printing the region of conductive ink on the substrate, by one of lithography, offset lithography, UV cured lithography, intaglio, letterpress, flexographic printing, gravure printing or screen-printing. ### Claim 9 (depends on 1) A method according to claim 1, wherein the second electrically conductive region is a region of conductive ink. ### Claim 10 (depends on 9) A method according to claim 9 wherein the second process comprises printing the region of conductive ink on the substrate, by one of lithography, offset lithography, UV cured lithography, intaglio, letterpress, flexographic printing, gravure printing or screen-printing. ### Claim 11 (depends on 1) A method according to claim 1, wherein the second electrically conductive region comprises at least two sub-regions spatially separate from each other, at least one of the sub-regions being electrically coupled to the first electrically conductive region. ### Claim 12 (depends on 11) A method according to claim 11, wherein the sub-regions are between 6 mm and 10 mm. ### Claim 13 (depends on 1) A method according to claim 1, wherein electrically coupling the first and second electrically conductive regions comprises providing an electrically conductive thread. ### Claim 14 (depends on 1) A method according to claim 1, wherein electrically coupling the first and second electrically conductive regions comprises an elongate or curvilinear element of conductive ink. ### Claim 15 (depends on 14) A method according to claim 14, wherein the elongate or curvilinear element has a width of 0.1-2 mm. ### Claim 16 (depends on 1) A method according to claim 1, wherein the electrically conductive areas have a sheet resistance smaller than 1000 Ohms per square. ### Claim 17 (depends on 1) A method according to claim 1, further comprising the step of printing a partial pattern in a region adjacent to or at least partially overlapping spatially with at least one of the first and second electrically conductive regions to form an integrated pattern with the at least one of the first and second electrically conductive regions thereby concealing the at least one of the electrically conductive regions. ### Claim 18 (depends on 17) A method according to claim 17, wherein the partial pattern comprises one or more of line patterns, guilloche patterns, fine filigree line patterns, dot structures, geometric patterns, alphanumeric characters, symbols or other indicia. ### Claim 19 (depends on 17) A method according to claim 17, wherein the partial pattern is printed on the substrate, by one of lithography, UV cured lithography, intaglio, letterpress, flexographic printing, gravure printing or screen-printing. ### Claim 20 (depends on 17) A method according to claim 17, wherein the partial pattern is provided using one or more of colored inks, black inks, optically variable inks, fluorescent inks. ### Claim 21 (depends on 1) A method according to claim 1, wherein at least one of the first and second elements provides an optically variable effect. ### Claim 22 (depends on 1) A method according to claim 1, wherein at least one of the first and second electrically conductive regions is an earthing area. ### Claim 23 (depends on 1) A method according to claim 1, wherein the capacitance sensor is a touchscreen. ### Claim 24 (depends on 23) A method according to claim 23, wherein the hybrid security structure is detected when the surface of the security document is brought into static and/or dynamic contact with the touchscreen. ### Claim 25 (depends on 1) A hybrid security structure manufactured using a method according to claim 1. ### Claim 26 (depends on 25) A security document comprising a hybrid security structure according to claim 25. ### Claim 27 (depends on 26) A security document according to claim 26, the security document being one from the group comprising banknotes, fiscal stamps, cheques, postal stamps, certificates of authenticity, articles used for brand protection, bonds, payment vouchers. ### Claim 28 (depends on 7) A method according to claim 7, wherein the region of conductive ink is a semi-transparent ink including semi-conductive polymers and silver nano-particles. ### Claim 29 (depends on 9) A method according to claim 9, wherein the region of conductive ink is a semi-transparent ink including semi-conductive polymers and silver nano-particles. ### Claim 30 A method comprising the steps of: providing a substrate of a security document; printing on the substrate a first partial pattern, having an electrically conductive region so as to provide an electrical capacitance for detection by a capacitance sensor; and printing on the substrate a second partial pattern adjacent to or overlapping the first partial pattern to thereby form an integrated pattern and conceal the electrically conductive region, wherein the first partial pattern is printed using conductive ink and wherein the second pattern is printed using a non-conductive ink. ### Claim 31 (depends on 30) A method according to claim 30, wherein the second partial pattern comprises a one or more of line patterns, guilloche patterns, fine filigree line patterns, dot structures, geometric patterns, alphanumeric characters, symbols or other indicia. ### Claim 32 (depends on 30) A method according to claim 30, wherein the partial patterns are printed on the substrate by one of lithography, UV cured lithography, intaglio, letterpress, flexographic printing, gravure printing or screen-printing. ### Claim 33 (depends on 30) A method according to claim 30, wherein the first partial pattern is printed using one or more of semi-transparent inks, colored inks, black inks, optically variable inks. ### Claim 34 (depends on 30) A method according to claim 30, wherein the second partial pattern is printed using one or more of colored inks, black inks, optically variable inks, magnetic inks, fluorescent inks. ### Claim 35 (depends on 30) A method according to claim 30, wherein the security document comprises a hybrid security structure; wherein the first partial pattern forms a first electrically conductive region of the hybrid security structure; wherein the second partial pattern forms a second electrically conductive region of the hybrid security structure; wherein the second partial pattern is printed by a different process from the first partial pattern; and wherein the first and second electrically conductive regions are electrically coupled for detection of the electrical capacitance by the capacitance sensor.