# US 8,740,253 B2 · Radiation curable embossed ink security devices 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 8,740,253 B2 - Document ID: US8740253B2 - Status: Granted - Kind: B2 - Application number: 12/441,449 - Filed: 2007-09-14 - Published: 2010-02-11 - Granted: 2014-06-03 - Earliest claimed: 2006-09-15 - Assignees: Innovia Security Pty Ltd - Applicants: Odisea Batistatos; Gary Fairless Power - Inventors: Odisea Batistatos; Gary Fairless Power - Web page: https://patentgrep.com/patent/US8740253B2 ## CPC - B42D 25/328: Diffraction gratings; Holograms - B42D 15/00: Printed matter of special format or style not otherwise provided for - B42D 25/21: for multiple purposes - B42D 25/29: Securities; Bank notes - B42D 25/324: Reliefs - B42D 25/351: Translucent or partly translucent parts, e.g. windows - B42D 25/405: Marking - B42D 25/41: using electromagnetic radiation (B42D25/435 takes precedence) - B42D 25/425: by deformation, e.g. embossing - G03H 1/30: discrete holograms only - G07D 7/0032: {using holograms} - B41M 3/14: Security printing {(securities B42D25/29)} - B41M 7/0072: {using mechanical wave energy, e.g. ultrasonics; using magnetic or electric fields, e.g. electric discharge, plasma} - B42D 2033/24 - G03H 1/0244: {Surface relief holograms (replicating hologram without interference recording G03H1/0276)} - 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 - G03H: HOLOGRAPHIC PROCESSES OR APPARATUS (holograms, e.g. point holograms, used as ordinary optical elements G02B5/32; producing stereoscopic or other three-dimensional effects G02B30/00; diffraction-grating systems G02B27/44; systems using moiré fringes G02B27/60; optical logic elements G02F3/00; stereo-photography G03B35/00; photosensitive materials or processes for photographic purposes G03C; {stereo-photographic or similar processes G03C9/00}; apparatus for processing exposed photographic materials G03D; analogue computers performing mathematical operations with the aid of optical elements G06E3/00; authentication by radiation, of concealed information carried by holograms or diffraction gratings G06K19/16; holographic storage G11B7/0065, G11C13/04; {stereoscopic or other three dimensional effects in television systems H04N13/00}) - G07D: HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING - B41M: PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING, (correction of typographical errors B41J; processes for applying transfer pictures or the like B44C1/16; fluid media for correction of typographical errors by coating C09D10/00; printing textiles D06P) ## Abstract A security document and a method of manufacturing a security document are provided in which a radiation curable ink is applied to at least one side of a substrate including at least one region of transparent plastics material forming a window or half-window area. The ink is embossed while soft and cured with radiation to form an embossed security device within the window or half-window area including one or more of a diffractive structure, a lens structure or other security element having a relief structure. ## Claims ### Claim 1 A security document comprising a substrate including at least one region of transparent or translucent plastics material forming a window or half-window area, and a security device integrated into the window or half-window area, wherein the security device comprises a composite security device formed from a continuous layer of embossed radiation curable ink containing first and second different embossed security elements in different regions of the embossed radiation curable ink on the same side of the substrate, wherein each of said first and second security elements corresponds entirely to a respective embossed region of the radiation curable ink, wherein the second security element is located within 0.3 mm of the first security element, and wherein the first security element comprises a diffractive structure, and the second security element comprises a lens structure or other non-diffractive security element having an embossed relief structure. ### Claim 2 (depends on 1) The security document according to claim 1, wherein the security device includes a verification means for verifying another security feature provided on the document. ### Claim 3 (depends on 2) The security document according to claim 2, wherein the verification means includes a lens, a lenticular array or an array of microlenses. ### Claim 4 (depends on 1) The security document according to claim 1, wherein the composite security device includes an inspectable security element and a verification means for verifying another security feature on the document. ### Claim 5 (depends on 1) The security document according to claim 1, wherein the document is a banknote. ### Claim 6 (depends on 1) The security document according to claim 1, wherein the security device is integrated into a half-window area of the substrate. ### Claim 7 (depends on 1) The security document according to claim 1, wherein the second security element is located within 0.1 mm of the first security element. ### Claim 8 (depends on 1) The security document according to claim 1, wherein the security device includes a light transmissive security element. ### Claim 9 (depends on 8) The security document according to claim 8, wherein the security device is formed from an embossed transparent ink. ### Claim 10 A method of manufacturing a security document comprising the steps of: providing a substrate including at least one region of transparent plastics material forming a window or half-window area; applying a radiation curable ink directly to at least one surface of the substrate in at least the window or half-window area; and simultaneously embossing the ink and curing with radiation to form a security device within the window or half-window area, wherein the embossed ink forms a composite security device containing first and second different security elements in different regions of the embossed ink on the same side of the substrate, wherein the first security element comprises a diffractive structure, and the second security element comprises a lens structure or other non-diffractive relief structure. ### Claim 11 (depends on 10) A method according to claim 10, wherein at least one opacifying layer is applied to at least one side of a transparent polymeric substrate with the at least one opacifying layer omitted in the region forming the window or half window area. ### Claim 12 (depends on 11) A method according to claim 11, wherein opacifying layers are applied to opposite sides of the substrate with the opacifying layers on both sides of the substrate omitted in one region to form a transparent window in the security document. ### Claim 13 (depends on 10) The method according to claim 10, wherein the radiation curable ink is applied in a window area of the substrate. ### Claim 14 (depends on 10) The method according to claim 10, wherein the radiation curable ink is applied in a half-window area of the substrate. ### Claim 15 (depends on 10) The method according to claim 10, wherein the radiation curable ink is a transparent ink or lacquer formed from a clear resin material. ### Claim 16 (depends on 10) The method according to claim 10, wherein the radiation curable ink is applied in a Gravure printing process. ### Claim 17 (depends on 10) The method according to claim 10, wherein the radiation curable ink is a metallic ink composition applied in a layer which is sufficiently thin to allow the transmission of light.