WO2005120855A1 - Improvements in security devices - Google Patents
Improvements in security devices Download PDFInfo
- Publication number
- WO2005120855A1 WO2005120855A1 PCT/GB2005/002271 GB2005002271W WO2005120855A1 WO 2005120855 A1 WO2005120855 A1 WO 2005120855A1 GB 2005002271 W GB2005002271 W GB 2005002271W WO 2005120855 A1 WO2005120855 A1 WO 2005120855A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- shape memory
- memory polymer
- security substrate
- liquid crystal
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- 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
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/364—Liquid crystals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- 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
- B42D15/00—Printed matter of special format or style not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- 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
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- 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
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/373—Metallic materials
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
-
- B42D2033/26—
Definitions
- WO-A-03061980 there is provided a method of manufacturing a substrate comprising the steps of applying a darkly coloured resist to at least a part of a metallic layer on one side of a substantially transparent polymeric film, removing metal from areas not covered by the resist to form demetallised regions and applying a polymeric liquid crystal material over the resist and the demetallised regions.
- the substrate produced by the method in WO-A-03061980 can be incorporated into secure documents such as banknotes as a thread, stripe or patch.
- Cholesteric liquid crystals have certain unique properties in the chiral nematic phase. It is the chiral nematic phase that produces an angularly dependent coloured reflection and a difference in colour when viewed in either transmission or reflection. Cholesteric liquid crystals form a helical structure which reflects circularly polarised light over a narrow band of wavelengths. The wavelength is a function of the pitch of the helical structure which is formed by alignment within the liquid crystal material. An example of such a structure is depicted in Figure 1 with the cholesteric helical axis in the direction of the arrow X. The reflection wavelength can be tuned by appropriate choice of chemical composition of the liquid crystal. The materials can be chosen to be temperature sensitive or insensitive.
- FR-A-2698390 describes a security thread comprising a piezochromic liquid crystal layer in which a colour change is induced by the authenticator pressing down on selected areas of the thread.
- the effectiveness of the device is dependent on the amount of pressure applied by the authenticator which can lead to unwanted variability in the degree of colour change observed.
- Figure 1 depicts chiral nematic alignment of a cholesteric liquid crystal material
- Figure 2 shows how the reflection from a cholesteric liquid crystal material varies with the angle of incidence
- Figure 3 depicts the transmission and reflection of light incident on a liquid crystal material
- Figure 4 is a cross-sectional side elevation of a substrate according to the present invention for use in security or authenticating devices.
- Figures 5 to 8 are cross-sectional side elevations of alternative embodiments of the substrate of Figure 4
- Figures 9 and 10 are cross-sectional side elevations of machine readable constructions incorporating a substrate according to the present invention.
- Figure 7 shows a further embodiment of the substrate 10 of the current invention.
- the structure is the same as that shown in Figure 6 except that the opposite surface of the semi-opaque polymeric film 15 has been metallised, using vapour deposited aluminium 16, and contains demetallised indicia 17, produced by a method, such as that described in EP-A-0319157.
- the vapour deposited metallised layer can be replaced with conducting or non-conducting metallic ink.
- the shape memory polymer film 14 On warming the substrate 10 above the activation temperature, preferably 35-37°C, the shape memory polymer film 14 reverts to its "stretched" permanent shape and induces a stress in the liquid crystal film 13.
- the induced stress in the liquid crystal film 13 produces a known colour change.
- the liquid crystal film 13 is stretched and when viewed in reflection the colour goes to shorter wavelengths for example red goes to green and green goes to blue, resulting in a colour shift from green to blue as the device is tilted.
- the elastic nature of the laminate system will force the substrate 10 to relax to its original dimension and the liquid crystal film 13 to its original colour.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2005252004A AU2005252004A1 (en) | 2004-06-10 | 2005-06-09 | Improvements in security devices |
EP05750255A EP1753627A1 (en) | 2004-06-10 | 2005-06-09 | Improvements in security devices |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0412979.7 | 2004-06-10 | ||
GBGB0412979.7A GB0412979D0 (en) | 2004-06-10 | 2004-06-10 | Improvements in security devices |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005120855A1 true WO2005120855A1 (en) | 2005-12-22 |
Family
ID=32732267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2005/002271 WO2005120855A1 (en) | 2004-06-10 | 2005-06-09 | Improvements in security devices |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1753627A1 (en) |
AU (1) | AU2005252004A1 (en) |
GB (2) | GB0412979D0 (en) |
WO (1) | WO2005120855A1 (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1778501A2 (en) * | 2004-08-12 | 2007-05-02 | Giesecke & Devrient GmbH | Security element comprising a support |
WO2007080389A2 (en) * | 2006-01-09 | 2007-07-19 | De La Rue International Limited | Optically variable magnetic stripe assembly |
WO2007137306A2 (en) * | 2006-05-24 | 2007-11-29 | Daniel Adam Polakow | A touch indicator |
WO2007138255A1 (en) * | 2006-05-26 | 2007-12-06 | De La Rue International Limited | Improvements in forming security devices |
WO2008049632A1 (en) * | 2006-10-27 | 2008-05-02 | Giesecke & Devrient Gmbh | Security element |
GB2448836A (en) * | 2006-01-09 | 2008-10-29 | Rue De Int Ltd | Optically variable magnetic stripe assembly |
EP2056134A1 (en) * | 2006-08-09 | 2009-05-06 | Nhk Spring Co.Ltd. | Identifying medium, identifying medium manufacturing method, article and identifying medium identifying method |
WO2010115803A3 (en) * | 2009-04-06 | 2011-03-24 | Giesecke & Devrient Gmbh | Liquid crystal-based piezochromic security element |
WO2011060970A1 (en) | 2009-11-18 | 2011-05-26 | Bundesanstalt für Materialforschung und -Prüfung (BAM) | Security label for identifying products |
US20120139230A1 (en) * | 2009-04-14 | 2012-06-07 | De La Rue International Limited | Security device |
DE102011050569A1 (en) * | 2011-05-23 | 2012-11-29 | BAM Bundesanstalt für Materialforschung und -prüfung | Functional liquid container for use as e.g. reusable bottle for mineral water, has wall made of shape memory polymer, where container exhibits capacity volumes in switching states and one of capacity volumes is less than other volume |
CN103093693A (en) * | 2013-02-05 | 2013-05-08 | 南京天朗制药有限公司 | Color anti-fake or temperature indication label and color anti-fake or temperature indication method |
CN103093690A (en) * | 2012-12-04 | 2013-05-08 | 黄为民 | Object with shape memory anti-counterfeiting component and anti-counterfeiting method for object |
EP2349736B1 (en) | 2008-10-24 | 2018-07-11 | Giesecke+Devrient Currency Technology GmbH | Security element having pressure-sensitive appearance |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2771392A2 (en) | 2011-10-28 | 2014-09-03 | BAM Bundesanstalt für Materialforschung und -prüfung | Method and dye mixtures for marking shape memory polymers, and shape memory polymer articles with switchable readability |
AU2017437685A1 (en) * | 2017-10-31 | 2020-04-30 | Alise Devices, S.L. | Method for manufacturing personalised optical document security elements and the element obtained |
CN110753443B (en) * | 2018-07-23 | 2022-03-08 | 浙江清华柔性电子技术研究院 | Method for manufacturing circuit conversion unit |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU488652B2 (en) | 1973-09-26 | 1976-04-01 | Commonwealth Scientific And Industrial Research Organisation | Improvements in or relating to security tokens |
EP0353650A2 (en) * | 1988-08-01 | 1990-02-07 | Mitsubishi Jukogyo Kabushiki Kaisha | Polymeric elastomer composition |
EP0435029A2 (en) | 1989-12-22 | 1991-07-03 | GAO Gesellschaft für Automation und Organisation mbH | Data carrier with a liquid crystal security element |
FR2698390A1 (en) | 1992-11-20 | 1994-05-27 | Arjo Wiggins Sa | Security document which can be authenticated by piezo-optic effect - incorporates liquid crystal which changes state, e.g. colour under pressure. |
EP0701231A1 (en) * | 1994-09-09 | 1996-03-13 | Andreas Singer | Currency or identity document, prepared with metal particles having shape memory |
US6160084A (en) | 1998-02-23 | 2000-12-12 | Massachusetts Institute Of Technology | Biodegradable shape memory polymers |
JP2002006280A (en) * | 2000-06-27 | 2002-01-09 | Dainippon Ink & Chem Inc | Thermally reversible multicolor image recording medium which uses heat sensitive shape memory material and method for image formation in the same |
EP1281538A2 (en) | 2001-07-02 | 2003-02-05 | MERCK PATENT GmbH | Optically variable marking |
WO2003061980A1 (en) | 2002-01-25 | 2003-07-31 | De La Rue International Limited | Improvements in methods of manufacturing substrates |
US6720402B2 (en) | 1998-02-23 | 2004-04-13 | Mnemoscience Gmbh | Shape memory polymers |
-
2004
- 2004-06-10 GB GBGB0412979.7A patent/GB0412979D0/en not_active Ceased
-
2005
- 2005-06-09 EP EP05750255A patent/EP1753627A1/en not_active Withdrawn
- 2005-06-09 AU AU2005252004A patent/AU2005252004A1/en not_active Abandoned
- 2005-06-09 GB GB0511755A patent/GB2414963B/en not_active Expired - Fee Related
- 2005-06-09 WO PCT/GB2005/002271 patent/WO2005120855A1/en not_active Application Discontinuation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU488652B2 (en) | 1973-09-26 | 1976-04-01 | Commonwealth Scientific And Industrial Research Organisation | Improvements in or relating to security tokens |
EP0353650A2 (en) * | 1988-08-01 | 1990-02-07 | Mitsubishi Jukogyo Kabushiki Kaisha | Polymeric elastomer composition |
EP0435029A2 (en) | 1989-12-22 | 1991-07-03 | GAO Gesellschaft für Automation und Organisation mbH | Data carrier with a liquid crystal security element |
FR2698390A1 (en) | 1992-11-20 | 1994-05-27 | Arjo Wiggins Sa | Security document which can be authenticated by piezo-optic effect - incorporates liquid crystal which changes state, e.g. colour under pressure. |
EP0701231A1 (en) * | 1994-09-09 | 1996-03-13 | Andreas Singer | Currency or identity document, prepared with metal particles having shape memory |
US6160084A (en) | 1998-02-23 | 2000-12-12 | Massachusetts Institute Of Technology | Biodegradable shape memory polymers |
US6720402B2 (en) | 1998-02-23 | 2004-04-13 | Mnemoscience Gmbh | Shape memory polymers |
JP2002006280A (en) * | 2000-06-27 | 2002-01-09 | Dainippon Ink & Chem Inc | Thermally reversible multicolor image recording medium which uses heat sensitive shape memory material and method for image formation in the same |
EP1281538A2 (en) | 2001-07-02 | 2003-02-05 | MERCK PATENT GmbH | Optically variable marking |
WO2003061980A1 (en) | 2002-01-25 | 2003-07-31 | De La Rue International Limited | Improvements in methods of manufacturing substrates |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 05 3 May 2002 (2002-05-03) * |
Cited By (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1778501A2 (en) * | 2004-08-12 | 2007-05-02 | Giesecke & Devrient GmbH | Security element comprising a support |
EP1778501B1 (en) * | 2004-08-12 | 2013-07-31 | Giesecke & Devrient GmbH | Security element comprising a support |
AU2005274464C1 (en) * | 2004-08-12 | 2013-07-25 | Giesecke+Devrient Currency Technology Gmbh | Security element comprising a support |
AU2005274464B2 (en) * | 2004-08-12 | 2011-02-10 | Giesecke+Devrient Currency Technology Gmbh | Security element comprising a support |
GB2448836A (en) * | 2006-01-09 | 2008-10-29 | Rue De Int Ltd | Optically variable magnetic stripe assembly |
WO2007080389A3 (en) * | 2006-01-09 | 2008-02-21 | Rue De Int Ltd | Optically variable magnetic stripe assembly |
WO2007080389A2 (en) * | 2006-01-09 | 2007-07-19 | De La Rue International Limited | Optically variable magnetic stripe assembly |
GB2448836B (en) * | 2006-01-09 | 2009-02-18 | Rue De Int Ltd | Optically variable magnetic stripe assembly |
EP2070719A1 (en) * | 2006-01-09 | 2009-06-17 | De La Rue International Limited | Optically variable magnetic stripe assembly |
US8551673B2 (en) | 2006-01-09 | 2013-10-08 | De La Rue International Limited | Optically variable magnetic stripe assembly |
US7931207B2 (en) | 2006-01-09 | 2011-04-26 | De La Rue International Limited | Optically variable magnetic stripe assembly |
WO2007137306A3 (en) * | 2006-05-24 | 2008-01-17 | Daniel Adam Polakow | A touch indicator |
WO2007137306A2 (en) * | 2006-05-24 | 2007-11-29 | Daniel Adam Polakow | A touch indicator |
WO2007138255A1 (en) * | 2006-05-26 | 2007-12-06 | De La Rue International Limited | Improvements in forming security devices |
EP2056134A1 (en) * | 2006-08-09 | 2009-05-06 | Nhk Spring Co.Ltd. | Identifying medium, identifying medium manufacturing method, article and identifying medium identifying method |
EP2056134A4 (en) * | 2006-08-09 | 2012-07-04 | Nhk Spring Co Ltd | Identifying medium, identifying medium manufacturing method, article and identifying medium identifying method |
WO2008049632A1 (en) * | 2006-10-27 | 2008-05-02 | Giesecke & Devrient Gmbh | Security element |
EP2349736B2 (en) † | 2008-10-24 | 2022-01-05 | Giesecke+Devrient Currency Technology GmbH | Security element having pressure-sensitive appearance |
EP2349736B1 (en) | 2008-10-24 | 2018-07-11 | Giesecke+Devrient Currency Technology GmbH | Security element having pressure-sensitive appearance |
EP2818919A1 (en) * | 2009-04-06 | 2014-12-31 | Giesecke & Devrient GmbH | Method of producing a piezochromic printing ink, piezochromic printing ink, and method of producing a security element |
WO2010115803A3 (en) * | 2009-04-06 | 2011-03-24 | Giesecke & Devrient Gmbh | Liquid crystal-based piezochromic security element |
US20120139230A1 (en) * | 2009-04-14 | 2012-06-07 | De La Rue International Limited | Security device |
US9411074B2 (en) * | 2009-04-14 | 2016-08-09 | De La Rue International Limited | Security device |
WO2011060970A1 (en) | 2009-11-18 | 2011-05-26 | Bundesanstalt für Materialforschung und -Prüfung (BAM) | Security label for identifying products |
DE102011050569B4 (en) * | 2011-05-23 | 2013-04-18 | BAM Bundesanstalt für Materialforschung und -prüfung | Functional liquid container |
DE102011050569A1 (en) * | 2011-05-23 | 2012-11-29 | BAM Bundesanstalt für Materialforschung und -prüfung | Functional liquid container for use as e.g. reusable bottle for mineral water, has wall made of shape memory polymer, where container exhibits capacity volumes in switching states and one of capacity volumes is less than other volume |
CN103093690A (en) * | 2012-12-04 | 2013-05-08 | 黄为民 | Object with shape memory anti-counterfeiting component and anti-counterfeiting method for object |
CN103093693A (en) * | 2013-02-05 | 2013-05-08 | 南京天朗制药有限公司 | Color anti-fake or temperature indication label and color anti-fake or temperature indication method |
Also Published As
Publication number | Publication date |
---|---|
GB2414963A (en) | 2005-12-14 |
AU2005252004A1 (en) | 2005-12-22 |
GB2414963B (en) | 2006-07-19 |
EP1753627A1 (en) | 2007-02-21 |
GB0511755D0 (en) | 2005-07-20 |
GB0412979D0 (en) | 2004-07-14 |
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