GB2568760A - Security devices and methods of manufacture therefor - Google Patents
Security devices and methods of manufacture therefor Download PDFInfo
- Publication number
- GB2568760A GB2568760A GB1719774.0A GB201719774A GB2568760A GB 2568760 A GB2568760 A GB 2568760A GB 201719774 A GB201719774 A GB 201719774A GB 2568760 A GB2568760 A GB 2568760A
- Authority
- GB
- United Kingdom
- Prior art keywords
- liquid crystal
- layer
- crystal layer
- polariser
- security
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 101
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 318
- 239000000758 substrate Substances 0.000 claims abstract description 184
- 239000000463 material Substances 0.000 claims abstract description 69
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims description 23
- 239000000853 adhesive Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 16
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 14
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 4
- 239000004642 Polyimide Substances 0.000 claims description 3
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000011888 foil Substances 0.000 claims description 2
- 229920001225 polyester resin Polymers 0.000 claims description 2
- 239000004645 polyester resin Substances 0.000 claims description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 2
- 229920002554 vinyl polymer Polymers 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 239000010410 layer Substances 0.000 description 320
- 230000000007 visual effect Effects 0.000 description 40
- 238000007639 printing Methods 0.000 description 18
- 239000000123 paper Substances 0.000 description 17
- 230000000694 effects Effects 0.000 description 16
- 230000003287 optical effect Effects 0.000 description 12
- 230000003245 working effect Effects 0.000 description 10
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 7
- -1 polyethylene Polymers 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- 235000019422 polyvinyl alcohol Nutrition 0.000 description 7
- 239000004698 Polyethylene Substances 0.000 description 6
- 239000000976 ink Substances 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 230000008901 benefit Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 230000005670 electromagnetic radiation Effects 0.000 description 4
- 230000003746 surface roughness Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 241000283070 Equus zebra Species 0.000 description 2
- 239000004990 Smectic liquid crystal Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010023 transfer printing Methods 0.000 description 2
- 238000001429 visible spectrum Methods 0.000 description 2
- ZRMIETZFPZGBEB-UHFFFAOYSA-N 4-(4-hydroxyphenyl)benzonitrile Chemical compound C1=CC(O)=CC=C1C1=CC=C(C#N)C=C1 ZRMIETZFPZGBEB-UHFFFAOYSA-N 0.000 description 1
- 239000005212 4-Cyano-4'-pentylbiphenyl Substances 0.000 description 1
- HHPCNRKYVYWYAU-UHFFFAOYSA-N 4-cyano-4'-pentylbiphenyl Chemical group C1=CC(CCCCC)=CC=C1C1=CC=C(C#N)C=C1 HHPCNRKYVYWYAU-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- 239000004988 Nematic liquid crystal Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000307 polymer substrate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000007651 thermal printing Methods 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000002211 ultraviolet spectrum Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/28—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating
- B41M5/281—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using thermochromic compounds or layers containing liquid crystals, microcapsules, bleachable dyes or heat- decomposable compounds, e.g. gas- liberating using liquid crystals only
-
- 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
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- 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
- 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
- B42D25/378—Special inks
- B42D25/391—Special inks absorbing or reflecting polarised light
-
- 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
- B42D25/40—Manufacture
- B42D25/45—Associating two or more layers
- B42D25/455—Associating two or more layers using heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
- B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
- B44C1/17—Dry transfer
- B44C1/1712—Decalcomanias applied under heat and pressure, e.g. provided with a heat activable adhesive
- B44C1/1729—Hot stamping techniques
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
Landscapes
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Polarising Elements (AREA)
- Credit Cards Or The Like (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1719774.0A GB2568760A (en) | 2017-11-28 | 2017-11-28 | Security devices and methods of manufacture therefor |
| PCT/GB2018/053412 WO2019106349A1 (fr) | 2017-11-28 | 2018-11-26 | Dispositifs de sécurité et procédés de fabrication associés |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1719774.0A GB2568760A (en) | 2017-11-28 | 2017-11-28 | Security devices and methods of manufacture therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB201719774D0 GB201719774D0 (en) | 2018-01-10 |
| GB2568760A true GB2568760A (en) | 2019-05-29 |
Family
ID=60950607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1719774.0A Withdrawn GB2568760A (en) | 2017-11-28 | 2017-11-28 | Security devices and methods of manufacture therefor |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2568760A (fr) |
| WO (1) | WO2019106349A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021079815A1 (fr) * | 2019-10-23 | 2021-04-29 | 日本ゼオン株式会社 | Matière et joint de transfert de couche durcie de cristaux liquides et procédé d'évaluation de l'authenticité d'un joint de transfert de couche durcie de cristaux liquides |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2357061A (en) * | 1999-12-08 | 2001-06-13 | Merck Patent Gmbh | Hot stamping foils |
| US20030178609A1 (en) * | 2002-02-06 | 2003-09-25 | Merck Patent Gmbh | Birefringent film and its use |
| JP2014024208A (ja) * | 2012-07-25 | 2014-02-06 | Toppan Printing Co Ltd | 転写箔及びその転写物 |
| US20170157972A1 (en) * | 2014-06-30 | 2017-06-08 | Zeon Corporation | Identification medium, method for producing identification medium, and method for using identification medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005065962A1 (fr) * | 2004-01-12 | 2005-07-21 | Securency Pty Limited | Document de securite equipe d'un composant optique |
| AU2016228948A1 (en) * | 2015-03-06 | 2017-10-26 | Ccl Secure Pty Ltd | A hidden image security device and method |
-
2017
- 2017-11-28 GB GB1719774.0A patent/GB2568760A/en not_active Withdrawn
-
2018
- 2018-11-26 WO PCT/GB2018/053412 patent/WO2019106349A1/fr not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2357061A (en) * | 1999-12-08 | 2001-06-13 | Merck Patent Gmbh | Hot stamping foils |
| US20030178609A1 (en) * | 2002-02-06 | 2003-09-25 | Merck Patent Gmbh | Birefringent film and its use |
| JP2014024208A (ja) * | 2012-07-25 | 2014-02-06 | Toppan Printing Co Ltd | 転写箔及びその転写物 |
| US20170157972A1 (en) * | 2014-06-30 | 2017-06-08 | Zeon Corporation | Identification medium, method for producing identification medium, and method for using identification medium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021079815A1 (fr) * | 2019-10-23 | 2021-04-29 | 日本ゼオン株式会社 | Matière et joint de transfert de couche durcie de cristaux liquides et procédé d'évaluation de l'authenticité d'un joint de transfert de couche durcie de cristaux liquides |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019106349A1 (fr) | 2019-06-06 |
| GB201719774D0 (en) | 2018-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |