JP2003185835A - Authenticity identifying body and transfer sheet with authenticity identifying structure - Google Patents
Authenticity identifying body and transfer sheet with authenticity identifying structureInfo
- Publication number
- JP2003185835A JP2003185835A JP2001382513A JP2001382513A JP2003185835A JP 2003185835 A JP2003185835 A JP 2003185835A JP 2001382513 A JP2001382513 A JP 2001382513A JP 2001382513 A JP2001382513 A JP 2001382513A JP 2003185835 A JP2003185835 A JP 2003185835A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- liquid crystal
- authenticity
- cholesteric liquid
- laminated
- 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.)
- Granted
Links
- 239000010410 layer Substances 0.000 claims abstract description 176
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims abstract description 97
- 239000011241 protective layer Substances 0.000 claims abstract description 44
- 239000012790 adhesive layer Substances 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 17
- 239000004973 liquid crystal related substance Substances 0.000 claims description 12
- 230000003098 cholesteric effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 229920005989 resin Polymers 0.000 description 41
- 239000011347 resin Substances 0.000 description 41
- 230000005865 ionizing radiation Effects 0.000 description 32
- -1 polyethylene terephthalate Polymers 0.000 description 21
- 239000011342 resin composition Substances 0.000 description 16
- 239000000047 product Substances 0.000 description 15
- 238000000576 coating method Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 11
- 239000000178 monomer Substances 0.000 description 9
- 230000003287 optical effect Effects 0.000 description 9
- 229920003023 plastic Polymers 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 239000004033 plastic Substances 0.000 description 7
- 125000000524 functional group Chemical group 0.000 description 6
- 239000003999 initiator Substances 0.000 description 6
- 239000000123 paper Substances 0.000 description 6
- 239000002985 plastic film Substances 0.000 description 6
- 229920006254 polymer film Polymers 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- 229920001187 thermosetting polymer Polymers 0.000 description 5
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000005264 High molar mass liquid crystal Substances 0.000 description 3
- 239000004952 Polyamide Substances 0.000 description 3
- 239000004642 Polyimide Substances 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 229920006026 co-polymeric resin Polymers 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
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- 238000010894 electron beam technology Methods 0.000 description 3
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- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 3
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- 239000005020 polyethylene terephthalate Substances 0.000 description 3
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- 239000005060 rubber Substances 0.000 description 3
- INQDDHNZXOAFFD-UHFFFAOYSA-N 2-[2-(2-prop-2-enoyloxyethoxy)ethoxy]ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOCCOC(=O)C=C INQDDHNZXOAFFD-UHFFFAOYSA-N 0.000 description 2
- FIHBHSQYSYVZQE-UHFFFAOYSA-N 6-prop-2-enoyloxyhexyl prop-2-enoate Chemical compound C=CC(=O)OCCCCCCOC(=O)C=C FIHBHSQYSYVZQE-UHFFFAOYSA-N 0.000 description 2
- 229920002284 Cellulose triacetate Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 description 2
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
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- 239000002131 composite material Substances 0.000 description 2
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- 229920006122 polyamide resin Polymers 0.000 description 2
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- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
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- MYWOJODOMFBVCB-UHFFFAOYSA-N 1,2,6-trimethylphenanthrene Chemical compound CC1=CC=C2C3=CC(C)=CC=C3C=CC2=C1C MYWOJODOMFBVCB-UHFFFAOYSA-N 0.000 description 1
- KAJBSGLXSREIHP-UHFFFAOYSA-N 2,2-bis[(2-sulfanylacetyl)oxymethyl]butyl 2-sulfanylacetate Chemical compound SCC(=O)OCC(CC)(COC(=O)CS)COC(=O)CS KAJBSGLXSREIHP-UHFFFAOYSA-N 0.000 description 1
- FEWSKCAVEJNPBX-UHFFFAOYSA-N 2-(2-hydroxy-2-phenylacetyl)benzenesulfonic acid Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1S(O)(=O)=O FEWSKCAVEJNPBX-UHFFFAOYSA-N 0.000 description 1
- JJBFVQSGPLGDNX-UHFFFAOYSA-N 2-(2-methylprop-2-enoyloxy)propyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(C)COC(=O)C(C)=C JJBFVQSGPLGDNX-UHFFFAOYSA-N 0.000 description 1
- DPBJAVGHACCNRL-UHFFFAOYSA-N 2-(dimethylamino)ethyl prop-2-enoate Chemical compound CN(C)CCOC(=O)C=C DPBJAVGHACCNRL-UHFFFAOYSA-N 0.000 description 1
- PTJDGKYFJYEAOK-UHFFFAOYSA-N 2-butoxyethyl prop-2-enoate Chemical compound CCCCOCCOC(=O)C=C PTJDGKYFJYEAOK-UHFFFAOYSA-N 0.000 description 1
- FEWFXBUNENSNBQ-UHFFFAOYSA-N 2-hydroxyacrylic acid Chemical compound OC(=C)C(O)=O FEWFXBUNENSNBQ-UHFFFAOYSA-N 0.000 description 1
- BQZJOQXSCSZQPS-UHFFFAOYSA-N 2-methoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OC)C(=O)C1=CC=CC=C1 BQZJOQXSCSZQPS-UHFFFAOYSA-N 0.000 description 1
- YXYJVFYWCLAXHO-UHFFFAOYSA-N 2-methoxyethyl 2-methylprop-2-enoate Chemical compound COCCOC(=O)C(C)=C YXYJVFYWCLAXHO-UHFFFAOYSA-N 0.000 description 1
- HFCUBKYHMMPGBY-UHFFFAOYSA-N 2-methoxyethyl prop-2-enoate Chemical compound COCCOC(=O)C=C HFCUBKYHMMPGBY-UHFFFAOYSA-N 0.000 description 1
- RZVINYQDSSQUKO-UHFFFAOYSA-N 2-phenoxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC1=CC=CC=C1 RZVINYQDSSQUKO-UHFFFAOYSA-N 0.000 description 1
- VFZKVQVQOMDJEG-UHFFFAOYSA-N 2-prop-2-enoyloxypropyl prop-2-enoate Chemical compound C=CC(=O)OC(C)COC(=O)C=C VFZKVQVQOMDJEG-UHFFFAOYSA-N 0.000 description 1
- GAKWESOCALHOKH-UHFFFAOYSA-N 4-methoxybutyl prop-2-enoate Chemical compound COCCCCOC(=O)C=C GAKWESOCALHOKH-UHFFFAOYSA-N 0.000 description 1
- RWHRFHQRVDUPIK-UHFFFAOYSA-N 50867-57-7 Chemical class CC(=C)C(O)=O.CC(=C)C(O)=O RWHRFHQRVDUPIK-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920001747 Cellulose diacetate Polymers 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000001856 Ethyl cellulose Substances 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 101100321670 Fagopyrum esculentum FA18 gene Proteins 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 239000000020 Nitrocellulose Substances 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000004693 Polybenzimidazole Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 244000028419 Styrax benzoin Species 0.000 description 1
- 235000000126 Styrax benzoin Nutrition 0.000 description 1
- 235000008411 Sumatra benzointree Nutrition 0.000 description 1
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 1
- DAKWPKUUDNSNPN-UHFFFAOYSA-N Trimethylolpropane triacrylate Chemical compound C=CC(=O)OCC(CC)(COC(=O)C=C)COC(=O)C=C DAKWPKUUDNSNPN-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- HVVWZTWDBSEWIH-UHFFFAOYSA-N [2-(hydroxymethyl)-3-prop-2-enoyloxy-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(CO)(COC(=O)C=C)COC(=O)C=C HVVWZTWDBSEWIH-UHFFFAOYSA-N 0.000 description 1
- RUDUCNPHDIMQCY-UHFFFAOYSA-N [3-(2-sulfanylacetyl)oxy-2,2-bis[(2-sulfanylacetyl)oxymethyl]propyl] 2-sulfanylacetate Chemical compound SCC(=O)OCC(COC(=O)CS)(COC(=O)CS)COC(=O)CS RUDUCNPHDIMQCY-UHFFFAOYSA-N 0.000 description 1
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 1
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- UGZICOVULPINFH-UHFFFAOYSA-N acetic acid;butanoic acid Chemical compound CC(O)=O.CCCC(O)=O UGZICOVULPINFH-UHFFFAOYSA-N 0.000 description 1
- 150000008062 acetophenones Chemical class 0.000 description 1
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 229960002130 benzoin Drugs 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- 150000008366 benzophenones Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 238000010538 cationic polymerization reaction Methods 0.000 description 1
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- 229920001727 cellulose butyrate Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 229920005994 diacetyl cellulose Polymers 0.000 description 1
- 125000004386 diacrylate group Chemical group 0.000 description 1
- 239000012954 diazonium Substances 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- GMSCBRSQMRDRCD-UHFFFAOYSA-N dodecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCOC(=O)C(C)=C GMSCBRSQMRDRCD-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 125000003700 epoxy group Chemical group 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000005745 ethoxymethyl group Chemical group [H]C([H])([H])C([H])([H])OC([H])([H])* 0.000 description 1
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 description 1
- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 229920001249 ethyl cellulose Polymers 0.000 description 1
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- 235000019382 gum benzoic Nutrition 0.000 description 1
- 239000012793 heat-sealing layer Substances 0.000 description 1
- HRKWOOHVRHBXHJ-UHFFFAOYSA-N hexan-2-yl prop-2-enoate Chemical compound CCCCC(C)OC(=O)C=C HRKWOOHVRHBXHJ-UHFFFAOYSA-N 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000002535 lyotropic effect Effects 0.000 description 1
- 150000002689 maleic acids Chemical class 0.000 description 1
- 150000007974 melamines Chemical class 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- YDKNBNOOCSNPNS-UHFFFAOYSA-N methyl 1,3-benzoxazole-2-carboxylate Chemical compound C1=CC=C2OC(C(=O)OC)=NC2=C1 YDKNBNOOCSNPNS-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229920001220 nitrocellulos Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- QIWKUEJZZCOPFV-UHFFFAOYSA-N phenyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC1=CC=CC=C1 QIWKUEJZZCOPFV-UHFFFAOYSA-N 0.000 description 1
- WRAQQYDMVSCOTE-UHFFFAOYSA-N phenyl prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1 WRAQQYDMVSCOTE-UHFFFAOYSA-N 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- FSDNTQSJGHSJBG-UHFFFAOYSA-N piperidine-4-carbonitrile Chemical compound N#CC1CCNCC1 FSDNTQSJGHSJBG-UHFFFAOYSA-N 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920002480 polybenzimidazole Polymers 0.000 description 1
- 229920005668 polycarbonate resin Polymers 0.000 description 1
- 239000004431 polycarbonate resin Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- QCTJRYGLPAFRMS-UHFFFAOYSA-N prop-2-enoic acid;1,3,5-triazine-2,4,6-triamine Chemical compound OC(=O)C=C.NC1=NC(N)=NC(N)=N1 QCTJRYGLPAFRMS-UHFFFAOYSA-N 0.000 description 1
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical compound C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 1
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000010981 turquoise Substances 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/0005—Adaptation of holography to specific applications
- G03H1/0011—Adaptation of holography to specific applications for security or authentication
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
- G03H1/0252—Laminate comprising a hologram layer
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2250/00—Laminate comprising a hologram layer
- G03H2250/14—Forming layer onto which a surface relief hologram is formed
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2250/00—Laminate comprising a hologram layer
- G03H2250/38—Liquid crystal
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H2250/00—Laminate comprising a hologram layer
- G03H2250/41—Polarisation active layer
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Laminated Bodies (AREA)
- Credit Cards Or The Like (AREA)
- Liquid Crystal (AREA)
- Polarising Elements (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Holo Graphy (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ホログラム等の光
回折構造の微細凹凸を有するコレステリック液晶層が、
微細凹凸側に耐熱性向上層を伴なった真正性識別構造
を、カード類、有価証券類等の情報記録媒体を代表とす
る真正性識別対象物に適用した真正性識別体、およびそ
のような真正性識別体を製造するための転写シートに関
するものである。TECHNICAL FIELD The present invention relates to a cholesteric liquid crystal layer having fine irregularities of a light diffraction structure such as a hologram,
An authenticity discriminating body in which an authenticity discriminating structure having a heat resistance improving layer on the side of fine irregularities is applied to an authenticity discriminating object represented by an information recording medium such as cards and securities, and such a discriminating body. The present invention relates to a transfer sheet for manufacturing an authenticity discriminating body.
【０００２】[0002]
【従来の技術】クレジットカードや預貯金用カードは、
偽造されて使用されると、カードの保持者やカード会社
もしくは金融機関に損害を与え得る。同様に偽造が問題
となるものとしては、運転免許証、社員証、会員証等の
身分証明書、入学試験用の受験票、パスポート等、紙
幣、商品券、ポイントカード、株券、証券、抽選券、馬
券、預金通帳、乗車券、通行券、航空券、種々の催事の
入場券、遊戯券、交通機関や公衆電話用のプリペイドカ
ード等がある。これらはいずれも、経済的、もしくは社
会的な価値を有する情報を保持した情報記録媒体であ
り、偽造による損害を防止する目的で、そのものの真正
性を識別できる機能を有することが望まれる。2. Description of the Related Art Credit cards and deposit and savings cards are
If it is forged and used, it may damage the cardholder, card company or financial institution. Similarly, forgery is a problem, such as driver's license, employee ID, identification card such as membership card, entrance examination admission ticket, passport, banknote, gift certificate, point card, stock certificate, securities, lottery ticket , Betting tickets, passbooks, tickets, pass tickets, airline tickets, admission tickets for various events, amusement tickets, prepaid cards for transportation and public phones. Each of these is an information recording medium that holds information having economic or social value, and it is desirable that it has a function of identifying its authenticity for the purpose of preventing damage due to forgery.
【０００３】また、これら情報記録媒体以外であって
も、高額商品、例えば、高級腕時計、高級皮革製品、貴
金属製品、もしくは宝飾品等の、しばしば、高級ブラン
ド品と言われるもの、または、それら高額商品の収納箱
やケース等も偽造され得るものである。また、量産品で
も有名ブランドのもの、例えば、オーディオ製品、電化
製品等、または、それらに吊り下げられるタグも、偽造
の対象となりやすい。さらに、著作物である音楽ソフ
ト、映像ソフト、コンピュータソフト、もしくはゲーム
ソフト等が記録された記憶媒体、またはそれらのケース
等も、やはり偽造の対象となり得る。これらのものも偽
造による損害を防止する目的で、そのものの真正性を識
別できる機能を有することが望まれる。In addition to these information recording media, high-priced products, such as high-end watches, high-grade leather products, precious metal products, and jewelry, which are often referred to as high-end brand products, or those high-priced products A product storage box or case can also be forged. In addition, mass-produced products of well-known brands, such as audio products, electric appliances, etc., or tags hung on them are also likely to be targets of forgery. Further, a storage medium in which copyrighted music software, video software, computer software, game software, or the like, or a case thereof, can also be forged. It is desirable that these items also have a function of identifying their authenticity for the purpose of preventing damage due to forgery.
【０００４】従来、情報記録媒体や上記した種々の物品
（総称して、真正性識別対象物と言う。）の偽造を防止
する目的で、その構造の精密さから、製造上の困難性を
有すると言われるホログラムを真正性の識別可能なもの
（真正性識別構造と言う。）として適用することが多く
行なわれている。しかしながら、ホログラムの製造方法
自体は知られており、ホログラムが単に目視するだけの
ホログラムであるときは、もともと精密なものであるだ
けに、真正なホログラムと偽造されたホログラムとの区
別は困難である。Conventionally, in order to prevent counterfeiting of information recording media and the above-mentioned various articles (generically referred to as authenticity identification objects), the precision of their structure causes difficulty in manufacturing. Then, it is often practiced to apply the so-called hologram as an authenticity identifiable one (referred to as an authenticity identification structure). However, the hologram manufacturing method itself is known, and when the hologram is a hologram that can only be visually observed, it is difficult to distinguish between a genuine hologram and a counterfeit hologram because it is originally a precise hologram. .
【０００５】一般的なホログラムは、合成樹脂、中でも
紫外線硬化性樹脂を用いて形成され、その硬化した樹脂
の層の表面に、ホログラムの干渉縞が微細凹凸として形
成されたものであるが、近年、コレステリック液晶を含
有する層が左円偏光もしくは右円偏光のいずれかを反射
する性質を有し、従って、左円偏光板もしくは右円偏光
板のいずれかを用いた場合にのみ、色が見える特性を有
し、また、層の表面にホログラム等の微細凹凸を形成し
得ることから、コレステリック液晶層をホログラム等の
光回折構造を形成するための層として利用した真正性識
別構造は、合成樹脂、もしくは紫外線硬化性樹脂を用い
た場合にくらべて、偽造防止に対する抵抗性が増すので
好ましい。A general hologram is formed by using a synthetic resin, in particular, an ultraviolet curable resin, and interference fringes of the hologram are formed as fine irregularities on the surface of the cured resin layer. , A layer containing a cholesteric liquid crystal has a property of reflecting either left-handed circularly polarized light or right-handed circularly polarized light, and therefore the color is visible only when either the left-handed circularly polarizing plate or the right-handed circularly polarizing plate is used. Since it has characteristics and can form fine irregularities such as holograms on the surface of the layer, the authenticity identification structure using the cholesteric liquid crystal layer as a layer for forming an optical diffraction structure such as a hologram is a synthetic resin. Alternatively, it is preferable because the resistance against forgery is increased as compared with the case where the ultraviolet curable resin is used.
【０００６】しかしながら、上記のコレステリック液晶
層からなる真正性識別構造は、一般的なホログラム形成
用材料を用いて得られる真正性識別構造にくらべると、
耐熱性が不十分であり、特に、ホログラム等の光回折構
造を、熱と圧力をかけつつ情報記録媒体に適用するホッ
トスタンプ方式による適用する際には、ホログラム等の
光回折構造の微細凹凸が加熱や加圧によって消失しやす
く、コレステリック液晶層からなる真正性識別構造が適
用された真正性識別対象物も、真正性識別構造の耐熱性
が不十分なものとなりやすい。However, the authenticity discriminating structure composed of the above cholesteric liquid crystal layer is different from the authenticity discriminating structure obtained by using a general hologram forming material.
Insufficient heat resistance, especially when applying a light diffractive structure such as a hologram by a hot stamp method which is applied to an information recording medium while applying heat and pressure, fine unevenness of the light diffractive structure such as a hologram is generated. It is easily lost by heating or pressurization, and the authenticity identification target to which the authenticity identification structure composed of the cholesteric liquid crystal layer is applied is likely to have insufficient heat resistance of the authenticity identification structure.
【０００７】[0007]
【発明が解決しようとする課題】本発明においては、従
来、コレステリック液晶層からなるホログラム等の光回
折構造が形成された真正性識別構造が、真正性識別対象
物に適用する際の耐熱性、および真正性識別対象物に適
用した後の耐熱性が不十分であった点を解消することを
課題とする。In the present invention, conventionally, an authenticity identifying structure having a light diffraction structure such as a hologram formed of a cholesteric liquid crystal layer is heat resistant when applied to an authenticity identifying object, Another object is to solve the problem that the heat resistance after application to the authenticity identification target is insufficient.
【０００８】[0008]
【課題を解決する手段】本発明においては、ホログラム
等の光回折構造が微細凹凸として形成されたコレステリ
ック液晶層からなる真正性識別構造の微細凹凸側に、耐
熱性向上層を積層して付与することにより、上記の課題
を解決することができた。In the present invention, a heat resistance improving layer is laminated and provided on the fine irregularities side of the authenticity identifying structure formed of a cholesteric liquid crystal layer in which a light diffraction structure such as a hologram is formed as fine irregularities. As a result, the above problems could be solved.
【０００９】第１の発明は、真正性識別対象物上に、必
要に応じて接着剤層を介し、少なくとも、耐熱性向上
層、および前記真正性識別対象物側の面に光回折構造の
微細凹凸を有するコレステリック液晶層が順に積層され
たことを特徴とする真正性識別構造を備えた真正性識別
体に関するものである。第２の発明は、第１の発明にお
いて、前記コレステリック液晶層の前記耐熱性向上層が
積層されたのとは反対側に保護層が積層されたことを特
徴とする真正性識別構造を備えた真正性識別体に関する
ものである。第３の発明は、第１または第２の発明にお
いて、前記真正性識別構造を備えた真正性識別対象物が
情報記録媒体であることを特徴とする真正性識別構造を
備えた真正性識別体に関するものである。第４の発明
は、離型性シート状基材の離型性面に転写層が積層され
ており、前記転写層は、前記離型性シート状基材側か
ら、少なくとも、保護層、前記離型性シート状基材側と
は反対側の面に光回折構造の微細凹凸を有するコレステ
リック液晶層、耐熱性向上層、および接着剤層が順に積
層した構造からなるものであることを特徴とする真正性
識別構造転写シートに関するものである。第５の発明
は、第４の発明において、前記コレステリック液晶層の
前記離型性シート状基材側に保護層が積層されたことを
特徴とする真正性識別構造転写シートに関するものであ
る。A first aspect of the present invention is such that, on an authenticity identifying object, an adhesive layer is provided if necessary, and at least a heat resistance improving layer, and a surface of the authenticity identifying object are provided with a fine optical diffraction structure. The present invention relates to an authenticity discriminating body having an authenticity discriminating structure characterized in that cholesteric liquid crystal layers having irregularities are sequentially laminated. A second invention comprises the authenticity identifying structure according to the first invention, characterized in that a protective layer is laminated on the side of the cholesteric liquid crystal layer opposite to the layer on which the heat resistance improving layer is laminated. The present invention relates to an authentic discriminator. A third aspect of the present invention is the authenticity discriminating body having the authenticity discriminating structure according to the first or second aspect, wherein the authenticity discriminating object having the authenticity discriminating structure is an information recording medium. It is about. A fourth invention is that a transfer layer is laminated on a releasable surface of a releasable sheet-like substrate, and the transfer layer is at least a protective layer and the release layer from the releasable sheet-like substrate side. It is characterized by comprising a structure in which a cholesteric liquid crystal layer having fine irregularities of a light diffractive structure, a heat resistance improving layer, and an adhesive layer are laminated in this order on the surface opposite to the side of the formable sheet substrate. The present invention relates to an authenticity identification structure transfer sheet. A fifth aspect of the present invention relates to the authentic identification structure transfer sheet according to the fourth aspect, wherein a protective layer is laminated on the releasable sheet-shaped substrate side of the cholesteric liquid crystal layer.
【００１０】[0010]
【発明の実施の形態】図１は本発明の真正性識別体の断
面図である。本発明の真正性識別体１は、基本的には、
真正性識別対象物２上に、接着剤層３、耐熱性向上層
４、コレステリック液晶層５、および保護層６が順に積
層された積層構造を有するものであり、コレステリック
液晶層５は、真正性識別対象物２側の面に光回折構造の
微細凹凸５ａを有するものである。FIG. 1 is a sectional view of an authenticity discriminating body of the present invention. The authenticity discriminator 1 of the present invention is basically
The authenticity identification object 2 has a laminated structure in which an adhesive layer 3, a heat resistance improving layer 4, a cholesteric liquid crystal layer 5, and a protective layer 6 are laminated in this order, and the cholesteric liquid crystal layer 5 has an authenticity. The surface on the side of the identification object 2 has fine irregularities 5a of a light diffraction structure.
【００１１】真正性識別対象物２は、従来技術の説明に
おいて挙げた情報記録媒体やその他の種々の物品であ
る。従って、素材としては、物品によって、プラスチッ
ク、布、紙、木、皮革、金属、もしくは石材等、または
それらの任意の組み合わせからなる複合体であり得る。The authenticity identifying object 2 is the information recording medium and various other articles mentioned in the description of the prior art. Therefore, the material may be a composite material made of plastic, cloth, paper, wood, leather, metal, stone, or the like, or any combination thereof, depending on the article.
【００１２】真正性識別対象物２が情報記録媒体である
ときは、基本的には、紙、プラスチック、もしくは紙と
プラスチックの複合体を素材とすることが多い。プラス
チック単独の場合には、プラスチックフィルム、プラス
チックシート、もしくはプラスチック板の単層、もしく
は複層の積層体を素材とすることができる。When the authenticity identifying object 2 is an information recording medium, it is basically made of paper, plastic, or a composite of paper and plastic. When the plastic is used alone, a single layer of a plastic film, a plastic sheet, or a plastic plate, or a laminate of multiple layers can be used as a material.
【００１３】上記のプラスチックとしては、ポリ塩化ビ
ニル、ポリエチレンテレフタレート（以下、ＰＥＴと略
称することがある。）もしくはポリエチレンナフタレー
ト等のポリエステル、ポリカーボネート、ポリアミド、
ポリイミド、セルロースジアセテート、セルローストリ
アセテート、ポリスチレン系、アクリル、ポリプロピレ
ン、ポリエチレン、ＡＢＳなどの樹脂が挙げられる。Examples of the above-mentioned plastics include polyesters such as polyvinyl chloride, polyethylene terephthalate (hereinafter sometimes abbreviated as PET) or polyethylene naphthalate, polycarbonates, polyamides,
Resins such as polyimide, cellulose diacetate, cellulose triacetate, polystyrene, acryl, polypropylene, polyethylene and ABS can be used.
【００１４】塩素を含まず、加工性の優れた樹脂として
は、非晶質ポリエステル樹脂（例えば、イーストマンコ
ダック社製、「ＰＥＴ−Ｇ」）が好ましく、さらに耐熱
性を要する場合には、非晶質ポリエステル樹脂とポリカ
ーボネート樹脂のブレンド樹脂が好ましい。この「ＰＥ
Ｔ−Ｇ」としては、例えば、ジカルボン酸成分がテレフ
タル酸であり、ジオール成分がエチレングリコール／
１，４−シクロヘキサンジメタノール＝７０／３０（質
量比）のものがある。Amorphous polyester resin (for example, "PET-G" manufactured by Eastman Kodak Co.) is preferable as a resin which does not contain chlorine and is excellent in processability. A blend resin of a crystalline polyester resin and a polycarbonate resin is preferable. This "PE
"TG" includes, for example, a dicarboxylic acid component of terephthalic acid and a diol component of ethylene glycol /
1,4-cyclohexanedimethanol = 70/30 (mass ratio).
【００１５】真正性識別対象物が磁気カード等のカード
である場合、その厚みを０．７６ｍｍとすることが好ま
しい。例えば、厚み２８０μｍの白色プラスチックシー
トをコアシートとして、これを２枚重ね、重ねた両側に
それぞれ厚み１００μｍの透明プラスチックシートをオ
ーバーシートとして重ねて、熱プレスなどにより積層す
る４層構成の基材（合計厚み０．７６ｍｍ）を用いると
よい。When the authenticity identification object is a card such as a magnetic card, the thickness thereof is preferably 0.76 mm. For example, a white plastic sheet having a thickness of 280 μm is used as a core sheet, two sheets are stacked, and a transparent plastic sheet having a thickness of 100 μm is overlaid on both sides of the core sheet as an oversheet, and a base material having a four-layer structure ( A total thickness of 0.76 mm) may be used.
【００１６】真正性識別対象物２が情報記録媒体である
ときは、通常、種々の文字、図柄等、または着色が、印
刷、もしくはコーティング、または転写等によって、施
されていてもよい。クレジットカードを例にとっても、
文字としては、カードの名称、発行会社名、もしくは内
容自体はエンボスにより表示されることが多い氏名、有
効期限の項目名、注意書等があり得る。図柄としては、
カードの種類を特徴付ける図柄やキャクター等があり得
る。When the authenticity identifying object 2 is an information recording medium, various characters, patterns, etc., or coloring may usually be applied by printing, coating, transfer or the like. Taking a credit card as an example,
The characters may be the name of the card, the name of the issuing company, or the name of the contents often displayed by embossing, the item name of the expiration date, a note, etc. As a design,
There may be patterns, characters, etc. that characterize the type of card.
【００１７】接着剤層３は、塩化ビニル系、酢酸ビニル
系、塩化ビニル−酢酸ビニル共重合体系、アクリル系、
ポリエステル系、ポリウレタン系、ポリアミド系、もし
くはゴム変性物系等の樹脂単独、もしくは２種以上の混
合系のものの中から、耐熱性向上層４および真正性識別
対象物２を構成する素材に応じて選択し使用する。The adhesive layer 3 is made of vinyl chloride, vinyl acetate, vinyl chloride-vinyl acetate copolymer, acrylic,
Depending on the material constituting the heat resistance improving layer 4 and the authenticity identifying target 2 from among resins such as polyester, polyurethane, polyamide, or rubber modified material alone or a mixture of two or more kinds. Select and use.
【００１８】コレステリック液晶層５としては、液晶配
向を固定化した高分子フィルム、もしくはコレステリッ
ク液晶を適宜な樹脂中に分散したもの等、光学的に選択
反射性及び円偏光選択性を示す媒体すべてを用いること
が可能であるが、特に液晶配向を固定化した高分子フィ
ルムを好適に用いることができる。As the cholesteric liquid crystal layer 5, any medium exhibiting optically selective reflection and circularly polarized light selectivity, such as a polymer film having a fixed liquid crystal orientation or a dispersion of cholesteric liquid crystal in an appropriate resin, is used. Although it can be used, a polymer film having a fixed liquid crystal alignment can be preferably used.
【００１９】液晶配向を固定化した高分子フィルムの例
としては、低分子液晶をコレステリック配向させた後、
光反応又は熱反応などで低分子液晶を架橋して配向固定
化した高分子フィルムをあげることができる。また、他
の例としては、側鎖型又は主鎖型のサーモトロピック高
分子液晶を液晶状態でコレステリック配向させた後、液
晶転移点以下の温度に冷却して、配向状態を固定化して
作製した高分子フィルムをあげることができる。さら
に、側鎖型又は主鎖型のリオトロピック高分子液晶を溶
液中でコレステリック配向させた後、溶媒を徐々に除去
することによって配向状態を固定化して作製した高分子
フィルムを用いることもできる。As an example of the polymer film in which the liquid crystal alignment is fixed, a low molecular liquid crystal is cholesterically aligned, and
A polymer film in which a low-molecular liquid crystal is cross-linked by photoreaction or heat reaction to fix the orientation can be mentioned. As another example, after the side chain type or main chain type thermotropic polymer liquid crystal is cholesterically aligned in the liquid crystal state, it is cooled to a temperature not higher than the liquid crystal transition point, and the alignment state is fixed and produced. Polymer films can be mentioned. Further, it is also possible to use a polymer film prepared by lyotropically polymerizing a side chain type or main chain type lyotropic polymer liquid crystal in a solution and then gradually removing the solvent to fix the alignment state.
【００２０】これらフィルム作製に用いることのできる
高分子液晶の例としては、側鎖に液晶形成基を有するポ
リアクリレート、ポリメタクリレート、ポリシロキサ
ン、ポリマロネートなどの側鎖型ポリマー、主鎖に液晶
形成基をもつポリエステル、ポリエステルアミド、ポリ
カーボネート、ポリアミド、ポリイミドなどの主鎖型ポ
リマーをあげることができる。必要に応じて、コレステ
リック液晶を電離放射線硬化性樹脂中に配合した、コレ
ステリック液晶含有の電離放射線硬化性樹脂組成物を適
宜な基材に塗付し、塗膜に電離放射線を照射することに
よりフィルム化してもよい。塗布したときの基材を剥が
せるように構成することもできる。Examples of the polymer liquid crystal which can be used for the production of these films include side chain type polymers such as polyacrylate, polymethacrylate, polysiloxane and polymalonate having a liquid crystal forming group in the side chain, and a liquid crystal forming group in the main chain. Main chain type polymers such as polyesters, polyester amides, polycarbonates, polyamides and polyimides having If necessary, a cholesteric liquid crystal is compounded in an ionizing radiation curable resin, the cholesteric liquid crystal-containing ionizing radiation curable resin composition is applied to an appropriate substrate, and the film is irradiated with ionizing radiation. May be turned into. The base material can be peeled off when applied.
【００２１】コレステリック液晶層を構成するコレステ
リック液晶は、液晶分子の配向構造が膜厚方向に螺旋を
描くように規則的なねじれを有しており、螺旋のピッチ
Ｐ（液晶分子が３６０°回転するのに必要な膜厚）と入
射光の波長λがほぼ等しい場合に、（１）入射光のうち
特定の波長帯域内にある光を強く反射する選択反射性、
および（２）円偏光選択性の、２つの光学的性質を示
す。The cholesteric liquid crystal forming the cholesteric liquid crystal layer has a regular twist so that the alignment structure of the liquid crystal molecules draws a spiral in the film thickness direction, and the pitch P of the spiral (the liquid crystal molecules rotate 360 °). (The required film thickness) and the wavelength λ of the incident light are approximately equal, (1) selective reflectivity that strongly reflects light within a specific wavelength band of the incident light,
And (2) circular polarization selectivity, showing two optical properties.
【００２２】（１）の選択反射性は、特定の波長域に限
定されて生じるため、コレステリック液晶のピッチＰを
適切に選択することにより、反射光は色純度の高い有彩
色となる。また、入射光が法線に対し斜めに入射する場
合、ピッチＰが見かけ上減少することから、中心波長λ
ｓは短波長側へ移行し、帯域幅Δλは減少する。この現
象は、中心波長λｓが短波長側へ移行することからブル
ーシフトと呼ばれ、目視でも容易に識別可能である。た
とえば、法線方向（０°の入射位置）から観察して赤色
に呈色するコレステリック液晶の反射色は、視野角を大
きくして行くにつれ、オレンジ色、黄色、緑色、青緑
色、青色と順次変化するように観察される。Since the selective reflection property of (1) occurs only in a specific wavelength range, by appropriately selecting the pitch P of the cholesteric liquid crystal, the reflected light becomes a chromatic color having high color purity. In addition, when the incident light is obliquely incident with respect to the normal line, the pitch P apparently decreases, so that the central wavelength λ
s shifts to the short wavelength side, and the bandwidth Δλ decreases. This phenomenon is called a blue shift because the center wavelength λs shifts to the short wavelength side, and can be easily identified visually. For example, the reflected color of the cholesteric liquid crystal that turns red when observed from the normal direction (0 ° incident position) is orange, yellow, green, turquoise, and blue in order as the viewing angle increases. Observed to change.
【００２３】（２）の円偏光選択性は、特定の回転方向
の円偏光だけを反射し、これと回転方向が反対の円偏光
を透過する性質をいう。入射光のうちコレステリック液
晶の配向構造のねじれ方向と同方向の円偏光成分は反射
され、その反射光の回転方向も同一方向となるのに対
し、逆方向に回転する円偏光成分は透過する点がコレス
テリック液晶に特有な特異な性質である。例えば、右ね
じれ構造を有するコレステリック液晶の場合、右円偏光
を反射し、かつ反射光は右円偏光のままであり、左円偏
光は透過することになる。従って、コレステリック液晶
層５は、入射した光のうち、左円偏光又は右円偏光のい
ずれか一方の光のみを反射させて反射光を生成する層で
ある。The circularly polarized light selectivity (2) is a property of reflecting only circularly polarized light having a specific rotation direction and transmitting circularly polarized light having the opposite rotation direction. Of the incident light, the circularly polarized light component in the same direction as the twisting direction of the alignment structure of the cholesteric liquid crystal is reflected, and the rotation direction of the reflected light also becomes the same direction, while the circularly polarized light component rotating in the opposite direction is transmitted. Is a peculiar property peculiar to cholesteric liquid crystal. For example, in the case of a cholesteric liquid crystal having a right twist structure, right circularly polarized light is reflected, and the reflected light remains right circularly polarized light, while left circularly polarized light is transmitted. Therefore, the cholesteric liquid crystal layer 5 is a layer that reflects only one of left-handed circularly polarized light and right-handed circularly polarized light of incident light to generate reflected light.
【００２４】本発明におけるコレステリック液晶層５
は、上記の２つの光学的性質を有することに加えて、真
正性識別対象物２側の面に、ホログラム等の光回折構造
の微細凹凸５ａを有している。この微細凹凸５ａの形状
自体は、ホログラム等の光回折構造における各回折格子
を位相変調して得られるものである。Cholesteric liquid crystal layer 5 in the present invention
In addition to having the above-mentioned two optical properties, has a fine concavo-convex 5a of an optical diffraction structure such as a hologram on the surface on the authenticity identification target 2 side. The shape itself of the fine unevenness 5a is obtained by phase-modulating each diffraction grating in the light diffraction structure such as a hologram.
【００２５】図２は、本発明の微細凹凸５ａを有するコ
レステリック液晶層５の光学的性質を説明するための断
面図である。真正性識別体１のコレステリック液晶層５
に、その法線に対し斜めの方向（図では、法線に対して
約４０°の方向）から入射した入射光Ｉは、コレステリ
ック液晶層５の保護層６側の表面で正反射して、反射光
Ｉｒを生じ、また、反射光Ｉｒと同一の円偏光の光が、
微細凹凸５ａにより、反射光Ｉｒとは異なる方向の回折
光Ｉｄを生じ、微細凹凸５ａがホログラムにおける各回
折格子を位相変調して得られたものであるときは、ホロ
グラム像を生じる。FIG. 2 is a sectional view for explaining the optical properties of the cholesteric liquid crystal layer 5 having the fine irregularities 5a of the present invention. Cholesteric liquid crystal layer 5 of authenticator 1
In addition, incident light I that is incident from a direction oblique to the normal line (in the figure, about 40 ° to the normal line) is specularly reflected by the surface of the cholesteric liquid crystal layer 5 on the protective layer 6 side, The reflected light Ir is generated, and the circularly polarized light same as the reflected light Ir is
The minute unevenness 5a produces diffracted light Id in a direction different from the reflected light Ir, and when the minute unevenness 5a is obtained by phase-modulating each diffraction grating in the hologram, a hologram image is produced.
【００２６】すなわち本発明の微細凹凸５ａを有するコ
レステリック液晶層５は、その保護層６側の表面および
コレステリック液晶層５の内部において、左円偏光又は
右円偏光のいずれか一方の光のみを反射させ、反射光を
生成する。反射光と同一の円偏光の光は、更に微細凹凸
５ａまで達し、微細凹凸５ａにおいて反射光と異なる方
向の回折光Ｉｄを生じ、ホログラム像が形成される。That is, the cholesteric liquid crystal layer 5 having the fine concavities and convexities 5a of the present invention reflects only one of the left circularly polarized light and the right circularly polarized light on the surface of the protective layer 6 side and inside the cholesteric liquid crystal layer 5. And generate reflected light. The circularly polarized light, which is the same as the reflected light, further reaches the fine unevenness 5a, and the diffracted light Id in a direction different from that of the reflected light is generated in the fine unevenness 5a to form a hologram image.
【００２７】従って、入射光Ｉがコレステリック液晶層
５の保護層６側の表面で正反射して生じる反射光Ｉｒを
検出器を用いて検出する際に、円偏光板を介するか、も
しくは直線偏光板と位相差フィルムを介することによ
り、例えば、コレステリック液晶層５を構成するコレス
テリック液晶が右ねじれ構造を有する場合、右円偏光板
を使用すれば、光が透過して検出器により光が検出さ
れ、左円偏光板を使用すれば、光が吸収されて検出器に
より光が検出されないため、反射光Ｉｒが右円偏光であ
ることが分かる。Therefore, when detecting the reflected light Ir generated by the specular reflection of the incident light I on the surface of the cholesteric liquid crystal layer 5 on the side of the protective layer 6 using a detector, the reflected light Ir is transmitted through a circularly polarizing plate or linearly polarized light. By interposing the plate and the retardation film, for example, when the cholesteric liquid crystal that constitutes the cholesteric liquid crystal layer 5 has a right-handed twist structure, if the right circularly polarizing plate is used, the light is transmitted and the light is detected by the detector. When the left circularly polarizing plate is used, it is understood that the reflected light Ir is right circularly polarized light because the light is absorbed and the light is not detected by the detector.
【００２８】また、コレステリック液晶層５は選択反射
性を有するので、光源側もしくは検出器側に特定波長域
を透過するバンドパスフィルターを介することにより、
コレステリック液晶層５特有の反射特性を有するかどう
かの判定も行なえる。Further, since the cholesteric liquid crystal layer 5 has selective reflectivity, it is possible to use a bandpass filter that transmits a specific wavelength range on the light source side or the detector side,
It is also possible to determine whether or not the cholesteric liquid crystal layer 5 has a reflection characteristic.
【００２９】さらに、微細凹凸５ａにおいて反射光と異
なる方向に回折した回折光Ｉｄによるホログラム像を検
出器を用いて検出することができる。Further, the hologram image by the diffracted light Id diffracted in the direction different from the reflected light on the fine unevenness 5a can be detected by using the detector.
【００３０】耐熱性向上層４は、上記のコレステリック
液晶層５の微細凹凸５ａを埋めて、コレステリック液晶
層５にもたらされる熱や圧力によって、微細凹凸５ａが
消失しやすい点を解消する目的で積層するものであり、
この層の積層により、熱や圧力がコレステリック液晶層
５に加わっても、微細凹凸５ａが消失せず、コレステリ
ック液晶層５の耐熱性が向上したものとみなせるもので
ある。この目的を果たすため、耐熱性向上層は、コレス
テリック液晶層５よりも耐熱性の高い材料で構成するこ
とが好ましい。この場合の耐熱性向上層４としては、例
えば軟化点がコレステリック液晶層の軟化点よりも高い
樹脂を用いて構成したものであることが好ましいが、よ
り現実的には、コレステリック液晶層５が２００℃に達
しても、コレステリック液晶層５の微細凹凸５ａが消失
しない樹脂であることが好ましい。The heat resistance improving layer 4 is laminated for the purpose of filling the fine unevenness 5a of the cholesteric liquid crystal layer 5 and eliminating the point that the fine unevenness 5a is easily lost by heat or pressure applied to the cholesteric liquid crystal layer 5. Is what
By stacking these layers, even if heat or pressure is applied to the cholesteric liquid crystal layer 5, the fine irregularities 5a do not disappear, and it can be considered that the heat resistance of the cholesteric liquid crystal layer 5 is improved. For this purpose, the heat resistance improving layer is preferably made of a material having higher heat resistance than the cholesteric liquid crystal layer 5. In this case, the heat resistance improving layer 4 is preferably made of, for example, a resin having a softening point higher than that of the cholesteric liquid crystal layer, but more practically, the cholesteric liquid crystal layer 5 is 200 It is preferable that the resin does not lose the fine irregularities 5a of the cholesteric liquid crystal layer 5 even when the temperature reaches ℃.
【００３１】具体的に耐熱性向上層４を構成する樹脂と
しては熱硬化性樹脂の硬化物を挙げることができ、ま
た、電離放射線硬化性樹脂の硬化物を挙げることもでき
る。電離放射線硬化性樹脂とは、紫外線硬化性樹脂もし
くは電子線硬化性樹脂である。Specific examples of the resin constituting the heat resistance improving layer 4 include a cured product of a thermosetting resin, and a cured product of an ionizing radiation curable resin. The ionizing radiation curable resin is an ultraviolet curable resin or an electron beam curable resin.
【００３２】耐熱性向上層４を構成するための熱硬化性
樹脂としては、ユリア樹脂、メラミン樹脂、フェノール
樹脂、レゾルシノール樹脂、フラン樹脂、エポキシ樹
脂、不飽和ポリエステル樹脂、ポリウレタン樹脂、ポリ
イミド、ポリアミドイミド、ポリベンツイミダゾール、
もしくはポリベンゾチアゾール等を挙げることができ
る。The thermosetting resin for forming the heat resistance improving layer 4 includes urea resin, melamine resin, phenol resin, resorcinol resin, furan resin, epoxy resin, unsaturated polyester resin, polyurethane resin, polyimide, polyamideimide. , Polybenzimidazole,
Alternatively, polybenzothiazole and the like can be mentioned.
【００３３】耐熱性向上層４を構成するための電離放射
線硬化性樹脂としては、分子中に重合性不飽和結合また
は、エポキシ基を有するプレポリマー、オリゴマー、及
び／又はモノマーを適宜に混合した電離放射線硬化性樹
脂組成物を使用することが好ましい。電離放射線とは、
電磁波又は荷電粒子線のうち分子を重合又は架橋し得る
エネルギー量子を有するものを指し、通常は、紫外線又
は電子線を指す。The ionizing radiation-curable resin for constituting the heat resistance improving layer 4 is an ionization resin in which a prepolymer, an oligomer and / or a monomer having a polymerizable unsaturated bond or an epoxy group in the molecule is appropriately mixed. It is preferable to use a radiation curable resin composition. What is ionizing radiation?
Of electromagnetic waves or charged particle beams, those having an energy quantum capable of polymerizing or cross-linking a molecule are used, and usually ultraviolet rays or electron beams are used.
【００３４】電離放射線硬化性樹脂組成物中のプレポリ
マー、オリゴマーの例としては、不飽和ジカルボン酸と
多価アルコールの縮合物等の不飽和ポリエステル類、ポ
リエステルメタクリレート、ポリエーテルメタクリレー
ト、ポリオールメタクリレート、メラミンメタクリレー
ト等のメタクリレート類、ポリエステルアクリレート、
エポキシアクリレート、ウレタンアクリレート、ポリエ
ーテルアクリレート、ポリオールアクリレート、メラミ
ンアクリレート等のアクリレート、カチオン重合型エポ
キシ化合物が挙げられる。Examples of prepolymers and oligomers in the ionizing radiation-curable resin composition include unsaturated polyesters such as condensation products of unsaturated dicarboxylic acids and polyhydric alcohols, polyester methacrylates, polyether methacrylates, polyol methacrylates, melamines. Methacrylates such as methacrylate, polyester acrylate,
Examples thereof include acrylates such as epoxy acrylate, urethane acrylate, polyether acrylate, polyol acrylate, and melamine acrylate, and cationic polymerization type epoxy compounds.
【００３５】電離放射線硬化性樹脂組成物中のモノマー
の例としては、スチレン、α−メチルスチレン等のスチ
レン系モノマー、アクリル酸メチル、アクリル酸−２−
エチルヘキシル、アクリル酸メトキシエチル、アクリル
酸ブトキシエチル、アクリル酸ブチル、アクリル酸メト
キシブチル、アクリル酸フェニル等のアクリル酸エステ
ル類、メタクリル酸メチル、メタクリル酸エチル、メタ
クリル酸プロピル、メタクリル酸メトキシエチル、メタ
クリル酸エトキシメチル、メタクリル酸フェニル、メタ
クリル酸ラウリル等のメタクリル酸エステル類、アクリ
ル酸−２−（Ｎ，Ｎ−ジエチルアミノ）エチル、アクリ
ル酸−２−（Ｎ，Ｎ−ジメチルアミノ）エチル、アクリ
ル酸−２−（Ｎ，Ｎ−ジベンジルアミノ）メチル、アク
リル酸−２−（Ｎ，Ｎ−ジエチルアミノ）プロピル等の
不飽和置換の置換アミノアルコールエステル類、アクリ
ルアミド、メタクリルアミド等の不飽和カルボン酸アミ
ド、エチレングリコールジアクリレート、プロピレング
リコールジアクリレート、ネオペンチルグリコールジア
クリレート、１，６−ヘキサンジオールジアクリレー
ト、トリエチレングリコールジアクリレート等の化合
物、ジプロピレングリコールジアクリレート、エチレン
グリコールジアクリレート、プロピレングリコールジメ
タクリレート、ジエチレングリコールジメタクリレート
等の多官能性化合物、及び／又は分子中に２個以上のチ
オール基を有するポリチオール化合物、例えばトリメチ
ロールプロパントリチオグリコレート、トリメチロール
プロパントリチオプロピレート、ペンタエリスリトール
テトラチオグリコレート等が挙げられる。Examples of the monomer in the ionizing radiation curable resin composition include styrene, styrene-based monomers such as α-methylstyrene, methyl acrylate and acrylic acid-2-.
Acrylic esters such as ethylhexyl, methoxyethyl acrylate, butoxyethyl acrylate, butyl acrylate, methoxybutyl acrylate, phenyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, methoxyethyl methacrylate, methacrylic acid Methacrylic acid esters such as ethoxymethyl, phenyl methacrylate, lauryl methacrylate, 2- (N, N-diethylamino) ethyl acrylate, 2- (N, N-dimethylamino) ethyl acrylate, acrylic acid-2 -(N, N-dibenzylamino) methyl, unsaturated substituted amino alcohol esters such as 2- (N, N-diethylamino) propyl acrylate, unsaturated carboxylic acid amides such as acrylamide and methacrylamide, ethylene Green Diacrylate, propylene glycol diacrylate, neopentyl glycol diacrylate, 1,6-hexanediol diacrylate, triethylene glycol diacrylate, and other compounds, dipropylene glycol diacrylate, ethylene glycol diacrylate, propylene glycol dimethacrylate, diethylene glycol Polyfunctional compounds such as dimethacrylate and / or polythiol compounds having two or more thiol groups in the molecule, such as trimethylolpropane trithioglycolate, trimethylolpropane trithiopropylate, pentaerythritol tetrathioglycolate, etc. Is mentioned.
【００３６】通常、電離放射線硬化性樹脂組成物中のモ
ノマーとしては、以上の化合物を必要に応じて、１種若
しくは２種以上を混合して用いるが、電離放射線硬化性
樹脂組成物に通常の塗布適性を与えるために、前記のプ
レポリマー又はオリゴマーを５重量％以上、前記モノマ
ー及び／又はポリチオール化合物を９５重量％以下とす
るのが好ましい。Usually, as the monomer in the ionizing radiation-curable resin composition, one kind or a mixture of two or more kinds of the above compounds is used, if necessary. In order to impart coating suitability, it is preferable that the prepolymer or oligomer is 5% by weight or more and the monomer and / or polythiol compound is 95% by weight or less.
【００３７】電離放射線硬化性樹脂組成物を硬化させた
ときのフレキシビリティーが要求されるときは、モノマ
ー量を減らすか、官能基の数が１又は２のアクリレート
モノマーを使用するとよい。電離放射線硬化性樹脂組成
物を硬化させたときの耐摩耗性、耐熱性、耐溶剤性が要
求されるときは、官能基の数が３つ以上のアクリレート
モノマーを使う等、電離放射線硬化性樹脂組成物の設計
が可能である。When flexibility in curing the ionizing radiation-curable resin composition is required, the amount of the monomer may be reduced or an acrylate monomer having 1 or 2 functional groups may be used. When abrasion resistance, heat resistance and solvent resistance are required when the ionizing radiation curable resin composition is cured, an ionizing radiation curable resin such as using an acrylate monomer having three or more functional groups is used. It is possible to design the composition.
【００３８】ここで、官能基が１のものとして、２−ヒ
ドロキシアクリレート、２−ヘキシルアクリレート、フ
ェノキシエチルアクリレートが挙げられる。官能基が２
のものとして、エチレングリコールジアクリレート、
１，６−ヘキサンジオールジアクリレートが挙げられ
る。官能基が３以上のものとして、トリメチロールプロ
パントリアクリレート、ペンタエリスリトールトリアク
リレート、ペンタエリスリトールテトラアクリレート、
ジペンタエリスリトールヘキサアクレリート等が挙げら
れる。Examples of the functional group having 1 are 2-hydroxy acrylate, 2-hexyl acrylate and phenoxyethyl acrylate. 2 functional groups
Ethylene glycol diacrylate,
1,6-hexanediol diacrylate may be mentioned. As a functional group having 3 or more, trimethylolpropane triacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate,
Examples include dipentaerythritol hexaacrylate.
【００３９】電離放射線硬化性樹脂組成物の硬化が紫外
線照射により行われるときは、光重合開始剤や光重合促
進剤を添加する。光重合開始剤としては、ラジカル重合
性不飽和基を有する樹脂系の場合は、アセトフェノン
類、ベンゾフェノン類、チオキサントン類、ベンゾイ
ン、ベンゾインメチルエーテル等を単独又は混合して用
いる。また、カチオン重合性官能基を有する樹脂系の場
合は、光重合開始剤として、芳香族ジアゾニウム塩、芳
香族スルホニウム塩、芳香族ヨードニウム塩、メタセロ
ン化合物、ベンゾインスルホン酸エステル等を単独又は
混合物として用いる。光重合開始剤の添加量は、電離放
射線硬化性樹脂組成物１００重量部に対し、０．１〜１
０重量部である。電離放射線硬化性樹脂組成物の硬化が
電子線照射により行われるときは、光重合開始剤や光重
合促進剤を添加しなくてよい。When the ionizing radiation curable resin composition is cured by irradiation with ultraviolet rays, a photopolymerization initiator or a photopolymerization accelerator is added. As the photopolymerization initiator, in the case of a resin system having a radically polymerizable unsaturated group, acetophenones, benzophenones, thioxanthones, benzoin, benzoin methyl ether and the like are used alone or in combination. In the case of a resin system having a cationically polymerizable functional group, an aromatic diazonium salt, an aromatic sulfonium salt, an aromatic iodonium salt, a metacelone compound, a benzoin sulfonic acid ester or the like is used alone or as a mixture as a photopolymerization initiator. . The addition amount of the photopolymerization initiator is 0.1 to 1 with respect to 100 parts by weight of the ionizing radiation curable resin composition.
0 parts by weight. When the ionizing radiation curable resin composition is cured by electron beam irradiation, it is not necessary to add a photopolymerization initiator or a photopolymerization accelerator.
【００４０】耐熱性向上層４は、その色相を問わない
が、黒色等の暗色の染料もしくは顔料の配合により、黒
色等の暗色とすると、コレステリック液晶層５の微細凹
凸５ａにより生じるホログラム等の光回折構造の視認性
が増して好ましい。なお、耐熱性向上層４の厚みとして
は、０．１μｍ〜５μｍが好ましく、より好ましくは
０．５μｍ〜２μｍ程度である。The heat resistance improving layer 4 may have any hue, but when a dark color such as black is obtained by blending a dark color dye or pigment such as black, light such as hologram generated by the fine irregularities 5a of the cholesteric liquid crystal layer 5 is generated. This is preferable because the visibility of the diffractive structure is increased. The thickness of the heat resistance improving layer 4 is preferably 0.1 μm to 5 μm, more preferably about 0.5 μm to 2 μm.
【００４１】保護層６は、微細凹凸５ａを有するコレス
テリック液晶層５の微細凹凸５ａがある側とは反対側の
表面に積層され、コレステリック液晶層５の表面に傷が
着いたり、摩耗することを防止する、物理的耐久性の向
上の目的、または、汚れや、水分、もしくは種々の化学
物質から保護する、化学的耐久性の向上の目的で設けら
れる。保護層６はまた、耐熱性保護層５が果たすほどの
効果ではないが、コレステリック液晶層５の微細凹凸が
熱や圧力により消失することを抑制し得る効果も有する
ものである。勿論、コレステリック液晶層５およびそれ
が有する微細凹凸５ａの機能を発揮する意味だけから
は、積層しなくてもよいが、真正性識別体１を長期に渡
って使用する際には、積層されていることが好ましい。The protective layer 6 is laminated on the surface of the cholesteric liquid crystal layer 5 having the fine irregularities 5a on the side opposite to the side where the fine irregularities 5a are present, so that the surface of the cholesteric liquid crystal layer 5 is prevented from being scratched or worn. It is provided for the purpose of prevention, improvement of physical durability, or protection of stains, moisture, or various chemical substances for improvement of chemical durability. The protective layer 6 also has an effect of suppressing disappearance of fine irregularities of the cholesteric liquid crystal layer 5 due to heat or pressure, though not as effective as the heat resistant protective layer 5. Of course, it is not necessary to stack the cholesteric liquid crystal layer 5 and the fine irregularities 5a of the cholesteric liquid crystal layer 5, but when the authenticity identifying body 1 is used for a long period of time, it may be stacked. Is preferred.
【００４２】保護層６を構成する材質としては、既に説
明した耐熱性向上層４を構成するためのものと同様、熱
硬化性樹脂の硬化物、または、電離放射線硬化性樹脂の
硬化物を挙げることができ、さらには、一般的な熱可塑
性樹脂を用いることもでき、層の形成法も耐熱性向上層
４の場合と同様である。保護層６の厚みとしては、０．
１μｍ〜１０μｍ、好ましくは０．５μｍ〜５μｍ程度
とするとよい。As the material for the protective layer 6, similar to the material for forming the heat resistance improving layer 4 described above, a cured product of a thermosetting resin or a cured product of an ionizing radiation curable resin can be used. In addition, a general thermoplastic resin can be used, and the method for forming the layer is the same as in the case of the heat resistance improving layer 4. The thickness of the protective layer 6 is 0.
The thickness may be about 1 μm to 10 μm, preferably about 0.5 μm to 5 μm.
【００４３】保護層６を構成し得る熱可塑性樹脂として
は、ロジン変成マレイン酸樹脂、ニトロセルロース、酢
酸セルロース、酪酢酸セルロース、エチルセルロース、
飽和ポリエステル樹脂、ポリアミド樹脂、塩化ゴム、環
化ゴム、ポリアミド樹脂、ポリ塩化ビニル樹脂、塩化ビ
ニル／酢酸ビニル共重合樹脂、エチレン／酢酸ビニル共
重合樹脂、塩素化ポリプロピレン、もしくはアクリル樹
脂を挙げることができる。As the thermoplastic resin which can constitute the protective layer 6, rosin-modified maleic acid resin, nitrocellulose, cellulose acetate, cellulose butyrate acetate, ethyl cellulose,
Examples include saturated polyester resin, polyamide resin, chlorinated rubber, cyclized rubber, polyamide resin, polyvinyl chloride resin, vinyl chloride / vinyl acetate copolymer resin, ethylene / vinyl acetate copolymer resin, chlorinated polypropylene, or acrylic resin. it can.
【００４４】本発明の真正性識別体１は、真正性識別対
象物２を基材とし、その上に、接着剤層３、耐熱性向上
層４、コレステリック液晶層５、および保護層６を順に
積層することにより形成することができるが、コレステ
リック液晶層５の真正性識別対象物２側（耐熱性向上層
４側でもある。）に微細凹凸５ａを形成する必要上、逆
の順序で積層する方が好ましい。The authenticity discriminating body 1 of the present invention comprises an authenticity discriminating object 2 as a base material, and an adhesive layer 3, a heat resistance improving layer 4, a cholesteric liquid crystal layer 5, and a protective layer 6 in this order. Although it can be formed by laminating, the layers are laminated in the reverse order because it is necessary to form the fine irregularities 5a on the authenticity identification target 2 side (also the heat resistance improving layer 4 side) of the cholesteric liquid crystal layer 5. Is preferred.
【００４５】コレステリック液晶層５自体は、巻取り可
能な連続したフィルムとして得ることもできるので、コ
レステリック液晶層５の片面には保護層６を積層し、反
対側の面には微細凹凸５ａを形成し、形成された微細凹
凸５ａを覆うようにして耐熱性向上層４、および接着剤
層３を積層した積層体を形成しておき、得られた積層体
を、真正性識別対象物２と、接着剤層３側が真正性識別
対象物２側になるよう向かい合わせて、両者間に熱と圧
力をかけて接着させ、積層することができる。Since the cholesteric liquid crystal layer 5 itself can be obtained as a continuous film that can be wound up, the protective layer 6 is laminated on one surface of the cholesteric liquid crystal layer 5 and the fine irregularities 5a are formed on the opposite surface. Then, a laminated body in which the heat resistance improving layer 4 and the adhesive layer 3 are laminated is formed so as to cover the formed fine irregularities 5a, and the obtained laminated body is combined with the authenticity identification target 2 and The adhesive layer 3 side can be made to face each other so as to be the authenticity identification target 2 side, and heat and pressure can be applied between them to bond them, and they can be laminated.
【００４６】あるいは、保護層６、耐熱性向上層４側に
微細凹凸５ａを有するコレステリック液晶層５、耐熱性
向上層４、および接着剤層３を積層した積層体を転写層
（真正性識別構造でもある。）とする転写シートとして
構成し、このような転写シートを用いて、真正性識別対
象物２上に、転写層をその接着剤層３を利用して積層す
ることもできる。Alternatively, a laminate obtained by laminating the protective layer 6, the cholesteric liquid crystal layer 5 having fine irregularities 5a on the heat resistance improving layer 4 side, the heat resistance improving layer 4, and the adhesive layer 3 is used as a transfer layer (authenticity identifying structure). However, it is also possible to stack a transfer layer on the authenticity identifying object 2 by using the adhesive layer 3 using the transfer sheet.
【００４７】図３は、そのような真正性識別構造を転写
可能とした真正性識別構造転写シートを示すための断面
図である。本発明の真正性識別構造転写シート１１は、
離型性シート上基材１２の一方の面の離型性面１２ａ
（図３では下面側）に、保護層６、コレステリック液晶
層５、耐熱性向上層４、および接着剤層３からなる転写
層１３が順に積層されており、コレステリック液晶層５
の離型性シート状基材１２側とは反対側の面に微細凹凸
５ａを有する構造からなるものである。FIG. 3 is a sectional view showing an authenticity identifying structure transfer sheet capable of transferring such an authenticity identifying structure. The authenticity identification structure transfer sheet 11 of the present invention is
Releasable Surface 12a on One Side of Base Material 12 on Releasable Sheet
A protective layer 6, a cholesteric liquid crystal layer 5, a heat resistance improving layer 4, and a transfer layer 13 including an adhesive layer 3 are sequentially laminated on the lower surface side in FIG.
Of the releasable sheet-shaped substrate 12 has a structure having fine irregularities 5a on the surface opposite to the side.
【００４８】転写シートの基材シートである離型性シー
ト状基材１２としては、ポリカーボネート、ポリビニル
アルコール、ポリスルホン、ポリエチレン、ポリプロピ
レン、ポリスチレン、ポリアリレート、ポリエチレンテ
レフタレート、トリアセチルセルロース、ジアセチルセ
ルロース、もしくはポリエチレン−ビニルアルコール共
重合体等の樹脂のフィルムであって、一般的な転写シー
トのベースとして使用するものを使用することができ、
厚みとしては、２〜１００μｍ程度が使いやすいが、こ
の範囲外のものでもよい。As the releasable sheet-like substrate 12 which is the substrate sheet of the transfer sheet, polycarbonate, polyvinyl alcohol, polysulfone, polyethylene, polypropylene, polystyrene, polyarylate, polyethylene terephthalate, triacetyl cellulose, diacetyl cellulose, or polyethylene is used. -A resin film such as a vinyl alcohol copolymer, which can be used as a base of a general transfer sheet,
A thickness of about 2 to 100 μm is easy to use, but a thickness outside this range may be used.
【００４９】これらプラスチックフィルムは、転写層１
３、通常は、保護層６を構成する素材との関係で、必要
に応じ、離型性層を設けることにより離型性面を構成し
て使用する。また、保護層６を構成する素材との関係
で、保護層６を形成する側の面が適度に離型性を有し、
即ち、適度な接着力を有するけれども、転写層１３の剥
離が円滑に行なえる離型性面である場合には、離型性層
を設けずに使用する。These plastic films are the transfer layer 1
3. Usually, in consideration of the material constituting the protective layer 6, a releasable layer is provided as necessary to form a releasable surface for use. In addition, in relation to the material forming the protective layer 6, the surface on which the protective layer 6 is formed has an appropriate releasability,
That is, if the transfer layer 13 has a release property that has an appropriate adhesive force and can be peeled off smoothly, the release layer is used without being provided.
【００５０】上記の樹脂のフィルムの片面に離型性を付
与する目的で設ける離型性層は、樹脂のフィルムとよく
密着し、適宜な離型性面を与える樹脂で構成するか、も
しくは、そのような樹脂に、さらにシリコーン樹脂、シ
リコーンオイル、ワックス等を剥離性を向上させる目的
で添加して構成したものであり、通常、１〜５μｍ程度
の厚みに形成する。The releasable layer provided for the purpose of imparting releasability to one surface of the resin film described above is made of a resin which adheres well to the resin film and gives an appropriate releasable surface, or A silicone resin, silicone oil, wax or the like is further added to such a resin for the purpose of improving releasability, and is usually formed to have a thickness of about 1 to 5 μm.
【００５１】上記の離型性シート状基材１２の離型性面
１２ａ上には、保護層６を積層する。用いる素材は既に
述べた通りであり、塗布に適した適宜な粘度になるよう
調製した後、公知のコーティング方法により塗布し、塗
布後の塗膜に、必要に応じ、電離放射線を照射すること
により、離型性シート状基材１２の離型性面１２ａ上
に、保護層６を積層することができる。The protective layer 6 is laminated on the releasable surface 12a of the releasable sheet-shaped substrate 12. The materials used are as described above, and after being prepared to have an appropriate viscosity suitable for coating, they are coated by a known coating method, and the coating film after coating is irradiated with ionizing radiation, if necessary. The protective layer 6 can be laminated on the releasable surface 12 a of the releasable sheet-shaped substrate 12.
【００５２】保護層６の離型性シート状基材１２とは反
対側の面上には、コレステリック液晶層５を積層する。
コレステリック液晶層５を積層するには、既に説明した
素材を用い、塗付および乾燥することにより積層しても
よく、もしくは、別に製造したコレステリック液晶フィ
ルムを接着剤を用いる等により、ラミネートすることに
より積層してもよい。または、コレステリック液晶層の
積層を、コレステリック液晶を電離放射線硬化性樹脂中
に配合した、コレステリック液晶含有の電離放射線硬化
性樹脂組成物を用いた塗布によって行なってもよい。A cholesteric liquid crystal layer 5 is laminated on the surface of the protective layer 6 opposite to the releasable sheet-shaped substrate 12.
In order to laminate the cholesteric liquid crystal layer 5, the materials described above may be used and laminated by applying and drying, or by laminating a separately manufactured cholesteric liquid crystal film with an adhesive or the like. You may laminate. Alternatively, the cholesteric liquid crystal layer may be laminated by coating using a cholesteric liquid crystal-containing ionizing radiation curable resin composition in which a cholesteric liquid crystal is mixed with an ionizing radiation curable resin.
【００５３】コレステリック液晶層５の離型性シート状
基材側とは反対の側の面には、ホログラム等の光回折構
造の微細凹凸５ａを形成する。微細凹凸５ａを形成する
には、コレステリック液晶層５が熱可塑性であるとき
は、所望の微細凹凸５ａとは逆型形状を有する凹凸型を
熱および圧力を伴って、押し付けることにより、コレス
テリック液晶層５に、ホログラム等の光回折構造の微細
凹凸５ａを形成することが好ましい。On the surface of the cholesteric liquid crystal layer 5 opposite to the side of the releasable sheet-like substrate, fine irregularities 5a of a light diffraction structure such as a hologram are formed. In order to form the fine irregularities 5a, when the cholesteric liquid crystal layer 5 is thermoplastic, a concave-convex mold having an inverse shape to the desired fine irregularities 5a is pressed with heat and pressure to form the cholesteric liquid crystal layer. It is preferable to form fine irregularities 5 a of a light diffractive structure such as a hologram on 5.
【００５４】コレステリック液晶層５がコレステリック
液晶を電離放射線硬化性樹脂中に配合した、コレステリ
ック液晶含有の電離放射線硬化性樹脂組成物等の電離放
射線硬化性組成物を用いて形成される場合には、耐熱保
護層５を積層した離型性シート状基材１２と凹凸型と
を、そのような電離放射線硬化性組成物を介して密着さ
せ、そのままの状態で、電離放射線硬化性組成物に対し
て電離放射線を照射し、硬化させることにより、微細凹
凸５ａを形成することができる。When the cholesteric liquid crystal layer 5 is formed by using an ionizing radiation curable composition such as a cholesteric liquid crystal-containing ionizing radiation curable resin composition in which a cholesteric liquid crystal is blended in an ionizing radiation curable resin, The mold-releasing sheet-like substrate 12 having the heat-resistant protective layer 5 laminated thereon and the concave-convex mold are brought into close contact with each other via such an ionizing radiation-curable composition, and in that state, to the ionizing radiation-curable composition. The fine irregularities 5a can be formed by irradiating with ionizing radiation and curing.
【００５５】なお、保護層６が電離放射線硬化樹脂の硬
化物で構成され、コレステリック液晶層５の形成の際
に、コレステリック液晶含有の電離放射線硬化性樹脂組
成物等の電離放射線硬化性組成物を使用するときは、保
護層６が完全に硬化した後に、コレステリック液晶層５
を形成しようとすると、保護層６とコレステリック液晶
層５との間の接着力が十分向上しないことがあり得る。
そこで、保護層６の硬化を、未だ、表面の接着性が失わ
れない程度にハーフキュア状態で止めておき、コレステ
リック液晶を電離放射線硬化性樹脂中に配合した、コレ
ステリック液晶含有の電離放射線硬化性樹脂組成物等の
電離放射線硬化性組成物を、ハーフキュア状態の保護層
６上に塗布し、下層の保護層６の硬化を兼ねて、上層の
コレステリック液晶層５を硬化させると、両層共、硬化
させることができる上、両層間の接着力を十分に確保す
ることができるので、好ましい。The protective layer 6 is composed of a cured product of an ionizing radiation curable resin, and when the cholesteric liquid crystal layer 5 is formed, an ionizing radiation curable composition such as an ionizing radiation curable resin composition containing a cholesteric liquid crystal is used. When used, after the protective layer 6 is completely cured, the cholesteric liquid crystal layer 5
If it is attempted to form, the adhesive force between the protective layer 6 and the cholesteric liquid crystal layer 5 may not be sufficiently improved.
Therefore, the curing of the protective layer 6 is stopped in a half-cure state to the extent that the adhesiveness of the surface is not lost, and the cholesteric liquid crystal is compounded in the ionizing radiation curable resin. When an ionizing radiation curable composition such as a resin composition is applied on the protective layer 6 in a half-cure state and the upper cholesteric liquid crystal layer 5 is cured while also functioning as the curing of the lower protective layer 6, both layers are cured. It is preferable because it can be cured and the adhesive force between both layers can be sufficiently secured.
【００５６】微細凹凸５ａを形成するための凹凸型は、
平面状のものでも、ローラ状のものでもよい。凹凸型の
片面の微細凹凸は、ホログラムや回折格子パターン（こ
れらを総称して光回折構造と言う。）が有する回折格子
を位相変調して得られたものをオリジナル型として作ら
れる。例えば、ホログラムを撮影する際に、フォトレジ
スト層に対して干渉露光を行ない、現像を行なえば、格
子が凹凸に変換されたレリーフ型を得ることができるの
で、これをオリジナル型とすることができる。また、ホ
ログラムや回折格子パターンを計算によって求めるとき
は、位相の情報を型の深さの情報に変換したデータを基
に、フォトマスクを露光、現像することにより、レリー
フ型を得ることができるので、これをオリジナル型とす
ることができる。The concavo-convex mold for forming the fine concavo-convex 5a is
It may be flat or roller-shaped. The concave-convex one-sided fine irregularities are made as an original pattern obtained by phase-modulating a diffraction grating included in a hologram or a diffraction grating pattern (collectively referred to as an optical diffraction structure). For example, when a hologram is photographed, if a photoresist layer is subjected to interference exposure and development is performed, a relief type in which a lattice is converted into unevenness can be obtained, and thus this can be used as an original type. . Further, when a hologram or a diffraction grating pattern is obtained by calculation, a relief type can be obtained by exposing and developing a photomask based on the data obtained by converting the phase information into the depth information of the die. , This can be the original type.
【００５７】得られたオリジナル型は、メッキを繰り返
し行なう等により、複製用型を製造し、あるいは、縦横
等に並べる等して、同じ微細凹凸を一度に広い面積に押
し付けることができるよう、好ましくは殖版して、平板
状、もしくはローラ状の凹凸型として、使用する。The obtained original mold is preferably manufactured by repeating plating or the like to manufacture a mold for duplication, or by arranging it in the vertical and horizontal directions so that the same fine irregularities can be pressed onto a large area at a time. Is used as a flat plate-shaped or roller-shaped concave and convex type.
【００５８】コレステリック液晶層５の微細凹凸５ａが
設けられた側を覆って、耐熱性向上層４を積層する。熱
硬化性樹脂を用いて耐熱性向上層４を形成するには、主
剤と硬化剤等を混合して、塗布に適した熱硬化性樹脂組
成物を調製して、公知の塗布手段によりコレステリック
液晶層５の微細凹凸５ａ上に塗布し、塗布後、必要に応
じ、加温して硬化させる。また、電離放射線硬化樹脂を
用いて耐熱性向上層４を形成するには、プレポリマー、
オリゴマー、及び／又はモノマーを、必要に応じて、光
重合開始剤や光重合促進剤を添加して混合して得た電離
放射線硬化性樹脂組成物を、公知の塗布手段により塗布
し、塗布後の塗膜に電離放射線を照射することにより行
なう。コレステリック液晶層５が電離放射線硬化樹脂の
硬化物で構成される場合には、塗布の際の下層となるコ
レステリック液晶層５をハーフキュアさせておき、耐熱
性向上層４を形成する際の電離放射線照射の際に、下層
となる保護層６および／またはコレステリック液晶層５
を完全硬化させるとよい。保護層６およびコレステリッ
ク液晶層５の両方が電離放射線硬化樹脂の硬化物で構成
される場合には、いずれの層もハーフキュア状態として
おき、耐熱性向上層４を形成する際の電離放射線照射の
際に、下層となる保護層６およびコレステリック液晶層
５の両方を完全硬化させるとよい。The heat resistance improving layer 4 is laminated so as to cover the side of the cholesteric liquid crystal layer 5 on which the fine irregularities 5a are provided. To form the heat resistance improving layer 4 using a thermosetting resin, a base material and a curing agent are mixed to prepare a thermosetting resin composition suitable for coating, and the cholesteric liquid crystal is formed by a known coating means. It is applied on the fine unevenness 5a of the layer 5, and after application, it is heated and cured as necessary. In order to form the heat resistance improving layer 4 using an ionizing radiation curable resin, a prepolymer,
An ionizing radiation curable resin composition obtained by adding and mixing an oligomer and / or a monomer, if necessary, with a photopolymerization initiator or a photopolymerization accelerator is applied by a known application means, and after application. The coating film is irradiated with ionizing radiation. When the cholesteric liquid crystal layer 5 is composed of a cured product of an ionizing radiation curable resin, the cholesteric liquid crystal layer 5 which is a lower layer at the time of application is half-cured to form an ionizing radiation when the heat resistance improving layer 4 is formed. Upon irradiation, the protective layer 6 and / or the cholesteric liquid crystal layer 5 which is the lower layer
Should be completely cured. When both the protective layer 6 and the cholesteric liquid crystal layer 5 are composed of a cured product of an ionizing radiation curable resin, both layers are left in a half-cure state to prevent irradiation of ionizing radiation when the heat resistance improving layer 4 is formed. At this time, both the lower protective layer 6 and the cholesteric liquid crystal layer 5 may be completely cured.
【００５９】続いて、耐熱性向上層４上に接着剤層３を
積層する。接着剤層３を構成する素材としては、既に説
明したもの用い、耐熱性向上層４上に直接に塗付する
か、もしくは剥離紙（通称、「セパ紙」）に塗布したも
のをラミネートすることによってもよい。この剥離紙
は、真正性識別構造を真正性識別対象物に適用する際に
は、事前に剥がす。Subsequently, the adhesive layer 3 is laminated on the heat resistance improving layer 4. As the material for forming the adhesive layer 3, use the one described above, and apply it directly on the heat resistance improving layer 4 or laminate the one applied on the release paper (commonly called "sepa paper"). May be The release paper is peeled off in advance when the authenticity identifying structure is applied to the authenticity identifying object.
【００６０】真正性識別構造転写シート１１は、その接
着剤層３側を真正性識別対象物２側に向けて重ね、重ね
合せたものを、平板状、もしくはローラ状の熱プレスを
用いて熱および圧力をかけることにより、接着剤層３を
賦活して接着させ、その後、離型性シート状基材１２を
剥がすことにより、上から保護層６、保護層６側とは反
対側の面に光回折構造の微細凹凸５ａを有するコレステ
リック液晶層５、耐熱性向上層４、および接着剤層３と
からなる真正性識別構造を、真正性識別対象物２上に転
写することができる。The authenticity identification structure transfer sheet 11 is heated by using a flat plate-shaped or roller-shaped heat press by stacking the adhesive layer 3 side toward the authenticity identification object 2 side and stacking them. By applying pressure and pressure, the adhesive layer 3 is activated and adhered, and then the releasable sheet-shaped substrate 12 is peeled off, whereby the protective layer 6 and the surface on the side opposite to the protective layer 6 side are removed from above. The authenticity identifying structure including the cholesteric liquid crystal layer 5 having the fine unevenness 5a of the light diffraction structure, the heat resistance improving layer 4, and the adhesive layer 3 can be transferred onto the authenticity identifying object 2.
【００６１】本発明は、基本的に以上の構成を有する
が、説明した各層の間には、通常、この分野で付加され
得る層が追加されたり、処理が追加されてもよい。例え
ば、接着性を向上させるためのコロナ放電処理、アンカ
ー層もしくはプライマー層の積層等である。また、この
明細書では、離型層はプラスチックフィルムに密着して
おり、離型層と耐熱性保護層の間で剥離することを念頭
に説明したが、離型層と耐熱性保護層との間に、離型性
を調節するための層を追加して、その層と離型層との間
で剥離するよう構成することもできる。また、真正性識
別体や接着性識別構造転写シートには、外から見える限
り、適宜なデザインの図柄、文字を介在させたり、着色
を施してもよい。特に、接着剤層３とコレステリック液
晶層５の間に着色層、特に暗色もしくは濃色の着色層を
介在させてもよい。Although the present invention basically has the above-mentioned constitution, a layer which can be added in this field or a treatment may be usually added between the described layers. For example, corona discharge treatment for improving adhesiveness, lamination of anchor layer or primer layer, and the like. Further, in this specification, the release layer is in close contact with the plastic film, and it was explained in consideration of peeling between the release layer and the heat-resistant protective layer. It is also possible to add a layer for controlling the releasability between the layers and to separate the layer from the release layer. Further, the authentic identification body or the adhesive identification structure transfer sheet may be provided with a pattern or character of an appropriate design or may be colored as long as it can be seen from the outside. In particular, a colored layer, particularly a dark or dark colored layer, may be interposed between the adhesive layer 3 and the cholesteric liquid crystal layer 5.
【００６２】真正性識別対象物２は、従来技術に挙げた
もののすべてが含まれるが、真正性識別対象物２が工業
的に利用される可能性の高い情報記録媒体である場合、
先に述べたように、印刷、エンボスがなされていてもよ
いことは勿論だが、用途に応じて、種々の要素、主に、
情報記録手段が付加されていてもよい。そのような情報
記録手段としては、磁気記録層、光学記録層（ホログラ
ムをも含む。）、感熱記録層、感熱発消色層、昇華方式
の記録用の受像層、署名のための筆記性層、またはＩＣ
モジュール、もしくはＬＳＩモジュール、等である。こ
れらは、単独、もしくは二以上、適宜に選択して付加さ
れ得る。The authenticity identifying object 2 includes all of those mentioned in the prior art, but when the authenticity identifying object 2 is an information recording medium that is highly likely to be industrially used,
As mentioned above, it goes without saying that it may be printed or embossed, but depending on the application, various elements, mainly,
Information recording means may be added. Examples of such information recording means include a magnetic recording layer, an optical recording layer (including a hologram), a thermosensitive recording layer, a thermosensitive coloring / erasing layer, an image receiving layer for sublimation recording, and a writing layer for signature. , Or IC
A module, an LSI module, or the like. These may be added alone or in two or more by appropriately selecting them.
【００６３】[0063]
【実施例】（実施例１）剥離層を有するフィルム上に、
剥離性保護層およびコレステリック液晶層が積層された
積層フィルム（日石三菱（株）製、「ＣＨＳフィル
ム」）のコレステリック液晶層に、エンボスホログラム
のマスター型を用い、加熱ロールおよび加圧ロールから
なるプレス装置を利用して、ホログラムの凹凸を形成し
た。次に、ホログラムの凹凸が形成された面上の全面
に、二液硬化型ポリウレタン樹脂系バインダの墨インキ
（ザ・インクテック（株）製、「ＸＥＬ検知マーク墨」
／「ＸＥＬ（Ｄ）硬化剤（イソシアネート化合物）」＝
１００／５の混合物）を用い、乾燥時塗付量が１ｇ／ｍ
2になるよう塗布した後、５０°の温度で３６時間エー
ジングを行なって、耐熱性向上層を形成した。さらに、
耐熱性向上層上の全面に、塩化ビニル／酢酸ビニル共重
合体系樹脂を含むインキ（ザ・インクテック（株）製の
「ＨＳ−ＡＳＶ」／昭和インク工業（株）製の「ＨＳ−
３１」＝１０／３の混合物）を用い、乾燥時塗付量が３
ｇ／ｍ2になるよう塗布して、ヒートシール層を形成
し、転写シートとした。このようにして得られた転写シ
ートを、プラスチックカード上に、ヒートシール層側が
接するようにして重ねて通常の条件にて熱転写し、フィ
ルムを剥離したところ、プラスチックカード上に転写さ
れたホログラムが十分に視認でき、ホログラムが熱転写
で損なわれることがなかった。EXAMPLE (Example 1) On a film having a release layer,
The cholesteric liquid crystal layer of a laminated film (“CHS film” manufactured by Mitsubishi Nisseki Co., Ltd.) in which a peelable protective layer and a cholesteric liquid crystal layer are laminated is composed of a heating roll and a pressure roll using a master mold of an embossed hologram. The pressing device was used to form the irregularities of the hologram. Next, a black ink of a two-component curing type polyurethane resin-based binder (“XEL detection mark black ink” manufactured by The Inktech Co., Ltd.) is formed on the entire surface of the hologram on which unevenness is formed.
/ "XEL (D) curing agent (isocyanate compound)" =
100/5 mixture) and the dry coating amount is 1 g / m.
After being applied so as to be 2 , a heat resistance improving layer was formed by aging at a temperature of 50 ° for 36 hours. further,
Ink containing vinyl chloride / vinyl acetate copolymer resin on the entire surface of the heat resistance improving layer (“HS-ASV” manufactured by The Inktech Co., Ltd./ “HS-made by Showa Ink Industry Co., Ltd.”
31 ”= 10/3 mixture) and the dry coating amount is 3
It was applied so as to be g / m 2 to form a heat seal layer, which was used as a transfer sheet. The transfer sheet thus obtained was overlaid on a plastic card so that the heat-sealing layer side was in contact and heat-transferred under normal conditions, and the film was peeled off. It was visible and the hologram was not damaged by thermal transfer.
【００６４】[0064]
【発明の効果】請求項１の発明によれば、真正性識別対
象物上に積層された、ホログラム等の微細凹凸を有する
コレステリック液晶層の微細凹凸のある側に耐熱性向上
層が積層されているので、不用意に熱や圧力が加わって
も、ホログラム等の微細凹凸が消失しにくく、ホログラ
ム等の微細凹凸を有するコレステリック液晶層の真正性
識別機能が保持され、従って、真正性識別機能の熱や圧
力に対する耐久性が向上した真正性識別体を提供するこ
とができる。請求項２の発明によれば、請求項１の発明
の効果に加え、コレステリック液晶層の微細凹凸の無い
側に保護層が積層されているので、真正性識別構造の表
面の物理的および化学的耐久性が高い真正性識別体を提
供することができる。請求項３の発明によれば、請求項
１または請求項２の発明の効果に加え、真正性識別対象
物が情報記録媒体であるので、情報記録媒体が持つ、経
済的、もしくは社会的な価値を有する情報の真正性が、
より高度な水準で確保された真正性識別体を提供するこ
とができる。請求項４の発明によれば、ホログラム等の
微細凹凸を有するコレステリック液晶層の微細凹凸側転
に耐熱性向上層が積層されているので、この転写シート
を用いて転写を行なえば、熱や圧力が加わっても、ホロ
グラム等の微細凹凸が消失しにくく、ホログラム等の微
細凹凸を有するコレステリック液晶層の真正性識別機能
が保持され、従って、真正性識別機能の耐性が向上した
真正性識別構造を真正性識別対称物上に適用し得る真正
性識別構造転写シートを提供することができる。請求項
５の発明によれば、請求項４の発明の効果に加え、転写
後の最表層となり得る保護層が積層されたことにより、
物理的および化学的耐久性が高められた真正性識別構造
を真正性識別対称物上に適用し得る真正性識別構造転写
シートを提供することができる。According to the first aspect of the present invention, the heat resistance improving layer is laminated on the side of the cholesteric liquid crystal layer having fine irregularities such as holograms, which is laminated on the authenticity identifying object, on the side having fine irregularities. Therefore, even if heat or pressure is applied carelessly, fine irregularities such as holograms are hard to disappear, and the authenticity discriminating function of the cholesteric liquid crystal layer having fine irregularities such as holograms is retained. It is possible to provide an authentic discriminator having improved durability against heat and pressure. According to the invention of claim 2, in addition to the effect of the invention of claim 1, since the protective layer is laminated on the side of the cholesteric liquid crystal layer on which there is no fine unevenness, the physical and chemical properties of the surface of the authenticity identifying structure can be improved. It is possible to provide an authentic discriminator having high durability. According to the invention of claim 3, in addition to the effect of the invention of claim 1 or claim 2, since the authenticity identification object is an information recording medium, the economic or social value of the information recording medium is The authenticity of information that has
It is possible to provide an authenticity identifier secured at a higher level. According to the invention of claim 4, since the heat resistance improving layer is laminated on the fine irregularities of the cholesteric liquid crystal layer having fine irregularities such as a hologram, the heat resistance improving layer is laminated. Even if added, the fine unevenness of the hologram or the like is hard to disappear, and the authenticity identifying function of the cholesteric liquid crystal layer having the fine unevenness of the hologram or the like is retained. Therefore, the authenticity identifying structure with improved resistance of the authenticity identifying function is provided. An authentic identification structure transfer sheet applicable to an authentic identification symmetric object can be provided. According to the invention of claim 5, in addition to the effect of the invention of claim 4, since a protective layer which can be an outermost layer after transfer is laminated,
It is possible to provide an authenticity identification structure transfer sheet to which an authenticity identification structure having enhanced physical and chemical durability can be applied on an authenticity identification symmetrical object.
【図１】真正性識別体を示す断面図である。FIG. 1 is a cross-sectional view showing an authenticity identifying body.
【図２】本発明のコレステリック液晶層５の光学的性質
を示す断面図である。FIG. 2 is a cross-sectional view showing the optical properties of the cholesteric liquid crystal layer 5 of the present invention.
【図３】真正性識別構造転写シートを示す断面図であ
る。FIG. 3 is a cross-sectional view showing an authenticity identification structure transfer sheet.
１ 真正性識別体 ２ 真正性識別対象物 ３ 接着剤層 ４ 耐熱性向上層 ５ コレステリック液晶層（５ａ；微細凹凸） ６ 保護層 1 authenticity identifier 2 Authenticity identification target 3 Adhesive layer 4 Heat resistance improvement layer 5 Cholesteric liquid crystal layer (5a; fine unevenness) 6 protective layer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ４２Ｄ 15/10 ５４１ Ｂ４２Ｄ 15/10 ５４１Ａ ４Ｆ１００ Ｇ０２Ｂ 5/18 Ｇ０２Ｂ 5/18 Ｇ０２Ｆ 1/13 ５０５ Ｇ０２Ｆ 1/13 ５０５ Ｇ０３Ｈ 1/18 Ｇ０３Ｈ 1/18 // Ｇ０７Ｄ 7/20 Ｇ０７Ｄ 7/20 Ｆターム(参考） 2C005 HA10 HB02 HB03 HB05 HB09 HB10 HB11 HB12 HB13 HB14 HB20 JA18 JB08 JB09 KA02 LA19 LA20 2H049 BA05 BA43 BB62 BC08 BC14 BC21 2H088 EA20 EA48 EA62 FA16 FA18 FA29 GA03 HA04 MA02 MA13 MA16 2K008 AA11 AA13 EE04 FF12 FF13 GG05 HH11 3E041 AA01 AA02 AA03 AA10 BA11 BB03 4F100 AK51 AR00C AR00E AS00D AT00A BA04 BA05 BA07 BA10A BA10D BA10E CB00B CB02 DD07D EH46 EJ19 EJ42 GB71 GB90 JA11D JJ03 JJ03C JL12 JL12E JN30D ─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. 7 Identification code FI theme code (reference) B42D 15/10 541 B42D 15/10 541A 4F100 G02B 5/18 G02B 5/18 G02F 1/13 505 G02F 1 / 13 505 G03H 1/18 G03H 1/18 // G07D 7/20 G07D 7/20 F term (reference) 2C005 HA10 HB02 HB03 HB05 HB09 HB10 HB11 HB12 HB13 HB14 HB20 JA18 JB08 JB09 KA02 LA19 LA20 2H021 BC08 BA43 BA43 2H088 EA20 EA48 EA62 FA16 FA18 FA29 GA03 HA04 MA02 MA13 MA16 2K008 AA11 AA13 EE04 FF12 FF13 GG05 HH11 3E041 AA01 AA02 AA03 AA10 BA11 BB03 JJ90 CB07 BB90 EDBA00B46E07B11BA11BA10BA42BA10BA10BA02BA10BA10BA10BA10BA02BA10BA10BA10BA10BA02BA10BA10BA10BA10BA10BA02BA10BA10BA02BA10BA10BA01 JL12 JL12E JN30D
Claims (5)
着剤層を介し、少なくとも、耐熱性向上層、および前記
真正性識別対象物側の面に光回折構造の微細凹凸を有す
るコレステリック液晶層が順に積層されたことを特徴と
する真正性識別構造を備えた真正性識別体。1. A cholesteric material having at least a heat resistance improving layer and, if necessary, an adhesive layer on the authentic identification object, and fine irregularities of a light diffraction structure on the surface on the authentic identification object side. An authenticity discriminating body having an authenticity discriminating structure characterized in that liquid crystal layers are laminated in order.
向上層が積層されたのとは反対側に保護層が積層された
ことを特徴とする請求項１記載の真正性識別構造を備え
た真正性識別体。2. The authenticity-providing authenticity-providing structure according to claim 1, wherein a protective layer is laminated on a side of the cholesteric liquid crystal layer opposite to the laminated layer on which the heat resistance improving layer is laminated. Identification body.
対象物が情報記録媒体であることを特徴とする請求項１
または請求項２記載の真正性識別構造を備えた真正性識
別体。3. The authenticity identifying object having the authenticity identifying structure is an information recording medium.
Alternatively, an authenticity discriminating body comprising the authenticity discriminating structure according to claim 2.
が積層されており、前記転写層は、前記離型性シート状
基材側から、少なくとも、保護層、前記離型性シート状
基材側とは反対側の面に光回折構造の微細凹凸を有する
コレステリック液晶層、耐熱性向上層、および接着剤層
が順に積層した構造からなるものであることを特徴とす
る真正性識別構造転写シート。4. A transfer layer is laminated on a releasable surface of a releasable sheet-shaped substrate, and the transfer layer is at least a protective layer and the release layer from the releasable sheet-shaped substrate side. Of a cholesteric liquid crystal layer having fine irregularities of a light-diffraction structure on the surface opposite to the base sheet side, a heat resistance improving layer, and an adhesive layer are laminated in this order. Transfer sheet for gender identification structure.
シート状基材側に保護層が積層されたことを特徴とする
請求項４記載の真正性識別構造転写シート。5. The transfer sheet for authenticity identification structure according to claim 4, wherein a protective layer is laminated on the releasable sheet-like substrate side of the cholesteric liquid crystal layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001382513A JP4515007B2 (en) | 2001-12-17 | 2001-12-17 | Authenticity discriminator and authenticity discriminating structure transfer sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001382513A JP4515007B2 (en) | 2001-12-17 | 2001-12-17 | Authenticity discriminator and authenticity discriminating structure transfer sheet |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008214105A Division JP4743448B2 (en) | 2008-08-22 | 2008-08-22 | Authenticity discriminator and authenticity discriminating structure transfer sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003185835A true JP2003185835A (en) | 2003-07-03 |
| JP4515007B2 JP4515007B2 (en) | 2010-07-28 |
Family
ID=27592831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001382513A Expired - Fee Related JP4515007B2 (en) | 2001-12-17 | 2001-12-17 | Authenticity discriminator and authenticity discriminating structure transfer sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4515007B2 (en) |
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005099090A (en) * | 2003-09-22 | 2005-04-14 | Toppan Printing Co Ltd | Partial diffractive structure transferring sheet and its manufacturing method |
| WO2005065962A1 (en) * | 2004-01-12 | 2005-07-21 | Securency Pty Limited | Security document incorporating optical component |
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