JP2006247871A - Antifalsification card - Google Patents
Antifalsification card Download PDFInfo
- Publication number
- JP2006247871A JP2006247871A JP2005063796A JP2005063796A JP2006247871A JP 2006247871 A JP2006247871 A JP 2006247871A JP 2005063796 A JP2005063796 A JP 2005063796A JP 2005063796 A JP2005063796 A JP 2005063796A JP 2006247871 A JP2006247871 A JP 2006247871A
- Authority
- JP
- Japan
- Prior art keywords
- card
- substrate
- forgery prevention
- pattern
- metal
- 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.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 66
- 239000002082 metal nanoparticle Substances 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 20
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims description 38
- 230000002265 prevention Effects 0.000 claims description 30
- 239000011241 protective layer Substances 0.000 claims description 11
- 239000011230 binding agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 33
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 30
- 239000000243 solution Substances 0.000 description 25
- 229910052751 metal Inorganic materials 0.000 description 19
- 239000002184 metal Substances 0.000 description 19
- 235000019441 ethanol Nutrition 0.000 description 14
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 230000012010 growth Effects 0.000 description 10
- 239000002923 metal particle Substances 0.000 description 10
- 239000003638 chemical reducing agent Substances 0.000 description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 9
- 239000007771 core particle Substances 0.000 description 8
- 239000002270 dispersing agent Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 6
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 6
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000011668 ascorbic acid Substances 0.000 description 6
- 229960005070 ascorbic acid Drugs 0.000 description 6
- 235000010323 ascorbic acid Nutrition 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 6
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 239000002105 nanoparticle Substances 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 5
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910021645 metal ion Inorganic materials 0.000 description 4
- 229920005668 polycarbonate resin Polymers 0.000 description 4
- 239000004431 polycarbonate resin Substances 0.000 description 4
- 229920002873 Polyethylenimine Polymers 0.000 description 3
- 229920002125 Sokalan® Polymers 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 235000011187 glycerol Nutrition 0.000 description 3
- 239000006249 magnetic particle Substances 0.000 description 3
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(ii) nitrate Chemical compound [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000004584 polyacrylic acid Substances 0.000 description 3
- 239000004417 polycarbonate Substances 0.000 description 3
- 229920000515 polycarbonate Polymers 0.000 description 3
- 229940079877 pyrogallol Drugs 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 229910001961 silver nitrate Inorganic materials 0.000 description 3
- 239000001509 sodium citrate Substances 0.000 description 3
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 3
- DTNJZLDXJJGKCM-UHFFFAOYSA-K sodium;trichlorogold Chemical compound [Na].Cl[Au](Cl)Cl DTNJZLDXJJGKCM-UHFFFAOYSA-K 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 238000003618 dip coating Methods 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 102100030310 5,6-dihydroxyindole-2-carboxylic acid oxidase Human genes 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 101000773083 Homo sapiens 5,6-dihydroxyindole-2-carboxylic acid oxidase Proteins 0.000 description 1
- -1 NaBH 4 Chemical compound 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 241000219793 Trifolium Species 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005518 electrochemistry Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000007773 growth pattern Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Landscapes
- Credit Cards Or The Like (AREA)
Abstract
Description
本発明は、偽造防止カードに関する。 The present invention relates to an anti-counterfeit card.
近年、キャッシュカード等の発行枚数の増加と共に、本人の知らないうちにキャッシュカードのデータや暗証番号が盗まれ、現金が引き落とされるスキミングという手口の偽造カード犯罪など、カード偽造による被害が年々増加の一途をたどり、社会に混乱をもたらしている。 In recent years, with the increase in the number of issued cash cards, etc., damages due to card counterfeiting have been increasing year by year, such as forgery card crimes such as skimming, in which cash card data and passwords are stolen without the knowledge of the person and cash is withdrawn. Going forward, it is causing disruption to society.
これに対し、指紋や静脈認証等の生体情報によるカード認証が研究開発されてきている。しかし、指紋や生体認証等の生体情報は、より確実な本人確認の方法であるが、プライバシー保護の観点から情報の保護には今まで以上の注意が必要となる。また、ＩＣカードの普及も待たれるが、高価であり偽造防止の観点からも必ずしも十分ではない。 In contrast, card authentication based on biometric information such as fingerprint and vein authentication has been researched and developed. However, biometric information such as fingerprints and biometric authentication is a more reliable method of identity verification, but more attention is required to protect information from the viewpoint of privacy protection. Also, the spread of IC cards is awaited, but it is expensive and not always sufficient from the viewpoint of preventing counterfeiting.
そのため、カード本体に特有の情報を持たせて、電子情報のみをコピーしても偽造が出来ないような偽造防止カードが望まれている。 For this reason, there is a demand for a forgery-preventing card that cannot be counterfeited even if only the electronic information is copied with the card body having unique information.
ところで、非特許文献１には、インジウムスズオキサイド（ＩＴＯ）上に、金属ナノ粒子を固定化する技術が報告されている。
本発明は、基板上でランダムに成長させた金属ナノ粒子を識別標識として用いた高度に偽造防止性が付与されたカード、その製造方法、及び該偽造防止カードを用いた認証識別方法を提供することを目的とする。 The present invention provides a highly imparted anti-counterfeit card using metal nanoparticles randomly grown on a substrate as an identification label, a manufacturing method thereof, and an authentication and identification method using the anti-counterfeit card. For the purpose.
本発明者は、上記の課題を解決するために鋭意研究を行った結果、基板上に金属ナノ粒子をランダムに成長させて得られる金属ナノ粒子成長パターンが、微細構造を有しかつ二度と同じパターンが形成されないことに着目し、これをカードに組み込むことにより、光レーザー、磁気ヘッド等で読み取りが可能な極めて高い偽造防止性を有するカードとして利用できることを見出した。本発明者は、かかる知見に基づき、さらに研究を重ねた結果、本発明を完成するに至った。 As a result of earnest research to solve the above problems, the present inventor has found that a metal nanoparticle growth pattern obtained by randomly growing metal nanoparticles on a substrate has a fine structure and is the same pattern twice. Focusing on the fact that no is formed, it was found that by incorporating this into a card, it can be used as a card with extremely high anti-counterfeiting properties that can be read by an optical laser, a magnetic head, or the like. As a result of further research based on this knowledge, the present inventor has completed the present invention.
即ち、本発明は、次に示す偽造防止カード、その製造方法、及び該偽造防止カードを用いた認証識別方法を提供する。 That is, the present invention provides the following anti-counterfeit card, a manufacturing method thereof, and an authentication identification method using the anti-counterfeit card.
項１．金属ナノ粒子のパターンを有する基板がカードに組み込まれてなる偽造防止カード。 Item 1. A forgery prevention card in which a substrate having a pattern of metal nanoparticles is incorporated in a card.
項２．金属ナノ粒子が基板表面に付着してパターンを形成している項１に記載の偽造防止カード。 Item 2. Item 2. The forgery-preventing card according to Item 1, wherein the metal nanoparticles are attached to the substrate surface to form a pattern.
項３．金属ナノ粒子が付着する基板表面に保護層を有する項２に記載の偽造防止カード。 Item 3. Item 3. The forgery-preventing card according to Item 2, which has a protective layer on the surface of the substrate to which the metal nanoparticles adhere.
項４．基板表面に付着した金属ナノ粒子の平均粒子径が１〜１０００ｎｍ程度である項２又は３に記載の偽造防止カード。 Item 4. Item 4. The forgery prevention card according to Item 2 or 3, wherein the average particle size of the metal nanoparticles attached to the substrate surface is about 1 to 1000 nm.
項５．金属ナノ粒子とバインダーとの混合物を基板表面にコートして得られる基板がカードに組み込まれてなる偽造防止カード。 Item 5. An anti-counterfeit card in which a substrate obtained by coating a surface of a substrate with a mixture of metal nanoparticles and a binder is incorporated in the card.
項６．カードが、キャッシュカード、クレジットカード、デビットカード、セキュリティーカード、身分証明書カード及び会員カードからなる群より選ばれる少なくとも１種である項１〜５のいずれかに記載の偽造防止カード。 Item 6. Item 6. The forgery prevention card according to any one of Items 1 to 5, wherein the card is at least one selected from the group consisting of a cash card, a credit card, a debit card, a security card, an identification card, and a membership card.
項７．項１〜６のいずれかに記載の偽造防止カードを用いた識別方法であって、該偽造防止カードの金属ナノ粒子のパターンを有する基板部分を、光レーザー又は磁気ヘッドを用いて識別することを特徴とする識別方法。 Item 7. The identification method using the forgery prevention card according to any one of Items 1 to 6, wherein the substrate portion having the metal nanoparticle pattern of the forgery prevention card is identified using an optical laser or a magnetic head. Feature identification method.
項８．項１〜６のいずれかに記載の偽造防止カードの使用方法であって、使用前に前記偽造防止カードにおける金属ナノ粒子のパターンを情報として取得し、該偽造防止カード使用時に上記の読み取り装置により読み取った情報を照合させて両者が一致していることを確認して偽造カードでない本物であることを確認し、その後該偽造防止カードに内蔵された情報にアクセスする使用方法。 Item 8. The method of using the forgery prevention card according to any one of Items 1 to 6, wherein the pattern of the metal nanoparticles in the forgery prevention card is acquired as information before use, and the reading device is used when the forgery prevention card is used. A method of use in which the read information is collated to confirm that the two match to confirm that the information is not a forgery card and to access information stored in the forgery prevention card.
以下、本発明を詳述する。
１．偽造防止カード
本発明の偽造防止カードは、金属ナノ粒子のパターンを表面に有する基板（チップ）がカードに組み込まれたものである。ここで金属ナノ粒子とは、ナノメートルの平均粒子径を有する金属粒子を意味する。
The present invention is described in detail below.
1. Anti-Counterfeit Card The anti-counterfeit card of the present invention is obtained by incorporating a substrate (chip) having a metal nanoparticle pattern on the surface thereof. Here, the metal nanoparticles mean metal particles having an average particle diameter of nanometers.
本発明で用いられるカードとは、使用者が特定され使用されるカードであれば特に限定はなく、例えば、キャッシュカード、クレジットカード、デビットカード、セキュリティーカード、身分証明書（学生証、パスポート、社員証等）カード、各種会員カード等が挙げられ、いずれのカードにも適用できる。 The card used in the present invention is not particularly limited as long as the user is specified and used. For example, cash card, credit card, debit card, security card, identification card (student ID card, passport, employee) Card), various membership cards, etc., which can be applied to any card.
金属ナノ粒子を有する基板としては、プラスチック、ガラス、金属等いずれの材質であってもよい。強度の点から、ガラスが好適である。その大きさや形状も、カードの表面や内部に収納できる大きさや形状であれば特に限定はないが、現行のカードに取り付けが容易な四角形状（正方形、長方形、ストライブ形状等）、円形、三角形、楕円形等、或いはハートやクローバー等の複雑な形状であってもよい。基板の厚みは問わないが、従来のカードの厚みに合わせて１ｍｍ以下、特に０．１〜０．５ｍｍ程度が好ましい。基板面に凹凸があってもよいが、読取機の操作性を考慮して、基板の外形は円形又は四角形状で基板面は平滑であるのが好ましい。 The substrate having metal nanoparticles may be any material such as plastic, glass and metal. From the viewpoint of strength, glass is preferred. The size and shape of the card are not particularly limited as long as the size and shape can be stored on the surface of the card or inside the card. However, a square shape (square, rectangle, stripe shape, etc.), circle, or triangle that can be easily attached to the current card. , An elliptical shape, or a complicated shape such as a heart or a clover. Although the thickness of a board | substrate is not ask | required, 1 mm or less according to the thickness of the conventional card | curd, especially about 0.1-0.5 mm are preferable. Although the substrate surface may be uneven, it is preferable that the outer shape of the substrate is circular or square and the substrate surface is smooth in consideration of the operability of the reader.
本発明の偽造防止カードは、基板上に金属ナノ粒子の微細なパターンを有している。この粒子パターンは、ナノオーダーの粒子（粒状、竿状、針状等を含む）から形成されており、通常、平均粒子径が１〜１０００ｎｍ程度、特に５〜１００ｎｍ程度の金属ナノ粒子が、基板上にランダムに形成されている。該金属ナノ粒子のパターンは、その成長過程で同一のものが形成されない点に特徴を有し、本発明はこのパターンの特徴を利用して偽造防止カードに適用したものである。ここで、平均粒子径とは、走査型電子顕微鏡（ＳＥＭ）で測定した粒子の平均径を意味する。 The anti-counterfeit card of the present invention has a fine pattern of metal nanoparticles on a substrate. This particle pattern is formed from nano-order particles (including granular, bowl-like, needle-like, etc.). Usually, metal nanoparticles having an average particle diameter of about 1 to 1000 nm, particularly about 5 to 100 nm are formed on the substrate. It is randomly formed on the top. The pattern of the metal nanoparticles is characterized in that the same pattern is not formed during the growth process, and the present invention is applied to a forgery prevention card using the characteristics of this pattern. Here, an average particle diameter means the average diameter of the particle | grains measured with the scanning electron microscope (SEM).
該金属粒子パターンを保護するために、金属ナノ粒子のパターンを有する基板表面上に保護層を有しているのが好ましい。保護層は、被覆により金属粒子の劣化を抑制することができ、耐久性があり、かつ透明性の高いものであることが好ましく、例えば、結晶性ガラス、非晶質ガラス等のガラス質材料、ポリカーボネート等の樹脂材料、ＤＬＣ（ダイヤモンド・ライク・カーボン）などの材料が好ましい。特にポリカーボネート等の樹脂材料が好ましい。保護層の厚さは、通常、１０〜１００μｍ程度であればよい。 In order to protect the metal particle pattern, it is preferable to have a protective layer on the substrate surface having the metal nanoparticle pattern. The protective layer can suppress deterioration of the metal particles by coating, and is preferably durable and highly transparent. For example, a glassy material such as crystalline glass or amorphous glass, A resin material such as polycarbonate and a material such as DLC (diamond-like carbon) are preferable. In particular, a resin material such as polycarbonate is preferable. The thickness of the protective layer is usually about 10 to 100 μm.
金属ナノ粒子パターンを有する基板は、カードの表面のいずれかの部分に配置されている。読み取りの簡便性を考慮して、カード中央部以外の端部分に基板を配置するのが好ましい。 The substrate having the metal nanoparticle pattern is disposed on any part of the surface of the card. In consideration of ease of reading, it is preferable to dispose the substrate at an end portion other than the central portion of the card.
本発明の偽造防止カードの具体例を、図１に示す。図１に示す偽造防止カードは、金属微粒子のパターンを表面に有する円形の基板（チップ）がカードの角付近に配置されてなるものである。
２．偽造防止カードの製造方法
本発明の偽造防止カードは、例えば、次のような方法で製造することができる。
A specific example of the forgery prevention card of the present invention is shown in FIG. The anti-counterfeit card shown in FIG. 1 is formed by arranging a circular substrate (chip) having a pattern of fine metal particles on the surface in the vicinity of the corner of the card.
2. Method for Producing Forgery Prevention Card The forgery prevention card of the present invention can be produced, for example, by the following method.
基板を、基板上で成長させたい平均粒子径１０ｎｍ以下の金属ナノ粒子の分散した溶液（以下、「核粒子分散液」とも呼ぶ）に浸し、粒子成長の核となる金属ナノ粒子（核粒子）を基板に付着させる。各粒子が吸着された基板を、成長させたい金属イオンを加えた溶液（以下、「粒子成長溶液」とも呼ぶ）に浸し、基板に付着した金属ナノ粒子を成長させる。金属の種類としては、金、白金、銀等の貴金属類や鉄、銅、ニッケルの卑金属まで、特定はしない。 Immerse the substrate in a solution in which metal nanoparticles with an average particle diameter of 10 nm or less to be grown on the substrate are dispersed (hereinafter also referred to as “nuclear particle dispersion”) to form metal nanoparticles (nuclear particles) that serve as the core of particle growth. Is attached to the substrate. The substrate on which each particle is adsorbed is immersed in a solution to which a metal ion to be grown is added (hereinafter also referred to as “particle growth solution”) to grow metal nanoparticles attached to the substrate. The types of metals are not specified, including noble metals such as gold, platinum and silver, and base metals such as iron, copper and nickel.
核粒子分散液は、金属源の金属塩、分散剤、還元剤及び溶媒から調整することができる。金属源は、塩化物、硝酸塩等の金属塩が例示され、溶液中で金属イオンになるものであればかまわない。具体的には塩化金ナトリウム、塩化白金酸、硝酸銀、硝酸ニッケル等が挙げられる。分散剤は、クエン酸ナトリウムのみならず、クエン酸、ポリビニルピロリドン、ポリアクリル酸、ポリエチレンイミン、エチレングリコール、グリセリン、エチルアルコール、ドデシル硫酸ナトリウム、ＣＴＡＢ等も可能である。還元剤は、NaBH4、エタノール、エチレングリコール、ヒドロキノン、ピロガロール、ヒドラジン、アルコルビン酸等が挙げられる。 The core particle dispersion can be prepared from a metal salt of a metal source, a dispersant, a reducing agent, and a solvent. Examples of the metal source include metal salts such as chlorides and nitrates, and any metal source may be used as long as it becomes a metal ion in the solution. Specific examples include sodium gold chloride, chloroplatinic acid, silver nitrate, and nickel nitrate. The dispersant may be not only sodium citrate but also citric acid, polyvinyl pyrrolidone, polyacrylic acid, polyethyleneimine, ethylene glycol, glycerin, ethyl alcohol, sodium dodecyl sulfate, CTAB, and the like. Examples of the reducing agent include NaBH 4 , ethanol, ethylene glycol, hydroquinone, pyrogallol, hydrazine, and ascorbic acid.
粒子成長溶液は、金属源、分散剤、添加剤及び還元剤を含有する。金属源としては、塩化金ナトリウム、塩化白金酸、硝酸銀、硝酸ニッケルが挙げられ、CATB、分散剤としては、クエン酸、ポリビニルピロリドン、ポリアクリル酸、ポリエチレンイミン、エチレングリコール、グリセリン、エチルアルコール、ドデシル硫酸ナトリウム等が挙げられ、添加剤としては、水酸化ナトリウム、水酸化カリウム、炭酸ナトリウム等の水酸化物や炭酸塩、アンモニア等が挙げられる。還元剤としては、アスコルビン酸、NaBH4、エタノール、エチレングリコール、ヒドロキノン、ピロガロール、ヒドラジン、アルコルビン酸が挙げられる。より具体的には、金属が金の場合、純水に塩化金酸、CTAB、アスコルビン酸及び水酸化ナトリウムを加えた水溶液が挙げられる。 The particle growth solution contains a metal source, a dispersant, an additive and a reducing agent. Metal sources include sodium gold chloride, chloroplatinic acid, silver nitrate, and nickel nitrate. CATB and dispersants include citric acid, polyvinylpyrrolidone, polyacrylic acid, polyethyleneimine, ethylene glycol, glycerin, ethyl alcohol, and dodecyl. Examples of the additive include sodium hydroxide, potassium hydroxide, sodium carbonate and other hydroxides, carbonates, ammonia and the like. Examples of the reducing agent include ascorbic acid, NaBH 4 , ethanol, ethylene glycol, hydroquinone, pyrogallol, hydrazine, and ascorbic acid. More specifically, when the metal is gold, an aqueous solution in which chloroauric acid, CTAB, ascorbic acid and sodium hydroxide are added to pure water can be mentioned.
また、核粒子分散液又は粒子成長溶液の溶媒は純水のみならず、エチルアルコール、エチレングリコール等のアルコール類、トルエン、ベンゼン等の有機溶媒を用いても良い。 The solvent of the core particle dispersion or particle growth solution is not limited to pure water, and may be an alcohol such as ethyl alcohol or ethylene glycol, or an organic solvent such as toluene or benzene.
核粒子分散液を調製する際の温度は、常温（２０℃程度）〜２００℃、特に核粒子分散液は２０〜１００℃程度が好ましい。基板上の核粒子を成長させる際の金属イオン含有溶液（粒子成長溶液）の温度は、２０〜３０℃程度が好ましい。圧力は大気圧で良い。 The temperature at which the core particle dispersion is prepared is from room temperature (about 20 ° C.) to 200 ° C., and particularly preferably the core particle dispersion is about 20 to 100 ° C. The temperature of the metal ion-containing solution (particle growth solution) when growing the core particles on the substrate is preferably about 20 to 30 ° C. The pressure may be atmospheric pressure.
各溶液における金属源のモル濃度は、通常０．００１〜０．５Ｍ程度であればよい。また、分散剤及び還元剤の添加量は、それぞれ、各溶液における金属源のモル濃度に対して１／１０〜１００倍の濃度で加えることが出来る。ただし、エタノールやエチレングリコールのように溶媒としても用いるものはこの限りではない。 The molar concentration of the metal source in each solution may normally be about 0.001 to 0.5M. Moreover, the addition amount of a dispersing agent and a reducing agent can respectively be added with the density | concentration of 1-10 to 100 times with respect to the molar concentration of the metal source in each solution. However, those used as a solvent such as ethanol and ethylene glycol are not limited to this.
粒子が成長した基板を粒子成長溶液から取出し、付着した界面活性剤、還元剤等を除去する。洗浄方法は特に特定はしないが、付着した金属ナノ粒子がとれないように留意しながら流水又は超音波洗浄することが好ましい。 The substrate on which the particles are grown is taken out of the particle growth solution, and the attached surfactant, reducing agent, etc. are removed. Although the cleaning method is not particularly specified, it is preferable to perform running water or ultrasonic cleaning while taking care not to remove the attached metal nanoparticles.
次いで、得られた粒子パターンが成長した基板表面を保護する為、粒子が成長した面をコーティングして保護層を形成する。保護層は透明性が高くかつ耐久性が高い樹脂、ガラスなどの素材が好ましく、上記したガラス質材料、樹脂材料等が用いられ、特にポリカーボネートが好ましい。コーティング方法は、特に指定はしないがディップコーティング又はスピンコーティングが好ましい。表面保護層の形成は、カード組込前、後、どちらでも良く、公知の方法を採用できる。 Next, in order to protect the substrate surface on which the obtained particle pattern is grown, the surface on which the particle is grown is coated to form a protective layer. The protective layer is preferably made of a material having high transparency and high durability, such as a resin or glass. The glassy material or resin material described above is used, and polycarbonate is particularly preferable. The coating method is not particularly specified, but dip coating or spin coating is preferable. The surface protective layer may be formed either before or after the card is assembled, and a known method can be adopted.
粒子が付着した基板のカードへの組込方法は、対象となるカードに粒子が付着した基板と同じサイズの穴を空けて該基板をその穴に埋め込んだり、又は、該基板をカードに直接貼り付けても良い。かくして本発明の偽造防止カードが作成される。 The method for assembling the substrate with particles attached to the card is to make a hole of the same size as the substrate with particles attached to the target card and embed the substrate in the hole, or directly attach the substrate to the card. May be attached. Thus, the forgery prevention card of the present invention is created.
或いは、金属源、分散剤、還元剤及び溶媒を含む溶液から、基板に付着させるのに適した所望の大きさに金属ナノ粒子を成長させた後、これを単離調整し、得られた金属ナノ粒子とバインダーとの混合物を基板上に塗布して、成長した粒子を基板に接着させてもよい。成長した金属ナノ粒子の平均粒子径は、１〜５００ｎｍ程度、５〜１００ｎｍ程度であればよい。 Alternatively, after growing metal nanoparticles to a desired size suitable for attachment to a substrate from a solution containing a metal source, a dispersant, a reducing agent and a solvent, this is isolated and adjusted, and the resulting metal A mixture of nanoparticles and binder may be applied onto the substrate to adhere the grown particles to the substrate. The average particle diameter of the grown metal nanoparticles may be about 1 to 500 nm and about 5 to 100 nm.
金属源は、塩化物、硝酸塩等の金属塩が例示され、溶液中で金属イオンになるものであればかまわない。具体的には塩化金ナトリウム、塩化白金酸、硝酸銀、硝酸ニッケル等が挙げられる。分散剤は、クエン酸ナトリウムのみならず、クエン酸、ポリビニルピロリドン、ポリアクリル酸、ポリエチレンイミン、エチレングリコール、グリセリン、エチルアルコール、ドデシル硫酸ナトリウム、ＣＴＡＢ等も可能である。還元剤は、NaBH4、エタノール、エチレングリコール、ヒドロキノン、ピロガロール、ヒドラジン、アルコルビン酸等が挙げられる。なお、添加剤として水酸化ナトリウムや水酸化カリウムや炭酸ナトリウム等の水酸化物や炭酸塩、アンモニアなどを加えても良い。 Examples of the metal source include metal salts such as chlorides and nitrates, and any metal source may be used as long as it becomes a metal ion in the solution. Specific examples include sodium gold chloride, chloroplatinic acid, silver nitrate, and nickel nitrate. The dispersant may be not only sodium citrate but also citric acid, polyvinyl pyrrolidone, polyacrylic acid, polyethyleneimine, ethylene glycol, glycerin, ethyl alcohol, sodium dodecyl sulfate, CTAB, and the like. Examples of the reducing agent include NaBH 4 , ethanol, ethylene glycol, hydroquinone, pyrogallol, hydrazine, and ascorbic acid. In addition, you may add hydroxide, carbonate, ammonia, etc., such as sodium hydroxide, potassium hydroxide, and sodium carbonate as an additive.
また、溶媒は純水のみならず、エチルアルコール、エチレングリコール等のアルコール類、トルエン、ベンゼン等の有機溶媒を用いても良い。 In addition to pure water, the solvent may be an alcohol such as ethyl alcohol or ethylene glycol, or an organic solvent such as toluene or benzene.
金属ナノ粒子を調製する際の溶液の温度は、常温（２０℃程度）〜２００℃、特に核粒子分散液は２０〜１００℃程度が好ましい。圧力は大気圧で良い。 The temperature of the solution in preparing the metal nanoparticles is preferably from room temperature (about 20 ° C.) to 200 ° C., and in particular, the core particle dispersion is preferably about 20 to 100 ° C. The pressure may be atmospheric pressure.
溶液における金属源のモル濃度は、通常０．００１〜０．５Ｍ程度であればよい。また、分散剤及び還元剤の添加量は、それぞれ、該溶液における金属源のモル濃度に対して１／１０〜１００倍の濃度で加えることが出来る。ただし、エタノールやエチレングリコールのように溶媒としても用いるものはこの限りではない。 The molar concentration of the metal source in the solution may usually be about 0.001 to 0.5M. Moreover, the addition amount of a dispersing agent and a reducing agent can respectively be added by the density | concentration of 1/10 to 100 times with respect to the molar concentration of the metal source in this solution. However, those used as a solvent such as ethanol and ethylene glycol are not limited to this.
上記で調製した金属粒子を減圧乾燥又は濃縮する。得られた乾燥金属粒子を、バインダーと混合して基板に塗布する。バインダーとしては、例えば、フェノール系樹脂、ウレタン系樹脂、アクリル系樹脂、エポキシ系樹脂、ポリカーボネート系樹脂、天然樹脂、もしくはその変性樹脂などを利用することができる。特に、透明性、耐久性等の点からポリカーボネート系樹脂が好ましい。コーティング方法は特に指定はしないが、ディップコーティング又はスピンコーティングが好ましい。バインダーとともに金属粒子を基板に塗布した後乾燥する。 The metal particles prepared above are dried or concentrated under reduced pressure. The obtained dry metal particles are mixed with a binder and applied to a substrate. As the binder, for example, a phenol resin, a urethane resin, an acrylic resin, an epoxy resin, a polycarbonate resin, a natural resin, or a modified resin thereof can be used. In particular, polycarbonate resins are preferable from the viewpoint of transparency and durability. The coating method is not particularly specified, but dip coating or spin coating is preferable. The metal particles are applied to the substrate together with the binder and then dried.
乾燥して得られた基板は、そのままカードへの組込むこととができる。なお、上記のようにバインダーとともに金属粒子を基板に塗布する場合でも、基板表面の保護性を向上させるため、更に上記と同様に保護層を形成してもよい。カードへの組込みは、従来のカードに基板と同じサイズの穴を空け埋め込むか、又は、カードに直接貼り付けても良い。かくして本発明の偽造防止カードが作成される。
３．偽造防止カードの使用方法
本発明の偽造防止カードは、上記のようにカードの一部に、金属ナノ粒子のパターンを表面に有する基板（チップ）が組み込まれている。この金属ナノ粒子のパターンを利用して、その微細な相違を識別することにより偽造防止性が付与される。
The substrate obtained by drying can be incorporated into a card as it is. Even when the metal particles are applied to the substrate together with the binder as described above, a protective layer may be further formed in the same manner as described above in order to improve the protection of the substrate surface. For the incorporation into the card, a hole having the same size as that of the substrate is embedded in the conventional card, or the card may be directly attached to the card. Thus, the forgery prevention card of the present invention is created.
3. Method for Using Anti-Counterfeit Card In the anti-counterfeit card of the present invention, a substrate (chip) having a metal nanoparticle pattern on the surface is incorporated in a part of the card as described above. By using this metal nanoparticle pattern, anti-counterfeiting properties are imparted by identifying the minute differences.
本発明の偽造防止カードは、例えば、基板（チップ）部分を光レーザー、磁気ヘッド等の読み取り装置によりこの金属ナノ粒子のパターンを読み取り識別する。具体的には、あらかじめ使用前のカードにおける金属ナノ粒子のパターンを情報として取得し、カード使用時に上記の読み取り装置により読み取った情報を照合させて、両者が一致していることを確認して偽造カードでない本物であることを確認する。 In the forgery-preventing card of the present invention, for example, the pattern of the metal nanoparticles is identified by reading the substrate (chip) portion with a reading device such as an optical laser or a magnetic head. Specifically, the pattern of the metal nanoparticles in the card before use is acquired as information in advance, the information read by the above reading device is collated when the card is used, and the counterfeit is confirmed by confirming that they match. Make sure it's genuine, not a card.
光レーザーで読み取る場合は、通常、光レーザー発信源に本発明の偽造防止カードのチップ部分をかざして、レーザーの反射光を読みとることにより行う。これにより、高い精度で金属ナノ粒子の微細パターンを検出し、高い識別が可能となる。 When reading with an optical laser, the reading is usually performed by holding the chip portion of the anti-counterfeit card of the present invention over the optical laser source and reading the reflected light of the laser. Thereby, the fine pattern of a metal nanoparticle is detected with high precision, and high discrimination becomes possible.
従来のフォトレジスト等を利用したパターンニングでは１００ｎｍ程度が限界であり、ブルーレイディスクで１５０ｎｍ、汎用性の高いＤＶＤでは４００ｎｍでの凹凸の作成が限界である。本技術で製作したパターンは約５ｎｍ幅から製作可能であり、偽造が困難である。 In conventional patterning using a photoresist or the like, about 100 nm is the limit, and in the case of a Blu-ray disc, 150 nm, and in a highly versatile DVD, the creation of irregularities at 400 nm is the limit. A pattern manufactured by this technique can be manufactured from a width of about 5 nm and is difficult to counterfeit.
また、磁気ヘッドで読み取る場合は、本発明の偽造防止カードのチップ部分を任意方向に磁化しておき、これを磁気ヘッドで読み取ることにより行う。これにより、高い精度で金属ナノ粒子の微細パターンを検出し、高い識別が可能となる。 Further, when reading with a magnetic head, the chip portion of the forgery prevention card of the present invention is magnetized in an arbitrary direction, and this is read with the magnetic head. Thereby, the fine pattern of a metal nanoparticle is detected with high precision, and high discrimination becomes possible.
従来の磁気テープなどの磁気記録面は、塗布された磁性体粒子から出来ており、記録を書き、磁化された磁性粒子間には磁化が互いに反転する遷移領域がある。この為、記録密度の高いパターンは作れない。本技術で製作した磁性粒子パターンは粒子間には基板しかなく、遷移領域が無い為、パターンを細密に出来る。この為、偽造が困難となる。 A magnetic recording surface of a conventional magnetic tape or the like is made of coated magnetic particles, and there is a transition region in which magnetization is reversed between the magnetized magnetic particles on which recording is written and magnetized. For this reason, a pattern with high recording density cannot be created. Since the magnetic particle pattern produced by this technology has only a substrate between the particles and no transition region, the pattern can be made fine. For this reason, forgery becomes difficult.
本発明の偽造防止カードにおける金属ナノ粒子のパターンを読み取り装置により読み取り、偽造物カードでないことを確認した後、同カードに内蔵されたＩＣチップなどにアクセスしてカード本来の機能が発揮される。 After reading the pattern of metal nanoparticles in the anti-counterfeit card of the present invention with a reading device and confirming that it is not a forgery card, the IC chip built in the card is accessed and the original function of the card is exhibited.
本発明の偽造防止カードは、ランダムに成長させた金属ナノ粒子を有する基板が組み込まれている。この金属ナノ粒子は、同じパターンは２度と生まれない為、偽造できない一枚特有の情報が得られるという特徴を有している。そのため、偽造が困難であり、スキミング不可能であるという利点を有している。また、指紋や静脈認証等の個人情報を識別条件とするものではないため、プライバシー保護の観点からも有利である。しかも、製造が極めて容易であり、現行のカードに追加出来るという利点も有している。 The anti-counterfeit card of the present invention incorporates a substrate having metal nanoparticles grown at random. This metal nanoparticle has a feature that information unique to one sheet that cannot be counterfeited can be obtained because the same pattern is never generated again. Therefore, forgery is difficult and skimming is impossible. Also, since personal information such as fingerprints and vein authentication is not used as an identification condition, it is advantageous from the viewpoint of privacy protection. Moreover, it has the advantage that it is very easy to manufacture and can be added to existing cards.
次に本発明を、以下の実施例によって更に詳述するが、本発明はこれに限定されるものではない。 Next, the present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.
実施例１
純水18 mlに、0.01M塩化金酸0.5 ml、0.01 Mクエン酸ナトリウム0.5 ml、0.1M NaBH4 0.5 mlを加えて、２５℃で１時間撹拌することにより、平均粒子径４ｎｍの金ナノ粒子が分散した溶液（核粒子分散液）を得た。
Example 1
Purified water 18 ml, 0.01 M chloroauric acid 0.5 ml, 0.01 M sodium citrate 0.5 ml, was added a 0.1M NaBH 4 0.5 ml, and the mixture was stirred for 1 hour at 25 ° C., gold nanoparticles having an average particle size of 4nm A solution (core particle dispersion) was obtained.
この溶液に、円形状（直径１ｃｍ）のプラスチック基板を、２５℃で２時間浸漬して、粒子成長の核となる金属粒子（核粒子）を基板に吸着させた。 A circular plastic substrate (diameter 1 cm) was immersed in this solution at 25 ° C. for 2 hours to adsorb metal particles (nuclear particles) serving as the core of particle growth onto the substrate.
核粒子が吸着された基板を、粒子成長溶液に２５℃で２４時間浸漬して、基板上の粒子を成長させた。粒子成長溶液は、0.1 M CTAB 90 mlに0.01 M 塩化金酸 2.5 ml、0.1 M アスコルビン酸の0.5 ml、0.1 M 水酸化ナトリウム0.5 mlを加えた溶液を用いた。基板上の粒子の平均粒子径は、３０〜６０ｎｍ程度であった。基板上の粒子の走査型電子顕微鏡（ＳＥＭ）写真を図２に示す。なお、（Ｂ）は拡大図である。 The substrate on which the core particles were adsorbed was immersed in a particle growth solution at 25 ° C. for 24 hours to grow particles on the substrate. As the particle growth solution, a solution obtained by adding 2.5 ml of 0.01 M chloroauric acid, 0.5 ml of 0.1 M ascorbic acid and 0.5 ml of 0.1 M sodium hydroxide to 90 ml of 0.1 M CTAB was used. The average particle size of the particles on the substrate was about 30 to 60 nm. A scanning electron microscope (SEM) photograph of particles on the substrate is shown in FIG. (B) is an enlarged view.
得られた基板の金属粒子が成長された面に、ポリカーボネート樹脂をディップコーティングして、厚さ５０μｍの保護層を形成した。 The surface of the obtained substrate on which the metal particles were grown was dip coated with a polycarbonate resin to form a protective layer having a thickness of 50 μm.
保護層を設けた基板を、プラスチック製のカード（８．５ｃｍ×５．４ｃｍ）の一部に貼り付けて本発明の偽造防止カードを製造した。具体例を図１に示す。 The substrate provided with the protective layer was attached to a part of a plastic card (8.5 cm × 5.4 cm) to produce the forgery prevention card of the present invention. A specific example is shown in FIG.
実施例２
エタノールを含む水溶液（エタノール含量50体積％）中に、塩化白金酸（Ｈ２ＰｔＣｌ６）0.5ｍＭ、ポリビニルピロリドン（ＰＶＰ）3ｍＭになるよう各成分を加えて溶液を調製した。溶液を常圧下（0.1ＭＰａ程度）、100℃で、10〜60分加熱撹拌することにより、平均粒子径２〜５ｎｍの白金ナノ粒子が分散成長した溶液を得た。この溶液を蒸発乾固して平均粒子径２〜５ｎｍの白金ナノ粒子を得た。
Example 2
Each component was added to an aqueous solution containing ethanol (ethanol content 50% by volume) so as to be 0.5 mM chloroplatinic acid (H 2 PtCl 6 ) and 3 mM polyvinyl pyrrolidone (PVP) to prepare a solution. The solution was heated and stirred at 100 ° C. under normal pressure (about 0.1 MPa) for 10 to 60 minutes to obtain a solution in which platinum nanoparticles having an average particle diameter of 2 to 5 nm were dispersed and grown. This solution was evaporated to dryness to obtain platinum nanoparticles having an average particle diameter of 2 to 5 nm.
この粒子１ｇとバインダー（ポリカーボネート樹脂）１ｇを均一に混合し、これを円形状（直径１ｃｍ）のプラスチック基板にディップコートして乾燥した。 1 g of the particles and 1 g of a binder (polycarbonate resin) were uniformly mixed, and this was dip coated on a circular plastic substrate (diameter 1 cm) and dried.
得られた基板を、プラスチック製のカード（８．５ｃｍ×５．４ｃｍ）の一部に貼り付けて本発明の偽造防止カードを製造した。具体的には、上記図１と同様のカードを製造した。 The obtained board | substrate was affixed on a part of plastic card | curd (8.5 cm x 5.4 cm), and the forgery prevention card | curd of this invention was manufactured. Specifically, a card similar to that shown in FIG. 1 was manufactured.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005063796A JP2006247871A (en) | 2005-03-08 | 2005-03-08 | Antifalsification card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005063796A JP2006247871A (en) | 2005-03-08 | 2005-03-08 | Antifalsification card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2006247871A true JP2006247871A (en) | 2006-09-21 |
Family
ID=37088865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005063796A Pending JP2006247871A (en) | 2005-03-08 | 2005-03-08 | Antifalsification card |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2006247871A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007034745A (en) * | 2005-07-27 | 2007-02-08 | Fuji Xerox Co Ltd | Information processing apparatus and information processing method |
| WO2008143087A1 (en) * | 2007-05-14 | 2008-11-27 | International Frontier Technology Laboratory, Inc. | Authenticity validation subject, authenticity validation chip reader, and authenticity judging method |
| WO2011123553A3 (en) * | 2010-04-02 | 2012-04-05 | Visa International Service Association | Crack embossing using diamond technology |
| JP2013502570A (en) * | 2009-08-18 | 2013-01-24 | インディアン インスティテュート オブ テクノロジー マドラス | Multi-element and multi-character tagging |
| US9903821B2 (en) | 2013-05-01 | 2018-02-27 | Indian Institute Of Technology Madras | Coated mesoflowers for molecular detection and smart barcode materials |
| JP2021189601A (en) * | 2020-05-27 | 2021-12-13 | 国立大学法人九州大学 | High security system, article, authenticity determination method, article discrimination method and information protection method |
| JP2024505030A (en) * | 2021-01-29 | 2024-02-02 | オプセック セキュリティ グループ インコーポレイテッド | Surface plasmon resonance creation method |
-
2005
- 2005-03-08 JP JP2005063796A patent/JP2006247871A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007034745A (en) * | 2005-07-27 | 2007-02-08 | Fuji Xerox Co Ltd | Information processing apparatus and information processing method |
| CN101743130B (en) * | 2007-05-14 | 2013-10-02 | 国际先端技术综合研究所株式会社 | Authenticity validation subject, authenticity validation chip reader, and authenticity judging method |
| WO2008143087A1 (en) * | 2007-05-14 | 2008-11-27 | International Frontier Technology Laboratory, Inc. | Authenticity validation subject, authenticity validation chip reader, and authenticity judging method |
| JPWO2008143087A1 (en) * | 2007-05-14 | 2010-08-05 | 国際先端技術総合研究所株式会社 | Authentication object, authentication chip reader and authentication method |
| US8408470B2 (en) | 2007-05-14 | 2013-04-02 | International Frontier Technology Laboratory, Inc. | Object for authentication verification, authentication verifying chip reading device and authentication judging method |
| US8659391B2 (en) | 2009-08-18 | 2014-02-25 | Indian Institute Of Technology Madras | Multielement and multiproperty tagging |
| JP2013502570A (en) * | 2009-08-18 | 2013-01-24 | インディアン インスティテュート オブ テクノロジー マドラス | Multi-element and multi-character tagging |
| US8434675B2 (en) | 2010-04-02 | 2013-05-07 | Visa International Service Association | Crack embossing using diamond technology |
| WO2011123553A3 (en) * | 2010-04-02 | 2012-04-05 | Visa International Service Association | Crack embossing using diamond technology |
| US9903821B2 (en) | 2013-05-01 | 2018-02-27 | Indian Institute Of Technology Madras | Coated mesoflowers for molecular detection and smart barcode materials |
| JP2021189601A (en) * | 2020-05-27 | 2021-12-13 | 国立大学法人九州大学 | High security system, article, authenticity determination method, article discrimination method and information protection method |
| JP2024505030A (en) * | 2021-01-29 | 2024-02-02 | オプセック セキュリティ グループ インコーポレイテッド | Surface plasmon resonance creation method |
| JP7665763B2 (en) | 2021-01-29 | 2025-04-21 | オプセック セキュリティ グループ インコーポレイテッド | Surface Plasmon Resonance Creation Method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101142598B (en) | Identification tag, object adapted to be identified, and related methods, devices and systems | |
| US7865722B2 (en) | Method of identifying an object and a tag carrying identification information | |
| TW200409006A (en) | Security device and system | |
| JPS6192896A (en) | Embossing foil | |
| WO2001022361A1 (en) | Information recorded medium, device for reading the information, information recorded medium transfer foil, and method for producing information recorded medium | |
| JP2006247871A (en) | Antifalsification card | |
| JP2001202491A (en) | IC card with enhanced anti-counterfeiting effect | |
| JP3139336B2 (en) | Optical reading card | |
| JP2015098150A (en) | Magnetic card | |
| JP2821367B2 (en) | Card-like object to be checked for authenticity and method of manufacturing the same | |
| JPH08300859A (en) | Information recording medium and hologram transfer foil | |
| KR101951795B1 (en) | Goldcoin that is coated on top and bottom and mirror-finished to prevent damage the unique identification pattern and to increase recognition rate | |
| JPH11272836A (en) | Information recording medium and information reading device therefor | |
| JPS639016A (en) | Magnetic recording medium and its production | |
| JP4080631B2 (en) | Magnetic recording medium and method for manufacturing the same | |
| JP4766301B2 (en) | A fluorescent pattern forming method on a recording material, an article on which a fluorescent pattern is formed using the method, and a transfer laminate. | |
| JP4012335B2 (en) | Magnetic recording medium and method for manufacturing the same | |
| CN117916080A (en) | Transfer foil, transfer article, display body, display body authenticity verification method and verification device, and individual authentication method | |
| US6753076B2 (en) | Forgery-preventive identification medium and method for ascertaining the genuineness thereof | |
| JPH07266764A (en) | Medium with security function | |
| JP2008062596A (en) | Information recording medium | |
| JP4095203B2 (en) | Magnetic recording medium and method for manufacturing the same | |
| EA044693B1 (en) | SECURITY MARKING, METHOD AND DEVICE FOR READING SECURITY MARKINGS, SECURITY DOCUMENT MARKED WITH SECURITY MARKINGS, AND METHOD AND SYSTEM FOR VERIFICATION OF SAID SECURITY DOCUMENT | |
| JP2000137914A (en) | Magnetic recording medium and method of manufacturing the same | |
| JPH0899484A (en) | Card and its authenticity determination method |