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JP4779217B2 - Anti-counterfeit paper and anti-counterfeit printed matter - Google Patents

Anti-counterfeit paper and anti-counterfeit printed matter Download PDF

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Publication number
JP4779217B2
JP4779217B2 JP2001058119A JP2001058119A JP4779217B2 JP 4779217 B2 JP4779217 B2 JP 4779217B2 JP 2001058119 A JP2001058119 A JP 2001058119A JP 2001058119 A JP2001058119 A JP 2001058119A JP 4779217 B2 JP4779217 B2 JP 4779217B2
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coating layer
paper
counterfeit
color
iris
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JP2002266289A (en
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徹 村上
慎一 赤堀
裕司 松田
宏介 秋山
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Tokushu Paper Manufacturing Co Ltd
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Tokushu Paper Manufacturing Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、偽造防止用紙及び偽造防止印刷物に関する。より詳しくは、カラー複写機によるコピーや、カラースキャナーとカラープリンターによるプリントを行っても原稿(本物)とは全く異なった色調の複写物やプリントしか得られない偽造防止用紙及び偽造防止印刷物に関する。
【0002】
【従来の技術】
最近の複写機やプリンターの精度向上は著しく、特に電子写真方式のカラー複写機やカラープリンターの普及は各種の有価証券類等の偽造を容易にしている。
これを防止するため種々の偽造防止手段が考えられているが、その一つに、現在のカラー複写機やカラープリンターでは光輝性を有するもの、例えば金属色を再現することが出来ないことを利用したものがある。
【0003】
例えば実開昭58−168754号に提案されているように、基紙上面に、金属色調顕著なアルミ箔などの光輝版を設け、且つ該光輝版表面に文字図柄を施してなる「複写機によるコピー不能用紙」の提案がある。これをコピーすると、用紙面に施された文字図柄は複写機の光線照射があると箔表面が黒ずんでコピーされるので読みとり不可能となる。
この用紙は複写そのものが不可能(複写物の読みとりが出来ない)という長所はあるが、光輝版の用紙に占める面積が大きいために金属色が強調されすぎて違和感があることが欠点である。また用紙の製造工程が複雑となり、必然的にコスト高になること等の別の問題点もある。
【0004】
これらの問題点を解決することを目的として本発明者等は、特開平6−313298号において、基紙表面に真珠顔料と接着剤を主体とした部分的な塗工層を形成したことを特徴とする偽造防止用紙の提案を行った。この提案の偽造防止用紙を使用して製造した偽造防止印刷物は、1)カラー複写機で複写を試みても、基紙の一部に設けられた真珠顔料層の光沢と色相は再現できないため、偽造したものであるか否かの判定が即座に可能となること、2)真珠顔料はおだやかな色なので、金属色調の光輝版を利用した偽造防止用紙と比較して違和感がないこと、3)印刷技術で用紙を製造できるので小ロット生産に対応できること、4)古紙から製紙用繊維の回収が容易に行えること、等の優れた効果を有している。
【0005】
【発明が解決しようとする課題】
一方、偽造防止用紙や偽造防止印刷物に対する偽造防止効果は益々高度なものが要求されるようになり、例えば前記特開平6−313298号に開示したような真珠顔料を含む塗工層を有する偽造防止用紙においても、より高度の偽造防止効果が要求されている。
【0006】
しかしながら、高度な偽造防止効果を備えた偽造防止用紙であっても、偽造防止手段が用紙に違和感を与えたり、用紙に所定事項の印刷を施して偽造防止印刷物とした場合に、所定事項の印刷に悪影響を及ぼしたりするものであってはならない。
【0007】
そこで本発明は、偽造防止手段として真珠顔料を含む塗工層を利用するとともに、さらに偽造防止効果を高めることができ、しかも用紙表面に違和感を与えたり、所定事項の印刷に悪影響を及ぼすことのない偽造防止用紙を提供すること、さらにはこの偽造防止用紙を用いた偽造防止印刷物を提供することを課題とする。
【0008】
【課題を解決するための手段】
すなわち本発明の偽造防止用紙は、図1中の参照番号を引用して説明すると、基紙Bの表面に虹彩色の真珠顔料と接着剤を主体とした塗工層1が形成され、この塗工層1とは重ならない別の箇所の基紙の表面に、塗工層1に使用した虹彩色の真珠顔料の色相とは異なる虹彩色の真珠顔料と接着剤を主体とした塗工層2が形成され、これら2つの虹彩色の真珠顔料の色相が互いに補色関係にあることを特徴とするものである。
【0009】
本発明で用いる真珠顔料は虹彩色を発するものであり、見る角度で色相が変化することが特徴である。すなわち、例えば乱反射光下では赤色に見える虹彩色真珠顔料は、正反射光下では、赤色に対して補色の関係にある青緑色の真珠光沢が視認できる。また、乱反射光下では青緑色に見える虹彩色真珠顔料の場合には、正反射光下では、その補色である赤色の真珠光沢が視認できる。ここで補色とは、光の場合、混ぜ合わせたときに無彩色となる2色の関係を言い、マンセルの色相環で互いに反対側同士にある色がこれに相当する。例えば赤色に対しては青緑色が、紫色に対しては黄緑色などがその例である。本発明においてはかような虹彩色を発する真珠顔料を用いることにより、偽造防止効果を高めることができる
【0010】
さらに本発明においては、塗工層1および塗工層2の虹彩色真珠顔料として、色相が互いに補色関係にある異色の2つの虹彩色真珠顔料を用いるのである。例えば、塗工層1の虹彩色真珠顔料として、乱反射光下では青緑色に見え、正反射光下では赤色に見えるものを用い、塗工層2の虹彩色真珠顔料として、乱反射光下では青緑色と補色の関係にある赤色に見え、正反射光下では青緑色に見えるものを用いる。かような塗工層1と塗工層2の組み合わせの場合には、乱反射光下では塗工層1の青緑色と塗工層2の赤色とにより色相のコントラストを際だたせる効果をもたらし、一方、正反射光下の観察時には塗工層1が赤色に見え、塗工層2が青緑色に見えるため、乱反射光下の観察時とは色相が逆転するという意外感をもたらし、意匠的な効果のみならず偽造防止効果も高めることができる。
【0011】
本発明の偽造防止用紙においては、製造上の観点からは、塗工層1および塗工層2は、基紙の流れ方向に連続的な筋状の塗工層として形成することが好ましい。
また本発明によれば、かような偽造防止用紙に所定事項を印刷した印刷層を形成することにより偽造防止印刷物を提供することができる。
【0012】
【発明の実施の形態】
本発明に用いる基紙は、針葉樹晒クラフトパルプ(NBKP),広葉樹晒クラフトパルプ(LBKP),針葉樹晒サルファイトパルプ(NBSP),サーモメカニカルパルプ(TMP)等の製紙用パルプを主体としこれに乾燥紙力増強剤、湿潤紙力増強剤、サイズ剤、定着剤、歩留り向上剤、濾水性向上剤、消泡剤、染料、着色顔料、蛍光剤などを適宜併用し、通常フリーネス550〜250mlC.S.F.で長網抄紙機や円網抄紙機等の公知の抄紙機を使用して抄紙する。
【0013】
本発明ではさらに、抄紙途上で紙面に澱粉、ポリビニルアルコール、各種表面サイズ等をサイズプレス装置等で塗工することも可能である。さらに必要に応じ、マシンカレンダー処理やスーパーカレンダー処理を施し、表面平滑性を向上させることも適宜行われる。
【0014】
また本発明に用いる基紙には、他の偽造防止手段を予め付与しておくこともできる。例えば、すき入れ、染色繊維や紫外線や赤外線で可視光を発する紫外蛍光発色繊維、赤外蛍光発色繊維、紫外蛍光発色粒子、赤外蛍光発色粒子などの混抄、スレッドの抄込み等の公知の偽造防止手段を基紙に付与しておくことができる。これにより偽造防止効果をより一層高めることができる。
【0015】
本発明に使用する虹彩色の真珠顔料としては、例えば雲母粉末の表面に酸化チタン等の金属酸化物の薄膜を形成したものが挙げられる。金属酸化物薄膜の厚みを一定の範囲に入るように正確に制御することにより、虹彩色を発現する真珠顔料が得られる。本発明では、真珠顔料メーカーが「虹彩色タイプの真珠顔料」として製造販売しているものをいずれも使用できる。
【0016】
本発明で使用する接着剤は、澱粉水溶液、アルカリカットしたカゼイン水溶液、スチレン−ブタジエン共重合ラテックス、メチルメタクリレート−ブタジエン共重合ラテックス、ポリ酢酸ビニルエマルジョン、ポリアクリル酸エステルエマルジョン等の単独若しくは混合物からなる水系の接着剤や、フェノール樹脂、アルキッド樹脂、石油樹脂、ビニル樹脂、ポリアミド樹脂、アクリル樹脂、ニトロセルロース、環化ゴム、塩化ゴム等の単独あるいは混合物を有機溶剤に溶解した接着剤等をいずれも使用できる。
【0017】
塗工層を形成するための塗工液中の虹彩色真珠顔料と接着剤の使用割合は、虹彩色真珠顔料の使用比率が高ければ高いほど虹彩色の真珠光沢感が高まるが表面強度が不足するので、乾燥重量換算で通常は虹彩色真珠顔料100部に対して接着剤50〜500部とする。この際、本発明の目的を阻害しない範囲で耐水化剤、硬化剤、着色剤、粘度調製剤、ブロッキング防止剤、防腐剤、防カビ剤等の副資材を塗工液中に適宜併用することもできる。
【0018】
このようにして製造した塗工液を基紙の表面に塗工して塗工層を形成する際の塗工厚み(乾燥換算)は、薄すぎると虹彩色の真珠光沢感が失われ、厚すぎると塗工部分がカールしたり用紙を積み重ねたときに部分的に盛り上がる等の弊害が起きやすいので、通常1〜15μm、好ましくは3〜10μmとする。
【0019】
図1は、基紙Bの表面に塗工層1と塗工層2を形成した本発明の偽造防止用紙の実施例を示している。この場合、塗工層1の虹彩色真珠顔料と塗工層2の虹彩色真珠顔料とは、色相が互いに補色関係にある異色のものを使用する。なお、塗工層1の虹彩色真珠顔料と塗工層2の虹彩色真珠顔料との間の補色関係は、厳密な補色関係でなくても、補色関係に近似した組み合わせ、例えば赤色に近い色相に対して緑色に近い色相といった実質的に補色関係といえる組み合わせも含むものとする。
【0020】
例えば図1の塗工層1には、乱反射光下で青緑色に見え、正反射光下で赤色に見える虹彩色真珠顔料を用い、塗工層2には、乱反射光下で青緑色と補色の関係にある赤色に見え、正反射光下で青緑色に見える虹彩色真珠顔料を用いた場合を考えると、乱反射光下では塗工層1の青緑色と塗工層2の赤色とにより色相のコントラストを際だたせる効果をもたらし、一方、正反射光下の観察時には塗工層1が赤色に見え、塗工層2が青緑色に見えるため、乱反射光下の観察時とは色相が逆転して見えることになる。
【0021】
基紙Bの表面に形成する塗工層としては、図1に示したように、基紙の流れ方向に対して連続的な筋状に形成することが、製造上の観点から効率的である。図1では、一定幅の直線状の筋として塗工層1と塗工層2を隣接させて形成しているが、例えば図2に示したように、塗工層1と塗工層2とを間隔を空けて平行に形成することもできる。また図3に示したように、塗工層1(あるいは塗工層2)を波形の筋状としてその中に例えばアルファベット文字のような文字や図柄の非塗工部分3を形成することもできる。
【0022】
筋状の塗工層1の形成方法は、格子型、斜線型、ピラミッド型、亀甲型等のセルを筋状に刻んだグラビアロールを用いてグラビア塗工する方法、ダイコーターを用いてストライプ形状の塗工層を形成する方法、印刷機を使用して筋状形状の塗工層を形成する方法等、任意の方法を採用できる。
【0023】
さらに塗工層の形状としては筋状とせずに任意の図柄として形成することもできる。例えば図4は、塗工層1および塗工層2をいずれも円形として基紙表面に分散して形成させた例を示している。塗工層の図柄としては、円以外にも、楕円、正方形、長方形、星形、六角形、ハート形、クローバー形、任意の文字など種々の形状が選択できる。
【0024】
本発明では、塗工層1または塗工層2のいずれか一方あるいは両方に紫外蛍光物質を添加することにより、偽造防止効果をより一層高めることができる。室内光や自然光のもとでは紫外蛍光物質の存在を視認できないが、ブラックライト等を使用して紫外線を用紙に照射すると塗工層1および/または塗工層2に含ませた紫外蛍光物質が特定の色に発色して見えるからである。
【0025】
紫外蛍光物質としては、従来公知の紫外蛍光染料や、無機若しくは有機の紫外蛍光顔料をいずれも使用できる。すなわち紫外蛍光発色染料としては、フルオレッセイン、クマリン系、オキサゾール系、ピラゾリン系、チアジアゾール系、スピロピラン系、ピレンスルホン酸系、ベンゾイミダゾール系、ジアミノスチルベン系等の周知の染料を使用できる。
【0026】
有機の紫外蛍光顔料としては、ポリ塩化ビニル樹脂、アルキッド樹脂、ポリメタクリル酸エステル樹脂、ユリア樹脂、メラミン樹脂等の樹脂にフルオレッセイン、エオシン、ローダミン6G、ローダミンB、ベーシックイエローHG等の染料を均一に溶解して粉砕したもの等を挙げることができる。
【0027】
また、無機の紫外蛍光顔料としては具体的には、銅、銀、マンガン等で活性化した硫化亜鉛;マンガン等で活性化したケイ酸亜鉛;銀、銅等で活性化した硫化亜鉛;カドミウム、ビスマス等で活性化した硫化カルシウム;サマリウム、セリウム等で活性化した硫化ストロンチウム;鉛等で活性化したタングステン酸カルシウム;ユーロピウム等で活性化したSr5 (PO4 3 Cl;マンガン等で活性化したZn2 GeO2 ;ユーロピウム等で活性化したY2 2 S;ユーロピウム等で活性化したY2 3 等を挙げることができる。また、必要に応じて、これらにアントラキノン系やアセトフェノン系等の増感剤を併用することもできる。
【0028】
また本発明では、塗工層1または塗工層2のいずれか一方あるいは両方に赤外蛍光物質を添加することにより、偽造防止効果をより一層高めることができる。室内光や自然光のもとでは赤外蛍光物質の存在を視認できないが、赤外発光ダイオードや赤外線レーザー等を使用して赤外線を用紙に照射すると塗工層1および/または塗工層2に含ませた赤外蛍光物質が特定の色に発色して見えるからである。
【0029】
赤外蛍光物質としては、有機または無機の赤外蛍光顔料のいずれも使用でき、Yb3+、Er3+、Ho3+を付活剤とする希土類蛍光体等が挙げられる。例えばYF3 :Yb+Erは赤外線の照射で緑や赤に発色し、YF3 :Yb+Tmは赤外線の照射で青に発色する。
【0030】
また本発明では、塗工層1または塗工層2のいずれか一方あるいは両方に赤外線吸収物質を添加することにより、偽造防止効果をより一層高めることができる。室内光や自然光のもとでは赤外線吸収物質の存在を視認できないが、赤外発光ダイオードや赤外レーザー等を使用して赤外線を用紙に照射すると塗工層に含まれる赤外線吸収物質の作用で塗工層1および/または塗工層2が黒く見えるからである。
【0031】
赤外線吸収物質としては、ジイモニウム系、アミニウム系、キノン系、アントラキノン系、ポリメチン系、シアニン系、フタロシアニン系、トリフェニルアミン系、トリアゾール系等の周知の赤外線を選択的に吸収する色素等をいずれも使用できる。
【0032】
さらに本発明では、塗工層1または塗工層2のいずれか一方あるいは両方に紫外線吸収物質を添加することにより、偽造防止効果をより一層高めることができる。室内光や自然光のもとでは紫外線吸収物質の存在を視認できないが、ブラックライト等を使用して紫外線を用紙に照射すると塗工層に含まれる紫外線吸収物質の作用で塗工層1および/または塗工層2が黒く見えるからである。
紫外線吸収物質としては、サリチル酸系、ベンゾフェノン系、ベンゾトリアゾール系などの周知の紫外線を選択的に吸収する物質をいずれも使用できる。
【0033】
本発明によれば、上述した偽造防止用紙に所定事項の印刷を施すことにより偽造防止印刷物を製造することができる。図5はその一例で、窓開きスレッド入り紙を使用して本発明の偽造防止用紙を製造し、その表面に所定の印刷を施して商品券を製造した例である。すなわち、間欠的に紙層を薄くして形成した窓開き部10で、紙層内に埋設されたスレッド11が露出している窓開きスレッド入り紙に、図1に示したような塗工層1と塗工層2を形成したものである。かような偽造防止印刷物によれば、用紙にスレッド11を埋設するという偽造防止手段と、虹彩色真珠顔料による塗工層1と塗工層2の形成という本発明による偽造防止手段とが二重に施されていることになり、偽造防止効果をより一層付与することができる。
【0034】
【実施例】
以下に実施例を挙げて本発明を具体的に説明する。実施例で用いた基紙および塗工液の調製例は以下の通りである。
【0035】
[基紙の製造]
NBKP20重量部,LBKP80重量部を350mlC.S.F.に叩解し、これに白土10重量部、紙力増強剤(商品名「ポリストロン191」、荒川化学工業(株)製)0.3重量部、サイズ剤(商品名「サイズパインE」、荒川化学工業(株)製)1.0重量部、硫酸バンドを適量加え紙料を調製し、長網抄紙機を使用して常法により坪量100g/m2 の基紙を抄造した。
【0036】
[塗工液Aの調製]
乱反射光下で赤色に近い虹彩色、正反射光下では緑色の虹彩色に見える真珠顔料(商品名「イリオジン235」、メルク・ジャパン(株)販売)100乾燥重量部、接着剤(「ポリビニルアルコール」、(株)クラレ製造)100乾燥重量部よりなる水系の塗料を調製した。
【0037】
[塗工液Bの調製]
乱反射光下で緑色に近い虹彩色、正反射光下では赤色の虹彩色に見える真珠顔料(商品名「イリオジン215」、メルク・ジャパン(株)販売)100乾燥重量部、接着剤(「ポリビニルアルコール」、(株)クラレ製造)100乾燥重量部よりなる水系の塗料を調製した。
【0038】
[塗工液Cの調製]
乱反射光下で緑色に近い虹彩色、正反射光下では赤色の虹彩色に見える真珠顔料(商品名「イリオジン215」)100乾燥重量部、接着剤(「ポリエステル樹脂」、東洋紡(株)製造)150乾燥重量部、シアニン系赤外線吸収物質(商品名「カヤソルブIR750」、日本化薬(株)製造)よりなる有機溶剤系の塗料を調製した。
【0039】
[実施例1]
前記塗工液Aを使用して、グラビアコーターで幅8mmの直線状の筋を前記基紙に塗工し、厚み5μmの筋状の塗工層1を形成した。
次いで塗工液Bを使用して、グラビアコーターで幅8mmの直線状の筋からなる厚み5μmの塗工層2を上記筋状の塗工層1に隣接して塗工し偽造防止用紙を製造した。
得られた偽造防止用紙の塗工層1および塗工層2は図1に示したようになり、乱反射光下では塗工層1(塗工液A)が赤色に近い虹彩色、塗工層2(塗工液B)が緑色に近い虹彩色として視認され、一方、正反射光下では塗工層1(塗工液A)が緑色の虹彩色、塗工層2(塗工液B)が赤色の虹彩色となり色相が逆転して視認された。
【0040】
次いで、この偽造防止用紙に、所定事項をオフセット印刷機を使用してカラー印刷した。得られた偽造防止印刷物を電子写真方式のカラー複写機(商品名「ピクセル」、キャノン(株)製造)で複写したところ、塗工層1(塗工液A)の部分は薄い緑色に、塗工層2(塗工液B)の部分は薄い赤色に複写されたが、虹彩色の真珠光沢は全く複写されず、原稿(本物)と複写物の差は明確に認められた。
【0041】
[実施例2]
前記塗工液Aを使用して、グラビア印刷機で直径10mm、厚み5μmの円形の図柄からなる塗工層1を分散させて前記基紙に印刷した。
次いで塗工液Cを使用して、グラビア印刷機で直径10mm、厚み5μmの円形の図柄からなる塗工層2を塗工層1と重ならないように分散させて前記塗工紙に印刷して偽造防止用紙を製造した。
得られた偽造防止用紙の塗工層1および塗工層2は図4に示したようになり、乱反射光下では塗工層1(塗工液A)の円が赤色に近い虹彩色、塗工層2(塗工液C)の円が緑色に近い虹彩色として視認され、一方、正反射光下では塗工層1(塗工液A)の円が緑色の虹彩色、塗工層2(塗工液C)の円が赤色の虹彩色となり色相が逆転して視認された。
【0042】
次いで、この偽造防止用紙に、所定事項をオフセット印刷機を使用してカラー印刷した。得られた偽造防止印刷物をカラースキャナー(商品名「GT−9000」、エプソン(株)製造)で読込み、カラーインクジェットプリンター(商品名「キャノンBJ−F870」、キャノン(株)製造)で出力したところ、塗工層1(塗工液A)の円は薄い緑色に、塗工層2(塗工液C)の円は薄い赤色にプリントされたが、虹彩色の真珠光沢は全くプリントされず、原稿(本物)とプリントの差は明確に認められた。
【0043】
また、この偽造防止印刷物に波長880nmの赤外線を照射し、赤外線も感知できるCCDビデオカメラで撮影して画像をCRTに出力したところ、塗工層2(塗工液C)の円は黒く写っており、本物とは明確に区別できた。
【0044】
【発明の効果】
以上説明したところからわかるように、本発明の偽造防止用紙及び偽造防止印刷物は下記に述べる顕著な効果を有する。
【0045】
1)カラー複写機で複写したり、カラースキャナーでスキャンしてカラープリンターで出力することで偽造を試みても、用紙に形成された真珠顔料を含む塗工層の真珠光沢と色相は再現できないため、偽造されたものであるか否かの判定が即座に可能となる。
【0046】
2)真珠顔料はおだやかな色なので、金属色調の光輝版を利用した偽造防止用紙と比較して違和感がない。
【0047】
3)印刷技術で用紙に塗工層を形成できるので小ロットの製造にに対応できる。
【0048】
4)古紙から製紙用繊維の回収が容易に行える。
【0049】
5)2つの塗工層に、色相が互いに補色関係にある2種類の虹彩色の真珠顔料を用いるため、正反射光下の観察時には乱反射光下の観察時とは色相が逆転して見え、意匠的な効果のみならず偽造防止効果も高めることができる。
【0050】
6)塗工層に紫外蛍光物質、赤外蛍光物質、紫外線吸収物質または赤外線吸収物質を添加することにより、偽造防止効果をより一層高めた偽造防止用紙や偽造防止印刷物を提供することができる。
【0051】
7)このような特性を生かし、本発明の偽造防止用紙は、小切手用紙、株券用紙、債券用紙、紙幣用紙、商品券用紙、パスポート用紙、各種チケット用紙、乗車券、投票用紙などに好適に使用できる。
【図面の簡単な説明】
【図1】 基紙の表面に筋状の塗工層1と筋状の塗工層2を隣接させて形成した本発明の偽造防止用紙の実施例を示す平面図である。
【図2】 基紙の表面に筋状の塗工層1と筋状の塗工層2を間隔を空けて形成した本発明の偽造防止用紙の実施例を示す平面図である。
【図3】 塗工層の形状の一例を示す説明図である。
【図4】 基紙の表面に円形の塗工層1と円形の塗工層2を分散させて形成した本発明の偽造防止用紙の実施例を示す平面図である。
【図5】本発明の偽造防止印刷物の一例を示す平面図である。
【符号の説明】
1:虹彩色真珠顔料と接着剤を主体とした塗工層
2:塗工層1とは異なる色相の虹彩色真珠顔料と接着剤を主体とした塗工層
B:基紙
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to anti-counterfeit paper and anti-counterfeit printed matter. More specifically, the present invention relates to an anti-counterfeit paper and an anti-counterfeit printed matter in which only a copied or printed matter having a color tone completely different from that of a manuscript (genuine) can be obtained even when copying by a color copying machine or printing by a color scanner and a color printer.
[0002]
[Prior art]
Recent improvements in the accuracy of copiers and printers are remarkable, and the spread of electrophotographic color copiers and color printers in particular facilitates the forgery of various securities.
Various anti-counterfeiting measures have been considered to prevent this, and one of them is that the current color copiers and color printers have glitter, for example, the inability to reproduce metallic colors There is what I did.
[0003]
For example, as proposed in Japanese Utility Model Publication No. 58-168754, a bright plate such as an aluminum foil having a remarkable metallic color tone is provided on the upper surface of the base paper, and a character design is applied to the surface of the bright plate. There is a proposal of "non-copyable paper". When this is copied, the character design applied to the paper surface cannot be read because the surface of the foil is darkened when the copying machine is irradiated with light rays.
Although this paper has the advantage that copying itself is impossible (the copy cannot be read), the disadvantage is that the metallic color is over-emphasized due to the large area occupied by the glittering plate, making it uncomfortable. In addition, there are other problems such as a complicated manufacturing process of paper and an inevitably high cost.
[0004]
In order to solve these problems, the present inventors have disclosed in JP-A-6-313298 that a partial coating layer mainly composed of a pearl pigment and an adhesive is formed on the surface of a base paper. Proposed anti-counterfeit paper. The anti-counterfeit printed matter produced using the proposed anti-counterfeit paper 1) Even if copying is attempted with a color copier, the gloss and hue of the pearl pigment layer provided on a part of the base paper cannot be reproduced. It is possible to immediately determine whether it has been forged or not. 2) Since the pearl pigment is a gentle color, there is no sense of incongruity compared to anti-counterfeit paper using a metallic-colored glitter plate. 3) Since the paper can be produced by printing technology, it can be used for small-lot production, and 4) it has excellent effects such as easy collection of papermaking fibers from used paper.
[0005]
[Problems to be solved by the invention]
On the other hand, an anti-counterfeiting effect on anti-counterfeit paper and anti-counterfeit printed matter is increasingly required. For example, anti-counterfeiting having a coating layer containing a pearl pigment as disclosed in JP-A-6-313298. Also for paper, a higher level of forgery prevention effect is required.
[0006]
However, even if it is anti-counterfeit paper with a high anti-counterfeit effect, if the anti-counterfeiting means gives the paper a sense of incongruity, or if the pre-printed matter is printed on the paper to make an anti-counterfeit print, It must not adversely affect
[0007]
Therefore, the present invention uses a coating layer containing a pearl pigment as a forgery prevention means, can further enhance the forgery prevention effect, and gives a sense of incongruity to the paper surface or adversely affects printing of predetermined items. It is an object of the present invention to provide an anti-counterfeit paper that is not forgery, and to provide an anti-counterfeit printed matter using the anti-counterfeit paper.
[0008]
[Means for Solving the Problems]
That is, the anti-counterfeit paper of the present invention will be described with reference to the reference numerals in FIG. 1. A coating layer 1 mainly composed of an iris pearl pigment and an adhesive is formed on the surface of the base paper B. On the surface of the base paper at a different location that does not overlap with the construction layer 1, a coating layer 2 mainly composed of an iris pearl pigment and an adhesive that is different from the hue of the iris pearl pigment used in the coating layer 1. And the hues of these two iris-colored pearl pigments are complementary to each other.
[0009]
The pearl pigment used in the present invention emits an iris color and is characterized in that the hue changes depending on the viewing angle. That is, for example, an iridescent pearl pigment that appears red under irregularly reflected light can be visually recognized as bluish green pearl luster that has a complementary color relationship with red under regular reflected light. Further, in the case of an iris pearl pigment that looks bluish green under irregularly reflected light, the red pearl luster that is its complementary color is visible under regular reflected light. Here, in the case of light, complementary color refers to the relationship between two colors that become achromatic when mixed, and corresponds to the colors on the opposite sides of the Munsell hue ring. Examples are blue-green for red and yellow-green for purple. In the present invention, the anti-counterfeiting effect can be enhanced by using a pearl pigment that emits such an iris color.
Furthermore, in the present invention, two different colored pearl pigments having hues complementary to each other are used as the iris pearl pigments of the coating layer 1 and the coating layer 2. For example, an iris colored pearl pigment of the coating layer 1 that looks blue-green under irregular reflection light and red under regular reflection light is used, and an iris colored pearl pigment of the coating layer 2 is blue under irregular reflection light. A red color that is complementary to the green color and appears blue-green under regular reflection light is used. In the case of such a combination of the coating layer 1 and the coating layer 2, under diffuse reflection light, the effect of conspicuous the hue contrast by the blue-green color of the coating layer 1 and the red color of the coating layer 2 is brought about. Since the coating layer 1 looks red and the coating layer 2 looks blue-green when observed under specularly reflected light, it brings a surprising feeling that the hue is reversed from that when observed under irregularly reflected light. In addition, the forgery prevention effect can be enhanced.
[0011]
In the anti-counterfeit paper of the present invention, from the viewpoint of production, the coating layer 1 and the coating layer 2 are preferably formed as a streaky coating layer continuous in the flow direction of the base paper.
Further, according to the present invention, it is possible to provide an anti-counterfeit printed matter by forming a print layer in which predetermined items are printed on such anti-counterfeit paper.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The base paper used in the present invention is mainly made of papermaking pulp such as softwood bleached kraft pulp (NBKP), hardwood bleached kraft pulp (LBKP), softwood bleached sulfite pulp (NBSP), and thermomechanical pulp (TMP). A paper strength enhancer, a wet paper strength enhancer, a sizing agent, a fixing agent, a yield improver, a drainage improver, an antifoaming agent, a dye, a color pigment, a fluorescent agent, etc. are used in combination as appropriate. S. F. The paper is made using a known paper machine such as a long paper machine or a circular paper machine.
[0013]
In the present invention, it is also possible to coat starch, polyvinyl alcohol, various surface sizes and the like on the paper surface in the course of paper making with a size press device or the like. Further, if necessary, a machine calendar process or a super calendar process is performed to improve the surface smoothness as appropriate.
[0014]
In addition, other forgery prevention means can be given to the base paper used in the present invention in advance. For example, known counterfeiting such as filling, dyeing fibers, ultraviolet fluorescent coloring fibers that emit visible light in the ultraviolet or infrared, infrared fluorescent coloring fibers, ultraviolet fluorescent coloring particles, infrared fluorescent coloring particles, and thread incorporation. Prevention means can be applied to the base paper. Thereby, the forgery prevention effect can be further enhanced.
[0015]
Examples of the iridescent pearl pigment used in the present invention include those in which a metal oxide thin film such as titanium oxide is formed on the surface of mica powder. By accurately controlling the thickness of the metal oxide thin film so as to fall within a certain range, a pearl pigment exhibiting an iris color can be obtained. In the present invention, any of those manufactured and sold as “iris type pearl pigments” by pearl pigment manufacturers can be used.
[0016]
The adhesive used in the present invention consists of an aqueous starch solution, an alkali-cut casein aqueous solution, a styrene-butadiene copolymer latex, a methyl methacrylate-butadiene copolymer latex, a polyvinyl acetate emulsion, a polyacrylate emulsion, or the like. Water-based adhesives, phenolic resins, alkyd resins, petroleum resins, vinyl resins, polyamide resins, acrylic resins, nitrocellulose, cyclized rubber, chlorinated rubber, etc. Can be used.
[0017]
The ratio of the iris pearl pigment and the adhesive used in the coating liquid to form the coating layer is higher, but the higher the use ratio of the iris pearl pigment, the higher the pearl luster of the iris color, but the surface strength is insufficient. Therefore, the amount of the adhesive is usually 50 to 500 parts with respect to 100 parts of the iris pearl pigment in terms of dry weight. At this time, auxiliary materials such as water-proofing agents, curing agents, colorants, viscosity modifiers, antiblocking agents, antiseptics, and antifungal agents are appropriately used in the coating liquid as long as the object of the present invention is not impaired. You can also.
[0018]
The coating thickness (dry conversion) when coating the coating liquid produced in this way on the surface of the base paper to form a coating layer is too thin. If it is too large, the coating portion curls or a problem such as partial rise when the sheets are stacked is liable to occur. Therefore, the thickness is usually 1 to 15 μm, preferably 3 to 10 μm.
[0019]
FIG. 1 shows an example of an anti-counterfeit paper according to the present invention in which a coating layer 1 and a coating layer 2 are formed on the surface of a base paper B. In this case, the colored pearl pigment of the coating layer 1 and the colored pearl pigment of the coating layer 2 are different colors having hues complementary to each other. The complementary color relationship between the iris pearl pigment of the coating layer 1 and the iris pearl pigment of the coating layer 2 is not a strict complementary color relationship, but a combination that approximates the complementary color relationship, for example, a hue close to red In contrast, a combination that can be said to be a substantially complementary color relationship such as a hue close to green is also included.
[0020]
For example, the coating layer 1 of FIG. 1 uses an iridescent pearl pigment that looks blue-green under irregular reflection light and red under regular reflection light, and the coating layer 2 has a complementary color with blue green under irregular reflection light. Considering the use of an iridescent pearl pigment that looks red and has a blue-green color under regular reflection light, the hue of the coating layer 1 is bluish green and the red color of the coating layer 2 under irregular reflection light. On the other hand, since the coating layer 1 looks red and the coating layer 2 looks blue-green when observed under specular reflection light, the hue is reversed from the observation under irregular reflection light. Will be seen.
[0021]
As the coating layer formed on the surface of the base paper B, as shown in FIG. 1, it is efficient from the viewpoint of manufacturing to form a continuous streak in the flow direction of the base paper. . In FIG. 1, the coating layer 1 and the coating layer 2 are formed adjacent to each other as straight stripes having a constant width. For example, as shown in FIG. 2, the coating layer 1 and the coating layer 2 Can also be formed in parallel at intervals. Moreover, as shown in FIG. 3, the coating layer 1 (or coating layer 2) is made into a wavy streak, and a non-coating portion 3 of characters or designs such as alphabet letters can be formed therein. .
[0022]
The method of forming the streaky coating layer 1 is a method of gravure coating using a gravure roll in which cells of lattice type, diagonal line type, pyramid type, turtle shell type, etc. are streaked, and stripe shape using a die coater. Arbitrary methods, such as a method of forming a coating layer, a method of forming a streaky-shaped coating layer using a printer, can be employed.
[0023]
Furthermore, the shape of the coating layer can be formed as an arbitrary pattern without being a streak. For example, FIG. 4 shows an example in which the coating layer 1 and the coating layer 2 are both formed in a circular shape on the base paper surface. As a pattern of the coating layer, various shapes such as an ellipse, a square, a rectangle, a star, a hexagon, a heart shape, a clover shape, and an arbitrary character can be selected in addition to a circle.
[0024]
In the present invention, the anti-counterfeiting effect can be further enhanced by adding an ultraviolet fluorescent material to one or both of the coating layer 1 and the coating layer 2. The presence of the ultraviolet fluorescent substance cannot be visually recognized under room light or natural light, but when the ultraviolet ray is irradiated onto the paper using a black light or the like, the ultraviolet fluorescent substance contained in the coating layer 1 and / or the coating layer 2 is This is because the color appears to be a specific color.
[0025]
As the ultraviolet fluorescent substance, conventionally known ultraviolet fluorescent dyes and inorganic or organic ultraviolet fluorescent pigments can be used. That is, as the ultraviolet fluorescent coloring dye, well-known dyes such as fluorescein, coumarin, oxazole, pyrazoline, thiadiazole, spiropyran, pyrenesulfonic acid, benzimidazole, diaminostilbene can be used.
[0026]
As organic ultraviolet fluorescent pigments, dyes such as fluorescein, eosin, rhodamine 6G, rhodamine B, basic yellow HG and the like are added to resins such as polyvinyl chloride resin, alkyd resin, polymethacrylate resin, urea resin, and melamine resin. Examples include those that are uniformly dissolved and pulverized.
[0027]
Specific examples of the inorganic ultraviolet fluorescent pigment include zinc sulfide activated with copper, silver, manganese, etc .; zinc silicate activated with manganese, etc .; zinc sulfide activated with silver, copper, etc .; cadmium, Calcium sulfide activated with bismuth, etc .; strontium sulfide activated with samarium, cerium, etc .; calcium tungstate activated with lead, etc .; Sr 5 (PO 4 ) 3 Cl activated with europium, etc .; activated with manganese, etc. Zn 2 GeO 2 ; Y 2 O 2 S activated with europium or the like; Y 2 O 3 activated with europium or the like. Further, if necessary, an anthraquinone-based or acetophenone-based sensitizer can be used in combination.
[0028]
In the present invention, the anti-counterfeiting effect can be further enhanced by adding an infrared fluorescent material to one or both of the coating layer 1 and the coating layer 2. The presence of an infrared fluorescent substance cannot be visually recognized under room light or natural light, but if infrared rays are irradiated onto the paper using an infrared light emitting diode or an infrared laser, it is included in the coating layer 1 and / or coating layer 2. This is because the infrared fluorescent material appears to develop a specific color.
[0029]
As the infrared fluorescent material, either an organic or inorganic infrared fluorescent pigment can be used, and examples thereof include rare earth phosphors using Yb 3+ , Er 3+ , and Ho 3+ as an activator. For example, YF 3 : Yb + Er develops green and red when irradiated with infrared rays, and YF 3 : Yb + Tm develops blue when irradiated with infrared rays.
[0030]
In the present invention, the anti-counterfeiting effect can be further enhanced by adding an infrared absorbing material to one or both of the coating layer 1 and the coating layer 2. The presence of infrared absorbing materials cannot be visually recognized under room light or natural light. However, when infrared rays are irradiated onto paper using infrared light emitting diodes or infrared lasers, it is coated by the action of infrared absorbing materials contained in the coating layer. This is because the work layer 1 and / or the coating layer 2 appear black.
[0031]
Examples of infrared absorbing substances include dyes that selectively absorb known infrared rays such as diimonium, aminium, quinone, anthraquinone, polymethine, cyanine, phthalocyanine, triphenylamine, and triazole. Can be used.
[0032]
Furthermore, in the present invention, the anti-counterfeiting effect can be further enhanced by adding an ultraviolet absorbing material to one or both of the coating layer 1 and the coating layer 2. The presence of the ultraviolet absorbing material cannot be visually recognized under room light or natural light, but when the ultraviolet ray is irradiated onto the paper using a black light or the like, the coating layer 1 and / or the ultraviolet absorbing material contained in the coating layer is used. This is because the coating layer 2 looks black.
As the ultraviolet absorbing material, any known material that selectively absorbs ultraviolet rays such as salicylic acid, benzophenone, and benzotriazole can be used.
[0033]
According to the present invention, a forgery-preventing printed matter can be manufactured by printing predetermined items on the forgery-preventing paper. FIG. 5 shows an example in which an anti-counterfeit paper according to the present invention is manufactured using window-open threaded paper, and a gift certificate is manufactured by performing predetermined printing on the surface thereof. That is, in the window opening portion 10 formed by intermittently thinning the paper layer, the coating layer as shown in FIG. 1 is applied to the paper with the window opening thread in which the thread 11 embedded in the paper layer is exposed. 1 and the coating layer 2 are formed. According to such an anti-counterfeit printed matter, the anti-counterfeiting means of embedding the thread 11 in the paper and the anti-counterfeiting means according to the present invention of forming the coating layer 1 and the coating layer 2 with the iris pearl pigment are doubled. The anti-counterfeiting effect can be further imparted.
[0034]
【Example】
The present invention will be specifically described below with reference to examples. Preparation examples of the base paper and the coating liquid used in the examples are as follows.
[0035]
[Manufacture of base paper]
NBKP 20 parts by weight, LBKP 80 parts by weight 350 ml C.I. S. F. This was beaten into 10 parts by weight of white clay, 0.3 parts by weight of paper strength enhancer (trade name “Polystron 191”, manufactured by Arakawa Chemical Co., Ltd.), sizing agent (trade name “Size Pine E”, Arakawa) A paper stock was prepared by adding an appropriate amount of 1.0 part by weight and a sulfuric acid band (Chemical Industry Co., Ltd.), and a base paper having a basis weight of 100 g / m 2 was made by a conventional method using a long net paper machine.
[0036]
[Preparation of coating liquid A]
Pearl pigment that looks like a red iris under diffuse reflection and a green iris under regular reflection (trade name “Iriodin 235”, sold by Merck Japan Ltd.) 100 parts by dry weight, adhesive (“polyvinyl alcohol” ”, Kuraray Co., Ltd.) A water-based paint consisting of 100 dry parts by weight was prepared.
[0037]
[Preparation of coating liquid B]
Pearl pigment (trade name “Iriodin 215”, sold by Merck Japan Ltd.) that looks like a green iris color under diffuse reflection light and a red iris color under regular reflection light, adhesive (“polyvinyl alcohol” ”, Kuraray Co., Ltd.) A water-based paint consisting of 100 dry parts by weight was prepared.
[0038]
[Preparation of coating liquid C]
Pearl pigment (trade name “Iriodin 215”) 100 parts by dry weight, adhesive (“Polyester resin”, manufactured by Toyobo Co., Ltd.) that looks like an iris color close to green under irregular reflection light and a red iris color under regular reflection light An organic solvent-based paint comprising 150 dry parts by weight, a cyanine infrared absorbing material (trade name “Kayasolve IR750” manufactured by Nippon Kayaku Co., Ltd.) was prepared.
[0039]
[Example 1]
Using the coating liquid A, a linear stripe having a width of 8 mm was applied to the base paper with a gravure coater to form a stripe-shaped coating layer 1 having a thickness of 5 μm.
Next, using the coating liquid B, a 5 μm-thick coating layer 2 composed of linear stripes having a width of 8 mm is applied adjacent to the above-mentioned stripe-like coating layer 1 with a gravure coater to produce a forgery-preventing paper. did.
The coating layer 1 and the coating layer 2 of the obtained anti-counterfeit paper are as shown in FIG. 1, and the coating layer 1 (coating liquid A) is an iris color and coating layer close to red under irregular reflection light. 2 (coating liquid B) is visually recognized as an iris color close to green, while under specular reflection, coating layer 1 (coating liquid A) is a green iris color and coating layer 2 (coating liquid B). Became a red iris color, and the hue was reversed.
[0040]
Next, predetermined items were color-printed on the forgery-preventing paper using an offset printer. When the obtained anti-counterfeit printed matter was copied with an electrophotographic color copying machine (trade name “Pixel” manufactured by Canon Inc.), the coating layer 1 (coating liquid A) was coated in a light green color. The part of the construction layer 2 (coating liquid B) was copied in a light red color, but the pearl luster of the iris color was not copied at all, and the difference between the original (genuine) and the copied material was clearly recognized.
[0041]
[Example 2]
Using the coating liquid A, a coating layer 1 made of a circular pattern having a diameter of 10 mm and a thickness of 5 μm was dispersed with a gravure printing machine and printed on the base paper.
Next, using the coating liquid C, the coating layer 2 made of a circular pattern having a diameter of 10 mm and a thickness of 5 μm is dispersed on the gravure printing machine so as not to overlap the coating layer 1 and printed on the coated paper. Made anti-counterfeit paper.
The coating layer 1 and the coating layer 2 of the obtained anti-counterfeit paper are as shown in FIG. 4. Under irregular reflection light, the circle of the coating layer 1 (coating liquid A) is an iris color and coating color close to red. The circle of the working layer 2 (the coating liquid C) is visually recognized as an iris color close to green, while the circle of the coating layer 1 (the coating liquid A) is a green iris color and the coating layer 2 under regular reflection light. The circle of (Coating liquid C) became a red iris color and the hue was reversed and was visually recognized.
[0042]
Next, predetermined items were color-printed on the forgery-preventing paper using an offset printer. When the obtained anti-counterfeit printed matter is read with a color scanner (trade name “GT-9000”, manufactured by Epson Corporation), and output with a color inkjet printer (trade name “Canon BJ-F870”, manufactured by Canon Inc.) The circle of the coating layer 1 (coating liquid A) was printed in light green, and the circle of the coating layer 2 (coating liquid C) was printed in light red, but the iris pearl luster was not printed at all, The difference between the manuscript (genuine) and the print was clearly recognized.
[0043]
Moreover, when this forgery-preventing printed matter was irradiated with infrared light having a wavelength of 880 nm, photographed with a CCD video camera capable of sensing infrared light, and the image was output to a CRT, the circle of the coating layer 2 (coating liquid C) appeared black. It was clearly distinguishable from the real one.
[0044]
【The invention's effect】
As can be seen from the above description, the anti-counterfeit paper and the anti-counterfeit printed matter of the present invention have the following remarkable effects.
[0045]
1) The pearl luster and hue of the coating layer containing pearl pigments formed on the paper cannot be reproduced even if copying is attempted with a color copier or scanned with a color scanner and output with a color printer. It is possible to immediately determine whether or not the forgery has been made.
[0046]
2) Since the pearl pigment is a gentle color, there is no sense of incongruity compared with the anti-counterfeit paper using the metallic color glitter plate.
[0047]
3) Since the coating layer can be formed on the paper by printing technology, it can be used for the production of small lots.
[0048]
4) The papermaking fibers can be easily recovered from the used paper.
[0049]
5) Since two kinds of iris pearl pigments whose hues are complementary to each other are used in the two coating layers, the hues appear to be reversed from those observed under irregularly reflected light when observed under specular reflection light. Not only the design effect but also the forgery prevention effect can be enhanced.
[0050]
6) By adding an ultraviolet fluorescent material, an infrared fluorescent material, an ultraviolet absorbing material, or an infrared absorbing material to the coating layer, it is possible to provide a forgery-preventing paper or a forgery-preventing printed matter that has a further improved anti-counterfeit effect.
[0051]
7) Taking advantage of these characteristics, the anti-counterfeit paper of the present invention is suitably used for check paper, stock certificate paper, bond paper, banknote paper, gift certificate paper, passport paper, various ticket papers, boarding tickets, voting paper, etc. it can.
[Brief description of the drawings]
FIG. 1 is a plan view showing an example of an anti-counterfeit sheet according to the present invention in which a streaky coating layer 1 and a streaky coating layer 2 are formed adjacent to each other on the surface of a base paper.
FIG. 2 is a plan view showing an example of an anti-counterfeit paper according to the present invention in which a streaky coating layer 1 and a streaky coating layer 2 are formed on the surface of a base paper with a space therebetween.
FIG. 3 is an explanatory diagram showing an example of the shape of a coating layer.
FIG. 4 is a plan view showing an example of an anti-counterfeit paper according to the present invention formed by dispersing a circular coating layer 1 and a circular coating layer 2 on the surface of a base paper.
FIG. 5 is a plan view showing an example of a forgery-preventing printed material according to the present invention.
[Explanation of symbols]
1: Coating layer mainly composed of iris colored pearl pigment and adhesive 2: Coating layer mainly composed of iris colored pearl pigment and adhesive having a hue different from coating layer B: Base paper

Claims (7)

基紙(B)の表面に虹彩色の真珠顔料と接着剤を主体とした塗工層(1)が形成され、この塗工層(1)とは重ならない別の箇所の基紙の表面に、塗工層(1)に使用した虹彩色の真珠顔料の色相とは異なる虹彩色の真珠顔料と接着剤を主体とした塗工層(2)が形成され、これら2つの虹彩色の真珠顔料の色相が互いに補色関係にあることを特徴とする偽造防止用紙。On the surface of the base paper (B), a coating layer (1) mainly composed of an iridescent pearl pigment and an adhesive is formed, and on the surface of the base paper at another location not overlapping this coating layer (1). A coating layer (2) mainly composed of an iris pearl pigment and an adhesive different from the hue of the iris pearl pigment used in the coating layer (1) is formed, and these two iris pearl pigments are formed. Anti-counterfeit paper characterized in that the hues of each other are complementary to each other. 塗工層(1)および塗工層(2)が、基紙の流れ方向に連続的な筋状の塗工層として形成されていることを特徴とする請求項1記載の偽造防止用紙。The anti-counterfeit paper according to claim 1, wherein the coating layer (1) and the coating layer (2) are formed as a streaky coating layer continuous in the flow direction of the base paper. 塗工層(1)および/または塗工層(2)に紫外蛍光物質を添加してあることを特徴とする請求項1または2記載の偽造防止用紙。The anti-counterfeit paper according to claim 1 or 2, wherein an ultraviolet fluorescent material is added to the coating layer (1) and / or the coating layer (2). 塗工層(1)および/または塗工層(2)に赤外蛍光物質を添加してあることを特徴とする請求項1または2記載の偽造防止用紙。The anti-counterfeit paper according to claim 1 or 2, wherein an infrared fluorescent material is added to the coating layer (1) and / or the coating layer (2). 塗工層(1)および/または塗工層(2)に赤外線吸収物質を添加してあることを特徴とする請求項1または2記載の偽造防止用紙。The anti-counterfeit paper according to claim 1 or 2, wherein an infrared absorbing substance is added to the coating layer (1) and / or the coating layer (2). 塗工層(1)および/または塗工層(2)に紫外線吸収物質を添加してあることを特徴とする請求項1または2記載の偽造防止用紙。The anti-counterfeit paper according to claim 1 or 2, wherein an ultraviolet absorbing material is added to the coating layer (1) and / or the coating layer (2). 請求項1乃至6のいずれか1項に記載の偽造防止用紙に所定事項を印刷した印刷層を形成してあることを特徴とする偽造防止印刷物。A forgery-preventing printed matter, wherein a printed layer is formed by printing predetermined items on the forgery-preventing paper according to any one of claims 1 to 6.
JP2001058119A 2001-03-02 2001-03-02 Anti-counterfeit paper and anti-counterfeit printed matter Expired - Lifetime JP4779217B2 (en)

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GB2434332A (en) * 2006-01-24 2007-07-25 Sun Chemical Ltd Coldset web offset printing
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JP5168187B2 (en) * 2009-02-27 2013-03-21 大日本印刷株式会社 Color variable medium
JP5168188B2 (en) * 2009-02-27 2013-03-21 大日本印刷株式会社 True / false judgment with color variable function
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AU758396B2 (en) * 1998-10-07 2003-03-20 Dynic Corporation Forgery prevention sheet
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