JP4395586B2

JP4395586B2 - Anti-counterfeit printed matter

Info

Publication number: JP4395586B2
Application number: JP2003202457A
Authority: JP
Inventors: 隆生横手; 一男伊藤
Original assignee: 独立行政法人国立印刷局
Priority date: 2003-07-28
Filing date: 2003-07-28
Publication date: 2010-01-13
Anticipated expiration: 2023-07-28
Also published as: WO2005009753A1; JP2005041084A

Description

【０００１】
【発明の属する技術分野】
本発明は、銀行券、株券、パスポート、有価証券、通行券、カード、商品タグ等の偽造、変造を防止する必要性のある印刷物に適用される偽造防止印刷物に関するものである。
【０００２】
【従来の技術】
従来、銀行券、株券、パスポート、有価証券、通行券、カード、商品タグ等の偽造、変造を防止する必要性のある印刷物において、印刷物に対して垂直方向から傾けて観察することにより潜像画像の出現又は色彩の変化をさせて真偽判別を行う技術は公知であり、凹版印刷物の画線構成を利用して潜像画像を出現させるもの、光学的変化インキを利用して色彩を変化させるもの等が挙げられる。また、基材に対して垂直方向から徐々に水平方向に観察すると画像が連続的に変化する代表的な技術としてホログラムが挙げられる。
【０００３】
前記凹版印刷物の画線構成を利用し、潜像画像を出現させるもの、例えば、凹版印刷された万線に潜像画像となる画線部を高い画線で構成し、その他の凹版印刷画線の画線部を潜像画像となる画線部より低い画線で構成している。このことにより、印刷物の角度を変えて観察すると潜像画像が発現するものが開示されている。更に、画線の幅が均一で向きが異なることにより潜像画像を発現させるものがある（例えば、特許文献１参照）。
【０００４】
【特許文献１】
特公昭５６−１９２７３号公報（第１頁、第１−１５図）
【０００５】
特定パターンをパール光沢インキを用いて印刷した多色印刷物であって、見る角度によって色が変わる干渉光を示す特定パターンを示し、更に、カラーコピー機による複写により前記パール光沢インキの色が目視でも識別可能な異なる色に再現されることを特徴とする印刷物が開示されている（例えば、特許文献２参照）。
【０００６】
【特許文献２】
特開平９−２４０１３３号公報（第１−３頁、第１図）
【０００７】
しかしながら、特公昭５６−１９２７３号公報は凹版画線で構成した潜像を有する画像の下地に印刷絵柄を設けて印刷物を作成した場合に、前記印刷物を斜めから観察した場合に、潜像画像が確認しにくくなる問題があった。また、偽造防止技術としては乏しく改良の余地があった。また、特開平９−２４０１３３号公報のように特定パターンをパール光沢インキで印刷しただけでは、偽造防止技術としては乏しく容易に複製される恐れがあり改良の余地があった。また、ある特定画像の色彩又は明暗が徐々に変化することがなかった。また、基材に対して垂直方向から徐々に水平方向に観察すると画像が連続的に変化する代表的な技術としてホログラムが挙げられるが、ホログラムは高価であり、少量生産には不向きであった。
【０００８】
【発明が解決しようとする課題】
本発明は、このような従来の問題を解決することを目的としたもので、本発明は、特定画像を分割して各分割された領域を盛り上がりのある万線画線で構成し、更に各分割された領域を形成する万線画線の配列方向を徐々に異ならせ、光沢インキを用いて印刷することによって、基材に対して垂直方向から徐々に水平方向に観察すると特定画像の色彩又は明暗が連続的に変化する偽造防止印刷物を見出した。
【０００９】
本発明は、基材の一部に特定画像を設け、前記特定画像は、ｎ（ｎは３以上の整数）個の領域に分割して形成し、ｎ個の領域は、第１の領域、第２の領域、第３の領域、・・・第ｎ−１の領域及び第ｎの領域に区分けされ、第１の領域の少なくとも一部が隣接するように第２の領域が形成され、第２の領域の少なくとも一部が隣接するように第３の領域が形成され、第ｎ−１の領域の少なくとも一部が隣接するように第ｎの領域が形成され、ｎ個の領域は光沢インキからなる盛り上がりのある万線画線で構成され、万線画線の配列方向は第１の領域、第２の領域、第３の領域、・・・第ｎ−１の領域及び第ｎの領域ごとに異なる方向に配列され、万線画線の配列方向は、第１の領域の万線画線の配列方向の角度をα１、第２の領域の万線画線の配列方向の角度をα２、第３の領域の万線画線の配列方向の角度をα３、・・・第ｎ−１の領域の万線画線の配列方向の角度をαｎ−１、第ｎの領域の万線画線の配列方向の角度をαｎとした場合に、α１＜α２＜α３＜・・・＜αｎ−１＜αｎ又はα１＞α２＞α３＞・・・＞αｎ−１＞αｎの条件を満たすことによって、印刷物に対して垂直方向から徐々に水平方向に観察すると、第１の領域から第ｎの領域又は第ｎの領域から第１の領域に向かうに従い色彩又は明暗が徐々に変化するため、特定画像に躍動感を有して視認できる。よって、本発明は真偽判別、複写防止に優れる偽造防止印刷物を提案することを目的とする。
【００１０】
【課題を解決するための手段】
本発明は、基材の一部に特定画像を設け、前記特定画像は、第１の領域、第２の領域及び第３の領域に分割して形成し、前記第１の領域の少なくとも一部が隣接するように前記第２の領域が形成され、前記第２の領域の少なくとも一部が隣接するように前記第３の領域が形成され、前記第１の領域、前記第２の領域及び前記第３の領域は光沢インキからなる盛り上がりのある万線画線で構成され、前記万線画線の配列方向は前記第１の領域、前記第２の領域及び前記第３の領域ごとに異なる方向に配列され、前記万線画線の配列方向は、前記第１の領域の万線画線の配列方向の角度をα１、前記第２の領域の万線画線の配列方向の角度をα２、前記第３の領域の万線画線の配列方向の角度をα３とした場合に、α１＜α２＜α３又はα１＞α２＞α３の条件を満たすことを特徴とする偽造防止印刷物であって、前記偽造防止印刷物に対して垂直方向から徐々に水平方向に観察すると、第１の領域から第３の領域又は第３の領域から第１の領域に向かうに従い色彩又は明暗が徐々に変化するため、特定画像に躍動感を有して視認できる。
【００１１】
また、本発明は、隣接する状態が、前記第１の領域の周囲を囲むように前記第２の領域が形成され、前記第２の領域の周囲を囲むように前記第３の領域が形成されたことを特徴とする偽造防止印刷物である。
【００１２】
また、本発明は、基材の一部に特定画像を設け、前記特定画像は、ｎ（ｎは３以上の整数）個の領域に分割して形成し、前記ｎ個の領域は、第１の領域、第２の領域、第３の領域、・・・第ｎ−１の領域及び第ｎの領域に区分けされ、前記第１の領域の少なくとも一部が隣接するように前記第２の領域が形成され、前記第２の領域の少なくとも一部が隣接するように前記第３の領域が形成され、・・・前記第ｎ−１の領域の少なくとも一部が隣接するように前記第ｎの領域が形成され、前記ｎ個の領域は光沢インキからなる盛り上がりのある万線画線で構成され、前記万線画線の配列方向は前記第１の領域、前記第２の領域、前記第３の領域、・・・前記第ｎ−１の領域及び前記第ｎの領域ごとに異なる方向に配列され、前記万線画線の配列方向は、前記第１の領域の万線画線の配列方向の角度をα１、前記第２の領域の万線画線の配列方向の角度をα２、前記第３の領域の万線画線の配列方向の角度をα３、・・・前記第ｎ−１の領域の万線画線の配列方向の角度をαｎ−１、前記第ｎの領域の万線画線の配列方向の角度をαｎとした場合に、α１＜α２＜α３＜・・・＜αｎ−１＜αｎ又はα１＞α２＞α３＞・・・＞αｎ−１＞αｎの条件を満たすことを特徴とする偽造防止印刷物であって、前記偽造防止印刷物に対して垂直方向から徐々に水平方向に観察すると、第１の領域から第ｎの領域又は第ｎの領域から第１の領域に向かうに従い色彩又は明暗が徐々に変化するため、特定画像に躍動感を有して視認できる。
【００１３】
また、本発明は、前記隣接する状態が、前記第１の領域の周囲を囲むように前記第２の領域が形成され、前記第２の領域の周囲を囲むように前記第３の領域が形成され、・・・前記第ｎ−１の領域の周囲を囲むように前記第ｎの領域が形成されたことを特徴とする偽造防止印刷物である。
【００１４】
また、本発明は、前記領域において、前記各領域の外郭形状が、円形、楕円、多角形又はロゴマークであることを特徴とする偽造防止印刷物である。
【００１５】
また、本発明は、前記領域において、前記各領域の外郭形状が、円形、楕円、多角形又はロゴマークであることを特徴とする偽造防止印刷物である。
【００１６】
また、本発明は、前記万線画線のピッチ幅が、６０μｍから２０００μｍの範囲で、万線画線の画線幅が、３０μｍから１０００μｍの範囲であることを特徴とする偽造防止印刷物である。
【００１７】
また、本発明は、前記盛り上がりのある万線画線の高さが、５μｍから１５０μｍの範囲であることを特徴とする偽造防止印刷物である。
【００１８】
また、本発明は、前記光沢インキが、光学的変化顔料を含有したことを特徴とする偽造防止印刷物である。
【００１９】
また、本発明は、前記光学的変化顔料が平面配向性を向上させるために撥水、撥油性を持たせる表面処理を施していることを特徴とする偽造防止印刷物である。
【００２０】
また、本発明は、前記特定画像が、光吸収層を設けた領域上に重ねて印刷されたことを特徴とする偽造防止印刷物である。また、光反射性の低い領域が赤外線吸収材料又は磁性材料を含有したインキで印刷することを特徴とする偽造防止印刷物である。
【００２１】
また、本発明は、前記光学的変化顔料が、パール顔料、金属粉顔料、ガラスフレーク又はコレステリック液晶顔料であることを特徴とする偽造防止印刷物である。
【００２２】
また、本発明は、前記光沢インキが、ＵＶ硬化型インキ又は電子線硬化型インキであることを特徴とする偽造防止印刷物である。
【００２３】
【発明の実施の形態】
次に図面を参照して本発明に係る偽造防止印刷物の実施形態について説明する。本実施の形態に限定されるものではなく、本発明の係る特許請求の範囲に記載した技術事項の範囲内であれば、各種の態様を採用することができる。
【００２４】
基材１上に第１の領域２、第２の領域３、及び第３の領域４からなる特定画像Ｃを図１に示す。特定画像Ｃは光沢インキで印刷している。第１の領域２、第２の領域３、及び第３の領域４のそれぞれの領域内は、万線画線で形成され、第１の領域２を形成する万線画線２ａの配列方向、第２の領域３を形成する万線画線３ａの配列方向、第３の領域４を形成する万線画線４ａの配列方向は、徐々に異ならせる必要がある。例えば、第１の領域２を形成する万線画線２ａの配列方向を０度とした場合、第２の領域３を形成する万線画線３ａの配列方向は４５度、第３の領域４を形成する万線画線４ａの配列方向は９０°にする必要がある。図１では、万線画線２ａから万線画線４ａの配列方向を左回りに形成しているが、万線画線２ａから万線画線４ａの配列方向を右回りに形成しても良い。また、万線画線２ａ、万線画線３ａ、万線画線４ａの配列方向を０°、４５°、９０°としているが本発明はこれに限定されることなく、万線画線２ａの角度＜万線画線３ａの角度＜万線画線４ａの角度、又は、万線画線４ａの角度＜万線画線３ａの角度＜万線画線２ａの角度の条件を満足すればよい。更に、万線画線２ａ、万線画線３ａ、万線画線４ａは盛り上がりのある微細な画線から構成される。図１では、特定画像Ｃを第１の領域２、第２の領域３、及び第３の領域４の３領域に分割して形成しているが、本発明の領域の個数は、３個以上であれば特に限定されることなく、ｎ（ｎは３以上の整数）個の領域に分割して特定画像Ｃを形成することができる。好ましくはｎ個の領域のｎは３以上、１００以下の整数である。また、図１での外郭形状Ｐは円で形成されているが本発明は円形状に限定されることなく、楕円、多角形又はロゴマーク等の任意の形状を選択できる。また、外郭形状Ｐは画線で形成してもよく、各領域（２、３、４）内のみを万線画線で形成し、外郭形状Ｐは画線を形成しなくともよい。図２は、図１におけるＡ−Ｂ断面図である。図２に示すように万線画線２ａ、万線画線３ａ、万線画線４ａの画線は盛り上がりＷを有していることがわかる。
【００２５】
図３は、図１の印刷物を垂直方向から観察した場合の図を示す。印刷物を垂直方向から観察した場合に、第１の領域２、第２の領域３、及び第３の領域４は微細な万線画線２ａ、万線画線３ａ、万線画線４ａで構成されているため識別しにくく、同時に、第１の領域２、第２の領域３、及び第３の領域４は光沢インキで印刷されており、拡散光のため光の影響を受けにくく確認しづらいため、第１の領域２、第２の領域３、及び第３の領域４は区分けし難い状態で視認され、ベタに近い領域と認識される。
【００２６】
本発明の印刷物を垂直方向から観察すると、ベタな印刷物のように認識されるためには、第１の領域２、第２の領域３、及び第３の領域４の万線画線の各画線のピッチ幅が、６０μｍから２０００μｍの範囲で、万線画線の各画線幅が、３０μｍから１０００μｍの範囲があることが好ましく、更に好ましくは万線画線の各画線のピッチ幅が、１２０μｍから４００μｍの範囲で、万線画線の各画線幅が、６０μｍから８００μｍの範囲があることが好ましい。画線幅が３０μｍより小さいと作成上困難となり、１０００μｍより大きいと本発明の効果が得られ難くなる。また、それぞれの万線画線の各画線幅と各非画線幅の割合は１：１が好ましい。
【００２７】
本発明の印刷物を、垂直方向から徐々に水平方向に徐々に傾けて観察した場合、第１の領域２、第２の領域３、及び第３の領域４を構成する万線画線２ａ、万線画線３ａ、万線画線４ａの配列方向が異なるため、それぞれの領域（２、３、４）を形成する万線画線（２ａ、３ａ、４ａ）における正反射光量及び拡散光量に差が生じる。図４に示すように特定の観察角度においては、第３の領域４の反射光量が第１の領域２及び第２の領域３の反射光量を上回るため第３の領域４が顕在化し、更に、深い観察角度においては図５に示すように第２の領域３の反射光量が第１の領域２及び第３の領域４の反射光量を上回るために第２の領域３が顕在化し、観察角度を更に深くすると図６に示すように第１の領域２の反射光量が第２の領域３及び第３の領域４の反射光量を上回るため第１の領域２が顕在化する。このように垂直方向から徐々に水平方向に観察すると、各領域の万線画線の配列方向が異なっているため各領域を形成する万線画線の反射光量に差が生じ、第３の領域から第１の領域に向かうに従い色彩又は明暗が徐々に変化するため、特定画像に躍動感を有して視認できる。図面では、第３の領域から第１の領域に向かうに従い色彩又は明暗が徐々に変化しているが、観察の仕方によっては第１の領域から第３の領域に向かうに従い色彩又は明暗が徐々に変化して視認される。更に、印刷物を傾けなくとも、スポット光等の入射光の角度を連続的に変化させることによって本発明の効果を奏することができる。また、本発明の印刷物は、複写機、画像入力装置等の複写防止効果を有する。これは、光沢インキで印刷されていること、及び、万線画線の配列方向と複写機等の走査線との関係によって複写防止効果が生じる。
【００２８】
本発明の原理を図７を使用して説明すると、光沢インキを使用した盛り上がりのある画線を有する印刷物に、例えばＤの方向から光を照射すると、ｄの部分からの光の反射量に対しｅ、ｆの部分の光の反射量が少ないため、明度差が生じることによりｄの部分が顕在化し、光の照射角度を変化させるとｆの部分からの光の反射量がｄの部分の光の反射量を上回りｆの部分が顕在化する。このように、鏡面のある光沢インキを使用して盛り上がりのある画線を作製し、その画線の角度を変化させることで視認できるタイミングを変化させることができるようになる。本発明の盛り上がりのある万線画線の高さが、５μｍから１５０μｍの範囲であれば、図４乃至図６の効果が向上するため、万線画線の高さを５μｍから１５０μｍの範囲に設定することが好ましい。
【００２９】
以上のことをまとめると、本発明は、基材の一部に特定画像を設け、前記特定画像は、第１の領域、第２の領域及び第３の領域に分割して形成し、第１の領域の少なくとも一部が隣接するように第２の領域が形成され、第２の領域の少なくとも一部が隣接するように第３の領域が形成され、第１の領域、第２の領域及び第３の領域は光沢インキからなる盛り上がりのある万線画線で構成され、万線画線の配列方向は第１の領域、第２の領域及び第３の領域ごとに異なる方向に配列され、前記万線画線の配列方向は、前記第１の領域の万線画線の配列方向の角度をα１、前記第２の領域の万線画線の配列方向の角度をα２、前記第３の領域の万線画線の配列方向の角度をα３とした場合に、α１＜α２＜α３又はα１＞α２＞α３の条件を満たすことを特徴とする偽造防止印刷物であって、偽造防止印刷物に対して垂直方向から徐々に水平方向に観察すると、第１の領域から第３の領域又は第３の領域から第１の領域に向かうに従い色彩又は明暗が徐々に変化するため、特定画像に躍動感を有して視認できる。更に、印刷物は、光沢インキで領域ごとに配列方向の異なる万線画線を形成しているため、よって、ある領域の万線画線の配列方向と複写機等の走査線との違いが生じ、複写機等で複写した場合に本発明の印刷物とは異なる複写物となるため複写防止効果が得られる。
【００３０】
また、本発明は、基材の一部に特定画像を設け、前記特定画像は、ｎ（ｎは３以上の整数）個の領域に分割して形成し、ｎ個の領域は、第１の領域、第２の領域、第３の領域、・・・第ｎ−１の領域及び第ｎの領域に区分けされ、第１の領域の少なくとも一部が隣接するように第２の領域が形成され、第２の領域の少なくとも一部が隣接するように第３の領域が形成され、第ｎ−１の領域の少なくとも一部が隣接するように第ｎの領域が形成され、ｎ個の領域は光沢インキからなる盛り上がりのある万線画線で構成され、万線画線の配列方向は第１の領域、第２の領域、第３の領域、・・・第ｎ−１の領域及び第ｎの領域ごとに異なる方向に配列され、万線画線の配列方向は、第１の領域の万線画線の配列方向の角度をα１、第２の領域の万線画線の配列方向の角度をα２、第３の領域の万線画線の配列方向の角度をα３、・・・第ｎ−１の領域の万線画線の配列方向の角度をαｎ−１、第ｎの領域の万線画線の配列方向の角度をαｎとした場合に、α１＜α２＜α３＜・・・＜αｎ−１＜αｎ又はα１＞α２＞α３＞・・・＞αｎ−１＞αｎの条件を満たすことによって、印刷物に対して垂直方向から徐々に水平方向に観察すると、第１の領域から第ｎの領域又は第ｎの領域から第１の領域に向かうに従い色彩又は明暗が連続的に徐々に変化するため、特定画像に躍動感を有して視認できる。更に、印刷物は、光沢インキで領域ごとに配列方向の異なる万線画線を形成しているため、よって、ある領域の万線画線の配列方向と複写機等の走査線との違いが生じ、複写機等で複写した場合に本発明の印刷物とは異なる複写物となるため複写防止効果が得られる。
【００３１】
更に、第１の領域の周囲を囲むように第２の領域が形成され、第２の領域の周囲を囲むように第３の領域が形成され、・・・第ｎ−１の領域の周囲を囲むように第ｎの領域が形成することによって図４乃至図６の効果が向上する。この場合、各領域の位置関係は隣接する状態であればよい。
【００３２】
図１に示した本発明の特定画像は、光沢インキで印刷する必要がある。ここで言う、光沢インキは表面に鏡面光沢があればよく、画線自体に盛り上がりがあれば透明、半透明のインキでも良い。本発明の図４乃至６の効果を向上させるためには光沢インキに光学的変化顔料を含有する必要があり、パール顔料、鱗片状顔料、金属粉顔料、ガラスフレーク又はコレステリック液晶顔料等をインキに配合する必要がある。本発明はパール顔料を配合したインキが最も本発明の効果を奏することができる。
【００３２】
更に、上記記載の光学的変化顔料は平面配向性を有することが好ましい。図８に平面配向性を有することのない顔料を含有したインキで印刷したインキ皮膜の拡大図を示し、図９に平面配向性を有する光学的変化顔料を含有したインキで印刷したインキ皮膜の拡大図を示す。平面配向性を有することのない顔料を含有したインキで印刷した場合は、画線のインキ皮膜中の顔料の配向状態は、図８に示すようにインキ皮膜中の全体にランダムに配向していることがわかる。平面配向性を有する光学的変化顔料を含有したインキで印刷した場合は、画線のインキ皮膜中の顔料の配向状態は、図９に示すようにインキ皮膜中の表面にきれいに配向していることがわかる。ここでの平面配向性（リーフィング効果）とは撥水、撥油性処理を行った顔料のことであり、顔料に撥水、撥油性を持たせているため、顔料がインキ皮膜の下部に沈降しにくいためインキ皮膜中の表面にきれいに配向する。しかしながら、撥水、撥油性処理を行っていない顔料、つまり、平面配向性を有することのない顔料は、顔料が配向する前にインキが乾燥するため顔料がインキ皮膜中の表面にきれいに配向しないため、撥水、撥油性を持たせた顔料に比べ本発明の効果が劣ることになる。
【００３３】
次に、光学的変化顔料を含有したインキの効果について説明する。光学的変化顔料はパール顔料、鱗片状顔料、金属粉顔料、ガラスフレーク顔料又はコレステリック液晶顔料等が挙げられる。しかしながら、光学的変化顔料の屈折率、形状、厚さ、大きさ、インキ皮膜中の粒子分布等によって干渉光が異なることとなる。図１０に光学的変化顔料を含有したインキで印刷した印刷物を斜めから観察した場合の図を示す。図１０に示すように入射光Ｘからの光がインキ皮膜上で反射され、反射された反射光Ｙの光は、光学的変化顔料の影響を受け、光学的変化顔料の垂直方向から観察した場合と異なった光の色が生じて干渉光となり視認される。
【００３４】
ここで使用されるパール顔料は虹彩色パール顔料でも２色性パール顔料でもその他の鱗片状顔料でも構わない。また、パール顔料の粒子径の大きさは１μｍ〜１５０μｍのものを用い、好ましくは５μｍ〜５０μｍで、平均粒径が１０μｍ〜２５μｍ程度が好ましい。
【００３５】
本発明の偽造防止印刷物に対して垂直方向から徐々に水平方向に観察すると色彩又は明暗が連続的に徐々に変化するため、特定画像に躍動感を有して視認できる。
【００３６】
本発明の偽造防止印刷物に対して垂直方向から徐々に水平方向に観察すると、色彩又は明暗が連続的に徐々に変化するためには、盛り上がりのある画線にする必要があり、画線の高さが、５μｍから１５０μｍの範囲であることが好ましい。インキの盛りが５μｍ未満であると、本発明の効果が確認しにくい状況となり、１５０μｍを超えると作製上困難となる。
【００３７】
本発明の万線画線の形状は、直万線パターン、曲万線パターン等で形成することができ、特に限定されるものではない。更に、万線画線の各画線は、実線を用いることが好ましいが、点線、破線等を用いても良い。更に、実線、破線、点線等を微小文字によって形成しても良い。また、万線画線の各画線の画線幅を段階的又は連続的に変化させることで、本発明の偽造防止印刷物に対して垂直方向から徐々に水平方向に観察すると、色彩又は明暗が明瞭に徐々に変化し、特定画像が階調表現を有して視認できる。
【００３６】
本発明の各領域の外郭形状Ｐは図１１に示すように円形、多角形又はロゴマーク等のどのような形でも構わない。図１２に示すように本発明の複数の領域は、特定画像の外郭と特定画像内の任意の点とを垂直方向に複数個を分割し、複数個に分割したそれぞれの点が複数の領域のそれぞれの境界域の基準となり、それぞれの境界域の形状は、特定画像の外郭形状と、同一又は近似した形状によって、複数の領域を形成することで形成される。図１２は、任意の点を特定画像内の外郭２０の中心２１ａに設けた場合の図であり、垂直方向に２個分割２２し、領域を３個設けた場合の図である。更に、図１３は、任意の点を特定画像内の外郭２０の中心からずらした点２１ｂに設けた場合の図であり、垂直方向に２個分割２２し、領域を３個設けた場合の図である。図１２及び図１３は第１の領域の周囲を囲むように第２の領域が形成され、第２の領域の周囲を囲むように第３の領域が形成されている。本発明はこれに限定されることなく図１４のように第１の領域２の少なくとも一部が隣接するように第２の領域３が形成され、第２の領域３の少なくとも一部が隣接するように第３の領域４が形成され、第３の領域４の少なくとも一部が隣接するように第４の領域５を形成しても良い。ここで言う、隣接とは領域の少なくとも一部が接していること、又は領域の少なくとも一部が重なり合って接していることを言う。
【００３７】
本発明は、上記図１１乃至図１３の形状に限定されることなく図１７に示すような形状にしてもよい。その他の例を図１７に示す。第１の領域から第ｎの領域に向かって、外郭形状が徐々に変化している例として、図１７（ａ）では四角から徐々に三角に変化した状態を示している。また、各図形領域の万線画線の配列角度が異なっている。図１７（ｂ）は花びらによって形成されたもので各花びら領域の万線画線の配列角度が異なっている。
【００３８】
本発明の画線の配列方向の角度は、隣り合う領域の画線の成す角度が１度以上１７９度以下であればよいが、好ましくは５度以上４５度以下の範囲であることが望ましい。
【００３９】
本発明の特定画像は、酸化重合型インキ、ＵＶ硬化型インキ、電子線硬化型インキ、紫外線硬化及び酸化重合機能を併せ持つインキ（特許２１１３８８０号参照）、又は２液混合型インキが好ましい。印刷方式は特に限定されることはないが、凹版印刷方式又はスクリーン印刷方式が好ましい。
【００４０】
ここで使用されるパール顔料は虹彩色パール顔料でも２色性パール顔料でもその他の鱗片状顔料でも構わない。ただし、盛り上がっている画線の表面で顔料が配向するように顔料の表面処理（例として特開２００１−１０６９３７号公報参照に示されるような撥水、撥油性処理）を行った物を使用することで鱗片状顔料の配向性（リーフィング効果）を向上させることができ、図９に示すように印刷物表面で顔料が配向して本発明の効果を向上することができる。この場合、盛り上がりのある画線は速硬化性を有する必要があるため、ＵＶ硬化型インキ、電子線硬化型インキ、紫外線硬化及び酸化重合機能を併せ持つインキ（特許２１１３８８０号参照）、又は２液混合型インキに上記記載のような表面処理（撥水、撥油性処理）を行った顔料を配合させたインキにより印刷し、印刷後に紫外線照射装置等の活性エネルギー線を照射する必要がある。よって盛り上がりのある画線を用いても顔料が沈降せず、図９に示すように印刷物表面で顔料が配向して本発明の効果を向上することができる。撥水、撥油性処理を施していない場合は鱗片状顔料が配向する前にインキが硬化するために、パール効果が発生しないか、あるいはパール効果が発生したとしても撥水、撥油性処理を施した顔料と比較して効果が劣るものとなる。
【００４１】
また、本発明は、特定画像が、光吸収層を設けた領域上に重ねて印刷することによって、図４乃至図６の効果が向上する。ここで言う、光吸収層とは光反射率の低い、つまり、濃度の高い印刷の色彩又は基材の色彩によって形成され、最も黒色系が効果がある。また、光吸収層を設けた領域が赤外線吸収材料又は磁性材料を含有したインキで印刷することによって偽造防止効果が向上する。特定画像の下塗りする印刷方式は、特に限定されるものではないが、オフセット印刷技法が好ましい。特定画像の印刷方式は、特に限定されるものではないが、凹版印刷技法、スクリーン印刷技法を用いることが好ましい。特定画像の印刷に用いるインキ粘度は、５ポイズ〜２００ポイズ程度で、印刷後、乾燥までの間に、表面に平面配向性を有する光学的変化顔料、表面に配向された光学的変化顔料の下部に平面配向性を有することのない顔料に分離できる程度の粘度が好ましい。また、印刷機の調整においては特別な調整は不要であり、一般的な設定で印刷することが可能である。
【００４２】
本発明の基材は紙葉類、プラスチックフィルム、金属、布等を用いることができる。
【実施例】
以下、実施例を用いて本発明を更に詳細に説明するが、本発明の内容は、これらの実施例の範囲に限定されるものではない。
【００４３】
（実施例１）
図１５に示すように第１の領域２、第２の領域３、及び第３の領域４から構成される特定画像Ｃを作成し、各領域は、ピッチ幅２００μｍ、画線幅１００μｍの万線画線から構成し、第１の領域２の万線画線の配列方向の角度を０度としたときに、第２の領域２の万線画線を４５度、第３の領域２の万線画線を９０度とし、特定画像Ｃを得た。各領域は特定画像の外郭の中心から順に形成した。各領域の外郭形状は正方形の形状で形成した。
【００４４】
得られた特定画像Ｃをもとに、スクリーン版面を作製し、下記の配合割合でインキを作製した。

得られたスクリーン版面、スクリーンインキを用い、スクリーン印刷機で印刷を行い実施例１の印刷物を得た。
【００４５】
実施例１の印刷物を垂直方向から観察すると、特定画像は全体的に一様なベタに近い印刷領域として認識され、第１の領域２、第２の領域３、及び第３の領域４は肉眼で区分けしにくい状態にある。実施例１の印刷物を浅い角度で斜めから観察した場合、第３の領域４の反射光量が第１の領域２及び第２の領域３の反射光量を上回り第３の領域４が顕在化し、更に、深い観察角度においては第２の領域３の反射光量が第１の領域２及び第３の領域４の反射光量を上回り第２の領域３が顕在化し、観察角度を更に深くすると第１の領域２の反射光量が第２の領域３及び第３の領域４の反射光量を上回り第１の領域２が顕在化できた。つまり、第３の領域から第１の領域に向かうに従い色彩又は明暗が徐々に変化するため、特定画像が動画のような躍動感を有して視認できた。
【００４６】
（実施例２）
図１６に示すように第１の領域２、第２の領域３、及び第３の領域４から構成される特定画像Ｃを作成し、各領域は、ピッチ幅２００μｍ、画線幅１００μｍの万線画線から構成し、第１の領域２の万線画線の配列方向の角度を０度としたときに、第２の領域３の万線画線を４５度、第３の領域４の万線画線を９０度とし、特定画像Ｃを得た。各領域は特定画像の外郭の中心からずらして形成した。各領域の外郭形状は円の形状で形成した。
【００４７】
得られた基本画像Ｃをもとに、スクリーン版面を作製し、下記の配合割合でインキを作製した。

得られたスクリーン版面、スクリーンインキを用い、スクリーン印刷機で印刷を行い実施例２の印刷物を得た。
【００４８】
実施例２の印刷物は、実施例１の印刷物よりも効果が劣るが近い効果の印刷物が作製できた。
【００４９】
以上、本実施例に基づいて説明したが、本発明はこれに限定されるものでなく、特許請求の範囲記載における技術的思想の範囲内であれば、その他のいろいろな実施形態が考えられる。
【００５０】
【発明の効果】
本発明は、基材の一部に特定画像を設け、前記特定画像は、ｎ（ｎは３以上の整数）個の領域に分割して形成し、ｎ個の領域は、第１の領域、第２の領域、第３の領域、・・・第ｎ−１の領域及びｎの領域に区分けされ、第１の領域の少なくとも一部が隣接するように第２の領域が形成され、第２の領域の少なくとも一部が隣接するように第３の領域が形成され、第ｎ−１の領域の少なくとも一部が隣接するように第ｎの領域が形成され、ｎ個の領域は光沢インキからなる盛り上がりのある万線画線で構成され、万線画線の配列方向は第１の領域、第２の領域、第３の領域、・・・第ｎ−１の領域及び第ｎの領域ごとに異なる方向に配列され、前記万線画線の配列方向は、前記第１の領域の万線画線の配列方向の角度をα１、前記第２の領域の万線画線の配列方向の角度をα２、前記第３の領域の万線画線の配列方向の角度をα３、・・・前記第ｎ−１の領域の万線画線の配列方向の角度をαｎ−１、前記第ｎの領域の万線画線の配列方向の角度をαｎとした場合に、α１＜α２＜α３＜・・・＜αｎ−１＜αｎ又はα１＞α２＞α３＞・・・＞αｎ−１＞αｎの条件をみたすことによって、印刷物に対して垂直方向から徐々に水平方向に観察すると、第１の領域から第ｎの領域又は第ｎの領域から第１の領域に向かうに従い色彩又は明暗が徐々に変化するため、特定画像に躍動感を有して視認できる。つまり、特定画像が動的効果を有するため視覚的効果が非常に高い。更に、本発明の印刷物は、光沢インキで領域ごとに配列方向の異なる万線画線を形成しているため、ある領域の万線画線の配列方向と複写機等の走査線との違いが生じ、複写機等で複写した場合に本発明の印刷物とは異なる複写物となるため複写防止効果が得られる。よって、本発明は真偽判別、複写防止に優れているため、銀行券、株券、パスポート、有価証券、通行券、カード、商品タグ等の偽造、変造を防止する必要性のある印刷物に適用できる。また、ホログラムのように高価でなく、少量生産にも向いている。
【００５１】
また、本発明の印刷物は下地に印刷絵柄上に設けても効果を奏することができ、また、下地を光を吸収する色彩にすることによって、本発明の印刷物の色彩又は明度の変化量が向上する。特定画像自体にインキの盛りを有するため指感性を有した印刷物となる。また、一度刷りで印刷できるためコストが低く、製品への汎用性が高い。
【００５２】
【図面の簡単な説明】
【図１】基材１上に第１の領域２、第２の領域３、及び第３の領域４からなる特定画像Ｃを示す図である。
【図２】図１におけるＡ−Ｂ断面図である。
【図３】図１の印刷物を垂直方向から観察した場合の図である。
【図４】図１の印刷物を傾けて観察した場合の図である。
【図５】図１の印刷物を傾けて観察した場合の図である。
【図６】図１の印刷物を傾けて観察した場合の図である。
【図７】盛り上がりのある光沢インキを使用した印刷物の説明図を示す。
【図８】平面配向性を有することのない顔料を含有したインキで印刷したインキ皮膜の拡大図である。
【図９】平面配向性を有する光学的変化顔料を含有したインキで印刷したインキ皮膜の拡大図である。
【図１０】光学的変化顔料を含有したインキで印刷した印刷物を斜めから観察した場合の図である。
【図１１】本発明の各領域の外郭形状Ｐを示す図である。
【図１２】任意の点を特定画像内の外郭の中心２１ａに設けた場合の図であり、垂直方向に２個分割し、層状領域を３個設けた場合の図である。
【図１３】任意の点を特定画像内の外郭の中心からずらした点２１ｂに設けた場合の図であり、垂直方向に２個分割し、層状領域を３個設けた場合の図である。
【図１４】隣接の説明図である。
【図１５】実施例１の図である。
【図１６】実施例２の図である。
【図１７】本発明の各領域の外郭形状のその他の例を示す図である。
【符号の説明】
１基材
２第１の領域
３第２の領域
４第３の領域
５第４の領域
２ａ、３ａ、４ａ万線画線
２０特定画像の外郭
２１ａ特定画像内の外郭の中心
２１ｂ特定画像内の外郭の中心からずらした点
Ｃ特定画像
Ｐ外郭形状
Ｗ画線の盛り上がり[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a forgery-preventing printed material applied to a printed material that needs to prevent counterfeiting and alteration of banknotes, stock certificates, passports, securities, passports, cards, product tags, and the like.
[0002]
[Prior art]
Conventionally, in a printed matter that needs to prevent counterfeiting and alteration of banknotes, stock certificates, passports, securities, passports, cards, product tags, etc., a latent image is obtained by inclining the printed matter from the vertical direction. The technique of performing authenticity determination by changing the appearance or color of the image is well known, and the latent image is displayed using the image line structure of the intaglio print, and the color is changed using the optical change ink. And the like. Moreover, a hologram is mentioned as a typical technique in which an image changes continuously when observed gradually from a vertical direction to a horizontal direction with respect to a substrate.
[0003]
Utilizing the image line structure of the intaglio printed matter to cause a latent image to appear, for example, forming an image line portion that becomes a latent image on the intaglio printed line with a high image line, and other intaglio printed image lines The image line portion is composed of an image line lower than the image line portion to be a latent image. Accordingly, there has been disclosed an image in which a latent image appears when the angle of the printed material is changed and observed. Further, there is a technique that develops a latent image by making the width of the image line uniform and different in direction (see, for example, Patent Document 1).
[0004]
[Patent Document 1]
Japanese Examined Patent Publication No. 56-19273 (1st page, Fig. 1-15)
[0005]
This is a multi-colored printed product with a specific pattern printed using pearl gloss ink, and shows a specific pattern showing interference light whose color changes depending on the viewing angle. Furthermore, the color of the pearl gloss ink can be visually confirmed by copying with a color copier. There has been disclosed a printed matter that is reproduced in different colors that can be identified (see, for example, Patent Document 2).
[0006]
[Patent Document 2]
JP-A-9-240133 (page 1-3, FIG. 1)
[0007]
However, Japanese Examined Patent Publication No. 56-19273 discloses a case in which a printed image is prepared by providing a printed pattern on the background of an image having a latent image composed of intaglio image lines. There was a problem that made it difficult to confirm. Moreover, there was little room for improvement as a forgery prevention technology. Further, just printing a specific pattern with pearly luster ink as disclosed in JP-A-9-240133 is a poor anti-counterfeiting technique and may easily be duplicated, leaving room for improvement. In addition, the color or brightness of a specific image did not change gradually. In addition, a hologram is a typical technique in which an image continuously changes when observed in a horizontal direction gradually from a vertical direction with respect to a substrate, but the hologram is expensive and unsuitable for small-scale production.
[0008]
[Problems to be solved by the invention]
The present invention is intended to solve such a conventional problem. The present invention divides a specific image, and each divided area is formed by striated line drawing lines, and each divided image is further divided. By gradually changing the arrangement direction of the line drawing lines that form the defined area and printing with glossy ink, the color or brightness of a specific image can be seen when observing gradually from the vertical direction to the substrate in the horizontal direction. We found anti-counterfeit prints that change continuously.
[0009]
The present invention provides a base material Is provided with a specific image, and the specific image is divided into n (n is an integer of 3 or more) regions, where the n regions are a first region, a second region, a third region,. Divided into n-th regions, a second region is formed such that at least a portion of the first region is adjacent, and a third region is formed so that at least a portion of the second region is adjacent, The nth area is formed so that at least a part of the n-1th area is adjacent to each other, and the n areas are composed of raised line drawings made of glossy ink. 1 region, 2nd region, 3rd region,..., N-1 region and nth region are arranged in different directions, and the line drawing line arrangement direction is the same as that of the first region. The angle of the line drawing line arrangement direction is α1, the angle of the line drawing line arrangement direction of the second area is α2, the line drawing line arrangement direction of the third area is Α1 <α2 when the angle is α3,..., Where the angle in the arrangement direction of the line drawing lines in the (n−1) th region is αn−1 and the angle in the arrangement direction of the line drawing lines in the nth region is αn. <Α3 <... <Αn-1 <αn or α1>α2>α3>...>Αn-1> αn, by observing the printed matter gradually from the vertical direction to the horizontal direction, Since the color or brightness changes gradually from the first region to the nth region or from the nth region to the first region, the specific image can be visually recognized with a lively feeling. Therefore, an object of the present invention is to propose an anti-counterfeit printed matter excellent in authenticity determination and copy prevention.
[0010]
[Means for Solving the Problems]
The present invention provides a base material Is provided with a specific image, and the specific image is The second region is formed so as to be divided into a first region, a second region, and a third region, and at least a part of the first region is adjacent to the second region. The third region is formed so that at least a part thereof is adjacent, and the first region, the second region, and the third region are composed of raised line drawings made of glossy ink, The line drawing line arrangement direction is arranged in a different direction for each of the first area, the second area, and the third area, and the line drawing line arrangement direction is the line drawing line of the first area. Α1 <α2 <, where α1 is the angle in the arrangement direction of the second region, α2 is the angle in the arrangement direction of the line strokes in the second region, and α3 is the angle in the alignment direction of the line strokes in the third region. An anti-counterfeit printed matter satisfying the condition of α3 or α1>α2> α3, When observing gradually from the vertical direction to the anti-counterfeit printed matter in the horizontal direction, because the color or brightness gradually changes from the first region to the third region or from the third region to the first region, A specific image can be visually recognized with a sense of dynamism.
[0011]
In the present invention, the second region is formed so that the adjacent state surrounds the periphery of the first region, and the third region is formed so as to surround the periphery of the second region. This is a forgery-proof printed matter characterized by that.
[0012]
The present invention also provides a substrate Is provided with a specific image, and the specific image is It is divided into n (n is an integer of 3 or more) regions, and the n regions are a first region, a second region, a third region,..., an (n−1) th region. And the nth region, the second region is formed such that at least a part of the first region is adjacent, and the third region is adjacent to at least a part of the second region. A region is formed, and the nth region is formed such that at least a part of the n-1th region is adjacent to each other, and the n regions are raised line-shaped lines made of glossy ink. The line drawing line is arranged in different directions for each of the first area, the second area, the third area,..., The n−1th area, and the nth area. The arrangement direction of the line drawing lines is expressed by an angle α1 of the line drawing line arrangement direction of the first region, The angle of the line drawing line in the area 2 is α2, the angle of the line drawing direction in the third area is α3,... In the line drawing direction of the n-1 area. Α1 <α2 <α3 <... <Αn-1 <αn or α1>α2>α3> when the angle is αn-1 and the angle in the arrangement direction of the line drawing lines of the nth region is αn. ..> [alpha] n-1> [alpha] n satisfying the condition of anti-counterfeit printed matter, and when observed gradually in the horizontal direction from the vertical direction with respect to the anti-counterfeit printed matter, Since the color or brightness changes gradually from the region or the nth region toward the first region, the specific image can be visually recognized with a sense of dynamism.
[0013]
Further, according to the present invention, the second region is formed so that the adjacent state surrounds the periphery of the first region, and the third region is formed so as to surround the periphery of the second region. The anti-counterfeit printed matter is characterized in that the nth region is formed so as to surround the periphery of the n-1th region.
[0014]
Further, the present invention is the forgery-preventing printed matter, wherein in each of the regions, the outer shape of each region is a circle, an ellipse, a polygon, or a logo mark.
[0015]
Further, the present invention is the forgery-preventing printed matter, wherein in each of the regions, the outer shape of each region is a circle, an ellipse, a polygon, or a logo mark.
[0016]
Further, the present invention is the forgery-preventing printed matter, wherein the line width of the line drawing line is in the range of 60 μm to 2000 μm, and the line width of the line drawing line is in the range of 30 μm to 1000 μm.
[0017]
In addition, the present invention is the forgery-preventing printed matter, wherein the height of the raised line drawing line is in the range of 5 μm to 150 μm.
[0018]
In addition, the present invention is the forgery-preventing printed matter, wherein the glossy ink contains an optically changing pigment.
[0019]
In addition, the present invention is the anti-counterfeit printed matter, wherein the optically changing pigment is subjected to a surface treatment for imparting water repellency and oil repellency in order to improve planar orientation.
[0020]
In addition, the present invention is the forgery-preventing printed matter, wherein the specific image is printed over the region provided with the light absorption layer. The anti-counterfeit printed matter is characterized in that a region having low light reflectivity is printed with an ink containing an infrared absorbing material or a magnetic material.
[0021]
Further, the present invention is the forgery-preventing printed matter, wherein the optically changing pigment is a pearl pigment, a metal powder pigment, a glass flake, or a cholesteric liquid crystal pigment.
[0022]
In addition, the present invention is the anti-counterfeit printed matter, wherein the glossy ink is a UV curable ink or an electron beam curable ink.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of an anti-counterfeit printed matter according to the present invention will be described with reference to the drawings. The present invention is not limited to this embodiment, and various modes can be adopted as long as they are within the scope of the technical matters described in the claims of the present invention.
[0024]
A specific image C made up of the first region 2, the second region 3, and the third region 4 on the substrate 1 is shown in FIG. The specific image C is printed with glossy ink. Each of the first region 2, the second region 3, and the third region 4 is formed by a line drawing line, the arrangement direction of the line drawing line 2 a forming the first region 2, the second region The arrangement direction of the line drawing lines 3a forming the third area 3 and the arrangement direction of the line drawing lines 4a forming the third area 4 need to be gradually changed. For example, when the arrangement direction of the line drawing line 2a forming the first region 2 is 0 degree, the arrangement direction of the line drawing line 3a forming the second area 3 is 45 degree, and the third area 4 is formed. The arrangement direction of the drawn line 4a needs to be 90 °. In FIG. 1, the arrangement direction of the line drawing line 2a to the line drawing line 4a is formed counterclockwise, but the arrangement direction of the line drawing line 2a to the line drawing line 4a may be formed clockwise. Further, the arrangement direction of the line drawing line 2a, the line drawing line 3a, and the line drawing line 4a is set to 0 °, 45 °, and 90 °. However, the present invention is not limited to this, and the angle of the line drawing line 2a <10,000. The condition of the angle of the line drawing line 3a <the angle of the line drawing line 4a or the angle of the line drawing line 4a <the angle of the line drawing line 3a <the angle of the line drawing line 2a may be satisfied. Furthermore, the line drawing line 2a, the line drawing line 3a, and the line drawing line 4a are composed of fine drawing lines that are raised. In FIG. 1, the specific image C is divided into three areas of a first area 2, a second area 3, and a third area 4, but the number of areas in the present invention is three or more. The specific image C can be formed by being divided into n (n is an integer of 3 or more) regions without particular limitation. Preferably, n in the n regions is an integer of 3 or more and 100 or less. Further, the outer shape P in FIG. 1 is formed in a circle, but the present invention is not limited to the circular shape, and an arbitrary shape such as an ellipse, a polygon, or a logo mark can be selected. Further, the outer shape P may be formed by a drawing line, only the inside of each region (2, 3, 4) is formed by a line drawing line, and the outer shape P may not form a drawing line. FIG. 2 is a cross-sectional view taken along the line AB in FIG. As shown in FIG. 2, it can be seen that the lines of the line drawing line 2a, the line drawing line 3a, and the line drawing line 4a have a swell W.
[0025]
FIG. 3 shows a view when the printed matter of FIG. 1 is observed from the vertical direction. When the printed material is observed from the vertical direction, the first region 2, the second region 3, and the third region 4 are composed of fine line drawing lines 2a, line drawing lines 3a, and line drawing lines 4a. Therefore, the first region 2, the second region 3, and the third region 4 are printed with glossy ink and are difficult to confirm due to the diffused light and are difficult to confirm. The first region 2, the second region 3, and the third region 4 are visually recognized in a state that is difficult to be divided, and are recognized as regions that are close to solid.
[0026]
When the printed matter of the present invention is observed from the vertical direction, each line of the line drawing lines of the first region 2, the second region 3, and the third region 4 is recognized in order to be recognized as a solid printed matter. It is preferable that each line width of the line drawing line is in the range of 30 μm to 1000 μm, and more preferably, the line width of each line drawing line is from 120 μm in the range of 60 μm to 2000 μm. In the range of 400 μm, it is preferable that each line width of the line drawing line is in the range of 60 μm to 800 μm. If the line width is smaller than 30 μm, it is difficult to produce, and if it is larger than 1000 μm, it is difficult to obtain the effect of the present invention. Further, the ratio of each line width and each non-line width of each line drawing line is preferably 1: 1.
[0027]
When the printed matter of the present invention is observed by being gradually tilted in the horizontal direction from the vertical direction, the line drawing 2a and the line drawing constituting the first region 2, the second region 3, and the third region 4 are observed. Since the arrangement directions of the line 3a and the line drawing line 4a are different, a difference occurs in the amount of specular reflection and the amount of diffused light in the line drawing lines (2a, 3a, 4a) forming the respective regions (2, 3, 4). As shown in FIG. 4, at a specific observation angle, the amount of reflected light in the third region 4 exceeds the amount of reflected light in the first region 2 and the second region 3. At a deep observation angle, as shown in FIG. 5, the reflected light amount of the second region 3 exceeds the reflected light amount of the first region 2 and the third region 4, so the second region 3 becomes obvious and the observation angle is changed. When the depth is further increased, as shown in FIG. 6, the amount of reflected light in the first region 2 exceeds the amount of reflected light in the second region 3 and the third region 4, so that the first region 2 becomes apparent. In this way, when observing gradually from the vertical direction in the horizontal direction, the arrangement direction of the line drawing lines in each area is different, so that a difference occurs in the amount of reflected light of the line drawing lines forming each area. Since the color or brightness changes gradually toward the region 1, the specific image can be visually recognized with a sense of dynamism. In the drawing, the color or light and dark gradually change from the third region toward the first region, but depending on the way of observation, the color or light and dark gradually increase from the first region to the third region. It changes and is visually recognized. Furthermore, the effect of the present invention can be achieved by continuously changing the angle of incident light such as spot light without tilting the printed matter. Further, the printed matter of the present invention has an effect of preventing copying of a copying machine, an image input device or the like. This produces an effect of preventing copying due to printing with glossy ink and the relationship between the line drawing direction and the scanning line of a copying machine or the like.
[0028]
The principle of the present invention will be described with reference to FIG. 7. When a printed matter having a swelled image line using glossy ink is irradiated with light from the direction D, for example, the reflected light amount from the portion d will be described. Since the amount of light reflected by the portions e and f is small, the portion d becomes obvious due to the difference in brightness, and when the light irradiation angle is changed, the amount of light reflected from the portion f becomes light of the portion d. The amount of reflection f exceeds the amount of reflection and becomes part of f. In this way, it is possible to change the timing of visual recognition by producing a raised image line using glossy ink having a mirror surface and changing the angle of the image line. If the height of the raised line drawing of the present invention is in the range of 5 μm to 150 μm, the effect of FIGS. 4 to 6 is improved, so the height of the line drawing line is set in the range of 5 μm to 150 μm. It is preferable.
[0029]
In summary, the present invention provides a base material. Is provided with a specific image, and the specific image is The second region is formed so as to be divided into a first region, a second region, and a third region, and at least a part of the first region is adjacent, and at least a part of the second region Are adjacent to each other, and the first region, the second region, and the third region are formed by swelled line-drawn lines made of glossy ink. Are arranged in different directions for each of the first area, the second area, and the third area, and the arrangement direction of the line drawing lines is defined by an angle α1 of the line drawing line arrangement direction of the first area, the second area When the angle in the arrangement direction of the line drawing line in the area is α2 and the angle in the arrangement direction of the line drawing line in the third area is α3, the condition of α1 <α2 <α3 or α1>α2> α3 is satisfied. An anti-counterfeit printed matter characterized by the fact that water gradually increases from the perpendicular direction to the anti-counterfeit printed matter. When observed in a direction, for color or brightness in accordance with the first region extending from the third region or the third region to the first region is gradually changed, visible with a dynamism in the specific image. Furthermore, since the printed matter forms line drawing lines having different arrangement directions for each area with glossy ink, a difference occurs between the arrangement direction of the line drawing lines in a certain area and the scanning line of a copying machine, etc. When copied by a machine or the like, the copy is different from the printed material of the present invention, so that a copy prevention effect can be obtained.
[0030]
The present invention also provides a substrate Is provided with a specific image, and the specific image is divided into n (n is an integer of 3 or more) regions, where the n regions are a first region, a second region, a third region,. Divided into n-th regions, a second region is formed such that at least a portion of the first region is adjacent, and a third region is formed so that at least a portion of the second region is adjacent, The nth area is formed so that at least a part of the n-1th area is adjacent to each other, and the n areas are composed of raised line drawings made of glossy ink. 1 region, 2nd region, 3rd region,..., N-1 region and nth region are arranged in different directions, and the line drawing line arrangement direction is the same as that of the first region. The angle of the line drawing line arrangement direction is α1, the angle of the line drawing line arrangement direction of the second area is α2, the line drawing line arrangement direction of the third area is Α1 <α2 when the angle is α3,..., Where the angle in the arrangement direction of the line drawing lines in the (n−1) th region is αn−1 and the angle in the arrangement direction of the line drawing lines in the nth region is αn. <Α3 <... <Αn-1 <αn or α1>α2>α3>...>Αn-1> αn, by observing the printed matter gradually from the vertical direction to the horizontal direction, Since the color or brightness changes gradually and gradually from the first region to the nth region or from the nth region to the first region, the specific image can be visually recognized with a lively feeling. Furthermore, since the printed matter forms line drawing lines having different arrangement directions for each area with glossy ink, a difference occurs between the arrangement direction of the line drawing lines in a certain area and the scanning line of a copying machine, etc. When copied by a machine or the like, the copy is different from the printed material of the present invention, so that a copy prevention effect can be obtained.
[0031]
Further, a second region is formed so as to surround the first region, a third region is formed so as to surround the second region,... Around the n−1th region. The effect of FIGS. 4 to 6 is improved by forming the nth region so as to surround it. In this case, the positional relationship between the regions may be in an adjacent state.
[0032]
The specific image of the present invention shown in FIG. 1 needs to be printed with glossy ink. As used herein, the glossy ink only needs to have a specular gloss on the surface, and may be a transparent or translucent ink if the image line itself is raised. In order to improve the effects of FIGS. 4 to 6 of the present invention, it is necessary to include an optically changing pigment in the glossy ink, and pearl pigments, scaly pigments, metal powder pigments, glass flakes, cholesteric liquid crystal pigments, etc. are used in the ink. It is necessary to mix. In the present invention, an ink containing a pearl pigment can exhibit the effects of the present invention most.
[0032]
Further, the optically variable pigment described above preferably has planar orientation. Fig. 8 shows an enlarged view of an ink film printed with an ink containing a pigment having no plane orientation, and Fig. 9 shows an enlargement of an ink film printed with an ink containing an optically variable pigment having a plane orientation. The figure is shown. When printing with ink containing a pigment that does not have planar orientation, the orientation state of the pigment in the ink film of the image line is randomly oriented throughout the ink film as shown in FIG. I understand that. When printing with an ink containing an optically variable pigment having planar orientation, the orientation of the pigment in the ink film of the image line should be neatly aligned on the surface in the ink film as shown in FIG. I understand. Here, the plane orientation (leafing effect) is a pigment that has been subjected to water and oil repellency treatments. Since the pigment has water repellency and oil repellency, the pigment settles at the bottom of the ink film. Orients cleanly on the surface of the ink film because it is difficult. However, pigments that have not undergone water and oil repellency treatments, that is, pigments that do not have planar orientation, do not neatly align the pigment on the surface of the ink film because the ink dries before the pigment is oriented. The effect of the present invention is inferior to pigments having water repellency and oil repellency.
[0033]
Next, the effect of the ink containing the optically changing pigment will be described. Examples of the optically changing pigment include pearl pigments, scaly pigments, metal powder pigments, glass flake pigments, and cholesteric liquid crystal pigments. However, the interference light varies depending on the refractive index, shape, thickness, size, particle distribution in the ink film, and the like of the optically changing pigment. FIG. 10 shows a view when a printed matter printed with an ink containing an optically changing pigment is observed obliquely. As shown in FIG. 10, when the light from the incident light X is reflected on the ink film, the reflected light Y is affected by the optically changing pigment, and is observed from the vertical direction of the optically changing pigment. A different color of light is generated and becomes interference light.
[0034]
The pearl pigment used here may be an iris pearl pigment, a dichroic pearl pigment, or another scale pigment. The particle size of the pearl pigment is 1 μm to 150 μm, preferably 5 μm to 50 μm, and the average particle size is preferably about 10 μm to 25 μm.
[0035]
When the printed material of the present invention is observed in the horizontal direction gradually from the vertical direction, the color or brightness changes gradually and continuously, so that the specific image can be visually recognized with a lively feeling.
[0036]
When observing the anti-counterfeit printed matter of the present invention gradually in the horizontal direction from the vertical direction, in order for the color or light and dark to change gradually and continuously, it is necessary to make the image line that rises, and the height of the image line is high. Is preferably in the range of 5 μm to 150 μm. If the height of the ink is less than 5 μm, it is difficult to confirm the effect of the present invention, and if it exceeds 150 μm, it is difficult to produce.
[0037]
The shape of the line drawing line of the present invention can be formed by a straight line pattern, a curved line pattern or the like, and is not particularly limited. Furthermore, although it is preferable to use a solid line for each of the line drawing lines, a dotted line, a broken line, or the like may be used. Further, a solid line, a broken line, a dotted line, or the like may be formed with minute characters. In addition, by gradually or continuously changing the line width of each line of the line drawing line, the color or light and darkness is clear when observing the anti-counterfeit printed matter of the present invention gradually from the vertical direction to the horizontal direction. The specific image can be visually recognized with gradation expression.
[0036]
The outer shape P of each region of the present invention may be any shape such as a circle, a polygon or a logo mark as shown in FIG. As shown in FIG. 12, the plurality of regions of the present invention are obtained by dividing a plurality of regions of a specific image and an arbitrary point in the specific image in the vertical direction, and each of the divided points is a plurality of regions. Each boundary area becomes a reference, and the shape of each boundary area is formed by forming a plurality of areas with the same or approximate shape as the outline shape of the specific image. FIG. 12 is a diagram in the case where an arbitrary point is provided at the center 21a of the outline 20 in the specific image, and is a diagram in the case where two regions 22 are divided vertically and three regions are provided. Further, FIG. 13 is a diagram in the case where an arbitrary point is provided at a point 21b shifted from the center of the outline 20 in the specific image, and is a diagram in the case where two regions 22 are divided vertically and three regions are provided. It is. 12 and 13, the second region is formed so as to surround the first region, and the third region is formed so as to surround the second region. The present invention is not limited to this, and the second region 3 is formed such that at least a part of the first region 2 is adjacent as shown in FIG. 14, and at least a part of the second region 3 is adjacent. Thus, the fourth region 5 may be formed such that the third region 4 is formed and at least a part of the third region 4 is adjacent. Here, the term “adjacent” means that at least a part of the region is in contact, or at least a part of the region is in contact with each other.
[0037]
The present invention is not limited to the shapes shown in FIGS. 11 to 13 and may have a shape as shown in FIG. Another example is shown in FIG. As an example in which the outer shape gradually changes from the first region to the nth region, FIG. 17A shows a state in which the shape gradually changes from a square to a triangle. Moreover, the array angle of the line drawing lines of each graphic area is different. FIG. 17B is formed by petals, and the arrangement angle of the line drawing lines in each petal region is different.
[0038]
The angle in the arrangement direction of the image lines of the present invention is such that the angle formed by the image lines of adjacent regions is 1 degree or more and 179 degrees or less, and preferably 5 degrees or more and 45 degrees or less.
[0039]
The specific image of the present invention is preferably an oxidation polymerization type ink, a UV curable ink, an electron beam curable ink, an ink having both ultraviolet curing and oxidation polymerization functions (see Japanese Patent No. 2113880), or a two-component mixed ink. The printing method is not particularly limited, but an intaglio printing method or a screen printing method is preferable.
[0040]
The pearl pigment used here may be an iris pearl pigment, a dichroic pearl pigment, or another scale pigment. However, a material that has been subjected to pigment surface treatment (for example, water repellency and oil repellency treatment as shown in JP-A-2001-106937) is used so that the pigment is oriented on the surface of the raised image line. As a result, the orientation (leafing effect) of the scaly pigment can be improved, and the pigment can be oriented on the surface of the printed material as shown in FIG. 9 to improve the effect of the present invention. In this case, since the swelled image line needs to be fast-curing, UV curable ink, electron beam curable ink, ink having ultraviolet curing and oxidative polymerization functions (see Japanese Patent No. 2113880), or two-component mixing It is necessary to print with an ink in which a pigment that has been subjected to surface treatment (water repellency or oil repellency treatment) as described above is mixed with the mold ink, and after printing, it is necessary to irradiate active energy rays such as an ultraviolet irradiation device. Therefore, the pigment does not settle even when a steep image line is used, and the effect of the present invention can be improved by orienting the pigment on the surface of the printed material as shown in FIG. If water and oil repellency treatments have not been applied, the ink cures before the scaly pigment is oriented, so the pearl effect does not occur or even if the pearl effect occurs, the water and oil repellency treatments are applied. The effect is inferior compared to the pigment obtained.
[0041]
Further, according to the present invention, the effect of FIGS. 4 to 6 is improved by printing the specific image over the region where the light absorption layer is provided. Here, the light absorption layer is formed by the color of printing or the color of the substrate having a low light reflectance, that is, a high density, and the black type is most effective. Moreover, the forgery prevention effect improves by printing the area | region which provided the light absorption layer with the ink containing an infrared rays absorption material or a magnetic material. The printing method for undercoating the specific image is not particularly limited, but an offset printing technique is preferable. The printing method of the specific image is not particularly limited, but it is preferable to use an intaglio printing technique or a screen printing technique. The viscosity of the ink used for printing a specific image is about 5 poise to 200 poise. After printing and until drying, the optically changing pigment having planar orientation on the surface, the lower part of the optically changing pigment oriented on the surface The viscosity is preferably such that it can be separated into a pigment having no planar orientation. Further, no special adjustment is required for adjustment of the printing press, and printing can be performed with general settings.
[0042]
As the base material of the present invention, paper sheets, plastic films, metals, cloths and the like can be used.
【Example】
EXAMPLES Hereinafter, although this invention is demonstrated further in detail using an Example, the content of this invention is not limited to the range of these Examples.
[0043]
Example 1
As shown in FIG. 15, a specific image C composed of a first region 2, a second region 3, and a third region 4 is created, and each region has a line drawing having a pitch width of 200 μm and a line width of 100 μm. When the angle of the arrangement direction of the line drawing lines of the first area 2 is 0 degree, the line drawing line of the second area 2 is 45 degrees, and the line drawing line of the third area 2 is The specific image C was obtained at 90 degrees. Each region was formed in order from the center of the outline of the specific image. The outer shape of each region was formed in a square shape.
[0044]
Based on the obtained specific image C, a screen plate surface was prepared, and ink was prepared at the following blending ratio.

Using the obtained screen plate surface and screen ink, printing was performed with a screen printer to obtain a printed matter of Example 1.
[0045]
When the printed matter of Example 1 is observed from the vertical direction, the specific image is recognized as a print area that is almost uniform and solid, and the first area 2, the second area 3, and the third area 4 are visually observed. It is in a state where it is difficult to distinguish. When the printed matter of Example 1 is observed obliquely at a shallow angle, the amount of reflected light in the third region 4 exceeds the amount of reflected light in the first region 2 and the second region 3, and the third region 4 becomes apparent. At a deep observation angle, the amount of reflected light in the second region 3 exceeds the amount of reflected light in the first region 2 and the third region 4, and the second region 3 becomes obvious. The amount of reflected light 2 exceeded the amount of reflected light of the second region 3 and the third region 4, and the first region 2 was apparent. That is, the color or brightness gradually changes from the third region toward the first region, so that the specific image can be visually recognized with a lively feeling like a moving image.
[0046]
(Example 2)
As shown in FIG. 16, a specific image C composed of the first region 2, the second region 3, and the third region 4 is created, and each region has a line drawing having a pitch width of 200 μm and a line width of 100 μm. The line drawing line of the second area 3 is 45 degrees, and the line drawing line of the third area 4 is 45 degrees when the angle in the arrangement direction of the line drawing lines of the first area 2 is 0 degree. The specific image C was obtained at 90 degrees. Each region was formed by shifting from the center of the outline of the specific image. The outer shape of each region was formed in a circular shape.
[0047]
On the basis of the obtained basic image C, a screen plate surface was prepared, and ink was prepared at the following blending ratio.

Using the obtained screen plate surface and screen ink, printing was performed with a screen printer to obtain a printed material of Example 2.
[0048]
The printed matter of Example 2 was inferior in effect to the printed matter of Example 1, but a printed matter having a similar effect could be produced.
[0049]
Although the present invention has been described based on the present embodiment, the present invention is not limited to this embodiment, and various other embodiments are conceivable as long as they are within the scope of the technical idea described in the claims.
[0050]
【The invention's effect】
The present invention provides a base material Is provided with a specific image, and the specific image is divided into n (n is an integer of 3 or more) regions, where the n regions are a first region, a second region, a third region,. a second region is formed so that at least a part of the first region is adjacent, a third region is formed so that at least a part of the second region is adjacent, The n-th region is formed so that at least a part of the n-1 region is adjacent to each other, and the n regions are formed by raised line-drawing lines made of glossy ink, and the arrangement direction of the line-drawing lines is the first. , Second region, third region,..., The (n-1) th region and the nth region are arranged in different directions, and the arrangement direction of the line drawing lines is the same as that of the first region. The angle of the line drawing line arrangement direction is α1, the angle of the line drawing line arrangement direction of the second area is α2, and the line drawing line of the third area is α2. The angle of the arrangement direction of the lines is α3,..., The angle of the arrangement direction of the line drawing lines of the n−1th region is αn−1, and the angle of the arrangement direction of the line drawing lines of the nth region is αn. Then, by satisfying the condition of α1 <α2 <α3 <... <Αn-1 <αn or α1>α2>α3>. When the image is observed in the horizontal direction, the color or brightness gradually changes from the first region to the nth region or from the nth region to the first region, so that the specific image can be visually recognized with a lively feeling. . That is, since the specific image has a dynamic effect, the visual effect is very high. Furthermore, since the printed matter of the present invention forms a line drawing line having a different arrangement direction for each area with glossy ink, a difference occurs between the arrangement direction of the line drawing line in a certain area and a scanning line of a copying machine, etc. When copied by a copying machine or the like, the copy is different from the printed material of the present invention, so that a copy prevention effect can be obtained. Therefore, since the present invention is excellent in authenticity determination and copy prevention, it can be applied to printed matter that needs to prevent counterfeiting and alteration of banknotes, stock certificates, passports, securities, passports, cards, product tags, etc. . Moreover, it is not expensive like a hologram and is suitable for small-scale production.
[0051]
In addition, the printed matter of the present invention can be effective even if it is provided on a printed pattern on the background, and the amount of change in color or brightness of the printed matter of the present invention is improved by making the background a color that absorbs light. To do. Since the specific image itself has a heap of ink, it becomes a printed matter having finger sensitivity. In addition, since printing can be performed once, the cost is low and the versatility of the product is high.
[0052]
[Brief description of the drawings]
FIG. 1 is a diagram showing a specific image C made up of a first region 2, a second region 3, and a third region 4 on a substrate 1. FIG.
FIG. 2 is a cross-sectional view taken along the line AB in FIG.
3 is a view when the printed matter of FIG. 1 is observed from the vertical direction. FIG.
FIG. 4 is a diagram when the printed matter of FIG. 1 is observed while being tilted.
FIG. 5 is a diagram when the printed matter of FIG. 1 is observed while being tilted.
6 is a view when the printed matter of FIG. 1 is observed while being tilted. FIG.
FIG. 7 is an explanatory diagram of a printed material using glossy ink with a rise.
FIG. 8 is an enlarged view of an ink film printed with an ink containing a pigment having no planar orientation.
FIG. 9 is an enlarged view of an ink film printed with an ink containing an optically variable pigment having planar orientation.
FIG. 10 is a view when a printed matter printed with an ink containing an optically changing pigment is observed obliquely.
FIG. 11 is a diagram showing an outer shape P of each region according to the present invention.
FIG. 12 is a diagram in the case where an arbitrary point is provided at the center 21a of the outline in the specific image, and is a diagram in which two layers are divided in the vertical direction and three layered regions are provided.
FIG. 13 is a diagram in the case where an arbitrary point is provided at a point 21b shifted from the center of an outline in a specific image, and is a diagram in which two points are divided vertically and three layered regions are provided.
FIG. 14 is an explanatory diagram of adjacency.
15 is a diagram of Example 1. FIG.
16 is a diagram of Example 2. FIG.
FIG. 17 is a diagram showing another example of the outer shape of each region according to the present invention.
[Explanation of symbols]
1 Base material
2 First area
3 Second area
4 Third area
5 4th area
2a, 3a, 4a
20 Outline of specific image
21a Center of outline in specific image
21b Point shifted from the center of the outline in the specified image
C Specific image
P outer shape
W Strike

Claims

A specific image is provided on a part of the substrate , and the specific image is formed by being divided into a first region, a second region, and a third region so that at least a part of the first region is adjacent to the first region. The second region is formed, and the third region is formed such that at least a part of the second region is adjacent to the first region, the second region, and the third region. Is composed of raised lines made of glossy ink, and the lines are arranged in different directions for each of the first area, the second area, and the third area. The arrangement direction of the line drawing lines is set such that the angle of the line drawing line arrangement direction of the first area is α1, the angle of the line drawing line arrangement direction of the second area is α2, and the line drawing line of the third area is Where α3 <α2 <α3 or α1>α2> α3 Anti-counterfeit printed matter characterized in that the plus.

The second region is formed so that the adjacent state surrounds the periphery of the first region, and the third region is formed so as to surround the periphery of the second region. An anti-counterfeit printed matter according to claim 1.

A specific image is provided on a part of the substrate , and the specific image is formed by dividing into n (n is an integer of 3 or more) regions, and the n regions are a first region and a second region. A second region is formed so that at least a part of the first region is adjacent to the first region; and the third region is divided into an n-1th region and an nth region. The third region is formed such that at least a part of the second region is adjacent, and the nth region is formed so that at least a part of the n−1 region is adjacent, The n areas are composed of raised line-drawn lines made of glossy ink, and the arrangement direction of the line-drawn lines is the first area, the second area, the third area,. The n-1 region and the nth region are arranged in different directions, and the line drawing line is arranged in the first direction. The angle of the line drawing line in the area of the first area is α1, the angle of the line drawing line of the second area in the arrangement direction is α2, the angle of the line drawing direction of the third area is α3,. .Alpha.1 <.alpha.2 <.alpha.3 <.sub.1 where .alpha.n-1 is the angle of the line drawing line in the n-1 region and .alpha.n is the angle in the line drawing direction of the nth area. .. <[alpha] n-1 <[alpha] n or [alpha] 1> [alpha] 2> [alpha] 3>...> [alpha] n-1> [alpha] n satisfying the condition of forgery prevention printed matter.

The second region is formed so that the adjacent state surrounds the periphery of the first region, the third region is formed so as to surround the periphery of the second region, ... 4. The forgery-preventing printed matter according to claim 3, wherein the n-th region is formed so as to surround the periphery of the n-1 region.

5. The forgery-preventing printed matter according to claim 3, wherein the outer shape of each of the regions is a circle, an ellipse, a polygon, or a logo mark.

6. The line width of the line drawing line is in a range of 60 μm to 2000 μm, and the line width of the line drawing line is in a range of 30 μm to 1000 μm. Anti-counterfeit printed matter.

The forgery-preventing printed matter according to claim 1, 2, 3, 4, 5 or 6, wherein the height of the swelled line drawing line is in the range of 5 µm to 150 µm.

The anti-counterfeit printed matter according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the glossy ink contains an optically changing pigment.

9. The anti-counterfeit printed matter according to claim 8, wherein the optically changing pigment is subjected to a surface treatment for imparting water repellency and oil repellency in order to improve planar orientation.

10. The forgery-preventing printed matter according to claim 1, 2, 3, 4, 5, 6, 7, 8, or 9, wherein the specific image is printed in an overlapping manner on a region provided with a light absorption layer.