JP3689786B2

JP3689786B2 - Printed matter with copy protection pattern

Info

Publication number: JP3689786B2
Application number: JP36527898A
Authority: JP
Inventors: 和彦 ▲島▼田
Original assignee: 独立行政法人国立印刷局
Priority date: 1998-12-22
Filing date: 1998-12-22
Publication date: 2005-08-31
Anticipated expiration: 2018-12-22
Also published as: JP2000185457A

Description

【０００１】
【発明の属する技術分野】
本発明は、銀行券、株券、債券等の有価証券、各種証明書及び重要書類等の偽造、変造を防止する必要性がある印刷物において、複写機により複写した場合に、複写物の判別機能を付与する複写防止模様の作成方法及びその印刷物に関するものである。
【０００２】
【従来の技術】
銀行券、株券、債券等の有価証券、各種証明書及び重要書類等の印刷物において偽造、変造防止策は重要な要素である。これら印刷物の偽造、変造防止策は主に幾何学模様を多様化した図柄をデザインに用いる方法と、印刷物に対し何等かの手段と作用を加えると目視では認識できなかった潜像を現出するような方法がある。前者の代表的な例は、証券印刷物等のデザインに広く用いられている地紋、彩紋模様、レリーフ模様等があり、後者の代表的な例は潜像凹版、複写機で色が正常に再現されないような機能性インキ、コピー防止画線等がある。しかし、最近のカラー複写機の著しい普及に伴い、偽造、変造による犯罪が増加する危険性を有しており、より一層効果の高い偽造、変造防止策として技術の開発が望まれていた。
【０００３】
前記の幾何学模様を用いる偽造、変造防止としては、地紋、彩紋模様、レリーフ模様等があり、基本的に一定の画線幅による曲画線の集合によって模様を構成しているものである。これらの模様は印刷物のデザイン等の意匠性を加味し、偽造、変造防止策を施すことができ、模様を複雑にすることによって偽造物における同一の模様を作製しようとするのを困難とし、写真製版装置による抽出、又は、複写機では再現されにくい色彩を用いたり、複雑な曲画線にして複写機及びスキャナーの走査入出力に対するモアレを発生させたりすることで偽造防止策としての役割を高めている。また、前記模様類は証券印刷物等のデザインにおいて世界的に広く用いられていると同時に、銀行券、株券、債券等の金銭的価値を有する印刷物の模様として古くから用いられ、現在でも一般的に高級感を印象づけるデザインとして重要な模様となっている。従って、銀行券、株券、債券等の有価証券、各種証明書及び重要書類等の印刷物において、地紋、彩紋模様、レリーフ模様等はデザイン上欠かすことのできない模様である。しかし、最近では高機能化した写真製版装置、又は、複写機の出現によって十分な偽造、変造防止効果をもたらしていないという欠点がある。
【０００４】
また、前記の印刷物に対し何等かの手段と作用を加えると、目視では認識できなかった潜像を現出するような方法の代表的な技術として、一般的にコピー防止画線と称する一連の技術がある。即ち複写機によって複写することにより、印刷物中に施してあった潜像が現出するものである。このような複写機による偽造防止に適する印刷物においては、基紙表面に例えば８５線３０％の網点である微細構成素子よりなる文字を表示した潜像を銀インキを用いて印刷し、次にこの潜像以外の余白部に前記潜像より粗、又は、密（例えば１５０線３０％）の網点で印刷を施すと共に、前記潜像の上面に彩紋や地紋等の印刷模様を施す、複写による偽造防止に適する潜像入り印刷物（特開昭５７−２０３９５号公報）があり、また、用紙の表面に網点で潜像を印刷し、万線で潜像と同濃度の背景を同時印刷し、背景を含む潜像の上面に装飾模様をコピーで再現されない程度の薄色の透明性インキで重ね刷りすることにより、印刷物表面を体裁よく仕上げ、コピーにかけると模様は見えなくなり、背景は再現されると共に潜像は再現されず、背景と潜像の濃度差が歴然となって複写物であることが一見して分かる、複写防止に適する印刷物（特開昭６０−７９９９１号公報）があり、さらに、１５０線１０％の網点よりなる潜像をそなえ、且つ潜像周囲の白地面に５０〜６０線１０％程度の万線よりなる背景を備えた潜像版を用いて、用紙の表面に濃色の印刷を施し、背景の万線と干渉した時にモアレ模様を形成する平行線よりなる波形パターンを備えたオーバープリント版を用いて、用紙表面に複写機で再生されない淡色の重ね刷りを施すことにより、印刷物の表面は肉眼を幻惑するモアレ模様が形成されるので潜像の存在は識別困難となり、複写機にかけると潜像と波形パターンは再生されずに背景のみが再生されるので、潜像が背景と区別して認められる、印刷物における複写防止用潜像カムフラージ法（特開昭６０−８７３８０号公報）等が開示されている。
【０００５】
前記公報等による印刷物は、いずれも網点もしくは万線等の点及び線が一定周期で連続配置する画線群（以下、スクリーンパターンと称する）の粗密によって潜像が施され、図１１の印刷物（１）に示すように、印刷面全体の模様（２）が均一濃度を持ったスクリーンパターンとなっている。前記潜像が施された印刷物（１）を複写機によって複写した際、再生されない密構成のスクリーンパターン（３）と、再生される粗構成のスクリーンパターン（４）とは、図１２の複写物（１’）の模様（２’）に示すように濃度差が生じて、再生される粗構成のスクリーンパターン（４’）に対して、再生されない密構成のスクリーンパターン（３’）の潜像部分が現出するようにして、複写物であることが一目瞭然となるようにしたものであるが、印刷面全体が均一濃度を持ったスクリーンパターンという特徴から、肉眼視においても同一印刷面上の異なるスクリーンパターンによって、スクリーン形状の違いによる異別感及びスクリーンパターンゆえに生ずる潜像の境界線との干渉部（５）により、潜像の存在を識別できてしまう欠点がある。
【０００６】
そこで、前記欠点を解決する方法として、前記公報等はいずれも潜像をカムフラージするために別の模様や薄色の透明インキ、淡色の重ね刷りを施しているが、前記方法は潜像を識別しにくくする点では有効であるが、工程数が増え経済的でないという欠点を有している。
【０００７】
また、前記した従来技術の方法はいずれも網点もしくは万線等の点及び線の粗密からなるスクリーンパターンでなければならないため、地紋、彩紋模様を多用している銀行券、株券、債券などの有価証券等の既存製品に用いるには適さないという欠点があった。
【０００８】
また、本願出願人は、用紙表面に網点又は万線等のパターンからなる潜像と、該潜像周囲に前記潜像とは粗密が異なるパターンからなる背景を１色で同時印刷した印刷物において、該潜像を施した潜像模様が肉眼では識別されないことを特徴とする複写防止に適する印刷物（特開平４−１７０５６９号公報）として、潜像をカムフラージするための別の模様や薄色の透明インキ、さらには、淡色の重ね刷りを施さず、白抜きの円形模様や、全面的なスクリーンパターンに対する部分的なスクリーンパターンの網点パーセントを増加した同心円模様等で、カムフラージする方法を既に出願していが、前述したとおり前記従来技術は何れもスクリーンパターンにより潜像を施しているため潜像の視認は容易であり、単色印刷物では別途、上書きされる文字等の情報がカムフラージの役割を果たさなければならないことから、あくまでも文字等の背景となす地紋模様にしか活用できず、潜像を施した単色印刷画線模様そのものを彩紋模様のごとく自由なデザイン化した模様にしたり、装飾効果をもった美術的な印刷物にすることは不可能であるという欠点があった。さらに、前記従来技術の方法はいずれも網点もしくは万線等の点及び線の粗密からなるスクリーンパターンでなければならないため、地紋、彩紋模様を多様している銀行券、株券、債券などの有価証券の既存の製品に用いるには適さないという欠点があった。
【０００９】
そこで、これらの欠点を解決するために、本願出願人は、曲画線の集合模様に、潜像を施さない部分を１本線、潜像を施した部分を２本線以上で表現し、潜像を施した部分の２本線以上の画線の合計の画線幅が、潜像を施さない１本線の画線の画線幅と等しくなるように、潜像を施さない部分の１本線から分岐し、潜像を施さない部分と潜像を施した部分の画線上の境界線が、前記模様を構成する基本線と潜像の輪郭線の交点において接する直線に対し、略直角に交わる直線であり、前記潜像を施した部分の２本線以上で一組となっている画線において、一組ごとの前記画線同士が交差する部分で、両者一組ごとの前記画線同士を、両者一組ごとの画線の画線間の内側の範囲内で削除したことを特徴とした、複写防止模様の作成方法及びその印刷物（特開平９−１３６４８０号公報）を既に出願している。
【００１０】
さらに、本願出願人は、前記複写防止模様を施した印刷物を、複写機に対してより効果のあるものにするために、さらに改良を加えた。曲線状の集合模様を、潜像を施さない部分の画線を連続線、潜像を施した部分の画線を基本線方向に一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に連続した一つの画線部と非画線部からなる一周期に相当する部分の画線面積の総和が、潜像を施さない部分の連続線のうち、基本線方向における前記一周期と同一の長さに相当する部分の画線面積と等しくし、さらに、前記潜像を施した部分の定周期断絶線となっている画線において、定周期断絶線の画線同士が交差する部分で、前記画線同士のどちらか一方の画線を、もう一方の画線の画線幅の範囲内で削除することを特徴とした、複写防止模様の作成方法及びその印刷物（特開平９−２４０１３５号公報）を出願している。しかし、最近のカラー複写機の解像度の著しい技術進歩に伴い、前記公報の印刷物を複写機で複写した場合に、明瞭に潜像が発現することが困難になってきているという問題があった。
【００１１】
【発明が解決しようとする課題】
本発明は、前述した問題を解決しようとするものである。複写防止模様における潜像の非視認性を高める方法として、人間の目の特性ならびに心理学的見地から考えると、人間の目は、画像の低周波に感度が良く、高周波に感度が悪い。つまり、低周波通過フィルタの特性を持っているので、例えば、小さな点がたくさん並んでいる時、低周波フィルタ特性から画像がぼやけるということ、心理学者（ウェストハイマー）が人間の頭脳のメカニズムについて見出した法則に、近接した線や点は一つのまとまりとなるという近接の法則がある。これらが同時に起こると、例えば、小さな点が線上に並んだ場合、それら点の集合は濃度が等しいので、１本の線として認識されることになる。そこで、これらを考慮し、潜像の非視認性をより高めるための画線設計を開発した。すなわち、複写機で潜像が出現する効果をより一層高めるために、また、変化の印象を高めるため、潜像部を細分化することにより、複写機による潜像の出現を高めることができる複写防止模様の作成方法及びその印刷物を提供する。
【００１２】
【課題を解決するための手段】
【００１３】
本発明は、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、複数に分岐した画線がそれぞれ一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における所定の長さと同一の長さに相当する部分の画線面積より大きい定周期断絶線で構成することで、複写すると潜像を施した部分が視認不可能となる複写防止模様を有する印刷物である。
【００１４】
また、本発明は、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における所定の長さと同一の長さに相当する部分の画線面積と等しい定周期断絶線で構成することで、複写すると潜像を施した部分が視認可能となる複写防止模様を有する印刷物である。
【００１５】
また、本発明は、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における所定の長さと同一の長さに相当する部分の画線面積より大きい定周期断絶線で構成することで、複写すると潜像を施した部分が視認不可能となる複写防止模様を有する印刷物である。
【００１６】
また、本発明は、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、複数に分岐した画線がそれぞれ一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる第１の所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における第１の所定の長さと同一の長さに相当する部分の画線面積より大きい定周期断絶線で構成した第１の視認性模様と、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる第２の所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における第２の所定の長さと同一の長さに相当する部分の画線面積と等しい定周期断絶線で構成した第１の非視認性模様とを設けることで、複写すると第１の視認性模様が視認不可能となり、第１の非視認性模様が視認可能となる複写防止模様を有する印刷物である。
【００１７】
また、本発明は、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる第１の所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における第１の所定の長さと同一の長さに相当する部分の画線面積より大きい定周期断絶線で構成した第２の視認性模様と、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる第２の所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における第２の所定の長さと同一の長さに相当する部分の画線面積と等しい定周期断絶線で構成した第２の非視認性模様とを設けることで、複写すると第２の視認性模様が視認不可能となり、第２の非視認性模様が視認可能となる複写防止模様を有する印刷物である。
【００１８】
また、本発明は、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、複数に分岐した画線がそれぞれ一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる第１の所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における第１の所定の長さと同一の長さに相当する部分の画線面積より大きい定周期断絶線で構成した第１の視認性模様と、複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる第２の所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における第２の所定の長さと同一の長さに相当する部分の画線面積と等しい定周期断絶線で構成した第２の非視認性模様とを設けることで、複写すると第１の視認性模様が視認不可能となり、第２の非視認性模様が視認可能となる複写防止模様を有する印刷物である。
【００１９】
また、本発明は、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる第１の所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における第１の所定の長さと同一の長さに相当する部分の画線面積より大きい定周期断絶線で構成した第２の視認性模様と、複数に分岐した画線がそれぞれ一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる第２の所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における第２の所定の長さと同一の長さに相当する部分の画線面積と等しい定周期断絶線で構成した第１の非視認性模様とを設けることで、複写すると第２の視認性模様が視認不可能となり、第１の非視認性模様が視認可能となる複写防止模様を有する印刷物である。
【００２０】
【発明の実施の形態】
従来からの複写機による偽造防止に適する印刷物では、網点もしくは万線等のスクリーンパターンの粗密によって潜像が施され、印刷面全体が均一濃度を持ったスクリーンパターンとなっているのに対し、本発明は、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線がそれぞれ一定の間隔で配列された形状の画線からなる定周期断絶線で構成することにより、非視認性が高まり、しかも潜像部を細分化するため、複写機で複写した場合、肉眼ではより一層明瞭に潜像が発現する。
【００２１】
また、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線がそれぞれ一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における前記所定の長さと同一の長さに相当する部分の画線面積と等しい定周期断絶線で構成する複写防止模様（以下、第１の非視認性の複写防止模様の画線という。）としているので、この複写防止模様を印刷した印刷物を観察した場合、第１の非視認性の印刷物の画線は、潜像を施さない部分の実線の延長であるかのように認識されることにより、肉眼では潜像をまったく識別できない。
【００２２】
また、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線がそれぞれ一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における前記所定の長さと同一の長さに相当する部分の画線面積より大きい定周期断絶線で構成する複写防止模様（以下、第１の視認性の複写防止模様の画線という。）としているので、この複写防止模様を印刷した印刷物を観察した場合、第１の視認性の複写防止模様の画線は、肉眼で識別できる。
【００２３】
即ち、第１の非視認性の複写防止模様の画線においては、潜像を施さない部分の画線と第１の非視認性の複写防止模様の画線では、基本線方向における前記所定の長さと同一の長さに相当する部分で等しい画線面積とし、且つ、膨張値等を加味した画線を印刷した印刷物の全体を観察した場合、観察者には第１の非視認性の複写防止模様の画線が定周期断絶線であるにもかかわらず、潜像を施さない部分の画線の延長であるかのように認識されることにより、肉眼では第１の非視認性の複写防止模様の画線をまったく識別できなくすることを可能にしている。
また、第１の非視認性の複写防止模様の画線を有した印刷物を複写機により複写すると、第１の非視認性の複写防止模様の画線は複写機の解像力から、潜像を施さない部分の画線はそのまま再生され、第１の非視認性の複写防止模様の画線は再生されないか、もしくは再生不能となるため、複写物を肉眼で観察した場合、潜像を施さない部分の画線は、基本線方向に連続した１本の画線として認識され、第１の非視認性の複写防止模様の画線は、細分化され認識不能となり、第１の非視認性の複写防止模様の画線と潜像を施さない部分の画線に濃度差が生じ、肉眼では第１の非視認性の複写防止模様の画線は背景色とほぼ同色となり、第１の非視認性の複写防止模様が発現する。
【００２４】
また、第１の視認性の複写防止模様の画線においては潜像を施さない部分の画線と第１の視認性の複写防止模様の画線では、基本線方向における前記所定の長さと同一の長さに相当する部分で、潜像を施した前記所定の長さの画線面積の総和の方が大きい画線面積とし、前記大きい画線面積量は、複写機による潜像を施さない部分の実線と定周期断絶線の再現性の違いを考慮して、複写後に基本線方向における前記所定の長さと同一の長さに相当する部分で等しい画線面積になるように、基本線方向における前記所定の長さと同一の長さに相当する部分で、第１の視認性の複写防止模様の画線における前記所定の長さの画線面積の総和は、複写後の基本線方向における前記所定の長さと同一の長さに相当する部分での画線面積量（濃度）の差分を加え、且つ、膨張値等を加味した画線で印刷物全体を観察した場合、観察者には潜像を施さない部分の画線よりも第１の視認性の複写防止模様の画線の方が画線面積量（濃度）が濃いので、第１の視認性の複写防止模様の画線は複写前に肉眼で識別することができる。また、第１の視認性の複写防止模様の画線を有した印刷物を複写機により複写すると、第１の視認性の複写防止模様の画線は定周期断絶線のため潜像を施さない部分の画線より、複写機の画像の再現における潜像を施さない部分の画線の実線と定周期断絶線との収縮する割合が前記差分だけ多く、基本線方向における前記所定の長さと同一の長さに相当する部分で等しい濃度となり、第１の視認性の複写防止模様の画線は潜像を施さない部分の画線と同化し、第１の視認性の複写防止模様の画線が正確に再現されていないにもかかわらず、潜像を施さない部分の画線の実線の延長であるかのように認識されるため、肉眼では第１の視認性の複写防止模様の画線を識別できない。
【００２５】
また、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における前記所定の長さと同一の長さに相当する部分の画線面積と等しい定周期断絶線で構成する複写防止模様（以下、第２の非視認性の複写防止模様の画線という。）としているので、この複写防止模様を印刷した印刷物を観察した場合、非視認性の印刷物の画線は、潜像を施さない部分の実線の延長であるかのように認識されることにより、肉眼では潜像をまったく識別できなくすることを可能にしている。また、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線からなる定周期断絶線で構成しているため、第２の非視認性の複写防止模様の画線を有した印刷物を複写機により複写すると、第２の非視認性の複写防止模様の画線は複写機の走査線の特徴から、第２の非視認性の複写防止模様の画線は再生されないか、もしくは再生不能となるため、第２の非視認性の複写防止模様の画線は、より細分化され認識不能となり、第２の非視認性の複写防止模様の画線と潜像を施さない部分の画線により濃度差が生じ、肉眼では第２の非視認性の複写防止模様の画線は背景色とほぼ同色となり、第２の非視認性の複写防止模様が一層明瞭に発現する。
【００２６】
また、直線又は曲線状の１本又は複数の画線からなる模様を、潜像を施さない部分の画線を実線で、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における前記所定の長さと同一の長さに相当する部分の画線面積より大きい定周期断絶線で構成する複写防止模様（以下、第２の視認性の複写防止模様の画線という。）としているので、この複写防止模様を印刷した印刷物を観察した場合、第２の視認性の複写防止模様の画線は、肉眼で識別できる。また、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線からなる定周期断絶線で構成しているため、第２の視認性の複写防止模様の画線を有した印刷物を複写機により複写すると、第２の視認性の複写防止模様の画線は複写機の走査線の特徴から基本線方向における前記所定の長さと同一の長さに相当する部分でより等しい濃度となり、第２の視認性の複写防止模様の画線は潜像を施さない部分の画線と同化がより顕著となり、第２の視認性の複写防止模様の画線が正確に再現されていないにもかかわらず、潜像を施さない部分の画線の実線の延長であるかのように認識されるため、肉眼では第２の視認性の複写防止模様の画線をより識別できない。
【００２７】
また、第１の視認性の複写防止模様の画線において、第１の視認性の複写防止模様の画線同士が交差する領域、第１の非視認性の複写防止模様の画線同士が交差する領域、第２の視認性の複写防止模様の画線同士が交差する領域、第２の非視認性の複写防止模様の画線において、前記画線同士が重なり合う部分の、何れか一方の画線を削除することにより、複写防止模様を全体で見た際、前記模様中の第１の視認性の複写防止模様の画線同士、第１の非視認性の複写防止模様の画線同士、第２の視認性の複写防止模様の画線同士、第２の非視認性の複写防止模様の画線同士が交差する領域では、画線に交差する領域が存在するように見えても、実際には潜像を施した部分の画線においては、画線の何れか一方を交差する領域で削除しているので、画線同士の交差（重なり）が存在していない。従って、前記画線同士が交差した領域に生じる画線の高濃度化を防止できる。これにより、本発明の画線構成を有した印刷物を複写機により複写すると、複写機の解像力から、前記第１の視認性の複写防止模様の画線同士が交差する（重なる）領域、第１の非視認性の複写防止模様の画線同士が交差する（重なる）領域、前記第２の視認性の複写防止模様の画線同士が交差する（重なる）領域、第２の非視認性の複写防止模様の画線同士が交差する（重なる）領域において、画線の何れか一方を交差する領域で削除しているので、高濃度化することがなく、第１及び第２の非視認性の複写防止模様の画線は再生されないか、若しくは再生不能になり、肉眼では第１及び第２の非視認性の複写防止模様の画線は背景色とほぼ同色となり、第１及び第２の非視認性の複写防止模様の画線が発現し、第１及び第２の視認性の複写防止模様の画線は、肉眼では潜像を施さない部分の画線と同化することを阻害することがない。よって第１及び第２の非視認性の複写防止模様の画線は一層明瞭に潜像が発現し、第１及び第２の視認性の複写防止模様の画線は潜像を施さない部分の画線との同化が肉眼ではより顕著となる。同様に第１の視認性の複写防止模様の画線、第１の非視認性の複写防止模様の画線、第２の視認性の複写防止模様の画線又は第２の非視認性の複写防止模様の画線のうち、少なくとも２つ以上の複写防止模様有した場合、前記複写防止模様の画線において、画線同士が交差する部分で、画線同士の何れか一方の画線を、画線同士が交差する領域で削除することにより、複写防止模様の画線が交差する（重なる）領域は、高濃度化することがなく、同様の効果が得られる。
【００２８】
さらに、潜像を施さない部分の画線と第１の視認性の複写防止模様の画線上の境界線、潜像を施さない部分の画線と第１の非視認性の複写防止模様の画線上の境界線、潜像を施さない部分の画線と第２の視認性の複写防止模様の画線上の境界線及び潜像を施さない部分の画線と第２の非視認性の複写防止模様の画線上の境界線を、基本線と潜像の輪郭線との交点において、前記基本線に対し略直角に交わる直線とし、併せて、第１の視認性の複写防止模様の画線上の画線部と非画線部の境界線、第１の非視認性の複写防止模様の画線上の画線部と非画線部の境界線、第２の視認性の複写防止模様の画線上の画線部と非画線部の境界線及び第２の非視認性の複写防止模様の画線上の画線部と非画線部の境界線との交点において、前記基本線に対し略直角に交わる直線とすることで、基本線の線形状に応じて、各々の境界線に異なる角度を付与できる。また、潜像を施さない部分の画線と第１の視認性の複写防止模様の画線上の境界線、潜像を施さない部分の画線と第１の非視認性の複写防止模様の画線上の境界線、潜像を施さない部分の画線と第２の視認性の複写防止模様の画線上の境界線、潜像を施さない部分の画線と第２の非視認性の複写防止模様の画線上の境界線、第１の視認性の複写防止模様の画線上の画線部と非画線部の境界線、第１の非視認性の複写防止模様の画線上の画線部と非画線部、第２の視認性の複写防止模様の画線上の画線部と非画線部の境界線及び第２の非視認性の複写防止模様の画線上の画線部と非画線部の境界線は、必ずしも互いに同一方向にならないので、潜像の輪郭線と複写防止模様の干渉を防止でき、肉眼による潜像の視認性、非視認性により有効に作用している。同様に第１の視認性の複写防止模様の画線、第１の非視認性の複写防止模様の画線、第２の視認性の複写防止模様の画線又は第２の非視認性の複写防止模様の画線のうち、少なくとも２つ以上の複写防止模様を有した場合、前記複写防止模様の画線上の境界線を、基本線と潜像の輪郭線との交点において、前記基本線に対し略直角に交わる直線とすることで、潜像の輪郭線と複写防止模様の干渉を防止でき、肉眼による潜像の視認性、非視認性により有効に作用している。
【００２９】
【実施例】
本発明の複写防止模様の画線構成を図によって説明する。本発明の画線構成による複写防止模様は、本来、図１に示すように潜像を施さない部分の画線（６）と、第１の非視認性の複写防止模様の画線（７）と、第１の視認性の複写防止模様の画線（８）との組み合わせによって構成されるものである。本発明の画線構成をより詳細に示すために図２及び図３を用いて説明する。図２は潜像を施さない部分の画線（６）と、第１の非視認性の複写防止模様の画線（７）の形状を表した拡大図（設計図）である。また、図３は潜像を施さない部分の画線（６）と第１の視認性の複写防止模様の画線（８）の形状を表した拡大図（設計図）である。
【００３０】
なお、本実施例は、潜像を施した部分の画線、すなわち、第１の非視認性の複写防止模様の画線（７）と、第１の視認性の複写防止模様の画線（８）を、基本線方向を基準とし等距離に３分岐した構成の複写防止模様の画線で説明しているが、本発明はこの実施例に限定されるものではない。
【００３１】
図２において、潜像を施さない部分の実線（１１）の基本線（１０）に対して直角方向の画線幅をＡ、第１の非視認性の複写防止模様の画線（７）の定周期断絶線の画線部の基本線（１０）を通る直角方向の画線幅をａ、基本線（１０）を基準に上下に等距離Ｈだけ離れた定周期断絶線の中心線（Ｈ２）に対して直角方向の画線幅をｂ、ｃ、画線幅ａに対しての基本線方向の長さをａ２、画線幅ｂに対しての基本線方向の長さをｂ２、画線幅ｃに対しての基本線方向の長さをｃ２とし、画線幅ａの定周期断絶線の非画線部の基本線方向の長さをａ３、画線幅ｂの定周期断絶線の非画線部の基本線方向の長さをｂ３、画線幅ｃの定周期断絶線の非画線部の基本線方向の長さをｃ３とする。第１の非視認性の複写防止模様の画線の定周期断絶線の連続した一つの画線部と非画線部からなる基本線方向の所定の長さをＢ、印刷した際に画線部の周囲に生じる膨張値（又は収縮値）をｇとする。ここで、本発明の画線構成による複写防止模様を印刷する場合、前述のような本発明の効果を奏するためには、潜像を施さない部分の実線（１１）と第１の非視認性の複写防止模様の画線（７）の定周期断絶線の画線面積が重要な要素となるから、印刷時の画線部における基本線（１０）に対して直角方向の画線幅と基本線方向の画線長さの変化を考慮することが好ましい。印刷物上において、潜像を施さない部分の実線（１１）の基本線（１０）に対して直角方向の画線幅はＡ＋ｇ＋ｇ、即ち、Ａ＋２ｇとなり、第１の非視認性の複写防止模様の画線（７）の定周期断絶線の画線部の基本線（１０）に対して直角方向の画線幅は、それぞれａ＋２ｇ、ｂ＋２ｇ、ｃ＋２ｇとなり、画線幅に対しての基本線方向の長さはａ２＋２ｇ、ｂ２＋２ｇ、ｃ２＋２ｇとなる。
【００３２】
本発明の作用及び効果を生じさせるためには、基本線方向における前記所定の長さの長さＢにおける、潜像を施さない部分の実線（１１）の領域面積Ｘと、第１の非視認性の複写防止模様の画線（７）の定周期断絶線の画線部Ｙ１、Ｙ２、Ｙ３の領域面積Ｚ１との関係が重要であり、ＸはＹ１、Ｙ２、Ｙ３の面積の総和であるＺ１と等しくならなければならない。詳細には、Ｙ１、Ｙ２、Ｙ３の画線面積の総和はＸより９５％〜１１０％の許容範囲にすることが好ましい。この許容範囲については、印刷時において第１の非視認性の複写防止模様の画線を肉眼で認識させることを防ぐ濃度であり、且つ、複写後に第１の非視認性の複写防止模様の画線が肉眼で背景色とほぼ同色となる範囲であり、インキの色相にもよるが領域面積が９５％〜１１０％であることが必要である。定周期断絶線の領域面積が９５％以下で作成された印刷物は、潜像を施さない部分の画線よりも領域面積は小さいので、第１の非視認性の複写防止模様の画線を肉眼で認識することが可能となり、肉眼で認識不可能にするには不十分である。
【００３３】
また、領域面積の上限が１１０％を越えない範囲とし、領域面積が１１０％以上になると潜像を施さない部分の画線と第１の非視認性の複写防止模様の画線を有する印刷物を複写機により複写した場合、第１の非視認性の複写防止模様の画線の濃度が下がらず、潜像を施さない部分の画線との濃度差がなく、第１の非視認性の複写防止模様の画線が肉眼で認識不可能となる。これは、印刷時における非視認性を確保するための許容範囲である。即ち、本発明の効果を奏する画線構成では画線設計の段階において、
【数１】

の関係を満足していることが好ましい。
【００３４】
図３において、潜像を施さない部分の実線（１１）の基本線（１０）に対して直角方向の画線幅をＡ、第１の視認性の複写防止模様の画線（８）の定周期断絶線の画線部の基本線（１０）を通る直角方向の画線幅をｄ、基本線（１０）を基準に上下に等距離Ｈだけ離れた定周期断絶線の中心線（Ｈ２）に対して直角方向の画線幅をｅ、ｆ、画線幅ｄに対しての基本線方向の長さをｄ２、画線幅ｅに対しての基本線方向の長さをｅ２、画線幅ｆに対しての基本線方向の長さをｆ２とし、画線幅ｄの定周期断絶線の非画線部の基本線方向の長さをｄ３、画線幅ｅの定周期断絶線の非画線部の基本線方向の長さをｅ３、画線幅ｆの定周期断絶線の非画線部の基本線方向の長さをｆ３とする。第１の視認性の複写防止模様の画線の定周期断絶線の連続した一つの画線部と非画線部からなる基本線方向の所定の長さをＢ、印刷した際に画線部の周囲に生じる膨張値（又は収縮値）をｇとする。ここで、本発明の画線構成による複写防止模様を印刷する場合、前述のような本発明の効果を奏するためには、潜像を施さない部分の実線（１１）と第１の視認性の複写防止模様の画線（８）の定周期断絶線の画線面積が重要な要素となるから、印刷時の画線部における基本線（１０）に対して直角方向の画線幅と基本線方向の画線長さの変化を考慮することが好ましい。印刷物上において、潜像を施さない部分の実線（１１）の基本線（１０）に対して直角方向の画線幅はＡ＋ｇ＋ｇ、即ち、Ａ＋２ｇとなり、第１の視認性の複写防止模様の画線（８）の定周期断絶線の画線部の基本線（１０）に対して直角方向の画線幅は、それぞれｄ＋２ｇ、ｅ＋２ｇ、ｆ＋２ｇとなり、画線幅に対しての基本線方向の長さはｄ２＋２ｇ、ｅ２＋２ｇ、ｆ２＋２ｇとなる。
【００３５】
本発明の作用及び効果を生じさせるためには、基本線方向における前記所定の長さの長さＢにおける、潜像を施さない部分の実線（１１）の領域面積Ｘと、第１の視認性の複写防止模様の画線（８）の定周期断絶線の画線部Ｙ４、Ｙ５、Ｙ６の領域面積Ｚ２との関係が重要であり、Ｙ４、Ｙ５、Ｙ６の面積の総和であるＺ２はＸより大きくなければならない。詳細には、Ｙ４、Ｙ５、Ｙ６の画線面積の総和はＸより１２０％〜１４０％の許容範囲であることが好ましい。この許容範囲については、印刷時において第１の視認性の複写防止模様の画線を肉眼ではっきりと認識させることができる濃度差であり、且つ、複写後に第１の視認性の複写防止模様の画線が潜像を施さない部分の実線（１１）と肉眼で同化する範囲であり、インキの色相にもよるが領域面積が１２０％以上であることが必要である。定周期断絶線の領域面積が１１０％〜１２０％で作成された印刷物は、潜像を施さない部分の画線よりも領域面積は大きいが、第１の視認性の複写防止模様の画線を肉眼で認識するには不十分である。
【００３６】
また、複写機により複写された印刷物は、潜像を施さない部分の画線よりも第１の視認性の複写防止模様の画線がポジティブに見えるものが、複写後はネガティブとなり、反転現象を起こすため、領域面積の上限は１４０％を越えない範囲とし、領域面積が１４０％以上になると潜像を施さない部分の画線と第１の視認性の複写防止模様の画線を有する印刷物を複写機により複写した場合、第１の視認性の複写防止模様の画線の濃度が下がらず、潜像を施さない部分の画線との濃度差があり、第１の視認性の複写防止模様の画線が肉眼で認識可能となる。これらを考慮した結果、本発明の効果を奏する画線構成では画線設計の段階において、
【数２】

の関係を満足していることが好ましい。
【００３７】
さらに、本発明の複写防止模様の画線構成は、直線又は曲線状の１本又は複数の画線からなる模様を形成する画線を、潜像を施さない部分の画線を実線、第１の非視認性の複写防止模様の画線を基本線方向に一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、第１の非視認性の複写防止模様の画線の定周期断絶線のうち、基本線方向に連続した一つの画線部と非画線部からなる所定の長さに相当する部分の画線面積が、潜像を施さない部分の実線のうち、基本線方向における前記所定の長さと同一の長さに相当する部分の画線面積と等しくなることを特徴としている。また、直線又は曲線状の１本又は複数の画線からなる模様を形成する画線を、潜像を施さない部分の画線を実線、第１の視認性の複写防止模様の画線を基本線方向に一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、第１の視認性の複写防止模様の画線の定周期断絶線のうち、基本線方向に連続した一つの画線部と非画線部からなる所定の長さに相当する部分の画線面積が、潜像を施さない部分の実線のうち、基本線方向における前記所定の長さと同一の長さに相当する部分の画線面積より大きくなることを特徴としている。印刷物上で、第１の非視認性の複写防止模様の画線の定周期断絶線の非画線部の基本線方向の長さをそれぞれａ３、ｂ３、ｃ３としたとき、図２に示すａ３、ｂ３、ｃ３は、複写機では解像されない範囲の２５μｍ〜６０μｍで設定すれば良い。同様に、印刷物上で、第１の視認性の複写防止模様の画線の定周期断絶線の非画線部の基本線方向の長さをそれぞれｄ３、ｅ３、ｆ３としたとき、図３に示すｄ３、ｅ３、ｆ３は、複写機では解像されない範囲の２５μｍ〜６０μｍで設定すれば良い。
【００３８】
図４（ａ）は第２の非視認性の複写防止模様からなる画線構成図であり、図２の第１の非視認性の複写防止模様の画線（７）の画線構成に対し、第２の非視認性の複写防止模様の画線においては１本の画線（７ａ）が他の分岐した２本の画線（７ｂ）及び（７ｃ）よりずれ（Ｓ）を有する。前記１本の画線（７ａ）のずれ（Ｓ）の値については、前記他の分岐した２本の基本線方向の長さ（ｂ２）もしくは（ｃ２）の値に近似すればするほど、第２の非視認性の複写防止模様の画線を有する印刷物を複写した場合、第２の非視認性の複写防止模様の画線は複雑化されているため、複写機の走査線での読み取りを困難にする効果が生まれる。その結果、潜像を施さない部分の画線（６）は忠実に再生されるが、第２の非視認性の複写防止模様の画線は背景色とほぼ同色となり、第２の非視認性の複写防止模様の発現し、より一層明瞭に肉眼で潜像が認識できる。
【００３９】
また、図４（ｂ）は第２の視認性の複写防止模様からなる画線構成図であり、図３の第１の視認性の複写防止模様の画線（８）の画線構成に対し、第２の視認性の複写防止模様の画線においては１本の画線（８ｄ）が他の分岐した２本の画線（８ｅ）及び（８ｆ）よりずれ（Ｓ）を有する。前記１本の画線（８ｄ）のずれ（Ｓ）の値については、前記領域面積を加味し、前記他の分岐した２本の基本線方向の長さ（ｅ２）もしくは（ｆ２）の値に近似すればするほど、第２の視認性の複写防止模様の画線を有する印刷物を複写した場合、第２の視認性の複写防止模様の画線は複雑化されているため、複写機の走査線での読み取りを困難にする効果が生まれる。その結果、潜像を施さない部分の画線（６）は忠実に再生されるが、第２の視認性の複写防止模様の画線は濃度が低下し、潜像を施さない部分の画線（６）とより等しい濃度となり、肉眼での潜像を施さない部分の画線（６）と第２の視認性の複写防止模様の画線の同化がより顕著となる。
【００４０】
さらに、図４（ａ）は第２の非視認性の複写防止模様からなる画線構成図であり、図２の第１の非視認性の複写防止模様の画線（７）の画線構成に対し、第２の非視認性の複写防止模様の画線においては１本の画線（７ａ）の画線部と非画線部からなる基本線方向の所定の長さをＴ、他の分岐した２本の画線（７ｂ）及び（７ｃ）の画線部と非画線部からなる基本線方向の所定の長さをＢとする。この場合、前記画線部と非画線部からなる基本線方向の所定の長さＢより前記画線部と非画線部からなる基本線方向の所定の長さＴを長周期で設定する。前記画線部と非画線部からなる基本線方向の所定の長さＴの値については、前記領域面積を加味できる範囲で最大限に長い周期で設定すればするほど潜像効果が向上する。第２の非視認性の複写防止模様の画線を有する印刷物を複写した場合、第２の非視認性の複写防止模様の画線は複雑化されているため、複写機の走査線での読み取りを困難にする効果が生まれる。その結果、潜像を施さない部分の画線（６）は忠実に再生されるが、第２の非視認性の複写防止模様の画線は背景色とほぼ同色となり、第２の非視認性の複写防止模様の発現し、より一層明瞭に肉眼で潜像が認識できる。より一層明瞭に第２の非視認性の複写防止模様の発現し、潜像が認識できる。
【００４１】
また、図４（ｂ）は、第２の視認性の複写防止模様からなる画線構成図であり、図３の第１の視認性の複写防止模様の画線（８）の画線構成に対し、第２の視認性の複写防止模様の画線においては１本の画線（８ｄ）の画線部と非画線部からなる基本線方向の所定の長さをＴ、他の分岐した２本の画線（８ｅ）及び（８ｆ）の画線部と非画線部からなる基本線方向の所定の長さをＢとする。この場合、前記画線部と非画線部からなる基本線方向の所定の長さＢより前記画線部と非画線部からなる基本線方向の所定の長さＴを長周期で設定する。前記画線部と非画線部からなる基本線方向の所定の長さＴの値については、前記領域面積を加味できる範囲で最大限に長い周期で設定すればするほど、第２の視認性の複写防止模様の画線を有する印刷物を複写した場合、第２の視認性の複写防止模様の画線は複雑化されているため、複写機の走査線での読み取りを困難にする効果が生まれる。その結果、潜像を施さない部分の画線（６）は忠実に再生されるが、第２の視認性の複写防止模様の画線は濃度が低下し、潜像を施さない部分の画線（６）とより等しい濃度となり、肉眼での潜像を施さない部分の画線（６）と第２の視認性の複写防止模様の画線の同化がより顕著となる。
【００４２】
本実施例では第２の非視認性の複写防止模様の画線及び第２の視認性の複写防止模様の画線においては１本の画線が他の分岐した２本の画線よりずれを有する画線、又は、１本の画線の画線部と非画線部からなる長さが異なる画線で説明しているが、本発明はこの実施例に限定されるものでなく、複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期であれば同じ様な潜像効果が現れる。
【００４３】
図５に示すように前記第１の非視認性の複写防止模様の画線（７）の画線部の画線同士が交差する領域で、前記画線（７）の画線部の何れか一方の画線（７）を削除する。また、前記第１の視認性の複写防止模様の画線（８）の画線部の画線同士が交差する領域で、前記画線（８）の画線部の何れか一方の画線（８）を削除する。また、前記第１の非視認性の複写防止模様の画線（７）と前記第１の視認性の複写防止模様の画線（８）の画線部の画線同士が交差する領域で、前記画線（７）又は（８）の何れか一方の画線（７）又は（８）を削除する。よって、本発明の複写防止模様を全体で見た際、前記模様中の曲線状の画線同士が交差する領域が存在するように見えても、実際には第１の非視認性の複写防止模様の画線（７）の画線部の画線同士、第１の視認性の複写防止模様の画線（８）の画線部の画線同士、第１の非視認性の複写防止模様の画線（７）の画線部と第１の視認性の複写防止模様の画線（８）の画線部の画線同士において交差（重なり）が存在しなくなる。従って、交差した部分に生ずる画線の高濃度化を防止できるようにしている。即ち、通常該模様の作成時には図６のように、第１の非視認性の複写防止模様の画線（７）の定周期断絶線の画線同士、第１の視認性の複写防止模様の画線（８）の定周期断絶線の画線同士、第１の非視認性の複写防止模様の画線（７）の定周期断絶線の画線部と第１の視認性の複写防止模様の画線（８）の定周期断絶線の画線は完全に交差した状態となっているが、図５のように、画線同士が交差する領域で何れか一方の画線を削除する。これにより、本発明の画線構成を有した印刷物を複写機により複写すると、複写機の解像力から、潜像を施さない部分の画線は忠実に再生されるが、第１の非視認性の複写防止模様の画線は再生されないか、もしくは再生不良により、背景色とほぼ同色となり、第１の非視認性の複写防止模様の画線と潜像を施さない部分の実線に濃度差が生じるだけでなく、肉眼での潜像の発現を阻害すること無く、より一層明瞭に第１の非視認性の複写防止模様の画線が発現する。また、潜像を施さない部分の画線は忠実に再生されるが、第１の視認性の複写防止模様の画線は濃度が低下するので、第１の視認性の複写防止模様の画線は潜像を施さない部分の画線とより等しい濃度となり、肉眼での潜像を施さない部分の画線と第１の視認性の複写防止模様の画線の同化がより顕著となる。
【００４４】
本発明はこの実施例に限定されるものでなく、第１の視認性の複写防止模様の画線、第１の非視認性の複写防止模様の画線、第２の視認性の複写防止模様の画線又は第２の非視認性の複写防止模様の画線のうち、少なくとも２つ以上の複写防止模様の画線を有した場合、画線同士が交差する部分で、前記画線同士の何れか一方の画線を、画線同士が交差する領域で削除することにより、同様の効果が得られる。
【００４５】
また、従来開示されている複写防止用印刷物は、網点若しくは万線等におけるスクリーンパターンの粗密によって潜像が施されているため、複写防止模様を形成する各々の画線の、潜像を施さない部分の画線と潜像を施した部分の画線上の境界線の方向が、潜像を施さない部分と潜像を施した部分の境界部において、同一方向に規則性を持ってしまうために干渉が生じ、潜像が目視で視認されてしまうことから、カムフラージ模様を用いらざるを得ない一要因となっていたが、本発明の画線構成は、複写防止模様における潜像の非視認性を高める方法として、図７に示すように、潜像を施さない部分の実線（６）と、第１の非視認性の複写防止模様の画線（７）の定周期断絶線の境界線（９ａ）を、基本線（１０）と潜像の輪郭線（１２）との交点（１３ａ）において、前記基本線（１０）に対し、略直角に交わる直線（９ａ）とする。また、潜像を施さない部分の実線（６）と、第１の視認性の複写防止模様の画線（８）の定周期断絶線の境界線（９ｂ）を、基本線（１０）と潜像の輪郭線（１２）との交点（１３ｂ）において、前記基本線（１０）に対し、略直角に交わる直線（９ｂ）とする。併せて、第１の非視認性の複写防止模様の（７）画線の定周期断絶線上の画線部と非画線部の境界線（９ｃ）を、基本線（１０）と第１の非視認性の複写防止模様の画線（７）の定周期断絶線上の画線部と非画線部の境界線（９ｃ）との交点（１３ｃ）において、前記基本線（１０）に対し、略直角に交わる直線（９ｃ）としている。また、第１の視認性の複写防止模様の画線（８）の定周期断絶線上の画線部と非画線部の境界線（９ｄ）を、基本線（１０）と第１の非視認性の複写防止模様の画線（８）の定周期断絶線上の画線部と非画線部の境界線（９ｄ）との交点（１３ｄ）において、前記基本線（１０）に対し略直角に交わる直線（９ｄ）としている。上記に示すように略直角に交わる直線としているので、潜像を施さない部分の実線（６）と第１の非視認性の複写防止模様の画線（７）の定周期断絶線の境界線（９ａ）と、潜像の輪郭線（１２）、及び潜像を施さない部分の実線（６）と第１の視認性の複写防止模様の画線（８）の定周期断絶線の境界線（９ｂ）と、潜像の輪郭線（１２）とは同一方向に規則性を持たなくすることができる。よって、本発明による画線構成を用いた複写防止模様を印刷した場合、潜像を施さない部分の実線（６）、第１の非視認性の複写防止模様の画線（７）の定周期断絶線の画線部、第１の視認性の複写防止模様の画線（８）の定周期断絶線の画線部、潜像の輪郭線（１２）、第１の非視認性の複写防止模様の画線（７）の定周期断絶線上の画線部と非画線部の境界線（９ｃ）及び第１の視認性の複写防止模様の画線（８）の定周期断絶線上の画線部と非画線部の境界線（９ｄ）の相互間における干渉を防止できる。
【００４６】
また、本発明はこの本実施例に限定されるものでなく、本発明は第１の非視認性の複写防止模様の画線（７）と第１の視認性の複写防止模様の画線（８）の輪郭線を基本線（１０）と潜像の輪郭線（１２）との交点において、前記基本線（１０）に対し略直角に交わる直線とすることで同様の効果が得られる。また、第１の視認性の複写防止模様の画線（８）、第１の非視認性の複写防止模様の画線（８）、第２の視認性の複写防止模様の画線又は第２の非視認性の複写防止模様の画線うち、少なくとも２つ以上の複写防止模様の画線を有した場合、画線上の境界線を、基本線（１０）と潜像の輪郭線（１２）との交点において、前記基本線（１０）に対し略直角に交わる直線とすることで潜像の輪郭線（１２）と複写防止模様の干渉を防止できる。
【００４７】
本発明の実施例をさらに詳細に説明する。一般的に彩紋模様は、図案に従い数学関数上で描画した模様であるため、前記模様を作成する装置としては、歯車、カム等の機械的動作によって描画する装置と、コンピュータを用いて二次元座標上の関数により描画する装置とがあるが、本実施例においては市販のコンピュータ・グラフィック・デザイン装置（以下ＣＧＳという。）を用いた例で説明する。
【００４８】
本発明においては、前述したように印刷時の画線の膨張値（又は収縮値）を加味して、製版時における画線設計を行うため、予め膨張値（又は収縮値）をテスト画線で調査した。テスト画線として、製版用フィルム原版上の画線幅を１００μｍとし、用紙に市販の上質紙を用い、インキも市販のオフセットインキ（ピンク）でオフセット印刷を行った後、前記印刷物の画線幅を測定した結果、１０６μｍと計測されたので、画線幅方向の画線の膨張値は全体で６μｍであり、印刷をした際の画線周囲に生じる膨張値（又は収縮値）ｇは３μｍであることがわかった。
【００４９】
前記テスト画線により得られた画線周囲に生じる膨張値３μｍの値を用いて、本発明の画線構成により、潜像を施さない部分の実線の基本線に対して直角方向の印刷画線幅が１０６μｍとなる１本又は複数の画線からなる模様印刷物を得るための刷版を作製した。まず市販のＣＧＳを用い、図８に示すような１本又は複数の画線からなる模様を構成する基本をなすスプライン曲線からなる基本線（１８）は緩やかな波状の線であり、このスプライン曲線からなる基本線（１８）を二次元座標上に設定し、３００μｍの間隔で平行に送り、第１の非視認性の複写防止模様の図形（１４）と第１の視認性の複写防止模様の図形（１５）を、スプライン曲線からなる基本線（１８）上に配置した。なお、第１の非視認性の複写防止模様の図形（１４）は、通常は肉眼で認識できない第１の非視認性の複写防止模様の画線を施すための図形であり、第１の視認性の複写防止模様の図形（１５）は通常は肉眼で認識できるが複写機にかけると周囲の模様と同化する第１の視認性の複写防止模様の画線を施すための図形である。本発明の印刷物が不心得者により複写機によって複製された場合に、目視によって明瞭に識別できるものであれば、文字、数字、図形等の何れをも問わない。
【００５０】
潜像を施さない部分の画線（６）と第１の非視認性の複写防止模様の画線（７）の境界は、図８に示すように、第１の非視認性の複写防止模様の画線の輪郭線（１６）でスプライン曲線からなる基本線（１８）を切断し、第１の非視認性の複写防止模様の図形（１４）で囲まれた画線を集め、スプライン曲線からなる基本線（１８）の中心線を基準に上下に等距離８０μｍに画線を設ける。同様に潜像を施さない部分の画線（６）と第１の視認性の複写防止模様の画線（８）の境界は、図８に示すように、第１の視認性の複写防止模様の画線の輪郭線（１７）でスプライン曲線からなる基本線（１８）を切断し、同様に第１の視認性の複写防止模様の図形（１５）で囲まれた画線を集め、スプライン曲線からなる基本線（１８）の中心線を基準に上下に等距離８０μｍに画線を設ける。これらスプライン曲線を用いて画線幅ならびに定周期断絶線の数値を代入する。中心線を基準に等距離に上下に８０μｍの距離に画線を設けた理由については、スプライン曲線からなる基本線（１８）を３００μｍに設定したので、定周期断絶線の画線同士が重ならない程度の間隔とするので、スプライン曲線からなる基本線（１８）の間隔によって値も変わってくる。
【００５１】
まず実施例で作成しようとしている複写防止模様では、前記図２及び前記図３における潜像を施さない部分の実線（１１）の基本線（１０）に対して直角方向の印刷画線幅を１０６μｍとし、画線設計上の画線幅Ａを、前述のテスト画線で把握した画線幅方向の画線の膨張値（３＋３）μｍを差し引いた１００μｍと設定した。
【００５２】
次に、第１の非視認性の複写防止模様の画線の設定、即ち、図２における第１の非視認性の複写防止模様の画線（７）の定周期断絶線の画線部の基本線（１０）に対して直角方向の画線幅ａ、ｂ、ｃと、第１の非視認性の複写防止模様の画線の定周期断絶線の画線部の基本線方向の長さａ２、ｂ２、ｃ２と、第１の非視認性の複写防止模様の画線の定周期断絶線の非画線部の基本線方向の長さａ３、ｂ３、ｃ３を設定することが必要である。まず、印刷物上における第１の非視認性の複写防止模様の画線の定周期断絶線の画線部の基本線方向の長さａ２＋２ｇ、ｂ２＋２ｇ、ｃ２＋２ｇについては、潜像が肉眼で視認されず、且つ、複写機で解像されないことが必要であるから、一般的な複写機の出力解像度を４００ｄｐｉとすると１画素は６４μｍであるから、解像されにくい長さの目安として６４μｍ以下が適しており、本実施例では第１の非視認性の複写防止模様の画線はａ＋２ｇを５６μｍ、ｂ＋２ｇを５６μｍ、ｃ＋２ｇを５６μｍとし、基本線（１０）を基準に上下に等距離にしたＨを定周期断絶線の画線同士の重なり合いを防ぐために８０μｍとし、ａ２＋２ｇを５６μｍ、ｂ２＋２ｇを５６μｍ、ｃ２＋２ｇを５６μｍ、次に非画線部の基本線方向の長さを、潜像が肉眼で認識されず、且つ、複写機で解像されない範囲の２５μｍ〜６０μｍが可能であるが、本実施例ではａ３は３１μｍ、ｂ３は３１μｍ、ｃ３は３１μｍとした。従って、テスト画線で把握した基本線方向の画線の膨張値（３＋３）μｍを差し引くことにより、ａは５０μｍ、ｂは５０μｍ、ｃは５０μｍ、ａ２は５０μｍ、ｂ２は５０μｍ、ｃ２は５０μｍとなる。Ｂの長さは非画線部３１μｍから膨張値（３＋３）μｍを引いた値に画線部の長さ５６をたしたものであり、即ち、（３１−６）＋５６＝８１となる。これを前記数式（１）に代入すると、
０．９５×８１×１０６≦５６×５６＋５６×５６＋５６×５６≦１．１×８１×１０６であり、計算をすると、８１５６．７≦９４０８≦９４４４．６となり関係範囲を満足しているのがわかる。
【００５３】
本実施例では第１の非視認性の複写防止模様の画線は３分岐した定周期断絶線を３分岐とも同じ面積で、且つ、同じ周期で説明しているが、本発明はこの実施例に限定されるものでなく、第１の非視認性の複写防止模様の画線は潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線がそれぞれ一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における前記所定の長さと同一の長さに相当する部分の画線面積と等しければ、複数に分岐したそれぞれの面積が異なっていても良い。また、２分岐した定周期断絶線でも同じ様な潜像効果が現れる。また、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線の第２の非視認性の複写防止模様を用いれば、より潜像効果が向上する。
【００５４】
次に、第１の視認性の複写防止模様の画線の設定、即ち、図３における第１の視認性の複写防止模様の画線（８）の定周期断絶線の画線部の基本線（１０）に対して直角方向の画線幅ｄ、ｅ、ｆと、第１の視認性の複写防止模様の画線の定周期断絶線の画線部の基本線方向の長さｄ２、ｅ２、ｆ２と、第１の視認性の複写防止模様の画線の定周期断絶線の非画線部の基本線方向の長さｄ３、ｅ３、ｆ３を設定することが必要である。まず、印刷物上における第１の視認性の複写防止模様の画線の定周期断絶線の画線部の基本線方向の長さｄ２＋ｇ＋ｇ、ｅ２＋ｇ＋ｇ、ｆ２＋ｇ＋ｇについては、潜像が肉眼で視認でき、且つ、複写機で解像されないことが必要であるから、一般的な複写機の出力解像度を４００ｄｐｉとすると１画素は６４μｍであるから、解像されにくい長さの目安として６４μｍ以下が適しており、本実施例では第１の視認性の複写防止模様の画線はｄ＋ｇ＋ｇを７６μｍ、ｅ＋ｇ＋ｇを７６μｍ、ｆ＋ｇ＋ｇを７６μｍとし、基本線（１０）を基準に上下に等距離にしたＨを定周期断絶線の画線同士の重なり合いを防ぐために８０μｍとし、ｄ２＋ｇ＋ｇを５１μｍ、ｅ２＋ｇ＋ｇを５１μｍ、ｆ２＋ｇ＋ｇを５１μｍ、次に非画線部の基本線方向の長さを、潜像が肉眼で認識されず、且つ、複写機で解像されない範囲の２５μｍ〜６０μｍが可能であるが、本実施例ではｄ３は３６μｍ、ｅ３は３６μｍ、ｆ３は３６μｍとした。従って、テスト画線で把握した基本線方向の画線の膨張値（３＋３）μｍを差し引くことにより、ｄは７０μｍ、ｅは７０μｍ、ｆは７０μｍ、ｄ２は４５μｍ、ｅ２は４５μｍ、ｆ２は４５μｍとなる。Ｂの長さは非画線部３６μｍから膨張値（３＋３）μｍを引いた値に画線部の長さ５１をたしたものであり、即ち、（３６−６）＋５１＝８１となる。これを前記数式（２）に代入すると、
１．２×８１×１０６≦７６×５１＋７６×５１＋７６×５１≦１．４×８１×１０６であり、計算をすると、１０３０３．２≦１１６２８≦１２０２０．４となり関係範囲を満足しているのがわかる。
【００５５】
なお、本実施例で用いた数値は、これに限定されるものでなく必要に応じて変更が可能である。
【００５６】
本実施例では第１の非視認性の複写防止模様の画線は３分岐した定周期断絶線を３分岐とも同じ面積で、且つ、同じ周期で説明しているが、本発明はこの実施例に限定されるものでなく、第１の非視認性の複写防止模様の画線は潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線がそれぞれ一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における前記所定の長さと同一の長さに相当する部分の画線面積と等しければ、複数に分岐したそれぞれの面積が異なっていても良い。
第１の視認性の複写防止模様の画線は前記第１の非視認性の複写防止模様の画線と同様に、３分岐した定周期断絶線を３分岐とも同じ面積で、且つ、同じ周期で説明しているが、本発明はこの実施例に限定されるものでなく、第１の視認性の複写防止模様の画線は潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線がそれぞれ一定の間隔で配列された形状の画線からなる定周期断絶線で構成し、潜像を施した部分の定周期断絶線のうち、基本線方向に分岐した画線部と非画線部からなる所定の長さに相当する部分の画線面積の総和が、潜像を施さない部分の実線のうち、基本線方向における前記所定の長さと同一の長さに相当する部分の画線面積より大きければ、複数に分岐したそれぞれの面積が異なっていても良い。また、第１の非視認性の複写防止模様の画線及び第１の視認性の複写防止模様の画線は２分岐した定周期断絶線でも同じ様な効果が現れる。さらに、潜像を施した部分の画線を基本線方向を基準とし等距離に複数に分岐し、前記複数に分岐した画線のうち、少なくとも１本以上の画線が他の分岐した画線と異なる周期で配列された形状の画線の第２の非視認性の複写防止模様又は第２の視認性の複写防止模様を用いれば、より潜像効果が向上する。
【００５７】
ＣＧＳで設計された複写防止模様は市販のレーザープロッターを用いて製版用フィルム原版を作成し、次に、市販のポジタイプＰＳ版で刷版を作製し、得られた刷版を用い、市販の上質紙上に、市販のオフセットインキ（ピンク）で、印刷機器の調整は一般の平版オフセット印刷に等しく、特別に調整することなくオフセット印刷を行い、図９に示すの印刷物を得る。
【００５８】
図９の印刷物を目視で観察した場合、観察者には潜像を施した部分の画線である第１の非視認性の複写防止模様の画線（７）が定周期断絶線であるにもかかわらず、基本線方向に連続した１本の画線であるかのように認識されることにより、肉眼では第１の非視認性の複写防止模様の画線はまったく識別できなくすることを可能にしている。また、第１の視認性の複写防止模様の画線（８）は肉眼では、潜像を施さない部分の画線（６）よりも濃度が濃いので第１の視認性の複写防止模様の画線は認識できる。従って、第１の非視認性の複写防止模様の画線（７）において、観察者は印刷画線の拡大視を試みない限り、第１の非視認性の複写防止模様の画線（７）の存在をまったく視認することができず、第１の視認性の複写防止模様の画線（８）は、定周期断絶線であるが、拡大視を試みない限り、１本の太い画線で有るかのように認識され、一見すると第１の視認性の複写防止模様の画線（８）と潜像を施さない部分の画線（６）の印刷物に見える。
【００５９】
図１０は、本発明の印刷物図９を、カラー複写機（例えば、キャノンＣＬＣ９００型、リコーＰＡＴＥＲ７５０型、ミノルタＣＦ９００）によって複製した複製物を示したものである。図９に示す第１の非視認性の複写防止模様の画線（７）に対置する図１０の複写した第１の非視認性の複写防止模様の画線（７'）は、複写機で再生不能となり、第１の非視認性の複写防止模様の画線（７'）と潜像を施さない部分の画線（６'）に濃度差が生じ、第１の非視認性の複写防止模様の画線（７'）は背景色とほぼ同色となり、第１の非視認性の複写防止模様の画線（７'）が発現しているように肉眼で認識できる。また、図９に示す第１の視認性の複写防止模様の画線（８）に対置する図１０の複写した第１の視認性の複写防止模様の画線（８'）は、潜像を施さない部分の画線（６'）と濃度差が同一となり、第１の視認性の複写防止模様の画線（８'）は潜像を施さない部分の画線（６'）の画線のように肉眼で認識され、第１の視認性の複写防止模様の画線（８'）は、肉眼でまったく識別できなくなっている。よって、複写機を用いた複製物であることが一目瞭然であり、真偽判別が可能となる。
【００６０】
【発明の効果】
本発明では、前述のとおり、第１の非視認性の複写防止模様及び第１の視認性の複写防止模様は画線部を細分化しているため、潜像を施さない部分の画線と第１の非視認性の複写防止模様の画線及び第１の視認性の複写防止模様の画線で形成した印刷物を複写機で複写した場合、潜像が発現及び潜像を施さない部分の画線との同化を一層明瞭にすることができる。
【００６１】
さらに、第１の非視認性の複写防止模様及び第１の視認性の複写防止模様の細分化された画線の周期を少なくとも１本以上異なる周期とすることにより、潜像の発現及び潜像を施さない部分の画線との同化をより一層明瞭にできる。
【００６２】
さらに、非視認性の複写防止模様及び視認性の複写防止模様を同時に一枚の印刷物に組み入れた構成にすることにより、非視認性の複写防止模様の画線は肉眼ではまったく識別できず、複写機で複写した場合に非視認性の複写防止模様の画線が忠実に再生されず、潜像が発現し、また、視認性の複写防止模様の画線は複写前は識別できるが、複写機により複写した場合に潜像を施さない部分の画線と同化する。このように複写機で複写した場合の非視認性の複写防止模様の画線と視認性の複写防止模様の画線の複写物の目視状態の違いにより視覚的に印象が強い変化をもたらし、複写物である判別が容易となり、複写機による偽造、変造の防止効果を有する。
【００６３】
さらに、単色印刷で容易に印刷できるのでコストも低減でき、あえてカムフラージ模様を重ね刷りする必要がない。印刷時の濃度管理や画線太り等の調整が容易であり、印刷での許容範囲が広くても複写防止効果を有する。
【００６４】
さらに、地紋、彩紋模様にモアレ模様等の他種の偽造防止策を同一画線上に併用した印刷物も可能であり、印刷後にエンボス（凸凹）を付与しても複写防止効果が低下することがない。その結果、本発明は、複写機による偽造、変造防止の対象である銀行券、株券、債券等の有価証券や、各種証明書及び重要書類等に採用することができる。
【図面の簡単な説明】
【図１】本発明の複写防止模様及び一部拡大図。
【図２】潜像を施さない部分の画線と第１の非視認性の複写防止模様の画線の拡大図。
【図３】潜像を施さない部分の画線と第１の視認性の複写防止模様の画線の拡大図。
【図４】第２の非視認性の複写防止模様を施した部分の画線又は第２の視認性の複写防止模様を施した部分の画線の画線構成
【図５】第１の視認性と第１の非視認性の複写防止模様の画線の定周期断絶線の画線部の画線同士が交差する領域の説明図。
【図６】第１の視認性と第１の非視認性の複写防止模様の画線の定周期断絶線の画線部の画線同士が交差する領域の説明図。
【図７】基本線と潜像の輪郭線との交点又は定周期断絶線上の画線部と非画線部の境界線との交点において、基本線に対し、略直角に交わる直線とする説明図。
【図８】本発明の複写防止模様の二次元データ上の画線構成図及び一部拡大図。
【図９】本発明の複写防止模様を有する印刷物を示す図。
【図１０】本発明の複写防止模様を施した印刷物の複製物を示す図。
【図１１】従来の複写防止用印刷物の模様及び前記模様の一部拡大図。
【図１２】従来の複写防止用印刷物の複写物の模様及び前記模様の一部拡大図。
【符号の説明】
１従来の複写防止用印刷物
２印刷面全体の模様
３印刷物上の再生されない密構成のスクリーンパターン
３’ 複写物上の再生されない密構成のスクリーンパターン
４印刷物上の再生される粗構成のスクリーンパターン
４’ 複写物上の再生される粗構成のスクリーンパターン
５潜像の境界線との干渉部
６潜像を施さない部分の画線
７第１の非視認性の複写防止模様を施した部分の画線
８第１の視認性の複写防止模様を施した部分の画線
９ａ第１の非視認性の複写防止模様の画線の定周期断絶線の境界線
９ｂ第１の視認性の複写防止模様の画線の定周期断絶線の境界線
９ｃ第１の非視認性の複写防止模様の画線の定周期断絶線上の画線部と非画線部の境界線
９ｄ第１の視認性の複写防止模様の画線の定周期断絶線上の画線部と非画線部の境界線
１０基本線
１１潜像を施さない部分の実線
１２潜像の輪郭線
１３ａ基本線と潜像の輪郭線との交点
１３ｂ基本線と潜像の輪郭線との交点
１３ｃ第１の非視認性の複写防止模様の画線上の画線部と非画線部の境界線と基本線との交点
１３ｄ第１の視認性の複写防止模様の画線上の画線部と非画線部の境界線と基本線との交点
１４第１の非視認性の複写防止模様の図形
１５第１の視認性の複写防止模様の図形
１６第１の非視認性の複写防止模様の画線の輪郭線
１７第１の視認性の複写防止模様の画線の輪郭線
１８スプライン曲線からなる波万線状の基本線
Ａ潜像を施さない部分の実線の基本線に対して直角方向の画線幅
Ｂ第１の視認性及び第１の非視認性の複写防止模様の定周期断絶線の基本線方向の所定の長さ
Ｈ基本線を基準とした等距離の長さ
Ｈ２ｂ、ｃ、ｅ、ｆの長さの中心線
Ｔ異なる周期
Ｓずれ
ａ第１の非視認性の複写防止模様の定周期断絶線の画線部の基本線に対して直角方向の長さ
ｂ第１の非視認性の複写防止模様の基本線（１０）を基準に等距離Ｈを中心線（Ｈ２）とした定周期断絶線の画線部に対して直角方向の画線幅
ｃ第１の非視認性の複写防止模様の基本線（１０）を基準に等距離Ｈを中心線（Ｈ２）とした定周期断絶線の画線部に対して直角方向の画線幅
ｄ第１の視認性の複写防止模様の定周期断絶線の画線部の基本線に対して直角方向の長さ
ｅ第１の視認性の複写防止模様の基本線（１０）を基準に等距離Ｈを中心線（Ｈ２）とした定周期断絶線の画線部に対して直角方向の画線幅
ｆ第１の視認性の複写防止模様の基本線（１０）を基準に等距離Ｈを中心線（Ｈ２）とした定周期断絶線の画線部に対して直角方向の画線幅
ａ２第１の非視認性の複写防止模様の画線ａの基本線方向の長さ
ｂ２第１の非視認性の複写防止模様の画線ｂの基本線方向の長さ
ｃ２第１の非視認性の複写防止模様の画線ｃの基本線方向の長さ
ｄ２第１の視認性の複写防止模様の画線ｄの基本線方向の長さ
ｅ２第１の視認性の複写防止模様の画線ｅの基本線方向の長さ
ｆ２第１の視認性の複写防止模様の画線ｆの基本線方向の長さ
ａ３ａに対して第１の非視認性の複写防止模様の定周期断絶線の非画線部の基本線方向の長さ
ｂ３ｂに対して第１の非視認性の複写防止模様の定周期断絶線の非画線部の基本線方向の長さ
ｃ３ｃに対して第１の非視認性の複写防止模様の定周期断絶線の非画線部の基本線方向の長さ
ｄ３ｄに対して第１の視認性の複写防止模様の定周期断絶線の非画線部の基本線方向の長さ
ｅ３ｅに対して第１の視認性の複写防止模様の定周期断絶線の非画線部の基本線方向の長さ
ｆ３ｆに対して第１の視認性の複写防止模様の定周期断絶線の非画線部の基本線方向の長さ
ｇ画線周囲に生じる膨張値（又は収縮値）[0001]
BACKGROUND OF THE INVENTION
  The present invention has a function of discriminating a copy when it is copied by a copying machine in a printed matter that needs to prevent forgery or alteration of securities such as banknotes, stock certificates, bonds, etc., various certificates and important documents. The present invention relates to a method for creating an anti-copying pattern to be applied and a printed product thereof.
[0002]
[Prior art]
  Countermeasures against counterfeiting and alteration are important factors in banknotes, stock certificates, securities such as bonds, printed materials such as various certificates and important documents. These measures to prevent counterfeiting and tampering of printed materials are mainly methods that use designs with diversified geometric patterns in the design, and if some means and action are applied to the printed materials, latent images that could not be visually recognized appear. There are methods. Typical examples of the former include tint blocks, chromatic patterns, and relief patterns that are widely used in the design of securities prints, etc., while the latter are typical examples of latent image intaglios and color reproduction with copiers. There are functional inks and copy prevention image lines that are not used. However, with the recent widespread use of color copiers, there is a risk that crimes due to counterfeiting and alteration will increase, and the development of technology has been desired as a more effective counterfeiting and alteration prevention measure.
[0003]
  Examples of counterfeiting and alteration prevention using the geometric pattern include a background pattern, a chromatic pattern, a relief pattern, etc., and the pattern is basically constituted by a set of curved lines with a fixed line width. . These patterns take into account the design of printed matter, etc., and can take measures to prevent forgery and alteration, making it difficult to create the same pattern in counterfeit by making the pattern complicated. The role of anti-counterfeiting is enhanced by extracting with a plate-making device, using colors that are difficult to reproduce on a copying machine, or generating moiré for scanning input / output of copying machines and scanners by creating complex curved lines. ing. The patterns are widely used worldwide in the design of securities prints, etc., and at the same time have been used for a long time as patterns of printed matter having monetary value such as banknotes, stock certificates, bonds, etc. It has become an important design as a design that gives an impression of luxury. Therefore, in the printed matter such as banknotes, stock certificates, securities such as bonds, various certificates and important documents, the background pattern, the color pattern, the relief pattern, etc. are indispensable in design. However, recently, there is a drawback in that the effect of preventing forgery and alteration is not sufficiently brought about by the advent of sophisticated photoengraving apparatuses or copying machines.
[0004]
  In addition, as a representative technique of a method for displaying a latent image that could not be visually recognized by applying any means and action to the printed matter, a series of generally referred to as copy prevention image lines is used. There is technology. That is, by copying with a copying machine, the latent image applied in the printed matter appears. In such a printed material suitable for counterfeiting by a copying machine, a latent image displaying characters composed of fine constituent elements, for example, 85 lines and 30% halftone dots, is printed on the base paper surface using silver ink, and then Printing is performed on a blank area other than the latent image with a halftone dot that is coarser or denser (for example, 150 lines 30%) than the latent image, and a printed pattern such as a colored pattern or a background pattern is applied to the upper surface of the latent image. There is a latent image-containing print suitable for forgery prevention by copying (Japanese Patent Laid-Open No. 57-20395), and the latent image is printed on the surface of the paper with halftone dots, and the background of the same density as the latent image is simultaneously printed on the lines. By printing and overprinting the decorative pattern on the upper surface of the latent image, including the background, with a light-colored transparency ink that cannot be reproduced by copying, the surface of the printed material is finished nicely. Is reproduced and the latent image is not reproduced There is a printed material suitable for copy prevention (Japanese Patent Laid-Open No. 60-79991) that can be seen at a glance that the density difference between the background and the latent image is a copied material. A latent image plate having a background consisting of 10 to 10% lines of 50 to 60 lines on a white ground around the latent image is printed with dark color on the surface of the paper, Using the overprint plate with a corrugated pattern consisting of parallel lines that form moire patterns when interfering with the lines, the surface of the printed material is exposed to the naked eye by applying a light overprint that cannot be reproduced by a copier on the paper surface. Since a dazzling moire pattern is formed, it is difficult to identify the presence of a latent image. When it is applied to a copier, the latent image and waveform pattern are not reproduced, but only the background is reproduced. In printed materials Copy prevention latent image Kamufuraji method (JP 60-87380 JP) and the like have been disclosed.
[0005]
  In the printed matter according to the above publication, a latent image is formed by the density of an image line group (hereinafter referred to as a screen pattern) in which dots and lines such as halftone dots or lines are continuously arranged at a constant period. As shown in (1), the pattern (2) on the entire printed surface is a screen pattern having a uniform density. When the printed matter (1) on which the latent image has been applied is copied by a copying machine, the densely structured screen pattern (3) which is not reproduced and the reproduced coarsely structured screen pattern (4) are shown in FIG. As shown in the pattern (2 ′) of (1 ′), a latent image of a dense screen pattern (3 ′) that is not reproduced with respect to the reproduced coarse screen pattern (4 ′) due to a density difference. The part appears and it is made clear that it is a copy, but the entire printed surface has a uniform screen density, so it is visible on the same printed surface even with the naked eye. Disadvantage that the presence of the latent image can be identified by the different screen pattern due to the difference between the screen shapes and the interference part (5) with the boundary line of the latent image caused by the screen pattern. A.
[0006]
  Therefore, as a method for solving the above-mentioned drawbacks, each of the above publications and the like uses a different pattern, light-colored transparent ink, and light-color overprint to camouflag the latent image, but the method identifies the latent image. Although effective in making it difficult to perform, there is a disadvantage that the number of steps increases and it is not economical.
[0007]
  In addition, since all of the above-described prior art methods must be screen patterns composed of dots and lines such as halftone dots or lines, banknotes, stock certificates, bonds etc. There is a drawback that it is not suitable for use in existing products such as securities.
[0008]
  In addition, the applicant of the present application is a printed matter in which a latent image composed of a pattern such as a halftone dot or a line on the surface of a sheet and a background composed of a pattern different in density from the latent image around the latent image are simultaneously printed in one color. As a printed matter suitable for copy prevention (Japanese Patent Application Laid-Open No. 4-170569), the latent image pattern on which the latent image is applied cannot be identified with the naked eye. We have already filed a method for camouflaging with transparent ink, and even with light-colored overprinting, with a white circular pattern or a concentric circle pattern with an increased percentage of halftone dots of the partial screen pattern relative to the entire screen pattern. However, as described above, since all of the above-described conventional techniques provide a latent image with a screen pattern, it is easy to visually recognize the latent image. Since the information such as the characters to be played must play the role of camouflage, it can be used only for the background pattern of the characters and other backgrounds, and the monochrome printed line pattern with the latent image can be freely used as if it were a colored pattern. However, it has been disadvantageous in that it cannot be made into a designed pattern or an artistic print with a decorative effect. Furthermore, since all of the above prior art methods must be screen patterns consisting of dots and lines such as halftone dots or lines, etc., such as banknotes, stock certificates, bonds, etc. that have a variety of background patterns and colored patterns. There was a disadvantage that it was not suitable for use in existing products of securities.
[0009]
  Therefore, in order to solve these drawbacks, the applicant of the present application expresses a set of curved lines with a single line where a latent image is not applied and a portion where a latent image is applied with two or more lines. Branches from one line where no latent image is applied so that the total line width of the two or more lines where the part has been subjected to is equal to the line width of the single line where the latent image is not applied The boundary line on the image line between the part where the latent image is not applied and the part where the latent image is applied is a straight line which intersects at a substantially right angle with the straight line which contacts the intersection of the basic line constituting the pattern and the contour line of the latent image. Yes, in the image line that is a set of two or more lines of the portion where the latent image is applied, the image lines for each set intersect, and the image lines for each set are both A method for creating an anti-copying pattern, characterized in that it has been deleted within the area between the lines of each set of lines, and its Surimono a (JP-A-9-136480) has already filed.
[0010]
  Further, the applicant of the present application further improved the printed matter having the anti-copying pattern to make it more effective for the copying machine. A periodic aggregate pattern consisting of a curved line pattern consisting of a continuous line of the image line where the latent image is not applied, and an image line of the shape where the image line of the latent image is arranged at regular intervals in the basic line direction The sum of the image area of the part corresponding to one cycle consisting of one non-image part and one non-image part, which is composed of a line and has a continuous line in the direction of the basic line, of the part where the latent image is applied. , Among the continuous lines of the portion where the latent image is not applied, equal to the image area of the portion corresponding to the same length as the one cycle in the basic line direction, and further, the periodic interruption of the portion where the latent image is applied In the line that is a line, at the part where the lines of the periodic break line intersect each other, delete one of the lines within the line width of the other line Filed an anti-copying pattern creation method and printed matter (Japanese Patent Laid-Open No. 9-240135) To have. However, along with recent technological advances in the resolution of color copiers, there has been a problem that it is difficult to clearly develop a latent image when the printed matter of the above publication is copied with a copier.
[0011]
[Problems to be solved by the invention]
  The present invention seeks to solve the aforementioned problems. As a method for enhancing the invisibility of the latent image in the copy protection pattern, from the viewpoint of human eye characteristics and psychological viewpoint, the human eye is sensitive to the low frequency of the image and insensitive to the high frequency. In other words, because it has the characteristics of a low-frequency pass filter, for example, when a lot of small dots are lined up, the image is blurred from the low-frequency filter characteristics, psychologist (Westheimer) find out about the mechanism of the human brain There is a law of proximity in which adjacent lines and points become one unit. When these occur at the same time, for example, when small points are arranged on a line, the set of points is recognized as a single line because the density is equal. In view of these issues, we have developed an image line design to further increase the invisibility of latent images. In other words, in order to further enhance the effect of appearance of a latent image on a copying machine, and to enhance the impression of change, the copying that can enhance the appearance of the latent image by the copying machine by subdividing the latent image portion. A method for creating a prevention pattern and a printed matter thereof are provided.
[0012]
[Means for Solving the Problems]
[0013]
  The present inventionA pattern composed of one or a plurality of straight lines or curved lines, and a plurality of lines at equal distances with reference to the basic line direction as solid lines for the lines where the latent image is not applied. The line direction is composed of fixed line breaks consisting of lines with shapes that are arranged at regular intervals. Consists of an image area and a non-image area branched toPredetermined lengthThe sum of the image area of the part corresponding to is the solid line direction in the basic line direction among the solid lines where the latent image is not applied.Predetermined lengthBy configuring with a periodic break line larger than the line area of the part corresponding to the same length,When copied, the part with the latent image becomes invisibleIt is a printed matter having a copy protection pattern.
[0014]
  The present invention also provides:A pattern composed of one or a plurality of straight lines or curved lines, and a plurality of lines at equal distances with reference to the basic line direction as solid lines for the lines where the latent image is not applied. Branching into two or more branching lines, and at least one of the drawing lines is separated from other branching lines.Shapes arranged at different periodsConsists of a fixed-cycle break line consisting of the image line, and consists of a non-image line portion and a non-image line portion that branches in the basic line direction among the fixed-cycle break lines of the portion where the latent image is appliedPredetermined lengthThe sum of the image area of the part corresponding to is the solid line direction in the basic line direction among the solid lines where the latent image is not applied.Predetermined lengthBy configuring with a periodic break line equal to the line area of the part corresponding to the same length,When copied, the latent image is visible.It is a printed matter having a copy protection pattern.
[0015]
  The present invention also provides:A pattern composed of one or a plurality of straight lines or curved lines, and a plurality of lines at equal distances with reference to the basic line direction as solid lines for the lines where the latent image is not applied. Branching into two or more branching lines, and at least one of the drawing lines is separated from other branching lines.Shapes arranged at different periodsConsists of a fixed-cycle break line consisting of the image line, and consists of a non-image line portion and a non-image line portion that branches in the basic line direction among the fixed-cycle break lines of the portion where the latent image is appliedPredetermined lengthThe sum of the image area of the part corresponding to is the solid line direction in the basic line direction among the solid lines where the latent image is not applied.Predetermined lengthBy configuring with a periodic break line larger than the line area of the part corresponding to the same length,When copied, the part with the latent image becomes invisibleIt is a printed matter having a copy protection pattern.
[0016]
  The present invention also provides a pattern consisting of one or a plurality of lines or straight lines, with the solid lines representing the areas where the latent image is not applied and the basic lines representing the lines where the latent image is applied. As a reference, it is divided into a plurality of equidistant lines, and each line that is divided into a plurality of lines is arranged at regular intervals. Among the solid lines of the portion where the latent image is not applied, the sum of the image area of the portion corresponding to the first predetermined length composed of the image portion and the non-image portion branched in the basic line direction A portion corresponding to the same length as the first predetermined length in the line direction Of the first visibility pattern composed of constant periodic break lines larger than the line area of the minute and the constant periodic break lines of the latent image portion, the image line portion and the non-image line portion branched in the basic line direction The sum of the image line areas of the portion corresponding to the second predetermined length made of is equivalent to the same length as the second predetermined length in the basic line direction among the solid lines where the latent image is not applied. By providing a first invisibility pattern composed of a periodic break line equal to the image area of the part, the first visibility pattern becomes invisible when copied, and the first invisibility pattern is visible This is a printed matter having an anti-copying pattern that can be made.
[0017]
  The present invention also provides a pattern consisting of one or a plurality of lines or straight lines, with the solid lines representing the areas where the latent image is not applied and the basic lines representing the lines where the latent image is applied. A periodic break line composed of a plurality of lines that are branched at equal distances as a reference, and that have a shape in which at least one of the lines is arranged at a different period from the other branched lines. The line area of the portion corresponding to the first predetermined length consisting of the image line portion and the non-image line portion branched in the basic line direction among the fixed period break lines of the portion subjected to the latent image The second visual recognition composed of a constant periodic break line whose sum is larger than the image area of the portion corresponding to the same length as the first predetermined length in the basic line direction among the solid lines where the latent image is not applied Out of the periodic line and the non-image part branched in the basic line direction among the periodic pattern break line of the part where the sexual pattern and the latent image are applied The image of the portion corresponding to the same length as the second predetermined length in the basic line direction among the solid lines of the portion where the latent image is not applied is the sum of the image area of the portion corresponding to the predetermined length of 2 By providing a second invisibility pattern composed of a constant periodic break line equal to the line area, the second visibility pattern becomes invisible when copied, and the second invisibility pattern becomes visible. It is a printed matter having a copy protection pattern.
[0018]
  The present invention also provides a pattern consisting of one or a plurality of lines or straight lines, with the solid lines representing the areas where the latent image is not applied and the basic lines representing the lines where the latent image is applied. As a reference, it is divided into a plurality of equidistant lines, and each line that is divided into a plurality of lines is arranged at regular intervals. Among the solid lines of the portion where the latent image is not applied, the sum of the image area of the portion corresponding to the first predetermined length composed of the image portion and the non-image portion branched in the basic line direction At least 1 of the 1st visibility pattern comprised by the fixed periodic break line larger than the image area of the part corresponded to the same length as the 1st predetermined length in the line direction, and the image line branched into plurality It is a periodic break line consisting of lines with a shape in which more than one line is arranged with a different period from other branched lines. The sum of the image area of the portion corresponding to the second predetermined length consisting of the image line portion and the non-image line portion branched in the basic line direction among the fixed periodic break lines of the portion formed with the latent image Is a second non-viewing line constituted by a fixed periodic break line equal to the image line area of the part corresponding to the same length as the second predetermined length in the basic line direction among the solid lines of the part where no latent image is applied. By providing the pattern, the first visibility pattern becomes invisible when copied, and the printed matter has a copy prevention pattern in which the second invisibility pattern becomes visible.
[0019]
  The present invention also provides a pattern consisting of one or a plurality of lines or straight lines, with the solid lines representing the areas where the latent image is not applied and the basic lines representing the lines where the latent image is applied. A periodic break line composed of a plurality of lines that are branched at equal distances as a reference, and that have a shape in which at least one of the lines is arranged at a different period from the other branched lines. The line area of the portion corresponding to the first predetermined length consisting of the image line portion and the non-image line portion branched in the basic line direction among the fixed period break lines of the portion subjected to the latent image The second visual recognition composed of a constant periodic break line whose sum is larger than the image area of the portion corresponding to the same length as the first predetermined length in the basic line direction among the solid lines where the latent image is not applied A periodic break line consisting of a characteristic pattern and a plurality of branched lines arranged at regular intervals. The sum of the image area of the portion corresponding to the second predetermined length consisting of the image line portion and the non-image line portion branched in the basic line direction among the fixed periodic break lines of the portion formed with the latent image Is a first non-viewing line constituted by a periodic break line equal to an image area of a portion corresponding to the same length as the second predetermined length in the basic line direction among the solid lines of the portion where no latent image is applied. By providing the characteristic pattern, the second visible pattern becomes invisible when copied, and the printed matter has a copy prevention pattern in which the first invisible pattern is visible.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
  In the printed matter suitable for counterfeiting by a conventional copying machine, a latent image is given by the density of the screen pattern such as halftone dots or lines, whereas the entire printed surface is a screen pattern with a uniform density, The present invention relates to a pattern composed of one or a plurality of straight lines or curved lines, with the solid lines representing the image lines where the latent image is not applied and the basic lines as the reference lines representing the image lines where the latent image is applied. The non-visibility is increased and the latent image portion is formed by a constant periodic disconnection line composed of image lines that are branched into a plurality of equal distances and the lines branched into a plurality are arranged at regular intervals. Therefore, when copying with a copying machine, the latent image appears more clearly with the naked eye.
[0021]
  Also, for a pattern consisting of one or more lines of straight or curved lines, the image line of the portion where the latent image is not applied is a solid line, and the image line of the portion where the latent image is applied is the same distance from the basic line direction. The line is divided into a plurality of lines, and the lines divided into a plurality of lines are composed of fixed line break lines each having a shape arranged at regular intervals. Consists of an image area and a non-image area branched in the basic directionPredetermined lengthThe sum of the image area of the portion corresponding to is the solid line portion of the portion where the latent image is not applied, in the basic line direction.Predetermined lengthThe copy-preventing pattern (hereinafter referred to as the first non-visible copy-preventing pattern image line) composed of a constant periodic break line equal to the image line area of the portion corresponding to the same length as When the printed matter on which the prevention pattern is printed is observed, the image line of the first invisible printed matter is recognized as if it is an extension of the solid line of the portion where the latent image is not applied. Cannot be identified at all.
[0022]
  Also, for a pattern consisting of one or more lines of straight or curved lines, the image line of the portion where the latent image is not applied is a solid line, and the image line of the portion where the latent image is applied is the same distance from the basic line direction. The line is divided into a plurality of lines, and the lines divided into a plurality of lines are composed of fixed line break lines each having a shape arranged at regular intervals. Consists of an image area and a non-image area branched in the basic directionPredetermined lengthThe sum of the image area of the portion corresponding to is the solid line portion of the portion where the latent image is not applied, in the basic line direction.Predetermined lengthThe copy prevention pattern (hereinafter referred to as the first visibility copy prevention pattern image line) composed of a constant periodic break line larger than the image line area of the portion corresponding to the same length as the above is prevented. When the printed matter on which the pattern is printed is observed, the image line of the first visibility copy-preventing pattern can be identified with the naked eye.
[0023]
  That is, in the image line of the first invisibility anti-copying pattern, the image line in the portion where no latent image is applied and the image line of the first invisibility anti-copying pattern in the basic line directionPredetermined lengthWhen the entire printed matter is printed with the same line area in the part corresponding to the same length and the expansion line is taken into account, the first non-visibility copy prevention is given to the observer. The first non-visibility copy prevention by the naked eye by recognizing the pattern image line as an extension of the image line area where the latent image is not applied even though the pattern image line is a periodic cut-off line This makes it possible to make the line of the pattern completely indistinguishable.
In addition, when a printed matter having a first non-visible copy prevention pattern image line is copied by a copying machine, the first non-visible copy prevention pattern image line is subjected to a latent image due to the resolving power of the copying machine. The image line of the unrecognized portion is reproduced as it is, and the image line of the first non-visible copy protection pattern is not reproduced or cannot be reproduced. Are recognized as one continuous line in the direction of the basic line, and the first non-visible copy-proof pattern is subdivided and becomes unrecognizable, and the first non-visible copy. The density difference occurs between the image line of the prevention pattern and the image line of the portion where the latent image is not applied, and the image line of the first non-visible copy protection pattern is almost the same color as the background color to the naked eye, and the first non-visibility The anti-copying pattern appears.
[0024]
  Further, in the image line of the first visibility anti-copying pattern, the image line in the portion where the latent image is not applied and the image line of the first visibility anti-copying pattern are in the basic line direction.Predetermined lengthIn the portion corresponding to the same length as the above, the latent image is applied.Predetermined lengthThe total of the image area is the larger image area, and the large image area amount is copied in consideration of the reproducibility of the solid line where the latent image is not applied by the copying machine and the periodic break line. Later in the baseline directionPredetermined lengthIn the direction of the basic line so that the area corresponding to the same length is equal to the line areaPredetermined lengthIn the image line of the first visibility anti-copying pattern in a portion corresponding to the same length asPredetermined lengthThe total of the image area of thePredetermined lengthWhen the whole printed matter is observed with an image line that takes into consideration the expansion value, etc., by adding a difference in the image area amount (density) in the portion corresponding to the same length as the image, the observer will not be given a latent image Since the image area of the first visibility anti-copying pattern is darker than the image of the portion, the image area of the first visibility anti-copying pattern should be visually observed before copying. Can be identified. Further, when a printed matter having a first visibility copy-prevention pattern image line is copied by a copying machine, the first visibility copy-prevention pattern image line is a part where a latent image is not applied because it is a periodic break line. The ratio of shrinkage between the solid line of the image line where the latent image is not applied in the reproduction of the image of the copier and the fixed-cycle breakage line is larger by the difference than the image line ofPredetermined lengthIn the portion corresponding to the same length, the image density of the first visibility copy-prevention pattern is assimilated with the image line of the portion not subjected to the latent image, and the first visibility copy-protection pattern Although the image line is not accurately reproduced, it is recognized as an extension of the solid line of the portion where the latent image is not applied. The stroke cannot be identified.
[0025]
  Also, for a pattern consisting of one or more lines of straight or curved lines, the image line of the portion where the latent image is not applied is a solid line, and the image line of the portion where the latent image is applied is the same distance from the basic line direction. Branching into a plurality of lines, and at least one of the plurality of branching lines is separated from the other branching lines.Shapes arranged at different periodsConsists of a fixed-cycle break line consisting of the image line, and consists of a non-image line portion and a non-image line portion that branches in the basic line direction among the fixed-cycle break lines of the portion where the latent image is appliedPredetermined lengthThe sum of the image area of the portion corresponding to is the solid line portion of the portion where the latent image is not applied, in the basic line direction.Predetermined lengthThe copy-preventing pattern (hereinafter referred to as the second non-visible copy-preventing pattern image line) composed of a constant periodic break line equal to the image line area of the portion corresponding to the same length as When observing the printed matter with the prevention pattern printed, the image line of the non-visible printed matter is recognized as if it is an extension of the solid line where the latent image is not applied. It is possible to make it impossible. In addition, the image line of the portion where the latent image is applied is branched into a plurality of equal distances with reference to the basic line direction, and at least one of the image lines branched into the plurality is branched into other image lines. WhenShapes arranged at different periodsWhen the printed matter having the image line of the second non-visible copy prevention pattern is copied by a copying machine, the second non-visible copy prevention pattern is formed. Since the image line of the second non-visible copy prevention pattern is not reproduced or cannot be reproduced due to the characteristics of the scanning line of the copying machine, the image of the second non-visible copy prevention pattern is displayed. The lines are more subdivided and become unrecognizable, and there is a difference in density between the image line of the second non-visible copy-preventing pattern and the image line of the portion where no latent image is applied, and the second non-visible copy with the naked eye The image line of the prevention pattern is almost the same color as the background color, and the second non-visible copy prevention pattern appears more clearly.
[0026]
  Also, for a pattern consisting of one or more lines of straight or curved lines, the image line of the portion where the latent image is not applied is a solid line, and the image line of the portion where the latent image is applied is the same distance from the basic line direction. Branching into a plurality of lines, and at least one of the plurality of branching lines is separated from the other branching lines.Shapes arranged at different periodsConsists of a fixed-cycle break line consisting of the image line, and consists of a non-image line portion and a non-image line portion that branches in the basic line direction among the fixed-cycle break lines of the portion where the latent image is appliedPredetermined lengthThe sum of the image area of the portion corresponding to is the solid line portion of the portion where the latent image is not applied, in the basic line direction.Predetermined lengthThe copy prevention pattern (hereinafter referred to as the second visibility copy prevention pattern image line) composed of a constant periodic break line larger than the image line area of the portion corresponding to the same length as the image copy prevention. When the printed matter on which the pattern is printed is observed, the image line of the second visibility anti-copying pattern can be identified with the naked eye. In addition, the image line of the portion where the latent image is applied is branched into a plurality of equal distances with reference to the basic line direction, and at least one of the image lines branched into the plurality is branched into other image lines. WhenShapes arranged at different periodsTherefore, if a printed matter having a second visibility copy prevention pattern image line is copied by a copying machine, the second visibility copy prevention pattern image is formed. The line is in the basic line direction from the characteristics of the scanning line of the copying machine.Predetermined lengthIn the portion corresponding to the same length, the image density of the second visibility anti-copying pattern becomes more assimilated with the image quality of the portion not subjected to the latent image, and the second visibility. Although the image line of the anti-copying pattern is not accurately reproduced, it is recognized as if it is an extension of the solid line of the portion where the latent image is not applied. The line of the anti-copying pattern cannot be identified more.
[0027]
  Further, in the first visibility anti-copy pattern image line, the first visibility anti-copy pattern image area intersects, and the first non-visibility anti-copy pattern image line intersects. In the region where the image lines of the second visibility-preventing anti-copying pattern intersect, and the image line of the second non-visible anti-copying pattern, where the image lines overlap each other By deleting the line, when the anti-copying pattern is viewed as a whole, the lines of the first visibility anti-copying pattern in the pattern, the lines of the first invisibility anti-copying pattern, In an area where the lines of the second visibility anti-copying pattern and the lines of the second non-visible anti-copying pattern intersect, In the image line of the portion where the latent image has been applied, either one of the image lines is deleted in the intersecting area. , The intersection of each other streaked (overlapping) does not exist. Therefore, it is possible to prevent an increase in the density of the image line that occurs in a region where the image lines intersect. As a result, when a printed matter having the image line configuration of the present invention is copied by a copying machine, the first visibility copy prevention pattern image lines intersect (overlap) due to the resolving power of the copying machine, the first The non-visible copy prevention pattern image lines intersect (overlap), the second visibility copy prevention pattern image lines intersect (overlap), the second non-visible copy In the region where the image lines of the prevention pattern intersect (overlap), either one of the image lines is deleted in the region where the image line intersects, so that there is no increase in density and the first and second non-visibility The image line of the copy protection pattern is not reproduced or cannot be reproduced, and the image lines of the first and second invisible copy protection pattern are substantially the same color as the background color, and the first and second non-copy patterns Visibility of the anti-copying pattern of visibility appears and the first and second visibility Streaked prevention pattern is not to inhibit to merge with streaking of the portion not subjected to latent image with the naked eye. Therefore, the image lines of the first and second invisibility anti-copying patterns are more clearly expressed in the latent image, and the image lines of the first and second visibility anti-copying patterns in the portion where the latent image is not applied. Assimilation with the stroke becomes more prominent with the naked eye. Similarly, the first visibility anti-copy pattern image line, the first non-visibility anti-copy pattern image line, the second visibility anti-copy pattern image line, or the second non-visual copy. When there are at least two copy prevention patterns among the lines of the prevention pattern, in the image lines of the copy prevention pattern, any one of the lines is drawn at a portion where the lines intersect. By deleting the areas where the lines intersect, the areas where the lines of the anti-copying pattern intersect (overlap) are not increased in density, and the same effect can be obtained.
[0028]
  Further, the image line of the portion where the latent image is not applied and the boundary line on the image line of the first visibility copy-preventing pattern, the image line of the portion where the latent image is not applied and the image of the first non-visible copy protection pattern Boundary line on line, image line of part not subjected to latent image and image line of second visibility copy prevention pattern, image line of part not subjected to latent image and second non-visibility copy prevention The boundary line on the image line of the pattern is a straight line that intersects the basic line at a substantially right angle at the intersection of the basic line and the outline of the latent image, and at the same time, on the image line of the first visibility anti-copying pattern. On the border between the image area and the non-image area, on the image line on the image line of the first non-visible copy prevention pattern, on the boundary line between the image area and the non-image area, and on the image line of the second visibility anti-copy pattern At the intersection of the border line between the image line part and the non-image line part and the border line between the image line part and the non-image line part on the image line of the second non-visible copy protection pattern. Substantially by a straight line intersecting at right angles, according to the linear shape of the base line, the different angles to each boundary can be imparted. Further, the image line of the portion where the latent image is not applied and the boundary line on the image line of the first visibility copy prevention pattern, the image line of the portion where the latent image is not applied and the image of the first non-visibility copy prevention pattern Boundary line on line, image line of part not subjected to latent image, and boundary line on image line of second visibility copy prevention pattern, image line of part not subjected to latent image, and second non-visibility copy prevention Boundary line on the image line of the pattern, Boundary line between the image line part and the non-image line part on the image line of the first visibility anti-copying pattern, and an image line part on the image line of the first non-visual copy protection pattern And the non-image portion, the boundary line between the image line of the second visibility anti-copying pattern and the non-image line portion, and the image line portion on the image line of the second non-visibility anti-copying pattern Since the borders of the image area are not necessarily in the same direction, the interference between the outline of the latent image and the anti-copying pattern can be prevented, and the latent image is visually and visually invisible by the naked eye. It is. Similarly, the first visibility anti-copy pattern image line, the first non-visibility anti-copy pattern image line, the second visibility anti-copy pattern image line, or the second non-visual copy. In the case of having at least two copy prevention patterns among the lines of the prevention pattern, the boundary line on the image line of the copy prevention pattern is set to the basic line at the intersection of the basic line and the outline of the latent image. On the other hand, by forming a straight line that intersects at a substantially right angle, interference between the contour line of the latent image and the copy-preventing pattern can be prevented, and the latent image can be visually and visually invisible with the naked eye.
[0029]
【Example】
  The image line structure of the anti-copying pattern of the present invention will be described with reference to the drawings. As shown in FIG. 1, the copy-preventing pattern according to the image line structure of the present invention originally has an image line (6) where no latent image is applied and an image line (7) of the first non-visible copy-protection pattern. And a line (8) of the first visibility anti-copying pattern. The image line configuration of the present invention will be described with reference to FIGS. FIG. 2 is an enlarged view (design drawing) showing the shape of the image line (6) where the latent image is not applied and the image line (7) of the first invisible copy protection pattern. FIG. 3 is an enlarged view (design drawing) showing the shape of the image line (6) where the latent image is not applied and the image line (8) of the first visibility anti-copying pattern.
[0030]
  In this embodiment, the image line of the portion where the latent image is applied, that is, the image line (7) of the first non-visible copy protection pattern and the image line of the first visibility copy prevention pattern ( 8) has been described with reference to a copy-preventing pattern having a structure of three branches at equal distances with respect to the basic line direction, but the present invention is not limited to this embodiment.
[0031]
  In FIG. 2, the image line width in the direction perpendicular to the basic line (10) of the solid line (11) where the latent image is not applied is A, and the image line (7) of the first non-visible copy protection pattern. The line width in the direction perpendicular to the basic line (10) of the line segment of the periodic break line is a, and the center line (H2) of the periodic break line separated by an equal distance H up and down with respect to the basic line (10) ), The line width in the direction perpendicular to b, c, the length in the basic line direction with respect to the line width a, a2, the length in the basic line direction with respect to the line width b, b2, The length in the basic line direction with respect to the line width c is c2, the length in the basic line direction of the non-line portion of the fixed line break line with the line width a is a3, and the fixed line break line with the line width b. Let b3 be the length in the basic line direction of the non-image line portion, and c3 be the length in the basic line direction of the non-image line portion of the periodic break line having the image line width c. The first non-visible copy-preventing pattern image line is composed of one continuous image line part and a non-image line part of a continuous periodic break line.Predetermined length in the basic line directionAnd B, g is an expansion value (or contraction value) generated around the image area when printed. Here, when printing the anti-copying pattern according to the image line structure of the present invention, in order to achieve the effects of the present invention as described above, the solid line (11) of the portion where the latent image is not applied and the first invisibility. Since the image area of the periodic cut line of the image line (7) of the anti-copying pattern is an important factor, the image line width and the basic direction in the direction perpendicular to the basic line (10) in the image area at the time of printing It is preferable to consider changes in the line length in the line direction. On the printed matter, the image line width in the direction perpendicular to the basic line (10) of the solid line (11) where the latent image is not applied is A + g + g, that is, A + 2g. The line widths in the direction perpendicular to the basic line (10) of the line portion of the periodic break line of line (7) are a + 2g, b + 2g, c + 2g, respectively, and the length in the basic line direction with respect to the line width The lengths are a2 + 2g, b2 + 2g, and c2 + 2g.
[0032]
  In order to produce the operation and effect of the present invention,Predetermined lengthA region area X of a solid line (11) where a latent image is not applied and a line portion Y1 of a periodic cut-off line of a first non-visible copy-preventing pattern image (7); The relationship between the area area Z1 of Y2 and Y3 is important, and X must be equal to Z1 which is the sum of the areas of Y1, Y2 and Y3. Specifically, it is preferable that the sum of the image area of Y1, Y2, and Y3 is within an allowable range of 95% to 110% from X. This allowable range is a concentration that prevents the first invisible copy-preventing pattern image line from being recognized by the naked eye during printing, and the first non-visible copy-preventing pattern image after copying. The line is in a range that is almost the same color as the background color with the naked eye, and the area of the area needs to be 95% to 110%, depending on the hue of the ink. Since the printed material created with the area of the periodic break line being 95% or less has a smaller area than the image line of the portion where no latent image is applied, the image line of the first non-visible copy protection pattern is visually observed. It is not enough to make it unrecognizable with the naked eye.
[0033]
  In addition, the upper limit of the area of the area is set not to exceed 110%, and when the area of the area exceeds 110%, a printed matter having an image line of a portion where no latent image is applied and an image line of a first invisible copy protection pattern When copied by a copying machine, the density of the first non-visible copy-preventing pattern image line does not decrease, there is no density difference from the image line of the portion where no latent image is applied, and the first non-visible copy. The image of the prevention pattern becomes unrecognizable with the naked eye. This is an allowable range for ensuring invisibility during printing. That is, in the image line configuration that achieves the effects of the present invention, at the stage of image line design,
[Expression 1]

It is preferable that the relationship is satisfied.
[0034]
  In FIG. 3, the image line width in the direction perpendicular to the basic line (10) of the solid line (11) where the latent image is not applied is A, and the image line (8) of the first visibility anti-copying pattern is defined. The center line (H2) of the periodic break line that is separated by an equal distance H up and down with respect to the basic line (10) as the vertical line width passing through the basic line (10) of the line part of the periodic break line (d) The line width in the direction perpendicular to the line width is e, f, the length in the basic line direction with respect to the line width d is d2, the length in the basic line direction with respect to the line width e is e2, and the line The length in the basic line direction with respect to the width f is set to f2, the length in the basic line direction of the non-image line portion of the fixed line break line of the image line width d is d3, and the fixed line break line of the image line width e is Let e3 be the length in the basic line direction of the non-image portion, and let f3 be the length in the basic line direction of the non-image portion of the fixed line break line of the image width f. Consists of a single line segment and a non-line segment having a continuous periodic break line of the first visibility copy-prevention patternPredetermined length in the basic line directionAnd B, g is an expansion value (or contraction value) generated around the image area when printed. Here, when printing the anti-copying pattern according to the image line configuration of the present invention, in order to achieve the effects of the present invention as described above, the solid line (11) of the portion where the latent image is not applied and the first visibility. Since the line area of the periodic break line of the image line (8) of the anti-copying pattern is an important factor, the line width and the basic line in the direction perpendicular to the basic line (10) in the image line area at the time of printing It is preferable to consider changes in the direction line length. On the printed matter, the line width in the direction perpendicular to the basic line (10) of the solid line (11) where the latent image is not applied is A + g + g, that is, A + 2g, and the image line of the first visibility anti-copying pattern The line widths in the direction perpendicular to the basic line (10) of the line portion of the periodic cut line in (8) are d + 2g, e + 2g, and f + 2g, respectively, and the length in the basic line direction with respect to the line width. Becomes d2 + 2g, e2 + 2g, and f2 + 2g.
[0035]
  In order to produce the operation and effect of the present invention,Predetermined lengthThe area area X of the solid line (11) where the latent image is not applied and the line portion Y4, Y5 of the periodic cut-off line of the image line (8) of the first visibility copy-preventing pattern in the length B of , Y6 and the area Z2 are important, and Z2 which is the sum of the areas Y4, Y5 and Y6 must be larger than X. Specifically, it is preferable that the sum of the image area of Y4, Y5, and Y6 is within an allowable range of 120% to 140% from X. This allowable range is a density difference that allows the visual line of the first visibility copy-preventing pattern to be clearly recognized by the naked eye at the time of printing. The image line is a range that is assimilated with the naked eye to the solid line (11) where the latent image is not applied, and the area of the area needs to be 120% or more, depending on the hue of the ink. The printed matter created with the area area of the periodic break line being 110% to 120% has a larger area area than the image line of the portion where the latent image is not applied, but the image line of the first visibility anti-copying pattern is displayed. It is not enough to recognize with the naked eye.
[0036]
  In addition, in the printed matter copied by the copying machine, the image line of the first visibility copy-preventing pattern appears more positive than the image line of the portion where no latent image is applied, but becomes negative after copying, and the reversal phenomenon occurs. For this reason, the upper limit of the area of the area should not exceed 140%, and if the area of the area exceeds 140%, the printed matter having the image line of the portion where the latent image is not applied and the image line of the first visibility anti-copying pattern is generated. When copied by a copying machine, the density of the image line of the first visibility copy-preventing pattern is not lowered, and there is a density difference from the image line of the portion where the latent image is not applied. Can be recognized with the naked eye. As a result of taking these into consideration, in the image line configuration that exhibits the effects of the present invention, at the stage of image line design,
[Expression 2]

It is preferable that the relationship is satisfied.
[0037]
  Furthermore, the image line structure of the anti-copying pattern according to the present invention includes an image line forming a pattern composed of one or a plurality of linear or curved lines, a solid line representing an image line of a portion where no latent image is applied, The image line of the first non-visible copy protection pattern is composed of fixed line breaks made of image lines arranged in the basic line direction at regular intervals. Out of the fixed line breaks of the line consisting of one line part and non-line part continuous in the basic line directionPredetermined lengthThe image area of the portion corresponding to the above in the basic line direction among the solid lines where the latent image is not applied.Predetermined lengthIt is characterized by being equal to the image area of the portion corresponding to the same length. In addition, an image line that forms a pattern composed of one or a plurality of image lines in a straight line or a curved line, an image line of a portion where no latent image is applied, a solid line, and an image line of a first visibility anti-copy pattern Consists of fixed-cycle breaks consisting of lines with shapes arranged at regular intervals in the line direction, and is continuous in the basic line direction among the fixed-cycle breaks of the first visibility copy prevention pattern Consists of a single image area and a non-image areaPredetermined lengthThe image area of the portion corresponding to the above in the basic line direction among the solid lines where the latent image is not applied.Predetermined lengthIt is characterized by being larger than the image area of the portion corresponding to the same length. When the lengths in the basic line direction of the non-image portion of the fixed line break line of the image line of the first non-visible copy prevention pattern on the printed material are a3, b3, and c3, respectively, a3 shown in FIG. , B3, and c3 may be set in a range of 25 μm to 60 μm that is not resolved by the copying machine. Similarly, on the printed matter, when the lengths in the basic line direction of the non-image line portion of the fixed line break line of the image line of the first visibility copy-preventing pattern are d3, e3, and f3, respectively, FIG. D3, e3, and f3 shown may be set in a range of 25 μm to 60 μm that is not resolved by the copying machine.
[0038]
  FIG. 4A is an image line configuration diagram made up of the second non-visible copy protection pattern. Compared to the image line configuration of the image line (7) of the first non-visual copy protection pattern in FIG. In the image line of the second invisibility anti-copying pattern, one image line (7a) has a deviation (S) from the other two image lines (7b) and (7c) branched. As the value of the deviation (S) of the one image line (7a) becomes closer to the value of the length (b2) or (c2) of the other two branched basic lines, When a printed matter having a non-visibility copy prevention pattern image line 2 is copied, the second non-visibility copy prevention pattern image line is complicated, so that the scanning line of the copying machine can be read. The effect of making it difficult is born. As a result, the image line (6) of the portion where the latent image is not applied is faithfully reproduced, but the image line of the second non-visible copy protection pattern is almost the same color as the background color, and the second non-visible image The latent image can be recognized with the naked eye even more clearly.
[0039]
  FIG. 4B is an image line configuration diagram composed of the second visibility copy-preventing pattern. Compared to the image line configuration of the image line (8) of the first visibility copy-protection pattern in FIG. In the image line of the second visibility anti-copying pattern, one image line (8d) has a deviation (S) from the other two branched image lines (8e) and (8f). Regarding the value of the deviation (S) of the one image line (8d), the length (e2) or (f2) of the other two branched basic lines in consideration of the area of the region. The closer the approximation, the more the printed line having the image line of the second visibility anti-copying pattern is copied. An effect that makes reading with lines difficult is born. As a result, the image line (6) of the portion where the latent image is not applied is faithfully reproduced, but the image line of the second visibility copy-preventing pattern has a reduced density and the image line of the portion where the latent image is not applied. The density becomes more equal to that of (6), and the assimilation of the image line (6) of the portion where no latent image is made with the naked eye and the image line of the second visibility anti-copying pattern becomes more prominent.
[0040]
  Further, FIG. 4A is an image line configuration diagram made up of the second non-visible copy protection pattern, and the image line configuration of the image line (7) of the first non-visual copy protection pattern in FIG. On the other hand, the image line of the second non-visible copy prevention pattern is composed of an image line part and a non-image line part of one image line (7a).Predetermined length in the basic line directionT, and the other two branched lines (7b) and (7c) are composed of the image area and non-image area.Predetermined length in the basic line directionIs B. In this case, it consists of the image line part and the non-image line part.Predetermined length in the basic line directionConsists of the image area and non-image area from BPredetermined length in the basic line directionT is set with a long period. Consists of the image area and non-image areaPredetermined length in the basic line directionAs for the value of T, the latent image effect is improved as it is set with the longest possible period within the range where the area of the region can be taken into consideration. When a printed matter having a second invisible anti-copying pattern image line is copied, the second non-visible anti-copying pattern image line is complicated, so that the scanning line of the copier reads. The effect that makes it difficult is born. As a result, the image line (6) of the portion where the latent image is not applied is faithfully reproduced, but the image line of the second non-visible copy protection pattern is almost the same color as the background color, and the second non-visible image The latent image can be recognized with the naked eye even more clearly. The second non-visible copy protection pattern appears more clearly, and the latent image can be recognized.
[0041]
  FIG. 4B is an image line configuration diagram composed of the second visibility anti-copying pattern. The image line configuration of the image line (8) of the first visibility anti-copying pattern shown in FIG. On the other hand, the image line of the second visibility copy-preventing pattern is composed of an image line portion and a non-image line portion of one image line (8d).Predetermined length in the basic line directionT, and the other two branched image lines (8e) and (8f) are composed of the image area portion and the non-image area portion.Predetermined length in the basic line directionIs B. In this case, it consists of the image line part and the non-image line part.Predetermined length in the basic line directionConsists of the image area and non-image area from BPredetermined length in the basic line directionT is set with a long period. Consists of the image area and non-image areaPredetermined length in the basic line directionAs the value of T is set to the maximum possible period within the range where the area of the area can be taken into consideration, the second visual recognition is made when a printed matter having a second visibility copy-preventing pattern is copied. Since the image line of the anti-copying pattern is complicated, the effect of making it difficult to read with the scanning line of the copying machine is produced. As a result, the image line (6) of the portion where the latent image is not applied is faithfully reproduced, but the image line of the second visibility copy-preventing pattern has a reduced density and the image line of the portion where the latent image is not applied. The density becomes more equal to that of (6), and the assimilation of the image line (6) of the portion where no latent image is made with the naked eye and the image line of the second visibility anti-copying pattern becomes more prominent.
[0042]
  In this embodiment, in the second non-visible copy-protection pattern image line and the second visible copy-protection pattern image line, one image line deviates from the other two branched image lines. However, the present invention is not limited to this embodiment, and a plurality of image lines having different lengths composed of an image line portion and a non-image line portion of one image line are described. At least one of the drawn lines is separated from other branched lines.If it is a different cycleA similar latent image effect appears.
[0043]
  As shown in FIG. 5, any one of the image line portions of the image line (7) in a region where the image lines of the image line portion (7) of the first invisible copy protection pattern intersect. One image line (7) is deleted. Further, in the region where the image lines of the image line portion (8) of the first visibility copy-preventing pattern intersect, any one of the image lines (8) of the image line portion (8) ( 8) is deleted. Further, in the region where the image lines of the first non-visibility copy prevention pattern (7) and the image lines of the image line portion of the first visibility copy prevention pattern (8) intersect, Either the image line (7) or (8) is deleted. Therefore, when the anti-copying pattern of the present invention is viewed as a whole, even if it appears that there is a region where the curved lines in the pattern intersect, the first non-invisible copying prevention The image lines of the pattern image line (7), the image lines of the first visibility copy-protection pattern image line (8), the image lines of the image line portion of the first visibility image, No intersection (overlap) exists between the image line part of the image line (7) and the image line part of the image line part (8) of the first visibility anti-copying pattern. Accordingly, it is possible to prevent the image density from being increased at the intersecting portion. That is, when the pattern is usually created, as shown in FIG. 6, the first periodic non-copying pattern image line (7) of the periodic cut-off line image line, the first visibility anti-copying pattern image pattern is formed. The lines of the periodic cut line of the image line (8), the image line part of the fixed line break line of the first non-visibility copy prevention pattern (7) and the first visibility copy prevention pattern The line of the fixed line break line of the line (8) is completely intersected, but one of the lines is deleted in the region where the lines intersect as shown in FIG. As a result, when a printed matter having the image line configuration of the present invention is copied by a copying machine, the image line of a portion where no latent image is applied is faithfully reproduced due to the resolving power of the copying machine. The image line of the anti-copying pattern is not reproduced, or becomes the same color as the background color due to poor reproduction, and there is a difference in density between the image line of the first non-visible anti-copying pattern and the solid line where the latent image is not applied. In addition, the image line of the first non-visible copy protection pattern appears more clearly without hindering the appearance of the latent image with the naked eye. In addition, although the image line of the portion where the latent image is not applied is faithfully reproduced, the image line of the first visibility anti-copying pattern has a reduced density, and therefore the image line of the first visibility anti-copying pattern. Becomes a density equal to the image line of the portion where the latent image is not applied, and the assimilation of the image line of the portion where the latent image is not subjected to the naked eye and the image line of the first visibility copy-preventing pattern becomes more remarkable.
[0044]
  The present invention is not limited to this embodiment, and the first visibility anti-copy pattern image line, the first non-visibility anti-copy pattern image line, and the second visibility anti-copy pattern. Or at least two copy-prevention pattern image lines of the second non-visible copy-prevention pattern image line, where the image lines intersect with each other. The same effect can be obtained by deleting one of the image lines in a region where the image lines intersect.
[0045]
  In addition, since the conventionally disclosed copy-preventing printed matter has a latent image formed by the density of the screen pattern at halftone dots or lines, the latent image is applied to each image line forming the copy-preventing pattern. The direction of the border line on the image line of the part where the image is not applied and the part where the latent image is applied has regularity in the same direction at the boundary between the part where the latent image is not applied and the part where the latent image is applied. However, the image line configuration according to the present invention is a non-copying pattern in the non-copying pattern, because the latent image is visually recognized and thus the camouflage pattern must be used. As a method for improving the visibility, as shown in FIG. 7, the boundary between the solid line (6) of the portion where no latent image is applied and the first non-visible copy-prevention pattern image line (7) between the periodic breaks. The line (9a) is replaced with the basic line (10) and the contour line (12) of the latent image. At the intersection (13a), the basic line to (10), a straight line (9a) intersecting substantially at right angles. In addition, the solid line (6) of the portion where no latent image is applied and the boundary line (9b) of the periodic cut-off line of the image line (8) of the first visibility copy-preventing pattern are connected to the basic line (10) and the latent line. At the intersection (13b) with the contour line (12) of the image, the straight line (9b) intersects with the basic line (10) at a substantially right angle. In addition, the boundary line (9c) between the image line portion and the non-image line portion on the fixed line break line (7) of the image line of the first invisibility copy prevention pattern (7) is changed to the basic line (10) and the first line. At the intersection (13c) of the border line (9c) between the image line portion on the fixed line break of the image line (7) of the non-visible copy prevention pattern (7) and the basic line (10), A straight line (9c) intersecting at a substantially right angle is used. Further, the boundary line (9d) between the image line portion and the non-image line portion on the fixed line break line of the image line (8) of the first visibility copy-preventing pattern, the basic line (10) and the first non-visual image. At the intersection (13d) of the border line (9d) between the image line portion and the non-image line boundary line (9d) on the periodic cut-off line of the anti-copying image line (8) The intersecting straight line (9d) is used. Since it is a straight line that intersects at a substantially right angle as shown above, the boundary line between the solid line (6) where the latent image is not applied and the image line (7) of the first invisible copy protection pattern (7) (9a), the outline of the latent image (12), and the solid line (6) where the latent image is not applied, and the line of the first visibility copy-preventing pattern (8). (9b) and the contour line (12) of the latent image can have no regularity in the same direction. Therefore, when the anti-copying pattern using the image line configuration according to the present invention is printed, the solid line (6) where the latent image is not applied and the image line (7) of the first non-visible anti-copying pattern Image line portion of break line, line portion of fixed period break line of first visibility copy-prevention pattern (8), contour line of latent image (12), first non-visibility copy prevention The image on the fixed line break line of the image line (7) on the fixed line break line and the boundary line (9c) between the non-image line part and the image line (8) of the first visibility copy prevention pattern. Interference between the boundary line (9d) between the line part and the non-image part can be prevented.
[0046]
  Further, the present invention is not limited to this embodiment, and the present invention is not limited to the first invisibility image line (7) and the first visibility anticopy pattern image ( The same effect can be obtained by making the contour line 8) a straight line that intersects the basic line (10) at a substantially right angle at the intersection of the basic line (10) and the latent image contour line (12). In addition, the image line of the first visibility anti-copying pattern (8), the image line of the first non-visibility anti-copying pattern (8), the image line of the second visibility anti-copying pattern, or the second line. If there are at least two copy-prevention pattern image lines, the boundary line on the image line is defined as the basic line (10) and the latent image contour line (12). The intersection of the latent image with the contour line (12) and the copy-preventing pattern can be prevented by forming a straight line that intersects the basic line (10) at a substantially right angle.
[0047]
  Examples of the present invention will be described in more detail. In general, a chromatic pattern is a pattern drawn on a mathematical function according to a design. Therefore, as a device for creating the pattern, a device that draws by a mechanical operation such as a gear or a cam, and a computer is used. Although there is an apparatus for drawing by a function on coordinates, in this embodiment, an example using a commercially available computer graphic design apparatus (hereinafter referred to as CGS) will be described.
[0048]
  In the present invention, as described above, the expansion value (or contraction value) of the image line at the time of printing is taken into consideration and the image line design at the time of plate making is performed, so the expansion value (or contraction value) is previously set to the test image line. investigated. As a test image line, the image line width on the original plate for plate making is set to 100 μm, a commercially available high-quality paper is used for the paper, and the ink is also offset printed with a commercially available offset ink (pink). As a result, the expansion value of the image line in the line width direction is 6 μm as a whole, and the expansion value (or contraction value) g generated around the image line when printing is 3 μm. I found out.
[0049]
  Using the value of the expansion value of 3 μm generated around the image line obtained by the test image line, according to the image line structure of the present invention, a print image line in a direction perpendicular to the solid basic line of the portion where no latent image is applied. A printing plate was prepared for obtaining a printed pattern consisting of one or more image lines having a width of 106 μm. First, using a commercially available CGS, a basic line (18) consisting of a spline curve that forms the basis of a pattern consisting of one or a plurality of image lines as shown in FIG. 8 is a gentle wavy line. The basic line (18) is set on a two-dimensional coordinate and sent in parallel at an interval of 300 μm, and the first non-visible copy-preventing pattern figure (14) and the first visible copy-proof pattern The figure (15) was placed on the basic line (18) consisting of a spline curve. Note that the first non-visible copy prevention pattern figure (14) is a figure for applying a first non-visible copy prevention pattern image line that cannot be recognized by the naked eye. The copy-preventing pattern graphic (15), which can be recognized by the naked eye, is a figure for applying a first visibility copy-protection pattern image line that is assimilated with the surrounding pattern when applied to a copying machine. When the printed matter of the present invention is copied by a copying machine by an unskilled person, any letter, number, figure, etc. can be used as long as it can be clearly identified visually.
[0050]
  As shown in FIG. 8, the boundary between the image line (6) where the latent image is not applied and the image line (7) of the first non-visible copy protection pattern is the first non-visible copy protection pattern. The basic line (18) made of a spline curve is cut at the outline (16) of the image line, and the image line surrounded by the first non-visible copy-preventing pattern figure (14) is collected, and the spline curve is drawn. An image line is provided at an equal distance of 80 μm in the vertical direction with respect to the center line of the basic line (18). Similarly, the boundary between the image line (6) of the portion where the latent image is not applied and the image line (8) of the first visibility copy prevention pattern is the first visibility copy prevention pattern as shown in FIG. The basic line (18) consisting of a spline curve is cut at the outline (17) of the image line, and the image line surrounded by the first visibility copy-preventing pattern figure (15) is collected in the same manner, and the spline curve is collected. An image line is provided at an equal distance of 80 μm in the vertical direction with respect to the center line of the basic line (18). These spline curves are used to substitute the line width and the value of the periodic break line. The reason why the lines are provided at a distance of 80 μm up and down at equal distances with respect to the center line is that the basic line (18) made of a spline curve is set to 300 μm, so that the lines of the periodic break lines do not overlap each other Since the interval is set to a certain degree, the value also changes depending on the interval of the basic line (18) formed of the spline curve.
[0051]
  First, in the anti-copying pattern to be created in the embodiment, the print image line width in the direction perpendicular to the basic line (10) of the solid line (11) where the latent image is not applied in FIGS. 2 and 3 is 106 μm. The image line width A in the image line design was set to 100 μm by subtracting the expansion value (3 + 3) μm of the image line in the image line width direction grasped by the test image line.
[0052]
  Next, the image line of the first non-visible copy protection pattern is set, that is, the line portion of the periodic cut-off line of the image line (7) of the first non-visible copy protection pattern in FIG. The line widths a, b, c in the direction perpendicular to the basic line (10) and the length of the line portion of the fixed line break line of the first invisible anti-copying pattern line in the basic line direction. It is necessary to set the lengths a3, b3, and c3 in the basic line direction of the non-image line portion of the fixed line break line of the image line of the first non-visible copy-prevention pattern, a2, b2, and c2. . First, regarding the lengths a2 + 2g, b2 + 2g, and c2 + 2g in the basic line direction of the fixed line break line of the first invisible copy-preventing pattern image line on the printed matter, the latent image is not visually recognized by the naked eye. In addition, since it is necessary that the image is not resolved by a copying machine, if the output resolution of a general copying machine is 400 dpi, one pixel is 64 μm. In this embodiment, the first non-visible copy-preventing pattern image line is defined as a + 2g is 56 μm, b + 2g is 56 μm, c + 2g is 56 μm, and H is set to be equidistant from the basic line (10). In order to prevent overlapping of the lines of the periodic disconnection line, it is set to 80 μm, a2 + 2g is 56 μm, b2 + 2g is 56 μm, c2 + 2g is 56 μm, and then the length of the non-image portion in the basic line direction is determined by the naked eye. Not recognized, and, 25Myuemu～60myuemu range not resolved by a copying machine is a possible, a3 in the present embodiment is 31 .mu.m, b3 is 31 .mu.m, c3 was 31 .mu.m. Therefore, by subtracting the expansion value (3 + 3) μm of the image line in the basic line direction grasped by the test image line, a is 50 μm, b is 50 μm, c is 50 μm, a2 is 50 μm, b2 is 50 μm, and c2 is 50 μm. Become. The length of B is the value obtained by subtracting the expansion value (3 + 3) μm from the non-image area 31 μm and the image area length 56, that is, (31−6) + 56 = 81. Substituting this into the equation (1),
0.95 × 81 × 106 ≦ 56 × 56 + 56 × 56 + 56 × 56 ≦ 1.1 × 81 × 106, and calculation shows that 8156.7 ≦ 9408 ≦ 9444.6 satisfies the relational range. .
[0053]
  In the present embodiment, the image line of the first non-visible copy protection pattern is described in the same periodicity and the same period for the three periodic break lines, but the present invention is not limited to this embodiment. The image line of the first invisibility anti-copying pattern is not limited to the above, and the image line of the latent imaged portion is branched into a plurality of equal distances with respect to the basic line direction, and is branched into the plurality. The line segments are composed of fixed line breaks made up of lines with shapes arranged at regular intervals. Of the fixed line break lines where latent images are applied, Consists of non-drawing partsPredetermined lengthThe sum of the image area of the portion corresponding to is the solid line portion of the portion where the latent image is not applied, in the basic line direction.Predetermined lengthAs long as it is equal to the image area of the portion corresponding to the same length, the respective areas branched into a plurality may be different. In addition, a similar latent image effect appears even at a two-branch periodic break line. In addition, the image line of the portion where the latent image is applied is branched into a plurality of equal distances with reference to the basic line direction, and at least one of the image lines branched into the plurality is branched into other image lines. WhenShapes arranged at different periodsIf the second invisible copy-preventing pattern of the image line is used, the latent image effect is further improved.
[0054]
  Next, the setting of the first visibility copy-prevention pattern image line, that is, the basic line of the line portion of the first periodic cut-off line image line (8) of the first visibility copy-prevention pattern in FIG. The line widths d, e, f in the direction perpendicular to (10) and the length d2, e2 in the basic line direction of the line portion of the fixed line break line of the first visibility anti-copying pattern line. , F2 and the lengths d3, e3, and f3 in the basic line direction of the non-image line portion of the fixed line break line of the image line of the first visibility anti-copying pattern. First, with respect to the lengths d2 + g + g, e2 + g + g, f2 + g + g in the basic line direction of the fixed line break line of the image line of the first visibility copy-preventing pattern on the printed matter, the latent image can be visually recognized with the naked eye, and Since it is necessary that the image is not resolved by a copying machine, if the output resolution of a general copying machine is 400 dpi, one pixel is 64 μm. In this embodiment, the image lines of the first visibility copy-preventing pattern have d + g + g of 76 μm, e + g + g of 76 μm, and f + g + g of 76 μm, and H that is equidistant up and down with respect to the basic line (10). 80 μm, d2 + g + g is 51 μm, e2 + g + g is 51 μm, f2 + g + g is 51 μm, and then the length of the non-image portion in the basic line direction is set to 80 μm. The latent image is not recognized by the naked eye, and, 25Myuemu～60myuemu range not resolved by a copying machine is a possible, d3 in this embodiment 36 .mu.m, e3 is 36 .mu.m, f3 was 36 .mu.m. Therefore, by subtracting the expansion value (3 + 3) μm of the image line in the basic line direction grasped by the test image line, d is 70 μm, e is 70 μm, f is 70 μm, d2 is 45 μm, e2 is 45 μm, and f2 is 45 μm. Become. The length of B is the value obtained by subtracting the expansion value (3 + 3) μm from the non-image portion 36 μm and the length 51 of the image portion, that is, (36−6) + 51 = 81. Substituting this into the equation (2),
1.2 × 81 × 106 ≦ 76 × 51 + 76 × 51 + 76 × 51 ≦ 1.4 × 81 × 106, and when calculated, it can be seen that 10303.2 ≦ 11628 ≦ 12020.4 and the relational range is satisfied. .
[0055]
  The numerical values used in the present embodiment are not limited to this, and can be changed as necessary.
[0056]
  In the present embodiment, the image line of the first non-visible copy protection pattern is described in the same periodicity and the same period for the three periodic break lines, but the present invention is not limited to this embodiment. The image line of the first invisibility anti-copying pattern is not limited to the above, and the image line of the latent imaged portion is branched into a plurality of equal distances with respect to the basic line direction, and is branched into the plurality. The line segments are composed of fixed line breaks made up of lines with shapes arranged at regular intervals. Of the fixed line break lines where latent images are applied, Consists of non-drawing partsPredetermined lengthThe sum of the image area of the portion corresponding to is the solid line portion of the portion where the latent image is not applied, in the basic line direction.Predetermined lengthAs long as it is equal to the image area of the portion corresponding to the same length, the respective areas branched into a plurality may be different.
  The image line of the first visibility anti-copying pattern is the same area as the image line of the three non-copies of the first non-copying anti-copying pattern. However, the present invention is not limited to this embodiment, and the image line of the first visibility copy-preventing pattern is based on the image line of the portion where the latent image is applied as a reference line direction. Divided into a plurality of equidistant lines, each of the plurality of branched lines is composed of a fixed period break line composed of lines arranged at regular intervals. Of which, it consists of a line part and a non-line part branched in the basic line direction.Predetermined lengthThe sum of the image area of the portion corresponding to is the solid line portion of the portion where the latent image is not applied, in the basic line direction.Predetermined lengthAs long as it is larger than the image area of the portion corresponding to the same length, the respective areas branched into a plurality may be different. In addition, the same effect appears even when the first non-visible copy-prevention pattern image line and the first visibility copy-protection pattern image line are bifurcated constant-periodic break lines. Further, the image line of the portion where the latent image is applied is branched into a plurality of equal distances with the basic line direction as a reference, and at least one of the image lines branched into the plurality is branched into other image lines. WhenShapes arranged at different periodsIf the second non-visible copy prevention pattern or the second visibility copy prevention pattern of the image line is used, the latent image effect is further improved.
[0057]
  The anti-copying pattern designed by CGS uses a commercially available laser plotter to create a film master for plate making, and then makes a printing plate using a commercially available positive type PS plate. On the paper, commercially available offset ink (pink), the adjustment of the printing device is equivalent to general lithographic offset printing, and offset printing is performed without any special adjustment to obtain the printed matter shown in FIG.
[0058]
  When the printed matter in FIG. 9 is visually observed, the observer sees that the image line (7) of the first non-visible copy protection pattern, which is the image line of the portion where the latent image has been applied, is a periodic break line. Nevertheless, by recognizing the image as if it were one continuous line in the direction of the basic line, the image line of the first non-visible copy protection pattern could not be identified at all by the naked eye. It is possible. Further, since the image line (8) of the first visibility copy-preventing pattern is darker than the image line (6) of the portion where no latent image is applied, the image line of the first visibility copy-protection pattern is displayed. The line is recognizable. Accordingly, in the first non-visible copy prevention pattern image line (7), unless the observer tries to enlarge the printed image line, the first non-visible image line (7) of the anti-copying pattern. The image line (8) of the first visibility copy-preventing pattern is a constant periodic break line, but unless it attempts to enlarge, it is a single thick line. At first glance, it appears as a printed matter of the first visibility of the image line (8) of the anti-copying pattern and the image line (6) of the portion where no latent image is applied.
[0059]
  FIG. 10 shows a reproduction of the printed product of FIG. 9 reproduced by a color copying machine (for example, Canon CLC900 type, Ricoh PATER 750 type, Minolta CF900). The first non-visible copy-preventing pattern image (7 ') shown in FIG. 10 that faces the first non-visible copy-proof pattern image (7) shown in FIG. The reproduction becomes impossible, and there is a difference in density between the image line (7 ') of the first non-visible copy prevention pattern and the image line (6') of the portion where no latent image is applied, and the first non-visible copy prevention The image line (7 ′) of the pattern is almost the same color as the background color, and can be recognized with the naked eye as if the image line (7 ′) of the first invisible copy protection pattern is developed. In addition, the copied first visibility anti-copy pattern image line (8 ′) of FIG. 10 that faces the image line (8) of the first visibility anti-copy pattern shown in FIG. The density difference is the same as the image line (6 ′) of the portion not subjected to the image, and the image line (8 ′) of the first visibility copy-preventing pattern is the image line of the image line (6 ′) of the portion not subjected to the latent image. Thus, the image line (8 ') of the first visibility copy-preventing pattern is completely indistinguishable with the naked eye. Therefore, it is obvious at a glance that it is a duplicate using a copying machine, and authenticity determination is possible.
[0060]
【The invention's effect】
  In the present invention, as described above, since the first non-visibility copy prevention pattern and the first visibility copy prevention pattern subdivide the image line portion, the image line of the portion where no latent image is applied and When the printed matter formed by the image line of the first invisibility anti-copying pattern and the image line of the first visibility anti-copying pattern is copied by a copying machine, the latent image is expressed and the image of the portion where the latent image is not applied Assimilation with lines can be made clearer.
[0061]
  Further, at least one period of the segmented image lines of the first invisibility anti-copying pattern and the first visibility anti-copying pattern is at least one.By having a different periodThe expression of the latent image and the assimilation with the image line of the portion where the latent image is not applied can be further clarified.
[0062]
  In addition, the non-visible anti-copying pattern and the visible anti-copying pattern are incorporated into a single printed material at the same time, so that the lines of the non-visible anti-copying pattern cannot be identified with the naked eye. When copied on a machine, the non-visible copy-prevention pattern line is not reproduced faithfully, a latent image appears, and the visible copy-prevention pattern line can be identified before copying. When copying, the image is assimilated with the image line of the portion where no latent image is applied. In this way, when copying with a copying machine, the visual impression changes due to the difference in the visual state of the copy of the non-visible copy-preventing pattern line and the visible copy-preventing pattern line. It is easy to discriminate the product, and it has the effect of preventing forgery and alteration by the copying machine.
[0063]
  Furthermore, since printing can be easily performed by monochromatic printing, the cost can be reduced, and it is not necessary to overprint the camouflage pattern. It is easy to adjust the density management and image line thickness at the time of printing, and has an effect of preventing copying even if the allowable range for printing is wide.
[0064]
  In addition, printed matter in which other types of anti-counterfeiting measures such as moire patterns are used on the same image line for the background pattern and the chromatic pattern can be used, and even if embossing (irregularity) is given after printing, the effect of preventing copying may be reduced. Absent. As a result, the present invention can be applied to securities such as banknotes, stock certificates, bonds, etc., various certificates, important documents, and the like that are subject to counterfeiting and alteration by a copying machine.
[Brief description of the drawings]
FIG. 1 is a copy prevention pattern and a partially enlarged view of the present invention.
FIG. 2 is an enlarged view of an image line of a portion where no latent image is applied and an image line of a first non-visible copy protection pattern.
FIG. 3 is an enlarged view of an image line of a portion where a latent image is not applied and an image line of a first visibility copy-preventing pattern.
FIG. 4 is an image line configuration of a portion having a second non-visibility anti-copying pattern or an image line of a portion having a second visibility anti-copying pattern.
FIG. 5 is an explanatory diagram of a region where the image lines of the line portion of the fixed line break of the image lines of the first visibility and the first non-visibility copy prevention pattern intersect each other.
FIG. 6 is an explanatory diagram of a region where the image lines of the line portion of the fixed line break line of the image lines of the first visibility and the first invisibility copy prevention pattern intersect each other.
FIG. 7 is an explanation of a straight line that intersects the basic line at a substantially right angle at the intersection of the basic line and the contour line of the latent image or at the intersection of the image line part and the non-image line boundary line on the fixed periodic break line. Figure.
FIG. 8 is an image line configuration diagram and a partially enlarged view of two-dimensional data of a copy prevention pattern according to the present invention.
FIG. 9 is a view showing a printed matter having a copy prevention pattern according to the present invention.
FIG. 10 is a view showing a reproduction of a printed matter having a copy prevention pattern according to the present invention.
FIG. 11 is a pattern of a conventional anti-copying printed matter and a partially enlarged view of the pattern.
FIG. 12 is a pattern of a copy of a conventional copy prevention printed matter and a partially enlarged view of the pattern.
[Explanation of symbols]
1 Conventional copy prevention printed matter
2 Pattern on the entire printed surface
3 Screen pattern of non-reproduced dense structure on printed matter
3 'non-reproduced dense screen pattern on the copy
4 Reproduced coarse screen pattern on printed material
4 'Coarse screen pattern reproduced on a copy
5 Interference with the boundary of the latent image
6 Lines where the latent image is not applied
7 Image line of the first non-visible copy protection pattern
8 Image line of the part with the first visibility anti-copying pattern
9a Boundary line of the first periodic break line of the image line of the first non-visible copy protection pattern
9b The boundary line of the periodic break line of the image line of the first visibility anti-copying pattern
9c Boundary line between the non-image portion and the non-image portion on the fixed line break of the image line of the first non-visible copy prevention pattern
9d Boundary line between the image area and the non-image area on the fixed line break of the image line of the first visibility copy prevention pattern
10 Basic line
11 Solid line where no latent image is applied
12 Contour line of latent image
13a Intersection of the basic line and the outline of the latent image
13b Intersection of the basic line and the outline of the latent image
13c Intersection of the image line portion on the image line of the first invisible copy protection pattern, the boundary line of the non-image line portion, and the basic line
13d Intersection of the boundary line and the basic line between the image area and the non-image area on the image line of the first visibility anti-copying pattern
14 First non-visible copy protection pattern figure
15 First visibility anti-copying graphic
16 Outline of the image line of the first invisibility anti-copying pattern
17 Outline of image line of first visibility anti-copying pattern
18 Wavy line basic line consisting of spline curves
A Line width in the direction perpendicular to the solid basic line where the latent image is not applied
B. First periodic visibility and first invisibility of anti-copying pattern periodic breakPredetermined length in the basic line direction
H Equal distance from the base line
H2 b, c, e, f length centerline
T different periods
S deviation
a Length in the direction perpendicular to the basic line of the image portion of the first periodic invisible copy-preventing pattern
b The line width in the direction perpendicular to the line portion of the periodic break line with the equidistant H as the center line (H2) with respect to the basic line (10) of the first non-visible copy protection pattern
c The line width in the direction perpendicular to the line portion of the periodic break line with the equidistant H as the center line (H2) with respect to the basic line (10) of the first invisible copy protection pattern
d Length in the direction perpendicular to the basic line of the image line portion of the periodic break line of the first visibility anti-copying pattern
e Line width in the direction perpendicular to the line portion of the periodic break line with the equidistant distance H as the center line (H2) with respect to the basic line (10) of the first visibility anti-copying pattern
f Line width in a direction perpendicular to the line portion of the periodic break line with the equidistant H as the center line (H2) with respect to the basic line (10) of the first visibility anti-copying pattern
a2 The length in the direction of the basic line of the image line a of the first non-visible copy protection pattern
b2 The length in the basic line direction of the image line b of the first non-visible copy protection pattern
c2 Length of the first invisible copy-protection pattern image line c in the basic line direction
d2 The length in the basic line direction of the image line d of the first visibility anti-copying pattern
e2 Length in the basic line direction of the image line e of the first visibility anti-copying pattern
f2 Length in the basic line direction of the image line f of the first visibility anti-copying pattern
a3 The length in the basic line direction of the non-image portion of the periodic cut-off line of the first non-visible copy prevention pattern with respect to a
b3 The length in the basic line direction of the non-image portion of the periodic cut-off line of the first non-visible copy protection pattern with respect to b
c3 The length in the basic line direction of the non-image portion of the periodic break line of the first non-visible copy protection pattern with respect to c
d3 The length in the basic line direction of the non-image portion of the periodic break line of the copy prevention pattern having the first visibility with respect to d
e3 The length in the basic line direction of the non-image portion of the periodic cut line of the copy-preventing pattern having the first visibility with respect to e
f3 The length in the basic line direction of the non-image portion of the periodic break line of the copy-preventing pattern having the first visibility with respect to f
g Expansion value (or contraction value) generated around the image line

Claims

A pattern composed of one or a plurality of straight lines or curved lines, and a plurality of lines at equal distances with reference to the basic line direction as solid lines for the lines where the latent image is not applied. The line is divided into a plurality of lines, each of which is formed of a fixed period break line composed of lines having a shape arranged at regular intervals. the sum of the image line area of a portion corresponding to a predetermined length consisting of the image area and the non-image area that is branched to the line direction, of the solid line portions not subjected to latent image, the predetermined in the basic line direction length by configuring in periodic break lines greater than streaked area of the portion corresponding to the same length to be printed matter having a copy preventing pattern portion which has been subjected to the latent image to be copied is invisible.

A pattern composed of one or a plurality of straight lines or curved lines, and a plurality of lines at equal distances with reference to the basic line direction as solid lines for the lines where the latent image is not applied. Branching into a plurality of branching lines, at least one of the drawing lines is composed of a fixed periodic break line consisting of a shape of a line arranged in a different period from the other branching drawing lines, Of the fixed line breaks of the part where the latent image is applied, the sum of the image area of the part corresponding to the predetermined length consisting of the image part and the non-image part branched in the basic line direction gives the latent image. Of the solid line of the non-existing part, the part where the latent image is applied when copied by comprising a fixed periodic break line equal to the image area of the part corresponding to the same length as the predetermined length in the basic line direction Printed matter having a copy-preventing pattern that makes it visible .

A pattern composed of one or a plurality of straight lines or curved lines, and a plurality of lines at equal distances with reference to the basic line direction as solid lines for the lines where the latent image is not applied. Branching into a plurality of branching lines, at least one of the drawing lines is composed of a fixed periodic break line consisting of a shape of a line arranged in a different period from the other branching drawing lines, Of the fixed line breaks of the part where the latent image is applied, the sum of the image area of the part corresponding to the predetermined length consisting of the image part and the non-image part branched in the basic line direction gives the latent image. Of the solid line of the non-existing portion, the portion where the latent image is applied when copied by comprising a fixed periodic break line larger than the image area of the portion corresponding to the same length as the predetermined length in the basic line direction Printed matter that has a copy protection pattern that makes it impossible to see .

A pattern composed of one or a plurality of straight lines or curved lines, and a plurality of lines at equal distances with reference to the basic line direction as solid lines for the lines where the latent image is not applied. The line is divided into a plurality of lines, each of which is formed of a fixed period break line composed of lines having a shape arranged at regular intervals. The sum of the image area of the portion corresponding to the first predetermined length consisting of the image portion and the non-image portion branched in the line direction is the solid line portion of the portion not applied with the latent image in the basic line direction. Of the first visibility pattern configured with a fixed periodic break line larger than the image area of the portion corresponding to the same length as the first predetermined length, and the fixed periodic break line of the portion subjected to the latent image , The image area of the portion corresponding to the second predetermined length composed of the image line portion and the non-image line portion branched in the basic line direction A first periodic line that is equal to the image line area of a portion corresponding to the same length as the second predetermined length in the basic line direction among the solid lines of the portion where no latent image is applied. A printed matter having a copy prevention pattern in which the first visibility pattern becomes invisible when copied by providing a non-visibility pattern, and the first invisibility pattern becomes visible.

A pattern composed of one or a plurality of straight lines or curved lines, and a plurality of lines at equal distances with reference to the basic line direction as solid lines for the lines where the latent image is not applied. Branching into a plurality of branching lines, at least one of the drawing lines is composed of a fixed-period break line composed of lines of a shape arranged with a different period from the other branching drawing lines, The sum of the image area of the portion corresponding to the first predetermined length composed of the image line portion and the non-image line portion branched in the basic line direction among the fixed-cycle break lines of the portion subjected to the latent image is the latent image. A second visibility pattern constituted by a periodic break line larger than the image area of the portion corresponding to the same length as the first predetermined length in the basic line direction among the solid lines of the portion where no image is applied; Among the fixed line breaks of the part where the latent image has been applied, the line consists of an image line part and a non-image line part branched in the basic line direction. Streaks area of a portion corresponding to a second predetermined length A second line constituted by a constant periodic break line whose total sum is equal to an image area of a portion corresponding to the same length as the second predetermined length in the basic line direction among solid lines of a portion where no latent image is applied; By providing a non-visible pattern, a printed matter having a copy-preventing pattern in which the second non-visible pattern becomes invisible when copied, and the second non-visible pattern becomes visible.

A pattern composed of one or a plurality of straight lines or curved lines, and a plurality of lines at equal distances with reference to the basic line direction as solid lines for the lines where the latent image is not applied. The line is divided into a plurality of lines, each of which is formed of a fixed period break line composed of lines having a shape arranged at regular intervals. The sum of the image area of the portion corresponding to the first predetermined length consisting of the image portion and the non-image portion branched in the line direction is the solid line portion of the portion not applied with the latent image in the basic line direction. A first visibility pattern configured with a periodic break line larger than an image area of a portion corresponding to the same length as the first predetermined length;
Among the plurality of branched lines, at least one or more lines are constituted by fixed periodic break lines made up of lines having shapes arranged at different periods from other branched lines, and the latent image is applied. The sum of the image area of the portion corresponding to the second predetermined length composed of the image line portion and the non-image line portion branched in the basic line direction among the fixed-cycle break lines of the portion that has not been subjected to the latent image Providing a second non-visibility pattern composed of a periodic break line equal to the image area of the portion corresponding to the same length as the second predetermined length in the basic line direction among the solid lines of the portion Thus, when a copy is made, the first visibility pattern becomes invisible, and the printed matter has a copy prevention pattern in which the second invisibility pattern becomes visible.

A pattern composed of one or a plurality of straight lines or curved lines, and a plurality of lines at equal distances with reference to the basic line direction as solid lines for the lines where the latent image is not applied. Branching into a plurality of branching lines, at least one of the drawing lines is composed of a fixed-period break line composed of lines of a shape arranged with a different period from the other branching drawing lines, The sum of the image area of the portion corresponding to the first predetermined length composed of the image line portion and the non-image line portion branched in the basic line direction among the fixed-cycle break lines of the portion subjected to the latent image is the latent image. A second visibility pattern constituted by a periodic break line larger than the image area of the portion corresponding to the same length as the first predetermined length in the basic line direction among the solid lines of the portion where no image is applied; ,
The plurality of branched lines are composed of fixed-period breaks composed of lines that are arranged at regular intervals, and branch in the basic line direction among the fixed-period breaks of the latent imaged portion. The sum of the image area of the portion corresponding to the second predetermined length composed of the image line portion and the non-image line portion is the second predetermined value in the basic line direction among the solid lines where the latent image is not applied. By providing a first non-visibility pattern composed of a constant periodic break line equal to the image area of the portion corresponding to the same length as the length of the image, the second visibility pattern cannot be visually recognized when copied. A printed matter having a copy prevention pattern in which the first invisibility pattern is visible.