JP2004066579A - Intaglio printing plate, its manufacturing method, and intalgio printed matter using the printing plate - Google Patents
Intaglio printing plate, its manufacturing method, and intalgio printed matter using the printing plate Download PDFInfo
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Abstract
Description
【０００１】
【発明の属する技術分野】
本発明は、特殊形状の凹部を有する凹版版面及びその作製方法並びにそれを利用した複製防止効果を有する凹版印刷物に関するものである。
【０００２】
【従来の技術】
凹版印刷方式は、彫刻を施した凹版版面に凹版インキを塗布し、凹部の線の中に凹版インキが詰め込まれ、凹版版面の表面のインキを拭き取り凹部のインキのみを残し、紙の上から圧力を加えることによって紙が圧力によって版面の凹部に少し押し込まれ、凹部のインキが紙の表面に盛り上がった状態で印刷される。このようなインキが盛り上がった状態で紙に印刷されることによって、芸術性が求められる印刷物、偽造防止が求められる印刷物に利用されている。
【０００３】
版としては直刻凹版又は食刻凹版等があり、原版の製版方法としては手彫刻法による方法と機械彫刻による方法があり、金属版に彫刻する方法と、彫刻後化学腐蝕で仕上げる方法が一般的である。凹版版面は原版から転写法又は電鋳法によって作られる。
【０００４】
従来の凹版画線の形状の断面図を図１に示す。図１に示すように従来の凹版画線の形状は基材（１）に対して画線（Ｘ）は、四角形の形状、画線（Ｙ）は、三角形の形状、画線（Ｚ）は、楕円の形状であった。
【０００５】
よって、図２に示すように図１に示したそれぞれの画線を作製するための凹版版面の断面形状は、図１で示した画線（Ｘ）の版面はＸ’に示すような四角形の形状であり、画線（Ｙ）の版面はＹ’に示すような三角形の形状であり、画線（Ｚ）の版面はＺ’に示すよう楕円の形状となる必要があった。
【０００６】
上記図１に示す画線は、印刷分野で一般的に行われている腐食法で作製した凹版版面を用いて印刷することにより或いは金属加工において一般的に行われている腐食法で作製した版を用いてホットスタンプすることにより容易に得ることができる。このため、悪意で銀行券、株券、債権、商品券等の有価証券類、出入国証、登録証等の証書類及び重要書類等の印刷物又はＩＤカード類などを偽造或いは変造しようとする者が、容易にこれを真似することができるという難点があった。
【０００７】
このようなことから、一本一本の画線を複雑化した印刷物を得るための凹版版面の作製が望まれてきている。しかしながら、凹版版面を作製するにあたり、従来の腐食、ビュラン、機械彫刻では作成することが困難であった。
【０００８】
【発明が解決しようとする課題】
以上のことから、本発明は前述した問題点を解決することを目的としたもので、偽造或いは変造に対して、より効果が高くしかも容易に真似することのできない技術の開発及び複写機により複写されない画線の開発として、従来の凹版画線のインキの盛による優れた指感性や真偽判別効果だけではなく、凹版画線が立体である特徴を活かし、一本一本の画線形状を三次元的に複雑化することが望まれてきている。よって、一本一本の画線形状を三次元的に複雑化するためには、その画線を印刷するための凹版版面を作成する必要があった。
【０００９】
本発明は上記の問題点を鑑みてなされたもので、凹版版面において、凹版版面は、複数本の凹部を有し、複数本の凹部のうち、少なくとも一本以上の凹部は、凹部の深さ方向に伴い、凹部の幅が狭くなり、長さ方向は波状に変化するように構成した特殊形状の凹部を有する凹版版面で印刷した印刷物は複製防止効果を有する凹版印刷物になり得ることを見出した。
【００１０】
また、凹版版面の凹部は、レーザ彫刻法によって作製されたことによって上記記載の複雑な凹版版面の凹部を作製できることを見出した。本発明は上記記載の凹版版面及びその作製方法並びにそれを利用した凹版印刷物を提案するものである。
【００１１】
【課題を解決するための手段】
本発明は、凹版版面において、前記凹版版面は、複数本の凹部を有し、前記複数本の凹部のうち、少なくとも一本以上の凹部は、前記凹部の深さ方向に伴い、凹部の幅が狭くなり、長さ方向は波状に変化するように構成されたことを特徴とする凹版版面である。
【００１２】
また、本発明は、前記凹部の上端部にあたるインキ転移部の凹部の幅が一定で構成されていることを特徴とする凹版版面である。
【００１３】
また、本発明は、前記複数本の凹部で、文字、記号、数字、図柄、又は地紋模様を構成することを特徴とする凹版版面である。
【００１４】
また、本発明は、凹版版面の作製方法において、前記凹版版面を、レーザ彫刻機によって、複数本の凹部で形成し、前記複数本の凹部の内、少なくとも一本以上の凹部は、前記凹部の深さ方向に伴い、凹部の幅が狭くなり、長さ方向は波状に変化するように形成させることを特徴とする凹版版面の作製方法である。
【００１５】
また、本発明は、前記凹部の上端部にあたるインキ転移部の凹部の幅が一定であるように形成させることを特徴とする凹版版面の作製方法である。
【００１６】
また、本発明は、前記複数本の凹部で、文字、記号、数字、図柄、又は地紋模様を形成することを特徴とする凹版版面の作製方法である。
【００１７】
また、本発明は、前記凹版版面を用いて、凹版印刷機で印刷されたことを特徴とする凹版印刷物である。
【００１８】
【発明の実施の形態】
以下に、本発明に係る凹版版面及びその作製方法並びにそれを利用した凹版印刷物について図面を用いて説明する。また、本発明に係る凹版版面及びその作製方法並びにそれを利用した凹版印刷物は、本実施の形態に限定されるものではなく、本発明の係る特許請求の範囲に記載した技術事項の範囲内であれば、各種の態様を採用することができる。
【００１９】
図面によって本発明の凹版印刷物の一例を説明する。図３は、基材（１）の上に本発明の凸状画線（２）を形成させた、印刷物（Ｆ）である。図３に示すように凸状画線（２）は、凸状画線（２）の高さ方向（３）のインキの盛りが高くなるに伴い、画線幅（４）が狭くなり、長さ方向の画線形状は波状（５）に変化する凸状画線（２）で構成される。この場合、凸状画線の底部にあたるインキ転移部の画線幅（４’）が一定であるが、凸状画線の底部にあたるインキ転移部の画線幅（４’）は一定でなくても良い。また、画線の断面形状（６）は台形を有している。
【００２０】
図３で示した凹版画線を印刷するための凹版版面を図４に示す。凹版版面は、版材（７）に図３で示した凸状画線（２）となる凹部（１２）は凹部の深さ方向（９）が深くなるに伴い、凹部の幅（１０）が狭くなり、長さ方向の凹部形状は波状（１１）に変化する凹部で構成される。この場合、凹部の上端部にあたるインキ転移部の凹部の幅（１０’）が一定であるが、凹部の上端部にあたるインキ転移部の凹部の幅（１０’）が一定でなくても良い。また、破線で示した凹部の断面形状（６）は台形を有している。
【００２１】
図５（ａ）乃至図６（ｃ）に本発明の凸状画線のその他の形状について例を示す。図５（ａ）は、一定の画線高さ（Ｅ）の凸状画線（２）であり、インキ転移部である底部の画線幅（Ａ）と上端部の画線幅（Ｂ）がある特定の値をもち、長さ方向に波状に変化し、画線の上端部と底部をつなぐ側面部分（８）は、連続的な膨らんだ曲面を有し、凸状画線（２）の断面形状（１１）は図５（ａ）に示すように膨らんだ四角形状の場合の画線形状である。
【００２２】
図５（ｂ）は、一定の画線高さ（Ｅ）の凸状画線（２）であり、インキ転移部である底部の画線幅（Ａ）と上端部の画線幅（Ｂ）がある特定の値をもち、長さ方向に波状に変化し、画線の上端部と底部をつなぐ側面部分（８）は、連続的な凹んだ曲面を有し、凸状画線（２）の断面形状（１１）は図５（ｂ）に示すように凹んだ四角形状の場合の画線形状である。
【００２３】
図６（ａ）は、一定の画線高さ（Ｅ）の凸状画線（２）であり、インキ転移部である底部の画線幅（Ａ）がある特定の値をもち、その上端部が長さ方向に波状に変化し、画線の上端部と底部をつなぐ側面部分（８）は、連続的な直線を有し、凸状画線（２）の断面形状（１１）は図６（ａ）に示すとおり三角形状の場合の画線形状である。
【００２４】
図６（ｂ）は、一定の画線高さ（Ｅ）の凸状画線（２）であり、インキ転移部である底部の画線幅（Ａ）と上端部の画線幅（Ｂ）がある特定の値をもち、長さ方向に波状に変化し、画線の上端部と底部をつなぐ側面部分（８）は、連続的な膨らんだ曲面を有し、凸状画線（２）の断面形状（１１）は図６（ｂ）に示すとおり膨らんだ三角形状の場合の画線形状である。
【００２５】
図６（ｃ）は、一定の画線高さ（Ｅ）の凸状画線（２）であり、インキ転移部である底部の画線幅（Ａ）と上端部の画線幅（Ｂ）がある特定の値をもち、長さ方向に波状に変化し、画線の上端部と底部をつなぐ側面部分（８）は、連続的な凹んだ曲面を有し、凸状画線（２）の断面形状（１１）は図６（ｃ）に示すとおり凹んだ三角形状の場合の画線形状である。
【００２６】
図５（ａ）乃至図６（ｃ）に示した本発明の凸状画線の凹版版面の形状を図７（ａ）乃至図８（ｃ）に示す。図７（ａ）は、図５（ａ）の凹版版面であり、一定の深度（Ｅ’）の凹部（１２）であり、インキ転移部である凹部の上端部の幅（Ａ’）と底部の幅（Ｂ’）がある特定の値をもち、長さ方向に波状に変化し、凹部の上端部と底部をつなぐ側面部分（８）は、連続的な膨らんだ曲面を有し、凹部（１２）の断面形状（１１）は図７（ａ）に示すように膨らんだ四角形状の凹部形状である。
【００２７】
図７（ｂ）は、図５（ｂ）の凹版版面であり、一定の深度（Ｅ’）の凹部（１２）であり、インキ転移部である凹部の上端部の幅（Ａ’）と底部の幅（Ｂ’）がある特定の値をもち、長さ方向に波状に変化し、凹部の上端部と底部をつなぐ側面部分（８）は、連続的な凹んだ曲面を有し、凹部（１２）の断面形状（１１）は図７（ｂ）に示すように凹んだ四角形状の凹部形状である。
【００２８】
図８（ａ）は、図６（ａ）の凹版版面であり、一定の深度（Ｅ’）の凹部（１２）であり、インキ転移部である凹部の上端部の幅（Ａ’）がある特定の値をもち、その底部が長さ方向に波状に変化し、凹部の上端部と底部をつなぐ側面部分（８）は、連続的な直線を有し、凹部（１２）の断面形状（１１）は図８（ａ）に示すように三角形の凹部形状である。
【００２９】
図８（ｂ）は、図６（ｂ）の凹版版面であり、一定の深度（Ｅ’）の凹部（１２）であり、インキ転移部である凹部の上端部の幅（Ａ’）がある特定の値をもち、その底部が長さ方向に波状に変化し、凹部の上端部と底部をつなぐ側面部分（８）は、連続的な膨らんだ曲面を有し、凹部（１２）の断面形状（１１）は図８（ｂ）に示すように膨らんだ三角形状の凹部形状である。
【００３０】
図８（ｃ）は、図６（ｃ）の凹版版面であり、一定の深度（Ｅ’）の凹部（１２）であり、インキ転移部である凹部の上端部の幅（Ａ’）がある特定の値をもち、その底部が長さ方向に波状に変化し、凹部の上端部と底部をつなぐ側面部分（８）は、連続的な凹んだ曲面を有し、凹部（１２）の断面形状（１１）は図８（ｃ）に示すように凹んだ三角形状の凹部形状である。
【００３１】
また、図５（ａ）乃至図６（ｃ）の凸状画線（２）において、図９に示すように本発明の凸状画線（２）の凸表面の幅方向の画線幅（Ｂ）の１／２の幅とその振幅Ｃを加えた値が、凹版画線形状の都合上、画線の底部の幅（Ａ）と同じかそれよりも小さくする必要がある。本発明の凸状画線の凸表面の幅方向の画線幅（Ｂ）の１／２の幅とその振幅（Ｃ）を加えた値が、凹版画線形状の都合上、画線の底部の幅（Ａ）の１／２の幅より大きいと、インキ転移に支障が生じ、階調の優れた潜像模様が出現しにくくなり、本発明の効果を奏することができなくなる。
【００３２】
よって、凹版版面となる図７（ａ）乃至図８（ｃ）の凹部（１２）において、図１０に示すように本発明の凹部（１２）の底部の幅方向の幅（Ｂ’）の１／２の幅とその振幅（Ｃ’）を加えた値が、凹版画線形状の都合上、凹部（１２）の上端部の幅（Ａ’）と同じかそれよりも小さくする必要がある。本発明の凹部の底部の幅方向の幅（Ｂ’）の１／２の幅とその振幅（Ｃ’）を加えた値が、凹版画線形状の都合上、凹部の上端部の幅（Ａ’）の１／２の幅よりより大きいと、インキ転移に支障が生じ、階調の優れた潜像模様が出現しにくくなり、本発明の効果を奏することができなくなる。
【００３３】
本発明の凹版画線のインキの盛の高さは、印刷品質上問題がなければ特に限定されるわけではないが、印刷物の品質等から判断すると、前記凸状の画線の高さが５μｍ以上で３００μｍ以下であることが好ましい。本発明の凹版画線で、文字、記号、数字、図柄、地紋模様を構成する場合、底部にあたるインキ転移部の幅方向の画線幅が１０μｍ以上から６００μｍ以下であることが好ましい。底部にあたるインキ転移部の幅方向の画線幅が１０μｍ以下、もしくは６００μｍ以上である場合、また、画線の高さが５μｍ以下、もしくは３００μｍ以上では、本発明の凹版版面の作製が困難といえる。
【００３４】
本発明の凹版版面は、従来から印刷分野で一般的に行われているいわゆる腐食法で作製した凹版版面等では、連続する凸状の画線の一部の断面形状を周期的に変えることができないので困難である。また、ＮＣ彫刻機（数値制御彫刻機あるいは数値制御工作機）による画線の作製方法においても、彫刻バイトが版面材料へ直接接触し凹版画線の形状となる溝を加工するため、断面の形状がバイトの形状に大きく依存する。このため、画線の断面形状を変えるごとに、バイトの形状もその都度違うものに交換して加工しなければならず、作業性が低下してしまうとともに、バイト自体を作製するコストもかかってしまう。そこで、非接触で加工の自由度が高いレーザ加工機を用いて凹版版面を作製するのが好ましい。
【００３５】
本発明の印刷物は、一本一本の画線形状を三次元的に複雑化した特殊な形状を有しているため、偽造者が複製しようと思っても上記記載の画線形状を有した印刷物を作成しようと試みても容易に作製することができないため、偽造防止効果を有する貴重印刷物に利用できる。また、複写機により複写されない画線となるため、複写防止効果にも優れる。更に、凹版画線のインキの盛による優れた指感性や真偽判別効果だけではなく、画像を構成する凸状の画線の断面形状の周期的な変化、凸状の画線の表面状態及び凸状の画線を作製する材料の光学的性質によって、この凸状の画線に当たった光の反射状態が異なることを応用したもので、連続する凸状の画線の断面形状において、その上端部をインキ転移部である画線底部の幅方向に振幅させ、その断面形状を周期的に変形させて基材（媒体）上に作製した画像であり、本発明の連続する凸状の画線の上端部の幅、振幅、周期を変化させることにより、画線の上端部と底部をつなぐ側面部分において、当たった光が多く反射する部分が明るく見え、当たった光が少なく反射する部分は暗く見えるという明暗のパターンに変化が生じるため、凹版画線で階調を有する印刷物が得られ、真偽判別効果にも優れる印刷物が得られる。
【００３６】
本発明の凹版印刷物に用いる基材は、紙、プラスチック等、特に限定されるものではない。
【００３７】
本発明の凹版版面はエンボス版面としても利用できる。
【００３８】
本発明の凹版印刷物に用いる凹版インキは特に限定されないが、電子線硬化型、紫外線硬化型、酸化重合型、紫外線硬化型と酸化重合型の併用型等のインキが好ましい。
【００３９】
【実施例】
以下、実施例を用いて本発明を更に詳細に説明するが、本発明の内容は、これらの実施例の範囲に限定されるものではない。
【００４０】
（実施例１）
【００４１】
コンピュータ上で、作製した図１１に示す三次元の画線データ（Ｇ）を用い、レーザ彫刻で彫刻する凹部の深度（Ｅ’）に対し１回の彫刻で彫り下げることができる深さ（Ｊ）を設定し、（Ｊ）ごとに凹部の深さ方向の断面形状の層（Ｈ）を加工領域として抽出し、その抽出された加工領域の１層ごとに、レーザ光を走査線状に移動させて彫刻を行い、凹版原版を作製した。本発明の彫刻方向、彫刻回数は特に限定されるものではない。
【００４２】
得られた、原版を用いて凹版版面を作製し、通常の凹版インキによって凹版印刷機で基材に印刷した。得られた印刷物を図１２に示す。図１２は得られた印刷物に対して垂直方向から観察した場合の図である。
【００４３】
図１２の印刷物を傾けて観察すると図１３に示すように、画線表面に当たった光が多く反射する部分が明るく見え、当たった光が少なく反射する部分は暗く見えるという明暗のパターンに変化が生じ、観察者の目に入る光の反射状態に連続的な差異が生じるため、画線自体に階調を有しているように観察される。
【００４４】
本実施例１の印刷物を複写機（ＣＬＣ９００、キャノン社製）で複写し、複写した複写物を傾けて観察しても、画線自体に階調を有しているように観察されることはなかった。
【００４５】
【発明の効果】
本発明は、三次元的に複雑化した特殊な形状を有した凹版画線を作成するために、三次元的に複雑化した特殊形状の凹部を有する凹版版面が必要であり、レーザ彫刻によって容易に作製でき、凹版版面は、複数本の凹部を有し、複数本の凹部のうち、少なくとも一本以上の凹部は、凹部の深さ方向に伴い、凹部の幅が狭くなり、長さ方向は波状に変化するように構成した特殊形状の凹部を有する凹版版面で印刷した印刷物は複製防止効果を有する凹版印刷物となる。
【００４６】
本発明の印刷物は、一本一本の画線形状を三次元的に複雑化した特殊な形状を有しているため、偽造者が複製しようと思っても本発明の画線形状を有した印刷物を作成しようと試みても容易に作製することができないため、偽造防止効果を有する貴重印刷物に利用できる。また、複写機により複写されない画線となるため、複写防止効果にも優れる。更に、凹版画線のインキの盛による優れた指感性や真偽判別効果だけではなく、画像を構成する凸状の画線の断面形状の周期的な変化、凸状の画線の表面状態及び凸状の画線を作製する材料の光学的性質によって、この凸状の画線に当たった光の反射状態が異なることを応用したもので、連続する凸状の画線の断面形状において、その上端部をインキ転移部である画線底部の幅方向に振幅させ、その断面形状を周期的に変形させて基材（媒体）上に作製した画像であり、本発明の連続する凸状の画線の上端部の幅、振幅、周期を変化させることにより、画線の上端部と底部をつなぐ側面部分において、当たった光が多く反射する部分が明るく見え、当たった光が少なく反射する部分は暗く見えるという明暗のパターンに変化が生じるため、凹版画線で階調を有する印刷物が得られ、真偽判別効果にも優れる印刷物が得られる。
【００４７】
【図面の簡単な説明】
【図１】従来の凹版画線の形状を示す断面図である。
【図２】図１に示した凹版画線を印刷するための凹版版面を示す断面図である。
【図３】本発明の画線形状において、画線上端部がある特定の幅を有していない場合の寸法要素を示す図である。
【図４】図３に示した凹版画線の凹版版面を示す。
【図５】本発明の凹版画線の他の例を示す。
【図６】本発明の凹版画線の他の例を示す。
【図７】図５に示した凹版画線の凹版版面を示す。
【図８】図６に示した凹版画線の凹版版面を示す。
【図９】画線の上端部の波状変化の制限を示す。
【図１０】版面の底部の波状変化の制限を示す。
【図１１】コンピュータ上で作成したレーザ彫刻用画線データ、および彫刻方法を示す図である。
【図１２】本発明の画線を印刷した印刷物を真上から観察した図である。
【図１３】本発明の画線を印刷した印刷物を斜めから観察した図である。
【符号の説明】
１ 基材
２ 凸状画線
３ インキの高さ方向
４ 画線幅
４’ インキ転移部の画線幅
５ 波状
６ 画線の断面形状
７ 版材
８ 上端部と底部をつなぐ側面部分
９ 画線の深度方向
１０ 凹部の幅
１０’ インキ転移部の凹部の幅
１１ 波状
１２ 版面の凹部
Ａ 画線底部の幅
Ｂ 画線上端部の幅
Ｃ 画線上端部の振幅
Ｄ 画線上端部の周期
Ｅ 彫刻される画線の深度
Ａ’ 凹部の上端部の幅
Ｂ’ 凹部の底部の幅
Ｃ’ 凹部の底部の振幅
Ｄ’ 凹部の底部の周期
Ｅ’ 深度
Ｊ レーザ彫刻機により、一回で彫刻される深度
Ｆ 印刷物
Ｇ コンピュータ上で作成したレーザ彫刻データ
Ｈ 設定された彫刻深さＪごとの深さ方向の画線の断面形状
Ｘ，Ｙ、Ｚ 画線
Ｘ’、Ｙ’、Ｚ’ 凹部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an intaglio printing plate having a concave portion of a special shape, a method of manufacturing the same, and an intaglio printing product using the intaglio printing plate and having an effect of preventing duplication.
[0002]
[Prior art]
In the intaglio printing method, intaglio ink is applied to the engraved intaglio plate, the intaglio ink is packed into the lines of the intaglio, and the ink on the surface of the intaglio plate is wiped off, leaving only the ink in the intaglio plate. Is applied, the paper is slightly pushed into the concave portion of the plate surface by the pressure, and the ink in the concave portion is printed in a raised state on the surface of the paper. When such ink is printed on paper in a raised state, it is used for printed matter requiring artistic properties and printed matter requiring forgery prevention.
[0003]
There are direct engraved or engraved intaglio as the plate, and the method of making the original plate includes hand engraving and mechanical engraving.General methods include engraving on a metal plate and finishing by engraving after engraving. It is a target. The intaglio printing plate is made from the original plate by a transfer method or an electroforming method.
[0004]
FIG. 1 shows a cross-sectional view of the shape of a conventional intaglio image. As shown in FIG. 1, the shape of the conventional intaglio object is that the object (X) is a square shape, the object (Y) is a triangular shape, and the object (Z) is , In the shape of an ellipse.
[0005]
Therefore, as shown in FIG. 2, the cross-sectional shape of the intaglio printing plate for producing each image shown in FIG. 1 is a square as shown by X ′ in the image (X) shown in FIG. The shape of the object (Y) had a triangular shape as shown by Y ', and the image (Z) had to have an elliptical shape as shown by Z'.
[0006]
The image shown in FIG. 1 is obtained by printing using an intaglio printing plate surface produced by a corrosion method generally performed in the printing field or by a plate produced by a corrosion method generally performed in metalworking. And can be easily obtained by hot stamping. For this reason, anyone who maliciously falsifies or falsifies securities such as banknotes, stock certificates, receivables, gift certificates, printed documents such as immigration certificates, registration certificates and other important documents, and important documents etc. There was a drawback that this could be easily copied.
[0007]
For this reason, it has been desired to produce an intaglio printing plate surface for obtaining a printed matter in which each object is complicated. However, in making an intaglio printing plate, it was difficult to make it by conventional corrosion, burin, and mechanical engraving.
[0008]
[Problems to be solved by the invention]
In view of the above, it is an object of the present invention to solve the above-mentioned problems, and to develop a technology that is more effective and cannot be easily imitated against forgery or alteration, and to copy by a copying machine. In addition to the excellent finger sensation and the true / false discrimination effect of the intaglio printing ink in the conventional intaglio printing, the intaglio printing is made up of three-dimensional features. It has been desired to increase the complexity in three dimensions. Therefore, in order to three-dimensionally complicate the shape of each object, it is necessary to create an intaglio printing plate for printing the object.
[0009]
The present invention has been made in view of the above problems, and in the intaglio printing plate, the intaglio printing plate has a plurality of recesses, and among the plurality of recesses, at least one or more recesses has a depth of the recesses. In accordance with the direction, the width of the concave portion becomes narrower, and the length direction is found to be intaglio printed material having an intaglio printing surface having a specially shaped concave portion configured to change in a wavy manner, which has an anti-duplication effect. .
[0010]
In addition, the inventor has found that the concave portions of the intaglio printing plate surface can be formed by the laser engraving method to form the above-described complicated intaglio printing plate concave portions. The present invention proposes an intaglio printing plate described above, a method for producing the same, and an intaglio printed material using the same.
[0011]
[Means for Solving the Problems]
The present invention provides an intaglio printing plate surface, wherein the intaglio printing plate surface has a plurality of recesses, and among the plurality of recesses, at least one or more recesses are in the depth direction of the recesses, and the width of the recesses is reduced. An intaglio printing plate characterized in that it is configured to be narrow and change in a length direction in a wavy manner.
[0012]
The present invention is also an intaglio printing plate, wherein the width of the concave portion of the ink transfer portion corresponding to the upper end of the concave portion is configured to be constant.
[0013]
The present invention is also an intaglio printing plate, wherein the plurality of recesses constitute a character, a symbol, a number, a design, or a tint block pattern.
[0014]
Further, the present invention provides a method for producing an intaglio printing plate, wherein the intaglio printing plate is formed with a plurality of recesses by a laser engraving machine, and among the plurality of recesses, at least one or more recesses are formed of the recesses. This is a method of manufacturing an intaglio printing plate, characterized in that the width of the concave portion becomes narrower in the depth direction and the length direction is changed so as to change in a wavy manner.
[0015]
Further, the present invention is a method for producing an intaglio printing plate, wherein the width of the concave portion of the ink transfer portion corresponding to the upper end of the concave portion is formed to be constant.
[0016]
The present invention is also a method for producing an intaglio printing plate, wherein a letter, a symbol, a numeral, a pattern, or a tint block pattern is formed by the plurality of recesses.
[0017]
Further, the present invention is an intaglio printed material, wherein the intaglio printing is performed by using an intaglio printing plate.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an intaglio plate surface according to the present invention, a method for producing the intaglio plate, and an intaglio print using the intaglio plate surface will be described with reference to the drawings. Further, the intaglio printing plate surface and the method for producing the same and the intaglio printed material using the same are not limited to the present embodiment, but may fall within the technical scope described in the claims of the present invention. If so, various aspects can be adopted.
[0019]
An example of the intaglio print of the present invention will be described with reference to the drawings. FIG. 3 shows a printed matter (F) in which the convex image (2) of the present invention is formed on the base material (1). As shown in FIG. 3, the convex image (2) has a longer image line width (4) and a longer length as the height of the ink in the height direction (3) of the convex image (2) increases. The object shape in the vertical direction is composed of a convex object (2) that changes in a wave shape (5). In this case, the image width (4 ') of the ink transfer portion corresponding to the bottom of the convex image is constant, but the image width (4') of the ink transfer portion corresponding to the bottom of the convex image is not constant. Is also good. The cross-sectional shape (6) of the object has a trapezoidal shape.
[0020]
FIG. 4 shows an intaglio printing plate surface for printing the intaglio printing object shown in FIG. In the intaglio printing plate surface, the width (10) of the concave portion (12) becomes larger as the depth direction (9) of the concave portion (12), which becomes the convex image (2) shown in FIG. The shape of the concave portion becomes narrower and the concave portion in the longitudinal direction is formed of a concave portion that changes into a wave shape (11). In this case, the width (10 ') of the concave portion of the ink transfer portion corresponding to the upper end portion of the concave portion is constant, but the width (10') of the concave portion of the ink transfer portion corresponding to the upper end portion of the concave portion may not be constant. The cross-sectional shape (6) of the concave portion shown by the broken line has a trapezoidal shape.
[0021]
FIGS. 5A to 6C show examples of other shapes of the convex object of the present invention. FIG. 5A shows a convex image (2) having a constant image height (E). The image width at the bottom (A), which is the ink transfer portion, and the image width (B) at the upper end. Has a certain value, changes in a wavy manner in the length direction, the side portion (8) connecting the upper end and the bottom of the object has a continuous bulging curved surface, and the convex object (2) The cross-sectional shape (11) is an object shape in the case of a swelling quadrangular shape as shown in FIG.
[0022]
FIG. 5B shows a convex image (2) having a constant image height (E). The image width at the bottom (A) and the image width at the upper end (B), which are ink transfer portions. Has a certain value, changes in a wavy manner in the length direction, and a side portion (8) connecting the upper end and the bottom of the object has a continuous concave curved surface, and a convex object (2) The cross-sectional shape (11) is an object shape in the case of a concave square shape as shown in FIG. 5 (b).
[0023]
FIG. 6A shows a convex object line (2) having a constant object line height (E). The image line width (A) at the bottom, which is the ink transfer portion, has a specific value and the upper end thereof. The portion changes in a wavy manner in the length direction, the side portion (8) connecting the upper end and the bottom of the object has a continuous straight line, and the cross-sectional shape (11) of the convex object (2) is shown in FIG. As shown in FIG. 6 (a), this is an object shape in the case of a triangular shape.
[0024]
FIG. 6B shows a convex image (2) having a constant image height (E). The image width at the bottom (A) and the image width at the upper end (B), which are ink transfer portions. Has a certain value, changes in a wavy manner in the length direction, the side portion (8) connecting the upper end and the bottom of the object has a continuous bulging curved surface, and the convex object (2) The cross-sectional shape (11) is an object shape in the case of a bulging triangle as shown in FIG. 6 (b).
[0025]
FIG. 6C shows a convex image (2) having a constant image height (E). The image width at the bottom (A) and the image width at the upper end (B), which are ink transfer portions. Has a certain value, changes in a wavy manner in the length direction, and a side portion (8) connecting the upper end and the bottom of the object has a continuous concave curved surface, and a convex object (2) The cross-sectional shape (11) is an object shape in the case of a concave triangular shape as shown in FIG.
[0026]
FIGS. 7 (a) to 8 (c) show the shapes of the intaglio printing surfaces of the convex object of the present invention shown in FIGS. 5 (a) to 6 (c). FIG. 7 (a) is an intaglio printing plate surface of FIG. 5 (a), which is a concave portion (12) having a constant depth (E '), and a width (A') of an upper end portion and a bottom portion of the concave portion which is an ink transfer portion. Has a certain value, changes in a wavy manner in the length direction, and the side surface portion (8) connecting the upper end portion and the bottom portion of the concave portion has a continuous bulging curved surface, and the concave portion ( The cross-sectional shape (11) of 12) is a bulging quadrangular concave shape as shown in FIG.
[0027]
FIG. 7 (b) is the intaglio printing plate surface of FIG. 5 (b), which is a concave portion (12) having a constant depth (E '), and the width (A') of the upper end portion and the bottom portion of the concave portion which is the ink transfer portion. Has a certain value, changes in a wavy manner in the length direction, and the side surface portion (8) connecting the upper end portion and the bottom portion of the concave portion has a continuous concave curved surface, and the concave portion ( The cross-sectional shape (11) of 12) is a concave shape of a concave square shape as shown in FIG. 7B.
[0028]
FIG. 8A is an intaglio printing plate surface of FIG. 6A, which is a concave portion (12) having a constant depth (E ′), and has a width (A ′) of an upper end portion of the concave portion which is an ink transfer portion. It has a specific value, its bottom part changes in a wavy manner in the length direction, and the side part (8) connecting the upper end part and the bottom part of the concave part has a continuous straight line, and has a cross-sectional shape (11) of the concave part (12). 8) has a triangular concave shape as shown in FIG.
[0029]
FIG. 8B is an intaglio printing plate surface of FIG. 6B, which is a concave portion (12) having a constant depth (E ′), and has a width (A ′) of an upper end portion of the concave portion which is an ink transfer portion. It has a specific value, the bottom of which has a wavy shape in the longitudinal direction, the side portion (8) connecting the top and bottom of the recess has a continuous bulging curved surface, and the cross-sectional shape of the recess (12) (11) has a bulging triangular concave shape as shown in FIG. 8 (b).
[0030]
FIG. 8 (c) is the intaglio printing plate surface of FIG. 6 (c), which is a concave portion (12) having a constant depth (E ′), and has a width (A ′) at the upper end of the concave portion which is an ink transfer portion. It has a specific value, the bottom of which has a wavy shape in the length direction, and the side portion (8) connecting the top and bottom of the recess has a continuous concave curved surface, and the cross-sectional shape of the recess (12) (11) has a triangular concave shape as shown in FIG. 8 (c).
[0031]
Further, in the convex image (2) of FIGS. 5A to 6C, as shown in FIG. 9, the image width in the width direction of the convex surface of the convex image (2) of the present invention (see FIG. 9). The value obtained by adding the half width of B) and its amplitude C needs to be equal to or smaller than the width (A) of the bottom of the image due to the intaglio image shape. The value obtained by adding 1/2 of the width (B) of the image width in the width direction of the convex surface of the convex image of the present invention and its amplitude (C) to the bottom of the image due to the intaglio image shape. When the width (A) is larger than １ ／ of the width (A), the transfer of ink is hindered, a latent image pattern with excellent gradation is hardly produced, and the effect of the present invention cannot be achieved.
[0032]
Therefore, as shown in FIG. 10, in the concave portion (12) of FIGS. 7 (a) to 8 (c) serving as an intaglio plate surface, as shown in FIG. The value obtained by adding the width of / 2 and its amplitude (C ') needs to be equal to or smaller than the width (A') of the upper end portion of the concave portion (12) due to the intaglio image shape. The value obtained by adding the half width (B ') of the bottom of the concave portion of the present invention in the width direction (B') and the amplitude (C ') thereof to the width (A) of the upper end portion of the concave portion due to the intaglio streak shape. If the width is larger than 1/2 of ()), ink transfer will be hindered, and a latent image pattern with excellent gradation will not easily appear, and the effect of the present invention will not be achieved.
[0033]
The height of the ink of the intaglio printing object of the present invention is not particularly limited as long as there is no problem in printing quality. However, judging from the quality of printed matter, the height of the convex printing object is 5 μm. The thickness is preferably 300 μm or less. When characters, symbols, numbers, patterns and copy-forgery-inhibited patterns are formed by the intaglio printing object of the present invention, it is preferable that the image width in the width direction of the ink transfer portion corresponding to the bottom is from 10 μm to 600 μm. When the image width in the width direction of the ink transfer portion corresponding to the bottom is 10 μm or less, or 600 μm or more, and when the image height is 5 μm or less, or 300 μm or more, it can be said that the intaglio printing plate of the present invention is difficult to produce. .
[0034]
In the intaglio printing plate of the present invention, in the intaglio printing plate or the like produced by a so-called corrosion method generally performed in the printing field, it is possible to periodically change the cross-sectional shape of a part of a continuous convex image. It is difficult because it cannot be done. Also, in the method of producing an object using an NC engraving machine (a numerically controlled engraving machine or a numerically controlled machine tool), since the engraving tool directly contacts the plate surface material to form a groove having the shape of an intaglio image, the cross-sectional shape is reduced. Greatly depends on the shape of the cutting tool. Therefore, every time the cross-sectional shape of the object is changed, the shape of the cutting tool must be replaced with a different one each time and processed, resulting in reduced workability and increased cost for manufacturing the cutting tool itself. I will. Therefore, it is preferable to manufacture the intaglio printing plate using a non-contact laser processing machine having a high degree of freedom in processing.
[0035]
Since the printed matter of the present invention has a special shape in which each one of the object shapes is three-dimensionally complicated, even if a counterfeiter intends to copy, the object has the above-described object shape. Even if an attempt is made to produce a printed material, it cannot be easily produced, so that it can be used as a valuable printed material having a forgery prevention effect. In addition, since the image is not copied by the copying machine, the effect of preventing copying is excellent. Furthermore, not only the excellent finger sensitivity and the true / false discrimination effect due to the inking of the intaglio printing object, but also the periodic change of the cross-sectional shape of the convex image forming the image, the surface state of the convex image and The application of the fact that the reflection state of light hitting this convex object differs depending on the optical properties of the material for producing the convex object, and in the cross-sectional shape of the continuous convex object, This is an image produced on a substrate (medium) by vibrating the upper end in the width direction of the bottom of the image, which is the ink transfer portion, and periodically deforming the cross-sectional shape thereof. By changing the width, amplitude, and period of the upper end of the line, the part that reflects more light hits appears brighter on the side part that connects the upper end and the bottom of the image, and the part that reflects less light hits Because the pattern of light and dark that appears dark changes, Printed material having a gradation obtained by streaking, the printed matter excellent in authenticity discrimination effect can be obtained.
[0036]
The substrate used for the intaglio printing of the present invention is not particularly limited, such as paper and plastic.
[0037]
The intaglio printing plate surface of the present invention can also be used as an embossing printing plate surface.
[0038]
The intaglio ink used for the intaglio printing of the present invention is not particularly limited, but is preferably an ink of an electron beam curable type, an ultraviolet curable type, an oxidative polymerization type, or a combination type of an ultraviolet curable type and an oxidative polymerization type.
[0039]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples, but the contents of the present invention are not limited to the scope of these Examples.
[0040]
(Example 1)
[0041]
Using a three-dimensional object data (G) shown in FIG. 11 prepared on a computer, the depth (J ′) that can be engraved by one engraving with respect to the depth (E ′) of the concave portion engraved by laser engraving. ) Is set, a layer (H) having a cross-sectional shape in the depth direction of the concave portion is extracted as a processing region for each (J), and a laser beam is moved in a scanning line shape for each layer of the extracted processing region. Engraving was performed to produce an intaglio master. The engraving direction and the number of engravings of the present invention are not particularly limited.
[0042]
An intaglio printing plate surface was prepared using the obtained master plate, and was printed on a substrate with an intaglio printing machine using ordinary intaglio printing ink. FIG. 12 shows the obtained printed matter. FIG. 12 is a diagram when the obtained printed matter is observed from the vertical direction.
[0043]
When observing the printed matter of FIG. 12 at an angle, as shown in FIG. 13, there is a change in a light-dark pattern in which a portion that reflects a large amount of light hitting the image surface appears bright, and a portion that reflects a small amount of hit light appears dark. As a result, a continuous difference occurs in the reflection state of light entering the observer's eyes, so that the image itself is observed as having a gradation.
[0044]
Even when the printed matter of the first embodiment is copied with a copying machine (CLC900, manufactured by Canon Inc.) and the copied copy is observed at an angle, the image itself is observed to have a gradation. Did not.
[0045]
【The invention's effect】
The present invention requires an intaglio printing plate having a three-dimensionally complicated specially shaped concave portion in order to create an intaglio printing object having a specially shaped three-dimensionally complicated shape, which is easily engraved by laser engraving. The intaglio printing plate surface has a plurality of recesses, and among the plurality of recesses, at least one or more recesses, along with the depth direction of the recesses, the width of the recesses is reduced, the length direction is A printed matter printed on an intaglio printing plate having a specially shaped concave portion configured to change in a wavy manner becomes an intaglio printing product having an effect of preventing duplication.
[0046]
Since the printed matter of the present invention has a special shape in which each one of the object shapes is three-dimensionally complicated, the forged person has the object shape of the present invention even if a forger wants to copy. Even if an attempt is made to produce a printed material, it cannot be easily produced, so that it can be used as a valuable printed material having a forgery prevention effect. In addition, since the image is not copied by the copying machine, the effect of preventing copying is excellent. Furthermore, not only the excellent finger sensitivity and the true / false discrimination effect due to the inking of the intaglio printing object, but also the periodic change of the cross-sectional shape of the convex image forming the image, the surface state of the convex image and The application of the fact that the reflection state of the light hitting the convex object differs depending on the optical properties of the material for producing the convex object, and in the cross-sectional shape of the continuous convex object, This is an image produced on a base material (medium) by vibrating the upper end in the width direction of the bottom of the image, which is the ink transfer portion, and periodically deforming the cross-sectional shape thereof. By changing the width, amplitude, and period of the upper end of the line, the part that reflects more light hits appears brighter on the side part that connects the upper end and the bottom of the image, and the part that reflects less light hits Because the pattern of light and dark that appears dark changes, Printed material having a gradation obtained by streaking, the printed matter excellent in authenticity discrimination effect can be obtained.
[0047]
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing the shape of a conventional intaglio image.
FIG. 2 is a sectional view showing an intaglio printing plate surface for printing the intaglio printing object shown in FIG. 1;
FIG. 3 is a diagram showing dimensional elements when an upper end portion of an image does not have a specific width in the image shape of the present invention.
FIG. 4 shows an intaglio printing surface of the intaglio image shown in FIG. 3;
FIG. 5 shows another example of the intaglio printing object of the present invention.
FIG. 6 shows another example of the intaglio printing object of the present invention.
FIG. 7 shows an intaglio printing surface of the intaglio printing object shown in FIG. 5;
FIG. 8 shows an intaglio printing surface of the intaglio image shown in FIG. 6;
FIG. 9 shows a limitation of a wavy change at an upper end portion of an image.
FIG. 10 shows the limitation of wavy changes at the bottom of the plate.
FIG. 11 is a diagram showing image data for laser engraving created on a computer and an engraving method.
FIG. 12 is a view of a printed matter on which an image of the present invention is printed is observed from directly above.
FIG. 13 is a diagram obliquely observing a printed matter on which an image of the present invention is printed.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1
Claims (7)
前記凹版版面は、複数本の凹部を有し、前記複数本の凹部のうち、少なくとも一本以上の凹部は、前記凹部の深さ方向に伴い、凹部の幅が狭くなり、長さ方向は波状に変化するように構成されたことを特徴とする凹版版面。On the intaglio printing plate,
The intaglio printing plate surface has a plurality of recesses, and among the plurality of recesses, at least one or more of the recesses is reduced in width in the depth direction of the recess, and the length direction is wavy. An intaglio printing plate, characterized in that it is configured to change into an intaglio printing.
前記凹版版面を、レーザ彫刻機によって、複数本の凹部で形成し、前記複数本の凹部の内、少なくとも一本以上の凹部は、前記凹部の深さ方向に伴い、凹部の幅が狭くなり、長さ方向は波状に変化するように形成させることを特徴とする凹版版面の作製方法。In the method for producing an intaglio printing plate,
The intaglio plate surface is formed with a plurality of recesses by a laser engraving machine, and among the plurality of recesses, at least one or more recesses, along with the depth direction of the recesses, the width of the recesses is reduced, A method of manufacturing an intaglio printing plate, characterized in that the lengthwise direction is changed so as to change in a wavy manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002227351A JP3695534B2 (en) | 2002-08-05 | 2002-08-05 | Intaglio plate surface and intaglio print |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002227351A JP3695534B2 (en) | 2002-08-05 | 2002-08-05 | Intaglio plate surface and intaglio print |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004066579A true JP2004066579A (en) | 2004-03-04 |
| JP3695534B2 JP3695534B2 (en) | 2005-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| JP2002227351A Expired - Fee Related JP3695534B2 (en) | 2002-08-05 | 2002-08-05 | Intaglio plate surface and intaglio print |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011521805A (en) * | 2008-05-16 | 2011-07-28 | カーベーアー−ジオリ ソシエテ アノニム | Intaglio printing plate manufacturing method and system for producing securities |
| KR101227668B1 (en) * | 2009-10-28 | 2013-01-29 | 타이-청 리 | A transfer roller having a high ink content and high replication ratio |
| KR20230076648A (en) * | 2021-11-24 | 2023-05-31 | 한국조폐공사 | Intaglio for security elements and security printed matter printed using the same |
-
2002
- 2002-08-05 JP JP2002227351A patent/JP3695534B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011521805A (en) * | 2008-05-16 | 2011-07-28 | カーベーアー−ジオリ ソシエテ アノニム | Intaglio printing plate manufacturing method and system for producing securities |
| US9796202B2 (en) | 2008-05-16 | 2017-10-24 | Kba-Notasys Sa | Method and system for manufacturing intaglio printing plates for the production of security papers |
| KR101227668B1 (en) * | 2009-10-28 | 2013-01-29 | 타이-청 리 | A transfer roller having a high ink content and high replication ratio |
| KR20230076648A (en) * | 2021-11-24 | 2023-05-31 | 한국조폐공사 | Intaglio for security elements and security printed matter printed using the same |
| KR102594910B1 (en) * | 2021-11-24 | 2023-10-27 | 한국조폐공사 | Intaglio for security elements and security printed matter printed using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3695534B2 (en) | 2005-09-14 |
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