JP2010113120A - Image formation body - Google Patents
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Abstract
【課題】物品の偽造防止及び真贋判定が容易に行える可とう性を有する偽造防止用媒体及びその検証方法を提供することを目的とする。
【解決手段】少なくとも２つの潜像画像部と１つの検出部を有する画像形成体であって、該潜像画像部と検出部を重ねた際に潜像画像部の潜像画像が視認可能となり、一の潜像画像部に検出部を重ねた際に認識できる潜像画像に対し、他の一の潜像画像部に検出部を重ねた際に認識できる潜像画像が反転して視認されることを特徴とする画像形成体とする。
【選択図】図１An object of the present invention is to provide a forgery-preventing medium having flexibility that can easily prevent forgery and determine authenticity of an article, and a method for verifying the medium.
An image forming body having at least two latent image portions and one detection portion, and the latent image of the latent image portion can be visually recognized when the latent image portion and the detection portion are overlapped. The latent image that can be recognized when the detection unit is superimposed on the other latent image portion is reversed and visually recognized with respect to the latent image that can be recognized when the detection unit is superimposed on the one latent image portion. The image forming body is characterized by that.
[Selection] Figure 1
Description
本発明は、物品の偽造防止及び真贋判定を行うための隠し文字や隠しパターンを、フィルタを用いることによって表示させることを目的とした潜像を用いた偽造防止用媒体に関するものある。 The present invention relates to an anti-counterfeit medium using a latent image for the purpose of displaying hidden characters and hidden patterns for performing anti-counterfeiting and authenticity determination of articles by using a filter.
従来、銀行券、商品券、パスポートなどの有価証券や認証媒体は、偽造防止対策として偽造の困難な媒体の貼付を行ってきた。そこでは、目視による判定（オバート機能）または検証器を用いた判定（コバート機能）により真贋判定を行っている。 Conventionally, securities such as banknotes, gift certificates, passports, and authentication media have been pasted with a medium that is difficult to forge as a countermeasure against forgery. In this case, the authenticity determination is performed by visual determination (overt function) or determination using a verifier (covert function).
しかし、目視により真贋判定が行える偽造防止用媒体は偽造されやすい。そこで、近年、偏光技術を用いた潜像技術が提案され、偏光フィルムを重ねることにより潜像を出現させ真贋判定を行っている。 However, a medium for preventing forgery that can be visually checked for authenticity is easily forged. Therefore, in recent years, a latent image technique using a polarization technique has been proposed, and a latent image appears by overlapping a polarizing film to determine authenticity.
しかし、潜像デバイスの真贋判定には、偏光フィルム等の専用の検証器が必要になる。通常、小売業者もしくはサービス業者は消費者から受け取る金券やチケットを想定して、真贋判定用の検証器を準備し真贋判定を行うことは出来る。しかし、一般消費者はこれらの状況を想定して事前に検証器を入手しているとは考えにくく、真贋判定を行うことが出来ない。 However, in order to determine the authenticity of the latent image device, a dedicated verifier such as a polarizing film is required. Usually, a retailer or a service provider can prepare a verifier for authenticity determination and perform authenticity determination assuming a voucher or ticket received from a consumer. However, it is unlikely that a general consumer has obtained a verifier in advance assuming these situations, and authentication cannot be made.
そこで、この問題を解決するために、検証器と潜像デバイスが一体となった媒体の提案である（例えば、特許文献１参照。）。 In order to solve this problem, there is a proposal of a medium in which a verifier and a latent image device are integrated (see, for example, Patent Document 1).
しかしながら、この提案のように、検証器を９０°旋回させるとポジの画像がネガで表されるとあるが、検証器と潜像デバイスが一体となった媒体では検証器を９０°旋回させにくく画像が反転するのを確認しづらい。 However, as shown in this proposal, when the verifier is turned 90 °, a positive image is expressed as a negative. However, it is difficult to turn the verifier 90 ° with a medium in which the verifier and the latent image device are integrated. It is difficult to confirm that the image is reversed.
以下に先行技術文献を示す。
本発明は、このような従来技術の問題点を解決しようとするものであり、物品の偽造防止及び真贋判定が容易に行える可とう性を有する偽造防止用媒体及びその検証方法を提供することを目的とする。 The present invention is intended to solve such problems of the prior art, and provides a forgery prevention medium having a flexibility that can easily prevent forgery of articles and determine authenticity, and a method for verifying the same. Objective.
本発明は、可撓性支持体の一方の面上に、少なくとも２つの潜像画像部と１つの検出部を有する画像形成体であって、該潜像画像部と検出部を重ねた際に潜像画像部の潜像画像が視認可能となり、一の潜像画像部に検出部を重ねた際に認識できる潜像画像に対し、他の一の潜像画像部に検出部を重ねた際に認識できる潜像画像が反転して視認されることを特徴とする画像形成体である。 The present invention provides an image forming body having at least two latent image portions and one detection portion on one surface of a flexible support, and the latent image portion and the detection portion are overlapped with each other. When the latent image in the latent image portion is visible and can be recognized when the detection portion is superimposed on one latent image portion, the detection portion is superimposed on the other latent image portion. The image forming body is characterized in that a latent image that can be recognized by the camera is reversed and viewed.
また、前記少なくとも２つの潜像画像部が連続して形成されてなることを特徴とする請求項１記載の画像形成体とする。
2. The image forming body according to
また、前記潜像画像部が複数の光軸をもつ複屈折材料からなり、前記検証部が偏光子からなることを特徴とする。 The latent image portion is made of a birefringent material having a plurality of optical axes, and the verification portion is made of a polarizer.
また、前記可撓性透明基材と潜像画像部の間に反射層を有することを特徴とする。 In addition, a reflective layer is provided between the flexible transparent substrate and the latent image portion.
また、前記潜像画像部と反射層の間にＯＶＤ層を有することを特徴とする。 Further, an OVD layer is provided between the latent image portion and the reflective layer.
また、前記可撓性透明基材の他方の面上に隠蔽層が形成されており、かつ検出部の下部に開口部を有することを特徴とする。 In addition, a concealing layer is formed on the other surface of the flexible transparent substrate, and an opening is provided below the detection unit.
また、前記可撓性透明基材がプラスチックフィルム基材からなることを特徴とする。 The flexible transparent substrate may be a plastic film substrate.
本発明によれば、画像形成体に潜像画像と検証部を有するため、画像形成体のみで真偽の判定をすることができ、かつ一つの検証部で複数の潜像を確認することができるため高度な偽造防止判定をすることが可能となった。 According to the present invention, since the image forming body includes the latent image and the verification unit, it is possible to make a true / false determination only with the image forming body, and it is possible to confirm a plurality of latent images with one verification unit. This makes it possible to make advanced anti-counterfeit judgments.
本発明の画像形成体は、可撓性基材上に少なくとも２つの潜像画像部と１つの検証部を有する。
検証部を潜像画像部に重ねることで、潜像画像を確認することができる。
また、検証部を一の潜像画像部と重ねた場合に確認できる画像と、検証部を他の一の潜像画像部と重ねた場合に確認できる潜像画像は、いわゆるポジとネガの関係の画像として認識できる。
The image forming body of the present invention has at least two latent image portions and one verification portion on a flexible substrate.
By superimposing the verification part on the latent image part, the latent image can be confirmed.
The image that can be confirmed when the verification unit is overlapped with one latent image portion and the latent image that can be confirmed when the verification unit is overlapped with another latent image portion are the so-called positive and negative relationship. It can be recognized as an image.
図１、２は潜像画像部を２つにした場合の例を示す概略図である。
潜像画像部は、図１に示すようにそれぞれわけて形成してもよいし、図２に示すように潜像画像を連続して設け、部分的に潜像画像部として用いても良い。ここで図２では潜像をストライプ状に形成し、点線で囲った３、４を潜像画像部として用いた例である。
連続して潜像画像を設け、部分的に潜像画像部として用いる場合は、一度に潜像画像部を形成できるため、生産効率の点で有利である。
1 and 2 are schematic views showing an example in which there are two latent image portions.
The latent image portion may be formed separately as shown in FIG. 1, or the latent image may be provided continuously as shown in FIG. 2 and partially used as the latent image portion. Here, FIG. 2 shows an example in which a latent image is formed in a stripe shape and 3 and 4 surrounded by a dotted line are used as a latent image portion.
When the latent image is continuously provided and partially used as the latent image portion, the latent image portion can be formed at a time, which is advantageous in terms of production efficiency.
本発明に用いる可撓性支持体は、可撓性を有するものであれば特に限定をするものではなく紙基材やプラスチックフィルム基材などを用いることができる。
また、透明性があり、屈折率の異方性がないものが好ましい。
さらに、検証部と２つの潜像画像部とを重ね合わせて潜像を確認ため、支持体の複数の箇所を何度も折りたたむ必要があるので折り曲げ耐性がある材料を用いることが好ましく、プラスチックフィルム基材を好適に用いることができる。
The flexible support used in the present invention is not particularly limited as long as it has flexibility, and a paper substrate or a plastic film substrate can be used.
Further, those having transparency and having no refractive index anisotropy are preferred.
Furthermore, it is necessary to fold a plurality of portions of the support many times in order to confirm the latent image by superimposing the verification portion and the two latent image portions, so it is preferable to use a material that is resistant to bending. A substrate can be suitably used.
例えば押出加工やキャスト加工により作製された無延伸フィルム及び、延伸加工により作製された延伸フィルムを用いることができる。延伸フィルムとしては１軸延伸、２軸延伸フィルムを用いることができる。
このようなプラスチックフィルムとして、セロハン、ポリカーボネート（ＰＣ）、ポリエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、ポリオレフィン（ＰＯ）、エチレンビニルアルコール（ＥＶＯＨ）、ポリビニルアルコール（ＰＶＡ）、ポリ塩化ビニル、ポリエチレンナフタレート（ＰＥＮ）、ポリエチレンテレフタレート（ＰＥＴ）、ナイロン、アクリル樹脂、トリアセチルセルロース（ＴＡＣ）フィルムなど
が挙げられる。
For example, an unstretched film produced by extrusion or casting and a stretched film produced by stretching can be used. As the stretched film, a uniaxially stretched or biaxially stretched film can be used.
As such plastic film, cellophane, polycarbonate (PC), polyethylene (PE), polypropylene (PP), polyolefin (PO), ethylene vinyl alcohol (EVOH), polyvinyl alcohol (PVA), polyvinyl chloride, polyethylene naphthalate ( PEN), polyethylene terephthalate (PET), nylon, acrylic resin, triacetyl cellulose (TAC) film, and the like.
潜像画像部は例えば複数の光軸をもつ複屈折材料を用いることができる。
このような材料を用いた場合、例えば図３に示すように光軸の方向の異なる部分を形成することで潜像画像を形成できる。
For example, a birefringent material having a plurality of optical axes can be used for the latent image portion.
When such a material is used, a latent image can be formed by forming portions having different optical axis directions as shown in FIG. 3, for example.
具体的には配向膜層及びλ／４位相差層より形成されているものを用いることができる。
配向膜層の材料としては、例えばポリビニルアルコール（ＰＶＡ）やポリイミドなどの樹脂を使用できる。
Specifically, those formed of an alignment film layer and a λ / 4 retardation layer can be used.
As a material for the alignment layer, for example, a resin such as polyvinyl alcohol (PVA) or polyimide can be used.
配向膜層の形成法としては、これらの樹脂を適宜溶解した樹脂溶液を、ワイヤーバー、グラビア、マイクログラビアなどの塗工方式を用いて塗布、乾燥し、乾燥後ラビング布にて配向膜面を擦るラビング処理を行うことで得ることができる。
ラビング布としては、コットンやベルベットなどの材料を用いることができる。
また配向膜層は光配向剤を用いて形成しても良い。光配向剤は、例えば３６５ｎｍの偏光光を照射すると、偏光方向に液晶配向力をもつ材料等がある。この光配向膜に対して偏光紫外線を用いて全面に照射を行い、全面照射した偏光方向に対して一定の角度差をつけた方向にパターン照射を行うこと形成できる。
As a method for forming the alignment film layer, a resin solution in which these resins are appropriately dissolved is applied and dried using a coating method such as wire bar, gravure, or microgravure, and after drying, the alignment film surface is coated with a rubbing cloth. It can be obtained by rubbing rubbing treatment.
As the rubbing cloth, materials such as cotton and velvet can be used.
The alignment film layer may be formed using a photoalignment agent. Examples of the photoalignment agent include a material having a liquid crystal alignment force in the polarization direction when irradiated with 365 nm polarized light. The photo-alignment film can be formed by irradiating the entire surface with polarized ultraviolet rays and irradiating the pattern in a direction having a certain angle difference with respect to the polarization direction irradiated on the entire surface.
λ／４位相差層は、ネマチックまたはスメクチック液晶材料等のサーモトロピック液晶材料を用いることができる。
λ／４位相差層の形成はグラビア印刷などの塗工方法を用いて行うことができる。
For the λ / 4 retardation layer, a thermotropic liquid crystal material such as a nematic or smectic liquid crystal material can be used.
The formation of the λ / 4 retardation layer can be performed using a coating method such as gravure printing.
本発明の検証部は潜像画像部と重ねて見ることで潜像を確認するためのものである。
複数の光軸をもつ複屈折材料を用いた潜像画像部を用いる場合、検証部として直線偏光子などの偏光子を用いることができる。
偏光子としては、ポリビニルアルコール（ＰＶＡ）にヨウ素または２色性染料を含浸させ、延伸配向させた吸収型偏光子や、２色性染料を配向膜上で配向させた吸収型偏光子や、コレステリック液晶にλ／４位相差子を組み合わせた反射型偏光子、複屈折性多層フィルムを積層した反射型偏光子、ブルースター角でレンチキュラーレンズ状に形成したプリズム偏光子、複屈折物質を回折格子状に形成した複屈折回折偏光子、回折構造の溝を深く形成した回折偏光子などを利用することができる。また、その他反射光または透過光にて特定偏光成分を分離もしくは抽出できる素子を用いることができる。
The verification unit of the present invention is for confirming the latent image by overlapping the latent image portion.
When a latent image portion using a birefringent material having a plurality of optical axes is used, a polarizer such as a linear polarizer can be used as the verification portion.
Examples of the polarizer include an absorption polarizer obtained by impregnating iodine or dichroic dye with polyvinyl alcohol (PVA) and stretching and orientation, an absorption polarizer obtained by orienting the dichroic dye on the orientation film, and cholesteric Reflective polarizer combining λ / 4 phase retarder with liquid crystal, reflective polarizer laminating birefringent multilayer film, prism polarizer formed in lenticular lens shape with Brewster angle, birefringent material as diffraction grating A birefringent diffractive polarizer formed in the above, a diffractive polarizer in which a groove of a diffractive structure is deeply formed, or the like can be used. In addition, an element capable of separating or extracting a specific polarization component by reflected light or transmitted light can be used.
本発明では、潜像画像を反射で確認してもよいし、透過で確認してもよい。
反射で確認する場合、後述する反射層を有することが好ましい。
また透過で確認する場合、後述するように潜像画像部の裏面に偏光子を形成するか、潜像画像部の裏面は光が透過するような構成にして裏面方向に偏光子を配置することが好ましい。
In the present invention, the latent image may be confirmed by reflection or by transmission.
When confirming by reflection, it is preferable to have a reflection layer described later.
When confirming by transmission, a polarizer is formed on the back surface of the latent image portion as described later, or the back surface of the latent image portion is configured to transmit light and the polarizer is arranged in the back surface direction. Is preferred.
複数の光軸をもつ複屈折材料からなる潜像画像部と、偏光子からなる検証部を用いる場合、２つ以上の潜像画像部の潜像の画像パターンは同じものを用いることができる。
検証部を折りたたんでそれぞれの潜像画像部と重ねる際、偏光子の光軸とそれぞれの潜像画像部の光軸が直交するような角度で配向することで、それぞれの潜像画像がポジとネガに反転した画像として確認できる。
When a latent image portion made of a birefringent material having a plurality of optical axes and a verification portion made of a polarizer are used, the image patterns of the latent images of two or more latent image portions can be the same.
When the verification unit is folded and overlapped with each latent image portion, the orientation of the optical axis of the polarizer and the optical axis of each latent image portion is oriented so that each latent image is positive. This can be confirmed as a negative image.
潜像画像部の下部に反射層を形成しても良い。
反射層の材料としては光反射性が得られれば特に限定されるものではないが、例えば金属蒸着膜などの鏡面反射層を用いることができる。
このような材料として例えばアルミニウム、金、銀、銅などの金属または合金を用いることができる。またこれらの材料は単独で用いても良いし複数積層して用いてもよい。
反射層は、例えば真空蒸着法やスパッタリング法などの気相堆積法を用いて形成することができる。
A reflective layer may be formed below the latent image portion.
The material of the reflective layer is not particularly limited as long as light reflectivity is obtained. For example, a specular reflective layer such as a metal vapor deposition film can be used.
As such a material, for example, a metal or an alloy such as aluminum, gold, silver, or copper can be used. Moreover, these materials may be used independently and may be laminated | stacked and used.
The reflective layer can be formed using, for example, a vapor deposition method such as a vacuum evaporation method or a sputtering method.
また、反射層は反射性顔料を含んだ光反射性材料を用いても良い。
光反射性顔料の材料としては、例えば光反射性顔料を樹脂などに分散させたものを用いることができる。また、反射光に干渉色を与えるものであっても良い。
このようなものとして、例えば見る角度に応じて色が変化する材料を微粉砕したものを用いることができる。この材料はそれぞれ屈折率が異なりかつ適当な膜厚を有するセラミックからなる複数層を積層させて形成することができる。また、その他パール顔料など光輝性顔料を用いても良い。
The reflective layer may be made of a light reflective material containing a reflective pigment.
As a material for the light reflective pigment, for example, a material obtained by dispersing a light reflective pigment in a resin or the like can be used. Further, an interference color may be given to the reflected light.
As such, for example, a material obtained by finely pulverizing a material whose color changes according to the viewing angle can be used. This material can be formed by laminating a plurality of layers made of ceramics having different refractive indexes and appropriate film thicknesses. Further, other bright pigments such as pearl pigments may be used.
また、本発明では、反射層上にＯＶＤ層を設けることができる。
ＯＶＤ層としてはホログラム、回折格子などの光学層があげられる。ホログラムとしては、光の干渉を微細な凹凸パターンとして平面に記録するレリーフ型、体積方向に干渉縞を記録する体積型などがあり、中でも量産性やコストの点からレリーフホログラムを好適に用いることができる。
In the present invention, an OVD layer can be provided on the reflective layer.
Examples of the OVD layer include optical layers such as holograms and diffraction gratings. Holograms include a relief type that records light interference on a flat surface as a fine concavo-convex pattern, a volume type that records interference fringes in the volume direction, etc. Among them, a relief hologram is preferably used in terms of mass productivity and cost. it can.
ＯＶＤ層は立体画像、見る角度により色が変化するカラーシフトを生じる像、キラキラと輝く独特な光輝感を有する像などを表示させることができる。また、星などの図形や、肉眼では判別不可能な微細なマイクロ文字等の文字・図形を表示させることができる。また、多色の画像を表示させることや観察角度等に応じて異なる画像を表示させることも可能である。 The OVD layer can display a three-dimensional image, an image that causes a color shift in which the color changes depending on the viewing angle, an image that has a unique glittering shine, and the like. Further, it is possible to display a figure such as a star or a character / figure such as a fine micro character that cannot be distinguished with the naked eye. It is also possible to display a multicolor image or to display a different image depending on the observation angle or the like.
本発明では可撓性支持体上に絵柄層を設けることができる。
絵柄層を設ける場合、潜像画像部と検証部には重ならない位置に設ける。
絵柄層としては、特に限定するものではなく、公知のインキを用いてオフセット印刷法、シルクスクリーン印刷法、グラビア印刷法、フレキソ印刷法、凸版印刷法、凹版印刷法などの一般的な印刷法を用いて形成することができる。
In the present invention, a pattern layer can be provided on a flexible support.
When the pattern layer is provided, it is provided at a position that does not overlap the latent image portion and the verification portion.
The pattern layer is not particularly limited, and a general printing method such as an offset printing method, a silk screen printing method, a gravure printing method, a flexographic printing method, a relief printing method, an intaglio printing method using a known ink is used. Can be formed.
また、本発明では可撓性支持体の裏面に隠蔽層を設けることができる。
隠蔽層としては、前述の支持体を隠蔽でき、また絵柄を設けた場合は裏面に絵柄が裏写りしにくい程度の隠蔽性を有するものであれば良い。
例えば白色または銀色のインキを用いて、オフセット印刷法、シルクスクリーン印刷法、グラビア印刷法、フレキソ印刷法、凸版印刷法、凹版印刷法などの一般的な印刷法を用いて形成することができる。
In the present invention, a concealing layer can be provided on the back surface of the flexible support.
Any concealing layer may be used as long as it can conceal the above-mentioned support and has a concealing property to the extent that the pattern is difficult to show through on the back side.
For example, it can be formed using a general printing method such as an offset printing method, a silk screen printing method, a gravure printing method, a flexographic printing method, a relief printing method, an intaglio printing method using a white or silver ink.
また、本発明では支持体を折り曲げ検証部と潜像画像部を重ねて支持体の裏面側から潜像を確認するため、検証部の下部に対応する部分には隠蔽層を形成しない開口部を設けることが必要である。
さらに、透過で潜像を確認する場合、潜像画像部は配向層およびλ／２位相差層より形成し、この下部に対応する部分には隠蔽層を形成しない開口部を設ける方が潜像画像を視認しやすい。潜像画像部の配向方向とその下部に設ける偏光子の配向方向は互いに直交もしくは平行になるよう設ける必要がある。
Further, in the present invention, the support is bent and the latent image portion is overlapped with the verification portion, so that the latent image is confirmed from the back side of the support. It is necessary to provide it.
Furthermore, when a latent image is confirmed by transmission, the latent image portion is formed of an alignment layer and a λ / 2 retardation layer, and an opening portion that does not form a concealing layer is provided in a portion corresponding to the lower portion. Easy to see the image. The alignment direction of the latent image portion and the alignment direction of the polarizer provided below the latent image portion need to be orthogonal or parallel to each other.
前述の潜像画像形成部、検証部、絵柄層、反射層、ＯＶＤ層は、可撓性支持体上に順次形成しても良いし、別に転写箔もしくはラミネートにより層を形成したものを支持体に転写形成してもよい。
また、最表面にはオーバーコート層またはオーバーシート層を形成してもよい。
The latent image forming unit, the verification unit, the pattern layer, the reflective layer, and the OVD layer may be sequentially formed on a flexible support, or a support in which a layer is separately formed by transfer foil or laminate. Alternatively, it may be transferred and formed.
An overcoat layer or an oversheet layer may be formed on the outermost surface.
１・・・・画像形成体
２・・・・可撓性基材
３・・・・潜像画像部Ａ
３１・・・検出時の潜像画像Ａ（ポジ画像）
４・・・・潜像画像部Ｂ
４１・・・検出時の潜像画像Ｂ（ネガ画像）
５・・・・検証部
６・・・・絵柄層
７・・・・反射層
８・・・・隠蔽層
DESCRIPTION OF
31 ... Latent image A at detection (positive image)
4 .... Latent image part B
41 ... Latent image B at detection (negative image)
5 ...
Claims (7)
該潜像画像部と検出部を重ねた際に潜像画像部の潜像画像が視認可能となり、
一の潜像画像部に検出部を重ねた際に認識できる潜像画像に対し、他の一の潜像画像部に検出部を重ねた際に認識できる潜像画像が反転して視認されることを特徴とする画像形成体。 An image forming body having at least two latent image portions and one detecting portion on one surface of a flexible support,
When the latent image portion and the detection portion are overlapped, the latent image of the latent image portion becomes visible,
The latent image that can be recognized when the detection unit is superimposed on the other latent image portion is reversed and visually recognized with respect to the latent image that can be recognized when the detection unit is superimposed on the one latent image portion. An image forming body characterized by that.
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| JP2008285211A JP5381023B2 (en) | 2008-11-06 | 2008-11-06 | Image forming body |
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| JP2008285211A JP5381023B2 (en) | 2008-11-06 | 2008-11-06 | Image forming body |
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| JP2011016248A (en) * | 2009-07-07 | 2011-01-27 | National Printing Bureau | Authenticity discrimination molded body and authenticity discrimination molded body pair |
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| JP2013064882A (en) * | 2011-09-16 | 2013-04-11 | Toppan Printing Co Ltd | Information recording medium |
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| GB2552778A (en) * | 2016-07-26 | 2018-02-14 | Nautilus Gb Ltd | Anti-counterfeit image |
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