JP2012144010A - Forgery preventing medium, and printed matter - Google Patents
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Abstract
【課題】より高い偽造防止効果を、機械を使用しない簡易な判定方法により実現できる偽造防止媒体及び印刷物を提供すること。
【解決手段】基材の表裏面の全体又は一部に、少なくとも一つ以上の接着層、パターン化された反射層、回折格子層からなる偽造防止層を、表裏合成パターンが出現する様に定められた位置に設け、前記偽造防止層を設けた基材を透かすと、前記パターン化された反射層が透過光を遮断し、表裏各々単独では認識できない表裏合成パターンを出現させること。
【選択図】図１An anti-counterfeit medium and a printed matter capable of realizing a higher anti-counterfeit effect by a simple determination method that does not use a machine.
An anti-counterfeit layer comprising at least one adhesive layer, a patterned reflection layer, and a diffraction grating layer is defined on the entire front surface or back surface of a substrate so that a front / back composite pattern appears. When the base material provided with the anti-counterfeiting layer is made transparent, the patterned reflective layer blocks the transmitted light, and the front and back synthetic patterns that cannot be recognized independently are made to appear.
[Selection] Figure 1
Description
本発明は、有価証券類等の偽造防止と真贋判定のために、偽造防止効果を有するＯＶＤが施された偽造防止媒体に関するものである。 The present invention relates to an anti-counterfeit medium provided with an OVD having an anti-counterfeit effect in order to prevent forgery and authenticity determination of securities and the like.
紙幣や商品券などの有価証券類には、しばしば印刷技術や転写技術を用いて偽造防止のための加工が施される。 Securities such as banknotes and gift certificates are often subjected to processing for preventing counterfeiting using printing technology or transfer technology.
印刷技術には、従来からシースルーレジスター（併せ透かし）と呼ばれる印刷技法が存在し、これは紙幣や旅券を初めとする有価証券類の基材の表裏に位置見当を併せた同一画像又は別画像を印刷し、両者を透過光にて観察することで、同一画像であればズレのない精度、別画像であれば両者が重なることで形を成す新たな画像を、視認することで容易に真贋を判定可能な技術である。紙幣の偽造券においてはこのシースルーレジスターの表と裏の見当がずれているものがしばしば見受けられ、現在でも効果的な偽造防止技術である。 In the printing technology, conventionally, there is a printing technique called see-through register (combined watermark), which is the same image or another image with the position registration on the front and back of the base material of securities such as banknotes and passports. By printing and observing both with transmitted light, if the same image, there is no deviation, and if it is a different image, it can be easily verified by visually recognizing a new image that is formed by overlapping the two images. It is a technology that can be determined. In counterfeit bills, there is often a misregistration between the front and back of this see-through register, and this is still an effective anti-counterfeit technology.
また、転写技術には、光の干渉を用いて立体画像や特殊な装飾画像を表現し得る、ホログラムや回折格子、光学特性の異なる薄膜を重ねることにより、見る角度により色の変化を生じる多層薄膜の様なＯＶＤ（Ｏｐｔｉｃａｌ Ｖａｒｉａｂｌｅ Ｄｅｖｉｃｅ）の利用が継続的に増加している。精細な画像表現を簡易に偽造することは依然困難であり、現在でも偽造防止技術の代表となっている。 In addition, the transfer technology can express stereoscopic images and special decorative images using light interference. Multilayer thin film that changes color depending on viewing angle by stacking holograms, diffraction gratings, and thin films with different optical properties. The use of OVD (Optical Variable Device) is continuously increasing. It is still difficult to easily forge a fine image expression, and it is still representative of anti-counterfeiting technology.
しかしながら、印刷物やホログラムに対する偽造手法は多岐に渡っており、オフセット印刷による紙幣券面の偽造や、ホログラムの反射層を部分的に除去するディメタライズ加工されたホログラムの偽造も試みられている。そうした偽造に対する対策として基材の両面に転写したホログラムに付与された情報を機械読み取りすることで真贋の判定を行ことが提案されている（特許文献１）。 However, there are a wide variety of forgery techniques for printed matter and holograms, and attempts have been made to counterfeit banknotes by offset printing and forgery of demetalized holograms that partially remove the hologram reflection layer. As a countermeasure against such counterfeiting, it has been proposed to perform authenticity determination by mechanically reading information imparted to a hologram transferred on both surfaces of a base material (Patent Document 1).
また機械読み取りを行うために、基材とホログラムの間に、磁気層を設けたことを特徴とした検証機能付きカードの提案もある（特許文献２）。 There is also a proposal of a card with a verification function characterized in that a magnetic layer is provided between a base material and a hologram for machine reading (Patent Document 2).
しかしながら、機械読みによる真贋の判定は行なえるが、目視では真正品と偽造品の区別をつけることが容易ではなく、偽造防止技術としては問題である。 However, although authenticity can be determined by machine reading, it is not easy to distinguish between genuine products and counterfeit products by visual inspection, which is a problem as a forgery prevention technique.
本発明は、かかる従来技術における上記偽造の問題を解決するものであり、より高い偽造防止効果を、機械を使用しない簡易な判定方法により実現できる、偽造防止媒体及び印刷物を提供することにある。 The present invention solves the above-mentioned problem of forgery in the prior art, and provides a forgery prevention medium and printed matter that can realize a higher forgery prevention effect by a simple determination method that does not use a machine.
上記の課題を解決するための手段として、請求項１に記載の発明は、基材の表裏面の全
体又は一部に、接着層と、パターン化された反射層と、回折格子層との少なくとも３層からからなる偽造防止層を、表裏合成パターンが出現する様に定められた位置に設け、前記偽造防止層を設けた基材を透かすと、前記パターン化された反射層が透過光を遮断し、表裏各々単独では認識できない表裏合成パターンを出現させることを特徴とする偽造防止媒体である。
As means for solving the above-mentioned problems, the invention according to claim 1 is characterized in that at least one of an adhesive layer, a patterned reflective layer, and a diffraction grating layer is formed on the whole or a part of the front and back surfaces of the substrate. When the anti-counterfeit layer consisting of three layers is provided at a position determined so that the front and back composite pattern appears, and the base material provided with the anti-counterfeit layer is seen through, the patterned reflective layer blocks transmitted light. However, the anti-counterfeit medium is characterized in that a front / back composite pattern that cannot be recognized by each of the front and back sides is caused to appear.
また、請求項２に記載の発明は、前記偽造防止層の反射層が部分的に除去し形成されていると共に、回折格子層がホログラムであることを特徴とする請求項１に記載の偽造防止媒体である。 The invention according to claim 2 is characterized in that the anti-counterfeiting layer is formed by partially removing the reflection layer and the diffraction grating layer is a hologram. It is a medium.
また、請求項３に記載の発明は、前記請求項１または２に記載の偽造防止媒体を設けたことを特徴とする印刷物である。 The invention according to claim 3 is a printed matter provided with the forgery prevention medium according to claim 1 or 2.
本発明により、印刷によるシースルーレジスターでは実現不可能な偽造防止媒体を基材に付与することが可能となる。また、位置見当を併せたホログラムの両面転写により、表面又は裏面のみの転写と比較して模造が困難な偽造防止媒体を得ることができる。 According to the present invention, an anti-counterfeit medium that cannot be realized by a see-through register by printing can be applied to a substrate. In addition, a forgery prevention medium that is difficult to imitate as compared with the transfer of only the front surface or the back surface can be obtained by double-sided transfer of the hologram with the position registration.
以下本発明を実施するための形態を、図面を用いて詳細に説明する。図１は本発明の偽造防止媒体１の構成形態を示す断面概念図であり、基材２上の表面及び裏面それぞれに、少なくとも一つ以上の接着層７、反射層６、回折格子層５からなる表面偽造防止媒体層３、裏面偽造防止媒層４が、表裏合成パターンが出現する様に表裏の定められた位置に設けた形態となっている。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the drawings. FIG. 1 is a conceptual cross-sectional view showing a configuration form of an anti-counterfeit medium 1 according to the present invention. At least one adhesive layer 7, a reflective layer 6, and a diffraction grating layer 5 are provided on the front surface and the back surface of the substrate 2. The front surface forgery prevention medium layer 3 and the back surface forgery prevention medium layer 4 are provided at predetermined positions on the front and back sides so that the front and back synthetic patterns appear.
図２は、本発明のパッチ型偽造防止媒体１を表面から見た形態を示す概念図であり、表面に設けられた表面偽造防止媒体像８は見えるが、裏面に設けられた裏面偽造防止媒体像９は基材２に遮られて見ることはできない。 FIG. 2 is a conceptual diagram showing a form of the patch-type anti-counterfeit medium 1 according to the present invention as viewed from the front surface. The image 9 is blocked by the substrate 2 and cannot be seen.
パッチ型偽造防止媒体１は表面偽造防止媒体層３、裏面偽造防止媒体層４をあて布の様に転写箔として設けるものであり、ストライプ型は表面偽造防止媒体層３、裏面偽造防止媒体層４をリボン状、として、紙の様な基材に抄き込んだり、リボン状に転写して作製しても良い。 The patch type anti-counterfeit medium 1 is provided with a front anti-counterfeit medium layer 3 and a back anti-counterfeit medium layer 4 as a transfer foil like a cloth. As a ribbon shape, it may be formed on a base material such as paper or transferred to a ribbon shape.
図３は、本発明のパッチ型偽造防止媒体１を裏面から見た形態を示す概念図であり、裏面に設けられた裏面偽造防止媒体像９は見えるが、表面に設けられた表面偽造防止媒体像８は基材２に遮られて見ることはできない。 FIG. 3 is a conceptual diagram showing a form of the patch-type anti-counterfeit medium 1 of the present invention as viewed from the back side, and the back-forgery-prevention medium image 9 provided on the back side is visible, but the surface forgery-prevention medium provided on the front side. The image 8 is blocked by the substrate 2 and cannot be seen.
図４は、本発明のパッチ型偽造防止媒体を透かして見たときの、透かしパターン１０の概念図であり、基材２上の表面及び裏面それぞれに設けられた表面偽造防止媒体層３と裏面偽造防止媒体層４の反射層６のパターンが合成された透かしパターン１０として見える
。
FIG. 4 is a conceptual diagram of the watermark pattern 10 when the patch-type anti-counterfeit medium of the present invention is viewed through, and the front anti-counterfeit medium layer 3 and the rear surface provided on the front surface and the back surface of the substrate 2, respectively. The pattern of the reflection layer 6 of the anti-counterfeit medium layer 4 appears as a combined watermark pattern 10.
図５は、本発明のストライプ型偽造防止媒体１を表面から見た形態を示す概念図であり、表面に設けられた表面偽造防止媒体像８は見えるが、裏面に設けられた裏面偽造防止媒体像９は基材２に遮られて見ることはできない。 FIG. 5 is a conceptual diagram showing a form of the stripe-type anti-counterfeit medium 1 according to the present invention as viewed from the front side, and the back-forgery-preventing medium image 8 provided on the back side, although the front-side anti-counterfeit medium image 8 is visible. The image 9 is blocked by the substrate 2 and cannot be seen.
図６は、本発明のストライプ型偽造防止媒体１を裏面から見た形態を示す概念図であり、裏面に設けられた裏面偽造防止媒体像９は見えるが、表面に設けられた表面偽造防止媒体像８は基材２に遮られて見ることはできない。 FIG. 6 is a conceptual diagram showing a form of the striped anti-counterfeit medium 1 according to the present invention as seen from the back side, and the back-forgery prevention medium image 9 provided on the back side can be seen but the forgery-preventing medium provided on the front side. The image 8 is blocked by the substrate 2 and cannot be seen.
図７は、本発明のストライプ型偽造防止媒体１を透かして見たときの、透かしパターン１０の概念図であり、基材２上の表面及び裏面それぞれに設けられた表面偽造防止媒体層３と裏面偽造防止媒体層４の反射層６のパターンが合成された透かしパターン１０として見える。 FIG. 7 is a conceptual diagram of the watermark pattern 10 when the stripe-type anti-counterfeit medium 1 of the present invention is viewed through, and the surface forgery-preventing medium layer 3 provided on the front surface and the back surface of the substrate 2 respectively. The pattern of the reflective layer 6 of the back surface forgery prevention medium layer 4 appears as a combined watermark pattern 10.
表面偽造防止媒体層３及び裏面偽造防止媒体層４は、ホログラム製造に一般的に用いられる回折格子形成層５、反射層６、接着層７の形成に用いられる樹脂類及び金属類等を用いることができる。 The front surface anti-counterfeit medium layer 3 and the back side anti-counterfeit medium layer 4 use resins and metals used for forming a diffraction grating forming layer 5, a reflective layer 6, and an adhesive layer 7 that are generally used for hologram production. Can do.
回折格子層形成５は熱可塑性樹脂、熱硬化性樹脂、紫外線あるいは電子線硬化性樹脂等が使用できる。例えば、熱可塑性樹脂では、アクリル系樹脂、エポキシ系樹脂、セルロース系樹脂、ビニル系樹脂等が挙げられる。 For the diffraction grating layer formation 5, a thermoplastic resin, a thermosetting resin, an ultraviolet ray, an electron beam curable resin, or the like can be used. For example, acrylic resins include acrylic resins, epoxy resins, cellulose resins, vinyl resins, and the like.
また、反応性水酸基を有するアクリルポリオールやポリエステルポリオール等にポリイソシアネートを架橋剤として添加して架橋させたウレタン樹脂、メラミン系樹脂、フェノール系樹脂等が使用できる。また、紫外線あるいは電子線硬化性樹脂としては、エポキシ（メタ）アクリル、ウレタン（メタ）アクリレート等が使用でき、その厚さとしては０．５〜５．０μｍが好ましい。 In addition, urethane resins, melamine resins, phenol resins, and the like obtained by adding polyisocyanate as a crosslinking agent to an acrylic polyol or polyester polyol having a reactive hydroxyl group and crosslinking can be used. Further, as the ultraviolet ray or electron beam curable resin, epoxy (meth) acryl, urethane (meth) acrylate, or the like can be used, and the thickness is preferably 0.5 to 5.0 μm.
反射層６にはアルミニウム、金、銀、銅、Ｓｎ（スズ）及びこれらの金属を含む合金を使用することができ厚みとしては１００Å〜１０００Åが好ましい。 Aluminum, gold, silver, copper, Sn (tin) and alloys containing these metals can be used for the reflective layer 6 and the thickness is preferably 100 to 1000 mm.
反射層６のパターン化はマスクを用いパターン状に蒸着して形成したり、回折格子層形成５上に蒸着層６を設け、更にその上に透明な樹脂塗液をパターン状にレジストとして設け、乾燥後エッチング液にて、露出した蒸着膜からなる反射層６を除去してパターンを形成することもできる。反射層６としてアルミ蒸着膜を用いる場合には、水酸化ナトリウム水溶液をエッチング液として用いることができる。 The reflective layer 6 is patterned by vapor deposition in a pattern using a mask, or the vapor deposition layer 6 is provided on the diffraction grating layer formation 5, and further a transparent resin coating liquid is provided as a resist on the pattern. It is also possible to form a pattern by removing the reflective layer 6 made of an exposed deposited film with an etching solution after drying. When an aluminum vapor deposition film is used as the reflective layer 6, an aqueous sodium hydroxide solution can be used as an etching solution.
接着層７は、ポリエステル樹脂、アクリル樹脂、塩化ビニル樹脂、ポリアミド樹脂、ポリ酢酸ビニル樹脂、ゴム系樹脂、エチレン−酢酸ビニル共重合樹脂、塩化ビニル酢酸共重合樹脂等の熱可塑性樹脂が使用できる。膜厚は１〜２０μｍが好ましい。
＜実施形態＞
本発明にかかわる偽造防止媒体を製造するために、下記に示す様に、基材の表面及び裏面へ表面偽造防止媒体層３及び裏面偽造防止媒体層４を設けた用紙を用意した。
The adhesive layer 7 can be made of a thermoplastic resin such as polyester resin, acrylic resin, vinyl chloride resin, polyamide resin, polyvinyl acetate resin, rubber resin, ethylene-vinyl acetate copolymer resin, vinyl chloride acetate copolymer resin. The film thickness is preferably 1 to 20 μm.
<Embodiment>
In order to manufacture the anti-counterfeit medium according to the present invention, as shown below, a sheet provided with the front anti-counterfeit medium layer 3 and the back anti-counterfeit medium layer 4 on the front and back surfaces of the substrate was prepared.
回折格子層形成５にはウレタン系樹脂を用い、ＰＥＴ基材上に溶剤にウレタン系樹脂を溶解させて調製した回折格子層形成塗液をコーテイングにより塗工し、乾燥を行って回折格子層形成５を得る。 For the diffraction grating layer formation 5, urethane resin is used, and a diffraction grating layer forming coating solution prepared by dissolving a urethane resin in a solvent on a PET base material is applied by coating and dried to form the diffraction grating layer. Get 5.
次に回折格子パターン記録した金属版を用い、回折格子層形成５に加熱エンボスにより
回折格子パターン転写した。この時表面レリーフ型ホログラムを記録した金属版を用いても良い。
Next, using the metal plate on which the diffraction grating pattern was recorded, the diffraction grating pattern was transferred to the diffraction grating layer formation 5 by heating embossing. At this time, a metal plate on which a surface relief hologram is recorded may be used.
反射層６はアルミを真空蒸着時にマスクを用いパターン真空蒸着により回折格子層形成５上に設けた。また回折格子層形成５の全面にアルミを真空蒸着により設けた後、パターン状に揮発性溶剤に溶解させた樹脂溶液を印刷した後、水酸化ナトリウム水溶液に浸漬して、樹脂溶液を印刷した部分以外を、エッチング除去してパターン形成を行っても良い。 The reflective layer 6 was provided on the diffraction grating layer formation 5 by pattern vacuum deposition using aluminum as a mask during vacuum deposition. Further, after aluminum is provided on the entire surface of the diffraction grating layer formation 5 by vacuum deposition, a resin solution dissolved in a volatile solvent in a pattern is printed, and then immersed in an aqueous sodium hydroxide solution to print the resin solution. Other than that, the pattern may be formed by etching.
エッチング除去によりパターン化した場合は洗浄を行い、乾燥した後に、塩化ビニルと酢酸ビニルの共重合系樹脂からなる接着層７を、反射層６上に設ける。接着層が粘着性のものであれば、剥離紙を用いるが、加熱接着の場合には剥離紙は必要ない。 In the case of patterning by etching removal, after washing and drying, an adhesive layer 7 made of a copolymer resin of vinyl chloride and vinyl acetate is provided on the reflective layer 6. If the adhesive layer is tacky, release paper is used, but in the case of heat bonding, no release paper is required.
基材にはＯＣＲ用紙を用いた。ＯＣＲ用紙上にＮＡＶＩＴＡＳ社製のアップダウン型熱転写装置を用い、印刷された位置合わせ印にて定められた位置に表面偽造防止媒体層３及び裏面偽造防止媒体層４を設けた。この時に回折格子層形成５をコーテイングにより塗布形成するときに用いたＰＥＴ基材は剥離除去しても、そのまま用いても良い。 OCR paper was used as the substrate. A front anti-counterfeit medium layer 3 and a back anti-counterfeit medium layer 4 were provided on the OCR paper at a position defined by a printed alignment mark using an up-down thermal transfer apparatus manufactured by NAVITAS. At this time, the PET base material used when the diffraction grating layer formation 5 is formed by coating may be peeled off or used as it is.
作製した偽造防止媒体を透かして見ると、表面偽造防止媒体層３及び裏面偽造防止媒体層４の反射層６が光を遮断するため、表面と裏面の反射層６が併さって一つの透かしパターン１０を見ることができる。表裏各々単独では認識できない表裏合成パターンとすることにより、さらなる真贋の判定が可能となる。 When the manufactured anti-counterfeit medium is viewed through, the reflection layer 6 of the front anti-counterfeit medium layer 3 and the back anti-counterfeit medium layer 4 blocks light, so that the front and back reflection layers 6 are combined to form one watermark pattern. 10 can be seen. By making the front and back composite patterns that cannot be recognized individually on the front and back sides, further authenticity can be determined.
１・・・偽造防止媒体
２・・・基材
３・・・表面偽造防止媒体層
４・・・裏面偽造防止媒体層
５・・・回折格子形成層
６・・・反射層
７・・・接着層
８・・・表面偽造防止媒体像
９・・・裏面偽造防止媒体像
１０・・・透かしパターン
DESCRIPTION OF SYMBOLS 1 ... Anti-counterfeit medium 2 ... Base material 3 ... Front surface anti-counterfeit medium layer 4 ... Back surface anti-counterfeit medium layer 5 ... Diffraction grating formation layer 6 ... Reflective layer 7 ... Adhesion Layer 8 ... Anti-counterfeit media image 9 ... Back anti-counterfeit media image 10 ... Watermark pattern
Claims (3)
偽造防止媒体。 The anti-counterfeit medium according to claim 1, wherein a reflection layer of the anti-counterfeit layer is partially removed and the diffraction grating layer is a hologram.
Anti-counterfeit medium.
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| Application Number | Priority Date | Filing Date | Title |
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| JP2011005716A JP5712623B2 (en) | 2011-01-14 | 2011-01-14 | Anti-counterfeit media and printed matter |
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| JP2011005716A JP5712623B2 (en) | 2011-01-14 | 2011-01-14 | Anti-counterfeit media and printed matter |
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| JP2012144010A true JP2012144010A (en) | 2012-08-02 |
| JP5712623B2 JP5712623B2 (en) | 2015-05-07 |
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| JP2011005716A Active JP5712623B2 (en) | 2011-01-14 | 2011-01-14 | Anti-counterfeit media and printed matter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018164978A (en) * | 2017-03-28 | 2018-10-25 | 独立行政法人 国立印刷局 | Forgery prevention medium |
| CN109392754A (en) * | 2018-11-30 | 2019-03-01 | 重庆宇道科技发展有限公司 | A kind of method of the dog helmet and trained police dog |
| CN111308586A (en) * | 2020-03-25 | 2020-06-19 | 上海宏盾防伪材料有限公司 | Deep-pattern film and manufacturing method thereof |
| JPWO2022260047A1 (en) * | 2021-06-09 | 2022-12-15 |
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| JPH05139022A (en) * | 1991-11-22 | 1993-06-08 | Ookurashiyou Insatsu Kyokucho | Laminated image front and back pattern synthetic printed material and method for producing the same |
| JP2001315472A (en) * | 2000-05-02 | 2001-11-13 | Dainippon Printing Co Ltd | Information recording medium and card having light diffraction structure, and light diffraction structure |
| JP2010111072A (en) * | 2008-11-07 | 2010-05-20 | National Printing Bureau | Printed matter |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05139022A (en) * | 1991-11-22 | 1993-06-08 | Ookurashiyou Insatsu Kyokucho | Laminated image front and back pattern synthetic printed material and method for producing the same |
| JP2001315472A (en) * | 2000-05-02 | 2001-11-13 | Dainippon Printing Co Ltd | Information recording medium and card having light diffraction structure, and light diffraction structure |
| JP2010111072A (en) * | 2008-11-07 | 2010-05-20 | National Printing Bureau | Printed matter |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018164978A (en) * | 2017-03-28 | 2018-10-25 | 独立行政法人 国立印刷局 | Forgery prevention medium |
| CN109392754A (en) * | 2018-11-30 | 2019-03-01 | 重庆宇道科技发展有限公司 | A kind of method of the dog helmet and trained police dog |
| CN111308586A (en) * | 2020-03-25 | 2020-06-19 | 上海宏盾防伪材料有限公司 | Deep-pattern film and manufacturing method thereof |
| JPWO2022260047A1 (en) * | 2021-06-09 | 2022-12-15 | ||
| WO2022260047A1 (en) * | 2021-06-09 | 2022-12-15 | 凸版印刷株式会社 | 3d display, authenticator, and formation method |
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|---|---|
| JP5712623B2 (en) | 2015-05-07 |
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