JP2000318399A - Forgery preventive sheet - Google Patents
Forgery preventive sheetInfo
- Publication number
- JP2000318399A JP2000318399A JP11126903A JP12690399A JP2000318399A JP 2000318399 A JP2000318399 A JP 2000318399A JP 11126903 A JP11126903 A JP 11126903A JP 12690399 A JP12690399 A JP 12690399A JP 2000318399 A JP2000318399 A JP 2000318399A
- Authority
- JP
- Japan
- Prior art keywords
- white
- liquid crystal
- cholesteric liquid
- colorless transparent
- copy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/378—Special inks
- B42D25/391—Special inks absorbing or reflecting polarised light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/351—Translucent or partly translucent parts, e.g. windows
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/364—Liquid crystals
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、偽造防止を必要と
する種々の商品に使用される用紙に関するものであり、
特に、カラー複写機およびパソコンプリンターなどによ
る複写で偽造を試みたものでも、真偽判定を容易に行う
ことができる偽造防止用紙に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to paper used for various products which require forgery prevention,
In particular, the present invention relates to a forgery prevention sheet that can easily determine the authenticity even if the forgery is attempted by copying using a color copying machine or a personal computer printer.
【０００２】[0002]
【従来の技術】近年、複写機、特に、カラー複写機は機
能的に飛躍的な進歩を遂げており、これらの複写機やカ
ラー複写機を利用して有価証券などの印刷物を複写し、
悪用する事例が多発している。このような事例に対応し
て、複写機の特性を利用した複写防止手段を採用した偽
造防止技術が開発されている。2. Description of the Related Art In recent years, copiers, especially color copiers, have made remarkable progress in function, and use these copiers and color copiers to copy printed matter such as securities.
There are many cases of abuse. In response to such a case, a forgery prevention technology employing copy prevention means utilizing the characteristics of a copying machine has been developed.
【０００３】例えば、 １）その分光反射率曲線においてシャープなピークを有
する色材を用いたインキを使用して印刷を行い、この画
像をカラー複写すると異なる色調を再現するもの、 ２）画像を構成する万線の一部を、複写機のスキャニン
グによる走査方向にかからない方向に設定することによ
り、複写物では、その走査方向と異なる万線の部分のみ
が浮き上がって見える画像を形成するもの、 ３）画像が網点と万線を組み合わせて設けられた場合に
は、複写により網点・万線の差が強調されて再現される
もの、 ４）複写機の分解能以下のマイクロ文字を画像として設
け、複写時にはマイクロ文字が解像されない状態となり
再現を困難としたもの、 ５）印刷による画像の一部を磁性インキを使用して印刷
を行い、この磁性部分の有無を検知することで真偽判定
を行うもの、 ６）印刷物への目視の角度に応じて、観察される色の変
化（カラーシフト）を生じるインキで画像を設けること
により、複写機では再現不可能とするもの、 ７）赤外線領域に吸収の無い墨インキで画像を設け、黒
色部分における赤外線吸収の有無で真偽判定を行うも
の、 ８）特殊インキにより文字、画像、デザインなどを設
け、それらの検出の有無により真偽判別を行うもの、 ９）用紙に透かしを入れたもの、などがあった。For example, 1) printing using an ink using a coloring material having a sharp peak in its spectral reflectance curve, and reproducing this image in color to reproduce a different color tone; 2) forming an image A part of the line is set in a direction that does not overlap with the scanning direction due to the scanning of the copying machine, thereby forming an image in which only a part of the line different from the scanning direction appears to be raised in the copy, 3). When an image is provided by combining a halftone dot and a line, it is reproduced by emphasizing the difference between the halftone dot and the line by copying. 4) A micro character having a resolution lower than the resolution of the copying machine is provided as an image. At the time of copying, micro characters are not resolved and the reproduction becomes difficult. 5) Part of the printed image is printed using magnetic ink, and the presence or absence of this magnetic part is checked. And 6) determining the authenticity by knowing it, 6) providing an image with an ink that causes a change in the observed color (color shift) according to the viewing angle of the printed matter, so that it cannot be reproduced by a copying machine. 7) An image is provided with black ink that has no absorption in the infrared region, and authenticity is determined based on the presence or absence of infrared absorption in the black portion. 8) Characters, images, designs, etc. are provided with special ink and their detection is performed. And 9) a paper with a watermark on it.
【０００４】ところが、複写機やカラー複写機の進歩に
よる解像度及び色再現性などの向上によって、従来は困
難とされてきた上記の偽造防止技術の効果が無くなりつ
つある。また、上記磁性や赤外線などを利用した場合
は、それらの検出装置を用いなければ、真偽を判定する
ことができないという欠点を有している。また、上記用
紙に透かしを入れたものにおいては、例えば、特開平４
−９１２９５公報や特開平６−２８０１９８公報に示さ
れるように、透かし技術を利用した偽造の恐れがある。However, due to improvements in resolution and color reproducibility due to advances in copiers and color copiers, the effects of the above-described forgery prevention technology, which has been conventionally difficult, are disappearing. In addition, when the above-mentioned magnetism, infrared rays and the like are used, there is a disadvantage that the authenticity cannot be determined without using such a detection device. Further, in the above-mentioned paper having a watermark, for example,
As shown in JP-A-912295 and JP-A-6-280198, there is a risk of forgery using a watermark technique.
【０００５】従って、複写機やカラー複写機を利用して
有価証券などの印刷物を複写した複写物の真偽判定を行
う際に、特に、目視での真偽判定を容易に行うことを可
能とするためには、より判断し易い明かな相違点が存在
することが重要であり、そのような判定手段を備えるこ
とが望まれている。[0005] Therefore, when the authenticity of a copy obtained by copying a printed matter such as a security using a copying machine or a color copying machine is determined, it is particularly easy to visually determine the authenticity. In order to do so, it is important that there is a clear difference that is easier to judge, and it is desired to provide such a judgment means.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、上記の事情
を考慮してなされたものであり、カラー複写機やパソコ
ンプリンターなどによる複写で偽造を試みた複写物の真
偽判定を、目視で容易に行うことができる偽造防止用紙
を提供することを課題とするものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and visually checks the authenticity of a copy which has been attempted to be forged by copying using a color copying machine or a personal computer printer. An object of the present invention is to provide a forgery prevention sheet that can be easily performed.
【０００７】[0007]
【課題を解決するための手段】本発明は、基材の白色ま
たは無色透明部上に、白色または無色透明部とは異なる
偏光性を有する、裸眼による目視では透明なコレステリ
ック液晶部を設け、基材の白色部または無色透明部以外
の部分上に、裸眼による目視で可視可能な印刷部を設け
たことを特徴とする偽造防止用紙である。According to the present invention, there is provided a cholesteric liquid crystal portion having a polarization property different from that of a white or colorless transparent portion on a white or colorless transparent portion of a substrate, which is transparent when viewed with the naked eye. The forgery prevention paper is characterized in that a printed portion that is visible with the naked eye is provided on a portion other than the white portion or the colorless transparent portion of the material.
【０００８】[0008]
【発明の実施の形態】以下本発明の実施の形態につき説
明する。図１は本発明による偽造防止用紙の一実施例を
示す平面図である。図１に示すように、偽造防止用紙を
構成する基材（１）は、白色または無色透明部（３）と
白色部または無色透明部以外の部分（５）からなり、白
色または無色透明部（３）上には、白色または無色透明
部とは異なる偏光性を有する、裸眼による目視では透明
なコレステリック液晶部（４）が設けられ、また、白色
部または無色透明部以外の部分（５）上には、裸眼によ
る目視で可視可能な印刷部（２）が設けられている。Embodiments of the present invention will be described below. FIG. 1 is a plan view showing an embodiment of a forgery prevention sheet according to the present invention. As shown in FIG. 1, the base material (1) constituting the anti-counterfeit paper is composed of a white or colorless transparent part (3) and a part (5) other than the white part or colorless transparent part. 3) A cholesteric liquid crystal part (4) having a polarizing property different from that of the white or colorless transparent part and transparent by the naked eye is provided on the upper part, and a part other than the white part or the colorless transparent part (5) is provided on the upper part. Is provided with a printing unit (2) that is visible with the naked eye.
【０００９】基材（１）としては、例えば、紙、プラス
チック、布、木材、ガラス等が使用可能である。印刷部
（２）は、裸眼による目視で絵柄を観察できるように設
けられているもので、一般公知の印刷インキを用いダイ
レクトグラビア印刷法、リバースグラビア印刷法、オフ
セット印刷法、スクリーン印刷法、フレキソ印刷法等の
印刷により設けることができる。As the substrate (1), for example, paper, plastic, cloth, wood, glass and the like can be used. The printing unit (2) is provided so that the picture can be observed visually with the naked eye. The printing unit (2) is a direct gravure printing method, a reverse gravure printing method, an offset printing method, a screen printing method, a flexographic printing method using a generally known printing ink. It can be provided by printing such as a printing method.
【００１０】白色または無色透明部（３）が白色の際
は、自ら白色の材料を用いる方法と、他の色の材料上に
白色のインキを塗布する方法があるが、どちらの方法で
もよい。この材料としては、紙やプラスチックを使用す
るのが好ましいが、用途によっては布、木材、ガラス等
が使用可能である。When the white or colorless transparent portion (3) is white, there are a method of using a white material by itself and a method of applying a white ink on a material of another color. As this material, paper or plastic is preferably used, but cloth, wood, glass, or the like can be used depending on the application.
【００１１】また、白色または無色透明部（３）が無色
透明の際は、無色透明な材料として、ポリプロピレン、
ポリエチレンテレフタレート、ポリ塩化ビニル、塩化ビ
ニル−酢酸ビニル共重合体、塩化ビニル−酢酸ビニル−
ビニルアルコール共重合体、ポリエステル、ポリカーボ
ネート、ポリアクリレート、ポリメタクリレート、ポリ
スチレン等の合成樹脂やガラス等が挙げられ、用途に応
じて使用することができる。When the white or colorless and transparent portion (3) is colorless and transparent, the colorless and transparent material may be polypropylene,
Polyethylene terephthalate, polyvinyl chloride, vinyl chloride-vinyl acetate copolymer, vinyl chloride-vinyl acetate-
Examples include synthetic resins such as vinyl alcohol copolymers, polyesters, polycarbonates, polyacrylates, polymethacrylates, polystyrenes, and the like, and glass, etc., which can be used according to the intended use.
【００１２】コレステリック液晶部（４）は、その周
囲、すなわち、白色または無色透明部（３）とは偏光性
が異なるものである。このコレステリック液晶部（４）
は、裸眼による目視では周囲と同じ、白色もしくは無色
透明であるが、偏光板を用いて目視することにより、こ
のコレステリック液晶部（４）を容易に観察することが
可能となるものである。しかし、複写機を用いた複写物
では、このようなコレステリック液晶部（４）を再現す
ることは不可能であるから、複写物の真偽を容易に判定
することが可能となるものである。The cholesteric liquid crystal part (4) has a different polarization property from its surroundings, that is, from the white or colorless transparent part (3). This cholesteric liquid crystal part (4)
Although the cholesteric liquid crystal part (4) can be easily observed by the naked eye with the same white or colorless and transparent as the surroundings, the cholesteric liquid crystal part (4) can be easily observed by using a polarizing plate. However, since it is impossible to reproduce such a cholesteric liquid crystal part (4) in a copy using a copying machine, the authenticity of the copy can be easily determined.
【００１３】コレステリック液晶は、分子が層状に平行
配列し、その分子軸方向が一層ごとに少しづつ回転した
形で積層されている。このため、このコレステリック液
晶の層を通過する光は、積層された分子の層間隔の約二
倍の波長を有する光を選択的に偏光し、さらに右円偏光
成分を反射し、左円偏光成分及び他の波長の光を透過す
る性質を持っている。具体的には、層間隔が約２３０ｎ
ｍの時、その約二倍の波長の青い光、約２７０ｎｍで緑
の光、約３３０ｎｍで赤の光を選択的に偏光する。Cholesteric liquid crystals are stacked in such a manner that molecules are arranged in parallel in layers and the molecular axis direction is slightly rotated for each layer. For this reason, light passing through this cholesteric liquid crystal layer selectively polarizes light having a wavelength about twice the layer spacing of the stacked molecules, further reflects the right circularly polarized light component, and reflects the left circularly polarized light component. And has the property of transmitting light of other wavelengths. Specifically, the layer interval is about 230 n
At the time of m, blue light having a wavelength about twice as long as that, green light at about 270 nm, and red light at about 330 nm are selectively polarized.
【００１４】そして、コレステリック液晶が設けられ
る、白色または無色透明部（３）が白色の際は、透過し
た光成分も反射されるため裸眼による目視では単なる白
色部としか見えない。しかし、偏光板を用いて目視する
ことにより、このコレステリック液晶の存在、すなわ
ち、コレステリック液晶部（４）を容易に観察すること
が可能となるものである。When the white or colorless transparent portion (3) in which the cholesteric liquid crystal is provided is white, the transmitted light component is also reflected, so that it can be seen as a mere white portion by naked eyes. However, the presence of the cholesteric liquid crystal, that is, the cholesteric liquid crystal part (4) can be easily observed by visual observation using a polarizing plate.
【００１５】また、白色または無色透明部（３）が無色
透明の際は、反射する光成分よりも、その背面から入り
込む光の方が強いと、反射光の色はほとんど感知できず
透明であるように見える。しかし、偏光板を用いて目視
することにより、あるいは、偏光板を用いずとも黒い背
景を置くことにより、このコレステリック液晶の存在、
すなわち、コレステリック液晶部（４）を容易に観察す
ることが可能となるものである。Further, when the white or colorless transparent portion (3) is colorless and transparent, if the light entering from the back is stronger than the reflected light component, the color of the reflected light is hardly perceivable and is transparent. looks like. However, the presence of this cholesteric liquid crystal by visual observation using a polarizing plate, or by placing a black background without using a polarizing plate,
That is, the cholesteric liquid crystal part (4) can be easily observed.
【００１６】コレステリック液晶を設ける方法として
は、白色または無色透明部（３）上にコレステリック液
晶による画像を設けてもよいし、コレステリック液晶の
一部分を加熱などによって分子間隔を変え、これを画像
として用いてもよい。As a method of providing the cholesteric liquid crystal, an image of the cholesteric liquid crystal may be provided on the white or colorless transparent portion (3), or a part of the cholesteric liquid crystal may be changed in molecular interval by heating or the like and used as an image. You may.
【００１７】[0017]
【実施例】以下実施例により本発明を詳細に説明する。 ＜実施例１＞白色の上質紙（９０ｋｇ）を基材として用
い、この上に印刷部をプロセスインキによるオフセット
印刷法により設けた。次に、印刷部とは別の部位にコレ
ステリック液晶によるパターンをスクリーン印刷法で約
５０μｍの厚みで設け、表面を保護するためウレタン系
接着剤を介して５０μｍの透明ポリエチレンテレフタレ
ートフィルムを積層し、１２０℃の熱ローラーで熱接着
した。 ＜実施例２＞基材として易接着処理を施した２５０μｍ
厚の透明ポリエチレンテレフタレート樹脂フィルムを用
いた。そして、構成は実施例１と同様にして偽造防止用
紙を作成した。The present invention will be described in detail with reference to the following examples. <Example 1> White high-quality paper (90 kg) was used as a base material, and a printing portion was provided thereon by an offset printing method using process ink. Next, a pattern made of cholesteric liquid crystal was provided at a thickness of about 50 μm by a screen printing method in a portion different from the printed portion, and a 50 μm transparent polyethylene terephthalate film was laminated via a urethane-based adhesive to protect the surface. Thermal bonding was carried out with a hot roller at ℃. <Example 2> 250 μm subjected to easy adhesion treatment as a substrate
A thick transparent polyethylene terephthalate resin film was used. A forgery prevention sheet was prepared in the same manner as in Example 1.
【００１８】以上のようにして作製した偽造防止用紙を
市販の偏光板を用いて観察したところ、実施例１および
２ともコレステリック液晶によるパターンがパターンと
して観察された。また、実施例２は、背面に黒色の紙を
置いただけでもパターンとして観察された。従って、こ
れら実施例による偽造防止用紙は特殊な検出装置を用い
なくとも真偽判定が可能であることが証明された。When the anti-counterfeit paper prepared as described above was observed using a commercially available polarizing plate, a pattern of cholesteric liquid crystal was observed as a pattern in both Examples 1 and 2. In Example 2, a pattern was observed even when black paper was placed on the back surface. Therefore, it was proved that the anti-counterfeit papers according to these examples can be authenticated without using a special detecting device.
【００１９】次に、両者を市販のカラー複写機のノーマ
ルモードで複写した。複写濃度が低い際には単に白紙が
排出されたが、複写濃度が高い際にはコレステリック液
晶によるパターンが極うすいパターンとして複写され
た。そして、その複写物を偏光板を通して観察したが、
パターンは観察されなかった。すなわち、複写物は、完
全な白紙もしくは極うすいパターンが形成されるだけな
ので、複写物か否かの判断は容易につくことがわかっ
た。以上のことから、複写機による複写物の真偽判定が
容易に行えることが証明された。Next, both were copied in a normal mode of a commercially available color copying machine. When the copy density was low, the blank paper was simply discharged, but when the copy density was high, the pattern of the cholesteric liquid crystal was copied as a very thin pattern. And I observed the copy through a polarizing plate,
No pattern was observed. In other words, it was found that it is easy to determine whether or not a copy is a copy because only a complete blank sheet or a very thin pattern is formed. From the above, it has been proved that the authenticity of a copy can be easily determined by a copying machine.
【００２０】[0020]
【発明の効果】本発明は、基材の白色または無色透明部
上に、白色または無色透明部とは異なる偏光性を有す
る、裸眼による目視では透明なコレステリック液晶部を
設け、基材の白色部または無色透明部以外の部分上に、
裸眼による目視で可視可能な印刷部を設けた偽造防止用
紙であるので、カラー複写機やパソコンプリンターなど
による複写で偽造を試みた複写物の真偽判定を、偏光板
を用いた目視で容易に行うことができる偽造防止用紙と
なる。According to the present invention, there is provided a cholesteric liquid crystal portion having a polarization property different from that of the white or colorless transparent portion on the white or colorless transparent portion of the base material, the cholesteric liquid crystal portion being visible to the naked eye. Or on the part other than the colorless transparent part,
Since it is a forgery-prevention paper with a printed part that can be visually observed with the naked eye, it is easy to visually check the authenticity of a copy that has been forged by copying with a color copier or personal computer printer, etc., visually using a polarizing plate. It is a forgery prevention paper that can be used.
【図１】本発明による偽造防止用紙の一実施例を示す平
面図である。FIG. 1 is a plan view showing an embodiment of a forgery prevention sheet according to the present invention.
１‥‥基材 ２‥‥印刷部 ３‥‥白色または無色透明部 ４‥‥コレステリック液晶部 ５‥‥白色部または無色透明部以外の部分 1 base material 2 printed part 3 white or colorless transparent part 4 cholesteric liquid crystal part 5 part other than white part or colorless transparent part
Claims (1)
たは無色透明部とは異なる偏光性を有する、裸眼による
目視では透明なコレステリック液晶部を設け、基材の白
色部または無色透明部以外の部分上に、裸眼による目視
で可視可能な印刷部を設けたことを特徴とする偽造防止
用紙。1. A cholesteric liquid crystal part having a polarizing property different from that of a white or colorless transparent part and transparent by the naked eye is provided on the white or colorless transparent part of the base material, and the white part or colorless transparent part of the base material is provided. A forgery-prevention paper characterized in that a printing part which can be visually observed by naked eyes is provided on a portion other than the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11126903A JP2000318399A (en) | 1999-05-07 | 1999-05-07 | Forgery preventive sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11126903A JP2000318399A (en) | 1999-05-07 | 1999-05-07 | Forgery preventive sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000318399A true JP2000318399A (en) | 2000-11-21 |
Family
ID=14946751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11126903A Pending JP2000318399A (en) | 1999-05-07 | 1999-05-07 | Forgery preventive sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000318399A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002033453A1 (en) * | 2000-10-19 | 2002-04-25 | Nhk Spring Co., Ltd. | Medium for identifying matter to be identified and method for production thereof |
| JP2003231380A (en) * | 2002-02-12 | 2003-08-19 | Nhk Spring Co Ltd | Discrimination medium for object and discrimination method |
| EP1778501A2 (en) * | 2004-08-12 | 2007-05-02 | Giesecke & Devrient GmbH | Security element comprising a support |
| US7708128B2 (en) | 2001-12-21 | 2010-05-04 | Giesecke & Devrient Gmbh | Valuable document and method and device for examining said valuable document |
-
1999
- 1999-05-07 JP JP11126903A patent/JP2000318399A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002033453A1 (en) * | 2000-10-19 | 2002-04-25 | Nhk Spring Co., Ltd. | Medium for identifying matter to be identified and method for production thereof |
| US6740431B2 (en) | 2000-10-19 | 2004-05-25 | Nhk Spring Co., Ltd. | Medium for identifying matter to be identified and method for production thereof |
| US7708128B2 (en) | 2001-12-21 | 2010-05-04 | Giesecke & Devrient Gmbh | Valuable document and method and device for examining said valuable document |
| JP2003231380A (en) * | 2002-02-12 | 2003-08-19 | Nhk Spring Co Ltd | Discrimination medium for object and discrimination method |
| WO2003069587A1 (en) | 2002-02-12 | 2003-08-21 | Nhk Spring Co., Ltd. | Identifying medium and identifying method for object |
| US7201821B2 (en) | 2002-02-12 | 2007-04-10 | Nhk Spring Co., Ltd. | Identifying medium and identifying method for object |
| CN1630892B (en) * | 2002-02-12 | 2011-06-08 | 日本发条株式会社 | Identifying medium and identifying method for object |
| EP1778501A2 (en) * | 2004-08-12 | 2007-05-02 | Giesecke & Devrient GmbH | Security element comprising a support |
| EP1778501B1 (en) * | 2004-08-12 | 2013-07-31 | Giesecke & Devrient GmbH | Security element comprising a support |
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