JP2003145965A - Forgery preventing printed matter - Google Patents
Forgery preventing printed matterInfo
- Publication number
- JP2003145965A JP2003145965A JP2001350240A JP2001350240A JP2003145965A JP 2003145965 A JP2003145965 A JP 2003145965A JP 2001350240 A JP2001350240 A JP 2001350240A JP 2001350240 A JP2001350240 A JP 2001350240A JP 2003145965 A JP2003145965 A JP 2003145965A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- thermochromic
- printed matter
- ink
- color
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 7
- 230000003287 optical effect Effects 0.000 claims description 24
- 239000000049 pigment Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 16
- 239000004986 Cholesteric liquid crystals (ChLC) Substances 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 7
- 238000004040 coloring Methods 0.000 claims description 4
- 210000004209 hair Anatomy 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 67
- 239000000976 ink Substances 0.000 description 40
- 238000000034 method Methods 0.000 description 25
- 239000010408 film Substances 0.000 description 13
- 239000004973 liquid crystal related substance Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 238000007650 screen-printing Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- -1 PbCl 2 Inorganic materials 0.000 description 6
- 239000010445 mica Substances 0.000 description 6
- 229910052618 mica group Inorganic materials 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910044991 metal oxide Inorganic materials 0.000 description 5
- 150000004706 metal oxides Chemical class 0.000 description 5
- 239000000123 paper Substances 0.000 description 5
- 238000007639 printing Methods 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000003086 colorant Substances 0.000 description 4
- 239000005264 High molar mass liquid crystal Substances 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 3
- 230000003098 cholesteric effect Effects 0.000 description 3
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- ZAZKJZBWRNNLDS-UHFFFAOYSA-N methyl tetradecanoate Chemical compound CCCCCCCCCCCCCC(=O)OC ZAZKJZBWRNNLDS-UHFFFAOYSA-N 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 229910015902 Bi 2 O 3 Inorganic materials 0.000 description 1
- 229910017493 Nd 2 O 3 Inorganic materials 0.000 description 1
- CGSLYBDCEGBZCG-UHFFFAOYSA-N Octicizer Chemical compound C=1C=CC=CC=1OP(=O)(OCC(CC)CCCC)OC1=CC=CC=C1 CGSLYBDCEGBZCG-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 239000004990 Smectic liquid crystal Substances 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229920004482 WACKER® Polymers 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- DHAZIUXMHRHVMP-UHFFFAOYSA-N butyl tetradecanoate Chemical compound CCCCCCCCCCCCCC(=O)OCCCC DHAZIUXMHRHVMP-UHFFFAOYSA-N 0.000 description 1
- 229910052980 cadmium sulfide Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- NOPFSRXAKWQILS-UHFFFAOYSA-N docosan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCCCCCO NOPFSRXAKWQILS-UHFFFAOYSA-N 0.000 description 1
- 229960000735 docosanol Drugs 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052976 metal sulfide Inorganic materials 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 229940043348 myristyl alcohol Drugs 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- WSGCRAOTEDLMFQ-UHFFFAOYSA-N nonan-5-one Chemical compound CCCCC(=O)CCCC WSGCRAOTEDLMFQ-UHFFFAOYSA-N 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Credit Cards Or The Like (AREA)
- Printing Methods (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複写機などによる
複製を利用した偽造を極めて困難にした偽造防止印刷物
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forgery-preventing printed matter in which forgery utilizing copying by a copying machine or the like is extremely difficult.
【０００２】[0002]
【従来の技術】近年、電子写真技術を利用した複写機が
普及し、これを利用して誰でもが簡単に紙などに印刷さ
れた文字や画像を複写することができるようになった。
特に、最近のカラーデジタル複写機によれば、原稿か複
写物かの見分けが極めて困難な複写物でさえも容易に作
成することができる。2. Description of the Related Art In recent years, copying machines utilizing electrophotographic technology have become widespread, and anyone can easily copy characters or images printed on paper using the copying machines.
In particular, with recent color digital copying machines, even a copy that is extremely difficult to distinguish between a document and a copy can be easily created.
【０００３】一般的なカラーデジタル複写機の原理は以
下のようである。すなわち、まず原稿に光を照射し、反
射光をＣＣＤラインセンサで検知する。ＣＣＤラインセ
ンサでは、反射光の強度に応じたデジタル信号を生成
し、複写機内のメモリに送信する。この読み取り過程を
レッド（Ｒ）、グリーン（Ｇ）、ブルー（Ｂ）の３色に
ついて行い、それぞれの場合のデジタル信号をメモリに
格納する。次に格納されたデジタル信号に基づいて、レ
ーザ光を感光体ドラムの表面に照射し、イエロー
（Ｙ）、マゼンタ（Ｍ）、シアン（Ｃ）、ブラック（Ｂ
ｋ）のトナーを感光体ドラムの上に順次静電吸着させ、
これらのトナーを順次紙などのシート上に転写して定着
させる。これにより、カラーの画像が形成された精巧な
複写物を得ることができる。The principle of a general color digital copying machine is as follows. That is, first, the original is irradiated with light, and the reflected light is detected by the CCD line sensor. The CCD line sensor generates a digital signal according to the intensity of the reflected light and sends it to the memory in the copying machine. This reading process is performed for three colors of red (R), green (G), and blue (B), and the digital signal in each case is stored in the memory. Next, based on the stored digital signal, the surface of the photoconductor drum is irradiated with laser light, and yellow (Y), magenta (M), cyan (C), black (B
The toner of k) is sequentially electrostatically adsorbed on the photosensitive drum,
These toners are sequentially transferred and fixed on a sheet such as paper. This makes it possible to obtain an elaborate copy on which a color image is formed.
【０００４】[0004]
【発明が解決しようとする課題】係るカラー複写は便利
である反面、株券、債券、約束手形、小切手などの有価
証券や、入場券、搭乗券などの印刷物などの不正な複写
が容易に行われてしまうという問題が増加しつつある。
このため、容易に複写できないように印刷物に複製防止
対策を施す提案が種々なされている。While color copying is convenient, illegal copying of securities such as stock certificates, bonds, promissory notes and checks, and printed materials such as admission tickets and boarding passes is easy. The problem of being lost is increasing.
For this reason, various proposals have been made to take measures to prevent duplication of printed matter so that it cannot be easily copied.
【０００５】その一つとして、カラー複写による複写物
の色が原稿の色と異なるように再現させようとする技術
が提案されている。これは、例えば原稿とされうる有価
証券などの一部を非常に淡い色で着色すると、複写物で
は淡い色の部分が正確に再現できないという現象を利用
した偽造防止技術である。また、原稿に大きさの異なる
網点を形成しておくことにより複写しても小さい網点の
再現性が悪化し、原稿の網点が正確に再現ができないよ
うにした技術の提案もある。さらにはカラー複写機のト
ナーには無い緑、紫、橙、金、銀等の色相のインキで一
部のパターンを印刷しておくことで複写物の色再現性が
悪化するようにした技術や、人間の視認度が低い領域例
えば３８０ｎｍ〜４５０ｎｍおよび６５０〜７８０ｎｍ
あたりの波長域に特徴をもたせた２種類のインキを用い
て印刷を施すことで見た目には原稿上では同色に認識さ
れるが、カラー複写により得られる複写物上では異なる
色に再現されてしまうようにした技術等もある。As one of them, there has been proposed a technique for reproducing the color of a copy by color copying so as to be different from the color of the original. This is an anti-counterfeiting technique that utilizes a phenomenon in which, for example, when a portion of securities such as a manuscript is colored with a very light color, the light color portion cannot be accurately reproduced in a copy. There is also a proposal of a technique in which halftone dots having different sizes are formed on a document, so that the reproducibility of small halftone dots is deteriorated even when copying is performed, so that halftone dots of a document cannot be accurately reproduced. In addition, there is a technique to reduce the color reproducibility of the copy by printing some patterns with inks of hues such as green, purple, orange, gold, and silver that are not found in toner of color copiers. , Areas where human visibility is low, eg 380 nm to 450 nm and 650 to 780 nm
By printing with two types of inks that have characteristics in the corresponding wavelength range, they are visually recognized as the same color on the original, but they are reproduced in different colors on the copy obtained by color copying. There is also a technology to do so.
【０００６】しかし、カラー複写機では、３色に分解さ
れてメモリに格納されたデジタルデータを変更すること
によって、出力する色を補正することが可能である。ま
た、カラー複写機と同様の原理を利用してカラースキャ
ナーで読み込んだデジタルデータをコンピュータで補正
し、カラープリンタまたはカラー複写機で出力するよう
なデジタルプレスにおいても出力する色を補正すること
が可能である。従って、現在多少の手間をかければ、こ
れらの装置を利用して原稿の色を精巧に再現することが
可能であり、上記のような技術では偽造を完全に防止す
ることはできない。However, in the color copying machine, it is possible to correct the output color by changing the digital data separated into three colors and stored in the memory. Also, using the same principle as a color copier, digital data read by a color scanner can be corrected by a computer, and the output color can be corrected even by a digital press that is output by a color printer or color copier. Is. Therefore, with some effort at present, it is possible to use these devices to reproduce the color of a document in an elaborate manner, and the above technique cannot completely prevent forgery.
【０００７】また、カラー複写機では再現不可能な特殊
部分を有価証券などに設けておく技術も提案されてい
る。この中、ホログラム箔などのＯＶＤ箔を有価証券な
どの表面上に設ける技術はすでに実用化されている。こ
れによれば、有価証券などに設けたホログラムの銀面が
光を鏡面反射するため、ＣＣＤラインセンサに反射光が
入射せず、原稿で銀面だった部分が複写物では黒色に再
現されることになる。また、屈折率の異なるセラミック
を適当な膜厚を持つ複数層に積層することにより、見る
角度によって色が変化する特殊な光学薄膜が形成される
が、これを有価証券などの表面に設けるようにした技術
もある。この光学薄膜は複写物では得ることができない
ので、容易に真偽判定が可能となる。さらに、この方法
で形成された積層薄膜を細かく砕き、破片をインキに混
入して印刷を行う方法も提案されている。Further, a technique has been proposed in which a special portion that cannot be reproduced by a color copying machine is provided in securities or the like. Among these, the technique of providing an OVD foil such as a hologram foil on the surface of securities or the like has already been put into practical use. According to this, since the silver surface of the hologram provided on the securities and the like specularly reflects the light, the reflected light does not enter the CCD line sensor, and the portion which was the silver surface of the original is reproduced black in the copy. It will be. Also, by stacking ceramics with different refractive indexes into multiple layers with appropriate thickness, a special optical thin film whose color changes depending on the viewing angle is formed. There is also a technology. Since this optical thin film cannot be obtained from a copy, it is possible to easily determine the authenticity. Furthermore, a method has also been proposed in which a laminated thin film formed by this method is finely crushed and fragments are mixed with ink to perform printing.
【０００８】しかしながら、これらの技術では、ホログ
ラム箔やセラミック膜を蒸着やスパッタリングのような
ドライコーティングで形成する必要があり、工程が複雑
化する上、製造コストが極めて高いという問題がある。However, in these techniques, it is necessary to form the hologram foil or the ceramic film by dry coating such as vapor deposition or sputtering, which complicates the process and causes an extremely high manufacturing cost.
【０００９】さらに、可視光線の下では識別できない部
分を有価証券などに設けておく技術も提案されている。
例えば、赤外線吸収色素を含有するインキで原稿の一部
に印刷しておくことにより、市販されている複写機およ
びプリンタのトナーには赤外線吸収能力はないので、複
写物では原稿の赤外線吸収機能までもは再現することが
できないようにした技術である。このようなものの真偽
判断は赤外線を利用した検証機によって可能である。ま
た、紫外線の照射によって蛍光を発する蛍光体を含有す
るインキで原稿の一部に印刷しておいた場合にも、市販
されている複写機およびプリンタではそのような蛍光機
能を再現できず、従ってブラックライトを照射すると、
本物は発光するが、偽造品は発光せず、容易に真偽判断
が可能となる。このほかにも様々な提案がされている。Further, there has been proposed a technique of providing a security or the like with a portion which cannot be identified under visible light.
For example, by printing a part of the original with ink containing infrared absorbing dye, the toner of commercially available copying machines and printers does not have the infrared absorbing ability. Momo is a technique that cannot be reproduced. The authenticity of such a thing can be judged by a verifier using infrared rays. Further, even when a part of the original is printed with an ink containing a fluorescent substance that emits fluorescence upon irradiation with ultraviolet rays, such a fluorescent function cannot be reproduced by a commercially available copying machine or printer, and therefore, When illuminated with black light,
The genuine product emits light, but the counterfeit product does not emit light, and it is possible to easily determine the authenticity. Besides this, various proposals have been made.
【００１０】本発明は上記事情を考慮してなされたもの
であり、市販のカラー複写機などでは偽造が極めて困難
であり、かつ廉価で製造する事が可能であり、真正品と
偽造品を明確に判別することができる偽造防止印刷物を
提供する事を目的とする。The present invention has been made in consideration of the above circumstances, and it is extremely difficult to counterfeit it with a commercially available color copying machine, and it is possible to manufacture it at a low price. It is an object of the present invention to provide a forgery-proof printed matter that can be discriminated from.
【００１１】[0011]
【課題を解決するための手段】上記目的を達成するため
になされ、請求項１に記載の発明は、少なくとも基材の
片面上にサーモクロミック層および着色層と、それらを
覆う光学干渉層が設けられており、サーモクロミック層
は加温または冷却によって変色するサーモクロミックイ
ンキで構成されていて、さらに非加温時または非冷却時
においてはサーモクロミック層と着色層のそれぞれが判
別不可能な状態になっていることを特徴とする偽造防止
印刷物である。In order to achieve the above object, the invention according to claim 1 provides a thermochromic layer and a coloring layer and an optical interference layer covering them on at least one surface of the substrate. The thermochromic layer is composed of a thermochromic ink that discolors by heating or cooling, and the thermochromic layer and the colored layer are indistinguishable when not heated or cooled. It is an anti-counterfeit printed matter characterized by having become.
【００１２】また、請求項２に記載の発明は、請求項１
に記載の偽造防止印刷物において、サーモクロミック層
およびそのサーモクロミック層が形作るパターンとは逆
版の関係になるパターン状の着色層が毛抜き合わせで同
一面状に位置するように設けられ、さらにサーモクロミ
ック層はある温度以上になると消色するサーモクロミッ
クインキで、着色層は消色前のサーモクロミックインキ
と同色のインキでそれぞれ構成されており、さらにそれ
らを覆うように光学干渉層が設けられていることを特徴
とする。The invention described in claim 2 is the same as claim 1.
In the anti-counterfeit printed matter according to, the thermochromic layer and a patterned colored layer that is in an inverse relationship with the pattern formed by the thermochromic layer are provided so as to be located in the same plane by tweezers, and the thermochromic The layer is made of thermochromic ink that decolors at a certain temperature or higher, and the colored layer is made of ink of the same color as the thermochromic ink before decoloring, and an optical interference layer is provided to cover them. It is characterized by
【００１３】さらにまた、請求項３に記載の発明は、請
求項１に記載の偽造防止印刷物において、少なくとも基
材の片面上にサーモクロミック層とパターン状の着色層
がこの順序で設けられ、さらにそれらを覆うように光学
干渉層が設けられていることを特徴とする。Furthermore, the invention according to claim 3 is the anti-counterfeit printed matter according to claim 1, wherein a thermochromic layer and a patterned colored layer are provided in this order on at least one side of the substrate, and An optical interference layer is provided so as to cover them.
【００１４】さらにまた、請求項４に記載の発明は、請
求項１に記載の偽造防止印刷物において、少なくとも基
材の片面上にパターン状の着色層とサーモクロミック層
がこの順序で設けられ、さらにそれらを覆うように光学
干渉層が設けられていることを特徴とする。Furthermore, the invention according to claim 4 is the anti-counterfeit printed matter according to claim 1, wherein a patterned colored layer and a thermochromic layer are provided in this order on at least one side of the substrate, and An optical interference layer is provided so as to cover them.
【００１５】さらにまた、請求項５に記載の発明は、請
求項１ないし請求項４のいずれか１項に記載の偽造防止
印刷物において、光学干渉層がパール顔料を含有するイ
ンキからなることを特徴とする。Furthermore, the invention according to claim 5 is the anti-counterfeit printed matter according to any one of claims 1 to 4, wherein the optical interference layer is made of an ink containing a pearl pigment. And
【００１６】さらにまた、請求項６に記載の発明は、請
求項１ないし請求項４のいずれか１項に記載の偽造防止
印刷物において、光学干渉層がコレステリック液晶顔料
を含有するインキからなることを特徴とする。Furthermore, the invention according to claim 6 is the anti-counterfeit printed matter according to any one of claims 1 to 4, wherein the optical interference layer comprises an ink containing a cholesteric liquid crystal pigment. Characterize.
【００１７】[0017]
【発明の実施の形態】以下、本発明の実施の形態によっ
て図面を参照して詳細に説明する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
【００１８】図１は本発明の偽造防止印刷物の一実施形
態を示す概略平面説明図であり、図２は図１の偽造防止
印刷物をある温度Ｔの環境下においた場合の見え方を示
す概略平面説明図であり、図３は図１と図２に示す偽造
防止印刷物のＸ−Ｘ’線における概略断面構成説明図で
ある。また、図４、図５は本発明の偽造防止印刷物の他
の実施形態を示す概略断面構成説明図である。図４、図
５はそれぞれの層構成は異なるが、平面上で見た場合は
いずれも図１や図２のように見えるようになっている。FIG. 1 is a schematic plan view showing an embodiment of the anti-counterfeit printed material of the present invention, and FIG. 2 is a schematic view showing how the anti-counterfeit printed material of FIG. 1 looks under an environment of a certain temperature T. FIG. 3 is a plan explanatory view, and FIG. 3 is a schematic sectional configuration explanatory view taken along line XX ′ of the anti-counterfeit printed matter shown in FIGS. 1 and 2. 4 and 5 are schematic sectional configuration explanatory views showing other embodiments of the forgery-preventing printed material of the present invention. 4 and 5 are different from each other in layer structure, but when viewed on a plane, they both look like FIGS. 1 and 2.
【００１９】図１に示す偽造防止印刷物１は、通常の環
境下では基材１１および光学干渉層１２が見え、光学干
渉層１２は目視角度により色が変化するようになってい
る。また、加温時あるいは冷却時において偽造防止印刷
物１は、図２に示したように着色層１４が形作るパター
ンが出現し、目視角度を変化させることにより着色層１
４の部分における顕著な色変化が観察される。In the anti-counterfeit printed matter 1 shown in FIG. 1, the base material 11 and the optical interference layer 12 can be seen under a normal environment, and the color of the optical interference layer 12 changes depending on the visual angle. Further, in the anti-counterfeit printed matter 1 during heating or cooling, the pattern formed by the colored layer 14 appears as shown in FIG. 2, and the colored layer 1 is changed by changing the visual angle.
A noticeable color change in part 4 is observed.
【００２０】基材１１は、紙、プラスチック、木材、ガ
ラスまたは樹脂などがからなり、偽造防止印刷物１の用
途に応じてこれらから任意に選択される。The substrate 11 is made of paper, plastic, wood, glass, resin or the like, and is arbitrarily selected from these depending on the use of the anti-counterfeit printed matter 1.
【００２１】一方、光学干渉層１２は、パール顔料を含
有するインキもしくはコレステリック液晶顔料を含有す
るインキで構成されており、後述する構成の着色層１４
やサーモクロミック層１３を覆うように設けられてい
る。On the other hand, the optical interference layer 12 is composed of an ink containing a pearl pigment or an ink containing a cholesteric liquid crystal pigment.
It is provided so as to cover the thermochromic layer 13.
【００２２】パール顔料としては、例えば、雲母に反射
性（高虹彩反射）を与える材料として、可視域に透明で
屈折率が２．０以上ある金属酸化物などを被覆したもの
が使用できる。雲母に反射性を与える材料としては、Ｓ
ｂ2Ｓ3、Ｆｅ2Ｏ3、ＰｂＯ、ＺｎＳｅ、ＣｄＳ、Ｂｉ2
Ｏ3、ＴｉＯ2、ＰｂＣｌ2、ＣｅＯ2、Ｔａ2Ｏ5、Ｚｎ
Ｓ、ＺｎＯ、ＣｄＯ、Ｎｄ2Ｏ3、Ｓｂ2Ｏ3、ＳｉＯおよ
びＩｎＯ3の金属酸化物や金属硫化物などが挙げられ、
これらを単層もしくは複層の状態で雲母上に被覆する。As the pearl pigment, it is possible to use, for example, a material coated with a metal oxide which is transparent in the visible region and has a refractive index of 2.0 or more as a material which gives the mica its reflectivity (high iris reflection). As a material that gives the mica reflectivity, S
b 2 S 3 , Fe 2 O 3 , PbO, ZnSe, CdS, Bi 2
O 3 , TiO 2 , PbCl 2 , CeO 2 , Ta 2 O 5 , Zn
Examples thereof include metal oxides and metal sulfides of S, ZnO, CdO, Nd 2 O 3 , Sb 2 O 3 , SiO, and InO 3 .
These are coated on the mica in the state of single layer or multiple layers.
【００２３】雲母と金属酸化膜などが組み合わされた
時、その屈折率の差が０．４より大きいことから、入射
した白色光の反射量が多く、また同時に雲母と金属酸化
膜などとの界面で複屈折を起こすことから、得られるパ
ール顔料は高虹彩反射性となり、変色効果をより効果的
に助長する働きをする。When mica and a metal oxide film are combined, the difference in the refractive index between them is larger than 0.4, so that a large amount of incident white light is reflected, and at the same time, the interface between the mica and the metal oxide film is large. Since birefringence occurs in the obtained pearl pigment, the pearl pigment obtained has a high iris reflection property and acts to promote the color change effect more effectively.
【００２４】この時、雲母を被覆する金属酸化膜などの
膜厚を制御することで任意の色調の高虹彩反射性を持っ
たパール顔料とすることができるが、膜厚は、１〜１０
００ｎｍ、望ましくは２０〜２００ｎｍの範囲に設定し
た時が可視域に対して高虹彩反射性となるので望まし
い。At this time, a pearl pigment having a high iris reflectivity with an arbitrary color tone can be obtained by controlling the film thickness of the metal oxide film or the like that covers the mica, but the film thickness is from 1 to 10
It is desirable that the thickness is set to 00 nm, preferably 20 to 200 nm, because the iris is highly reflective in the visible range.
【００２５】また、光学干渉層１２を構成するインキに
含有させるコレステリック液晶顔料は、分子軸に垂直な
方向に螺旋周期構造を持ち、その螺旋構造のピッチが光
と相互関係を構築しているものである。すなわち、コレ
ステリック液晶顔料は螺旋軸に沿って光の屈折率が周期
的に変動するため、螺旋ピッチに対応した波長の光を選
択的に反射するのである。従って、何らかの方法で螺旋
ピッチを制御し、可視光部の中の希望する光の色を反射
する螺旋ピッチが得られたところで、その螺旋構造を固
定化できれば、思い通りのコレステリック螺旋反射色を
作り出すことができる。固定化のための代表的な例とし
て、高分子液晶形成化合物と多官能性エネルギー線重合
性化合物の組み合わせになる組成物を、紫外線照射によ
り重合させることによりコレステリック液晶顔料の螺旋
構造を固定化する方法が例示できる。この時、螺旋ピッ
チの制御は温度にて行う。The cholesteric liquid crystal pigment contained in the ink forming the optical interference layer 12 has a helical periodic structure in the direction perpendicular to the molecular axis, and the pitch of the helical structure establishes a mutual relationship with light. Is. That is, since the refractive index of light in the cholesteric liquid crystal pigment periodically changes along the spiral axis, light having a wavelength corresponding to the spiral pitch is selectively reflected. Therefore, if you can control the spiral pitch in some way and obtain the spiral pitch that reflects the desired color of light in the visible light part, if you can fix the spiral structure, you can create the desired cholesteric spiral reflection color. You can As a typical example for immobilization, a composition which is a combination of a polymer liquid crystal forming compound and a polyfunctional energy ray-polymerizable compound is polymerized by irradiation of ultraviolet rays to immobilize the helical structure of a cholesteric liquid crystal pigment. The method can be illustrated. At this time, the spiral pitch is controlled by the temperature.
【００２６】また、コレステリック液晶顔料の螺旋はそ
の化学構造により右回転および左回転になり得て、同様
に温度制御により螺旋ピッチの制御ができ、また紫外線
照射により螺旋構造の固定が図れる。Further, the spiral of the cholesteric liquid crystal pigment can be turned to the right or left depending on its chemical structure. Similarly, the spiral pitch can be controlled by controlling the temperature, and the spiral structure can be fixed by irradiating with ultraviolet rays.
【００２７】コレステリック高分子液晶の出発物質とし
ては、紫外線から赤外線の光の波長に等しいピッチを有
するねじれ構造を持つ全てのコレステリック液晶物質が
好ましい。即ち、キラル相を有する液晶物質はネマチッ
ク、スメクチックまたはディスコチック構造にキラル物
質を加えることで製造できる。キラル物質の種類及び分
子量がねじれ構造のピッチ、延いては反射光の波長を決
定する。ねじれ構造のねじれ方向は左向きでも右向きで
もよい。さらに、出発物質は重合性基、重縮合性基また
は重付加に有効な基を有し、これらの基の内、少なくと
も一部は二官能性、三官能性及び多官能性を有し、例え
ば、メタクリルオキシ基、アクリルオキシ基等を有する
ことが好ましく、三次元架橋液晶ポリオルガノシロキサ
ンが適当である。As the starting material for the cholesteric polymer liquid crystal, all cholesteric liquid crystal materials having a twist structure having a pitch equal to the wavelength of light from ultraviolet rays to infrared rays are preferable. That is, a liquid crystal substance having a chiral phase can be manufactured by adding a chiral substance to a nematic, smectic or discotic structure. The type and molecular weight of the chiral substance determines the pitch of the twisted structure and thus the wavelength of the reflected light. The twisting direction of the twist structure may be leftward or rightward. Further, the starting material has a polymerizable group, a polycondensable group or a group effective for polyaddition, and at least a part of these groups has difunctionality, trifunctionality and polyfunctionality, for example, , A methacryloxy group, an acryloxy group, and the like are preferable, and a three-dimensional crosslinked liquid crystal polyorganosiloxane is suitable.
【００２８】コレステリック高分子液晶顔料の製造に際
しては、例えば、まず三次元架橋性液晶ポリオルガノシ
ロキサンと光重合開始剤の混合液を、金属支持体、プラ
スチック支持体またはガラス支持体等の支持体上に加温
しながらドクターを用いて剪断力を加えながら塗布し、
液晶分子を配列させ、液晶層を形成する。次に、液晶層
に紫外線を照射し、三次元架橋させる。そして、三次元
架橋した液晶層を支持体から剥離し、万能ミル等で粉砕
し、フレーク状の液晶顔料を得る。この顔料の大きさは
５μｍ〜５０ｍｍの粒度を有し、１〜１００μｍ、好ま
しくは５〜５０μｍの厚さを有するものがよい。また、
前記支持体は場合により、例えばポリイミド又はポリビ
ニルアルコールからなる配向層が形成されているもので
もよい。また、液晶分子の配向は、２枚のシート間で剪
断力を加えて行う方法も可能であり、ポリエチレンフタ
レートのシートを使用して配向する方法が好ましい。In producing the cholesteric polymer liquid crystal pigment, for example, first, a mixed solution of a three-dimensional crosslinkable liquid crystal polyorganosiloxane and a photopolymerization initiator is placed on a support such as a metal support, a plastic support or a glass support. Apply while applying shearing force using a doctor while heating to
Liquid crystal molecules are aligned to form a liquid crystal layer. Next, the liquid crystal layer is irradiated with ultraviolet rays to be three-dimensionally crosslinked. Then, the three-dimensionally crosslinked liquid crystal layer is peeled from the support and pulverized by a universal mill or the like to obtain a flake liquid crystal pigment. The pigment has a particle size of 5 μm to 50 mm and a thickness of 1 to 100 μm, preferably 5 to 50 μm. Also,
The support may optionally have an alignment layer formed of, for example, polyimide or polyvinyl alcohol. The liquid crystal molecules may be aligned by applying a shearing force between the two sheets, and a polyethylene phthalate sheet is preferably used for alignment.
【００２９】一方、サーモクロミック層１３は、ある温
度を境に発色もしくは消色する可逆性のサーモクロミッ
ク材料からなり、色素体としての染料中間体と染料中間
体と結合して発色させる酸性物質およびこの酸性物質を
結合させたり引き離したりする温度制御剤の３成分から
構成されており、これらの３成分をマイクロカプセル化
してインキ化したものである。On the other hand, the thermochromic layer 13 is composed of a reversible thermochromic material that develops or decolors at a certain temperature, and a dye intermediate as a pigment body and an acidic substance that combines with the dye intermediate to produce a color. It is composed of three components of a temperature control agent that binds or separates the acidic substance, and these three components are microencapsulated to form an ink.
【００３０】染料中間体としては主にロイコ染料が使用
され、酸性物質として顕色剤が使用され、また温度制御
剤としてある温度で溶解する溶媒が使用される。ロイコ
染料と顕色剤は、接触すると互いの電子の授受により発
色する。そこに温度制御剤である溶媒が介入され温度が
上昇すると、この溶媒が溶けて発色体の中の顕色剤をロ
イコ染料から引き離してしまい、色素体はもとの無色の
染料中間体に戻ってしまう。また、ある温度以下になる
と溶媒が固体となり、顕色剤の電子を抱え込んでいる力
がなくなり、顕色剤は電子受容体として、ロイコ染料は
電子供与体に働いて再び発色する。このように温度制御
体である溶媒が温度の昇降により、液体になったり固体
になったりすることで、可逆的に色が発色および消色す
る。A leuco dye is mainly used as a dye intermediate, a developer is used as an acidic substance, and a solvent that dissolves at a certain temperature is used as a temperature control agent. When the leuco dye and the color developer come into contact with each other, they transfer colors to each other to develop a color. When a solvent, which is a temperature control agent, intervenes there and the temperature rises, this solvent melts and separates the developer in the color former from the leuco dye, and the pigment body returns to the original colorless dye intermediate. Will end up. Further, when the temperature becomes lower than a certain temperature, the solvent becomes solid, and the force of the developer for holding electrons is lost, and the developer acts as an electron acceptor and the leuco dye acts on an electron donor to develop a color again. In this way, the solvent, which is the temperature control body, becomes liquid or solid by the rise and fall of the temperature, so that the color reversibly develops and disappears.
【００３１】この温度制御体である溶媒には高級アルコ
ール系化合物、高級脂肪酸エステル類、リン酸エステル
類があり、具体的にはジブチルケトン（−５９℃：変色
温度）、ｎ−オクチルアルコール（−４０℃）、ｎ−デ
シルアルコール（−１３℃）、ミルスチン酸ブチル（−
３℃）、リン酸ジフェニル２エチルヘキシル（４℃）、
ミリスチン酸メチル（１０℃）、ｎ−ラウリルアルコー
ル（１６℃）、ｎ−ドデシルアルコール（２０℃）、ｎ
−ミリスチルアルコール（３５℃）、ｎ−セチルアルコ
ール（４５℃）、ステアリルアルコール（５３℃）、ｎ
−ドコシルアルコール（７０℃）などがある。The solvent which is the temperature control agent includes higher alcohol compounds, higher fatty acid esters and phosphoric acid esters, and specifically, dibutyl ketone (-59 ° C: discoloration temperature) and n-octyl alcohol (- 40 ° C), n-decyl alcohol (-13 ° C), butyl myristate (-
3 ° C.), diphenyl 2-ethylhexyl phosphate (4 ° C.),
Methyl myristate (10 ° C), n-lauryl alcohol (16 ° C), n-dodecyl alcohol (20 ° C), n
-Myristyl alcohol (35 ° C), n-cetyl alcohol (45 ° C), stearyl alcohol (53 ° C), n
-Such as docosyl alcohol (70 ° C).
【００３２】他方、着色層１４は、通常使用される印刷
用インキで設ければよく、特に制限はないが、色相を黒
もしくは濃色のものにすると光学干渉層１２の色変化が
大きくなり、偽造防止効果がより高くなり望ましい。こ
れらのサーモトロピック層１３並びに着色層１４は基材
１１の片面上に設けられている。これらの層は、図３に
示すように、サーモトロピック層１３およびこのサーモ
トロピック層１３が形作るパターンとは逆版の関係にな
るパターン状の着色層１４を毛抜き合わせで見当良好に
設けてもよいし、図４に示すように、サーモトロピック
層１５とパターン状の着色層１６をこの順序で設けて
も、あるいは図５に示すように、パターン状の着色層１
６とサーモトロピック層１５をこの順序で設けるように
してもよい。On the other hand, the coloring layer 14 may be provided with a printing ink which is usually used, and is not particularly limited, but when the hue is black or dark, the color change of the optical interference layer 12 becomes large, The anti-counterfeiting effect is higher, which is desirable. The thermotropic layer 13 and the coloring layer 14 are provided on one surface of the base material 11. As shown in FIG. 3, these layers may be provided with a thermotropic layer 13 and a colored layer 14 in a pattern which is in an inverse relationship to the pattern formed by the thermotropic layer 13 by bleeding for good registration. Then, as shown in FIG. 4, the thermotropic layer 15 and the patterned colored layer 16 may be provided in this order, or, as shown in FIG. 5, the patterned colored layer 1
6 and the thermotropic layer 15 may be provided in this order.
【００３３】[0033]
【実施例】以下、本発明を具体的な実施例を挙げた詳細
に説明する。
＜実施例１＞連量９０ｋｇの上質紙にスクリーン印刷用
プロセス墨インキを使用してスクリーン印刷法により約
２μｍのインキ膜厚にて、パターン状の着色層を印刷し
て、さらに下記［サーモクロミックインキの組成]から
なるインキを使用してスクリーン印刷法により約５μｍ
のインキ膜厚にて、前記墨インキを印刷した上に毛抜き
で重なるようにパターン状のサーモクロミック層を印刷
した。続いて、サーモトロピック層の上に下記［パール
インキの組成］からなるインキを使用してスクリーン印
刷法により約５μｍのインキ膜厚にて、着色層およびサ
ーモクロミック層の部分が隠れるように光学干渉層を印
刷し、最後に通常のオフセット印刷法にて光学干渉層上
に絵柄を印刷し、偽造防止印刷物を得た。
［サーモクロミックインキの組成］
サーモクロミック材料 ４０重量部
（サーマルカラーＯＲ−３０ブラック 記録素材総合研究所社製）
スクリーンインキメジウム ６０重量部
（アクアＱＬ 帝国インキ製造社製）
［パールインキの組成］
パール顔料（ＰＣ２０００−ＲＢ 日本光研工業社製） ２０重量部
スクリーンインキメジウム ７０重量部
（ＳＳ ＮＳＡメジウム 東洋インキ製造社製）The present invention will be described in detail below with reference to specific examples. <Example 1> A pattern-shaped colored layer was printed on a high-quality paper of continuous weight of 90 kg with a screen printing process ink using a screen printing process with an ink film thickness of about 2 μm. About 5 μm by screen printing method using ink composed of ink composition]
With the above ink film thickness, a patterned thermochromic layer was printed so as to overlap with the black ink by removing the hair. Subsequently, an ink having the composition of the following [Pearl Ink] is used on the thermotropic layer by the screen printing method to form an ink film having an ink film thickness of about 5 μm, so that the colored layer and the thermochromic layer are covered by optical interference. The layer was printed, and finally, a pattern was printed on the optical interference layer by a usual offset printing method to obtain an anti-counterfeit printed matter. [Composition of thermochromic ink] Thermochromic material 40 parts by weight (Thermal Color OR-30 Black manufactured by Recording Materials Research Institute) Screen ink medium 60 parts by weight (Aqua QL Teikoku Ink Manufacturing Co., Ltd.) [Pearl ink composition] Pearl Pigment (PC2000-RB manufactured by Nippon Koken Kogyo Co., Ltd.) 20 parts by weight Screen ink medium 70 parts by weight (SS NSA medium Toyo Ink Manufacturing Co., Ltd.)
【００３４】得られた偽造防止印刷物を見ると、印刷物
の一部分が虹彩色に見え、更に虹彩色の部分を手のひら
で暖めると、サーモクロミック層の色が消色し、文字パ
ターンが出現してその文字パターン部分のみが虹彩色に
見えることより、より一層の偽造防止効果を奏すること
が確認された。Looking at the obtained anti-counterfeit printed matter, a part of the printed matter looks like an iris color, and when the iris-colored portion is further warmed by the palm, the color of the thermochromic layer is erased and a character pattern appears. It was confirmed that the anti-counterfeiting effect was further enhanced by the fact that only the character pattern portion looked iris color.
【００３５】＜実施例２＞連量９０ｋｇの上質紙にスク
リーン印刷用プロセス墨インキを使用してスクリーン印
刷法により約２μｍのインキ膜厚にて、パターン状の着
色層を印刷して、さらに上記［サーモクロミックインキ
の組成]からなるインキを使用してスクリーン印刷法に
より約５μｍのインキ膜厚にて、パターン状の着色層に
対して毛抜きで重なるようにパターン状のサーモクロミ
ック層を印刷した。続いてサーモクロミック層の上に下
記［コレステリック液晶インキの組成］からなるインキ
を使用してスクリーン印刷法により約５μｍのインキ膜
厚にて、着色層およびサーモクロミック層の部分全体が
隠れるように光学干渉層を印刷し、最後に通常のオフセ
ット印刷法にて絵柄を光学干渉層上に印刷し、偽造防止
印刷物を得た。
［コレステリック液晶インキの組成]
コレステリック液晶顔料（ワッカーケミカル社製） ２０重量部
スクリーンインキメジウム ８０重量部
（ＳＳ ＮＳＡメジウム 東洋インキ製造社製）Example 2 A patterned colored layer was printed on a high-quality paper of continuous weight of 90 kg with a process ink for screen printing by an ink film thickness of about 2 μm by a screen printing method. An ink having the composition of [thermochromic ink] was used to print a patterned thermochromic layer by a screen printing method with an ink film thickness of about 5 μm so as to overlap the patterned colored layer by removing hairs. Then, an ink consisting of the following [composition of cholesteric liquid crystal ink] is used on the thermochromic layer by the screen printing method to form an optical film with an ink film thickness of about 5 μm so that the entire colored layer and thermochromic layer are hidden. The interference layer was printed, and finally, a pattern was printed on the optical interference layer by a usual offset printing method to obtain a counterfeit-proof printed matter. [Composition of cholesteric liquid crystal ink] Cholesteric liquid crystal pigment (manufactured by Wacker Chemical Co., Ltd.) 20 parts by weight Screen ink medium 80 parts by mass (SS NSA medium Toyo Ink Co., Ltd.)
【００３６】得られた偽造防止印刷物を観察すると、印
刷物の一部分が虹彩色に見え、また角度を違えて観察す
ることによって色相が変わって見えた。さらに虹彩色の
部分を手のひらで暖めると、サーモクロミック層の色が
消色し、文字パターンが出現してその文字パターン部分
のみが虹彩色に見えた。以上のことにより、得られた印
刷物がより一層の偽造防止効果を奏することが確認され
た。When the obtained anti-counterfeit printed matter was observed, a part of the printed matter looked like an iris color, and the hue was changed by observing at different angles. When the iris-colored part was further warmed with the palm of the hand, the color of the thermochromic layer disappeared, and a character pattern appeared and only the character pattern part appeared iris-colored. From the above, it was confirmed that the obtained printed matter has a further anti-counterfeiting effect.
【００３７】[0037]
【発明の効果】以上述べたように、本発明は光学干渉層
の下層に加温または冷却によって変化するサーモクロミ
ック層を設けた構成の虹彩色性反射性を付加した偽造防
止印刷物であるのと同時に、加温または冷却時にはサー
モクロミック層が変色することで、文字パターン等が出
現するようにした、より一層の偽造防止効果が期待でき
る。As described above, the present invention is an anti-counterfeit printed matter in which an iris color reflective property is added to a structure in which a thermochromic layer which is changed by heating or cooling is provided below the optical interference layer. At the same time, the thermochromic layer discolors during heating or cooling, so that a character pattern or the like appears, and a further anti-counterfeiting effect can be expected.
【図１】本発明の偽造防止印刷物の一実施形態を示す概
略平面説明図である。FIG. 1 is a schematic plan explanatory view showing an embodiment of an anti-counterfeit printed material of the present invention.
【図２】本発明の偽造防止印刷物におけるパターン出現
の状況を示す概略平面説明図である。FIG. 2 is a schematic plan explanatory view showing a situation of appearance of a pattern in the anti-counterfeit printed matter of the present invention.
【図３】図１に示す偽造防止印刷物のＸ−Ｘ’線におけ
る概略断面構成説明図である。FIG. 3 is a schematic cross-sectional configuration explanatory view taken along line XX ′ of the anti-counterfeit printed matter shown in FIG. 1.
【図４】本発明の他の実施形態に係る偽造防止印刷物の
概略断面構成説明図である。FIG. 4 is a schematic cross-sectional configuration explanatory view of an anti-counterfeit printed matter according to another embodiment of the present invention.
【図５】本発明のさらに他の実施形態に係る偽造防止印
刷物の概略断面構成説明図である。FIG. 5 is a schematic cross-sectional configuration explanatory view of an anti-counterfeit printed matter according to still another embodiment of the present invention.
１、２１、２２・・偽造防止印刷物 １１・・基材 １２・・光学干渉層 １３、１５・・サーモクロミック層 １４、１６・・着色層 1, 21, 22 ... Anti-counterfeit printed matter 11 ... Base material 12 ... Optical interference layer 13, 15 ... Thermochromic layer 14, 16 ...
Claims (6)
ク層および着色層と、それらを覆う光学干渉層が設けら
れており、サーモクロミック層は加温または冷却によっ
て変色するサーモクロミックインキで構成されていて、
さらに非加温時または非冷却時においてはサーモクロミ
ック層と着色層のそれぞれが判別不可能な状態になって
いることを特徴とする偽造防止印刷物。1. A thermochromic layer and a colored layer, and an optical interference layer covering them are provided on at least one surface of a substrate, and the thermochromic layer is composed of a thermochromic ink that changes color by heating or cooling. hand,
Further, the anti-counterfeit printed material is characterized in that the thermochromic layer and the colored layer are indistinguishable when not heated or cooled.
ミック層が形作るパターンとは逆版の関係になるパター
ン状の着色層が毛抜き合わせで設けられ、さらにサーモ
クロミック層はある温度以上になると消色するサーモク
ロミックインキで、着色層は消色前のサーモクロミック
インキと同色のインキでそれぞれ構成されており、さら
にそれらを覆うように光学干渉層が設けられていること
を特徴とする請求項１に記載の偽造防止印刷物。2. A thermochromic layer and a colored layer having a pattern which is in an inverse relationship to the pattern formed by the thermochromic layer are provided by combing the hairs, and the thermochromic layer is decolorized at a temperature higher than a certain temperature. 2. The chromic ink, wherein the colored layer is composed of the same color as the thermochromic ink before decoloring, and the optical interference layer is provided so as to cover them. Anti-counterfeit printed matter.
ク層とパターン状の着色層がこの順序で設けられ、さら
にそれらを覆うように光学干渉層が設けられていること
を特徴とする請求項１に記載の偽造防止印刷物。3. A thermochromic layer and a patterned coloring layer are provided in this order on at least one surface of the substrate, and an optical interference layer is provided so as to cover them. Anti-counterfeit printed matter described in.
色層とサーモクロミック層がこの順序で設けられ、さら
にそれらを覆うように光学干渉層が設けられていること
を特徴とする請求項１に記載の偽造防止印刷物。4. A patterned colored layer and a thermochromic layer are provided in this order on at least one side of a substrate, and an optical interference layer is provided so as to cover them. Anti-counterfeit printed matter described in.
からなることを特徴とする請求項１ないし請求項４のい
ずれか１項に記載の偽造防止印刷物。5. The anti-counterfeit printed matter according to any one of claims 1 to 4, wherein the optical interference layer is made of an ink containing a pearl pigment.
有するインキからなることを特徴とする請求項１ないし
請求項４のいずれか１項に記載の偽造防止印刷物。6. The anti-counterfeit printed matter according to any one of claims 1 to 4, wherein the optical interference layer is made of an ink containing a cholesteric liquid crystal pigment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001350240A JP3969063B2 (en) | 2001-11-15 | 2001-11-15 | Anti-counterfeit printed matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001350240A JP3969063B2 (en) | 2001-11-15 | 2001-11-15 | Anti-counterfeit printed matter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003145965A true JP2003145965A (en) | 2003-05-21 |
| JP3969063B2 JP3969063B2 (en) | 2007-08-29 |
Family
ID=19162780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001350240A Expired - Fee Related JP3969063B2 (en) | 2001-11-15 | 2001-11-15 | Anti-counterfeit printed matter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3969063B2 (en) |
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