JP4952159B2 - Machine-readable printed information and method for manufacturing the same - Google Patents

Machine-readable printed information and method for manufacturing the same Download PDF

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JP4952159B2
JP4952159B2 JP2006250703A JP2006250703A JP4952159B2 JP 4952159 B2 JP4952159 B2 JP 4952159B2 JP 2006250703 A JP2006250703 A JP 2006250703A JP 2006250703 A JP2006250703 A JP 2006250703A JP 4952159 B2 JP4952159 B2 JP 4952159B2
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智 牛腸
佳奈子 関
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Toppan Inc
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本発明は、所定の情報が目視で判別不可能な状態で設けられているが、設けられているその情報は近赤外線波長領域の波長の光の照射の下で機械読み取りができるようにした、機械読み取り可能な情報印刷物である。   In the present invention, predetermined information is provided in a state that cannot be visually discerned, but the provided information can be machine-read under irradiation of light having a wavelength in the near infrared wavelength region. It is a machine-readable printed information.

従来より株券、債券、小切手、商品券、宝くじ、定期券等の有価証券類には、機械読み取り可能な情報として、バーコードやOCR文字等の機械読み取り可能なコードマークが付されていることが多い。通常、このようなコードマークは、近赤外線波長領域の波長の光を吸収するインキ、カーボンブラック等を含む黒色インキを用いて形成されている。   Traditionally, securities such as stock certificates, bonds, checks, gift certificates, lotteries, commuter passes, etc. have been given machine-readable code marks such as barcodes and OCR characters as machine-readable information. Many. Usually, such a code mark is formed using black ink including ink that absorbs light having a wavelength in the near infrared wavelength region, carbon black, and the like.

より具体的には、白色インキの赤外線反射特性および黒色インキの赤外線吸収特性を利用し、機械的に読み取り可能な情報として、黒色インキからなるバーコード状のコードマークを白色インキからなる白色インキ層上に形成しておき、コードマークの部分に赤外線を照射しつつ、そこからの反射光を測定することにより、目視不可能な状態で記録されている情報を読み取れるようにしている。このような構成の不可視情報においては、一般的には、上記黒色インキ等からなる情報が不正に読み取られないように、可視光を遮断し、赤外線を透過する隠ぺい層で情報の部分を覆っておき、可視光照射下での目視による情報内容の判別ができないようにしている。   More specifically, a white ink layer made of white ink with a barcode-like code mark made of black ink as mechanically readable information using the infrared reflection characteristics of white ink and the infrared absorption characteristics of black ink. It is formed above, and the information recorded in an invisible state can be read by irradiating the code mark portion with infrared rays and measuring the reflected light therefrom. In the invisible information having such a configuration, in general, in order to prevent unauthorized reading of the information made of the black ink or the like, the information portion is covered with a concealing layer that blocks visible light and transmits infrared rays. In addition, the information contents cannot be discriminated by visual observation under irradiation with visible light.

しかし、上記した近赤外線を吸収する黒色インキ等は可視光波長領域においても光吸収性を有しているため、上記したような隠ぺい層を形成しておいても、隠ぺい力が不十分であると下部に位置する情報は赤外線読み取り装置により読み取られてしまうと共に、肉眼でもその存在が判読され易く、依然として複写等を利用した偽造や変造等を確実に防止する手段としては不十分であった。   However, the black ink or the like that absorbs near infrared rays has light absorptivity even in the visible light wavelength region, so that the hiding power is insufficient even if the hiding layer as described above is formed. The information located in the lower part is read by an infrared reader, and its presence is easily readable by the naked eye, and it is still insufficient as a means for reliably preventing counterfeiting or alteration using copying or the like.

目視不可能な状態で隠ぺいされている情報の存在がより確実に認識されないようにしようとする手段の一つとしては、可視光波長領域の波長の光の吸収が少なく、しかも可視光波長領域以外の波長の光を吸収する材料で情報を形成することも考えられてきた。例えば、赤外線吸収材料としての熱線吸収ガラスや赤外線吸収ガラスを粉砕し、これを顔料化したものをインキ中に含有させた赤外線吸収性インキによりコードマークを形成する手段がある。この赤外線吸収性インキは可視光波長領域の波長の光の吸収が少ないため、目視による存在の確認が難しいことから、偽造・変造・改ざん等に有効な手段として考えられてきた。   One way to ensure that the presence of information hidden in an invisible state is not recognized more reliably is that it absorbs less light in the visible wavelength range and is not in the visible wavelength range. It has also been considered to form information with a material that absorbs light having a wavelength of. For example, there is a means for forming a code mark with an infrared absorbing ink in which heat ray absorbing glass or infrared absorbing glass as an infrared absorbing material is pulverized and pigmented to contain the pigment. This infrared absorptive ink has been considered as an effective means for counterfeiting, alteration, tampering and the like because it hardly absorbs light having a wavelength in the visible light wavelength region, and thus it is difficult to confirm the presence by visual observation.

しかしながら、上記可視光波長領域の波長の光の吸収が少なく、かつ近赤外線波長領域の波長の光を吸収する記録材料を用いてコードマークを形成した場合、そのコードマークの情報内容を目視で判別することは難いが、コードマークの存在を確認する程度のことはできてしまうことがある。そのため、コードマークをより確かに隠蔽しようとするためには、コードマークの上に赤外線の吸収がない顔料によって迷彩模様を設けるか、比較的濃度の濃い顔料によって隠蔽する必要があった。しかし、このような方法によると、迷彩模様等の隠ぺい部分の上に設ける絵柄印刷層の形成に制限が生じ、情報印刷物としての利用範囲や絵柄のデザイン等が制約を受けるようになっていた。   However, when a code mark is formed using a recording material that absorbs light in the visible light wavelength region and absorbs light in the near infrared wavelength region, the information content of the code mark is visually determined. Although it is difficult to do, it may be possible to confirm the presence of a code mark. Therefore, in order to conceal the code mark more reliably, it is necessary to provide a camouflage pattern on the code mark with a pigment that does not absorb infrared rays, or to conceal it with a pigment having a relatively high density. However, according to such a method, the formation of the pattern printing layer provided on the concealed portion such as the camouflage pattern is restricted, and the range of use as an information printed matter and the design of the pattern are restricted.

また、上記記録材料を用いて所定の情報を形成してなる情報印刷物にあっては、隠ぺい情報の抽出とその抽出情報の読み取りを同じ近赤外線を用いて行い、簡便に情報内容の検証が行えるという利点がある反面、情報内容が判読され易いという欠点も有している。す
なわち、隠ぺい情報の抽出も抽出情報の読み取りも同じ近赤外線を使用して行っているため、第三者に情報内容の不正な読み出しが比較的容易に行われてしまうことが危惧されている。このような構成の情報印刷物は、例えば近赤外線と赤外線カメラを使用して情報内容が比較的簡便に読み取られてしまうため、その読み取り内容に基づいて偽造が行われたり、その読み取り結果に基づいて情報部分に手を加え、改ざんが行われてしまうこともありえる。
In addition, in the information printed matter formed by forming predetermined information using the recording material, the hidden information is extracted and the extracted information is read using the same near infrared ray, so that the information content can be easily verified. On the other hand, there is a disadvantage that the information content is easy to read. That is, since extraction of concealment information and reading of extraction information are performed using the same near infrared rays, there is a concern that unauthorized reading of information contents may be performed relatively easily by a third party. In the information printed matter having such a configuration, for example, the information content is read relatively easily using a near infrared ray and an infrared camera, and therefore, forgery is performed based on the read content, or based on the read result. The information part may be tampered with and altered.

情報内容の赤外線を利用した機械読み取り方法の別の手段として、特許文献1、2に記載の近赤外励起赤外発光の蛍光材料を利用する方法がある。この赤外蛍光材料は、近赤外線波長領域の波長の光を励起光とし、その励起光の照射により励起光の波長よりも長い波長、すなわち赤外線波長領域の波長の光を発光する特徴を持っている。従って、この赤外蛍光材料によって機械読み取り可能なコードマークを印刷し、その部分に近赤外線を照射することにより赤外線波長領域の波長の光を発光させ、その発光状態を赤外線カメラ等を利用して機械読み取りすることにより情報の検証ができるようになる。
特許1062551号明細書 特許1040095号明細書 しかしながら、上記赤外蛍光材料によりコードマークを印刷した場合においても、情報内容の目視による判別は困難ではあるが、コードマークの存在を確認する程度のことはできてしまう可能性がある。そのため、コードマークをより確実に隠ぺいするためには、前述と同様に、コードマークの上に赤外線の吸収が無い顔料により迷彩模様を設けるか、比較的濃度の濃い顔料により隠ぺいする必要があるが、このよう場合、迷彩模様上に形成する絵柄等の画像の付与が制限を受けてしまうという問題があった。さらに、上記赤外蛍光材料は無機系の顔料であるのでその粒子径を細かくしすぎると発光光の輝度が弱くなって機械読み取りが困難になってしまうため、ある程度の粒子径を確保しておく必要がある。しかし、赤外蛍光材料の粒子径が大きくなると、それを含有するコードマークの部分においては、その周辺部分と較べると、若干の光沢差や凹凸の違いが出てしまい、比較的困難であるにせよコードマークが読み取られてしまうことがある。
As another means of the machine reading method using infrared of information content, there is a method using a near-infrared excited infrared emission fluorescent material described in Patent Documents 1 and 2. This infrared fluorescent material has a feature that uses light having a wavelength in the near infrared wavelength region as excitation light, and emits light having a wavelength longer than that of the excitation light by irradiation of the excitation light, that is, light in the infrared wavelength region. Yes. Therefore, a machine-readable code mark is printed with this infrared fluorescent material, and the light of the wavelength in the infrared wavelength region is emitted by irradiating the part with near infrared rays. Information can be verified by machine reading.
Japanese Patent No. 1062551 However, even when a code mark is printed with the above infrared fluorescent material, it is difficult to visually discriminate information content, but it may be possible to confirm the presence of the code mark. There is. Therefore, in order to conceal the code mark more reliably, it is necessary to provide a camouflage pattern with a pigment that does not absorb infrared rays on the code mark, or to conceal with a pigment having a relatively high density, as described above. In such a case, there is a problem that the application of an image such as a pattern formed on the camouflage pattern is restricted. Furthermore, since the infrared fluorescent material is an inorganic pigment, if the particle size is too fine, the luminance of the emitted light becomes weak and machine reading becomes difficult, so a certain particle size is ensured. There is a need. However, when the particle size of the infrared fluorescent material is increased, the portion of the code mark containing it has a slight difference in gloss and unevenness compared to its peripheral portion, which is relatively difficult. In some cases, code marks may be read.

本発明は、上記のような問題点に着目してなされたものであり、所定の情報内容を有する情報部の存在が目視では確認できないようになっていると共に、この情報部に係る情報内容の抽出は近赤外線の照射で行い、抽出情報に係る赤外線情報の読み取りは機械により行うようにした、機械読み取り可能な情報印刷物である。   The present invention has been made paying attention to the problems as described above, and the existence of an information part having a predetermined information content cannot be visually confirmed. Extraction is performed by near-infrared irradiation, and infrared information related to the extracted information is read by a machine.

上記課題を達成するためになされ、請求項1に記載の発明は、基材の上に、近赤外線波長領域の波長の光の照射により励起されて前記波長よりも長波長側の波長の光を発光する近赤外励起赤外発光の赤外蛍光インキから構成される情報部と、この情報部の周辺部に毛抜き合わせで設けられていて、情報部と同様の色相を有する迷彩用インキから構成される情報迷彩部とが目視で判別不可能な状態で設けられていると共に、これらの情報部と情報迷彩部を少なくとも覆うように透明性被覆層と隠ぺい層と絵柄印刷層とが順次設けられており、前記隠ぺい層が白色インキで構成されていることを特徴とする、機械読み取り可能な情報印刷物である。 In order to achieve the above-mentioned object, the invention according to claim 1 is directed to irradiate light having a wavelength longer than the above-mentioned wavelength by being excited by irradiation with light having a wavelength in the near-infrared wavelength region on a substrate. An information part composed of infrared fluorescent ink that emits near-infrared excitation infrared light, and a camouflage ink that is provided in the peripheral part of this information part by hair removal and has the same hue as the information part The information camouflage portion is provided in a state that cannot be visually discerned, and a transparent covering layer, a concealing layer, and a pattern printing layer are sequentially provided so as to cover at least the information portion and the information camouflage portion. A machine-readable printed information product, wherein the concealing layer is made of white ink.

また、請求項2記載の発明は、前記透明性被覆層は半透明であることを特徴とする請求項1記載の機械読み取り可能な情報印刷物である
The invention according to claim 2 is the machine-readable information printed matter according to claim 1 , wherein the transparent coating layer is translucent .

さらにまた、請求項3記載の発明は、少なくとも、以下の工程を含んだことを特徴とする機械読み取り可能な情報印刷物の製造方法である。(a)基材上に赤外蛍光インキを用いオフセット印刷法により情報部を印刷する工程。(b)色相が赤外蛍光インキと可視光照射下で同色の迷彩用インキを用い、上記情報部を印刷した印刷版とは逆版となる印刷版を用い、オフセット印刷法により、前記情報部と毛抜き合わせでその周辺部に情報迷彩部を印刷する工程。(c)前記情報迷彩部上に、透明インキを用い、透明性被膜層をフレキソコーターにて設ける工程。(d)前記透明性被膜層上に、前記透明性被膜層の全面を覆うように、白色インキを用いオフセット印刷法により隠ぺい層を印刷する工程。(e)前記隠ぺい層上にプロセスインキにてオフセット印刷法により絵柄印刷層を設ける工程Furthermore, the invention described in claim 3 is a method for producing a machine-readable information printed matter characterized by including at least the following steps. (A) The process of printing an information part on a base material by the offset printing method using infrared fluorescent ink. (B) The information portion is printed by an offset printing method using a printing plate having a hue opposite to that of an infrared fluorescent ink and a camouflage ink of the same color under irradiation with visible light and using the printing plate printed with the information portion. The process of printing the information camouflage part on the peripheral part by tweezing. (C) A step of providing a transparent coating layer on the information camouflage portion with a flexo coater using a transparent ink. (D) A step of printing a concealing layer on the transparent coating layer by using an offset printing method using white ink so as to cover the entire surface of the transparent coating layer. (E) A step of providing a picture print layer on the concealment layer by an offset printing method using process ink .

本発明の機械読み取り可能な情報印刷物は、近赤外励起赤外発光の蛍光インキ(以下、赤外蛍光インキという。)を用いて情報部が設けられ、その周辺部分には毛抜き合わせで、赤外蛍光インキと同様な色相に設定された迷彩用インキを用いて情報迷彩部が設けられている構成であると共に、それらの上には透明性被覆層と隠ぺい層と絵柄印刷層とが設けられた構成であるため、特に情報部と情報迷彩部との光沢差や凹凸の微妙な違いをなくすことができるため、目視では赤外蛍光インキからなる情報部の存在に気づくことがない。また、隠ぺい情報の検証に当たっては、情報内容の抽出は近赤外線波長領域の波長の光の照射により行い、抽出情報の読み取りは近赤外線波長領域よりも長波長側の波長の光を利用して行うようにしたため、第三者が情報内容の不正読み取りを簡便に行うことが難しくなる。さらに、隠ぺい層を白色インキからなる薄膜層とすることにより、その上に設けられる絵柄印刷層の形成が制約を受け難くなるため、様々な形態の情報を任意に付与することが可能となる。   The machine-readable information printed matter of the present invention is provided with an information portion using near infrared excitation infrared emission fluorescent ink (hereinafter referred to as infrared fluorescence ink), and the peripheral portion thereof is trimmed and reddish. The information camouflage portion is provided using camouflage ink set to the same hue as the outer fluorescent ink, and a transparent coating layer, a concealing layer, and a pattern printing layer are provided on them. Therefore, the difference in gloss and unevenness between the information portion and the information camouflage portion can be eliminated, so that the presence of the information portion made of infrared fluorescent ink is not noticed visually. In verification of concealment information, information content is extracted by irradiating light with a wavelength in the near-infrared wavelength region, and extraction information is read using light having a wavelength longer than the near-infrared wavelength region. As a result, it becomes difficult for a third party to easily perform illegal reading of information contents. Furthermore, by forming the concealment layer as a thin film layer made of white ink, formation of the pattern printing layer provided thereon is less likely to be restricted, so that various forms of information can be arbitrarily given.

以下、図面を用いて本発明の実施の形態を詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図1は、本発明の機械読み取り可能な情報印刷物の平面部分における概略の構成を示す説明図で、図2は図1に係る機械読み取り可能な情報印刷物に近赤外線を照射した時に機械読み取りされた読み取り情報の概略を示す説明図で、さらに、図3は図1に係る機械読み取り可能な情報印刷物のX−X線における断面部分の概略の構成を示す説明図である。   FIG. 1 is an explanatory diagram showing a schematic configuration of a plane portion of a machine-readable information print according to the present invention, and FIG. 2 is machine-read when the machine-readable information print according to FIG. 1 is irradiated with near infrared rays. FIG. 3 is an explanatory diagram showing an outline of read information, and FIG. 3 is an explanatory diagram showing a schematic configuration of a cross-sectional portion taken along line XX of the machine-readable information print according to FIG.

図3にも示すように、本発明の機械読み取り可能な情報印刷物1は、基本的には、基材11の一方の面上に、近赤外線波長領域の波長の光の照射により励起されることによって近赤外線波長領域よりも長波長側の波長の光を発光する赤外蛍光インキから構成される情報部13と、この情報部13の周辺部に毛抜き合わせで設けられていて、上記赤外蛍光インキと同様の色相を有する迷彩用インキから構成される情報迷彩部12とが設けられ、両者が目視で判別不可能となっていると共に、これらの情報部13と情報迷彩部12を少なくとも覆うように透明性被覆層14と隠ぺい層15と絵柄印刷層16とが順次設けられてなるものである。17は基材11の他方の面上に設けられている絵柄印刷層を示している。   As shown in FIG. 3, the machine-readable printed matter 1 of the present invention is basically excited on one surface of the substrate 11 by irradiation with light having a wavelength in the near infrared wavelength region. Is provided with an information portion 13 composed of infrared fluorescent ink that emits light having a wavelength longer than the near-infrared wavelength region, and the peripheral portion of the information portion 13 is provided by hair removal. An information camouflage portion 12 composed of camouflage ink having the same hue as that of the ink is provided, both of which cannot be visually discriminated, and at least cover the information portion 13 and the information camouflage portion 12. Further, a transparent coating layer 14, a concealing layer 15, and a pattern printing layer 16 are sequentially provided. Reference numeral 17 denotes a pattern printing layer provided on the other surface of the substrate 11.

情報部13と情報迷彩部12とは、紙、合成紙、プラスチックシート等からなる基材11の上に、上述のような構成で設けられていて、目視では両者の区別が可視光照射下ではできず、情報部13に係る情報内容が分からないようになっている。   The information unit 13 and the information camouflage unit 12 are provided on the base material 11 made of paper, synthetic paper, plastic sheet, or the like as described above. The information content related to the information unit 13 cannot be understood.

すなわち、赤外蛍光インキからなる情報部13と、この赤外蛍光インキと可視光照射下では同一の色相に認識されるようになっている迷彩用インキからなる情報迷彩部12とは、同じような色相で、かつ両者を完全な毛抜き合わせで形成することにより、情報部13を目視不可能な状態で隠ぺいするようにしている。しかし、実際には、これらの形成に当たっては、多少の色ズレ、光沢感の違い、印刷見当のズレ等が発生してしまい、情報部と情報迷彩部とが区別されて認識できるようになってしまい、情報部に係る情報内容が分かってしまうことになる。それに対して本発明の情報印刷物は、上述したように、透明性被覆層14および隠ぺい層15でこれらの情報部13と情報迷彩部12の部分を少なくとも覆うことにより、情報部13と情報迷彩部12との間に、多少の色ズレ、光沢感の違い、凹凸の違い、印刷見当のズレ等があったとしてもこれらを隠ぺいして情報部13に係る隠ぺい情報を視認出来ないようにしている。特に透明性被覆層14上に隠ぺい層15を設ける構成は、赤外蛍光インキからなる情報部13と迷彩インキよりなる迷彩情報部12の上に直接隠ぺい層を設ける構成のものと較べるとその隠ぺい性が一層高くなるため有効である。   That is, the information part 13 made of infrared fluorescent ink and the information camouflage part 12 made of camouflage ink that are recognized in the same hue under irradiation with visible light and infrared fluorescent ink are the same. The information part 13 is concealed in a state in which it cannot be visually observed by forming both of them with a perfect hue and by completely removing the hair. However, in actuality, some color misalignment, gloss difference, misregistration of printing registration, etc. occur in these formations, and the information part and the information camouflage part can be distinguished and recognized. As a result, the information content related to the information section is known. On the other hand, the information printed matter of the present invention covers the information portion 13 and the information camouflage portion by covering at least the information portion 13 and the information camouflage portion 12 with the transparent covering layer 14 and the hiding layer 15 as described above. 12, even if there is a slight color misalignment, a difference in glossiness, a difference in unevenness, a misregistration in printing, etc., these are concealed so that the concealment information related to the information section 13 cannot be visually recognized. . In particular, the configuration in which the concealment layer 15 is provided on the transparent coating layer 14 is compared with the configuration in which the concealment layer is provided directly on the information portion 13 made of infrared fluorescent ink and the camouflage information portion 12 made of camouflage ink. This is effective because the property is further enhanced.

透明性隠ぺい層14は、主として情報部13とこの周辺に設けられている情報迷彩部12の部分における光沢感の違いおよび凹凸の違いを隠ぺいするために透明性の被覆材料で設けるものである。従って、その形成に当たっては、形成面が平滑になるような印刷方式であるグラビアコート法もしくはフレキソコート法等を採用することが好ましい。さらに色相の微妙なズレを補正するためにその上層に隠ぺい層15を設けるが、透明性被覆層14の膜厚が厚いほど色相のズレを隠ぺいする力が増すことになるので、出来るだけ厚く設けることが好ましい。   The transparent concealment layer 14 is provided with a transparent coating material in order to conceal the difference in glossiness and unevenness mainly in the information portion 13 and the information camouflage portion 12 provided around the information portion 13. Therefore, for the formation thereof, it is preferable to employ a gravure coating method or a flexo coating method which is a printing method in which the formation surface becomes smooth. Further, a concealment layer 15 is provided on the upper layer in order to correct subtle deviations in hue. However, as the film thickness of the transparent coating layer 14 increases, the force to conceal the hue deviation increases, so it is provided as thick as possible. It is preferable.

また、隠ぺい層15を白色インキにて形成することで、その上の絵柄印刷層16が何らの制限を受けることなく形成できるようになる。白色インキの白色系の顔料としては、一般に使用されている炭酸カルシウムや酸化チタン等を使用することができる。   Further, by forming the concealment layer 15 with white ink, the pattern printing layer 16 thereon can be formed without any limitation. As the white pigment of the white ink, commonly used calcium carbonate, titanium oxide, or the like can be used.

このような構成の機械読み取り可能な情報印刷物に近赤外線を照射した時に機械読み取りされる読み取り情報の概略を示しているのが図2である。すなわち、情報部13を構成する赤外蛍光インキの励起光を赤外線LEDから照射し、赤外線を発光させ、赤外蛍光インキの発光波長未満の波長の光をカットするフィルターを通して見た場合や、赤外線カメラで撮影したときには図2のような状態で観察される。この際、図にも示すように、赤外蛍光インキで形成されている情報部13の部分は発光により比較的白く認識され、その情報部13を印刷するときに使用した印刷版とは逆版となる印刷版を用い、迷彩用インキにより毛抜き合わせで印刷してなる情報迷彩部12の部分は発光していないために比較的黒く認識される。このコントラストを2値化した場合、図2のように見え、バーコード等のコードマークを機械検知することができるのである。   FIG. 2 shows an outline of read information that is machine-read when near-infrared rays are irradiated on the machine-readable information print having such a configuration. That is, when the infrared fluorescent ink constituting the information unit 13 is irradiated with excitation light from an infrared LED, the infrared light is emitted, and the infrared light is viewed through a filter that cuts light having a wavelength shorter than the emission wavelength of the infrared fluorescent ink, When photographed with a camera, the image is observed as shown in FIG. At this time, as shown in the figure, the portion of the information portion 13 formed of infrared fluorescent ink is recognized to be relatively white by light emission, and is reverse to the printing plate used when printing the information portion 13. The portion of the information camouflage portion 12 that is printed by using the printing plate to be printed by hair removal with camouflage ink is recognized as being relatively black because it does not emit light. When this contrast is binarized, it looks like FIG. 2, and a code mark such as a barcode can be mechanically detected.

以下、本発明を、具体的な実施例を挙げて詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to specific examples.

白色系のコート紙からなる基材の上に下記組成の赤外蛍光インキ(UV硬化型オフセットインキ)を用いオフセット印刷法によりバーコード(情報部)を印刷した。続いて、色相が赤外蛍光インキと可視光照射下で同色に感じられる下記組成の迷彩用インキ(UV硬化型オフセットインキ)を用い、上記バーコードを印刷した印刷版とは逆版となる印刷版を用い、オフセット印刷法により、バーコードと毛抜き合わせでその周辺部に情報迷彩部を印刷した。次に、情報迷彩部の上には、下記組成の透明インキ(UV硬化型フレキソインキ)を用い、基材と同じ面積にて3μm厚の透明性被膜層をフレキソコーターにて設けた。さらにその上層にはその全面をさらに覆うように、下記白色インキ(UV硬化型オフセットインキ)を用いオフセット印刷法により隠ぺい層を印刷した。そして最後に、隠ぺい層の上層に下記プロセスインキ(UV硬化型オフセットインキ)にてオフセット印刷法により絵柄印刷層を設けた後、得られた大判の印刷物を所定の大きさに切って、本発明の実施例1に係る機械読み取り可能な情報印刷物を作製した。   A barcode (information part) was printed on a base material made of white coated paper by an offset printing method using an infrared fluorescent ink (UV curable offset ink) having the following composition. Subsequently, printing using a camouflage ink (UV curable offset ink) having the following composition that can be felt in the same color as the infrared fluorescent ink when irradiated with visible light, is a printing plate that is the reverse of the printing plate on which the barcode is printed. An information camouflage portion was printed on the periphery of the plate by bar code and tweezers using an offset printing method. Next, on the information camouflage portion, a transparent ink (UV curable flexo ink) having the following composition was used, and a 3 μm thick transparent coating layer was provided with a flexo coater in the same area as the substrate. Further, a concealing layer was printed on the upper layer by the offset printing method using the following white ink (UV curable offset ink) so as to further cover the entire surface. And finally, after providing a pattern printing layer by the offset printing method with the following process ink (UV curable offset ink) on the upper layer of the concealing layer, the large-sized printed matter obtained was cut into a predetermined size, and the present invention A machine-readable printed information product according to Example 1 was prepared.

[赤外蛍光インキの組成]
蛍光顔料 IRS−F (根本特殊化学(株)社製) 10重量部
FDSメジウムTPロ (東洋インキ製造(株)社製) 90重量部
[迷彩用インキの組成]
FD OL 黄 TC ロ (東洋インキ製造(株)社製) 2重量部
FD OL 紅 TC ロ (東洋インキ製造(株)社製) 2重量部
FD OL 藍 TC ロ (東洋インキ製造(株)社製) 2重量部
FDSメジウムTPロ (東洋インキ製造(株)社製) 95重量部
[透明インキ]
UVコートニスSHL ((株)T&KTOKA社製)
[白色インキ]
UV161スーパーホワイト((株)T&KTOKA社製)
[プロセスインキ]
FD OL 黄 TC ロ (東洋インキ製造(株)社製)
FD OL 紅 TC ロ (東洋インキ製造(株)社製)
FD OL 藍 TC ロ (東洋インキ製造(株)社製)。
[Composition of infrared fluorescent ink]
Fluorescent pigment IRS-F (manufactured by Nemoto Special Chemical Co., Ltd.) 10 parts by weight FDS medium TP (manufactured by Toyo Ink Co., Ltd.) 90 parts by weight [Composition of camouflage ink]
FD OL Yellow TC (made by Toyo Ink Manufacturing Co., Ltd.) 2 parts by weight FD OL Red TC (made by Toyo Ink Manufacturing Co., Ltd.) 2 parts by weight FD OL Indigo TC (made by Toyo Ink Manufacturing Co., Ltd.) ) 2 parts by weight FDS medium TP® (manufactured by Toyo Ink Manufacturing Co., Ltd.) 95 parts by weight [transparent ink]
UV coat varnish SHL (manufactured by T & KTOKA)
[White ink]
UV161 Super White (manufactured by T & KTOKA)
[Process ink]
FD OL Yellow TC (Toyo Ink Manufacturing Co., Ltd.)
FD OL Crimson TC (Toyo Ink Manufacturing Co., Ltd.)
FD OL Indigo TC (Toyo Ink Manufacturing Co., Ltd.).

上記した機械読み取り可能な情報印刷物は、目視による観察では、バーコードが印刷されていることが全くわからなかった。しかし、この情報印刷物に対して800nmの波長の近辺にシャープな発光特性を持つLEDを用いて近赤外線を照射することによって得られる発光光を950nm前後に透過特性のあるバンドパスフィルターを通して赤外線カメラで撮影したところ、バーコードの部分が白く撮影され、そのほかの部分は黒く撮影され、この撮影画像からバーコード、すなわち所定の情報が読み取ることができた。   The above-mentioned machine-readable information printed material was not observed at all by visual observation. However, the emitted light obtained by irradiating near infrared rays using an LED having a sharp emission characteristic in the vicinity of a wavelength of 800 nm with respect to this information printed matter is passed through a bandpass filter having a transmission characteristic around 950 nm by an infrared camera. When the image was taken, the barcode portion was photographed in white, and the other portions were photographed in black. The barcode, that is, predetermined information could be read from this photographed image.

本発明の機械読み取り可能な情報印刷物の平面部分における概略の構成を示す説明図である。It is explanatory drawing which shows the schematic structure in the plane part of the machine-readable information printed matter of this invention. 図1に係る機械読み取り可能な情報印刷物に近赤外線を照射した時に機械読み取りされた読み取り情報の概略を示す説明図である。It is explanatory drawing which shows the outline of the reading information machine-readable when near infrared rays are irradiated to the machine-readable information printed matter concerning FIG. 図1に係る機械読み取り可能な情報印刷物のX−X線における断面部分の概略の構成を示す説明図である。It is explanatory drawing which shows the structure of the outline of the cross-sectional part in the XX line of the machine-readable information printed matter which concerns on FIG.

符号の説明Explanation of symbols

1 機械読み取り可能な情報印刷物
11 基材
12 情報迷彩部
13 情報部
14 透明性被覆層
15 隠ぺい層
16 絵柄印刷層
17 絵柄層
DESCRIPTION OF SYMBOLS 1 Machine-readable information printed matter 11 Base material 12 Information camouflage part 13 Information part 14 Transparency coating layer 15 Hiding layer 16 Picture printing layer 17 Picture layer

Claims (3)

基材の上に、近赤外線波長領域の波長の光の照射により励起されて前記波長よりも長波長側の波長の光を発光する近赤外励起赤外発光の赤外蛍光インキから構成される情報部と、この情報部の周辺部に毛抜き合わせで設けられていて、情報部と同様の色相を有する迷彩用インキから構成される情報迷彩部とが目視で判別不可能な状態で設けられていると共に、これらの情報部と情報迷彩部を少なくとも覆うように透明性被覆層と隠ぺい層と絵柄印刷層とが順次設けられており、前記隠ぺい層が白色インキで構成されていることを特徴とする、機械読み取り可能な情報印刷物。 It is composed of a near-infrared excitation infrared emission infrared fluorescent ink that is excited by irradiation with light having a wavelength in the near-infrared wavelength region and emits light having a wavelength longer than the above wavelength on the substrate. The information part and the information camouflage part that is provided in the peripheral part of the information part by hair removal and is composed of camouflage ink having the same hue as the information part are provided in a state that cannot be visually discriminated. And a transparent coating layer, a concealing layer, and a pattern printing layer are sequentially provided so as to cover at least the information part and the information camouflage part, and the concealing layer is made of white ink. Yes, machine-readable printed information. 前記透明性被覆層は半透明であることを特徴とする請求項1記載の機械読み取り可能な情報印刷物。   The machine-readable information printed matter according to claim 1, wherein the transparent coating layer is translucent. 少なくとも、以下の工程を含んだことを特徴とする機械読み取り可能な情報印刷物の製造方法。
(a)基材上に赤外蛍光インキを用いオフセット印刷法により情報部を印刷する工程。
(b)色相が赤外蛍光インキと可視光照射下で同色の迷彩用インキを用い、上記情報部を印刷した印刷版とは逆版となる印刷版を用い、オフセット印刷法により、前記情報部と毛抜き合わせでその周辺部に情報迷彩部を印刷する工程。
(c)前記情報迷彩部上に、透明インキを用い、透明性被膜層をフレキソコーターにて設ける工程。
(d)前記透明性被膜層上に、前記透明性被膜層の全面を覆うように、白色インキを用いオフセット印刷法により隠ぺい層を印刷する工程。
(e)前記隠ぺい層上にプロセスインキにてオフセット印刷法により絵柄印刷層を設ける工程。
A method for producing a machine-readable printed information product comprising at least the following steps.
(A) The process of printing an information part on a base material by the offset printing method using infrared fluorescent ink.
(B) The information portion is printed by an offset printing method using a printing plate having a hue opposite to that of an infrared fluorescent ink and a camouflage ink of the same color under irradiation with visible light and using the printing plate printed with the information portion. The process of printing the information camouflage part on the peripheral part by tweezing.
(C) A step of providing a transparent coating layer on the information camouflage portion with a flexo coater using a transparent ink.
(D) A step of printing a concealing layer on the transparent coating layer by using an offset printing method using white ink so as to cover the entire surface of the transparent coating layer.
(E) A step of providing a picture print layer on the concealment layer by an offset printing method using process ink.
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