JPH03114871A - Print and discriminating method thereof - Google Patents
Print and discriminating method thereofInfo
- Publication number
- JPH03114871A JPH03114871A JP25414789A JP25414789A JPH03114871A JP H03114871 A JPH03114871 A JP H03114871A JP 25414789 A JP25414789 A JP 25414789A JP 25414789 A JP25414789 A JP 25414789A JP H03114871 A JPH03114871 A JP H03114871A
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- region
- absorption
- printed
- mixing ratio
- 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
- 238000000034 method Methods 0.000 title claims description 11
- 238000010521 absorption reaction Methods 0.000 claims abstract description 23
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 238000007646 gravure printing Methods 0.000 claims description 4
- 238000007644 letterpress printing Methods 0.000 claims description 4
- 238000007645 offset printing Methods 0.000 claims description 4
- 238000007650 screen-printing Methods 0.000 claims description 4
- 239000000975 dye Substances 0.000 abstract description 12
- 238000007639 printing Methods 0.000 abstract description 8
- 239000003086 colorant Substances 0.000 abstract description 2
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 230000000007 visual effect Effects 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 40
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 20
- 229910052759 nickel Inorganic materials 0.000 description 10
- 239000000049 pigment Substances 0.000 description 7
- 238000000862 absorption spectrum Methods 0.000 description 4
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 3
- 238000000859 sublimation Methods 0.000 description 3
- 230000008022 sublimation Effects 0.000 description 3
- DZLFLBLQUQXARW-UHFFFAOYSA-N tetrabutylammonium Chemical compound CCCC[N+](CCCC)(CCCC)CCCC DZLFLBLQUQXARW-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 101500025412 Mus musculus Processed cyclic AMP-responsive element-binding protein 3-like protein 1 Proteins 0.000 description 1
- 229930192627 Naphthoquinone Natural products 0.000 description 1
- AOZMBMOAFWUDGX-UHFFFAOYSA-N S1SC(C=C1)C(=O)O.C=C Chemical compound S1SC(C=C1)C(=O)O.C=C AOZMBMOAFWUDGX-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000001000 anthraquinone dye Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- OIQPTROHQCGFEF-UHFFFAOYSA-L chembl1371409 Chemical compound [Na+].[Na+].OC1=CC=C2C=C(S([O-])(=O)=O)C=CC2=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 OIQPTROHQCGFEF-UHFFFAOYSA-L 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000001013 indophenol dye Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- LKKPNUDVOYAOBB-UHFFFAOYSA-N naphthalocyanine Chemical compound N1C(N=C2C3=CC4=CC=CC=C4C=C3C(N=C3C4=CC5=CC=CC=C5C=C4C(=N4)N3)=N2)=C(C=C2C(C=CC=C2)=C2)C2=C1N=C1C2=CC3=CC=CC=C3C=C2C4=N1 LKKPNUDVOYAOBB-UHFFFAOYSA-N 0.000 description 1
- 150000002791 naphthoquinones Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000001007 phthalocyanine dye Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、肉眼では識別できない印刷情報を有する印刷
物及びその識別方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to printed matter having printed information that cannot be discerned with the naked eye, and a method for identifying the same.
印刷インテリジェンスを有する基板からなる装置が発明
されている。この原理は、例えば、走査ヘッドが紙上を
移動する時の容量もしくは磁気リダクタンスの変化を利
用するものであり、磁気もしくは金属インキ等の特殊イ
ンキをこのような変化を与えるものとして使用すること
ができる。また、４色石版印刷により紙基板上に印刷を
行い、沈積された黒色インキの量を検出器の動作変数と
して使用することができる。すなわち、イエロー士シア
ン＋マゼンタの同時印刷から生じる黒色印刷部と、黒色
インキによる印刷から生じる黒色印刷部とを肉眼で識別
することはできない。従来のイエロー、シアン、マゼン
タインキは赤外線透過性であり、リドブラックインキ内
のカーボンブラックは赤外線吸収性が高いため、赤外線
反射／吸収検出器により赤外線反射紙上の上記２つの黒
色印刷を容易に識別することができる。このような識別
を行う装置として、先端から赤外線を放射するように設
計された赤外線発光器と、反射される赤外線放射強度に
応答するように設計された赤外検出器とを先端に組み込
んだ装置が市販されている。その装置における感知可能
表示として、例えばランプ又は明確な音色によって識別
することができるようになっている（特表昭５９−５０
０１４７号）。A device has been invented that consists of a substrate with printing intelligence. This principle uses, for example, changes in capacitance or magnetic reductance as the scanning head moves across the paper, and special inks such as magnetic or metallic inks can be used to provide such changes. . It is also possible to print on a paper substrate by four-color lithography and use the amount of black ink deposited as an operating variable for the detector. That is, it is impossible to distinguish with the naked eye a black printed portion resulting from simultaneous printing of yellow, cyan, and magenta, and a black printed portion resulting from printing with black ink. Conventional yellow, cyan, and magenta inks are infrared transparent, and the carbon black in Lidoblack ink has high infrared absorption, so an infrared reflection/absorption detector can easily distinguish the two black prints on infrared reflective paper. can do. A device for performing such identification includes an infrared emitter designed to emit infrared radiation from the tip and an infrared detector designed to respond to the intensity of reflected infrared radiation at the tip. is commercially available. As a perceptible indication in the device, for example, a lamp or a clear tone can be used to identify the device.
No. 0147).
上記したように、従来の４色石版印刷技術においては、
黒色としてイエロー、シアン、マゼンタインキの組み合
わせを使用し、実質的に黒インキを使用せずに印刷する
か、もしくは、色インキを少なくし、黒インキを多くす
ることにより印刷することができる。両者を使用して慎
重な制御を行うことにより、肉眼には同じ色に見えるが
、赤外波長に対しては非常に異なって見える印刷を行う
ことができる。すなわち、赤外線吸収によって識別され
る印刷部を、非赤外波長において識別不能なもう一つの
マークを存在させることにより、肉眼に対して圏すこと
ができる。その理由は、人間の目は典型的に＄よそ３８
０〜７５０ ｎｍの範囲の可視光応答性を有し、その尖
頭応答は５００〜６００ｎｍであり、半導体赤外線発光
器及び検出器は一般的に８００〜１１０００ｎの範囲の
尖頭スペクトル感度を有し、この波長において黒色石版
インキは吸収性を示し、他方、イエロー、シアン、マゼ
ンタインキからなる黒色は赤外線透過性であるためであ
る。As mentioned above, in conventional four-color lithographic printing technology,
Black can be printed by using a combination of yellow, cyan, and magenta inks, with virtually no black ink, or by using less color ink and more black ink. With careful control, both can be used to produce prints that appear the same color to the naked eye, but look very different to infrared wavelengths. That is, a printed portion that is identified by infrared absorption can be seen by the naked eye by providing another mark that cannot be identified at non-infrared wavelengths. The reason is that the human eye typically
It has visible light responsivity in the range 0-750 nm, with a peak response in the range 500-600 nm, and semiconductor infrared emitters and detectors typically have a peak spectral sensitivity in the range 800-11000 nm. This is because black lithographic ink exhibits absorption properties at this wavelength, while black colors consisting of yellow, cyan, and magenta inks are transparent to infrared rays.
赤外線識別装置としては、例えば、ペンを押圧すること
により可聴表示を行うようになっている。As an infrared identification device, for example, an audible display is provided by pressing a pen.
この場合の表示の仕方としては、可視又は可嗅表示でも
よい。In this case, the display may be a visible or olfactory display.
識別にふける低吸収率は、−船釣に印刷パッチ内の１５
％以下の割合の黒色インキに対応し、可聴表示では低音
を示し、中間吸収率は１５〜７０％間の割合に対応し、
可聴表示では中音を示し、高吸収率は７０％以上の割合
の黒色インキに対応し、可聴表示では高音を示す。Identification of low absorption - 15 in the printed patch on the fishing boat
%, the audible display shows a low tone, the intermediate absorption rate corresponds to a proportion between 15 and 70%,
The audible display indicates a medium tone, and the high absorption rate corresponds to a proportion of black ink of 70% or more, and the audible display indicates a high tone.
しかしながら、上記のような従来の技術では、黒色イン
キを使用しているため、用いるインキの色に制限が生じ
る。また、黒色インキの制御という操作が加わるため、
工程が複雑になるという欠点がある。However, since the conventional techniques described above use black ink, there are restrictions on the color of the ink that can be used. In addition, since the operation of controlling black ink is added,
The disadvantage is that the process is complicated.
したがって、本発明は、このような従来のものの問題点
を解決して、いずれの色の印刷部分においても、肉眼で
識別できない印刷を施すことが可能な印刷物及びその識
別方法を提供することを目的とする。Therefore, an object of the present invention is to solve the problems of the conventional products and provide a printed matter and a method for identifying the printed matter that can print in any color in a printed part that cannot be discerned with the naked eye. shall be.
そこで本発明においては、凸版印刷、オフセット印刷、
グラビア印刷、スクリーン印刷の各印刷工程に用いられ
ているイエロー、シアン、マゼンタのいずれか１色又は
それ以上の色のインキと同色あるいはそれに近い色又は
無色ないし白色の色素であって、近赤外もしくは赤外領
域に吸収を有する色素を、同色のインキに割合を異なら
せて（色素を加えない場合も含んで）混合し、混合割合
の異なる同色のインキを用いて印刷物を作製することに
より、通常肉眼では識別することのできない印刷情報を
赤外線反射又は吸収検出器で識別可能となるようにして
いる。Therefore, in the present invention, letterpress printing, offset printing,
A near-infrared pigment that is the same color as or close to the ink of one or more of yellow, cyan, and magenta used in each printing process of gravure printing and screen printing, or is colorless or white. Alternatively, by mixing pigments that absorb in the infrared region with inks of the same color in different proportions (including cases where no pigment is added), and producing printed matter using inks of the same color with different mixing proportions, Printed information that cannot normally be identified with the naked eye can be identified using an infrared reflection or absorption detector.
すなわち、本発明の印刷物は、印刷情報を持つ基板を有
し、その基板は肉眼に対して可視識別不能な特性を有す
る領域を保持し、前記領域は、視覚的に表面上同じであ
る近赤外もしくは赤外領域に吸収を有する色素を含まな
いか又は第１の混合割合で含む領域部分と、近赤外もし
くは赤外領域に吸収を有する色素を第２の混合割合で含
む領域部分との組み合わせからなることを特徴とするも
のである。That is, the printed matter of the present invention has a substrate with printed information, the substrate carries an area having a property that is not visually discernible to the naked eye, and said area has a near-red color that is visually superficially the same. A region that does not contain a dye that absorbs in the outer or infrared region or contains it in a first mixing ratio, and a region that contains a dye that absorbs in the near-infrared or infrared region in a second mixing ratio. It is characterized by being composed of a combination.
この場合、前記基板は、凸版印刷、オフセット印刷、グ
ラビア印刷、又はスクリーン印刷の何れか又はそれらの
組み合わせを使用して印刷されており、近赤外もしくは
赤外領域に吸収を有する色素を含まないか又は第１の混
合割合で含むインキで印刷された部分と近赤外もしくは
赤外領域に吸収を有する色素を第２の混合割合で含むイ
ンキで印刷された部分とを有するものであるのが最も典
型的である。In this case, the substrate is printed using letterpress printing, offset printing, gravure printing, or screen printing, or a combination thereof, and does not contain a dye that absorbs in the near-infrared or infrared region. or a part printed with an ink containing a first mixing ratio and a part printed with an ink containing a second mixing ratio of a dye absorbing in the near-infrared or infrared region. The most typical.
このような印刷物の識別方法としては、前記印刷物の近
赤外もしくは赤外領域の反射又は吸収を検出することに
より、視覚的に表面上同じである近赤外もしくは赤外領
域に吸収を有する色素を含まないか又は第１の混合割合
で含む領域部分と、近赤外もしくは赤外領域に吸収を有
する色素を第２の混合割合で含む領域部分とを識別する
ようにする。A method for identifying such printed matter is to detect the reflection or absorption in the near-infrared or infrared region of the printed material, and visually identify the same pigment that has absorption in the near-infrared or infrared region on the surface. A region that does not contain or contains a dye at a first mixing ratio and a region that contains a dye having absorption in the near-infrared or infrared region at a second mixing ratio are distinguished.
本発明の印刷物及びその識別方法に用いられるインキは
、通常の印刷インキに使用されているイエロー、シアン
、マゼンタインキに、次のような近赤外ないし赤外領域
に吸収を有する有機化合物を混合割合を調整して調合し
たインキである。すなわち、シニアン系色素、ナフトキ
ノン系色素、アントラキノン系色素、フタロシアニン系
色素、ナフタロシアニン系色素、インドフェノール系色
素、Ｎｉ−ジチオール錯体のいずれかである。The ink used in the printed matter and identification method of the present invention is a mixture of the yellow, cyan, and magenta inks used in ordinary printing inks with the following organic compounds that absorb in the near-infrared to infrared region. It is an ink prepared by adjusting the proportions. That is, it is any one of cyanide dyes, naphthoquinone dyes, anthraquinone dyes, phthalocyanine dyes, naphthalocyanine dyes, indophenol dyes, and Ni-dithiol complexes.
このような色素を含まないか又は第１の混合割合で含む
インキにより印刷された部分と、第２の混合割合で含む
インキにより印刷された部分とは、肉眼では識別するこ
とのできないように印刷されていても、近赤外もしくは
赤外領域の反射又は吸収が異なるので、この反射又は吸
収を検出することにより、識別することができる。The part printed with the ink that does not contain the pigment or contains it in the first mixing ratio and the part printed with the ink that contains the pigment in the second mixing ratio are printed in such a way that they cannot be distinguished with the naked eye. However, since the reflection or absorption in the near-infrared or infrared region is different, identification can be made by detecting this reflection or absorption.
以下、本発明の実施例を図面を参照しつつ説明する。 Embodiments of the present invention will be described below with reference to the drawings.
実施例１． 昇華転写用インク シアン（ＴＳＤ−４０
３，３８％、ＤＨ−Ｃ２１，１２％、ＫＳ−５７ニス
６４．００％、ＫＳ−１フエス２．５０％、ＫＴ−１１
２９，００％、ＭＰ８Ｆ０．０６％）１００重量部に対
して、テトラ−ｎ−ブチルアンモニウムビス（シス−１
，２−ジフェニル−１，２−エチレンジチオラート）ニ
ッケル錯体０．１重量部を含有させたインキとそうでな
いインキを調合し、紙基板上に並列して塗布した。同色
２種類のサンプルにＰＲＩＣＥ ＳＴ Ｅ ＲＮ
Ｓ Ｌ ＯＡ Ｎ ？ｆ製（Ｌｏｓ Ａｎｇｅｌｅｓ
）ｒＱｕｅｓｔｒｏｎ」を照射すると、負の表示（中音
、シアンのみ）と正の表示（高音、上記ニッケル錯体含
有）とに識別することができた。Example 1. Sublimation transfer ink cyan (TSD-40
3,38%, DH-C21,12%, KS-57 varnish
64.00%, KS-1 FES 2.50%, KT-11
29,00%, MP8F0.06%), tetra-n-butylammonium bis(cis-1
An ink containing 0.1 part by weight of a nickel complex (2-diphenyl-1,2-ethylenedithiolate) and an ink without the nickel complex were prepared and applied in parallel onto a paper substrate. PRICE ST E RN for two samples of the same color
SL OA N? Made by f (Los Angeles
)rQuestron'', it was possible to distinguish between negative display (medium tone, cyan only) and positive display (high tone, containing the above-mentioned nickel complex).
この識別方法は１例であり、具体的にはインキの反射あ
るいは吸収特性により判別する。すなわち、第１１！ｌ
に示したように、近赤外線又は赤外線吸収量の大小によ
り判別することができる。図において、点線は上記のシ
アンのみの吸収スペクトル特性を示し、破線は上記ニッ
ケル錯体を上記割合で混合した場合の吸収スペクトル特
性を示し、実線は混合割合を２倍にした場合の吸収スペ
クトル特性を示している。したがって、同じインキであ
って近赤外もしくは赤外領域に吸収を有する色素の含有
率が異なる複数のインキの間でも判別可能となる。This identification method is just one example, and specifically, discrimination is performed based on the reflection or absorption characteristics of the ink. In other words, the 11th! l
As shown in , it can be determined based on the amount of near-infrared or infrared absorption. In the figure, the dotted line shows the absorption spectrum of cyan alone, the broken line shows the absorption spectrum when the nickel complex is mixed at the above ratio, and the solid line shows the absorption spectrum when the mixing ratio is doubled. It shows. Therefore, it is possible to distinguish between a plurality of inks that are the same but have different content rates of pigments that absorb in the near-infrared or infrared region.
実施例２． 昇華転写用インク マゼンタ（ＭＳＲｅｄ
Ｇ ２．４１％、Ｍａｃｒｏｌｅｘ Ｒ。Example 2. Sublimation transfer ink magenta (MSRed
G 2.41%, Macrolex R.
Ｖ、Ｒ１，２９％、ＢＶ−５７０，４％、ＢＶ−１２，
７５％、ＫＴ−１１３３，１５％、ＭＰ８Ｆ ０．０
６％） １００重量部に対して、テトラ−ｎ−ブチルア
ンモニウムビス（シス−１゜２−ジフェニル−１，２−
エチレンジチオラート）ニッケル錯体０．１重量部を含
有させたインキとそうでないインキを調合し、紙基板上
に並列して塗布した。同色２種類のサンプルにＰＲＩＣ
Ｅ ５ＴＥＲＮ ５ＬＯＡＮ社製（Ｌｏｓ Ａｎ
ｇｅｌｅｓ）ｒＱｕｅｓｔｒｏｎ」を照射すると、低音
（マゼンタのみ）と中音（上記ニッケル錯体含有）とに
識別することができた。V, R1, 29%, BV-570, 4%, BV-12,
75%, KT-1133, 15%, MP8F 0.0
6%) per 100 parts by weight, tetra-n-butylammonium bis(cis-1°2-diphenyl-1,2-
An ink containing 0.1 part by weight of nickel (ethylene dithiolate) complex and an ink containing no nickel complex were prepared and applied in parallel onto a paper substrate. PRIC for two samples of the same color
E 5TERN 5LOAN (Los An
When irradiated with ``geles)rQuestron,'' it was possible to distinguish between low tones (magenta only) and medium tones (containing the nickel complex described above).
実施例３． 昇華転写用インキ イエロー（Ｆ。Example 3. Sublimation transfer ink yellow (F.
ｒｏｎ Ｂｒ１ｌｌｉａｎｔ Ｙｅｌｌｏｗ Ｓ
−６ＧＬ ２．７％、ＢＶ−５６６，０％、ＢＬ−３
２２，９１％、ＫＴ−１１１８，３９％）１００重量部
に対して、テトラ−ｎ−ブチルアンモニウムビス（シス
−１，２−ジフェニル−１，２−エチレンジチオラート
）ニッケル錯体０゜１重量部を含有させたインキとそう
でないインキを調合し、紙基板上に並列して塗布した。ron Br1lliant Yellow S
-6GL 2.7%, BV-566,0%, BL-3
0.1 part by weight of tetra-n-butylammonium bis(cis-1,2-diphenyl-1,2-ethylenedithiolate) nickel complex per 100 parts by weight (KT-1118, 39%) An ink that contained and an ink that did not were prepared and applied on a paper substrate in parallel.
同色２種類のサンプルにＰＲＩＣＥ ５ＴＥＲＮ
５ＬＯＡＮ社１ａ（Ｌｏｓ Ａｎｇｅｌｅｓ）ｒＱｕ
ｅＳｔｒＯｎＪを照射すると低音（イエローのみ）と中
音（上記ニッケル錯体含有）とに識別することができた
。PRICE 5TERN for two samples of the same color
5LOAN Company 1a (Los Angeles) rQu
When eStrOnJ was irradiated, it was possible to distinguish between low tones (yellow only) and medium tones (containing the nickel complex).
以上のように、本発明によれば、凸版、オフセット、グ
ラビア、スクリーンの各印刷工程に用いられているイエ
ロー、シアン、マゼンタの各インキにそれらと同色ある
いはそれに近い色の近赤外線あるいは赤外線吸収剤を少
量混合して用いて印刷物を作製することにより、黒色イ
ンキを使うことなしに、肉眼では識別することのできな
い印刷情報を赤外線反射又は吸収検出器で識別すること
が可能となり、偽造防止用、学習用、娯楽用（プレミア
ム用）印刷物として用いることができる。As described above, according to the present invention, a near-infrared or infrared absorbing agent of the same color or a color close to the yellow, cyan, and magenta inks used in letterpress, offset, gravure, and screen printing processes is added. By making printed matter by mixing a small amount of , it becomes possible to identify printed information that cannot be seen with the naked eye using an infrared reflection or absorption detector without using black ink. It can be used as educational and recreational (premium) printed matter.
第１図はシアン及びニッケル錯体含有シアンの吸収スペ
クトル特性を示す図である。
出 願 人 大日本印刷株式会社FIG. 1 is a diagram showing the absorption spectrum characteristics of cyanide and cyanide containing a nickel complex. Applicant: Dai Nippon Printing Co., Ltd.
Claims (3)
して可視識別不能な特性を有する領域を保持し、前記領
域は、視覚的に表面上同じである近赤外もしくは赤外領
域に吸収を有する色素を含まないか又は第１の混合割合
で含む領域部分と、近赤外もしくは赤外領域に吸収を有
する色素を第２の混合割合で含む領域部分との組み合わ
せからなることを特徴とする印刷物。(1) having a substrate having printed information, the substrate having a region having a property that is not visually discernible to the naked eye, said region being visually the same on the surface in the near-infrared or infrared region; A region that does not contain a dye that absorbs in the near-infrared region or contains a dye that absorbs in the infrared region at a first mixing ratio, and a region that contains a dye that absorbs in the near-infrared or infrared region at a second mixing ratio. Featured prints.
版印刷、オフセット印刷、グラビア印刷、又はスクリー
ン印刷の何れか又はそれらの組み合わせを使用して印刷
されており、近赤外もしくは赤外領域に吸収を有する色
素を含まないか又は第１の混合割合で含むインキで印刷
された部分と近赤外もしくは赤外領域に吸収を有する色
素を第２の混合割合で含むインキで印刷された部分とを
有することを特徴とする前記印刷物。(2) In the printed matter according to claim 1, the substrate is printed using any one or a combination of letterpress printing, offset printing, gravure printing, or screen printing, and is printed in the near-infrared or infrared region. A part printed with an ink that does not contain or contains a dye that absorbs in the near-infrared or infrared region at a first mixing ratio, and a part printed with an ink that contains a dye that absorbs in the near-infrared or infrared region at a second mixing ratio. The printed matter characterized in that it has the following.
、前記印刷物の近赤外もしくは赤外領域の反射又は吸収
を検出することにより、視覚的に表面上同じである近赤
外もしくは赤外領域に吸収を有する色素を含まないか又
は第１の混合割合で含む領域部分と、近赤外もしくは赤
外領域に吸収を有する色素を第２の混合割合で含む領域
部分とを識別することを特徴とする前記識別方法。(3) In the method for identifying a printed matter according to claim 1 or 2, by detecting reflection or absorption in the near-infrared or infrared region of the printed matter, the near-infrared or infrared that is visually the same on the surface is detected. Distinguishing between a region that does not contain a dye having absorption in the region or contains it at a first mixing ratio and a region that contains a dye that absorbs in the near-infrared or infrared region at a second mixing ratio. The above-mentioned identification method is characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25414789A JPH03114871A (en) | 1989-09-29 | 1989-09-29 | Print and discriminating method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25414789A JPH03114871A (en) | 1989-09-29 | 1989-09-29 | Print and discriminating method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03114871A true JPH03114871A (en) | 1991-05-16 |
Family
ID=17260879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25414789A Pending JPH03114871A (en) | 1989-09-29 | 1989-09-29 | Print and discriminating method thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03114871A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005246821A (en) * | 2004-03-05 | 2005-09-15 | National Printing Bureau | Printed matter, and equipment and device for discrimination thereof |
| CN117871461A (en) * | 2024-03-11 | 2024-04-12 | 福建省海泓彩印有限公司 | Color identification method of color printing ink based on near infrared spectrum |
-
1989
- 1989-09-29 JP JP25414789A patent/JPH03114871A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005246821A (en) * | 2004-03-05 | 2005-09-15 | National Printing Bureau | Printed matter, and equipment and device for discrimination thereof |
| CN117871461A (en) * | 2024-03-11 | 2024-04-12 | 福建省海泓彩印有限公司 | Color identification method of color printing ink based on near infrared spectrum |
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