JP2624056B2 - Infrared absorbing printing ink and confidential information printed matter - Google Patents
Infrared absorbing printing ink and confidential information printed matterInfo
- Publication number
- JP2624056B2 JP2624056B2 JP3278337A JP27833791A JP2624056B2 JP 2624056 B2 JP2624056 B2 JP 2624056B2 JP 3278337 A JP3278337 A JP 3278337A JP 27833791 A JP27833791 A JP 27833791A JP 2624056 B2 JP2624056 B2 JP 2624056B2
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- printing ink
- printed matter
- weight
- absorbing printing
- 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.)
- Expired - Fee Related
Links
Landscapes
- Credit Cards Or The Like (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は赤外線により読みとり可
能な秘密情報印刷物及び該印刷物に用いられる赤外線吸
収性印刷インキに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed matter of confidential information readable by infrared rays and an infrared-absorbing printing ink used for the printed matter.
【０００２】[0002]
【従来の技術】従来、赤外線により読みとり可能なコー
ド、例えば赤外検知のバーコードにはカーボンブラック
等の赤外線吸収剤が一般に用いられており、近年では赤
外線吸収可能なロイコ染料も用いられている。これらの
材料を用いたコードは、赤外光領域で吸収、非吸収のパ
ターン（黒・白のパターン）として識別しうるものであ
るが可視光領域においても同様に吸収・非吸収が検知さ
れうるものである。2. Description of the Related Art Conventionally, infrared absorbents such as carbon black are generally used for codes which can be read by infrared rays, for example, bar codes for infrared detection, and in recent years, leuco dyes which can absorb infrared rays have also been used. . A code using these materials can be identified as an absorption / non-absorption pattern (black / white pattern) in the infrared light region, but absorption / non-absorption can be similarly detected in the visible light region. Things.
【０００３】[0003]
【発明が解決しようとする課題】このような材料は、例
えば証券類・プラスチックカード等のセキューリティー
性が要求される場合には適用できず、特に識別コードが
目視可能に表に出てしまっている場合等、偽造・改ざん
のターゲットになる恐れが多い。従って、このような識
別コードを不可視とする事が要望されている。Such a material cannot be applied when security is required, for example, in securities or plastic cards, and in particular, the identification code appears in a visible manner. In many cases, it is likely to be a target for forgery or falsification. Therefore, there is a demand for making such an identification code invisible.
【０００４】このような問題を解決するため、コードの
部分を可視領域では黒色であり、赤外線を透過する性質
を有するプロセスインキ等で隠蔽する方法が考えられる
が、このような方法によれば、用途的に限られたものに
なってしまい、更にデザイン的に不自然な黒色パターン
があると、コードの隠蔽が容易に想像される為、やはり
偽造・改ざん等の恐れがあった。In order to solve such a problem, a method of concealing a code portion with a process ink having a property of being black in a visible region and transmitting infrared rays is considered. If the black pattern becomes limited in use, and there is an unnatural black pattern in design, it is easy to imagine concealment of the code, so that there is also a risk of forgery or falsification.
【０００５】また、上記のような材料を用いたバーコー
ドやカルラコード等の赤外機械読みとり可能マークは、
例えば包装材料等においては、多大な面積を占めてしま
うこと、また、従来、黒・その他の色で着色されていた
ため、隠蔽のため、上に黒色インキを印刷しており、黒
色下地となってしまう等デザイン的にも不自然であっ
た。[0005] Infrared machine-readable marks, such as bar codes and carla codes, using the above materials,
For example, in packaging materials, etc., it occupies a large area, and since it was conventionally colored in black and other colors, black ink was printed on it for concealment, and it became a black base It was unnatural in terms of design, such as getting lost.
【０００６】従って、本発明の目的は、上記のようなデ
ザイン的不自然さを解消し、さらに、赤外光で機械読み
出し可能な秘密情報印刷物及び該印刷物に用いることが
でき、赤外領域には吸収があるが可視領域には吸収のな
い赤外線吸収性印刷インキを提供することにある。Accordingly, an object of the present invention is to eliminate the above-described unnaturalness in design, and furthermore, it is possible to use a secret information printed matter readable by machine with infrared light and the printed matter. The object of the present invention is to provide an infrared-absorbing printing ink that has absorption but does not absorb in the visible region.
【０００７】[0007]
【課題を解決するための手段】本発明者等は前記課題に
鑑みて、鋭意研究の結果、本発明の上記目的は、（１）
五二酸化リンを主成分とし、酸化鉄及び／又は酸化銅を
1.0重量％以上含む粉末リン酸塩ガラス、（２）バイン
ダー、及び（３）溶剤、からなる赤外線吸収性印刷イン
キ、及び赤外線反射性基体と、該基体上にパターン状に
設けられた赤外線吸収性印刷インキから構成される印刷
画像とから成り、該赤外線吸収性印刷インキが、五二酸
化リンを主成分とし、酸化鉄及び／又は酸化銅を1.0重
量％以上含む粉末リン酸塩ガラス及びバインダーからな
ることを特徴とする秘密情報印刷物を提供することによ
り達成されることを見出した。Means for Solving the Problems In view of the above problems, the present inventors have conducted intensive studies, and as a result, the object of the present invention is to provide (1)
Phosphorus pentoxide as the main component, iron oxide and / or copper oxide
An infrared-absorbing printing ink comprising powder phosphate glass containing 1.0% by weight or more, (2) a binder, and (3) a solvent, and an infrared-reflective substrate, and an infrared-absorbing substrate provided in a pattern on the substrate. A printing image comprising a printing ink, wherein the infrared-absorbing printing ink comprises a powdered phosphate glass and a binder containing phosphorus pentoxide as a main component and containing iron oxide and / or copper oxide in an amount of 1.0% by weight or more. It has been found that this is achieved by providing a secret information printed matter characterized by the following.
【０００８】以下に本発明を更に具体的に説明する。Hereinafter, the present invention will be described more specifically.
【０００９】本発明の赤外線吸収性印刷インキを構成す
る粉末リン酸塩ガラスは、五二酸化リンを主成分とし、
酸化鉄及び／又は酸化銅を1.0重量％以上含むが、好ま
しくは五二酸化リンを、重量パーセントで35.0〜80.0
％、酸化鉄及び酸化銅をそれぞれ０〜3.0％含むことが
好ましい。更に、上記リン酸塩ガラスは必要に応じ、以
下の化合物を含有する。The powdery phosphate glass constituting the infrared-absorbing printing ink of the present invention contains phosphorus pentoxide as a main component,
It contains at least 1.0% by weight of iron oxide and / or copper oxide, and preferably contains phosphorus pentoxide in a weight percentage of 35.0 to 80.0%.
%, Iron oxide and copper oxide, respectively. Further, the phosphate glass contains the following compounds as required.
【００１０】 Ａｌ2Ｏ3 2.0〜10.0 重量％ Ｂ2Ｏ3 1.0〜30.0 重量％ ＭｇＯ 3.0〜10.0 重量％ ＺｎＯ 0〜 3.0 重量％ Ｋ2Ｏ 0〜15.0 重量％ ＢａＯ 0〜10.0 重量％ ＳｒＯ 0〜 1.0 重量％ Ｎｉ，Ｃｏ，Ｓｅ 微量Al 2 O 3 2.0 to 10.0% by weight B 2 O 3 1.0 to 30.0% by weight MgO 3.0 to 10.0% by weight ZnO 0 to 3.0% by weight K 2 O 0 to 15.0% by weight BaO 0 to 10.0% by weight SrO 0 to 1.0 wt% Ni, Co, Se trace
【００１１】本発明に用いる粉末リン酸塩ガラスは、上
記得られたリン酸塩ガラスを粉末化したものであり、本
発明はこれを顔料としてインキ化したものを用いる。The phosphate glass powder used in the present invention is obtained by pulverizing the above-obtained phosphate glass, and the present invention uses ink obtained by using this as a pigment.
【００１２】このような粉末リン酸塩ガラスは溶剤を除
く印刷インキ組成物中に８０重量％以下含まれることが
好ましい。８０重量％をこえるとマット状になり、ガラ
ス表面の反射すなわち赤外光の反射がおこってくる。
又、凝集力的にも限界となり接着性、引っ掻き強度も低
下する。It is preferable that such a powdered phosphate glass be contained in an amount of 80% by weight or less in the printing ink composition excluding the solvent. If it exceeds 80% by weight, it becomes mat-like, and reflection of the glass surface, that is, reflection of infrared light occurs.
In addition, the cohesive strength is limited, and the adhesiveness and the scratching strength are reduced.
【００１３】本発明の赤外線吸収性印刷インキに含まれ
るバインダーとしては、塩酢酸ビニル系樹脂、飽和ポリ
エステル、ポリウレタンエラストマー等が用いられる。As the binder contained in the infrared-absorbing printing ink of the present invention, a vinyl chloride salt-based resin, a saturated polyester, a polyurethane elastomer or the like is used.
【００１４】上記バインダーは溶剤を除く印刷インキ組
成物中に２０重量％以下含まれることが好ましい。The binder is preferably contained in the printing ink composition excluding the solvent in an amount of 20% by weight or less.
【００１５】更に本発明の赤外線吸収性印刷インキに
は、上記材料に加え、消泡剤、滑剤等を含むこともでき
る。Further, the infrared absorbing printing ink of the present invention may contain an antifoaming agent, a lubricant and the like in addition to the above materials.
【００１６】また、上記赤外線吸収性印刷インキに用い
られる溶剤としては、トルエン、メチルイソブチルケト
ン、キシレン、シクロヘキサノール、酢酸イソブチル、
シクロヘキサノン、メチルシクロヘキサノン、エチレン
グリコールモノブチルエーテル等のグリコール誘導体
等、又はこれらの混合溶媒が挙げられる。The solvent used for the above-mentioned infrared absorbing printing ink includes toluene, methyl isobutyl ketone, xylene, cyclohexanol, isobutyl acetate, and the like.
Examples thereof include glycol derivatives such as cyclohexanone, methylcyclohexanone, and ethylene glycol monobutyl ether, and the like, and a mixed solvent thereof.
【００１７】上記赤外線吸収性印刷インキを赤外線反射
性基体上にパターン状に設け印刷画像を得ることにより
本発明の秘密情報印刷物が得られる。The secret information printed matter of the present invention can be obtained by providing the infrared absorbing printing ink in a pattern on an infrared reflective substrate and obtaining a printed image.
【００１８】用いられる赤外線反射性基体としては、そ
の用途により、少なくとも赤外線を８０％以上反射しう
るもの、例えば酸化チタン等をぬりこんだペート塩ビや
紙が挙げられる。As the infrared-reflective substrate to be used, there may be mentioned a substrate capable of reflecting at least 80% or more of infrared rays, for example, a sheet of polyvinyl chloride or paper into which titanium oxide or the like is coated, depending on the application.
【００１９】パターン状に設けられる印刷画像として
は、例えばバーコード、二次元コード、文字、数字等、
これらに限らずあらゆるパターンを設けることができ
る。The printed images provided in a pattern include, for example, bar codes, two-dimensional codes, characters, numerals, and the like.
Not limited to these, any pattern can be provided.
【００２０】本発明の秘密情報印刷物は、株券・債券・
小切手・通帳・宝クジ・乗車券・回数券・定期券といっ
た証券類の他に、ＩＤカード、クレジットカード、キャ
ッシュカード、ギフトカードなどのプラスチックカー
ド、テレホンカードに代表されるプリペードカードとい
った金券に変わる証券関連商品に適用できる。The printed confidential information of the present invention can be used for stock certificates, bonds,
In addition to securities such as checks, passbooks, treasure lottery, tickets, coupons, and commuter passes, it will change to gold cards such as plastic cards such as ID cards, credit cards, cash cards, gift cards, and prepaid cards such as telephone cards. Applicable to securities related products.
【００２１】上記のような秘密情報印刷物においては、
上記印刷画像は、例えば半導体レーザーによる750nm、7
80nm、810nm、830nm、905nm等の光により黒色パターン
として識別できる。In the above secret information printed matter,
The printed image is, for example, 750 nm by a semiconductor laser, 7
It can be identified as a black pattern by light such as 80 nm, 810 nm, 830 nm, and 905 nm.
【００２２】[0022]
【作用】本発明における如く、五二酸化リンを主成分と
し、酸化鉄及び／又は酸化銅を1.0重量％以上含む粉末
リン酸塩ガラスを用いることにより、赤外領域には吸収
を有するが、可視領域には吸収のない赤外線吸収性印刷
インキを得ることができ、また、このような印刷インキ
を用いて、バーコード等の赤外線により読みとり可能な
コードを赤外線反射性基体上に設けることにより、デザ
イン的に不自然な着色を施すことなく、赤外光で機械読
み出し可能な秘密情報印刷物が得られる。As described in the present invention, by using a powdered phosphate glass containing phosphorus pentoxide as a main component and containing iron oxide and / or copper oxide in an amount of 1.0% by weight or more, it has absorption in the infrared region, It is possible to obtain an infrared-absorbing printing ink that has no absorption in the area, and by using such a printing ink, a code that can be read by infrared rays such as a bar code is provided on an infrared-reflective substrate, and the design is made. Thus, it is possible to obtain a confidential information printed matter that is mechanically readable by infrared light without giving any unnatural coloring.
【００２３】[0023]
【実施例】以下に本発明を実施例により、更に具体的に
示す。 実施例１ 下記組成の赤外線吸収性印刷インキを調製した。The present invention will be described in more detail with reference to the following examples. Example 1 An infrared absorbing printing ink having the following composition was prepared.
【００２４】 顔料（旭硝子製 ブリルライトを粉砕） 40部 塩酢酸ビニル系樹脂（積水化学製 エスレックＡ） 10部 飽和ポリエステル（東洋紡製 バイロン103） 5部 ポリウレタンエラストマー（日本ポリウレタン製 Ｎ−2304） 12部 イソシアナート硬化剤 3部 トリエチレンジアミン 0.5部 溶剤（トルエン／メチルイソブチルケトン） 60部 但し、旭硝子製ブリルライトは下記組成からなる。Pigment (pulverized by Asahi Glass Brillite) 40 parts Vinyl acetate acetate resin (Eslek A manufactured by Sekisui Chemical) 10 parts Saturated polyester (Byron 103 manufactured by Toyobo) 5 parts Polyurethane elastomer (N-2304 manufactured by Nippon Polyurethane) 12 parts Isocyanate curing agent 3 parts Triethylene diamine 0.5 parts Solvent (toluene / methyl isobutyl ketone) 60 parts However, Brillite manufactured by Asahi Glass has the following composition.
【００２５】 Ａｌ2Ｏ3 5.2（重量％） Ｐ2Ｏ5 78 ＭｇＯ 5.4 ＢａＯ 9.0 ＣｕＯ 1.7 ＳｒＯ 0.05Al 2 O 3 5.2 (% by weight) P 2 O 5 78 MgO 5.4 BaO 9.0 CuO 1.7 SrO 0.05
【００２６】上記得られた印刷インキをブルー系の紙に
バーコードパターンとして印刷した。この印刷されたパ
ターンは目視ではほとんど目立たないものであった。The printing ink obtained above was printed as a bar code pattern on blue paper. The printed pattern was hardly noticeable visually.
【００２７】さらにこのパターン上にプロセスインキに
て可視色の印刷を施すと、印刷部分全面が可視状態とな
る。これを半導体レーザー780nm、830nm及び905nmの各
々の光で検出すると、上記赤外線吸収性印刷インキによ
る部分は黒色パターンとして識別された。Further, when a visible color is printed on the pattern with process ink, the entire printed portion becomes visible. When this was detected with light of each of the semiconductor lasers at 780 nm, 830 nm and 905 nm, the portion made of the infrared absorbing printing ink was identified as a black pattern.
【００２８】[0028]
【発明の効果】以上詳細に説明したように、本発明によ
り赤外領域には吸収があるが可視領域には吸収のない赤
外線吸収性印刷インキを提供することができる。また、
該赤外線吸収性印刷インキを用いることにより、従来の
如くデザイン的に不自然な着色を施すことなく赤外光で
機械読み出し可能な秘密情報印刷物を提供することがで
きる。As described in detail above, the present invention can provide an infrared-absorbing printing ink having absorption in the infrared region but not in the visible region. Also,
By using the infrared-absorbing printing ink, it is possible to provide a confidential information printed matter that is machine-readable by infrared light without giving an unnatural coloring in design as in the related art.
Claims (2)
鉄及び／又は酸化銅を1.0重量％以上含む粉末リン酸塩
ガラス、（２）バインダー、及び（３）溶剤、からなる
赤外線吸収性印刷インキ。1. Infrared absorption comprising (1) a powdered phosphate glass containing phosphorus pentoxide as a main component and at least 1.0% by weight of iron oxide and / or copper oxide, (2) a binder, and (3) a solvent. Printing ink.
ン状に設けられた赤外線吸収性印刷インキから構成され
る印刷画像とから成り、該赤外線吸収性印刷インキが、
五二酸化リンを主成分とし、酸化鉄及び／又は酸化銅を
1.0重量％以上含む粉末リン酸塩ガラス及びバインダー
からなることを特徴とする秘密情報印刷物。2. An infrared-reflective printing ink comprising: an infrared-reflective substrate; and a printed image composed of an infrared-absorbing printing ink provided in a pattern on the substrate.
Phosphorus pentoxide as the main component, iron oxide and / or copper oxide
A secret information printed matter comprising a powdered phosphate glass containing 1.0% by weight or more and a binder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3278337A JP2624056B2 (en) | 1991-09-30 | 1991-09-30 | Infrared absorbing printing ink and confidential information printed matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3278337A JP2624056B2 (en) | 1991-09-30 | 1991-09-30 | Infrared absorbing printing ink and confidential information printed matter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0593160A JPH0593160A (en) | 1993-04-16 |
| JP2624056B2 true JP2624056B2 (en) | 1997-06-25 |
Family
ID=17595929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3278337A Expired - Fee Related JP2624056B2 (en) | 1991-09-30 | 1991-09-30 | Infrared absorbing printing ink and confidential information printed matter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2624056B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0887578A (en) * | 1994-09-17 | 1996-04-02 | Hiroichi Yoshida | Two-dimensional code information recording card and information recording method for same |
| JP2002240387A (en) | 2000-12-12 | 2002-08-28 | Ricoh Co Ltd | Imaging method, imaging apparatus and image information management system |
| PT1790701E (en) * | 2005-11-25 | 2009-03-05 | Sicpa Holding Sa | Ir-absorbing intaglio ink |
| BR112020023266A2 (en) | 2018-05-15 | 2021-02-23 | Sicpa Holding Sa | machine-readable security features |
-
1991
- 1991-09-30 JP JP3278337A patent/JP2624056B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0593160A (en) | 1993-04-16 |
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