JPH0593160A - Infrared-absorbing printing ink and print of classified information - Google Patents
Infrared-absorbing printing ink and print of classified informationInfo
- Publication number
- JPH0593160A JPH0593160A JP3278337A JP27833791A JPH0593160A JP H0593160 A JPH0593160 A JP H0593160A JP 3278337 A JP3278337 A JP 3278337A JP 27833791 A JP27833791 A JP 27833791A JP H0593160 A JPH0593160 A JP H0593160A
- Authority
- JP
- Japan
- Prior art keywords
- infrared
- printing ink
- ink
- 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.)
- Granted
Links
Landscapes
- Credit Cards Or The Like (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
Abstract
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 confidential information printed matter 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, an infrared absorbing agent such as carbon black has been generally used for infrared readable codes, for example, infrared detection bar codes, and in recent years, infrared absorbing leuco dyes have also been used. .. Codes using these materials can be identified as absorption / non-absorption patterns (black / white patterns) in the infrared light region, but absorption / non-absorption can be detected in the visible light region as well. It is a thing.
【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, for example, when security is required for securities, plastic cards, etc., and in particular, the identification code is visible on the surface. In many cases, it can be a target of forgery and falsification. Therefore, it is desired to make 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 the code portion with a process ink or the like which is black in the visible region and has a property of transmitting infrared rays can be considered. According to such a method, If the black pattern is unnatural in terms of design and has an unnatural design, it is easy to imagine hiding the code, so there was a risk of forgery and 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。Further, infrared machine readable marks such as bar codes and carla codes using the above materials are
For example, packaging materials occupy a large area, and because they are conventionally colored in black and other colors, black ink is printed on them for concealment, forming a black base. It was also unnatural in terms of design, such as being stored.
【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。Therefore, the object of the present invention is to eliminate the above-mentioned design unnaturalness, and further, to provide a secret information printed material which can be mechanically read by infrared light and the confidential information printed material and the printed material. Is to provide an infrared absorbing printing ink that absorbs but not 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。In view of the above-mentioned problems, the inventors of the present invention have earnestly studied, and as a result, the above-mentioned object of the present invention was as follows.
Phosphorus pentaoxide as the main component, iron oxide and / or copper oxide
Infrared absorbing printing ink consisting of powdered phosphate glass containing 1.0% by weight or more, (2) binder, and (3) solvent, and infrared reflecting substrate, and infrared absorbing property provided in a pattern on the substrate A printed image composed of a printing ink, wherein the infrared absorbing printing ink is composed of powdered phosphate glass containing phosphorus pentoxide as a main component and iron oxide and / or copper oxide in an amount of 1.0% by weight or more, and a binder. It has been found to be achieved by providing a confidential 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。The present invention will be described in more detail below.
【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 powdered phosphate glass constituting the infrared absorbing printing ink of the present invention contains phosphorus pentoxide as a main component,
It contains iron oxide and / or copper oxide in an amount of 1.0% by weight or more, preferably phosphorus pentoxide in a weight percentage of 35.0 to 80.0.
%, And each of iron oxide and copper oxide is preferably 0 to 3.0%. Further, the above phosphate glass contains the following compounds, if necessary.
【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 wt% B 2 O 3 1.0 to 30.0 wt% MgO 3.0 to 10.0 wt% ZnO 0 to 3.0 wt% K 2 O 0 to 15.0 wt% BaO 0 to 10.0 wt% SrO 0 to 1.0 wt% Ni, Co, Se Trace amount
【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 powdered phosphate glass used in the present invention is a powdered product of the phosphate glass obtained above, and the present invention uses the powdered glass as a pigment to form an ink.
【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 80% by weight or less of the powdered phosphate glass is contained in the printing ink composition excluding the solvent. If it exceeds 80% by weight, a mat-like structure is formed, and the glass surface is reflected, that is, infrared light is reflected.
In addition, the cohesive force is also limited, and the adhesiveness and scratch strength are also 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, vinyl acetate vinyl resin, saturated polyester, polyurethane elastomer and the like are 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 a defoaming 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。As the solvent used for the infrared absorbing printing ink, toluene, methyl isobutyl ketone, xylene, cyclohexanol, isobutyl acetate,
Examples thereof include cyclohexanone, methylcyclohexanone, glycol derivatives such as ethylene glycol monobutyl ether, and mixed solvents 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 the infrared reflecting substrate to obtain 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。Examples of the infrared reflecting substrate used include those capable of reflecting at least 80% or more of infrared rays depending on the application, such as, for example, pate vinyl chloride and paper impregnated with titanium oxide or the like.
【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 image provided in a pattern, for example, a bar code, a two-dimensional code, characters, numbers, etc.
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 confidential information printed matter of the present invention is a stock certificate / bond /
In addition to securities such as checks, bankbooks, treasure lottery tickets, tickets, coupons, commuter passes, 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 confidential information printed matter as described above,
The printed image is, for example, 750 nm by a semiconductor laser, 7
It can be identified as a black pattern by light of 80 nm, 810 nm, 830 nm, 905 nm, etc.
【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。[Function] As 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 but is visible. It is possible to obtain an infrared absorbing printing ink that does not absorb in the area, and by using such a printing ink, an infrared readable code such as a bar code is provided on the infrared reflecting substrate. It is possible to obtain a confidential information printed matter that can be mechanically read by infrared light without being artificially colored.
【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。EXAMPLES The present invention will be described in more detail below with reference to 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 (Asahi Glass Brillite) 40 parts Vinyl acetate vinyl resin (Sekisui Chemical's S-REC A) 10 parts Saturated polyester (Toyobo Byron 103) 5 parts Polyurethane elastomer (Nippon Polyurethane N-2304) 12 parts Isocyanate curing agent 3 parts Triethylenediamine 0.5 part Solvent (toluene / methyl isobutyl ketone) 60 parts However, Asahi Glass Brillite 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 (wt%) 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 almost invisible to the naked eye.
【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 this pattern with process ink, the entire printed portion becomes visible. When this was detected with the light of each of the semiconductor lasers 780 nm, 830 nm, and 905 nm, the portion formed by 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 above in detail, according to the present invention, it is possible to provide an infrared absorbing printing ink which has absorption in the infrared region but does not absorb in the visible region. Also,
By using the infrared absorptive printing ink, it is possible to provide a confidential information printed matter that can be mechanically read by infrared light without coloring unnaturally in design as in the past.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ０６Ｋ 19/06 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location G06K 19/06
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) 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, (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 reflecting substrate and a printed image composed of an infrared absorbing printing ink provided in a pattern on the substrate, the infrared absorbing printing ink comprising:
Phosphorus pentaoxide as the main component, iron oxide and / or copper oxide
A confidential 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 true JPH0593160A (en) | 1993-04-16 |
| JP2624056B2 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) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996008788A1 (en) * | 1994-09-17 | 1996-03-21 | Hirokazu Yoshida | Recording card and recording method for two-dimensional code |
| US6651894B2 (en) | 2000-12-12 | 2003-11-25 | Ricoh Company, Ltd. | Imaging method, imaging apparatus, and image information management system |
| JP2009517490A (en) * | 2005-11-25 | 2009-04-30 | シクパ・ホールディング・ソシエテ・アノニム | Infrared absorbing intaglio ink |
| JP2021523280A (en) * | 2018-05-15 | 2021-09-02 | シクパ ホルディング ソシエテ アノニムＳｉｃｐａ Ｈｏｌｄｉｎｇ Ｓａ | Machine-readable security function |
-
1991
- 1991-09-30 JP JP3278337A patent/JP2624056B2/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996008788A1 (en) * | 1994-09-17 | 1996-03-21 | Hirokazu Yoshida | Recording card and recording method for two-dimensional code |
| US6651894B2 (en) | 2000-12-12 | 2003-11-25 | Ricoh Company, Ltd. | Imaging method, imaging apparatus, and image information management system |
| US6935565B2 (en) | 2000-12-12 | 2005-08-30 | Ricoh Company, Ltd. | Imaging method, imaging apparatus, and image information management system |
| JP2009517490A (en) * | 2005-11-25 | 2009-04-30 | シクパ・ホールディング・ソシエテ・アノニム | Infrared absorbing intaglio ink |
| US8080307B2 (en) | 2005-11-25 | 2011-12-20 | Sicpa Holding Sa | IR-absorbing Intaglio ink |
| US8362130B2 (en) | 2005-11-25 | 2013-01-29 | Sicpa Holding Sa | IR-absorbing Intaglio ink |
| JP2021523280A (en) * | 2018-05-15 | 2021-09-02 | シクパ ホルディング ソシエテ アノニムＳｉｃｐａ Ｈｏｌｄｉｎｇ Ｓａ | Machine-readable security function |
| US11891527B2 (en) | 2018-05-15 | 2024-02-06 | Sicpa Holding Sa | Machine readable security features |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2624056B2 (en) | 1997-06-25 |
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| JP2792358B2 (en) | Infrared absorbing printing ink | |
| GB2355431A (en) | Pre-paid telephone card with tamper evident scratch off area | |
| JP2855847B2 (en) | Information recording medium | |
| JPH06106875A (en) | Book having machine-readable mark | |
| JP3409351B2 (en) | Information carrying sheet | |
| JPH0796656A (en) | Information record medium | |
| JP3413936B2 (en) | Information recording medium | |
| JPH03275389A (en) | Printed matter having discrimination mark | |
| EP0610362B1 (en) | Security ticket | |
| JP3120544B2 (en) | Information recording medium | |
| JPH06255671A (en) | Packaging material | |
| EP3838994A1 (en) | An ink recipe composition for printing a multi-color image in a security element on a substrate, which element is visible both in the wavelength range of visible light (vis) and in the wavelength range of ultraviolet light (uv), a method of preparation of a system with such security element on a substrate and a system to be used as a security or identification feature of the object marked with such system | |
| GB2352422A (en) | A tamper indicating scratch off lottery ticket or other printed document | |
| JPH06286363A (en) | Invisible information record medium and information recording method which handles it |
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