JP2005264074A - Magnetic ink composition and printed product of the same - Google Patents

Magnetic ink composition and printed product of the same Download PDF

Info

Publication number
JP2005264074A
JP2005264074A JP2004081336A JP2004081336A JP2005264074A JP 2005264074 A JP2005264074 A JP 2005264074A JP 2004081336 A JP2004081336 A JP 2004081336A JP 2004081336 A JP2004081336 A JP 2004081336A JP 2005264074 A JP2005264074 A JP 2005264074A
Authority
JP
Japan
Prior art keywords
magnetic
ink composition
magnetic ink
region
tickets
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
Application number
JP2004081336A
Other languages
Japanese (ja)
Inventor
Yasumasa Kawaguchi
川口泰正
Sadanobu Mitsushima
光島▲禎▼伸
Hiroyuki Sone
曽根博之
Noriyuki Sudo
須藤則行
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Printing Bureau
Original Assignee
National Printing Bureau
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by National Printing Bureau filed Critical National Printing Bureau
Priority to JP2004081336A priority Critical patent/JP2005264074A/en
Publication of JP2005264074A publication Critical patent/JP2005264074A/en
Pending legal-status Critical Current

Links

Images

Abstract

<P>PROBLEM TO BE SOLVED: To provide a magnetic ink composition with an excellent forgery prevention measure, which can be used for valuable goods such as negotiable securities, cards, stamps, goods taggings, trafficking tickets such as tickets and commuting pass, coupon tickets for toll roads, various tickets and gift certificates. <P>SOLUTION: The magnetic ink composition has characteristics having an absorption band in the range from the ultraviolet to visible region and giving transparency in the infrared region. The amount of remanent magnetization is 25-35A×m<SP>2</SP>/kg(emu/g). The magnetic ink composition contains a magnetic material and vehicles with average particle diameter of 10-600 nm. The printed product is prepared by printing the above magnetic ink composition on a base material. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、紫外線領域から可視光領域にかけて吸収帯域を有し、赤外線領域で光を透過する特性を有し、残留磁化25〜35A・m/kg(emu/g)を有する磁性体と、ビヒクルを含有してなる磁性インキ組成物及びその印刷物に関する。 The present invention has a characteristic of having an absorption band from the ultraviolet region to the visible light region, transmitting light in the infrared region, and having a remanent magnetization of 25 to 35 A · m 2 / kg (emu / g); The present invention relates to a magnetic ink composition containing a vehicle and a printed product thereof.

有価証券、カード、印紙類、商品タグ、切符や定期券等の通行券、有料道路等の回数券、各種チケット、商品券等の貴重品は、その価値を保証・維持するために、偽造防止及び改竄防止技術が施されている。そのため、このような貴重品には、バーコード等の特定の磁気パターンを磁気インキによって形成することで、偽造防止及び改竄防止効果並びに機械処理による真偽判別の向上を図ることが一般的に行われている。機械処理による真偽判別は、磁気の有無、磁気強度、パターン等の信号を機械で読み取ることにより、真偽判別を行っている。   Anti-counterfeiting securities, cards, stamps, product tags, pass tickets such as tickets and commuter passes, coupon tickets for toll roads, various tickets and valuables such as gift certificates are guaranteed and maintained. And anti-tampering technology is applied. For this reason, it is common practice to improve the anti-counterfeiting and tampering prevention effects and the authenticity discrimination by machine processing by forming a specific magnetic pattern such as a barcode with magnetic ink on such valuables. It has been broken. In the true / false discrimination by the machine processing, the true / false discrimination is performed by reading signals such as the presence / absence of magnetism, magnetic strength, and pattern with a machine.

例えば、磁性インキによる印刷物として、記録部に対する情報の記録又は再生に関する情報が記録された複数の磁気バーコードとを有し、この磁気バーコードは相互に異なる磁気量を持つ記録媒体が開示されている(特許文献1参照)。   For example, a printed material using magnetic ink has a plurality of magnetic bar codes on which information related to recording or reproduction of information on a recording unit is recorded, and the magnetic bar code discloses a recording medium having different magnetic amounts. (See Patent Document 1).

支持体上に形成された磁気パターン層および該磁気パターン層を隠蔽する着色隠蔽層よりなる磁気記録媒体において、該磁気パターン層が磁性粉末が分散された溶剤可溶性熱可塑性樹脂含有インキにより形成され、該着色隠蔽層が顔料または染料を含有する紫外線または電子線硬化型の無溶剤型インキにより形成されたものであることを特徴とする磁気記録媒体が開示されている(特許文献2参照)。   In a magnetic recording medium comprising a magnetic pattern layer formed on a support and a colored hiding layer for hiding the magnetic pattern layer, the magnetic pattern layer is formed of a solvent-soluble thermoplastic resin-containing ink in which magnetic powder is dispersed, A magnetic recording medium is disclosed in which the colored hiding layer is formed of ultraviolet or electron beam curable solventless ink containing a pigment or dye (see Patent Document 2).

特開昭63−223892号公報(第1頁)JP 63-238992 A (first page) 第2553431号公報(第1頁、第1図)No. 2553431 (first page, FIG. 1)

しかしながら、特開昭63−223892号公報に記載されている磁性材料、第2553431号公報に記載されている磁性材料及び一般的な磁性材料は磁性材料は、黒色又は黒褐色の色調を有しているため、磁性インキで印刷されているか否か容易に推測された。また、特開昭63−223892号公報、第2553431号公報及び一般的な磁性材料は赤外線領域で光を吸収する特性を有しているため、市販の白黒複写機等で複写すると、真正品と同レベルの磁気を有する偽造品が作り出される虞があった。また、近年、市販のスキャナー、複写機及びプリンタによる貴重品の偽造事件が頻繁に発生しており、家庭用機器の性能向上に伴って手軽な偽造の危険性が高まりつつある。また、磁気ビューア、赤外線カメラ等を使用することで貴重品の磁気・光学特性をある程度検知される可能性があるため、従来のように磁気特性または光学特性単独の偽造防止は困難になりつつある。このようなことから、磁性インキで印刷されている領域が推測され難く、更に、複写防止効果に優れる磁性インキ組成物が求められる。   However, the magnetic material described in Japanese Patent Application Laid-Open No. 63-223892, the magnetic material described in Japanese Patent No. 2553431, and the general magnetic material have a black or black-brown color tone. Therefore, it was easily estimated whether or not printing was performed with magnetic ink. In addition, since Japanese Patent Laid-Open Nos. Sho 63-223892 and No. 2553431 and general magnetic materials have a characteristic of absorbing light in the infrared region, they are genuine when copied with a commercially available black-and-white copying machine. There is a risk that counterfeit products having the same level of magnetism may be produced. In recent years, there have been frequent occurrences of counterfeiting of valuables using commercially available scanners, copiers, and printers, and the risk of easy counterfeiting has been increasing as the performance of home appliances has improved. In addition, the use of a magnetic viewer, an infrared camera, etc. may detect the magnetic / optical characteristics of valuables to some extent, so it is becoming difficult to prevent forgery of magnetic characteristics or optical characteristics alone as in the past. . For these reasons, it is difficult to guess the area printed with the magnetic ink, and there is a need for a magnetic ink composition that has an excellent anti-copying effect.

以上のことから、本発明は前述した問題点を解決することを目的としたもので、紫外線領域から可視光領域にかけて吸収帯域を有し、赤外線領域で光を透過する特性を有し、残留磁化25〜35A・m/kg(emu/g)を有し、且つ、保磁力が19.9kA/m〜31.84kA/m(250Oe〜400Oe)を有する磁性体と、ビヒクルを含有してなるインキ組成物及びその印刷物であり、磁性材料の含有量により赤外線反射率が低下しないため、機械読取する上で不都合がない。仮に、磁性が付与されている領域が推測され、プリンタ、複写機等によって複製を試みても、赤外線領域で光透過特性を有するため、真正品と同レベルの光学特性を有する偽造を防止することができる。本発明は、上記記載の磁性インキ組成物及びその印刷物を提案するものである。 From the above, the present invention aims to solve the above-mentioned problems, has an absorption band from the ultraviolet region to the visible light region, has a characteristic of transmitting light in the infrared region, and has residual magnetization. A magnetic material having 25 to 35 A · m 2 / kg (emu / g) and having a coercive force of 19.9 kA / m to 31.84 kA / m (250 Oe to 400 Oe), and a vehicle. Ink composition and printed matter thereof, since the infrared reflectance is not lowered by the content of the magnetic material, there is no problem in machine reading. Even if a region to which magnetism is imparted is estimated and duplication is attempted by a printer, a copying machine, etc., since it has light transmission characteristics in the infrared region, forgery with the same level of optical characteristics as genuine products should be prevented. Can do. The present invention proposes the above-described magnetic ink composition and printed matter thereof.

本発明は、紫外線領域から可視光領域にかけて吸収帯域を有し、赤外線領域で光を透過する特性を有し、残留磁化25〜35A・m/kg(emu/g)を有し、且つ、保磁力が19.9kA/m〜31.84kA/m(250Oe〜400Oe)を有する磁性体と、ビヒクルを含有してなる磁性インキ組成物である。 The present invention has an absorption band from the ultraviolet region to the visible light region, has a property of transmitting light in the infrared region, has a residual magnetization of 25 to 35 A · m 2 / kg (emu / g), and A magnetic ink composition comprising a magnetic material having a coercive force of 19.9 kA / m to 31.84 kA / m (250 Oe to 400 Oe) and a vehicle.

また、本発明は、前記磁性体の平均粒子径が10nm〜600nmである磁性インキ組成物である。   Moreover, this invention is a magnetic ink composition whose average particle diameter of the said magnetic body is 10 nm-600 nm.

また、本発明は、上記記載の磁性インキ組成物が基材に印刷されてなる印刷物である。   Moreover, this invention is a printed matter formed by printing the above-mentioned magnetic ink composition on a base material.

本発明の磁性インキ組成物は磁性材料の含有量により赤外線反射率がほとんど変化しないため、機械読取する上で不都合がなく、バーコード等の検知パターン、検知マーク等の印刷に最適である。仮に、磁性が付与されている領域が推測され、プリンタ、複写機等によって複製を試みても、赤外線領域で光を透過する特性を有するため、真正品と同レベルの光学特性を有する偽造を防止することができる。本発明の磁気インキ組成物は、赤外線領域で光を透過する特性と基材の反射特性を利用しているため、磁性材料の含有量の制約により反射率が低下するというような不都合を避けることができる。   The magnetic ink composition of the present invention has no inconvenience in machine reading because the infrared reflectance hardly changes depending on the content of the magnetic material, and is optimal for printing detection patterns such as barcodes and detection marks. Even if a region with magnetism is inferred and duplication is attempted by a printer, copier, etc., it has the property of transmitting light in the infrared region, preventing forgery with the same level of optical properties as the genuine product. can do. Since the magnetic ink composition of the present invention utilizes the property of transmitting light in the infrared region and the reflection property of the base material, avoid the disadvantage that the reflectivity decreases due to the restriction of the content of the magnetic material. Can do.

本発明を実施するための最良の形態を図面を参照して説明する。しかしながら、本発明は以下に述べる実施するための最良の形態に限定されるものではなく、特許請求の範囲記載における技術的思想の範囲内であれば、その他のいろいろな実施の形態が含まれる。   The best mode for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the best mode for carrying out the invention described below, and includes various other embodiments within the scope of the technical idea described in the scope of claims.

本発明は、紫外線領域から可視光領域にかけて吸収帯域を有し、赤外線領域で光を透過する特性を有し、残留磁化25〜35A・m/kg(emu/g)を有し、且つ、保磁力が19.9kA/m〜31.84kA/m(250Oe〜400Oe)を有する磁性体と、ビヒクルを含有してなる磁性インキ組成物で印刷された印刷物である。更に好ましくは、磁性体は平均粒子径が10nm〜600nmである。 The present invention has an absorption band from the ultraviolet region to the visible light region, has a property of transmitting light in the infrared region, has a residual magnetization of 25 to 35 A · m 2 / kg (emu / g), and It is a printed matter printed with a magnetic ink composition comprising a magnetic material having a coercive force of 19.9 kA / m to 31.84 kA / m (250 Oe to 400 Oe) and a vehicle. More preferably, the magnetic substance has an average particle diameter of 10 nm to 600 nm.

磁性体とビヒクルの重量比は磁性体:ビヒクル=1:1乃至1:20に設定されることが好ましい。磁性体は上記数値内であれば特に限定されるものではない。磁性体は紫外線領域から可視光領域にかけて吸収帯域を有し、赤外線領域で光を透過する特性を有し、残留磁化25〜35A・m/kg(emu/g)の範囲内、且つ、保磁力が19.9kA/m〜31.84kA/m(250Oe〜400Oe)の範囲内であれば特に限定されるものではない。 The weight ratio of the magnetic body to the vehicle is preferably set to magnetic body: vehicle = 1: 1 to 1:20. The magnetic material is not particularly limited as long as it is within the above numerical values. The magnetic material has an absorption band from the ultraviolet region to the visible light region, has a characteristic of transmitting light in the infrared region, has a remanent magnetization of 25 to 35 A · m 2 / kg (emu / g), and is maintained. There is no particular limitation as long as the magnetic force is in the range of 19.9 kA / m to 31.84 kA / m (250 Oe to 400 Oe).

磁性インキ組成物に含有する磁性体の平均粒子径を10nm〜600nmの範囲内にすることによって、赤外線領域で光を透過する特性を示す。本発明の磁性インキ組成物で印刷されて印刷物の磁気読取強度及び光学特性は、磁性インキ組成物の磁性体の種類、組成、粒子形状、量、印刷基材の光学特性及びインキ膜厚に依存する。   When the average particle diameter of the magnetic substance contained in the magnetic ink composition is in the range of 10 nm to 600 nm, it exhibits the characteristic of transmitting light in the infrared region. The magnetic read strength and optical properties of the printed matter printed with the magnetic ink composition of the present invention depend on the type, composition, particle shape and amount of the magnetic material of the magnetic ink composition, the optical properties of the printing substrate and the ink film thickness. To do.

本発明の磁性インキ組成物で印刷された印刷物は、印刷基材の光学特性に大きく影響される。例えば白色紙を基材とした場合には、赤外光はインキを透過したのち紙によって反射されるため、印刷物としては赤外領域で反射特性を持つことになる。例えば黒色紙を基材とした場合には、赤外光はインキを透過したのち紙によって吸収されるため、印刷物としては赤外領域で吸収特性を持つことになる。   The printed matter printed with the magnetic ink composition of the present invention is greatly affected by the optical properties of the printing substrate. For example, when white paper is used as the base material, the infrared light is reflected by the paper after passing through the ink, so that the printed matter has reflection characteristics in the infrared region. For example, when black paper is used as the base material, infrared light is absorbed by the paper after passing through the ink, so that the printed matter has an absorption characteristic in the infrared region.

本発明の磁性インキ組成物で印刷された印刷物は、基材の性質によって赤外領域で透過、反射及び吸収いずれの光学特性を導くことも可能であり、反射・吸収に比べて応用範囲が広い。貴重品において通常使用される基材は紙であり、可視域及び赤外領域にわたって一般に高い反射率を有する。従って、本発明による磁性インキ組成物を用いることにより、磁気を有し且つ反射率の高い印刷画像を得ることができる。ここでは基材の反射特性を利用しているため、磁性体の含有量の制約により反射率が低下するということもない。   The printed matter printed with the magnetic ink composition of the present invention can induce optical properties of transmission, reflection and absorption in the infrared region depending on the properties of the substrate, and has a wider application range than reflection and absorption. . A commonly used substrate for valuables is paper, which generally has a high reflectivity over the visible and infrared regions. Therefore, by using the magnetic ink composition according to the present invention, a printed image having magnetism and high reflectance can be obtained. Here, since the reflection characteristic of the substrate is used, the reflectance does not decrease due to the restriction of the content of the magnetic material.

本発明の磁性インキ組成物は、従来の磁性インキより偽造防止効果が高い。更に、磁性体が含有されていないインキであって、紫外線励起可視発光インキ組成物、紫外線透過インキ組成物、紫外線吸収インキ組成物、赤外線透過インキ組成物又は赤外線吸収インキ組成物のうち少なくとも1つを用いて第1の印刷部分を形成し、本発明の磁性インキ組成物によって第2の印刷部分を形成することによって、第1の印刷部分と第2の印刷部分が異なった光学特性を有し、更に高い偽造防止効果が期待できる。この場合、第1の印刷部分と第2の印刷部分を同色にすることによって肉眼では、第1の印刷部分と第2の印刷部分を区分けして視認することができなくなるため、磁気の材料が付与されている領域が容易に推測できない印刷物となる。印刷領域は特に限定されるものではなく、文字、記号、数字、図柄等を形成することができる。よって、真偽判別用として用いることが最適であるため、有価証券、カード、印紙類、商品タグ、切符や定期券等の通行券、有料道路等の回数券、各種チケット、商品券等の貴重品に適用することが好ましい。   The magnetic ink composition of the present invention has a higher anti-counterfeit effect than conventional magnetic inks. Further, the ink does not contain a magnetic substance, and is at least one of an ultraviolet-excited visible light-emitting ink composition, an ultraviolet-transmitting ink composition, an ultraviolet-absorbing ink composition, an infrared-transmitting ink composition, or an infrared-absorbing ink composition. The first printed portion is formed using the magnetic ink composition of the present invention, and the second printed portion is formed using the magnetic ink composition of the present invention, so that the first printed portion and the second printed portion have different optical characteristics. Further, a higher anti-counterfeit effect can be expected. In this case, since the first printed portion and the second printed portion are made the same color, the first printed portion and the second printed portion cannot be visually recognized separately by the naked eye. The printed area cannot be easily estimated. The print area is not particularly limited, and letters, symbols, numbers, designs, etc. can be formed. Therefore, since it is optimal to use for authenticity determination, valuable securities such as securities, cards, stamps, product tags, pass tickets such as tickets and commuter passes, coupon tickets for toll roads, various tickets, gift certificates, etc. It is preferable to apply to products.

本発明の磁性インキ組成物はビヒクルに磁性体が含有されてなり、ビヒクルとしては特に限定されるものではない。例えば、アマニ油、オリーブ油、ヒマシ油、ヒマワリ油などの油脂類、鯨ロウ、ミツロウ、ラノリン、カルナウバワックス、キャンデリアワックス、モンタンワックスなどの天然ワックス類、パラフィンワックス、マイクロクリスタリンワックス、酸化ワックス、エステルワックス、低分子量ポリエチレンなどの合成ワックス類、ラウリン酸、ミリスチン酸、パルミチン酸、ステアリン酸、フロメン酸、ヘベニン酸などの高級脂肪酸類、ステアリルアルコール、ヘベニルアルコールなどの高級アルコール類、ワセリン、グリセリンなどの石鹸類、グルコース、エチレングルコース、アミロースなどの炭化水素類、脂肪酸エステルなどのエステル類、ステアリンアミド、オレインアミドなどのアミド類、ポリアミド系樹脂、ポリエステル系樹脂、エポキシ系樹脂、ポリウレタン系樹脂、アクリル系樹脂、塩化ビニル系樹脂、セルロース系樹脂、ポリビニル系樹脂、石油系樹脂、エチレン−酢酸ビニル共重合体樹脂、フェノール系樹脂、スチレン系樹脂、ロジン変性樹脂、テルビン樹脂などの樹脂類、天然ゴム、スチレンブタジエンゴム、イソプレンゴム、クロロプレンゴムなどのエラストマー類、水添石油樹脂、シリコーン、流動パラフィン、フッ素樹脂などのタッキファイヤー類などを単独又は混合された物からなる分散媒が使用できる。さらに、必要に応じて分散媒に顔料、染料、界面活性剤、充填剤、酸化防止剤、乾燥剤などを添加して使用してもよい。   The magnetic ink composition of the present invention contains a magnetic substance in a vehicle, and the vehicle is not particularly limited. For example, oils and fats such as linseed oil, olive oil, castor oil, sunflower oil, natural waxes such as whale wax, beeswax, lanolin, carnauba wax, canderia wax, montan wax, paraffin wax, microcrystalline wax, oxidized wax, Synthetic waxes such as ester wax, low molecular weight polyethylene, higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, flamenic acid and hebenic acid, higher alcohols such as stearyl alcohol and hebenyl alcohol, petrolatum, glycerin Soaps such as, hydrocarbons such as glucose, ethylene glucose and amylose, esters such as fatty acid esters, amides such as stearamide and oleinamide, polyamide resins, polyester resins Epoxy resin, polyurethane resin, acrylic resin, vinyl chloride resin, cellulose resin, polyvinyl resin, petroleum resin, ethylene-vinyl acetate copolymer resin, phenol resin, styrene resin, rosin modified resin, From terbin resin and other resins, natural rubber, styrene butadiene rubber, isoprene rubber, chloroprene rubber and other elastomers, hydrogenated petroleum resin, silicone, liquid paraffin, fluororesin and other tackifiers, etc. A dispersion medium can be used. Furthermore, if necessary, pigments, dyes, surfactants, fillers, antioxidants, desiccants and the like may be added to the dispersion medium.

その他に、本発明の磁性インキ組成物に蛍光顔料、パール顔料、ガラスフレーク、コレステリック液晶顔料、蓄光顔料等の機能性顔料を含有してよい。   In addition, the magnetic ink composition of the present invention may contain functional pigments such as fluorescent pigments, pearl pigments, glass flakes, cholesteric liquid crystal pigments, and phosphorescent pigments.

磁性インキ組成物の乾燥方式としては、オフセット用インキ、グラビア用インキ、スクリーン用インキ、凹版用インキ等に使用される一般的な紫外線硬化性インキ、酸化重合性インキ、溶剤型インキ、水性蒸発型インキ等に使用される通常の乾燥方式を用いることが可能である。   As a drying method of the magnetic ink composition, a general ultraviolet curable ink, an oxidation polymerizable ink, a solvent type ink, an aqueous evaporation type used for an offset ink, a gravure ink, a screen ink, an intaglio ink, etc. It is possible to use a normal drying method used for ink and the like.

印刷基材は通常印刷用基材として使用される、紙、プラスチック等を用いることが可能であり、特に限定されるものではない。   The printing substrate can be paper, plastic, or the like that is usually used as a printing substrate, and is not particularly limited.

以下、実施例を用いて本発明を更に詳細に説明するが、本発明の内容は、これらの実施例の範囲に限定されるものではない。   EXAMPLES Hereinafter, although this invention is demonstrated further in detail using an Example, the content of this invention is not limited to the range of these Examples.

(実施例1)
下記組成の磁性インキ組成物を調製した。
磁性体 10重量%
ビヒクル 80重量%
顔料、乾燥剤 10重量%
上記得られた実施例1の磁性インキ組成物を白色紙にインキ膜厚12.5μmで展色して印刷物を得た。紫外線領域である200nmから赤外線領域である2000nmまでの分光反射率を測定した結果、酸化アルミニウムの分光反射率を100%とした場合に、分光反射率が10%程度以下で紫外線領域から可視光領域(200nm〜550nm付近)に吸収帯域を示し、赤外線領域である波長780nm〜1900nm付近にわたる領域では60%以上の分光反射率であった。図1に紫外線領域である200nmから赤外線領域である2000nmまでの分光反射率を示す。白色紙の波長(1)、炭酸カルシウムの波長(2)、磁性体の波長(3)、通常の磁性体の波長(4)を示す。
(Example 1)
A magnetic ink composition having the following composition was prepared.
10% by weight of magnetic material
Vehicle 80% by weight
Pigment, desiccant 10% by weight
The magnetic ink composition obtained in Example 1 was spread on white paper with an ink film thickness of 12.5 μm to obtain a printed matter. As a result of measuring the spectral reflectance from the ultraviolet region of 200 nm to the infrared region of 2000 nm, when the spectral reflectance of aluminum oxide is 100%, the spectral reflectance is about 10% or less and the ultraviolet region to the visible light region. An absorption band was shown in the vicinity of (200 nm to 550 nm), and a spectral reflectance of 60% or more was observed in a region extending from a wavelength range of 780 nm to 1900 nm, which is an infrared region. FIG. 1 shows the spectral reflectance from 200 nm in the ultraviolet region to 2000 nm in the infrared region. The wavelength of white paper (1), the wavelength of calcium carbonate (2), the wavelength of magnetic material (3), and the wavelength of ordinary magnetic material (4) are shown.

実施例1の印刷物においては、赤外光が磁性インキ組成物を透過し、白色紙上で反射することにより高い反射率を実現していることが確認された。また、紫外線センサ、磁気センサ、赤外線センサによって検知が可能であった。また、残留磁化が測れるセンサを用いても識別可能な波形が得られた。   In the printed matter of Example 1, it was confirmed that infrared light was transmitted through the magnetic ink composition and reflected on white paper to achieve a high reflectance. Moreover, the detection was possible by the ultraviolet sensor, the magnetic sensor, and the infrared sensor. In addition, an identifiable waveform was obtained using a sensor capable of measuring residual magnetization.

(実施例2)
下記組成の磁性インキ組成物を調製した。
磁性体 15重量%
ビヒクル 70重量%
顔料、乾燥剤 15重量%
上記得られた実施例2の磁性インキ組成物を白色紙にインキ膜厚5μmで展色して印刷物を得た。次に実施例2の磁性インキ組成物を黒色紙にインキ膜厚5μmで展色して印刷物を得た。磁性インキ組成物を白色紙にインキ膜厚5μmで展色して印刷物を紫外線領域である200nmから赤外線領域である2000nmまでの分光反射率を測定した結果、酸化アルミニウムの分光反射率を100%とした場合に、分光反射率が10%程度以下で紫外線領域から可視光領域(200nm〜550nm付近)に吸収帯域を示し、赤外線領域である波長900nm〜1900nm付近にわたる領域では70%以上の分光反射率であった。磁性インキ組成物を黒色紙にインキ膜厚5μmで展色して印刷物を紫外線領域である200nmから赤外線領域である2000nmまでの分光反射率を測定した結果、酸化アルミニウムの分光反射率を100%とした場合に、紫外線領域から赤外線領域である波長200nm〜2000nm付近にわたる領域では分光反射率が10%程度以下であった。図2に紫外線領域である200nmから赤外線領域である2000nmまでの分光反射率を示す。白色紙の波長(5)、黒色紙の波長(6)、白色紙に付与した磁性体の波長(7)、黒色紙に付与した磁性体の波長(8)を示す。
(Example 2)
A magnetic ink composition having the following composition was prepared.
Magnetic material 15% by weight
Vehicle 70% by weight
Pigment, desiccant 15% by weight
The obtained magnetic ink composition of Example 2 was developed on white paper with an ink film thickness of 5 μm to obtain a printed matter. Next, the magnetic ink composition of Example 2 was developed on black paper with an ink film thickness of 5 μm to obtain a printed matter. The magnetic ink composition was spread on white paper with an ink film thickness of 5 μm, and the printed product was measured for spectral reflectance from the ultraviolet region of 200 nm to the infrared region of 2000 nm. As a result, the spectral reflectance of aluminum oxide was 100%. In this case, the spectral reflectance is about 10% or less, an absorption band is shown from the ultraviolet region to the visible light region (200 nm to 550 nm), and the spectral reflectance of 70% or more is shown in the infrared region where the wavelength ranges from 900 nm to 1900 nm. Met. The magnetic ink composition was developed on black paper with an ink film thickness of 5 μm, and the printed product was measured for spectral reflectance from 200 nm in the ultraviolet region to 2000 nm in the infrared region. As a result, the spectral reflectance of aluminum oxide was 100%. In this case, the spectral reflectance was about 10% or less in the region extending from the ultraviolet region to the infrared region in the vicinity of the wavelength of 200 nm to 2000 nm. FIG. 2 shows the spectral reflectance from the ultraviolet region of 200 nm to the infrared region of 2000 nm. The wavelength of white paper (5), the wavelength of black paper (6), the wavelength of magnetic material applied to white paper (7), and the wavelength of magnetic material applied to black paper (8) are shown.

実施例2の印刷物においては、赤外光が磁性インキ組成物を透過し、白色紙上で反射することにより高い反射率を実現していることが確認された。また、紫外線センサ、磁気センサ、赤外線センサによって検知が可能であった。また、残留磁化が測れるセンサを用いても識別可能な波形が得られた。   In the printed matter of Example 2, it was confirmed that infrared light transmitted through the magnetic ink composition and reflected on white paper realized high reflectance. Moreover, the detection was possible by the ultraviolet sensor, the magnetic sensor, and the infrared sensor. In addition, an identifiable waveform was obtained using a sensor capable of measuring residual magnetization.

(実施例3)
実施例2の磁性インキ組成物を用いて、白色紙にインキ膜厚50μmで展色した印刷物と、黒色紙にインキ膜厚50μmで展色した印刷物では、波長760nmから950nmの領域では35%以上の反射率を示し、960nm以上の波長では波長が長くなるに従い透過率が高くなる特性を示す。
(Example 3)
Using the magnetic ink composition of Example 2, 35% or more in a wavelength range of 760 nm to 950 nm in a printed matter developed with white ink at a film thickness of 50 μm and a printed matter developed on black paper with an ink film thickness of 50 μm In the wavelength of 960 nm or more, the transmittance increases as the wavelength becomes longer.

実施例3の白色紙に印刷した印刷物においては、赤外光が磁性インキ組成物を透過し、基材上で反射することにより高い反射率を実現していることが確認された。黒色紙に印刷した印刷物においては、波長760nmから950nmの赤外光が35%以上の反射率を示しため赤外反射インキ組成物としても利用可能である。また、紫外線センサ、磁気センサ、赤外線センサによって検知が可能となる。また、残留磁化が測れるセンサを用いても識別可能な波形が得られた。   In the printed matter printed on the white paper of Example 3, it was confirmed that infrared light was transmitted through the magnetic ink composition and reflected on the substrate, thereby realizing a high reflectance. In printed matter printed on black paper, infrared light having a wavelength of 760 nm to 950 nm exhibits a reflectance of 35% or more, and thus can be used as an infrared reflective ink composition. Further, detection can be performed by an ultraviolet sensor, a magnetic sensor, or an infrared sensor. In addition, an identifiable waveform was obtained using a sensor capable of measuring residual magnetization.

実施例1、2又は3は、磁性体の割合、印刷基材の分光反射率、インキ膜厚及び分光反射率に本発明は限定されるものではなく、分光反射率は磁性体の割合、印刷基材の分光反射率、インキ膜厚によって、紫外線領域である200nmから赤外線領域である2000nmまでの分光反射率は異なるものである。   In Examples 1, 2, or 3, the present invention is not limited to the ratio of the magnetic material, the spectral reflectance of the printing substrate, the ink film thickness, and the spectral reflectance. Depending on the spectral reflectance of the substrate and the ink film thickness, the spectral reflectance from 200 nm in the ultraviolet region to 2000 nm in the infrared region is different.

実施例1の紫外線領域である200nmから赤外線領域である2000nmまでの分光反射率を示す。The spectral reflectance from 200 nm which is an ultraviolet region of Example 1 to 2000 nm which is an infrared region is shown. 実施例2の紫外線領域である200nmから赤外線領域である2000nmまでの分光反射率を示す。The spectral reflectance from 200 nm which is an ultraviolet region of Example 2 to 2000 nm which is an infrared region is shown.

符号の説明Explanation of symbols

1 実施例1の白色紙の波長
2 実施例1の炭酸カルシウムの波長
3 実施例1の磁性体の波長
4 通常の磁性体の波長
5 実施例2の白色紙の波長
6 実施例2の黒色紙の波長
7 実施例2の白色紙に付与した磁性体の波長
8 実施例2の黒色紙に付与した磁性体の波長
1 Wavelength of white paper of Example 1 Wavelength of calcium carbonate of Example 1 Wavelength of magnetic material of Example 1 Wavelength of normal magnetic material 5 Wavelength of white paper of Example 2 Black paper of Example 2 Wavelength 7 of the magnetic material applied to the white paper of Example 2 Wavelength 8 of the magnetic material applied to the black paper of Example 2

Claims (3)

紫外線領域から可視光領域にかけて吸収帯域を有し、赤外線領域で光を透過する特性を有し、残留磁化25〜35A・m/kg(emu/g)を有し、且つ、保磁力が19.9kA/m〜31.84kA/m(250Oe〜400Oe)を有する磁性体と、ビヒクルを含有してなる磁性インキ組成物。 It has an absorption band from the ultraviolet region to the visible light region, has characteristics of transmitting light in the infrared region, has a residual magnetization of 25 to 35 A · m 2 / kg (emu / g), and has a coercive force of 19 A magnetic ink composition comprising a magnetic material having a viscosity of .9 kA / m to 31.84 kA / m (250 Oe to 400 Oe) and a vehicle. 前記磁性体の平均粒子径が10nm〜600nmである請求項1記載の磁性インキ組成物。 The magnetic ink composition according to claim 1, wherein the magnetic substance has an average particle diameter of 10 nm to 600 nm. 前記請求項1又は2記載の磁性インキ組成物が基材に印刷されてなる印刷物。
A printed matter obtained by printing the magnetic ink composition according to claim 1 or 2 on a substrate.
JP2004081336A 2004-03-19 2004-03-19 Magnetic ink composition and printed product of the same Pending JP2005264074A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004081336A JP2005264074A (en) 2004-03-19 2004-03-19 Magnetic ink composition and printed product of the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004081336A JP2005264074A (en) 2004-03-19 2004-03-19 Magnetic ink composition and printed product of the same

Publications (1)

Publication Number Publication Date
JP2005264074A true JP2005264074A (en) 2005-09-29

Family

ID=35088945

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004081336A Pending JP2005264074A (en) 2004-03-19 2004-03-19 Magnetic ink composition and printed product of the same

Country Status (1)

Country Link
JP (1) JP2005264074A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009000832A (en) * 2007-06-19 2009-01-08 National Printing Bureau Forgery-proof printed matter
JP2012528227A (en) * 2009-05-29 2012-11-12 テトラ ラバル ホールデイングス エ フイナンス ソシエテ アノニム Magnetizable ink
US20190099656A1 (en) 2017-10-02 2019-04-04 Angel Playing Cards Co., Ltd. Playing card
JP2022141626A (en) * 2017-11-17 2022-09-29 コリア ミンティング,セキュリティ プリンティング アンド アイディー カード オペレーティング コーポレーション Alnico-based magnetic particles for security ink

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06286364A (en) * 1993-02-02 1994-10-11 Dainippon Printing Co Ltd Magnetic record medium
JPH11305480A (en) * 1998-02-17 1999-11-05 Toda Kogyo Corp Black magnetic particulate powder for black magnetic toner and black magnetic toner using the black magnetic particulate powder
JP2000160050A (en) * 1998-11-27 2000-06-13 Nittetsu Mining Co Ltd Fluorescent pigment composition
WO2002051643A1 (en) * 2000-12-26 2002-07-04 National Printing Bureau, Incorporated Adiministrative Agency Authenticity discriminating printed matter and authenticity discriminating method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06286364A (en) * 1993-02-02 1994-10-11 Dainippon Printing Co Ltd Magnetic record medium
JPH11305480A (en) * 1998-02-17 1999-11-05 Toda Kogyo Corp Black magnetic particulate powder for black magnetic toner and black magnetic toner using the black magnetic particulate powder
JP2000160050A (en) * 1998-11-27 2000-06-13 Nittetsu Mining Co Ltd Fluorescent pigment composition
WO2002051643A1 (en) * 2000-12-26 2002-07-04 National Printing Bureau, Incorporated Adiministrative Agency Authenticity discriminating printed matter and authenticity discriminating method

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009000832A (en) * 2007-06-19 2009-01-08 National Printing Bureau Forgery-proof printed matter
JP2012528227A (en) * 2009-05-29 2012-11-12 テトラ ラバル ホールデイングス エ フイナンス ソシエテ アノニム Magnetizable ink
TWI487752B (en) * 2009-05-29 2015-06-11 利樂拉伐控股財務公司 Magnetisable ink
JP2015214694A (en) * 2009-05-29 2015-12-03 テトラ ラバル ホールデイングス エ フイナンス ソシエテ アノニム Magnetization possible ink
US9630371B2 (en) 2009-05-29 2017-04-25 Tetra Laval Holdings & Finance S.A. Magnetisable ink
US20190099656A1 (en) 2017-10-02 2019-04-04 Angel Playing Cards Co., Ltd. Playing card
KR20190039009A (en) * 2017-10-02 2019-04-10 엔제루 프레잉구 카도 가부시키가이샤 Playing card
KR102273900B1 (en) * 2017-10-02 2021-07-06 엔제루 구루푸 가부시키가이샤 Playing card
JP2022141626A (en) * 2017-11-17 2022-09-29 コリア ミンティング,セキュリティ プリンティング アンド アイディー カード オペレーティング コーポレーション Alnico-based magnetic particles for security ink

Similar Documents

Publication Publication Date Title
US5427415A (en) Heat sensitive system and use thereof
US8083264B2 (en) Document with invisible encoded information and method of making the same
JP5477526B2 (en) Anti-counterfeit ink, anti-counterfeit medium and anti-counterfeit sticker
JP2008188973A (en) Information carrier which enables genuineness judgement
JP5044841B2 (en) Anti-counterfeit printed matter
CN113759622A (en) Anti-counterfeiting changing device comprising piezochromic fluorescent layer
US20090201321A1 (en) Inline printing of invisible information with an ink jet in a digital press system
EP1034330B1 (en) Security document comprising magnetic particles
US5354723A (en) Method for protecting against duplication with a color copier
JP2005246821A (en) Printed matter, and equipment and device for discrimination thereof
JP2005268655A (en) Magnetic printed matter
JP2005264074A (en) Magnetic ink composition and printed product of the same
JP4528935B2 (en) Printed material for authenticity determination using ink composition
JP2007181941A (en) Magnetic transferring foil
JP6240910B2 (en) Infrared transmitting soft magnetic ink and authenticity printed matter
JP2007203653A (en) Forgery-proof medium and unlawfulness judging method using this medium
JP2008214783A (en) Thread and anti-counterfeit paper
JP2003326823A (en) Latent image display medium
JP2001347745A (en) Antifalsifying medium
JP2018134842A (en) Forgery-preventive printed matter
JP2006183156A (en) Paper having self- and non-self-discriminating function
JP2001019887A (en) Ink for forgery prevention and thermal ribbon
JP2005138399A (en) Forgery preventing slip
USRE36306E (en) Method for protecting against duplication with a color copier
JP2019156917A (en) Magnetic ink and forgery prevention printed matter

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060801

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091015

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091019

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20100511