JP2916991B2 - Card authenticity determination method and device - Google Patents
Card authenticity determination method and deviceInfo
- Publication number
- JP2916991B2 JP2916991B2 JP6242754A JP24275494A JP2916991B2 JP 2916991 B2 JP2916991 B2 JP 2916991B2 JP 6242754 A JP6242754 A JP 6242754A JP 24275494 A JP24275494 A JP 24275494A JP 2916991 B2 JP2916991 B2 JP 2916991B2
- Authority
- JP
- Japan
- Prior art keywords
- card
- light
- authenticity
- layer
- fluorescent
- 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
- 238000000034 method Methods 0.000 title claims description 10
- 239000000463 material Substances 0.000 claims description 39
- 238000004040 coloring Methods 0.000 claims description 32
- 238000010521 absorption reaction Methods 0.000 claims description 20
- 230000031700 light absorption Effects 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 4
- 238000012850 discrimination method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- -1 O 7 Chemical class 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
Landscapes
- Credit Cards Or The Like (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
- Magnetic Record Carriers (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は，磁気カード，ＩＣカー
ド等のカード類の偽造防止方法及び偽造防止装置に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for preventing forgery of cards such as magnetic cards and IC cards.
【０００２】[0002]
【従来の技術】磁気カードやＩＣカード等のカードが幅
広く利用されるに伴い，カードの改造や偽のカードの使
用を防止するためのカードの偽造防止技術の重要性が高
まっている。2. Description of the Related Art With the widespread use of cards such as magnetic cards and IC cards, the importance of card forgery prevention technology for preventing card remodeling and the use of fake cards is increasing.
【０００３】従来，例えば，磁気カードの偽造防止技術
には，必要な情報の磁気記録の他に磁気バーコード等を
加えて，この磁気バーコードを判定して偽造されたもの
かどうかを判別できるようにしたものや，磁気カードに
記録される記録信号の波形を複雑にしたり，記録信号を
変調波を用いて記録したりすることにより，偽造を防止
するものがある。Conventionally, for example, in a technology for preventing forgery of a magnetic card, a magnetic barcode or the like is added in addition to magnetic recording of necessary information, and the magnetic barcode can be determined to determine whether or not it has been forged. In some cases, forgery is prevented by complicating the waveform of the recording signal recorded on the magnetic card or recording the recording signal using a modulated wave.
【０００４】磁気カードに対して，これらの方法の併合
により偽造防止効果を高めることができる。Forgery prevention effects can be enhanced by combining these methods with a magnetic card.
【０００５】[0005]
【発明が解決しようとする課題】しかし，上述の磁気バ
ーコードを用いる方法，記録された記録信号の波形を複
雑にしたり，記録信号を変調波を用いて記録する方法
は，記録が磁気信号である以上は，磁気読取り装置によ
り読取りが可能であり，偽造を完全に防止することは不
可能であった。However, the above-described method using a magnetic barcode, complicating the waveform of a recorded recording signal, and recording a recording signal using a modulated wave, are based on a magnetic signal recording. Above a certain point, it was possible to read by a magnetic reader, and it was impossible to completely prevent forgery.
【０００６】そこで，本発明の技術的課題は，偽造防止
効果が高められ，かつ容易に行うことができるカード真
偽判別方法及び装置を提供することにある。Accordingly, it is an object of the present invention to provide a method and an apparatus for discriminating the authenticity of a card which can enhance the effect of preventing forgery and which can be easily performed.
【０００７】[0007]
【課題を解決するための手段】本発明によれば，少なく
とも一面の一部または全部に印刷または塗布された平均
粒径０．０１〜１０μｍのＴｂ 2 Ｏ 3 ，Ｄｙ 2 Ｏ 3 ，Ｅ
ｕ 2 Ｏ 3 ，ＹＶＯ 4 ，Ｙ 2 ＳｉＯ 3 ，Ｔｂ 4 Ｏ 7 の希土
類元素化合物の蛍光発色材料のうちから選択された少な
くとも一種を含み，４００ｎｍ以下の波長を有する紫外
光を吸収して，可視光を発光する蛍光発色材の層を有す
るカードの前記蛍光発色材層の光吸収量に応じて前記カ
ードの真偽を判別することを特徴とするカード真偽判別
方法が得られる。According to the present invention, an average printed or coated on at least a part or all of one surface is provided.
Tb 2 O 3 , Dy 2 O 3 , E having a particle size of 0.01 to 10 μm
u 2 O 3, YVO 4, rare earth of Y 2 SiO 3, Tb 4 O 7
Selected from among the fluorescent coloring materials of
UV, including at least one kind, having a wavelength of 400 nm or less
A card authenticity discriminating method for discriminating the authenticity of a card having a layer of a fluorescent coloring material that emits visible light by absorbing light according to the amount of light absorbed by the fluorescent coloring material layer. Is obtained.
【０００８】ここで，本発明のカード真偽判別方法にお
いて，前記カードは磁気記録層を備え，前記光吸収量
は，前記磁気記録層に記録された情報に基づいて設定さ
れた設定値と比較され，この比較結果に基づいて，前記
カードの真偽を判別することが好ましい。Here, in the card authenticity discrimination method of the present invention, the card has a magnetic recording layer, and the light absorption amount is compared with a set value set based on information recorded on the magnetic recording layer. Preferably, the authenticity of the card is determined based on the comparison result.
【０００９】また，本発明によれば，少なくとも一面の
一部または全部に印刷または塗布された平均粒径０．０
１〜１０μｍのＴｂ 2 Ｏ 3 ，Ｄｙ 2 Ｏ 3 ，Ｅｕ 2 Ｏ 3 ，
ＹＶＯ 4 ，Ｙ 2 ＳｉＯ 3 ，Ｔｂ 4 Ｏ 7 の希土類元素化合
物の蛍光発色材料のうちから選択された少なくとも一種
を含み，４００ｎｍ以下の波長を有する紫外光を吸収し
て，可視光を発光する蛍光発色材の層を有するカードの
前記蛍光発色材層に光を入射させ，前記蛍光発色材層か
らの反射光を受けて前記蛍光発色材層の光吸収量を測定
する光吸収量測定手段と，前記光吸収量を予め定められ
た設定値と比較し，比較結果に基づいて前記カードの真
偽を判定する吸収判定手段とを備えていることを特徴と
するカード真偽判別装置が得られる。Further, according to the present invention, an average particle diameter of 0.0 printed or coated on at least a part or all of one surface is provided.
Tb 2 O 3 , Dy 2 O 3 , Eu 2 O 3 ,
Rare earth element compound of YVO 4 , Y 2 SiO 3 , Tb 4 O 7
At least one selected from fluorescent fluorescent materials
And absorbs ultraviolet light having a wavelength of 400 nm or less.
Light is incident on the fluorescent coloring material layer of the card having a fluorescent coloring material layer that emits visible light, and the amount of light absorbed by the fluorescent coloring material layer is measured by receiving the reflected light from the fluorescent coloring material layer. A light absorption amount measuring means for comparing the light absorption amount with a predetermined set value and determining the authenticity of the card based on the comparison result. An authenticity determination device is obtained.
【００１０】[0010]
【００１１】また，本発明のカード真偽判別装置におい
て，前記カードは，情報を記録した磁気記録層を備え，
前記設定値を前記情報に基づいて設定する基準値設定手
段を備えていることが好ましい。In the card authenticity discriminating apparatus of the present invention, the card includes a magnetic recording layer on which information is recorded,
Preferably, a reference value setting means for setting the set value based on the information is provided.
【００１２】即ち，本発明に用いるＥｕ2 Ｏ3 ，Ｔｂ4
Ｏ7 ，Ｄｙ2 Ｏ3 ，Ｙ2 ＳｉＯ3 ，Ｔｂ2 Ｏ3 等の希土
類元素化合物は，一般に入手が非常に難しいため，これ
らの元素化合物のうち少なくとも一種を磁気カード上に
印刷又は塗布し，発光素子及び受光素子を備えたセンサ
ーにより蛍光発色材料の層でされた光の吸収損失を判定
することによって，真偽を判別することができるので，
偽造に役立つものである。That is, Eu 2 O 3 , Tb 4 used in the present invention.
Rare earth element compounds such as O 7 , Dy 2 O 3 , Y 2 SiO 3 and Tb 2 O 3 are generally very difficult to obtain, so at least one of these element compounds is printed or coated on a magnetic card, By determining the absorption loss of the light generated in the layer of the fluorescent coloring material by the sensor having the light emitting element and the light receiving element, the authenticity can be determined.
It is useful for counterfeiting.
【００１３】尚，本発明においては，カードとは，磁気
カード，ＩＣカードその他のカードのいずれでも良く，
従って，カードの基材は紙，プラスチックス，セラミッ
クス，金属等の蛍光発色材を少なくとも一面の一部又は
全部に塗布可能な基材であれば，いずれでも良く，材質
には限定されない。In the present invention, the card may be any of a magnetic card, an IC card and other cards.
Therefore, the substrate of the card may be any substrate as long as it can apply a fluorescent coloring material such as paper, plastics, ceramics, metal or the like to at least a part or all of one surface, and the material is not limited.
【００１４】[0014]
【作用】本発明のカード真偽判別方法においては，塗布
または印刷された蛍光発色材の層に紫外線又はこの材料
の吸収波長の光を照射して，この吸収波長の光の吸収量
が所定値であるとき真正カードを判断し，所定値からず
れると偽のカードと判断することにより，カードの真偽
を判別することができる。In the card authenticity discrimination method of the present invention, the layer of the fluorescent coloring material coated or printed is irradiated with ultraviolet light or light having an absorption wavelength of this material, and the amount of light absorbed at this absorption wavelength is set to a predetermined value. , The authenticity of the card can be determined by judging the authentic card and judging it as a fake card if it deviates from a predetermined value.
【００１５】[0015]
【実施例】本発明の実施例を図面を参照して説明する。An embodiment of the present invention will be described with reference to the drawings.
【００１６】図１は本発明の実施例に係る磁気カード１
の蛍光発色部の印刷前の一面を示す図，図２は図１の磁
気カード１の印刷後の蛍光発色部２の印刷後の一面を示
す図である。FIG. 1 shows a magnetic card 1 according to an embodiment of the present invention.
2 is a diagram showing one surface of the fluorescent coloring portion before printing, and FIG. 2 is a diagram showing one surface of the fluorescent coloring portion 2 after printing of the magnetic card 1 in FIG.
【００１７】図１に示すような磁気カードの一面に，Ｙ
ＶＯ4 の粉末を顔料とするインキを図２に示すように，
厚さ３〜５μｍの帯状に印刷して蛍光発色材の層２を形
成した。On one side of the magnetic card as shown in FIG.
As shown in FIG. 2, an ink using VO 4 powder as a pigment is shown in FIG.
Printing was performed in a band shape having a thickness of 3 to 5 μm to form a layer 2 of a fluorescent coloring material.
【００１８】使用したインキの組成は，下記表１の通り
である。The composition of the ink used is shown in Table 1 below.
【００１９】[0019]
【表１】 [Table 1]
【００２０】このような構成の磁気カードは，磁気カー
ドに予め備わった使用度数等の磁気記録情報に対応して
蛍光発色材の層２の材質を選択されている。In the magnetic card having such a configuration, the material of the layer 2 of the fluorescent coloring material is selected in accordance with magnetic recording information such as the frequency of use provided in the magnetic card in advance.
【００２１】図３は図１及び図２の磁気カードの真偽判
別を行う装置の構成を示す概略図である。FIG. 3 is a schematic diagram showing the configuration of an apparatus for determining whether the magnetic card shown in FIGS. 1 and 2 is authentic.
【００２２】図３において，真偽判別装置は磁気記録読
取り装置３０，発光素子３１，受光素子３２，差動増幅
器３３，吸収判定部３４，及び基準値設定部３５とを備
えている。発光素子３１，受光素子３２，差動増幅器３
３，はカードの蛍光発色材層に光を入射させ，この蛍光
発色材層からの反射光を受けて蛍光発色材層の光吸収量
を測定する光吸収量測定手段として作用する。吸収判定
部３４は吸収判定手段として作用する。また，磁気記録
読取り装置３０及び基準値設定部３５とによって基準値
設定手段として作用する。In FIG. 3, the authenticity discriminating apparatus includes a magnetic recording / reading device 30, a light emitting element 31, a light receiving element 32, a differential amplifier 33, an absorption judging section 34, and a reference value setting section 35. Light emitting element 31, light receiving element 32, differential amplifier 3
Reference numeral 3 designates light incident on the fluorescent coloring material layer of the card, receives reflected light from the fluorescent coloring material layer, and acts as a light absorption measuring means for measuring the light absorption of the fluorescent coloring material layer. The absorption determination section 34 functions as absorption determination means. Further, the magnetic recording / reading device 30 and the reference value setting unit 35 function as reference value setting means.
【００２３】磁気カードリーダに図３の装置が組み込ま
れた場合において，磁気カード１に予め備えられたカー
ド種別等の磁気記録情報は，磁気記録読取装置３０によ
って，読み取られ，図においては右方の予め定められた
位置に移動する。When the device shown in FIG. 3 is incorporated in a magnetic card reader, magnetic recording information such as a card type provided in advance on the magnetic card 1 is read by a magnetic recording / reading device 30, and in FIG. To a predetermined position.
【００２４】磁気カード１は，異なる種類のカードには
異なる吸収波長を有する蛍光発色材の層２が形成されて
いる。In the magnetic card 1, different types of cards are formed with a fluorescent coloring material layer 2 having a different absorption wavelength.
【００２５】発光素子から特定波長の紫外線が磁気カー
ドに入射され，蛍光発色材の層２により，特定波長の光
が吸収され，反射された蛍光発色材の層２からの放射光
を含む反射光は，光フィルター３２ａにより，特定領域
のみの波長が選択され，受光素子３２に入射する。[0025] ultraviolet having a specific wavelength from the light emitting element is incident on the magnetic card by a layer 2 of fluorescent material, light of a specific wavelength is absorbed, light emitted from the layer 2 of the reflected fluorescent material
Is reflected by the optical filter 32a to select a wavelength only in a specific region, and enters the light receiving element 32.
【００２６】受光素子３２は，入射する特定波長の光の
強度に応じた電気信号ｆＢを出力する。The light receiving element 32 outputs an electric signal fB corresponding to the intensity of the incident light of a specific wavelength.
【００２７】差動増幅器３３は，発光素子の光の強度に
応じた大きさの出力信号ｆＡの強度と電気信号ｆＢのの
大きさとの差に応じた大きさの電気信号ｆｄを出力す
る。吸収判定部３４は，予め基準値設定部３５によって
設定された基準値ｆｒと，差動増幅器３３からの出力値
ｆｃが一致した場合において，一致信号ｆｅを出力し，
不一致の場合に不一致信号ｆｎを出力する。The differential amplifier 33 outputs an electric signal fd having a magnitude corresponding to a difference between the intensity of the output signal fA having a magnitude corresponding to the intensity of light from the light emitting element and the magnitude of the electric signal fB. The absorption determination unit 34 outputs a match signal fe when the reference value fr set in advance by the reference value setting unit 35 matches the output value fc from the differential amplifier 33,
When there is a mismatch, a mismatch signal fn is output.
【００２８】ここで，前述の磁気記録読取り装置３０に
よって，読み取られたカード種別を示す信号ｆｓは基準
値設定部３５に入力され，カードの種類に応じた，即
ち，それぞれ用いた蛍光発色材の層の吸収量に応じた基
準値（例えば，“１”，“２”）からｆｓに応じて選択
された信号ｆｒが吸収判定部３５に出力される。この基
準値“１”，“２”等は，予め定められた特定領域のみ
の光を吸収する蛍光発色材の層２を用いることにより，
作動増幅器３３から出力される信号ｆｄの大きさとなる
ように設定されている。Here, the signal fs indicating the card type read by the magnetic recording / reading device 30 is input to the reference value setting unit 35, and the signal fs according to the type of the card, that is, the fluorescent coloring material used, is used. A signal fr selected according to fs from a reference value (for example, “1”, “2”) according to the absorption amount of the layer is output to the absorption determination unit 35. The reference values “1” and “2” are determined by using a layer 2 of a fluorescent coloring material that absorbs light only in a predetermined specific region.
The signal fd output from the operational amplifier 33 is set to have the magnitude.
【００２９】一致信号ｆｅ又は不一致信号ｆｎにより，
例えば，図示しない警報装置等の真偽判定装置を駆動す
ることになる。With the coincidence signal fe or the non-coincidence signal fn,
For example, a true / false determination device such as an alarm device (not shown) is driven.
【００３０】一例として，３２０〜３３０ｎｍの紫外波
長の発光素子３１により，図２に示す磁気カードの蛍光
発色材の層２に光を照射し，その反射光を受光素子３２
により受光した。As an example, a light emitting element 31 having an ultraviolet wavelength of 320 to 330 nm irradiates light to the fluorescent coloring material layer 2 of the magnetic card shown in FIG.
And received light.
【００３１】インキ中に含まれるＹＶＯ4 は紫外波長３
２０〜３３０ｎｍの光を当てるとこの波長の光が吸収さ
れ，波長６０６ｎｍを有する光を発光し，図３の装置に
より，この光の吸収を感知することができた。このよう
に本発明のカード真偽判別方法及びカード真偽判別装置
によれば，カードの一面の一部又は全部に印刷又は塗布
された蛍光発色材の層を有し，この層による吸収波長の
強度（吸収量）を判定することで，カードの真偽判定が
可能である。例えば，偽造磁気カードは，蛍光発色材の
有無により真偽判定可能である。また，蛍光発色材の層
を有するものであっても，蛍光発色材の層の特定波長の
光の吸収量によって，真偽判別が可能である。さらに，
磁気カードの磁気記録層の磁気記録データと蛍光発色材
の層の吸収量及び吸収波長と対比させて作成することに
よって，磁気記録データと吸収量及び吸収波長とが対応
しない場合，偽造磁気カードであることがわかる。例え
ば，プリペードカードにおいては，磁気記録層に記録さ
れた使用可能度数に応じた特定波長の光の吸収量及び吸
収波長を備えた蛍光発色材の層を作成することによっ
て，磁気記録データの書き換えによる使用可能度数の増
加等を防止することができる。 YVO 4 contained in the ink has an ultraviolet wavelength of 3
When light of 20 to 330 nm was applied, light of this wavelength was absorbed, and light having a wavelength of 606 nm was emitted, and the absorption of this light could be sensed by the apparatus of FIG. like this
Patent application title: Card authenticity determining method and card authenticity determining apparatus of the present invention
According to, printing or coating on part or all of one side of the card
With a layer of fluorescent coloring material
By determining the strength (absorption amount), the authenticity of the card can be determined.
It is possible. For example, counterfeit magnetic cards are made of fluorescent coloring materials.
True / false judgment can be made depending on the presence or absence. Also, a layer of fluorescent coloring material
Even if it has
It is possible to determine the authenticity based on the amount of light absorbed. further,
Magnetic recording data and fluorescent coloring material of magnetic recording layer of magnetic card
In comparison with the absorption amount and absorption wavelength of the layer
Therefore, the magnetic recording data corresponds to the absorption amount and absorption wavelength.
If not, it is known that the card is a forged magnetic card. example
For example, in a prepaid card, the
Absorption and absorption of light of a specific wavelength in accordance with the
By creating a layer of fluorescent colorant with a collection wavelength
Increase the usable frequency by rewriting magnetic recording data.
Addition can be prevented.
【００３２】以上のように，磁気カード１の真偽を判別
し，偽造を防止することができる。As described above, the authenticity of the magnetic card 1 can be determined to prevent forgery.
【００３３】[0033]
【発明の効果】以上の説明から明らかなように，本発明
によれば，一面の一部または全部に印刷または塗布され
た蛍光発色材の層を有し，この層による吸収波長の強度
を判定することでカードの真偽判定が可能であり，高度
の安全性を持ったカード真偽判定方法及び装置の提供が
可能になった。As is apparent from the above description, according to the present invention, a layer of a fluorescent coloring material printed or coated on part or all of one surface is provided, and the intensity of the absorption wavelength by this layer is determined. This makes it possible to judge the authenticity of the card, and to provide a method and an apparatus for authenticating the authenticity of the card with a high degree of security.
【図１】本発明の実施例に係る磁気カードの蛍光発色部
の印刷前の一面を示す図である。FIG. 1 is a diagram showing one surface of a fluorescent card of a magnetic card according to an embodiment of the present invention before printing.
【図２】図１の磁気カードの蛍光発色部の印刷後の一面
を示す図である。FIG. 2 is a diagram showing one surface of the magnetic card shown in FIG. 1 after printing a fluorescent coloring portion.
【図３】図１及び図２の磁気カードの真偽判別を行う装
置の構成を示す概略図である。FIG. 3 is a schematic diagram showing a configuration of an apparatus for determining whether the magnetic card shown in FIGS. 1 and 2 is authentic.
１ 磁気カード ２ 蛍光発色材の層 ３０ 磁気記録読取装置 ３１ 発光素子 ３２ 受光素子 ３２ａ 光フィルター ３３ 差動増幅器 ３４ 吸収判定部 ３５ 基準値設定部 Reference Signs List 1 magnetic card 2 layer of fluorescent coloring material 30 magnetic recording / reading device 31 light emitting element 32 light receiving element 32a optical filter 33 differential amplifier 34 absorption determination unit 35 reference value setting unit
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｇ０６Ｋ 19/10 Ｇ１１Ｂ 5/80 Ｇ１１Ｂ 5/80 Ｇ０６Ｋ 19/00 Ｒ (56)参考文献 特開 平１−110198（ＪＰ，Ａ) 特開 昭62−93752（ＪＰ，Ａ) 実開 昭58−145770（ＪＰ，Ｕ) 実開 昭54−143198（ＪＰ，Ｕ) 実開 昭60−85977（ＪＰ，Ｕ) 実用新案登録2540441（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.6，ＤＢ名) G07F 5/00 - 9/10 B42D 15/10 501 G03C 1/725 G06K 7/12 G06K 17/00 G06K 19/10 G11B 5/80 G07D 7/00 ──────────────────────────────────────────────────の Continuation of front page (51) Int.Cl. 6 Identification symbol FI G06K 19/10 G11B 5/80 G11B 5/80 G06K 19/00 R (56) References JP-A-1-110198 (JP, A JP-A-62-93752 (JP, A) JP-A-58-145770 (JP, U) JP-A-54-143198 (JP, U) JP-A-60-85977 (JP, U) Utility model registration 2540441 (JP, U) JP, Y2) (58) Fields studied (Int. Cl. 6 , DB name) G07F 5/00-9/10 B42D 15/10 501 G03C 1/725 G06K 7/12 G06K 17/00 G06K 19/10 G11B 5/80 G07D 7/00
Claims (4)
または塗布された平均粒径０．０１〜１０μｍのＴｂ 2
Ｏ 3 ，Ｄｙ 2 Ｏ 3 ，Ｅｕ 2 Ｏ 3 ，ＹＶＯ 4 ，Ｙ 2 ＳｉＯ
3 ，Ｔｂ 4 Ｏ 7 の希土類元素化合物の蛍光発色材料のう
ちから選択された少なくとも一種を含み，４００ｎｍ以
下の波長を有する紫外光を吸収して，可視光を発光する
蛍光発色材の層を有するカードの前記蛍光発色材の層の
光吸収量に応じて前記カードの真偽を判別することを特
徴とするカード真偽判別方法。1. Tb 2 having an average particle size of 0.01 to 10 μm printed or coated on at least a part or all of one surface.
O 3 , Dy 2 O 3 , Eu 2 O 3 , YVO 4 , Y 2 SiO
3, fluorescent materials of the rare earth element compound of Tb 4 O 7
Including at least one selected from the
By absorbing ultraviolet light having a wavelength below, determine the authenticity of the card according to the light absorption amount of the layer of the fluorescent material of the card having a layer of <br/> fluorescent material that emits visible light A card authenticity discriminating method.
いて，前記カードは磁気記録層を備え，前記光吸収量
は，前記磁気記録層に記録された情報に基づいて設定さ
れた設定値と比較され，この比較結果に基づいて，前記
カードの真偽を判別することを特徴とするカード真偽判
別方法。2. The card authenticity discrimination method according to claim 1, wherein the card has a magnetic recording layer, and the amount of light absorption is different from a set value set based on information recorded on the magnetic recording layer. A card authenticity discriminating method, wherein the card is compared and the authenticity of the card is judged based on the comparison result.
または塗布された平均粒径０．０１〜１０μｍのＴｂ 2
Ｏ 3 ，Ｄｙ 2 Ｏ 3 ，Ｅｕ 2 Ｏ 3 ，ＹＶＯ 4 ，Ｙ 2 ＳｉＯ
3 ，Ｔｂ 4 Ｏ 7 の希土類元素化合物の蛍光発色材料のう
ちから選択された少なくとも一種を含み，４００ｎｍ以
下の波長を有する紫外光を吸収して，可視光を発光する
蛍光発色材の層を有するカードの前記蛍光発色材層に光
を入射させ，前記蛍光発色材層からの反射光を受けて前
記蛍光発色材層の光吸収量を測定する光吸収量測定手段
と，前記光吸収量を予め定められた設定値と比較し，比
較結果に基づいて前記カードの真偽を判定する吸収判定
手段とを備えていることを特徴とするカード真偽判別装
置。3. Tb 2 having an average particle size of 0.01 to 10 μm printed or coated on at least a part or all of one surface.
O 3 , Dy 2 O 3 , Eu 2 O 3 , YVO 4 , Y 2 SiO
3, fluorescent materials of the rare earth element compound of Tb 4 O 7
Including at least one selected from the
The card absorbs ultraviolet light having the following wavelengths and emits visible light. Light is incident on the fluorescent coloring material layer of the card having the fluorescent coloring material layer, and reflected light from the fluorescent coloring material layer. Light absorption amount measuring means for measuring the light absorption amount of the fluorescent coloring material layer upon receiving the light absorption amount, comparing the light absorption amount with a predetermined set value, and judging the authenticity of the card based on the comparison result. A card authenticity discriminating device comprising an absorption judging means.
いて，前記カードは，情報を記録した磁気記録層を備
え，前記設定値を前記情報に基づいて設定する基準値設
定手段を備えていることを特徴とするカード真偽判別装
置。4. The card authenticity discriminating apparatus according to claim 3 , wherein said card includes a magnetic recording layer on which information is recorded, and reference value setting means for setting said set value based on said information. A card authenticity discriminating device characterized by the above-mentioned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6242754A JP2916991B2 (en) | 1994-10-06 | 1994-10-06 | Card authenticity determination method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6242754A JP2916991B2 (en) | 1994-10-06 | 1994-10-06 | Card authenticity determination method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07225866A JPH07225866A (en) | 1995-08-22 |
| JP2916991B2 true JP2916991B2 (en) | 1999-07-05 |
Family
ID=17093774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6242754A Expired - Fee Related JP2916991B2 (en) | 1994-10-06 | 1994-10-06 | Card authenticity determination method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2916991B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533749A4 (en) * | 2002-07-01 | 2005-09-21 | Shinya Fukui | Material containing coding information, method of identification thereof and identification system therefor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2540441Y2 (en) | 1990-05-15 | 1997-07-02 | 株式会社 トーキン | Magnetic card with authenticity determination means |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6293752A (en) * | 1985-10-18 | 1987-04-30 | Omron Tateisi Electronics Co | Card truth discriminating device |
| JPH01110198A (en) * | 1987-10-23 | 1989-04-26 | Tokyo Cosmos Electric Co Ltd | Prepaid card |
-
1994
- 1994-10-06 JP JP6242754A patent/JP2916991B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2540441Y2 (en) | 1990-05-15 | 1997-07-02 | 株式会社 トーキン | Magnetic card with authenticity determination means |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07225866A (en) | 1995-08-22 |
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