JP3009546B2 - Method for detecting optical information and magnetic information of a detected object - Google Patents
Method for detecting optical information and magnetic information of a detected objectInfo
- Publication number
- JP3009546B2 JP3009546B2 JP4224777A JP22477792A JP3009546B2 JP 3009546 B2 JP3009546 B2 JP 3009546B2 JP 4224777 A JP4224777 A JP 4224777A JP 22477792 A JP22477792 A JP 22477792A JP 3009546 B2 JP3009546 B2 JP 3009546B2
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- Prior art keywords
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- information
- optical
- detected
- signal
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- 230000003287 optical effect Effects 0.000 title claims description 93
- 238000000034 method Methods 0.000 title claims description 20
- 238000001514 detection method Methods 0.000 claims description 57
- 239000002131 composite material Substances 0.000 claims description 10
- 239000000696 magnetic material Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 11
- 230000007423 decrease Effects 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Description
【０００１】[0001]
【産業上の利用分野】本発明の被検出体の光学情報及び
磁気情報検出方法は、紙幣、証券等の印刷物に表示され
ている光学情報と磁気情報とを光学的及び磁気的に検出
するものであり、印刷物の真偽を判別するのに利用され
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for detecting optical information and magnetic information of an object to be detected, which optically and magnetically detects optical information and magnetic information displayed on printed matter such as bills and securities. This is used to determine the authenticity of the printed matter.
【０００２】[0002]
【従来の技術】図９に示す様に被検出体Ａに磁性インク
によって印刷されている文字や図形等の磁気情報Ｂを検
出する場合、従来は被検出体Ａの摺動面Ｃ（表面）を磁
気ヘッドＤに摺動させながら矢印Ｘ方向に搬送させ、同
磁気ヘッドＤのトラック幅内の磁気量を搬送方向に検出
して、その摺動面Ｃの磁気情報Ｂをパターン認識してい
る。2. Description of the Related Art As shown in FIG. 9, when detecting magnetic information B such as characters and graphics printed on a detection object A with magnetic ink, conventionally, a sliding surface C (front surface) of the detection object A is used. Is conveyed in the direction of arrow X while sliding the magnetic head D, the amount of magnetism within the track width of the magnetic head D is detected in the conveying direction, and the magnetic information B on the sliding surface C is pattern-recognized. .
【０００３】前記検出において磁気ヘッドＤのギャップ
幅を狭くすると分解能は向上するが出力が小さくなり、
逆にギャップ幅を広くすると分解能は低下するが出力が
大きくなる。このためギャップ幅は被検出物Ａの磁気
量、磁気情報Ｂの細かさや検出に要求される分解能等に
より適宜設定する必要がある。In the above detection, when the gap width of the magnetic head D is reduced, the resolution is improved, but the output is reduced.
Conversely, when the gap width is widened, the resolution decreases but the output increases. For this reason, it is necessary to appropriately set the gap width depending on the amount of magnetism of the object A, the fineness of the magnetic information B, the resolution required for detection, and the like.
【０００４】また、当社では先に、磁気情報と光学情報
とを磁気ヘッドと光学ヘッドの同じ範囲（トラック幅×
ギャップ幅）で検出可能な磁気・光学複合ヘッドを開発
した。これは被検出体Ａの摺動面Ｃにおける磁気情報Ｂ
を磁気ヘッドＤで検出すると共に、同摺動面Ｃにおける
光学情報（例えば白紙の箇所）Ｅからの反射光（反射
型）或は同箇所Ｅの透過光（透過型）をパターン認識で
きるようにしたものである。[0004] In addition, our company previously described magnetic information and optical information in the same area (track width x track width) of the magnetic head and the optical head.
We have developed a magnetic / optical combined head that can detect the gap width. This is the magnetic information B on the sliding surface C of the detection object A.
Is detected by the magnetic head D, and the light reflected (reflection type) from the optical information (for example, a blank portion) E on the sliding surface C or the light transmitted (transmission type) at the same position E can be pattern-recognized. It was done.
【０００５】[0005]
【発明が解決しようとする課題】しかし、従来の磁気ヘ
ッドによる磁気情報検出方法では、被検出体Ａを磁性ト
ナーを含んだ複写機によりコピーした場合、そのコピー
したもの（偽物）と磁性インクによって印刷された真正
なものとの判別能力が低下するという難点があった。ま
た当社で開発した前記の磁気・光学複合ヘッドによる磁
気情報検出でも、カラーコピーで偽造された場合は同様
に判別能力が低下するという問題があった。このためい
ずれの場合もセキュリティーの面で問題があった。However, in the conventional method for detecting magnetic information using a magnetic head, when the object to be detected A is copied by a copying machine containing magnetic toner, the copy (fake) and the magnetic ink are used. There is a problem that the ability to discriminate a printed genuine article is reduced. Also, in the magnetic information detection by the above-described combined magnetic / optical head developed by our company, there is a problem that the discrimination ability is similarly reduced when forged by color copying. Therefore, in each case, there was a problem in security.
【０００６】本発明の目的は、磁性インクにより磁気情
報を紙葉等に印刷した真正な被検出体と、それを磁性ト
ナーを含んだ複写機によりコピーした偽物とを確実に判
別できるようにすることにある。SUMMARY OF THE INVENTION It is an object of the present invention to make it possible to reliably discriminate a genuine object on which magnetic information is printed on a paper sheet or the like by using magnetic ink and a fake object obtained by copying the genuine object by a copying machine containing magnetic toner. It is in.
【０００７】[0007]
【課題を解決するための手段】本発明のうち請求項１の
被検出体の光学情報及び磁気情報検出方法は、図２、図
５に示す様に、光学情報１及び磁性体による磁気情報２
が記録されている被検出体３と光・磁気複合センサー４
とを相対的に摺動させて、同複合センサー４により被検
出体３の磁気情報２から磁気信号を、光学情報１から光
信号を得て、被検出体３から光学情報１及び磁気情報２
を検出する方法において、図３、図４、図６、図７のよ
うに光信号は被検出体３の摺動面５から得、磁気信号は
同摺動面５及びその裏面６から得るようにしたものであ
る。According to the present invention, the method for detecting optical information and magnetic information of an object to be detected according to the first aspect of the present invention is, as shown in FIGS.
Object 3 and optical / magnetic composite sensor 4 on which is recorded
Are relatively slid, the composite sensor 4 obtains a magnetic signal from the magnetic information 2 of the object 3 and an optical signal from the optical information 1, and obtains the optical information 1 and the magnetic information 2 from the object 3.
3, 4, 6, and 7, the optical signal is obtained from the sliding surface 5 of the detection target 3, and the magnetic signal is obtained from the sliding surface 5 and the back surface 6 thereof, as shown in FIGS. It was made.
【０００８】本発明のうち請求項２の被検出体の光学情
報及び磁気情報検出方法は、請求項１の被検出体の光学
情報及び磁気情報検出方法により検出される光信号及び
磁気信号に、それとは別に被検出体３の摺動面５の光学
情報１及び磁気情報２から検出した光信号及び磁気信号
を組合わせるようにしたものである。According to a second aspect of the present invention, there is provided a method for detecting optical information and magnetic information of an object to be detected, comprising the steps of: Apart from that, the optical signal and the magnetic signal detected from the optical information 1 and the magnetic information 2 on the sliding surface 5 of the detection object 3 are combined.
【０００９】請求項１の被検出体の光学情報及び磁気情
報検出方法により検出される光信号及び磁気信号に、そ
れとは別に被検出体３の摺動面５とその裏面との両面の
光学情報１から検出した光信号と、同摺動面５の磁気情
報２だけから検出した磁気信号とを組合わせるようにし
たものである。The optical signal and the magnetic signal detected by the method for detecting the optical information and the magnetic information of the object to be detected according to the first aspect of the present invention separately include the optical information on both the sliding surface 5 of the object to be detected 3 and the back surface thereof. 1 is combined with a magnetic signal detected from only the magnetic information 2 on the sliding surface 5.
【００１０】[0010]
【作用】本発明のうち請求項１の被検出体の光学情報及
び磁気情報検出方法は、被検出体３の磁気情報２を磁気
信号として、光学情報１を光信号として検出し、しかも
光信号は被検出体３の摺動面５のみから得、磁気信号は
被検出体３の摺動面５だけでなく裏面６からも得るの
で、両面からの検出信号を組合わせることにより磁気情
報２を正確に検出でき、被検出体３の真偽を正確に判別
することができる。According to the first aspect of the present invention, there is provided a method for detecting optical information and magnetic information of an object to be detected, wherein the magnetic information 2 of the object to be detected is detected as a magnetic signal and the optical information 1 is detected as an optical signal. Is obtained only from the sliding surface 5 of the object 3 and the magnetic signal is obtained not only from the sliding surface 5 but also from the back surface 6 of the object 3. Therefore, the magnetic information 2 is obtained by combining the detection signals from both surfaces. The detection can be performed accurately, and the authenticity of the detection target 3 can be accurately determined.
【００１１】本発明のうち請求項２の被検出体の光学情
報及び磁気情報検出方法は、請求項１の被検出体の光学
情報及び磁気情報検出方法により検出される光信号及び
磁気信号に、それとは別に被検出体３の摺動面５の光学
情報１及び磁気情報２から検出した光信号及び磁気信号
を組合わせるので、検出データが請求項１の場合よりも
豊富になり、被検出体３の真偽をより一層正確に判別す
ることができる。According to a second aspect of the present invention, there is provided a method for detecting optical information and magnetic information of an object to be detected, comprising the steps of: In addition, since the optical signal and the magnetic signal detected from the optical information 1 and the magnetic information 2 on the sliding surface 5 of the detection object 3 are combined, the detection data becomes richer than in the case of claim 1, and the detection object 3 can be more accurately determined.
【００１２】本発明のうち請求項３の被検出体の光学情
報及び磁気情報検出方法は、請求項１の被検出体の光学
情報及び磁気情報検出方法により検出される光信号及び
磁気信号に、それとは別に被検出体３の摺動面５とその
裏面との両面の光学情報１から検出した光信号と、同摺
動面５の磁気情報２だけから検出した磁気信号とを組合
わせるので、請求項２の場合よりもより一層検出データ
が豊富になり、被検出体３の真偽を更に正確に判別する
ことができる。According to a third aspect of the present invention, there is provided a method for detecting optical information and magnetic information of an object to be detected, comprising the steps of: Apart from that, the optical signal detected from the optical information 1 on both sides of the sliding surface 5 and the back surface of the detection object 3 and the magnetic signal detected from only the magnetic information 2 on the sliding surface 5 are combined. The detection data becomes more abundant than in the case of claim 2, and the authenticity of the detection target 3 can be more accurately determined.
【００１３】[0013]
【実施例１】本発明を図２〜図４に示す実施例に基づい
て詳細に説明する。図１に示す被検出体３は摺動面（表
面）５の上半分を表面上方セクション１１、下半分を表
面下方セクション１２とし、摺動面５と反対の裏面６の
うち表面上方セクション１１の裏側を裏面上方セクショ
ン１３、表面下方セクション１２の裏側を裏面下方セク
ション１４とし、夫々のセクション１１〜１４に磁気情
報２が磁性インクにより斜線で示すパターンで表示され
ているものである。Embodiment 1 The present invention will be described in detail based on an embodiment shown in FIGS. 1, the upper half of the sliding surface (surface) 5 is an upper surface section 11, the lower half is a lower surface section 12, and the upper surface 11 of the rear surface 6 opposite to the sliding surface 5 has a lower surface. The back side is a back upper section 13 and the back side of the front lower section 12 is a back lower section 14. The magnetic information 2 is displayed in each of the sections 11 to 14 by magnetic ink in a pattern indicated by oblique lines.
【００１４】図２に示す被検出体３の磁気情報２を検出
するには、例えば光・磁気複合センサー４を複数個用意
し、そのうち一部の光・磁気複合センサー４のギャップ
長を摺動面５の磁気情報２を検出できる程度の長さ（短
め）にし、他の光・磁気複合センサー４のギャップ長を
摺動面５の磁気情報２とその裏面６の磁気情報２とを検
出できる長さ（長め）にする。ギャップ長を長くすると
分解能は低下するため、このギャップ長は磁性体の特
性、被検出体３の磁性インク及び被検出体３の厚さ等に
基づいて適宜設定する。しかもこの光・磁気複合センサ
ー４を被検出体３の摺動面５のうち磁気情報を最も効率
良く検出可能な位置に配置するのが望ましい。In order to detect the magnetic information 2 of the object 3 shown in FIG. 2, for example, a plurality of combined optical / magnetic sensors 4 are prepared, and the gap length of some of the combined optical / magnetic sensors 4 is slid. The length of the magnetic information 2 on the surface 5 is made short (shorter) so that the magnetic information 2 on the sliding surface 5 and the magnetic information 2 on the back surface 6 of the sliding surface 5 can be detected. Make it longer (longer). Since the resolution decreases as the gap length increases, the gap length is appropriately set based on the characteristics of the magnetic material, the magnetic ink of the detection target 3, the thickness of the detection target 3, and the like. Moreover, it is desirable that the combined optical / magnetic sensor 4 is arranged at a position on the sliding surface 5 of the detection object 3 where magnetic information can be detected most efficiently.
【００１５】前記のように配置された光・磁気複合セン
サー４に被検出体３の摺動面５を摺動させながら被検出
体３を摺動させたとき、光・磁気複合センサー４により
検出される被検出体３の摺動面５の光信号と、摺動面５
及び裏面６の磁気信号は図３、４に示すようになる。こ
れらの信号波形は信号処理した後の簡略化した波形であ
り、磁気出力は視覚的に対比できるように積分波形とし
てある。When the object 3 is slid while the sliding surface 5 of the object 3 is slid on the combined optical / magnetic sensor 4 arranged as described above, detection is performed by the combined optical / magnetic sensor 4. The optical signal of the sliding surface 5 of the object 3
The magnetic signals on the back surface 6 are as shown in FIGS. These signal waveforms are simplified waveforms after signal processing, and the magnetic output is an integrated waveform so that it can be visually compared.
【００１６】図３（ａ）に示す出力波形は図２の表面上
方セクション１１の光信号波形である。この光信号は同
セクション１１のうち光学情報１（磁気情報２が表示さ
れていない部分）からの反射光が“１”、磁気情報２の
部分（反射光が小さい）が“０”のパルスになってい
る。The output waveform shown in FIG. 3A is the optical signal waveform of the upper section 11 of FIG. This optical signal is a pulse in which the reflected light from the optical information 1 (the portion where the magnetic information 2 is not displayed) in the section 11 is “1” and the portion of the magnetic information 2 (the reflected light is small) is “0”. Has become.
【００１７】図３（ｂ）に示す出力波形は図２の被検出
体３の摺動面５側から検出した表面上方セクション１１
と裏面上方セクション１３の磁気信号の和の信号であ
る。この磁気信号は両セクション１１、１３の磁気情報
２の部分で“１”、それ以外の箇所で“０”となってお
り、しかも、両磁気情報２の和の分だけ信号レベルが大
きくなっている。しかし、摺動面５側から検知した裏面
６の磁気信号レベルは摺動面５の磁気信号レベルよりも
小さいので、その和の磁気信号レベルは図３（ｂ）に破
線で示す摺動面５の磁気信号レベルの２倍ではなく、そ
れよりやや大きい程度のレべルとなっている。The output waveform shown in FIG. 3B is a section 11 above the surface detected from the sliding surface 5 side of the detection target 3 in FIG.
And the magnetic signal of the upper section 13 on the back side. This magnetic signal is "1" at the portion of the magnetic information 2 in both sections 11 and 13, and is "0" at other portions, and the signal level is increased by the sum of the two magnetic information 2. I have. However, since the magnetic signal level of the back surface 6 detected from the sliding surface 5 side is smaller than the magnetic signal level of the sliding surface 5, the sum of the magnetic signal levels is the sliding surface 5 indicated by a broken line in FIG. The magnetic signal level is not twice as high, but is slightly higher.
【００１８】図４（ａ）に示す出力波形は図２の被検出
体３の表面下方セクション１２の光信号波形である。こ
の光信号は同セクション１２のうち光学情報１（磁気情
報２が印刷されていない部分）からの反射光が“１”、
磁気情報２の部分（反射光が小さい）が“０”のパルス
になっている。The output waveform shown in FIG. 4A is an optical signal waveform of the lower surface section 12 of the detection target 3 in FIG. In this optical signal, the reflected light from the optical information 1 (the portion where the magnetic information 2 is not printed) in the section 12 is “1”,
The portion of the magnetic information 2 (the reflected light is small) is a pulse of “0”.
【００１９】図４（ｂ）に示す出力波形は図２の被検出
体３の摺動面５側から検出した表面下方セクション１２
と裏面下方セクション１４の磁気信号の和の信号であ
る。この磁気信号は両セクション１２、１４の磁気情報
２の部分で“１”、それ以外の箇所で“０”のパルスと
なっている。しかも、この場合、磁気情報２が裏面６に
しか表示されていない箇所では、摺動面５から検出して
いる分だけ信号レベルは低下するため、図４（ｂ）に破
線で示す裏面６から検出する場合の磁気信号レベルより
も小さくなっている。The output waveform shown in FIG. 4B is the lower surface section 12 detected from the sliding surface 5 side of the detection target 3 in FIG.
And the magnetic signal of the lower rear section 14. This magnetic signal is a pulse of “1” at the portion of the magnetic information 2 in both sections 12 and 14 and a pulse of “0” at other portions. Moreover, in this case, at a portion where the magnetic information 2 is displayed only on the back surface 6, the signal level is reduced by the amount detected from the sliding surface 5, and therefore, the position from the back surface 6 indicated by a broken line in FIG. It is smaller than the magnetic signal level for detection.
【００２０】本発明のうち請求項１の被検出体の光学情
報及び磁気情報検出方法では、図３（ａ）（ｂ）、図４
（ａ）（ｂ）に示す光信号及び磁気信号を組合わせて図
２に示す被検出体３の光学情報１及び磁気情報２のパタ
ーンを検出し、同被検出体３の真偽を判別する。In the method for detecting optical information and magnetic information of an object to be detected according to the first aspect of the present invention, FIGS.
(A) By combining the optical signal and the magnetic signal shown in (b), the pattern of the optical information 1 and the magnetic information 2 of the detection target 3 shown in FIG. 2 is detected, and the authenticity of the detection target 3 is determined. .
【００２１】図５に示す被検出体３は摺動面（表面）５
の上半分を表面上方セクション１１、下半分を表面下方
セクション１２とし、摺動面５と反対の裏面６のうち表
面上方セクション１１の裏側を裏面上方セクション１
３、表面下方セクション１２の裏側を裏面下方セクショ
ン１４とし、そのうち表面上方セクション１１には磁性
体を含まないインクで任意のパターン（鎖線で示す）２
０が表示され、それ以外のセクション１２〜１４には磁
性インクにより磁気情報２が斜線で示すパターンで表示
されているものである。The detection object 3 shown in FIG.
The upper half is the upper surface section 11, the lower half is the lower surface section 12, and the back side of the upper surface section 11 of the rear surface 6 opposite to the sliding surface 5 is the rear upper section 1.
3. The back side of the lower surface section 12 is referred to as a lower surface lower section 14, in which the upper surface section 11 has an arbitrary pattern (indicated by a dashed line) made of ink containing no magnetic substance.
0 is displayed, and the other sections 12 to 14 display magnetic information 2 in a pattern indicated by oblique lines by magnetic ink.
【００２２】図５の被検出体３の摺動面５を、裏面６の
磁気情報２をも検出可能な光・磁気複合センサーに沿っ
て摺動させた場合、その光・磁気複合センサーにより検
出される出力信号は図６（ａ）（ｂ）、図７（ａ）
（ｂ）に示すようになる。When the sliding surface 5 of the object 3 shown in FIG. 5 is slid along a combined optical / magnetic sensor capable of detecting the magnetic information 2 on the back surface 6, the detection is performed by the combined optical / magnetic sensor. 6 (a) and 6 (b) and FIG. 7 (a)
The result is as shown in FIG.
【００２３】図６（ａ）に示す出力波形は図５の被検出
体３の表面上方セクション１１の光信号波形である。こ
の表面上方セクション１１には磁性体を含まないインク
によりパターン２０が表示されているので、このセクシ
ョン１１の光信号は光学情報１（パターン２０が表示さ
れていない部分）からの反射光が“１”、パターン２０
の部分（反射光が小さい）が“０”のパルスになってい
る。The output waveform shown in FIG. 6A is the optical signal waveform of the section 11 above the surface of the object 3 shown in FIG. Since the pattern 20 is displayed on the upper surface section 11 by ink containing no magnetic material, the optical signal of this section 11 is the reflected light from the optical information 1 (the portion where the pattern 20 is not displayed) is “1”. ", Pattern 20
(The reflected light is small) is a pulse of “0”.
【００２４】図６（ｂ）に示す出力波形は図５の被検出
体３の裏面上方セクション１３の磁気情報２を検出した
磁気信号である。これは同セクション１３の磁気情報２
のある部分で“１”、他の部分で“０”のパルスとなっ
ている。The output waveform shown in FIG. 6B is a magnetic signal obtained by detecting the magnetic information 2 in the upper section 13 on the back surface of the object 3 shown in FIG. This is magnetic information 2 of section 13
Is a pulse of "1" in some parts and "0" in other parts.
【００２５】図７（ａ）に示す出力波形は図５の被検出
体３の表面下方セクション１２の光信号波形である。こ
の光信号は同セクション１２のうち光学情報１（磁気情
報２が印刷されていない部分）で“１”、磁気情報２の
部分で“０”のパルスとなっている。The output waveform shown in FIG. 7A is an optical signal waveform of the lower surface section 12 of the object 3 shown in FIG. This optical signal is a pulse of “1” in the optical information 1 (portion where the magnetic information 2 is not printed) and “0” in the magnetic information 2 portion of the section 12.
【００２６】図７（ｂ）に示す出力波形は図５の被検出
体３の摺動面５側から検出した表面下方セクション１２
と裏面下方セクション１４の磁気信号の和の信号であ
る。この磁気信号は両セクション１１、１４の磁気情報
２の部分で“１”、それ以外の箇所で“０”となってお
り、しかも、両磁気情報２の和の分だけ信号レベルが大
きくなっている。しかし、摺動面５側から検知した裏面
６の磁気信号レベルは摺動面５の磁気信号レベルよりも
小さいので、その和の磁気信号レベルは図７（ｂ）に破
線で示すように、摺動面５の磁気信号レベルの２倍では
なく、それよりやや大きい程度のレべルとなっている。The output waveform shown in FIG. 7B is the lower surface section 12 detected from the sliding surface 5 side of the detection target 3 in FIG.
And the magnetic signal of the lower rear section 14. This magnetic signal is "1" at the portion of the magnetic information 2 of both sections 11 and 14, and is "0" at other portions. In addition, the signal level increases by the sum of the two magnetic information 2. I have. However, since the magnetic signal level of the back surface 6 detected from the sliding surface 5 side is lower than the magnetic signal level of the sliding surface 5, the sum of the magnetic signal levels is as shown by the broken line in FIG. The level is not twice as large as the magnetic signal level of the moving surface 5, but is slightly larger than that.
【００２７】本発明のうち請求項１の被検出体の光学情
報及び磁気情報検出方法では、図６（ａ）（ｂ）、図７
（ａ）（ｂ）に示す光信号及び磁気信号を組合わせて、
図５に示す被検出体３の光学情報１及び磁気情報２のパ
ターンを検出し、同被検出体３の真偽を判別する。In the method for detecting optical information and magnetic information of an object to be detected according to the first aspect of the present invention, FIGS.
(A) By combining the optical signal and the magnetic signal shown in (b),
The pattern of the optical information 1 and the magnetic information 2 of the object 3 shown in FIG. 5 is detected, and the authenticity of the object 3 is determined.
【００２８】光・磁気複合センサー４の実際の配置例を
図８に示した。同図のように搬送方向と同方向に被検出
体３が幅方向に２ブロックに分離できるものの場合は、
二つの光・磁気複合センサー４Ａ、４Ｂを使用し、その
うち一方の光・磁気複合センサー４Ａに摺動面５の磁気
情報２の検出を主目的としたギャップ長の短いものを使
用し、他の光・磁気複合センサー４Ｂに裏面６の磁気情
報２の検出を主目的としたギャップ長の長いもの使用
し、両光・磁気複合センサー４Ａ、４Ｂから得られる光
学情報１及び磁気情報２を組み合わせて被検出体３の真
偽を判別するのが望ましい。FIG. 8 shows an example of the actual arrangement of the combined optical / magnetic sensor 4. In the case where the object 3 can be separated into two blocks in the width direction in the same direction as the transport direction as shown in FIG.
Two optical / magnetic composite sensors 4A and 4B are used, and one of the optical / magnetic composite sensors 4A and 4B having a short gap length mainly for detecting the magnetic information 2 on the sliding surface 5 is used for the other optical / magnetic composite sensor 4A. The optical / magnetic composite sensor 4B having a long gap length mainly for detecting the magnetic information 2 on the back surface 6 is used, and the optical information 1 and the magnetic information 2 obtained from the optical / magnetic composite sensors 4A and 4B are combined. It is desirable to determine the authenticity of the detection target 3.
【００２９】本発明のうち請求項２の被検出体の光学情
報及び磁気情報検出方法では、例えば図５のような被検
出体３の表示パターンを前記のように請求項１の検出方
法で検出するときに、これとは別に反射型の磁気・光学
複合センサを用いて、それらの被検出体３の摺動面（表
面或は裏面）５の光学情報１と磁気情報２とを検出し、
この検出信号を前記の請求項１の方法により得られた検
出信号と組合わせて、被検出体３の表示パターンを識別
する。According to the method for detecting optical information and magnetic information of an object to be detected according to the second aspect of the present invention, for example, the display pattern of the object to be detected as shown in FIG. In addition to this, the optical information 1 and the magnetic information 2 of the sliding surface (front surface or back surface) 5 of the detection object 3 are detected by using a reflection type magnetic / optical combined sensor separately from this.
The detection signal is combined with the detection signal obtained by the method of claim 1 to identify the display pattern of the object 3 to be detected.
【００３０】本発明のうち請求項３の被検出体の光学情
報及び磁気情報検出方法では、例えば図５のような被検
出体３の表示パターンを前記のように請求項１の検出方
法で検出するときに、これとは別に透過型の磁気・光学
複合センサを用いて、それらの被検出体３の摺動面（表
面）５とその裏面との両面の光学情報１と、摺動面５だ
けの磁気情報２とを検出し、この検出信号を前記の請求
項１の方法により得られた検出信号と組合わせて、被検
出体３の表示パターンを識別し、その真偽を判別するよ
うにしてもよい。According to the method for detecting optical information and magnetic information of an object to be detected according to the third aspect of the present invention, for example, the display pattern of the object to be detected as shown in FIG. In addition, the optical information 1 on both the sliding surface (front surface) 5 and the back surface of the object 3 to be detected and the sliding surface 5 Only the magnetic information 2 is detected, and the detection signal is combined with the detection signal obtained by the method of claim 1 to identify the display pattern of the detection target 3 and determine whether the display pattern is true or false. It may be.
【００３１】[0031]
【発明の効果】本発明の被検出体の光学情報及び磁気情
報検出方法によれば次の様な効果がある。 ．磁性インクを使用した紙葉類の検出能力が向上し、
被検出体３の真偽を正確に判別でき、セキュリティが向
上する。 ．本発明の方法で得られた光信号と磁気信号を組み合
わせることにより、被検出体３を磁性トナーを使用した
複写機により両面コピーした複写物（変造品）の模様の
位置ズレを検出し易くなり、被検出体３の真偽を判別す
る能力が向上する。 ．請求項２、３の検出方法によれば、片面に磁性イン
クによりパターンが表示され、他面には磁性体を含まな
いインクでパターンが表示されている被検出体３をも検
出できるので、磁性トナーを使用可能な複写機と磁性体
を含まないトナーを使用可能な複写機との２台を使用し
て偽造或は模倣しても偽物であることが検出可能である
ため、実際は偽造或は模倣が不可能に近く、セキュリテ
ィがより一層向上する。According to the method for detecting optical information and magnetic information of an object to be detected according to the present invention, the following effects can be obtained. . The ability to detect paper sheets using magnetic ink has been improved,
The authenticity of the detection target 3 can be accurately determined, and the security is improved. . By combining the optical signal and the magnetic signal obtained by the method of the present invention, it becomes easy to detect the positional deviation of the pattern of a copy (modified product) obtained by copying the detection target 3 on both sides by a copying machine using magnetic toner. Thus, the ability to determine the authenticity of the detection target 3 is improved. . According to the detection method of the second and third aspects, it is possible to detect the detection target 3 on which the pattern is displayed on one side with the magnetic ink and the pattern is displayed on the other side with the ink containing no magnetic material. Forgery or imitation can be detected using two copiers, one using toner and the other using magnetic toner-free toner. Imitation is almost impossible and security is further improved.
【図１】本発明の検出方法の一例を示す説明図。FIG. 1 is an explanatory diagram showing an example of a detection method according to the present invention.
【図２】（ａ）は本発明の検出方法で検出される被検出
体の摺動面の説明図、（ｂ）は同被検出体の裏面の説明
図。FIG. 2A is an explanatory diagram of a sliding surface of a detected object detected by the detection method of the present invention, and FIG. 2B is an explanatory diagram of a back surface of the detected object.
【図３】（ａ）は本発明の検出方法で検出された図２の
セクション１１の光信号の波形図、（ｂ）は同検出方法
で検出された図２のセクション１１と１３の和の磁気信
号の波形図。3 (a) is a waveform diagram of an optical signal of section 11 in FIG. 2 detected by the detection method of the present invention, and FIG. 3 (b) is a sum of sections 11 and 13 of FIG. 2 detected by the detection method. FIG. 4 is a waveform diagram of a magnetic signal.
【図４】（ａ）は本発明の検出方法で検出された図２の
セクション１１の光信号の波形図、（ｂ）は同検出方法
で検出された図２のセクション１２と１４の和の磁気信
号の波形図。4 (a) is a waveform diagram of an optical signal of section 11 in FIG. 2 detected by the detection method of the present invention, and FIG. 4 (b) is a sum of sections 12 and 14 of FIG. 2 detected by the detection method. FIG. 4 is a waveform diagram of a magnetic signal.
【図５】（ａ）は本発明の検出方法で検出される他の被
検出体の摺動面の説明図、（ｂ）は同被検出体の裏面の
説明図。5A is an explanatory diagram of a sliding surface of another object to be detected by the detection method of the present invention, and FIG. 5B is an explanatory diagram of a back surface of the object to be detected.
【図６】（ａ）は本発明の検出方法で検出された図５の
セクション１１の光信号の波形図、（ｂ）は同検出方法
で検出された図５のセクション１３の磁気信号の波形
図。6A is a waveform diagram of an optical signal of section 11 in FIG. 5 detected by the detection method of the present invention, and FIG. 6B is a waveform of a magnetic signal of section 13 in FIG. 5 detected by the detection method. FIG.
【図７】（ａ）は本発明の検出方法で検出された図５の
セクション１２の光信号の波形図、（ｂ）は同検出方法
で検出された図５のセクション１４の磁気信号の波形
図。7A is a waveform diagram of an optical signal of the section 12 of FIG. 5 detected by the detection method of the present invention, and FIG. 7B is a waveform of a magnetic signal of the section 14 of FIG. 5 detected by the detection method; FIG.
【図８】本発明の検出方法における光・磁気複合センサ
ーの配置説明図。FIG. 8 is an explanatory view of the arrangement of a combined optical / magnetic sensor in the detection method of the present invention.
【図９】従来の検出方法における光・磁気複合センサー
の配置説明図。FIG. 9 is an explanatory view of an arrangement of a combined optical / magnetic sensor in a conventional detection method.
１ 光学情報 ２ 磁気情報 ３ 被検出体 ４ 光・磁気複合センサー ５ 摺動面 ６ 裏面 DESCRIPTION OF SYMBOLS 1 Optical information 2 Magnetic information 3 Detected object 4 Optical / magnetic composite sensor 5 Sliding surface 6 Back surface
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｇ１１Ｂ 5/718 Ｇ０６Ｋ 19/00 Ｆ (56)参考文献 特開 平１−143016（ＪＰ，Ａ) 特開 平２−143932（ＪＰ，Ａ) 実開 昭61−93823（ＪＰ，Ｕ) 特公 昭49−32130（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) G11B 13/04 B42D 15/10 G06K 7/08 G06K 19/08 G11B 5/02 G11B 5/718 Continuation of the front page (51) Int.Cl. 7 identification code FI G11B 5/718 G06K 19/00 F (56) References JP-A-1-143016 (JP, A) JP-A-2-143393 (JP, A (Japanese) JP-A-61-93823 (JP, U) JP-B-49-32130 (JP, B1) (58) Fields investigated (Int. Cl. 7 , DB name) G11B 13/04 B42D 15/10 G06K 7 / 08 G06K 19/08 G11B 5/02 G11B 5/718
Claims (3)
が記録されている被検出体３と光・磁気複合センサー４
とを相対的に摺動させて、同複合センサー４により被検
出体３の磁気情報２から磁気信号を、光学情報１から光
信号を得て、被検出体３から光学情報１及び磁気情報２
を検出する方法において、光信号は被検出体３の摺動面
５のみから得、磁気信号は同摺動面５及びその裏面６か
ら得ることを特徴とする被検出体の光学情報及び磁気情
報検出方法。1. Optical information 1 and magnetic information 2 by magnetic material
Object 3 and optical / magnetic composite sensor 4 on which is recorded
Are relatively slid, the composite sensor 4 obtains a magnetic signal from the magnetic information 2 of the object 3 and an optical signal from the optical information 1, and obtains the optical information 1 and the magnetic information 2 from the object 3.
Wherein the optical signal is obtained only from the sliding surface 5 of the object 3 and the magnetic signal is obtained from the sliding surface 5 and the back surface 6 thereof. Detection method.
情報検出方法により検出される光信号及び磁気信号に、
それとは別に被検出体３の摺動面５の光学情報１及び磁
気情報２から検出した光信号及び磁気信号を組合わせる
ことを特徴とする被検出体の光学情報及び磁気情報検出
方法。2. An optical signal and a magnetic signal detected by the method for detecting optical information and magnetic information of an object according to claim 1,
A method for detecting optical information and magnetic information of an object to be detected, characterized by combining an optical signal and a magnetic signal detected from the optical information 1 and the magnetic information 2 on the sliding surface 5 of the object 3 separately.
情報検出方法により検出される光信号及び磁気信号に、
それとは別に被検出体３の摺動面５とその裏面との両面
の光学情報１から検出した光信号と、同摺動面５の磁気
情報２だけから検出した磁気信号とを組合わせることを
特徴とする被検出体の光学情報及び磁気情報検出方法。3. An optical signal and a magnetic signal detected by the method for detecting optical information and magnetic information of an object according to claim 1,
Separately, the optical signal detected from the optical information 1 on both the sliding surface 5 and the back surface of the detection object 3 and the magnetic signal detected from the magnetic information 2 on the sliding surface 5 alone are combined. A method for detecting optical information and magnetic information of an object to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4224777A JP3009546B2 (en) | 1992-07-31 | 1992-07-31 | Method for detecting optical information and magnetic information of a detected object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4224777A JP3009546B2 (en) | 1992-07-31 | 1992-07-31 | Method for detecting optical information and magnetic information of a detected object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06195798A JPH06195798A (en) | 1994-07-15 |
| JP3009546B2 true JP3009546B2 (en) | 2000-02-14 |
Family
ID=16819052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4224777A Expired - Fee Related JP3009546B2 (en) | 1992-07-31 | 1992-07-31 | Method for detecting optical information and magnetic information of a detected object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3009546B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101824444B1 (en) | 2010-05-16 | 2018-03-14 | 노티-크래프트 피티와이 엘티디 | Control of multi-hulled water craft |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111016494B (en) * | 2019-11-20 | 2021-01-26 | 中钞特种防伪科技有限公司 | Anti-counterfeiting element and anti-counterfeiting product |
-
1992
- 1992-07-31 JP JP4224777A patent/JP3009546B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101824444B1 (en) | 2010-05-16 | 2018-03-14 | 노티-크래프트 피티와이 엘티디 | Control of multi-hulled water craft |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06195798A (en) | 1994-07-15 |
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