JP2005085163A - Authenticity examination method for printed matter - Google Patents

Authenticity examination method for printed matter Download PDF

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JP2005085163A
JP2005085163A JP2003318873A JP2003318873A JP2005085163A JP 2005085163 A JP2005085163 A JP 2005085163A JP 2003318873 A JP2003318873 A JP 2003318873A JP 2003318873 A JP2003318873 A JP 2003318873A JP 2005085163 A JP2005085163 A JP 2005085163A
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ray
authenticity
bill
appraisal
printed
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Takeshige Tanigaki
Koichi Yamada
幸一 山田
武重 谷垣
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Medeiekkusutekku Kk
メディエックステック株式会社
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<P>PROBLEM TO BE SOLVED: To provide a method for accurately and quickly examining authenticity of a printed matter. <P>SOLUTION: Soft X-rays of about 0.1 to 2keV are generated by an X-ray generator 2 of an X-ray inspection device 1 and are radiated to paper money on a sample stage 3, and ink-printed parts on the front side and the rear side of the paper money 10 and a watermark part are simultaneously imaged into one radiographic image by an X-ray detector 4 using a flat panel X-ray sensor or the like, and the radiographic image is collated with a template by a computer 5 to examine authenticity of the paper money 10. and an examination result and the radiographic image of the paper money 10 are displayed on a monitor 6. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、紙幣、金券類又は有価証券類等の印刷物の真偽の鑑定方法に関する。 The present invention bill relates appraisal method authenticity of the printed material such as gold notes or securities,.

現在の紙幣には、偽造や改竄を防止するために、磁性インキ印刷部や透かし部(透かし模様、識別マーク)等が設けられている。 The current bill, in order to prevent forgery and falsification, magnetic ink printing unit and a watermark portion (watermarks, identification mark), and the like.

このような紙幣の真偽鑑定方法として、紙幣の裏面又は表面の全面に対して発光ダイオードの光源により光を当て、当該紙幣の表面又は裏面のインキ印刷部全体を把握すると共に、透かし部の位置及び形を確認して、これらの鑑定要素をマスタープレートと照合することにより紙幣の真偽鑑定を行う方法が知られている(例えば、特許文献1参照)。 As authenticity appraisal method such banknotes, illuminated by the light emitting diodes of the light source relative to the entire back surface or surface of the bill, to grasp the entire ink printing unit of surface or back surface of the banknote, the position of the watermark portion and check the shape, the method of performing the authenticity appraisal of a bill by comparing these appraisal elements as master plates are known (e.g., see Patent Document 1).
特開2001−325639号公報 JP 2001-325639 JP

しかしながら、上述の真偽鑑定方法により、紙幣の表面及び裏面の両面のインキ印刷部に基づいて真偽鑑定を行う場合には、表面又は裏面の一方の面の鑑定が終了した後に、当該紙幣を裏返すと共に適切なマスタープレートに交換する必要があり、その交換作業に手間と時間を要し、迅速な真偽鑑定の妨げとなる。 However, the authenticity appraisal method described above, when performing authenticity appraisal based on the ink printing of both sides of the front and back surfaces of the paper money, after the appraisal of one face of the front or rear surface is finished, the banknote must be replaced to an appropriate master plate with turning over, it takes labor and time to the replacement, hinders rapid authenticity appraisal.

これに対し、上述の真偽鑑定方法により、紙幣の表面又は裏面の一方の面のみに基づいて真偽鑑定をすると、少ない鑑定要素に基づいて紙幣を真偽鑑定することとなるため、必然的に真偽鑑定の精度が劣るものとなり、正確な真偽鑑定を達成することは出来ない。 In contrast, the authenticity appraisal method described above, for when the authenticity appraisal based only on one side of the front or rear surface of the bill, and thus the authenticity appraised the bill on the basis of less expert element inevitably it is assumed that the accuracy of authenticity appraisal is poor, it is not possible to achieve accurate authenticity appraisal.

本発明は、紙幣、金券類又は有価証券類等の印刷物の真偽の鑑定方法に関し、特に、正確且つ迅速に印刷物の真偽を鑑定することが可能な印刷物の真偽鑑定方法を提供することを目的とする。 The present invention bill relates appraisal method of authenticity of the printed material such as gold notes or securities, in particular, to provide the authenticity appraisal method accurately and quickly capable of appraisal the authenticity of the printed material printed matter With the goal.

上記目的を達成するために本発明によれば、表面及び/又は裏面が印刷された印刷物に対してX線を照射して、前記印刷物のX線透視像を撮像し、前記X線透視像に基づいて前記印刷物の真偽を鑑定する印刷物の真偽鑑定方法が提供される。 According to the present invention in order to achieve the above object, it is irradiated with X-rays to the printed material surface and / or back surface is printed, capturing the X-ray fluoroscopic image of the printed material, the X-ray fluoroscopic image authenticity appraisal method of a printed matter for appraisal authenticity of the printed matter is provided on the basis of.

上記発明においては特に限定されないが、前記印刷物は、透かし部が形成されていることが好ましい。 Although not particularly limited in the invention, the printed material is preferably a watermark section is formed.

本発明によれば、X線透過法を用いて印刷物のX線透視像を撮像することにより、当該印刷物の表裏両面に印刷された印刷部を同一のX線透視像に同時に撮像することが出来るので、印刷物の表面の印刷部と、当該印刷物の裏面の印刷部とを同時に真偽鑑定することが可能となり、正確且つ迅速な印刷物の真偽鑑定が可能となる。 According to the present invention, by imaging the X-ray fluoroscopic image of the printed matter by using an X-ray transmission method, it is possible to simultaneously image the printing portion printed on both sides of the printed material on the same X-ray fluoroscopic image since the printing section of the print surface, it is possible to simultaneously authenticity appraisal and a printing portion of the rear surface of the printed material, it is possible to authenticity appraisal accurate and rapid prints.

また、印刷物の表裏両面の印刷部が同一のX線透視像に撮像されることにより、当該表裏面の印刷部同士の相対的位置関係をも鑑定要素に加えることが出来るので、より正確な印刷物の真偽鑑定を行うことが可能となる。 Further, since the printing of the front and rear surfaces of the printed material is imaged to the same X-ray fluoroscopic image, since it is also added to the appraisal element relative positional relationship between the printing portions of the front and back surfaces, more accurate prints it is possible to perform the authenticity appraisal.

さらに、印刷物に透かし部が形成されている場合には、X線透過法により、表裏両面の印刷部に加えて当該透かし部をも同一のX線透視像に撮像することが可能になると共に、当該透かし部と表裏両面の印刷部との相対的位置関係をも鑑定要素に加えることが出来るので、印刷物のより正確且つ迅速な真偽鑑定を行うことが可能となる。 Further, with the case where the watermark portion is formed on the printed matter, the X-ray transmission method, it is possible to image the same X-ray transmission image be the watermark portion in addition to the printing of both sides, since the watermark portion and can be added to the appraisal element relative positional relationship between the front and back surfaces of the printed portion, it is possible to perform a more accurate and rapid authenticity appraisal of printed matter.

以下、本発明の実施形態を図面に基づいて説明する。 It will be described below with reference to embodiments of the present invention with reference to the drawings.

図1は本発明の実施形態に係る真偽鑑定方法に用いられるX線検査装置の全体システムの概略構成図、図2(A)は本発明の実施形態に係る真偽鑑定方法の被検物である千円紙幣の全体図、図2(B)は図2(A)のIIB部の要部X線透視像(写真)、図2(C)は図2(A)のIIC部の要部X線透視像(写真)、図3は本発明の実施形態に係る真偽鑑定方法に用いられるテンプレートであり、図3(A)は図2(B)に相当する部分、図3(B)は図2(C)に相当する部分である。 Figure 1 is exemplary schematic diagram of the overall system of the X-ray inspection apparatus for use in authenticity appraisal method according to Embodiment, FIG. 2 (A) specimen authenticity appraisal method according to an embodiment of the present invention of the present invention overall view, essential for IIC of FIG. 2 (B) IIB portion main unit X-ray fluoroscopic images of FIG. 2 (a) (photograph), FIG. 2 (C) FIG. 2 (a) of 1000 yen note is part X-ray fluoroscopic image (photograph), 3 is a template used in the authenticity appraisal method according to the embodiment of the present invention, portions corresponding to FIG. 3 (a) FIG. 2 (B), the 3 (B ) is a part corresponding to FIG. 2 (C). なお、本実施形態では、図2(A)に示されている面を紙幣10の表面と称し、その反対側の面を紙幣10の裏面と称する。 In the present embodiment, referred to the plane which is shown in FIG. 2 (A) and the surface of the bill 10, referred to as the opposite surface and the back surface of the banknote 10.

先ず、本発明の実施形態に係る真偽鑑定方法に用いられるX線検査装置1の全体構成について説明すると、図1に示すように、試料台3に載置された紙幣10に対してX線を照射するX線発生器2と、紙幣10をX線透視したX線透視像を撮像するX線検出器4と、当該撮像されたX線透視像に基づいて紙幣10の真偽鑑定を行うコンピュータ5と、紙幣10のX線透視画像等を表示するモニタ6と、を備えており、X線透過法を用いて、図2(A)に示すような紙幣10の真偽を鑑定することが可能となっている。 First, to describe the overall structure of the X-ray inspection apparatus 1 used in the authenticity appraisal method according to the embodiment of the present invention, as shown in FIG. 1, the X-ray with respect to the placed banknotes 10 on the sample stage 3 performing an X-ray generator 2 to be irradiated with X-ray detector 4 for capturing the X-ray fluoroscopic image of the banknote 10 and X-ray fluoroscopy, the authenticity appraisal of the bill 10 based on the X-ray fluoroscopic image that is the image the a computer 5, a monitor 6 for displaying an X-ray fluoroscopic image or the like of the banknote 10, provided with a, that by using the X-ray transmission method, appraisal authenticity of the banknote 10 as shown in FIG. 2 (a) It has become possible.

以下に、このX線検査装置1の詳細な構成と共に、本発明の実施形態に係る真偽鑑定方法について説明する。 Hereinafter, the detailed structure of the X-ray inspection apparatus 1 will be described authenticity appraisal method according to an embodiment of the present invention.

本実施形態に係る真偽鑑定方法では、X線検査装置1の試料台3の上の所定の位置に被検物である紙幣10を載置した後に、先ず、X線発生器2に管電圧0.1〜30kVを印加してX線を発生させ、当該X線を紙幣10に対して照射する。 The authenticity appraisal method according to the present embodiment, after placing the paper money 10 is a test object at a predetermined position on the sample stage 3 of the X-ray inspection apparatus 1, first, the X-ray generator 2 to the tube voltage 0.1~30kV to generate X-rays by applying, irradiating the X-rays to the banknote 10. このX線発生器2により発生されるX線としては、0.1〜2keV程度の軟X線が好ましい。 The X-rays generated by the X-ray generator 2, soft X-rays of about 0.1~2keV are preferred. 当該X線発生器2のX線管焦点寸法としては、マイクロ・フォーカス(μm)やナノ・フォーカス(nm)級の超高解像度用のものは必要なく、0.1〜1.0mm程度のミリ・フォーカス級が具備されていれば足りる。 The X-ray tube focal dimensions of the X-ray generator 2, without those for micro-focus ([mu] m) and nano-focus (nm) class ultra-high resolution, of the order of 0.1~1.0mm millimeters focus class is sufficient if it is provided.

本実施形態に係る真偽鑑定方法では、このようなエネルギーが低く透過性の弱い軟X線を照射することにより、紙幣のような紙等に印刷された極めて薄い磁性インキ印刷部のX線透視像を鮮明に撮像することが可能となっている。 The authenticity appraisal method according to this embodiment, by such energy irradiates the permeable weak soft X-ray low, X-ray fluoroscopy very thin magnetic ink print portion printed on paper or the like, such as banknotes it is possible to clearly image the image.

これに対し、例えば、2〜20keV程度の典型的なX線を照射した場合には、X線が薄い磁性インキ印刷部をも透過してしまい、真偽鑑定に際して十分に鮮明なX線透視像を撮像することが出来ない。 In contrast, for example, when irradiated with typical X-ray of about 2~20keV is will be transmitted also X-rays thin magnetic ink printing unit, sufficiently sharp X-ray fluoroscopic image upon authenticity Appraisal it is not possible to image the.

また、特に図示しないが、本実施形態でX線検査装置1では、X線発生器2と、紙幣10を載置する試料台3との間に、例えば、厚さ0.2mm程度のアルミニウム箔を介在させて、X線発生器2から照射されるX線に対してフィルタリングを行い、連続X線スペクトルの中でも物質透過能力の比較的強い短波長成分の照射を抑制し、薄い磁性インキ印刷部のより鮮明なX線透視像を撮像可能にしている。 Further, although not specifically shown, the X-ray inspection apparatus 1 in the present embodiment, the X-ray generator 2, between the sample stage 3 for placing the banknotes 10, for example, a thickness of about 0.2mm aluminum foil the interposed therebetween, performs filtering on X-rays emitted from the X-ray generator 2, to suppress the irradiation of relatively strong short wavelength components of the substance penetration capability even in a continuous X-ray spectrum, thin magnetic ink printing unit and it enables imaging a sharp X-ray fluoroscopic image from the.

次に、上記のようにX線発生器2から照射されたX線が、試料台3上に載置された紙幣10を透過し、そのX線透視像をX線検出器4が検出して、紙幣10のX線透視像を撮像する。 Then, X-rays emitted from the X-ray generator 2 as described above, passes through the placed banknotes 10 on the sample stage 3, the X-ray fluoroscopic image by detecting the X-ray detector 4 captures an X-ray fluoroscopic image of the banknote 10.

本実施形態で用いられるX線検査装置1のX線検出器4は、例えば、沃化セシウム(CsI)やカドミウム・テルライド(CdTe)等のX線を可視光に変換するシンチレータの下に、MOSやフォトダイオード等の光電変換素子を二次元に多数配列させたフラットパネルX線センサであり、12bits(4096階調)の高い階調表現力(ダイナミック・レンジ)でデジタルX線透視画像を撮像することが可能となっている。 X-ray detector 4 of the X-ray inspection apparatus 1 used in this embodiment, for example, X-rays such as cesium iodide (CsI) and cadmium telluride (CdTe) under the scintillator to convert to visible light, MOS a flat panel X-ray sensor photoelectric conversion element was arrayed in a two-dimensional, such as a photodiode or captures a digital X-ray fluoroscopic image with high gradation expression power of 12bits (4096 gradations) (dynamic range) it is possible.

本実施形態に係る真偽鑑定方法では、紙幣のような薄い紙等を撮像するため、エネルギーの絶対値が低いX線を検出する必要がある上に、さらに、紙幣10のインキ印刷部や透かし部のX線吸収により生じた透過X線の微弱な差異をも検出する必要があるが、上記のようなフラットパネルX線センサをX線検出器4として用いることにより、当該フラットパネルX線センサの細かな階調特性により、低エネルギーの透過X線における微弱な差異をも精度良く検出することが可能となっている。 The authenticity appraisal method according to the present embodiment, in order to image the thin paper such as banknotes, on the absolute value of the energy is required to detect the low X-ray, further ink printing unit and a watermark of the banknote 10 Although parts it is necessary to detect even a weak difference of transmitted X-rays generated by the X-ray absorption, the use of the flat panel X-ray sensor as described above as an X-ray detector 4, the flat panel X-ray sensor the fine gradation characteristics of, it is possible to also accurately detect weak difference in transmitted X-rays of low energy.

因みに、従来から利用されているX線I. By the way, X-rays are available from the conventional I. I. I. 管(X線イメージインテンシファイア)を用いた場合には、8bits(256階調)程度の低階調のアナログX線透視画像しか得られないため、紙幣10のX線透視画像において生じた微弱な差異を十分に検出することが出来ず、本実施形態に係る真偽鑑定方法に適用可能なX線透視画像を撮像することが出来ない。 Tube in the case of using (X-ray image intensifier) ​​and, since the 8bits (256 gradations) only about the low tone analog X-ray fluoroscopic image is not obtained, feeble generated in the X-ray fluoroscopic image of the banknote 10 a difference can not be sufficiently detected, can not be imaged applicable X-ray fluoroscopic image authenticity appraisal method according to the present embodiment.

本実施形態に係る真偽鑑定方法に用いられるX線検査装置1では、これらX線発生器2、試料台3、及び、X線検出器4が、被検物10のX線透視像の幾何学的拡大率Mが10倍程度になるように配置されている。 In truth appraisal X-ray inspection apparatus used in the method 1 of the present embodiment, these X-ray generator 2, the sample stage 3, and, the X-ray detector 4, the geometry of the X-ray transmission image of the object 10 histological magnification M is arranged to be about 10 times. この幾何学的拡大率は、図1に示すように、X線発生器2からX線検出器4の検出面までのFDD距離と、X線発生器2から被検物10までのFOD距離の比により規定される(M=FDD/FOD)。 The geometric magnification, as shown in FIG. 1, the FDD distance from the X-ray generator 2 to the detection surface of the X-ray detector 4, the FOD distance from the X-ray generator 2 to the test object 10 It is defined by the ratio (M = FDD / FOD).

このようなX線検出器4により紙幣10が撮像されると、同一のX線透視像に当該紙幣10の表面印刷部11、裏面印刷部12、及び、透かし部13が同時に撮像される。 When bill 10 is captured by such an X-ray detector 4, the surface printing unit 11 of the banknote 10 in the same X-ray fluoroscopic image, the rear surface printing section 12, and the watermark portion 13 are imaged simultaneously.

より具体的に、X線検出器4により撮像された紙幣10のX線透視像を部分的に説明すると、例えば、図2(A)の紙幣10のIIB部については、図2(B)に示すように、紙幣10の表面に磁性インキ(金属成分含有インキ)により印刷された「千円」及び「日本銀行」の文字等の表面印刷部11と、当該紙幣10の裏面に磁性インキにより印刷された丹頂鶴の図形等の裏面印刷部12とが、同一のX線透視像に同時に撮像される。 More specifically, when the X-ray fluoroscopic image of the banknote 10 that is captured by the X-ray detector 4 partially explained, for example, for the IIB portion of the bill 10 in FIG. 2 (A), FIG. 2 (B) as shown printing, the surface printing section 11 such as characters of printed by magnetic ink on the surface of the bill 10 (containing a metal component ink) "thousand yen" and "Bank of Japan", a magnetic ink to the back surface of the banknote 10 and the rear surface printing section 12 of the figure or the like of cranes that are, are simultaneously captured in the same X-ray fluoroscopic image. なお、図2(B)は、X線を紙幣10の裏面から照射した場合のX線透視像である。 Incidentally, FIG. 2 (B) is an X-ray fluoroscopic images when irradiated with X-rays from the rear surface of the bill 10.

また、例えば、X線を紙幣10の表面から照射した場合に、図2(A)の紙幣10のIIC部については、図2(C)に示すように、紙幣10の表面に磁性インキにより印刷された模様等の表面印刷部11、及び、当該紙幣10の裏面に磁性インキにより印刷された丹頂鶴の図形等の裏面印刷部12に加えて、当該紙幣10の略中央部にすき入れされた文豪夏目漱石の肖像画の透かし部13が、同一のX線透視像に同時に撮像される。 The printing, for example, when irradiated with X-rays from the surface of the bill 10, for IIC portion of the bill 10 of FIG. 2 (A), as shown in FIG. 2 (C), the surface of the bill 10 by magnetic ink surface printing section 11 such as the pattern or the like and, in addition to the back-side printing unit 12 of the figure or the like of the cranes on the back surface of the banknote 10 is printed by magnetic ink was placed plow in a substantially central portion of the banknote 10 Bungou portrait watermark portion 13 of Natsume is simultaneously imaged on the same X-ray fluoroscopic image.

なお、図2(B)及び図2(C)は、X線検出器4により撮像された紙幣10のX線透視像の一部しか示していないが、本実施形態に係る真偽鑑定方法では、X線発生器2により紙幣10全体に対して軟X線を照射し、X線検出器4により当該紙幣10全体のX線透視像を撮像する。 Incidentally, and FIG. 2 (B) and FIG. 2 (C) shows only a part of the X-ray fluoroscopic image of the banknote 10 that is captured by the X-ray detector 4, a boolean appraisal method according to the present embodiment It is irradiated with soft X-ray for the entire bill 10 by X-ray generator 2, the X-ray detector 4 for capturing the X-ray fluoroscopic image of the entire banknote 10.

このように、本実施形態に係る真偽鑑定方法では、X線透過法を用いて紙幣のX線透視像を撮像することにより、当該紙幣の表裏両面に印刷された磁性インキ印刷部と、当該紙幣に形成された透かし部と、を同一のX線透視像に同時に撮像することが出来るので、紙幣の表面の印刷部、裏面の印刷部、及び、透かし部を同時に真偽鑑定することが可能となり、正確且つ迅速な紙幣の真偽鑑定が可能となる。 Thus, the authenticity appraisal method according to the present embodiment, by imaging an X-ray fluoroscopic image of the bill by using a X-ray transmission method, a magnetic ink print portion printed on both sides of the banknote, the a watermark portion formed in the banknote, since it is possible to simultaneously imaging the same X-ray fluoroscopic image, the printing portion of the surface of the bill, the back surface of the printed portion, and, can simultaneously authenticity appraisal watermark portion next, it is possible to authenticity appraisal accurate and quick bill.

次に、コンピュータ5がX線検出器4により撮像された紙幣10のX線透視像に基づいて、当該紙幣10の真偽鑑定を行う。 Then, based on the X-ray fluoroscopic image of the bill 10 by the computer 5 is captured by the X-ray detector 4 carries out authenticity appraisal of the banknote 10.

本実施形態に係る真偽鑑定方法に用いられるコンピュータ5には、図3(A)及び図3(B)に示すような、紙幣10のX線透視像に対してパターンマッチング処理を行うためのテンプレート20が予め記憶されており、X線検出器4により撮像されたX線透視像に対して当該各テンプレート20を用いてパターンマッチング処理を行い、紙幣10の真偽鑑定を行う。 The computer 5 to be used in authenticity appraisal method according to the present embodiment, as shown in FIG. 3 (A) and FIG. 3 (B), the for performing pattern matching processing on the X-ray fluoroscopic image of the banknote 10 template and 20 is stored in advance, performs pattern matching processing by using the respective template 20 with respect to X-ray fluoroscopic images picked up by the X-ray detector 4 carries out authenticity appraisal of the banknote 10.

このコンピュータ5に予め記憶されたテンプレート20は、真券千円紙幣の表面印刷部、裏面印刷部及び透かし部の輪郭線が一体で形成されていると共に、当該表面印刷部、裏面印刷部及び透かし部の相対的位置関係が規定されている。 Prestored template 20 to computer 5, the surface printing section of the authentic bill yen bill, the back surface printing unit and a watermark portion of the contour lines are formed integrally, the surface printing section, the back surface printing unit and a watermark the relative positional relationship of the parts are defined.

より具体的に、このテンプレート20について部分的に説明すると、図3(A)は、図2(B)に示す紙幣10のIIB部に対応する当該テンプレート20の部分であり、真券千円紙幣の表面に印刷された「千円」及び「日本銀行」の文字等の表面印刷部に対応する表面図形21と、当該真券紙幣の裏面に印刷された丹頂鶴の図形などの裏面印刷部に対応する裏面図形22とが一体で形成されていると共に、当該テンプレート20において、表面図形21と裏面図形22との相対的位置関係が規定されている。 More specifically, to describe the template 20 partially, FIG. 3 (A), a portion of the template 20 which corresponds to the IIB portion of the bill 10 shown in FIG. 2 (B), genuine bill yen bill a surface shape 21 corresponding to the surface printing section such as characters and of "yen" are printed on the surface of "Bank", corresponding to the rear surface printing section, such as shapes of cranes that are printed on the back of the legitimate bill banknote with a rear surface shape 22 which is formed integrally, in the template 20, the relative positional relationship between the surface shapes 21 and back figure 22 are defined.

また、図3(B)は、図2(C)に示す紙幣10のIIC部に対応するテンプレート20の部分であり、真券千円紙幣の表面に印刷された模様等の表面印刷部に対応する表面図形21、及び、当該真券紙幣の裏面に印刷された丹頂鶴の図形等の裏面印刷部に対応する裏面図形22に加えて、当該真券紙幣の略中央部にすき入れされた文豪夏目漱石の肖像画の透かし部に対応する透かし図形23とが一体で形成されていると共に、当該テンプレート20において、表面図形21、裏面図形22及び透かし図形23との相対的位置関係が規定されている。 Further, FIG. 3 (B), a portion of the template 20 corresponding to the IIC portion of the bill 10 shown in FIG. 2 (C), corresponding to the surface printing unit such as a pattern printed on the surface of the genuine bill yen bill surface shapes 21, and, the legitimate bill bill in addition to the back surface shape 22 corresponding to the rear surface printing section of the figure or the like of the cranes that are printed on the back side, the genuine bill Bungou is placed plow in a substantially central portion of the bill Natsume with a watermark graphic 23 corresponding to the watermark portion portrait Soseki is formed integrally, in the template 20, the surface figure 21, the relative positional relationship between the back surface shape 22 and watermark graphic 23 is defined.

なお、図3(A)及び図3(B)は、コンピュータ5に予め記憶されたテンプレート20の一部しか示していないが、本実施形態に係る真偽鑑定方法では、真券千円紙幣全体の表面印刷部、裏面印刷部及び透かし部の輪郭線が一体で形成されている。 Incidentally, FIG. 3 (A) and FIG. 3 (B), only shows a portion of the template 20 which is previously stored in the computer 5, the authenticity appraisal method according to the present embodiment, the entire genuine bill yen bill surface printing unit, the back side printing unit and a watermark portion of the contour lines are formed integrally.

本実施形態で用いられるX線検査装置1のコンピュータ5による具体的な鑑定方法としては、上述のようにX線検出器4により撮像されたX線透視像に対して、テンプレート20を照合させてマッチング処理を行い、紙幣10のX線透視像が、テンプレート20に一致した場合には、当該紙幣10は真券と鑑定される。 Specific appraisal method by a computer 5 of the X-ray inspection apparatus 1 used in this embodiment, the X-ray fluoroscopic images picked up by the X-ray detector 4 as described above, the template 20 is collated performs matching processing, X-rays fluoroscopic image of the banknote 10, if they match to the template 20, the banknote 10 is appraised as genuine note. これに対して、紙幣10のX線透視像の一部でもテンプレート20と一致しない場合には、当該紙幣10は偽造紙幣と鑑定される。 On the contrary, if it does not match the part even template 20 of the X-ray fluoroscopic image of the bill 10, the banknote 10 is appraised counterfeit banknotes.

次に、このコンピュータ5による紙幣10の鑑定結果と共に、紙幣10のX線透視画像がモニタ6に表示される。 Next, appraisal results with the bill 10 by the computer 5, X-ray fluoroscopic image of the banknote 10 is displayed on the monitor 6. この際、コンピュータ5により紙幣10が偽造紙幣と鑑定された場合には、当該モニタ6に表示されるX線透視画像に、テンプレート20との不一致箇所をマーキングして表示しても良い。 At this time, when the banknote 10 is appraised counterfeit banknote by the computer 5, the X-ray fluoroscopic image displayed on the monitor 6, may be displayed by marking a mismatch portion of the template 20. また、当該モニタ5にX線透視画像に対してテンプレートを重畳させて表示し、当該X線透視画像とテンプレートとの一致性に基づいて鑑定者が目視により紙幣10の真偽鑑定を行っても良い。 Further, by superimposing the template for X-ray fluoroscopic image displayed on the monitor 5, even expert person based on consistency between said X-ray fluoroscopic image and the template is performed authenticity appraisal of the banknote 10 visually good.

このように、本実施形態に係る真偽鑑定方法では、X線透過法を用いて、紙幣の表裏両面の磁性インキ印刷物及び透かし部が同一のX線透視像に撮像されると共に、真券紙幣の表裏面のインキ印刷部及び透かし部に対応する図形が一体で形成されたテンプレートを用いることにより、当該表裏面のインキ印刷部同士の相対的位置関係や表裏面の磁性インキ印刷部と透かし部との相対的位置関係をも鑑定要素に加えることが出来るので、より正確な紙幣の真偽鑑定を行うことが可能となる。 Thus, the authenticity appraisal method according to the present embodiment, by using the X-ray transmission method, the magnetic ink print and watermark portion of both sides of the bill are imaged to the same X-ray fluoroscopic image, genuine bill banknote by the figure corresponding to the ink printing unit and a watermark portion of the front and back surfaces using a template that is formed integrally, the magnetic ink printed portion of the relative positional relationship and the front and back surfaces of the ink printing portions of the front and back surfaces and the watermark portion since it is also added to the appraisal element relative positional relationship between, it is possible to perform authenticity appraisal more accurate bills.

なお、以上説明した実施形態は、本発明の理解を容易にするために記載されたものであって、本発明を限定するために記載されたものではない。 Incidentally, the embodiments described above, which has been described to facilitate understanding of the present invention and were not described to limit the present invention. したがって、上記の実施形態に開示された各要素は、本発明の技術的範囲に属する全ての設計変更や均等物をも含む趣旨である。 Therefore, the elements disclosed in the above embodiments are intended to embrace all design changes and equivalents belonging to the technical scope of the present invention.

上述の実施形態では、紙幣を鑑定対象として説明したが、本発明に係る真偽鑑定方法では特にこれに限定されず、紙幣の他に、例えば、商品券若しくはチケット等の金券類、又は、国債証券、地方債証券、出資証券、株券若しくはトラベラーズチェック等の有価証券等の、所定の文字や図形等が所定の位置にインキで印刷されたり、所定の位置にすき入れ技法等により所定の図形等の透かし部が形成された印刷物を鑑定対象とすることが出来る。 In the above embodiment has been described the bill as appraisal target is not particularly limited to the authenticity appraisal method according to the present invention, in addition to the bill, for example, cash vouchers such as gift certificates or tickets, or government securities, municipal bond securities, equity securities, such as securities, such as stock certificates or traveler's checks, or a predetermined character and graphics are printed in ink at a predetermined position, predetermined graphic or the like by like putting techniques, such as in a predetermined position it can be a printed material watermark portion is formed as appraisal target.

また、上述の実施形態に係る真偽鑑定方法では、被検体を日本国千円紙幣とした場合について説明したが、本発明においては特にこれに限定されず、例えば、日本国の二千円、五千円、一万円紙幣を被検体としても良く、或いは、紙製やプラスティック製の外国紙幣を被検体としても良い。 Also, the authenticity appraisal method according to the above embodiment has described the case where the object and Japan 1000 yen note is not particularly limited thereto in the present invention, for example, Japanese two thousand yen, 5,000 yen, well the 10,000 yen note also as the subject, or, a foreign bill of paper or made of plastic may be used as the subject.

さらに、上述の実施形態では、紙幣全体を撮像したX線透視像に基づいて紙幣の真偽鑑定を行うように説明したが、本発明においては特にこれに限定されず、紙幣の真偽鑑定要素と成り得る紙幣の要部を任意に設定し、当該要部のみのX線透視像に基づいて真偽鑑定を行っても良く、これにより、効率的に紙幣の真偽鑑定を行うことが可能となる。 Furthermore, in the above embodiment has been described as performing authenticity appraisal of the bill on the basis of the X-ray fluoroscopic image captured the entire bill is not particularly limited thereto in the present invention, authenticity appraisal elements of the banknote arbitrarily setting the main part of become get bills and may perform authenticity appraisal based on X-ray fluoroscopic image of the main part only, thereby, can be efficiently carried out the authenticity appraisal of banknotes to become.

また、上述の実施形態では、真券紙幣の表裏面の印刷部及び透かし部の輪郭線に対して照合可能なようなテンプレートを用いるように説明したが、本発明においては特にこれに限定されず、真偽鑑定に用いられるテンプレートに、真券紙幣の表裏面の印刷部及び透かし部が有する模様等に対応する模様等を形成しても良く、これにより、さらに正確な真偽鑑定を達成することが可能となる。 In the above embodiments have been described as using a verifiable such template for contour printing unit and a watermark portion of the front and back surfaces of the genuine bill bill is not particularly limited thereto in the present invention , the template used for the authenticity appraisal may form a pattern or the like corresponding to the pattern or the like having the printing unit and the watermark portion of the front and back surfaces of the genuine bill bill, thereby achieving a more accurate authenticity appraisal it becomes possible.

図1は、本発明の実施形態に係る真偽鑑定方法に用いられるX線検査装置の全体システムの概略構成図である。 Figure 1 is a schematic diagram of the overall system of the X-ray inspection apparatus for use in authenticity appraisal method according to the embodiment of the present invention. 図2(A)は、本発明の実施形態に係る真偽鑑定方法の被検物である千円紙幣の全体図であり、図2(B)は、図2(A)のIIB部の要部X線透視像(写真)であり、図2(C)は、図2(A)のIIC部の要部X線透視像(写真)である。 2 (A) is an overall view of a 1000 yen note is a test object of authenticity appraisal method according to an embodiment of the present invention, principal of IIB of FIG. 2 (B), FIG. 2 (A) a section X-ray fluoroscopic image (photograph), FIG. 2 (C) is a IIC portion main unit X-ray fluoroscopic images of FIG. 2 (a) (photograph). 図3は、本発明の実施形態に係る真偽鑑定方法に用いられるテンプレートであり、図3(A)は、図2(B)に相当する部分であり、図3(B)は、図2(C)に相当する部分である。 Figure 3 is a template used in the authenticity appraisal method according to the embodiment of the present invention, FIG. 3 (A) is a part corresponding to FIG. 2 (B), the FIG. 3 (B), FIG. 2 a portion corresponding to (C).

符号の説明 DESCRIPTION OF SYMBOLS

1…X線検査装置 2…X線発生器 3…試料台 4…X線検出器 5…コンピュータ 6…モニタ10…紙幣 11…表面印刷部 12…裏面印刷部 13…透かし部20…テンプレート 21…表面図形 22…裏面図形 23…透かし図形 1 ... X-ray inspection apparatus 2 ... X-ray generator 3 ... sample stand 4 ... X-ray detector 5 ... Computer 6 ... monitor 10 ... bill 11 ... surface printing section 12 ... rear surface printing section 13 ... watermark portion 20 ... template 21 ... surface figure 22 ... back figure 23 ... watermark graphic

Claims (2)

  1. 表面及び/又は裏面が印刷された印刷物に対してX線を照射して、前記印刷物のX線透視像を撮像し、前記X線透視像に基づいて前記印刷物の真偽を鑑定する印刷物の真偽鑑定方法。 Surface and / or by irradiation with X-rays to the printed matter back surface is printed, capturing the X-ray fluoroscopic image of the printed matter, the true printed matter for appraisal authenticity of the printed material based on the X-ray fluoroscopic image false appraisal method.
  2. 前記印刷物は、透かし部が形成されている請求項1記載の印刷物の真偽鑑定方法。 The printed matter authenticity appraisal method of the printed matter according to claim 1, wherein the watermark portion is formed.
JP2003318873A 2003-09-10 2003-09-10 Authenticity examination method for printed matter Pending JP2005085163A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008149050A1 (en) * 2007-06-06 2008-12-11 De La Rue International Limited Apparatus for analysing a security document
CN101826230A (en) * 2010-05-05 2010-09-08 杨承然 X-ray bank note caba detecting and counting system
JP2011199441A (en) * 2010-03-18 2011-10-06 Ricoh Co Ltd Image processing device, program, and recording medium
US8472676B2 (en) 2007-06-06 2013-06-25 De La Rue International Limited Apparatus and method for analysing a security document

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008149050A1 (en) * 2007-06-06 2008-12-11 De La Rue International Limited Apparatus for analysing a security document
US8464875B2 (en) 2007-06-06 2013-06-18 De La Rue International Limited Apparatus for analysing a security document
US8472676B2 (en) 2007-06-06 2013-06-25 De La Rue International Limited Apparatus and method for analysing a security document
JP2011199441A (en) * 2010-03-18 2011-10-06 Ricoh Co Ltd Image processing device, program, and recording medium
CN101826230A (en) * 2010-05-05 2010-09-08 杨承然 X-ray bank note caba detecting and counting system

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