WO2002051643A1 - Authenticity discriminating printed matter and authenticity discriminating method - Google Patents
Authenticity discriminating printed matter and authenticity discriminating method Download PDFInfo
- Publication number
- WO2002051643A1 WO2002051643A1 PCT/JP2001/011395 JP0111395W WO02051643A1 WO 2002051643 A1 WO2002051643 A1 WO 2002051643A1 JP 0111395 W JP0111395 W JP 0111395W WO 02051643 A1 WO02051643 A1 WO 02051643A1
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- WO
- WIPO (PCT)
- Prior art keywords
- infrared
- reflectance
- printed
- image
- magnetic
- Prior art date
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/29—Securities; Bank notes
Definitions
- the present invention provides: , Various tickets, other securities, etc., which have a monetary value and require advanced counterfeit prevention and authenticity discrimination means, are difficult to forge, and even if they imitate and counterfeit the superficial printing form,
- the present invention relates to an authenticity discriminating printed matter which can be easily discriminated by the authenticity discriminating method according to the present invention, and a method for discriminating the authenticity thereof.
- Banknotes, stock certificates and other securities have a monetary value, so it is necessary to apply forgery and tampering prevention technologies to guarantee and maintain their value and security.
- forgery is made difficult by adopting a special technology for printing patterns such as watermarks on paper, special color inks, and fine characters, and ultraviolet light is emitted by using light-emitting ink.
- the method of visualizing an arbitrary information image by irradiation is incorporated to ensure the safety of the printed matter.
- Japanese Unexamined Patent Publication (Kokai) No. 63-144,075 proposes a true / false discrimination printed matter and a true / false discrimination method using two types of inks having different infrared reflection / absorption characteristics that are difficult to discern with the naked eye. Have been.
- Japanese Patent Application Laid-Open No. 3-252910 proposes a method for determining the authenticity of a magnetic medium by detecting the magnetic characteristics of the magnetic medium on which information is written with a magnetic material. I have.
- the present invention provides an authenticity discriminating printed matter and a method of authenticity discrimination which can be imitated at first glance, but are extremely difficult to forge, and which can easily determine the authenticity even if forged.
- the purpose is to provide. Overview of the invention
- the authenticity discrimination print of the present invention is a true / false discrimination print including at least a first print image and a second print image on at least a part of the design, wherein the first print image has an infrared reflection. Is formed using an ink containing a magnetic material having a reflectance of 30% or more, the reflectance of infrared light is 30% or more, the magnetic material has a predetermined magnetic intensity, and the second print image is formed.
- the reflectance of the infrared light has a difference of 10% or more from the first printed image, and has substantially the same magnetic intensity as the predetermined magnetic intensity.
- the authenticity discrimination print of the present invention is characterized in that the first print image is formed using an ink containing a magnetic material having a reflectance of 30% or more of infrared light, so that The reflectance is at least 30%, has a predetermined magnetic intensity, and the second printed image has a reflectance of at least 10% or more outside the red and the first printed image; Having a magnetic intensity different from that of
- the one with a relatively lower reflectance in the infrared portion is relatively It has a high magnetic strength.
- the authenticity discrimination printed matter of the present invention is characterized in that the first printed image is formed using an ink containing a magnetic material having a reflectance of 30% or more in the infrared, so that the reflectance of the red Has a predetermined magnetic intensity of 30% or more, and the second printed image has a difference of 10% or more in reflectance of infrared light from the first printed image, and the predetermined magnetic intensity Has a magnetic strength different from the strength,
- the one having a relatively high reflectance in the infrared region has a relatively high magnetic intensity.
- the authenticity discrimination print of the present invention is characterized in that the first printed image is formed by using an ink containing a magnetic material having an reflectivity of 30% or more of the infrared, and thereby the reflectivity of the infrared Is not less than 30%, has a predetermined magnetic intensity, and the second printed image has substantially the same reflectance of an infrared portion as the first printed image, and is lower than the predetermined magnetic intensity. It is characterized by having strength.
- the first printed image is formed by using an ink containing a magnetic material having a reflectance of 30% or more of infrared light, so that the reflection of infrared light Ratio is 30% or more, has a predetermined magnetic strength, has a predetermined transmission amount in the infrared region, and has a second printed image whose infrared reflectance is equal to that of the first printed image. It is characterized by having a difference of 0% or more, having substantially the same magnetic intensity as the predetermined magnetic intensity, and having substantially the same transmission amount as that of the predetermined infrared portion.
- the authenticity discrimination printed material of the present invention is characterized in that the first printed image is formed using an ink containing a magnetic material having a reflectance of 30% or more in the infrared, so that the reflectance of the red Has a predetermined magnetic intensity of 30% or more, and the second printed image has a difference of 10% or more in reflectance of infrared light from the first printed image, and the predetermined magnetic intensity Has a magnetic strength different from the strength,
- the one having a relatively low reflectance in the infrared portion has a relatively high magnetic intensity
- the one having a relatively low reflectance in the infrared portion has a relatively small magnetic intensity. It is characterized by having a transmission amount in the infrared region.
- the authenticity discrimination print of the present invention is characterized in that the first print image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more.
- the infrared light has a reflectance of 30% or more, has a predetermined magnetic intensity, has a predetermined amount of transmission in the infrared region, and the second printed image has a reflectance of the infrared light of the first.
- the first and second printed images are characterized in that the one having a relatively high reflectance in the infrared region has a relatively high magnetic intensity.
- the authenticity discrimination print of the present invention is characterized in that the first printed image is formed by using an ink containing a magnetic material having an reflectivity of 30% or more of the infrared, and thereby the reflectivity of the infrared Is not less than 30%, has a predetermined magnetic intensity, has a predetermined transmission amount in the infrared region, and the second printed image has an infrared reflectance substantially the same as that of the first printed image. Yes, it has a magnetic intensity lower than the predetermined magnetic intensity, and has a transmission amount of the infrared portion larger than the transmission amount of the predetermined infrared portion.
- the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more. Is not less than 30%, has a predetermined magnetic intensity, is printed on the back side by an ink that absorbs light in the infrared region, has a predetermined transmission amount in the infrared region, and has the second printed image.
- the infrared reflectivity has a difference of 10% or more from the first printed image, has a magnetic intensity different from the predetermined magnetic intensity, and has an infrared portion substantially the same as the predetermined infrared portion. It is characterized by having a transmission amount, and of the first and second print images, the one having a relatively low reflectance in the infrared region has a relatively high magnetic intensity.
- the authenticity discrimination print of the present invention is characterized in that the first printed image is formed by using an ink containing a magnetic material having an reflectivity of 30% or more of the infrared, and thereby the reflectivity of the infrared Is not less than 30%, has a predetermined magnetic intensity, has a predetermined transmission amount in the infrared region, and the second printed image has an infrared reflectance substantially the same as that of the first printed image. And having a magnetic intensity lower than the predetermined magnetic intensity, the back surface being printed with an ink that absorbs light in the infrared region, and having a transmission amount of the infrared region substantially equal to the transmission amount of the predetermined infrared region. It is characterized by having.
- the printed matter includes at least a first print image and a second print image in at least a part of a design, and the first print image is an infrared light.
- the second print image is formed using an ink containing a first magnetic material having a reflectance of 30% or more, and the reflectance of infrared light is 10% or more that of the first magnetic material.
- the second printed image is formed using an ink containing a second magnetic material having a difference between the first and second printed images. It is characterized in that the authenticity of printed matter is determined by detecting and collating.
- the authenticity of the printed matter may be determined by detecting and collating the optical information of the visible light portion in addition to the reflectivity and the magnetic intensity of the infrared light.
- the authenticity of the printed matter may be determined by detecting and comparing the amount of transmission of infrared light in addition to the reflectivity and magnetic intensity of infrared light.
- the method for determining the authenticity of a printed matter according to the present invention includes the steps of detecting and comparing the amount of transmission of the infrared light in addition to the reflectance, magnetic intensity, and optical information of the visible light portion of the infrared light to perform collation. The authenticity determination may be performed.
- FIG. 1 shows the composition of the ink used in Example 1.
- FIG. 2 shows the composition of the ink used in Example 2.
- FIG. 3 shows the composition of the ink used in Example 3.
- FIG. 4 shows the composition of the ink used in Example 4.
- FIG. 5 shows the authenticity discrimination printed matter in each embodiment.
- FIG. 6 shows the spectral reflectance of the solid ink film of Example 1.
- FIG. 7 shows the spectral reflectance of an image composed of an intaglio image by the intaglio ink of Example 1.
- FIG. 8 shows the output voltage relative values of the infrared absorption type intaglio intaglio image of the first embodiment.
- FIG. 9 shows the output voltage relative values of the infrared reflection intaglio intaglio image of the first embodiment.
- FIG. 10 shows the spectral reflectance of the solid ink film of Example 2.
- FIG. 11 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 2.
- FIG. 12 shows the output voltage relative value of the infrared absorption type intaglio image of Example 2.
- FIG. 13 shows the output voltage relative value of the infrared reflection type intaglio image of the second embodiment.
- FIG. 14 shows the spectral reflectance of the ink film of Example 3.
- FIG. 15 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 3.
- FIG. 16 shows the output voltage relative value of the infrared-emission intaglio intaglio image of the third embodiment.
- FIG. 17 shows the output voltage relative value of the infrared reflection type intaglio image of the third embodiment.
- FIG. 18 shows the spectral reflectance of the black ink film of Example 4.
- FIG. 19 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 4.
- FIG. 20 shows the output voltage relative values of the infrared absorption type intaglio image of Example 4.
- FIG. 21 shows the output voltage relative value of the infrared reflection type intaglio image of the fourth embodiment.
- FIG. 22 shows the reflectance and the magnetic intensity in Examples 1 to 4.
- FIG. 23 shows the composition of the ink used in Example 5.
- FIG. 24 shows the spectral reflectance of the base ink film of Example 5.
- FIG. 25 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 5.
- FIG. 26 shows the output voltage relative value of the infrared reflection intaglio intaglio image of the fifth embodiment.
- FIG. 27 shows an output voltage relative value of an infrared reflection intaglio intaglio image of the sixth embodiment.
- FIG. 28 shows the composition of the ink used in Example 6.
- FIG. 29 shows the spectral reflectance of the solid ink film of Example 6.
- FIG. 30 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 6.
- FIG. 31 shows the output voltage relative value of the infrared reflection intaglio intaglio image of the sixth embodiment.
- FIG. 32 shows the output voltage relative values of the infrared reflection intaglio intaglio image of the sixth embodiment.
- FIG. 33 shows the composition of the ink used in Example 7.
- FIG. 34 shows the formulation of the IR absorbing ink applied to the back side.
- FIGS. 35A and 35B are front views of the authenticity printed matter in each embodiment.
- FIG. 36 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 7.
- FIG. 37 shows the output voltage relative value of the infrared absorption type intaglio intaglio image of the seventh embodiment.
- FIG. 38 shows the output voltage relative value of the infrared reflection intaglio intaglio image of the seventh embodiment.
- FIG. 39 shows the formulation of the ink used in Example 9.
- FIG. 40 shows the transmission amount of the infrared region in the infrared image of the infrared absorption type and the reflection type in Example 1.
- FIG. 41 shows the amount of transmission in the infrared region of the ink image of the infrared absorption type and the reflection type in Example 2.
- FIG. 42 shows the transmission amount of the infrared region in the ink image of the infrared absorption type and the reflection type in Example 3.
- FIG. 43 shows the transmission amount of the infrared region in the infrared absorption type and the reflection type of the ink image of Example 1.
- FIG. 44 shows the transmission amount in the infrared region in the ink image of the infrared absorption type and the reflection type in Example 2.
- FIG. 45 shows the transmission amount of infrared light in the ink image of the infrared absorption type and the reflection type in Example 6.
- FIG. 46 shows the amount of transmission in the infrared region of the ink image of the infrared absorption type and the reflection type in Example 7.
- FIG. 47 shows the transmission amount of the infrared region in the infrared absorption type and reflection type ink lines of Example 8.
- FIG. 48 shows the transmission amount of the infrared region in the infrared absorption type and reflection type ink image of Example 9.
- Spectral reflectance of solid ink film of intaglio magnetic ink of infrared absorption type Spectral reflectance of intaglio magnetic ink solid ink film of infrared reflection type.
- Spectral reflectance of solid ink film of intaglio magnetic ink of infrared absorption type Spectral reflectance of black ink film of intaglio magnetic ink of infrared reflection type.
- Magnetic intensity relative value of intaglio magnetic image of infrared outside reflection type Spectral reflectivity of intaglio magnetic ink film of infrared reflection type intaglio magnetic ink
- a printed material combining a magnetic image region exhibiting reflection characteristics in the infrared region and a magnetic image region exhibiting absorption characteristics in the infrared region is a printed material that cannot be realized with general magnetic materials. If a real printed matter is realized, it becomes a true / false discrimination printed matter that is extremely difficult to imitate and forge.
- the inventor of the present invention has found that it is possible to increase the reflectance in the infrared region by using an ink containing a magnetic material having a higher infrared reflectance than a commonly used magnetic material. Accordingly, the inventors have proposed the authenticity discrimination printed matter and the authenticity discrimination method of the present invention.
- the authenticity discrimination printed material according to the embodiment of the present invention described below uses at least two types of printing using a general magnetic material having an absorption characteristic in an infrared region and a magnetic material having a reflection characteristic as described later. At least one of the reflection / absorption characteristics of the infrared region and the magnetic intensity in the image is set to be different.
- the authenticity discrimination method according to the embodiment of the present invention measures the magnetic intensity, the optical information in the infrared, or the optical information in the visible light range of each of the two types of printed images, and sets the information in advance. By comparing and comparing the printed information with the true information, the authenticity of the printed matter is determined.
- the magnetic material to be mixed with the ink used to form a printed image having a high infrared reflectance is a general black, black-gray or brownish magnetic material having a low infrared reflectance. Unlike this, a magnetic material with a relatively high infrared reflectance is used.
- magnetic materials to be combined with the ink used to form a printed image with low reflectance in the infrared region include general black, black-gray and brownish magnetic materials having a low infrared reflectance. Is used.
- a magnetic material with a relatively high reflectivity in the infrared region and a low reflectivity of the infrared Pigments may be used.
- Relatively-infrared magnetic material having high reflectance of the magnetic material in the particle diameter 0. Lm ⁇ 2 0 m of within range as nuclei, Si0 2, Ag, by cladded with TiOz, CIE-L
- * a * b * is 70 or more
- a * is 2 to 2
- b * is 0 to 15.
- the magnetic material serving as the core of the magnetic material may be any magnetic material that can be used for a magnetic printing ink for forming a magnetic printing pattern as generally used for a method of mechanically reading a magnetic signal.
- Iron oxide materials, Co-containing iron oxides, metal powders such as CrO 2 and iron, and magnetic materials such as Ba ferrite are conceivable.
- the magnetic material serving as the coating core of the magnetic material is not limited to this, and any material and shape may be used as long as it has magnetism and can be used as a pigment for printing ink.
- the material to be coated around the core magnetic material is preferably, but is not limited to, si 2 , Ag , and Ti.
- the material include organic pigments, zirconium dioxide, cerium dioxide, and oxides. Zinc, nitrous oxide, indium oxide, tin oxide, a mixture of tin oxide and indium oxide, aluminum oxide, magnesium oxide, and metals such as aluminum, titanium, nickel, iron, and other alloys. Inorganic materials.
- the method of coating the nuclear magnetic material with the coating material is most preferably performed by a sol-gel method by hydrolysis of metal alkoxide, but the method of coating is not limited to this, and the method of coating and vapor deposition, sputtering Any means may be used as long as it performs a surface treatment such as a coating method and a plating method.
- each of the geometrical thickness of the cladding material in the present 'invention, Si0 2 is 1 0
- the thickness of various materials is not limited to this, and each coating
- the number of layers may be at least one or more.
- the finally obtained magnetic material is Any structure may be used as long as it has a high reflectance of 30% or more.
- the proportion of the magnetic material to be mixed in the ink should be 5% or more based on the total amount of the ink. It is desirable to do.
- the difference between the reflectances of the infrared region between the two types of printed images is preferably at least 10% in order to obtain a good SN ratio suitable for mechanical processing, and the reflectance of the infrared region is relatively high. It is desirable that the reflectivity of the infrared region be 30% or more for a printed image having a very high intensity. If the difference between the reflectances of the infrared portions of the two types of printed images is less than 10%, the degree of dependence on the sensitivity of the detection device increases, and it is difficult for a detector with low detection accuracy to detect the difference There are cases.
- the two types of printed images may be capable of easily distinguishing their colors with the naked eye, or may be difficult to distinguish.
- the magnetic intensities of the two types of printed images are substantially the same or a relative difference to the extent that machine reading is possible, and the measured values of the reflectance in the infrared region are substantially the same or a relative difference. Anything is fine.
- the color of the ink used when forming two types of print images may be any color.
- the types of pigments used in the ink are, for example, blue powder, inorganic powders such as ultramarine, navy blue (Prussian blue), cobalt bull, etc., and phthalocyanine-based, sullen-based, azo-based and anthraquinone-based powders.
- Inorganic pigments such as yellow chrome yellow, cadmium yellow and titanium yellow, and organic pigments belonging to CI pigment yellow such as quinophthalone and azoisoindoline, and inorganic powders such as cobalt purple and manganese purple as purple pigments
- CI pigments such as oxazines, azos, and anthraquinones
- coloring pigments include inorganic pigments such as chrome green and conoretogrine and organic pigments belonging to CI pigment green such as phthalocyanine
- white pigments include titanium oxide pigments, and extender pigments , Barium sulfate, alumina white, silicon oxide, calcium phosphate and calcium carbonate pigments can be used.
- a colorant having an arbitrary color tone can be adjusted by combining several colors of these powders.
- known colored inks such as offset ink and gravure ink used in general printing can be used as the colored material.
- pigments used in the formation of images with relatively high reflectance in the infrared region must be used in consideration of the reflectance in the infrared, and pigments with low reflectance in the infrared must be used. Is not desirable.
- the varnish serving as an ink binder used in the present invention is a varnish that disperses the pigment and the like to form a print image, and the type thereof is not particularly limited.
- Resin can be used.
- the resins used for such ink varnishes include acrylic resins, polyester resins, alkyd resins, rosin-modified phenol resins, silicone resins, and fluororesins as basic resins, and cross-linking of amino resins or isocyanate compounds as necessary.
- a thermoplastic resin obtained by mixing an agent.
- UV-curable and electron-beam, ie EB-curable resins having an epoxy ring, an oxenyl group, an acryloyl group and a methacryloyl group.
- resins for paint such as two-component polyurethane resin and two-component silicone resin that dry or cure at room temperature can also be used.
- One type of these ingredients may be used alone, or two or more types may be used in combination.
- any method may be used as long as it is a means for forming a film.
- any method such as gravure printing, offset printing, screen printing, intaglio printing, flexographic printing, a known printing method, a spray method used for sheet metal painting, a method of forming a film such as a press method, etc. may be used. be able to.
- FIG. 1 shows the composition of each ink (infrared absorption type and infrared reflection type) used in two types of printed images in Example 1. These two types of inks are infrared Although the reflection and absorption characteristics of the parts are different, the magnetic strength is almost the same, and it is a dark green intaglio that cannot distinguish colors easily from each other visually.
- FIG. 2 shows the composition of each ink (infrared absorption type and infrared reflection type) used in two types of printed images in Example 2. Although these two types of inks have different infrared absorption and absorption characteristics, they have almost the same magnetic strength, and they can easily distinguish colors from each other visually. It is a type intaglio ink.
- FIG. 3 shows the composition of each ink (infrared absorption type and infrared reflection type) used in two types of printed images in Example 3.
- the two types of ink differ in the reflection and absorption characteristics of the infrared region, and also in the magnetic strength.
- An ink with a relatively high red reflectance has a higher magnetic strength and is a dark green intaglio that cannot easily distinguish colors visually.
- FIG. 4 shows the composition of each ink (infrared absorption type and infrared reflection type) used in two types of printed images in Example 4.
- These two types of inks differ in both the reflection and absorption characteristics of the infrared region and the magnetic intensity. The higher the reflectance in the infrared region, the higher the magnetic intensity, and the brown color that makes it easy to visually distinguish colors from each other.
- the system is an infrared absorption intaglio ink and a dark green infrared reflection type intaglio ink. Next, the results of measuring the spectral reflectance and the magnetic intensity of Examples 1 to 4 will be described.
- authenticity intaglio printed matter 1 shown in FIG. 5 was produced.
- the authenticity intaglio printed matter 1 has magnetic images 2 and 3.
- the spectral reflectance was measured for each of images 2 and 3.
- Images 2 and 3 were printed with intaglio printing using different magnetic intaglio inks, using an intaglio printing surface with an image width of 10 ⁇ ⁇ , an image pitch of 3 0 0 111, and an image depth of 10 O zrn. ing.
- the magnetic intensity of each intaglio image in images 2 and 3 was detected by a magnetic detection head and converted to an electric signal to obtain a relative value.
- FIGS. 6 to 21 show the measurement data in each example, and FIG. 22 summarizes each example and the measurement results.
- a third party estimates to some extent intaglio images having two types of machine-readable magnetic intensities with different reflection and absorption characteristics of infrared portions, and a commercially available magnetic material is used. It is impossible to imitate the reflection and absorption characteristics of the two types of intaglio images in the infrared region, even if the magnetism is applied. Further, even if the difference between the reflectances of the infrared portions applied to the two types of intaglio images is provided by a commercially available pigment, it is impossible to simultaneously impart magnetic intensity to the two types of intaglio images.
- the appearance can be imitated by a computer, a scanner, or the like.
- a computer a scanner, or the like.
- the authenticity discrimination printed matter according to the fifth to eighth embodiments of the present invention and the discrimination method using the authenticity discrimination printed matter of each embodiment will be described.
- Example 5 The ink formulation used in Example 5 is shown in FIG.
- the features of the intaglio image formed by Example 5 are as follows.
- the reflection and absorption characteristics of the infrared region are almost the same, the magnetic intensities are clearly different from each other, and the colors cannot be easily distinguished from each other visually. Have been.
- the relative values of the magnetic intensities of the intaglio magnetic images of the infrared reflection type having a relatively small magnetic intensity produced in this example are shown in FIG.
- the relative values of the magnetic intensity of the intaglio magnetic image of the sample are shown in 33 in Figure 27.
- the use of a special white magnetic material having a high reflectance in the infrared region enables the use of an infrared reflection type ink having a high magnetic intensity.
- High reflectance in the infrared region which was impossible, and a clear magnetic strength It is possible to form two or more intaglio images having a difference. Even if a third party estimates the intaglio image having high reflectance in the infrared region and high magnetic strength to some extent, and imparts magnetism with a commercially available magnetic material or the like, It is impossible to imitate the reflection characteristics of the two types of intaglio images in the infrared region.
- FIG. 28 shows the ink composition used in Example 6.
- the sixth embodiment is similar to the fifth embodiment in the reflection characteristic and the magnetic intensity, and differs from the fifth embodiment in that the sixth embodiment is a different color system.
- Infrared reflection and absorption characteristics of the infrared region are almost the same, and their magnetic intensities are clearly different from each other. It is printed with Eve's intaglio ink.
- images 2 and 3 shown in FIG. 5 were produced in the same manner as in Example 5.
- the curves 34 and 35 in FIG. 29 show the spectral reflectance of the base ink (film thickness about 40 ⁇ m) of the ink used in this example.
- the relative magnetic intensity values of the intaglio magnetic image of the infrared reflection type with relatively small magnetic intensity produced in this example are shown in Fig. 31-38.
- the relative values of the magnetic intensity of the intaglio magnetic image are shown in FIG.
- the spectral reflectance of the infrared portion of the intaglio magnetic image is almost the same, and it is recognized that the infrared region is sufficiently high and the same by mechanical processing.
- the magnetic strength is relatively different, It can be seen that the difference can be detected.
- the use of a special white magnetic material having a high reflectivity in the infrared region enables the use of an infrared reflective ink having a high magnetic intensity. It is possible to form two or more types of intaglio images with high magnetic strength and a distinct difference in magnetic strength.
- FIG. 33 shows the ink composition used to form a printed image on the surface in this example.
- intaglio printed matter formed according to this embodiment are as follows. Infrared reflection and absorption characteristics are relatively different from each other, and magnetic intensities are relatively different. Intaglio images with relatively high reflectance in the infrared region have lower magnetic intensities, and colors can be easily distinguished visually. None Printed in two dark green intaglio inks.
- the back side of the intaglio printing image having a relatively low magnetic intensity and a high reflectance in the infrared region is printed with black ink shown in FIG. 34.
- intaglio printed matter shown in Fig. 35A and Fig. 35B was prepared.
- Objects 40 and 41 are formed on the front surface, and solid printing 42 is formed on the back side of printed object 41 on the front surface, and printed on area 43 on the back surface of printed object 41 on the front surface Is not formed.
- the relative magnetic strength of the intaglio magnetic image produced in this example which has a relatively high magnetic strength and a relatively low infrared reflectance, is shown in FIG.
- the magnetic intensity relative values of the intaglio magnetic image where the reflectance of the portion is relatively high are shown in FIG.
- the measurement results of this example show that there is a difference of 25% or more in the spectral reflectance of the infrared region between the two types of intaglio magnetic images, and that the magnetic intensities are significantly different. Thus, it is possible to detect a sufficiently relative difference.
- FIG. 23 shows the ink composition used to form the printed image on the surface used in Example 8.
- the reflectivity of the infrared region is almost the same, the magnetic intensities are clearly different from each other, and the ink is printed with a dark green infrared reflection type intaglio ink whose color cannot be easily distinguished from each other visually.
- black printing shown in Fig. 34 is applied to the back side of the printed image with relatively low magnetic intensity.
- intaglio objects shown in FIGS. 35A and 35B were produced in the same manner as in Example 7 above.
- Curves 30 and 31 of FIG. 25 show the spectral reflectances of the two types of intaglio magnetic images produced in this example.
- the relative values of the magnetic intensity of the intaglio magnetic image of the infrared region having a relatively small magnetic intensity and a high reflectance in the infrared region produced in this example are shown in FIG.
- the magnetic intensity relative values of the intaglio magnetic images with high values are shown in 33 in Figure 27.
- the spectral reflectance in the infrared region of the two types of intaglio magnetic images both showed 50% or more, and the magnetic intensities were relatively largely different. Can be detected.
- a black ink having an infrared absorption property shown in FIG. 34 is printed on the back surface of the intaglio image having relatively low magnetism and a high infrared reflectance.
- the reflection and absorption characteristics of the infrared portion, the magnetic strength, and the transmission characteristics of the infrared portion of the intaglio image are combined so as to obtain desired characteristics.
- the reflection characteristics and magnetic characteristics of the infrared region of the two types of intaglio images applied to the surface are estimated, and the reflection characteristics and magnetic characteristics of the infrared region applied to the two types of intaglio images are estimated using commercially available materials.
- the black ink is printed on the back surface of the intaglio print having relatively low magnetism and high reflectance in the infrared region, thereby changing the transmission characteristics of the infrared region in the print image area. Therefore, it is difficult to easily and completely imitate the combination of the infrared reflection, magnetic, and infrared transmission characteristics of the front and back images. Therefore, according to the present embodiment, it is possible to obtain a printed matter having a high forgery prevention effect.
- Example 7 both the infrared absorption characteristics and the magnetic intensity are relatively different, and the concave portion having a relatively high reflectance in the infrared region is used.
- the plate image shows lower magnetic strength, and is printed with two types of intaglio inks of greenish color, whose colors cannot be easily distinguished visually.
- black printing is applied to the back side of the intaglio printing image having a relatively low magnetic intensity and a high infrared reflectance.
- Example 9 the ink as shown in FIG. 39 was used, and both the reflection and absorption characteristics of the infrared and the magnetic strength were relatively different, and the infrared region was relatively different.
- An intaglio image with a high reflectance indicates a lower magnetic intensity, and is printed with two types of intaglio inks of brown and dark green, which can easily distinguish colors from each other visually.
- This authenticity discrimination method detects and compares the difference in the reflectance of the infrared region, the difference in the transmittance of the infrared region, and the difference in the magnetic intensity of the two types of images formed on the authenticity printed matter. Thus, the authenticity of the printed matter is determined.
- Curves 6 and 7 in FIG. 7 show the reflectances of the two types of intaglio images in the printed matter according to Example 1 above, and measured values of the magnetic properties are shown in FIGS. 8 and 9 in FIGS. Further, the results of evaluating the transmission characteristics of the infrared region of the two intaglio images are shown in FIGS. Here, the transmission characteristics of the infrared region in the intaglio image area were evaluated using the following IR transmission optical characteristic measurement method.
- the transmitted infrared LED (940nm) emits light, the amount of IR transmitted through the object to be measured is sampled by the image sensor, and the image is displayed to evaluate the transmission characteristics of the infrared part.
- the transmitted image signal in the infrared region collected by the image sensor is amplified, converted to digital data by analog / digital conversion, and displayed on a computer monitor image.
- the data is displayed, for example, at 0 to 255 gray levels.
- the IR light of the infrared LED is completely transmitted, it is displayed as a white image with 255/255 gradation and completely blocked. When it is covered, it is displayed as a black image with 0/255 gradation.
- the measured value used for the evaluation of the transmittance of the infrared was an average value within a 5 mm ⁇ 5 mm area where the intaglio streak is applied.
- the image area is defined as showing infrared transmittance, If it is less than that, it is defined as exhibiting infrared absorption (non-transmission).
- the transmission image of the infrared portion of the intaglio image region having a relatively low reflectance of the infrared portion is 1 16/255
- an intaglio with a relatively high reflectance in the infrared region The transmitted image in the infrared region of the image area is displayed as a monochrome gradation of 125/255 c.
- the optical information of the visible light portion, the difference in the reflectance of the infrared region, the difference in the transmittance, and the magnetic intensity of the two types of printed images included in the genuine printed matter are stored in advance, and the object to be determined is determined. Detects visible light optical information, difference in infrared reflectance, transmittance difference, and magnetic intensity of two types of printed images contained in a certain printed matter, and compares them with stored stored data of authentic printed matter. In this way, the authenticity of the printed matter can be determined, so that a fake printed matter imitated by a third party and a genuine printed matter can be sorted with high accuracy.
- Curves 12 and 13 in FIG. 11 show the reflectances of the infrared portions of the two types of intaglio images included in Example 2 above, and the measured values of the magnetic properties are shown in FIGS. See Figure 5. Furthermore, the results of evaluating the transmission characteristics of the infrared region of the two types of intaglio images are shown in 50 and 51 in FIG.
- the transmission image of the infrared portion in the intaglio image region having a relatively low reflectance of the infrared portion is a monochrome gradation of 1 16/255 Is displayed as
- a transmitted image in an intaglio image region having a relatively high reflectance in the infrared region is displayed as 125/255 monochrome gradation. Therefore, the two intaglio images of the intaglio printed matter obtained in the examples are both identified as infrared non-transparent images.
- the optical information of the visible light portion of the genuine printed matter, the difference in the reflectance in the infrared, the difference in the transmittance, and the magnetic intensity are stored in advance, and the optical information in the visible light portion of the two types of printed images, the infrared
- the difference in reflectance, the difference in transmittance, and the magnetic intensity By detecting and comparing the difference in reflectance, the difference in transmittance, and the magnetic intensity, it is possible to sort out a fake print imitated by a third party and a genuine print with high accuracy.
- Curves 18 and 19 in FIG. 15 show the reflectances of the two types of intaglio images of Example 3 in the infrared region, and measured values of the magnetic properties are shown in 20 in FIG. 16 and 21 in FIG. Furthermore, the results of evaluating the transmission characteristics of the two types of intaglio images in the infrared region are shown in FIGS.
- the transmission image of the infrared portion of the intaglio image region where the reflectance of the infrared portion is relatively low and the magnetic intensity is small is 1 16 / Displayed as monochrome gradation of 255.
- an IR transmission image in an intaglio image region having a relatively high reflectance and a high magnetic intensity in the infrared region is displayed as 125/255 monochromatic gradation. Therefore, the two types of intaglio images in the intaglio printed matter obtained in Example 3 are both identified as infrared non-transparent images.
- the visible light portion optical information of the genuine printed matter, the difference in the reflectance of the infrared region, the difference in the transmittance, and the magnetic intensity are stored in advance, and the visible light portion of the two types of printed images on the discrimination target is stored.
- Curves 24 and 25 in FIG. 19 show the reflectances of the two types of intaglio images in the printed matter prepared in accordance with Example 4 above, and the measured values of the magnetic properties thereof are shown in FIGS. This is shown at 27 in Figure 21. In addition, the results of evaluating the transmission characteristics in the infrared region of the two types of intaglio images are shown in FIGS.
- the transmission image of the infrared portion in the intaglio image region where the reflectance in the infrared portion is relatively low and the magnetic strength is small is 1 16 /
- the transmission image of the infrared part of the intaglio image area which has a relatively high reflectance and high magnetic strength in the infrared part, has a monochrome gradation of 125/255. Will be displayed as Therefore, the two types of intaglio images in the intaglio printed matter obtained according to Example 4 are both identified as infrared non-transparent images.
- the optical information of the visible light portion of the genuine printed matter, the difference in the reflectance of the infrared region, the difference in the transmittance, and the magnetic intensity are stored in advance, and the optical information of the visible light portion of the two types of printed images of the object to be discriminated, By detecting and comparing the difference in external reflectance, the difference in transmittance, and the magnetic intensity, it is possible to determine the authenticity of the printed matter.
- the reflectances of the infrared portions of the two intaglio images of Example 5 are shown in Figs. 24 and 30, respectively, and the measured values of the magnetic properties are shown in Fig. 25, 32 and Fig. 26, 33, respectively.
- the results of the evaluation of the transmission characteristics in the infrared region are shown in FIGS.
- the transmission image of the infrared portion of the intaglio image region having relatively low magnetic intensity is represented as a monochrome gradation of 1655/255.
- the transmitted image of the infrared portion of the intaglio image region having a relatively high magnetic strength is displayed as a monochrome gradation of 120/255. Accordingly, the two types of intaglio images of the intaglio print obtained in Example 5 are clearly identified as images having different infrared transmittances.
- the visible light optical information of the genuine printed matter, the difference in the reflectance of the infrared light, the difference in the transmittance, and the magnetic intensity are stored in advance, and the optical information of the visible light in the above two types of printed images is stored in the red external light.
- the transmission image of the infrared portion of the intaglio image region having relatively small magnetic intensity is represented by a monochrome gradation of 1655/255.
- Table The transmitted image of the infrared portion of the intaglio image region having a relatively high magnetic strength is displayed as a monochrome gradation of 120/255. Therefore, the two intaglio images of the intaglio print obtained in Example 6 are clearly identified as images having different infrared transmittances.
- the visible light optical information of the genuine printed matter, the difference in the reflectance of the infrared light, the difference in the transmittance, and the magnetic intensity are stored in advance, and the optical information of the visible light in the above two types of printed images is stored in the red external light.
- the transmission image of the infrared portion of the intaglio image region where the reflectance of the infrared portion is relatively low and the magnetic intensity is relatively high is 1 16 / It is displayed as a monochrome gradation of 255.
- the reflectance of the infrared region is relatively high, the magnetic strength is low, and the transmission image of the infrared region in the intaglio image area where the back surface is printed with the ink shown in Fig. 34 is 7 1/25 Displayed as 5 monochrome gradations.
- the two intaglio images of the intaglio printed matter obtained in Example 7 are both identified as infrared non-transparent images.
- the optical information of the visible light portion of the genuine printed matter, the difference in the reflectance of the infrared region, the difference in the transmittance, and the magnetic intensity are stored in advance, and the optical information of the visible light portion of the two types of printed images of the object to be discriminated, red By detecting and comparing the difference in external reflectance, the difference in transmittance, and the magnetic intensity, genuine printed matter can be sorted out.
- the measured values of the reflectance in the infrared region of the two intaglio images of Example 8 are shown in curves 30 and 31 of FIG. 25, and the measured values of the magnetic properties are shown in FIGS. 3 3 show it You.
- the results of evaluating the transmission characteristics of the infrared region in the two types of intaglio image areas are shown in FIGS.
- the transmission image of the infrared portion of the intaglio image region having relatively low magnetic strength has a monochrome gradation of 75/255.
- the transmitted image of the infrared portion of the intaglio image region having relatively high magnetic strength is displayed as a monochrome gradation of 120/255. Therefore, the two types of intaglio images of the intaglio printed matter obtained according to Example 8 are both identified as infrared non-transparent images.
- the optical information of the visible light portion of the genuine printed matter, the difference in the reflectance of the infrared region, the difference in the transmittance, and the magnetic intensity are stored in advance, and the light in the visible light portion of the two types of printed images of the discrimination target is stored. It is possible to determine the authenticity of the printed matter by detecting and comparing the scientific information, the difference in reflectance in the infrared, the difference in transmittance, and the magnetic intensity.
- the ink formulation used to form the printed image used in Example 9 is shown in FIG. Using this intaglio ink, an intaglio print 1 shown in FIG. 5 was produced.
- the two printing images 2 and 3 in the intaglio printed matter 1 formed according to the ninth embodiment have different reflection / absorption characteristics and magnetic strength in the infrared region, respectively, and have an intaglio image with a relatively high reflectance in the infrared region.
- the lower magnetic strength indicates that the colors are easily distinguishable from each other visually, and are printed with two types of intaglio inks of brownish and dark green.
- the spectral reflectance of the intaglio magnetic image in this case is shown by curves 44 and 45 in FIG.
- the relative magnetic strength of the intaglio magnetic image with relatively high magnetic strength and relatively low reflectance in the infrared region is shown in Figure 37-37.
- the relative values of the magnetic intensity of the intaglio magnetic image with the highest values are shown in Figure 38-47. Further, the results of evaluating the transmission characteristics of the infrared region of the two types of intaglio images are shown in FIGS.
- the transmission image of the infrared portion of the intaglio magnetic image region having relatively high magnetic strength and relatively low reflectance of the infrared portion is 1 1 6 2
- the transmission image of the infrared part of the intaglio magnetic image area which is displayed as a monochrome gradation of 55 and has relatively low magnetic intensity and relatively high reflectance in the infrared part, is a monochrome monochrome image of 16 2/255 Displayed as gradation. Therefore, the two types of intaglio images of the intaglio printed matter obtained in accordance with this embodiment can be clearly identified as images having different infrared transmittances.
- the visible light portion optical information of the genuine printed matter, the difference in the reflectivity of the infrared region, the difference in the transmittance, and the magnetic intensity are stored in advance, and the visible light portion optical information of the two types of printed images on the discrimination target are stored.
- the difference in reflectivity, the difference in transmittance, and the magnetic intensity of infrared radiation it is possible to sort out fake prints imitated by a third party and genuine prints with high accuracy.
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Abstract
An authenticity discriminating printed matter which is apparently imitable, and comprises a combination of a magnetic material having a reflecting characteristic in an IR region unlike a general magnetic and a general magnetic material having an absorbing characteristic in an IR region; and a method of discriminating the authenticity of such an authenticity discriminating printed matter. At least part of a pattern contains at least two print images, with a normal black magnetic material having an absorbing characteristic in an IR region used in one prit image and a white magnetic material having a reflecting characteristic in an IR region used in the other print image. At least either of reflectances and magnetic intensities in respective IR portions in two print images are relatively made different from each other by changing the amounts of respective magnetic materials to thereby making difficult the imitation and alteration of the pattern.
Description
明 細 書 真偽判別印刷物及び真偽判別方法 技 術 的 背 景 本発明は、 銀行券、 諸証券、 株券、 切符や定期券等の通行券、 有料道路等の回 数券、 旅券、 収入印紙、 各種チケット、 その他有価証券等、 金銭的価値を有する ため高度な偽造防止及び真偽判別手段を必要とする印刷物において、 偽造が困難 であり、 表面的な印刷形態を模倣及び偽造したとしても、 本発明による真偽判別 方法によって容易に真偽を判別し得る真偽判別印刷物及びその真偽判別方法に関 するものである。 Documents Authenticity printed matter and authenticity discrimination methodTechnical background The present invention provides: , Various tickets, other securities, etc., which have a monetary value and require advanced counterfeit prevention and authenticity discrimination means, are difficult to forge, and even if they imitate and counterfeit the superficial printing form, The present invention relates to an authenticity discriminating printed matter which can be easily discriminated by the authenticity discriminating method according to the present invention, and a method for discriminating the authenticity thereof.
銀行券、 株券或いはその他有価証券は金銭的価値を有するため、 その価値及び 安全性を保証 ·維持するべく、 偽造防止、 改竄防止技術を施す必要がある。 そこ で、 このような印刷物には、 用紙の透かしや特色インキ、 微小文字等の印刷の図 柄に特殊な技術を採用することによって偽造を困難にしたり、 発光ィンキ等を使 用することで紫外線照射により任意の情報画像を可視化する手法を盛り込んでそ の印刷物の安全性を確保するようにしている。 Banknotes, stock certificates and other securities have a monetary value, so it is necessary to apply forgery and tampering prevention technologies to guarantee and maintain their value and security. For such printed materials, forgery is made difficult by adopting a special technology for printing patterns such as watermarks on paper, special color inks, and fine characters, and ultraviolet light is emitted by using light-emitting ink. The method of visualizing an arbitrary information image by irradiation is incorporated to ensure the safety of the printed matter.
更に最近では、 上述したような視覚的な偽造防止技術の他に、 光学的或いは磁 気的信号の検出装置の進歩に伴い、 高性能の検出器を備えた真偽判別装置を用い ることで、 肉眼では判別することのできない機械処理対応の真偽判別技術を組み 込んだ印刷物も提供されている。 More recently, in addition to the above-described visual forgery prevention technology, with the progress of optical or magnetic signal detection devices, authenticity discrimination devices equipped with high-performance detectors have been used. Also, there is a printed matter that incorporates a machine processing genuineness discrimination technology that cannot be distinguished with the naked eye.
例えば、 特開昭 6 3 - 1 4 4 0 7 5号公報には、 肉眼では識別が困難な赤外部 反射吸収特性の異なる 2種類のィンキを用いた真偽判別印刷物及び真偽判別方法 が提案されている。 また、 特開平 3— 2 5 2 9 0 1号公報には、 磁気材料により 情報が書き込まれた磁気媒体の磁気特性を検出することで、 この磁気媒体の真偽 を判別する方法が提案されている。 For example, Japanese Unexamined Patent Publication (Kokai) No. 63-144,075 proposes a true / false discrimination printed matter and a true / false discrimination method using two types of inks having different infrared reflection / absorption characteristics that are difficult to discern with the naked eye. Have been. Also, Japanese Patent Application Laid-Open No. 3-252910 proposes a method for determining the authenticity of a magnetic medium by detecting the magnetic characteristics of the magnetic medium on which information is written with a magnetic material. I have.
しかし、 これらの手法はいずれも十分な真偽判別及び偽造防止手段であるとは 言えない。 用紙の透かし、 特色インキによる画線、 微小文字を利用したセキユリ
ティ画線は、 最近の高性能なコンビユー夕、 スキャナ、 カラ一コピー機の低価格 化及び一般への普及に伴い、 その偽造防止効果が疑問視されつつある。 また、 発 光ィンキによる真偽判別技術は、 バリエーション豊かな発光材料が一般市場にお いて流通していることを考えれば、 その偽造防止、 真偽判別効果は不十分である 更に、 単純な赤外領域に対して反射特性を有する印刷画線及び吸収特性を有す る印刷画線を組み合わせたものや、 磁気を有する画線も、 現在ではセキュリティ 印刷分野では一般的な技術となっている。 特に、 磁気画線についてはセキユリテ ィ印刷物に利用されていることが一般の者にも公知となっており、 一般市場で購 買できる材料を利用することによって、 本物と同程度の信号を付与させた印刷物 を簡単に製造することができ、 この種の偽造事件も発生している。 However, none of these methods can be said to be sufficient means for authenticity discrimination and forgery prevention. Water lilies, paper lines, special ink strokes, and small letters With the recent reduction in the price of high-performance convenience stores, scanners, and color copiers and their widespread use in the general public, the anti-counterfeiting effect has been questioned. In addition, the authenticity discrimination technology based on light-emitting light is not sufficiently effective in preventing forgery and authenticity, given that a wide variety of light-emitting materials are distributed in the general market. At present, the combination of printed objects that have reflection characteristics and absorption lines that have absorption characteristics with respect to the outer region, and images that have magnetism are also common technologies in the security printing field. In particular, it is well known to the general public that magnetic streaks are used for security prints, and by using materials that can be purchased in the general market, it is possible to give the same level of signal as the real ones. Printed products can be easily manufactured, and this type of counterfeiting has occurred.
このように、 従来の偽造防止技術や印刷物の真偽判別技術では、 最近の材料及 び電子技術の発達に伴い、 満足し得るものではなくなつている。 As described above, conventional anti-counterfeiting technology and authenticity determination technology for printed matter are no longer satisfactory with the recent development of materials and electronic technologies.
本発明は上記事情に鑑み、 一見すると模倣可能ではあるが、 偽造が極めて困難 であり、 また偽造したとしても容易に真偽を判別することが可能な真偽判別印刷 物及び真偽判別方法を提供することを目的とする。 発 明 の 概 要 In view of the above circumstances, the present invention provides an authenticity discriminating printed matter and a method of authenticity discrimination which can be imitated at first glance, but are extremely difficult to forge, and which can easily determine the authenticity even if forged. The purpose is to provide. Overview of the invention
本発明の真偽判別印刷物は、 図柄の少なくとも一部に、 少なくとも第 1の印刷 画像と第 2の印刷画像を含む真偽判別印刷物であって、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するインクを用いて形成されている ことにより、 赤外部の反射率が 3 0 %以上で、 所定の磁気強度を有し、 前記第 2 の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の差を有し、 前記所定の磁気強度と略同一の磁気強度を有することを特徴とする。 The authenticity discrimination print of the present invention is a true / false discrimination print including at least a first print image and a second print image on at least a part of the design, wherein the first print image has an infrared reflection. Is formed using an ink containing a magnetic material having a reflectance of 30% or more, the reflectance of infrared light is 30% or more, the magnetic material has a predetermined magnetic intensity, and the second print image is formed. The reflectance of the infrared light has a difference of 10% or more from the first printed image, and has substantially the same magnetic intensity as the predetermined magnetic intensity.
また、 本発明の真偽判別印刷物は、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するインクを用いて形成されていることにより、 赤外 部の反射率が 3 0 %以上で、 所定の磁気強度を有し、 前記第 2の印刷画像が、 赤 外部の反射率が前記第 1の印刷画像と 1 0 %以上の差を有し、 前記所定の磁気強 度と異なる磁気強度を有し、 In addition, the authenticity discrimination print of the present invention is characterized in that the first print image is formed using an ink containing a magnetic material having a reflectance of 30% or more of infrared light, so that The reflectance is at least 30%, has a predetermined magnetic intensity, and the second printed image has a reflectance of at least 10% or more outside the red and the first printed image; Having a magnetic intensity different from that of
前記第 1、 第 2の印刷画像のうち、 相対的に赤外部の反射率が低い方が相対的
に高い磁気強度を有することを特徴とする。 Of the first and second print images, the one with a relatively lower reflectance in the infrared portion is relatively It has a high magnetic strength.
あるいは本発明の真偽判別印刷物は、 前記第 1の印刷画像が、 赤外部の反射率 が 3 0 %以上の磁性材を含有するインクを用いて形成されていることにより、 赤 外部の反射率が 3 0 %以上で、 所定の磁気強度を有し、 前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の差を有し、 前記所定の磁気 強度と異なる磁気強度を有し、 Alternatively, the authenticity discrimination printed matter of the present invention is characterized in that the first printed image is formed using an ink containing a magnetic material having a reflectance of 30% or more in the infrared, so that the reflectance of the red Has a predetermined magnetic intensity of 30% or more, and the second printed image has a difference of 10% or more in reflectance of infrared light from the first printed image, and the predetermined magnetic intensity Has a magnetic strength different from the strength,
前記第 1、 第 2の印刷画像のうち、 相対的に赤外部の反射率が高い方が相対的 に高い磁気強度を有することを特徴とする。 In the first and second printed images, the one having a relatively high reflectance in the infrared region has a relatively high magnetic intensity.
また本発明の真偽判別印刷物は、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィンクを用いて形成されていることにより、 赤外部 の反射率が 3 0 %以上で、 所定の磁気強度を有し、 前記第 2の印刷画像が、 赤外 部の反射率が前記第 1の印刷画像と略同一であり、 前記所定の磁気強度より低い 磁気強度を有することを特徴とする。 Further, the authenticity discrimination print of the present invention is characterized in that the first printed image is formed by using an ink containing a magnetic material having an reflectivity of 30% or more of the infrared, and thereby the reflectivity of the infrared Is not less than 30%, has a predetermined magnetic intensity, and the second printed image has substantially the same reflectance of an infrared portion as the first printed image, and is lower than the predetermined magnetic intensity. It is characterized by having strength.
さらに本発明の真偽判別印刷物は、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するインクを用いて形成されていることにより、 赤外 部の反射率が 3 0 %以上で、 所定の磁気強度を有し、 所定の.赤外部の透過量を有 し、 前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上 の差を有し、 前記所定の磁気強度と略同一の磁気強度を有し、 前記所定の赤外部 の透過量と略同一の性外部の透過量を有することを特徴とする。 Further, in the authenticity discrimination printed material of the present invention, the first printed image is formed by using an ink containing a magnetic material having a reflectance of 30% or more of infrared light, so that the reflection of infrared light Ratio is 30% or more, has a predetermined magnetic strength, has a predetermined transmission amount in the infrared region, and has a second printed image whose infrared reflectance is equal to that of the first printed image. It is characterized by having a difference of 0% or more, having substantially the same magnetic intensity as the predetermined magnetic intensity, and having substantially the same transmission amount as that of the predetermined infrared portion.
あるいは本発明の真偽判別印刷物は、 前記第 1の印刷画像が、 赤外部の反射率 が 3 0 %以上の磁性材を含有するィンクを用いて形成されていることにより、 赤 外部の反射率が 3 0 %以上で、 所定の磁気強度を有し、 前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の差を有し、 前記所定の磁気 強度と異なる磁気強度を有し、 Alternatively, the authenticity discrimination printed material of the present invention is characterized in that the first printed image is formed using an ink containing a magnetic material having a reflectance of 30% or more in the infrared, so that the reflectance of the red Has a predetermined magnetic intensity of 30% or more, and the second printed image has a difference of 10% or more in reflectance of infrared light from the first printed image, and the predetermined magnetic intensity Has a magnetic strength different from the strength,
前記第 1、 第 2の印刷画像のうち、 相対的に赤外部の反射率が低い方が相対的 に高い磁気強度を有し、 相対的に赤外部の反射率が低い方が相対的に少ない赤外 部の透過量を有することを特徴とする。 Of the first and second printed images, the one having a relatively low reflectance in the infrared portion has a relatively high magnetic intensity, and the one having a relatively low reflectance in the infrared portion has a relatively small magnetic intensity. It is characterized by having a transmission amount in the infrared region.
あるいはまた、 本発明の真偽判別印刷物は、 前記第 1の印刷画像が、 赤外部の 反射率が 3 0 %以上の磁性材を含有するインクを用いて形成されていることによ
り、 赤外部の反射率が 3 0 %以上で、 所定の磁気強度を有し、 所定の赤外部の透 過量を有し、 前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の差を有し、 前記所定の磁気強度と異なる磁気強度を有し、 前記所定の 赤外部の透過量と略同一の赤外部の透過量を有し、 前記第 1、 第 2の印刷画像の うち、 相対的に赤外部の反射率が高い方が相対的に高い磁気強度を有することを 特徴とする。 Alternatively, the authenticity discrimination print of the present invention is characterized in that the first print image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more. The infrared light has a reflectance of 30% or more, has a predetermined magnetic intensity, has a predetermined amount of transmission in the infrared region, and the second printed image has a reflectance of the infrared light of the first. Having a difference of 10% or more from the printed image of the above, having a magnetic intensity different from the predetermined magnetic intensity, having a transmission amount of an infrared portion substantially equal to the predetermined infrared transmission amount, The first and second printed images are characterized in that the one having a relatively high reflectance in the infrared region has a relatively high magnetic intensity.
また本発明の真偽判別印刷物は、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィンクを用いて形成されていることにより、 赤外部 の反射率が 3 0 %以上で、 所定の磁気強度を有し、 所定の赤外部の透過量を有し、 前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と略同一であり、 前記所定の磁気強度より低い磁気強度を有し、 前記所定の赤外部の透過量より多 い赤外部の透過量を有することを特徴とする。 Further, the authenticity discrimination print of the present invention is characterized in that the first printed image is formed by using an ink containing a magnetic material having an reflectivity of 30% or more of the infrared, and thereby the reflectivity of the infrared Is not less than 30%, has a predetermined magnetic intensity, has a predetermined transmission amount in the infrared region, and the second printed image has an infrared reflectance substantially the same as that of the first printed image. Yes, it has a magnetic intensity lower than the predetermined magnetic intensity, and has a transmission amount of the infrared portion larger than the transmission amount of the predetermined infrared portion.
本発明の真偽判別印刷物は、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 % 以上の磁性材を含有するインクを用いて形成されていることにより、 赤外部の反 射率が 3 0 %以上で、 所定の磁気強度を有し、 裏面側に赤外部の光を吸収するィ ンクにより印刷が施されて所定の赤外部の透過量を有し、 前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の差を有し、 前記所定の磁気 強度と異なる磁気強度を有し、 前記所定の赤外部と略同一の赤外部の透過量を有 し、 前記第 1、 第 2の印刷画像のうち、 相対的に赤外部の反射率が低い方が相対 的に高い磁気強度を有することを特徴とする。 In the authenticity discrimination print of the present invention, the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more. Is not less than 30%, has a predetermined magnetic intensity, is printed on the back side by an ink that absorbs light in the infrared region, has a predetermined transmission amount in the infrared region, and has the second printed image. However, the infrared reflectivity has a difference of 10% or more from the first printed image, has a magnetic intensity different from the predetermined magnetic intensity, and has an infrared portion substantially the same as the predetermined infrared portion. It is characterized by having a transmission amount, and of the first and second print images, the one having a relatively low reflectance in the infrared region has a relatively high magnetic intensity.
また本発明の真偽判別印刷物は、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィンクを用いて形成されていることにより、 赤外部 の反射率が 3 0 %以上で、 所定の磁気強度を有し、 所定の赤外部の透過量を有し、 前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と略同一であり、 前記所定の磁気強度より低い磁気強度を有し、 裏面側に赤外部の光を吸収するィ ンクにより印刷が施されて前記所定の赤外部の透過量と略同一の赤外部の透過量 を有することを特徴とする。 Further, the authenticity discrimination print of the present invention is characterized in that the first printed image is formed by using an ink containing a magnetic material having an reflectivity of 30% or more of the infrared, and thereby the reflectivity of the infrared Is not less than 30%, has a predetermined magnetic intensity, has a predetermined transmission amount in the infrared region, and the second printed image has an infrared reflectance substantially the same as that of the first printed image. And having a magnetic intensity lower than the predetermined magnetic intensity, the back surface being printed with an ink that absorbs light in the infrared region, and having a transmission amount of the infrared region substantially equal to the transmission amount of the predetermined infrared region. It is characterized by having.
ここで、 前記第 1、 第 2の印刷画像は、 肉眼で色彩を相対的に識別することが 困難であってもよく、 あるいは容易であってもよい。
本発明の印刷物の真偽判別を行う方法は、 前記印刷物が、 図柄の少なくとも一 部に、 少なくとも第 1の印刷画像と第 2の印刷画像を含み、 前記第 1の印刷画像 が、 赤外部の反射率が 3 0 %以上の第 1の磁性材を含有するインクを用いて形成 されており、 前記第 2の印刷画像が、 赤外部の反射率が前記第 1の磁性材と 1 0 %以上の差を有する第 2の磁性材を含有するインクを用いて形成されており、 こ の印刷物に対し、 前記第 1、 第 2の印刷画像のそれそれの赤外部の反射率及び磁 気強度を検出して照合することによって、 印刷物の真偽判別を行うことを特徴と する。 Here, in the first and second printed images, it may be difficult or relatively easy to distinguish colors with the naked eye. In the method of determining the authenticity of a printed matter according to the present invention, the printed matter includes at least a first print image and a second print image in at least a part of a design, and the first print image is an infrared light. The second print image is formed using an ink containing a first magnetic material having a reflectance of 30% or more, and the reflectance of infrared light is 10% or more that of the first magnetic material. The second printed image is formed using an ink containing a second magnetic material having a difference between the first and second printed images. It is characterized in that the authenticity of printed matter is determined by detecting and collating.
ここで、 赤外部の反射率及び磁気強度に加えて、 可視光部の光学情報を検出し て照合することにより、 印刷物の真偽判別を行ってもよい。 Here, the authenticity of the printed matter may be determined by detecting and collating the optical information of the visible light portion in addition to the reflectivity and the magnetic intensity of the infrared light.
あるいは、 赤外部の反射率及び磁気強度に加えて、 赤外部の透過量を検出して 照合することにより、 印刷物の真偽判別を行ってもよい。 Alternatively, the authenticity of the printed matter may be determined by detecting and comparing the amount of transmission of infrared light in addition to the reflectivity and magnetic intensity of infrared light.
または、 本発明の印刷物の真偽判別を行う方法は、 赤外部の反射率、 磁気強度、 可視光部の光学情報に加えて、 赤外部の透過量を検出して照合することにより、 印刷物の真偽判別を行ってもよい。 図面の簡単な説明 Alternatively, the method for determining the authenticity of a printed matter according to the present invention includes the steps of detecting and comparing the amount of transmission of the infrared light in addition to the reflectance, magnetic intensity, and optical information of the visible light portion of the infrared light to perform collation. The authenticity determination may be performed. BRIEF DESCRIPTION OF THE FIGURES
添付図面において、 In the attached drawings,
図 1は、 実施例 1で用いるインキの配合を示す。 FIG. 1 shows the composition of the ink used in Example 1.
図 2は、 実施例 2で用いるインキの配合を示す。 FIG. 2 shows the composition of the ink used in Example 2.
図 3は、 実施例 3で用いるインキの配合を示す。 FIG. 3 shows the composition of the ink used in Example 3.
図 4は、 実施例 4で用いるインキの配合を示す。 FIG. 4 shows the composition of the ink used in Example 4.
図 5は、 各実施例における真偽判別印刷物を示す。 FIG. 5 shows the authenticity discrimination printed matter in each embodiment.
図 6は、 実施例 1のべタインキ皮膜の分光反射率を示す。 FIG. 6 shows the spectral reflectance of the solid ink film of Example 1.
図 7は、 実施例 1の凹版ィンキによる凹版画線から構成される画像の分光反射 率を示す。 FIG. 7 shows the spectral reflectance of an image composed of an intaglio image by the intaglio ink of Example 1.
図 8は、 実施例 1の赤外部吸収夕ィプ凹版画像の出力電圧相対値を示す。 FIG. 8 shows the output voltage relative values of the infrared absorption type intaglio intaglio image of the first embodiment.
図 9は、 実施例 1の赤外部反射夕ィプ凹版画像の出力電圧相対値を示す。 FIG. 9 shows the output voltage relative values of the infrared reflection intaglio intaglio image of the first embodiment.
図 1 0は、 実施例 2のべタインキ皮膜の分光反射率を示す。
図 1 1は、 実施例 2の凹版インキによる凹版画線から構成される画像の分光反 射率を示す。 FIG. 10 shows the spectral reflectance of the solid ink film of Example 2. FIG. 11 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 2.
図 1 2は、 実施例 2の赤外部吸収タイプ凹版画像の出力電圧相対値を示す。 図 1 3は、 実施例 2の赤外部反射タイプ凹版画像の出力電圧相対値を示す。 図 1 4は、 実施例 3のべ夕インキ皮膜の分光反射率を示す。 FIG. 12 shows the output voltage relative value of the infrared absorption type intaglio image of Example 2. FIG. 13 shows the output voltage relative value of the infrared reflection type intaglio image of the second embodiment. FIG. 14 shows the spectral reflectance of the ink film of Example 3.
図 1 5は、 実施例 3の凹版インキによる凹版画線から構成される画像の分光反 射率を示す。 FIG. 15 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 3.
図 1 6は、 実施例 3の赤外部吸収夕イブ凹版画像の出力電圧相対値を示す。 図 1 7は、 実施例 3の赤外部反射タイプ凹版画像の出力電圧相対値を示す。 図 1 8は、 実施例 4のべ夕インキ皮膜の分光反射率を示す。 FIG. 16 shows the output voltage relative value of the infrared-emission intaglio intaglio image of the third embodiment. FIG. 17 shows the output voltage relative value of the infrared reflection type intaglio image of the third embodiment. FIG. 18 shows the spectral reflectance of the black ink film of Example 4.
図 1 9は、 実施例 4の凹版インキによる凹版画線から構成される画像の分光反 射率を示す。 FIG. 19 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 4.
図 2 0は、 実施例 4の赤外部吸収タイプ凹版画像の出力電圧相対値を示す。 図 2 1は、 実施例 4の赤外部反射タイプ凹版画像の出力電圧相対値を示す。 図 2 2は、 実施例 1〜4における反射率と磁性強度を示す。 FIG. 20 shows the output voltage relative values of the infrared absorption type intaglio image of Example 4. FIG. 21 shows the output voltage relative value of the infrared reflection type intaglio image of the fourth embodiment. FIG. 22 shows the reflectance and the magnetic intensity in Examples 1 to 4.
図 2 3は、 実施例 5で用いるインキの配合を示す。 FIG. 23 shows the composition of the ink used in Example 5.
図 2 4は、 実施例 5のべ夕インキ皮膜の分光反射率を示す。 FIG. 24 shows the spectral reflectance of the base ink film of Example 5.
図 2 5は、 実施例 5の凹版インキによる凹版画線から構成される画像の分光反 射率を示す。 FIG. 25 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 5.
図 2 6は、 実施例 5の赤外部反射夕ィプ凹版画像の出力電圧相対値を示す。 図 2 7は、 実施例 6の赤外部反射夕ィプ凹版画像の出力電圧相対値を示す。 図 2 8は、 実施例 6で用いるインキの配合を示す。 FIG. 26 shows the output voltage relative value of the infrared reflection intaglio intaglio image of the fifth embodiment. FIG. 27 shows an output voltage relative value of an infrared reflection intaglio intaglio image of the sixth embodiment. FIG. 28 shows the composition of the ink used in Example 6.
図 2 9は、 実施例 6のべタインキ皮膜の分光反射率を示す。 FIG. 29 shows the spectral reflectance of the solid ink film of Example 6.
図 3 0は、 実施例 6の凹版インキによる凹版画線から構成される画像の分光反 射率を示す。 FIG. 30 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 6.
図 3 1は、 実施例 6の赤外部反射夕ィプ凹版画像の出力電圧相対値を示す。 図 3 2は、 実施例 6の赤外部反射夕ィプ凹版画像の出力電圧相対値を示す。 図 3 3は、 実施例 7で用いるインキの配合を示す。 FIG. 31 shows the output voltage relative value of the infrared reflection intaglio intaglio image of the sixth embodiment. FIG. 32 shows the output voltage relative values of the infrared reflection intaglio intaglio image of the sixth embodiment. FIG. 33 shows the composition of the ink used in Example 7.
図 3 4は、 裏面に施す I R吸収性ィンキの配合を示す。
図 3 5 A、 3 5 Bは、 各実施例における真偽判別印刷物の正面図である。 図 3 6は、 実施例 7の凹版インキによる凹版画線から構成される画像の分光反 射率を示す。 Figure 34 shows the formulation of the IR absorbing ink applied to the back side. FIGS. 35A and 35B are front views of the authenticity printed matter in each embodiment. FIG. 36 shows the spectral reflectance of an image composed of an intaglio image with the intaglio ink of Example 7.
図 3 7は、 実施例 7の赤外部吸収夕ィプ凹版画像の出力電圧相対値を示す。 図 3 8は、 実施例 7の赤外部反射夕ィプ凹版画像の出力電圧相対値を示す。 図 3 9は、 実施例 9で用いるインキの配合を示す。 FIG. 37 shows the output voltage relative value of the infrared absorption type intaglio intaglio image of the seventh embodiment. FIG. 38 shows the output voltage relative value of the infrared reflection intaglio intaglio image of the seventh embodiment. FIG. 39 shows the formulation of the ink used in Example 9.
図 4 0は、 実施例 1の赤外部吸収夕ィプ及び反射夕ィプのィンキ画線における 赤外部の透過量を示す。 FIG. 40 shows the transmission amount of the infrared region in the infrared image of the infrared absorption type and the reflection type in Example 1.
図 4 1は、 実施例 2の赤外部吸収タイプ及び反射タイプのインキ画線における 赤外部の透過量を示す。 FIG. 41 shows the amount of transmission in the infrared region of the ink image of the infrared absorption type and the reflection type in Example 2.
図 4 2は、 実施例 3の赤外部吸収タイプ及び反射タイプのインキ画線における 赤外部の透過量を示す。 FIG. 42 shows the transmission amount of the infrared region in the ink image of the infrared absorption type and the reflection type in Example 3.
図 4 3は、 実施例 1の赤外部吸収タイプ及び反射タイプのィンキ画線における 赤外部の透過量を示す。 FIG. 43 shows the transmission amount of the infrared region in the infrared absorption type and the reflection type of the ink image of Example 1.
図 4 4は、 実施例 2の赤外部吸収夕ィプ及び反射夕ィプのィンキ画線における 赤外部の透過量を示す。 FIG. 44 shows the transmission amount in the infrared region in the ink image of the infrared absorption type and the reflection type in Example 2.
図 4 5は、 実施例 6の赤外部吸収タイプ及び反射タイプのインキ画線における 赤外部の透過量を示す。 FIG. 45 shows the transmission amount of infrared light in the ink image of the infrared absorption type and the reflection type in Example 6.
図 4 6は、 実施例 7の赤外部吸収タイプ及び反射タイプのインキ画線における 赤外部の透過量を示す。 FIG. 46 shows the amount of transmission in the infrared region of the ink image of the infrared absorption type and the reflection type in Example 7.
図 4 7は、 実施例 8の赤外部吸収タイプ及び反射タイプのィンキ画線における 赤外部の透過量を示す。 FIG. 47 shows the transmission amount of the infrared region in the infrared absorption type and reflection type ink lines of Example 8.
図 4 8は、 実施例 9の赤外部吸収タイプ及び反射タイプのインキ画線における 赤外部の透過量を示す。 FIG. 48 shows the transmission amount of the infrared region in the infrared absorption type and reflection type ink image of Example 9.
1 実施例の真偽判別凹版印刷物 1 Example of authenticity intaglio printed matter
2 磁性凹版画像 2 Magnetic intaglio image
3 磁性凹版画像 3 Magnetic intaglio image
赤外部吸収タイプの凹版磁性ィンキのべタインキ皮膜の分光反射率
赤外部反射タイプの凹版磁性ィンキのべタインキ皮膜の分光反射率 赤外部吸収夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of solid ink film of intaglio magnetic ink of infrared absorption type Spectral reflectance of intaglio magnetic ink solid ink film of infrared reflection type. Spectral reflectance of intaglio magnetic image of infrared absorption type.
赤外部反射夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared external reflection type
赤外部吸収夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside absorption type
赤外部反射夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside reflection type
赤外部吸収タイプの凹版磁性ィンキのべタインキ皮膜の分光反射率 赤外部反射タイプの凹版磁性ィンキのべタインキ皮膜の分光反射率 赤外部吸収夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of solid ink film of intaglio magnetic ink of infra-red absorption type Spectral reflectance of intaglio magnetic image of intaglio magnetic ink of infra-red absorption type
赤外部反射夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared external reflection type
赤外部吸収夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside absorption type
赤外部反射夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside reflection type
赤外部吸収タイプの凹版磁性ィンキのべタインキ皮膜の分光反射率 赤外部反射タイプの凹版磁性ィンキのべタインキ皮膜の分光反射率 赤外部吸収夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of solid ink film of intaglio magnetic ink of infra-red absorption type Spectral reflectance of intaglio magnetic image of intaglio magnetic ink of infra-red absorption type
赤外部反射夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared external reflection type
赤外部吸収夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside absorption type
赤外部反射夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside reflection type
赤外部吸収タイプの凹版磁性ィンキのべタインキ皮膜の分光反射率 赤外部反射タイプの凹版磁性ィンキのぺ夕ィンキ皮膜の分光反射率 赤外部吸収夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of solid ink film of intaglio magnetic ink of infrared absorption type. Spectral reflectance of black ink film of intaglio magnetic ink of infrared reflection type. Spectral reflectance of intaglio magnetic image of infrared absorption type
赤外部反射夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared external reflection type
赤外部吸収夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside absorption type
赤外部反射夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside reflection type
赤外部反射夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared external reflection type
赤外部反射夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared external reflection type
赤外部反射夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared external reflection type
赤外部反射夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared external reflection type
赤外部反射夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside reflection type
赤外部反射夕ィプの凹版磁性画像の磁気強度相対値
赤外部反射タイプの凹版磁性ィンキのぺ夕ィンキ皮膜の分光反射率 赤外部反射タイプの凹版磁性ィンキのべ夕インキ皮膜の分光反射率 赤外部反射夕ィプの凹版磁性画像の分光反射率 Magnetic intensity relative value of intaglio magnetic image of infrared outside reflection type Spectral reflectivity of intaglio magnetic ink film of infrared reflection type intaglio magnetic ink Spectral reflectance of intaglio magnetic ink film of infrared reflection type of intaglio magnetic ink
赤外部反射夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared external reflection type
赤外部反射夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside reflection type
赤外部反射夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside reflection type
磁性凹版画像 Magnetic intaglio image
磁性凹版画像 Magnetic intaglio image
ベ夕印刷 Printing
印刷のない領域 No print area
赤外部吸収夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared outside absorption type
赤外部反射夕ィプの凹版磁性画像の分光反射率 Spectral reflectance of intaglio magnetic image of infrared external reflection type
赤外部吸収タイプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared absorption type
赤外部反射夕ィプの凹版磁性画像の磁気強度相対値 Magnetic intensity relative value of intaglio magnetic image of infrared outside reflection type
赤外部吸収夕ィプの赤外部透過量 Infrared transmission of infrared outside absorption type
赤外部反射夕ィプの赤外部透過量 Infrared transmission of infrared external reflection type
赤外部吸収夕ィプの赤外部透過量 Infrared transmission of infrared outside absorption type
赤外部反射夕ィプの赤外部透過量 Infrared transmission of infrared external reflection type
赤外部吸収夕ィプの赤外部透過量 Infrared transmission of infrared outside absorption type
赤外部反射夕ィプの赤外部透過量 Infrared transmission of infrared external reflection type
赤外部吸収夕ィプの赤外部透過量 Infrared transmission of infrared outside absorption type
赤外部反射夕ィプの赤外部透過量 Infrared transmission of infrared external reflection type
赤外部反射夕ィプの赤外部透過量 Infrared transmission of infrared external reflection type
赤外部反射夕ィプの赤外部透過量 Infrared transmission of infrared external reflection type
赤外部反射夕ィプの赤外部透過量 Infrared transmission of infrared external reflection type
赤外部反射夕ィプの赤外部透過量 Infrared transmission of infrared external reflection type
赤外部吸収夕ィプの赤外部透過量 Infrared transmission of infrared outside absorption type
赤外部反射夕ィプの赤外部透過量 Infrared transmission of infrared external reflection type
赤外部反射夕ィプの赤外部透過量
6 3 赤外部反射夕ィプの赤外部透過量 Infrared transmission of infrared external reflection type 6 3 Infrared transmission of red external reflection type
6 4 赤外部吸収夕ィプの赤外部透過量 6 4 Infrared transmission through infrared absorption
6 5 赤外部反射夕ィプの赤外部透過量 発明の詳細な説明 6 5 Infrared transmission of infrared external reflection type Detailed description of the invention
一般的な磁性材料は、 可視域において吸収特性を示すと共に、 赤外域でも吸収 特性を示す。 このため、 赤外域で反射特性を示す磁性印刷物を作成することがで きなかった。 General magnetic materials exhibit absorption characteristics in the visible region and also exhibit absorption characteristics in the infrared region. For this reason, it has not been possible to produce a magnetic printed matter exhibiting reflection characteristics in the infrared region.
従って、 赤外域で反射特性を示す磁性画像領域と、 赤外域で吸収特性を示す磁 性画像領域とを組み合わせた印刷物は、 一般的な磁性材料では実現不可能な印刷 物であるため、 このような印刷物を実現すると模倣偽造が極めて困難な真偽判別 印刷物となる。 Therefore, a printed material combining a magnetic image region exhibiting reflection characteristics in the infrared region and a magnetic image region exhibiting absorption characteristics in the infrared region is a printed material that cannot be realized with general magnetic materials. If a real printed matter is realized, it becomes a true / false discrimination printed matter that is extremely difficult to imitate and forge.
本発明の発明者は、 通常用いられている磁性材料より赤外部の反射率が高い磁 性材料を含有するィンキを用いることによって、 赤外部の反射率を高くすること が可能であることを見い出し、 本発明の真偽判別印刷物及び真偽判別方法を提案 するに至った。 The inventor of the present invention has found that it is possible to increase the reflectance in the infrared region by using an ink containing a magnetic material having a higher infrared reflectance than a commonly used magnetic material. Accordingly, the inventors have proposed the authenticity discrimination printed matter and the authenticity discrimination method of the present invention.
以下に説明する本発明の実施例による真偽判別印刷物は、 後述するように一般 的な赤外域で吸収特性を有する磁性材と、 反射特性を有する磁性材とを用いて、 少なくとも 2種類の印刷画像における赤外部の反射吸収特性と磁気強度の少なく ともいずれか一方が異なるように設定されている。 そして、 本発明の実施例によ る真偽判別方法は、 このような 2種類の印刷画像におけるそれぞれの磁気強度、 赤外部の光学情報、 あるいはさらに可視光域の光学情報を測定し、 予め設定され た真の情報と比較照合することで、 その印刷物の真偽判別を行うものである。 ここで、 赤外部の反射率が高い印刷画線を形成するために用いられるィンキに 配合する磁性材料には、 赤外部の反射率が低い、 一般的な黒、 黒灰色及び茶褐色 系の磁性材料と異なり、 相対的に赤外部の反射率が高い磁性材料を使用する。 一方、 赤外部の反射率の低い印刷画線を形成するために用いられるィンキに配 合する磁性材料には、 赤外部の反射率が低い、 一般的な黒、 黒灰色及び茶褐色系 の磁性材料を用いる。
赤外部の反射率を低くする手法として、 赤外部の反射率が低い一般的な磁性材 料を用いる他に、 相対的に赤外部の反射率が高い磁性材料と共に、 赤外部の反射 率の低い顔料を用いてもよい。 The authenticity discrimination printed material according to the embodiment of the present invention described below uses at least two types of printing using a general magnetic material having an absorption characteristic in an infrared region and a magnetic material having a reflection characteristic as described later. At least one of the reflection / absorption characteristics of the infrared region and the magnetic intensity in the image is set to be different. The authenticity discrimination method according to the embodiment of the present invention measures the magnetic intensity, the optical information in the infrared, or the optical information in the visible light range of each of the two types of printed images, and sets the information in advance. By comparing and comparing the printed information with the true information, the authenticity of the printed matter is determined. Here, the magnetic material to be mixed with the ink used to form a printed image having a high infrared reflectance is a general black, black-gray or brownish magnetic material having a low infrared reflectance. Unlike this, a magnetic material with a relatively high infrared reflectance is used. On the other hand, magnetic materials to be combined with the ink used to form a printed image with low reflectance in the infrared region include general black, black-gray and brownish magnetic materials having a low infrared reflectance. Is used. As a method of lowering the reflectivity of the infrared, in addition to using a general magnetic material with a low reflectivity of the infrared, a magnetic material with a relatively high reflectivity in the infrared region and a low reflectivity of the infrared Pigments may be used.
相対的に赤外部の反射率の高い磁性材料は、 粒子径 0 . l m〜2 0 m の範 囲内にある磁性材料を核として、 Si02、 Ag、 TiOzで被覆加工することによって、 CIE-L*a*b*の が 7 0以上、 a*が— 2〜 2、 b*が 0〜 1 5にしたものが好まし い。 しかし、 特にこれに制限されるものではない。 Relatively-infrared magnetic material having high reflectance of the magnetic material in the particle diameter 0. Lm~2 0 m of within range as nuclei, Si0 2, Ag, by cladded with TiOz, CIE-L Preferably, * a * b * is 70 or more, a * is 2 to 2, and b * is 0 to 15. However, there is no particular limitation.
また、 磁性材料の核となる磁性材料は、 一般に磁気信号の機械的読み取り処理 方法に利用されるような磁気印刷パターンを形成する磁性印刷ィンキに用いるこ とのできる磁性材料であれば良く、 一般的な、 ゥェタイト （FeO) 、 マグネタイ ト （Fe 3〇4) 、 鉄鉱 （Fe20 3) 、 へマタイト （ひ- Fe20 3 ) 、 マグへマタイト （ァ -Fe20 3 ) のような酸化鉄材料、 Co含有酸化鉄、 Cr02、 鉄等のメタル粉、 Baフエ ライ ト等の磁性材料が考えられる。 しかし、 磁性材料の被覆核となる磁性材料は、 これに制限されるものではなく、 磁性を有し、 印刷インキ用顔料として利用可能 であればどのような材料及び形状をしたものでも構わない。 In addition, the magnetic material serving as the core of the magnetic material may be any magnetic material that can be used for a magnetic printing ink for forming a magnetic printing pattern as generally used for a method of mechanically reading a magnetic signal. specific, Wetaito (FeO), Magunetai bets (Fe 3 〇 4), iron (Fe 2 0 3), into hematite (shed - Fe 2 0 3), such as hematite into mug (§ -Fe 2 0 3) Iron oxide materials, Co-containing iron oxides, metal powders such as CrO 2 and iron, and magnetic materials such as Ba ferrite are conceivable. However, the magnetic material serving as the coating core of the magnetic material is not limited to this, and any material and shape may be used as long as it has magnetism and can be used as a pigment for printing ink.
また、 核となる磁性材料の周囲に被覆する材料は si o2、 Ag、 Ti が好ましい が、 これに制限されるものではなく、 その材料としては、 有機顔料或いは二酸化 ジルコニウム、 二酸化セリウム、 酸化亜鉛、 酸化夕ルタン、 酸化インジウム、 酸 化錫、 酸化錫-酸化インジウムの混合物、 酸化アルミニウム、 酸化マグネシウム、 金属単体材料としては、 アルミニウム、 チタン、 ニッケル、 鉄等の金属或いは、 その他その合金等の無機材料が挙げられる。 The material to be coated around the core magnetic material is preferably, but is not limited to, si 2 , Ag , and Ti. Examples of the material include organic pigments, zirconium dioxide, cerium dioxide, and oxides. Zinc, nitrous oxide, indium oxide, tin oxide, a mixture of tin oxide and indium oxide, aluminum oxide, magnesium oxide, and metals such as aluminum, titanium, nickel, iron, and other alloys. Inorganic materials.
また、 核磁性材料を被覆材料によって被覆加工する方法は、 金属アルコキシド の加水分解によるゾル—ゲル法によって行うのが最も好ましいが、 被覆加工する 手段はこれに制限されるものでなく、 蒸着、 スパッタリング、 コ一ティング法、 メツキ法等の表面処理を施す手段であれば何れでも構わない。 Also, the method of coating the nuclear magnetic material with the coating material is most preferably performed by a sol-gel method by hydrolysis of metal alkoxide, but the method of coating is not limited to this, and the method of coating and vapor deposition, sputtering Any means may be used as long as it performs a surface treatment such as a coating method and a plating method.
更に、 本'発明で被覆加工した材料のそれぞれの幾何学的厚みは、 Si02が 1 0Furthermore, each of the geometrical thickness of the cladding material in the present 'invention, Si0 2 is 1 0
〜； I 0 0 nm、 Agが 1 0 ~ 1 0 0 nm、 TiQが 0 . 1 nm以上としたものが好ま しいが、 各種材料の厚みはこれに制限されるものではなく、 それそれの被覆層の 数は少なくとも 1層以上であれば良い。 最終的に得られた磁性材料が、 赤外部で
3 0 %以上の高い反射率を示すものであれば、 どのような構成を有するものであ つてもよい。 ~; I 100 nm, Ag 100 to 100 nm, TiQ 0.1 nm or more is preferred, but the thickness of various materials is not limited to this, and each coating The number of layers may be at least one or more. The finally obtained magnetic material is Any structure may be used as long as it has a high reflectance of 30% or more.
また、 印刷画像に対し、 機械的磁気検出器に対して十分な SN比を有する磁気 強度を付与するには、 ィンキ中に配合する磁気材料の配合割合をィンキ全量に対 して 5 %以上とすることが望ましい。 In addition, in order to impart magnetic strength with a sufficient SN ratio to the mechanical image detector to the printed image, the proportion of the magnetic material to be mixed in the ink should be 5% or more based on the total amount of the ink. It is desirable to do.
また、 2種類の印刷画像における赤外部の反射率の差は、 機械処理に適した良 好な SN比を得るためにも 1 0 %以上あることが好ましく、 さらに赤外部の反射 率が相対的に高い印刷画像においては、 赤外部の反射率が 3 0 %以上であること が望ましい。 2種類の印刷画像の赤外部の反射率の差が 1 0 %未満であると、 検 出装置の感度に依存する程度が大きくなり、 検出精度の低い検出器ではその差を 検出することが難しい場合がある。 In addition, the difference between the reflectances of the infrared region between the two types of printed images is preferably at least 10% in order to obtain a good SN ratio suitable for mechanical processing, and the reflectance of the infrared region is relatively high. It is desirable that the reflectivity of the infrared region be 30% or more for a printed image having a very high intensity. If the difference between the reflectances of the infrared portions of the two types of printed images is less than 10%, the degree of dependence on the sensitivity of the detection device increases, and it is difficult for a detector with low detection accuracy to detect the difference There are cases.
更に、 2種類の印刷画像は、 肉眼でその色彩を容易に識別することが可能であ つてもよく、 或いは識別が困難であってもよい。 すなわち、 2種類の印刷画像に おいて、 機械読み取りが可能な程度に磁気強度が略同一あるいは相対的な差があ り、 また赤外部の反射率の測定値が略同一あるいは相対的な差があるのであれば よい。 Further, the two types of printed images may be capable of easily distinguishing their colors with the naked eye, or may be difficult to distinguish. In other words, the magnetic intensities of the two types of printed images are substantially the same or a relative difference to the extent that machine reading is possible, and the measured values of the reflectance in the infrared region are substantially the same or a relative difference. Anything is fine.
2種類の印刷画像を形成する際に使用するィンキの色彩は、 何れの色であって も良い。 インキに使用される顔料の種類は、 例えば、 青色粉体として、 群青、 紺 青 （プルシアンブルー） 、 コバルトブル一等の無機粉体及びフタロシアニンプル —系、 スレン系、 ァゾ系、 アントラキノン系の C.I.ビグメントプル一に属する有 機顔料、 または、 赤色顔料として、 カドミウムレッド、 ぺんがら、 モリプデンレ ヅド等の無機顔料及びァゾ系、 キナクリドン系、 ペリレン系、 レーキレヅド等の C.I.ビグメントレッドに属する有機顔料、 黄色クロムイエロ一、 カドミウムイエ ロー、 チタンイェロー等の無機顔料及びキノフタロン系、 ァゾイソインドリン系 等の C.I.ビグメントイエロ一に属する有機顔料、 紫色顔料としては、 コバルト紫、 マンガン紫等の無機粉体及びォキサジン系、 ァゾ系、 アントラキノン系等の C.I. ビグメントバイオレットに属する有機顔料、 録色顏料としては、 クロムグリーン、 コノ レトグリ一ン等の無機顔料及びフタロシアニン系等の C.I.ビグメントグリ一 ンに属する有機顔料、 白色顔料としては、 酸化チタン顔料、 体質顔料としては、
硫酸バリウム、 アルミナ白、 酸化珪素、 燐酸カルシウム及び炭酸カルシウム系顔 料を用いることができる。 また、 これらの粉体を数色組み合わせて任意の色調を 有する色料を調整することもできる。 その他、 一般の印刷で使用するオフセット ィンキ、 グラビアインキ等の公知の有色ィンキも有色材料として用いることがで きる。 しかし、 相対的に赤外部の反射率が高い画像の形成に用いるインキに使用 する顔料は、 赤外部の反射率を考慮して用いる必要があり、 赤外部の反射率の低 い顔料を用いることは望ましくない。 The color of the ink used when forming two types of print images may be any color. The types of pigments used in the ink are, for example, blue powder, inorganic powders such as ultramarine, navy blue (Prussian blue), cobalt bull, etc., and phthalocyanine-based, sullen-based, azo-based and anthraquinone-based powders. Organic pigments belonging to CI Pigment Pull Co., or as red pigments, inorganic pigments such as cadmium red, red pepper, molybdenum red, and organic pigments belonging to CI pigment red such as azo, quinacridone, perylene, lake lake, etc. Inorganic pigments such as yellow chrome yellow, cadmium yellow and titanium yellow, and organic pigments belonging to CI pigment yellow such as quinophthalone and azoisoindoline, and inorganic powders such as cobalt purple and manganese purple as purple pigments And CI pigments such as oxazines, azos, and anthraquinones Organic pigments belonging to violet, coloring pigments include inorganic pigments such as chrome green and conoretogrine and organic pigments belonging to CI pigment green such as phthalocyanine, white pigments include titanium oxide pigments, and extender pigments , Barium sulfate, alumina white, silicon oxide, calcium phosphate and calcium carbonate pigments can be used. A colorant having an arbitrary color tone can be adjusted by combining several colors of these powders. In addition, known colored inks such as offset ink and gravure ink used in general printing can be used as the colored material. However, pigments used in the formation of images with relatively high reflectance in the infrared region must be used in consideration of the reflectance in the infrared, and pigments with low reflectance in the infrared must be used. Is not desirable.
更に、 本発明で使用するインキ用バインダーとなるワニスは、 前記顔料等を分 散し、 印刷画線を形成するものであって、 その種類については特に制限はなく、 公知の塗料用及びィンキ用樹脂を用いることができる。 このようなインキワニス 用として用いる樹脂としては、 アクリル樹脂、 ポリエステル樹脂、 アルキド樹脂、 ロジン変性フヱノール樹脂、 シリコン樹脂、 フッ素樹脂を基本樹脂に、 必要に応 じてアミノ樹脂またはィソシァネ一ト化合物等の架橋剤を混合してなる熱可塑性 樹脂を挙げることができる。 更に、 エポキシ環、 ォキセ夕ニル基、 ァクリロイル 基及びメタクリロイル基を有する紫外線、 即ち、 UV硬化性及び電子線、 即ち、 EB硬化性樹脂が存在する。 その他にも、 常温で乾燥又は硬化する 2液型ポリウ レ夕ン樹脂、 2液型シリコン樹脂など塗料用樹脂等も使用できる。 これらのヮニ スは、 1種類単独で使用しても良いし、 2種類以上組み合わせて用いても良い。 また、 2種類の印刷画像を形成する際に磁気画線を作成する方法は、 皮膜を形 成する手段で有ればいずれを用いてもよい。 例えば、 グラビア印刷、 オフセット 印刷、 スクリーン印刷、 凹版印刷、 フレキソ印刷、 その他公知の印刷方式をはじ め、 板金塗装等に用いられるスプレー方式、 プレス方式等皮膜を形成する方法等、 いずれの方法も用いることができる。 Further, the varnish serving as an ink binder used in the present invention is a varnish that disperses the pigment and the like to form a print image, and the type thereof is not particularly limited. Resin can be used. The resins used for such ink varnishes include acrylic resins, polyester resins, alkyd resins, rosin-modified phenol resins, silicone resins, and fluororesins as basic resins, and cross-linking of amino resins or isocyanate compounds as necessary. And a thermoplastic resin obtained by mixing an agent. In addition, there are ultraviolet, ie UV-curable and electron-beam, ie EB-curable resins having an epoxy ring, an oxenyl group, an acryloyl group and a methacryloyl group. In addition, resins for paint such as two-component polyurethane resin and two-component silicone resin that dry or cure at room temperature can also be used. One type of these ingredients may be used alone, or two or more types may be used in combination. Further, as a method of creating a magnetic image when forming two types of print images, any method may be used as long as it is a means for forming a film. For example, any method such as gravure printing, offset printing, screen printing, intaglio printing, flexographic printing, a known printing method, a spray method used for sheet metal painting, a method of forming a film such as a press method, etc. may be used. be able to.
以下に、 各実施例による印刷物について図面を参照して説明する。 ここで、 印 刷方式については限定するものでない。 Hereinafter, a printed matter according to each embodiment will be described with reference to the drawings. Here, the printing method is not limited.
(実施例 1 ) (Example 1)
実施例 1において、 2種類の印刷画像に用いるそれぞれのインキ （赤外域吸収 タイプ、 赤外域反射タイプ） の配合を図 1に示す。 この 2種類のインキは、 赤外
部の反射吸収特性は異なるが、 磁性強度はほぼ同程度であり、 視覚的に容易には 色彩を互いに識別できない暗緑色系凹版ィンキである。 FIG. 1 shows the composition of each ink (infrared absorption type and infrared reflection type) used in two types of printed images in Example 1. These two types of inks are infrared Although the reflection and absorption characteristics of the parts are different, the magnetic strength is almost the same, and it is a dark green intaglio that cannot distinguish colors easily from each other visually.
(実施例 2 ) (Example 2)
実施例 2において、 2種類の印刷画像に用いるそれそれのインキ （赤外域吸収 タイプ、 赤外域反射タイプ） の配合を図 2に示す。 この 2種類のインキは、 赤外 部の反射吸収特性は異なるが、 磁性強度はほぼ同程度で、 視覚的に容易に色彩を 互いに識別できる茶褐色系赤外吸収凹版ィンキ及び暗緑色系赤外反射タイプ凹版 ィンキである。 FIG. 2 shows the composition of each ink (infrared absorption type and infrared reflection type) used in two types of printed images in Example 2. Although these two types of inks have different infrared absorption and absorption characteristics, they have almost the same magnetic strength, and they can easily distinguish colors from each other visually. It is a type intaglio ink.
(実施例 3 ) (Example 3)
実施例 3において、 2種類の印刷画像に用いるそれそれのインキ （赤外域吸収 タイプ、 赤外域反射タイプ） の配合を図 3に示す。 この 2種類のインキは、 赤外 部の反射吸収特性において相違し、 また磁性強度において相違する。 相対的に赤 外部の反射率が高いィンキの方がより磁性強度が高く、 視覚的に容易には色彩を 互いに識別できない暗緑色系凹版ィンキである。 FIG. 3 shows the composition of each ink (infrared absorption type and infrared reflection type) used in two types of printed images in Example 3. The two types of ink differ in the reflection and absorption characteristics of the infrared region, and also in the magnetic strength. An ink with a relatively high red reflectance has a higher magnetic strength and is a dark green intaglio that cannot easily distinguish colors visually.
(実施例 4 ) (Example 4)
実施例 4において、 2種類の印刷画像に用いるそれそれのインキ （赤外域吸収 タイプ、 赤外域反射タイプ） の配合を図 4に示す。 この 2種類のインキは、 赤外 部の反射吸収特性及び磁性強度において共に異なり、 相対的に赤外部の反射率が 高い方がより磁性強度が高く、 視覚的に容易に色彩を互いに識別できる茶褐色系 赤外吸収凹版ィンキ及び暗緑色系赤外反射タイプ凹版ィンキである。 次に、 上記実施例 1〜4に対して、 分光反射率、 磁性強度をそれそれ測定した 結果について説明する。 FIG. 4 shows the composition of each ink (infrared absorption type and infrared reflection type) used in two types of printed images in Example 4. These two types of inks differ in both the reflection and absorption characteristics of the infrared region and the magnetic intensity. The higher the reflectance in the infrared region, the higher the magnetic intensity, and the brown color that makes it easy to visually distinguish colors from each other. The system is an infrared absorption intaglio ink and a dark green infrared reflection type intaglio ink. Next, the results of measuring the spectral reflectance and the magnetic intensity of Examples 1 to 4 will be described.
(ぺ夕の反射率） (ぺ Evening reflectance)
各実施例において、 皮膜厚さ約 40 zmのべ夕インキ皮膜を分光光度計で測定 した。
(印刷画線の反射率） In each example, a black ink film having a film thickness of about 40 zm was measured with a spectrophotometer. (Reflectance of printed image)
凹版インキを用いて、 図 5に示された真偽判別凹版印刷物 1を作製した。 この 真偽判別凹版印刷物 1は、 磁性画像 2及び 3を有する。 それそれの画像 2及び 3 に対して、 分光反射率を測定した。 Using the intaglio ink, authenticity intaglio printed matter 1 shown in FIG. 5 was produced. The authenticity intaglio printed matter 1 has magnetic images 2 and 3. The spectral reflectance was measured for each of images 2 and 3.
画像 2及び 3には、 それそれ異なる磁性凹版インキを使用し、 共に画線幅 1 0 Ο πκ 画線ピッチ 3 0 0 111、 画線深度 1 0 O zrnの凹版版面により凹版画線 が印刷されている。 Images 2 and 3 were printed with intaglio printing using different magnetic intaglio inks, using an intaglio printing surface with an image width of 10 Ο πκ, an image pitch of 3 0 0 111, and an image depth of 10 O zrn. ing.
(磁性強度） (Magnetic strength)
画像 2及び 3におけるそれぞれの凹版画線の磁性強度を磁気検出へッドで検出 し、 電気信号に変換して相対値を得た。 The magnetic intensity of each intaglio image in images 2 and 3 was detected by a magnetic detection head and converted to an electric signal to obtain a relative value.
各実施例における測定デ一夕を図 6〜図 2 1に示し、 図 2 2に各実施例と測定 結果をまとめて示す。 FIGS. 6 to 21 show the measurement data in each example, and FIG. 22 summarizes each example and the measurement results.
これらの結果から、 各実施例とも分光反射率については、 2 5 %程度以上差が あり、 機械処理によって十分差を検出できることがわかった。 一方、 実施例 1及 び 2は磁性強度がほぼ同程度であり、 実施例 3及び 4は大きく異なっていること が示されている。 From these results, it was found that there was a difference of about 25% or more in the spectral reflectance in each of the examples, and that a sufficient difference could be detected by mechanical processing. On the other hand, the magnetic intensities of Examples 1 and 2 are almost the same, indicating that Examples 3 and 4 are significantly different.
従来の赤外部の反射率が非常に低い磁性材料では、 実施例 1〜 4の赤外反射夕 イブの赤外部の高い反射率と高い磁性強度を得ることは不可能であった。 しかし、 本発明では、 赤外部の反射率が高い特殊な白色磁性材料を使用することによって、 高い磁気強度を有する赤外反射タイプのィンキを可能とし、 そのことによって、 実施例 1〜4の印刷物が可能となった。 With a conventional magnetic material having a very low reflectance in the infrared region, it was impossible to obtain a high reflectance and a high magnetic intensity in the infrared region of the infrared reflection evening of Examples 1 to 4. However, in the present invention, the use of a special white magnetic material having a high reflectance in the infrared region enables an infrared-reflection type ink having a high magnetic intensity, thereby allowing the printed materials of Examples 1 to 4 to be printed. Became possible.
仮に、 本実施例の真偽判別凹版印刷物について、 第三者が赤外部の反射吸収特 性の異なる 2種類の機械読み取り可能な磁気強度を有する凹版画像をある程度推 測して、 市販の磁気材料によって磁気を付与したとしても、 その 2種類の凹版画 像の赤外部における反射吸収特性を模倣することは不可能である。 また、 市販の 顔料によって、 2種類の凹版画像に施してある赤外部の反射率の差を施したとし ても、 その 2種類の凹版画像に同時に磁気強度を付与することは不可能である。 上記本発明の実施例による真偽判別印刷物及び真偽判別方法によれば、 コンピ ユー夕、 スキャナ等により外見的には模倣可能であるが、 一般的な磁性材料では
不可能な赤外域の反射吸収特性と磁気特性とを組み合わせることで、 容易に真偽 判別が可能となる。 さらに、 本発明の実施例 5 ~ 8による真偽判別印刷物と、 各実施例の真偽判別 印刷物を用いた判別方法について説明する。 For the authenticity intaglio printed matter of this example, a third party estimates to some extent intaglio images having two types of machine-readable magnetic intensities with different reflection and absorption characteristics of infrared portions, and a commercially available magnetic material is used. It is impossible to imitate the reflection and absorption characteristics of the two types of intaglio images in the infrared region, even if the magnetism is applied. Further, even if the difference between the reflectances of the infrared portions applied to the two types of intaglio images is provided by a commercially available pigment, it is impossible to simultaneously impart magnetic intensity to the two types of intaglio images. According to the authenticity discrimination printed matter and the authenticity discrimination method according to the embodiment of the present invention described above, the appearance can be imitated by a computer, a scanner, or the like. By combining the reflection and absorption characteristics in the impossible infrared region and the magnetic characteristics, it is possible to easily determine the authenticity. Further, the authenticity discrimination printed matter according to the fifth to eighth embodiments of the present invention and the discrimination method using the authenticity discrimination printed matter of each embodiment will be described.
(実施例 5 ) (Example 5)
実施例 5で用いたインキ配合を図 2 3に示す。 この実施例 5によって形成された 凹版画像の特長は次の通りである。 赤外部の反射吸収特性がほぼ同程度であり、 互 いの磁性強度が明らかに異なり、 視覚的に容易には色彩を互いに識別できない喑綠 系色の赤外反射夕ィプの凹版ィンキで印刷されている。 The ink formulation used in Example 5 is shown in FIG. The features of the intaglio image formed by Example 5 are as follows. The reflection and absorption characteristics of the infrared region are almost the same, the magnetic intensities are clearly different from each other, and the colors cannot be easily distinguished from each other visually. Have been.
このような凹版インキを用いて、 図 5に示す画線 2、 3をそれそれ作製した。 本実施例で用いたインキにおける、 ベ夕インキ （皮膜厚さ約 40〃m) の分光反 射率を図 2 4の曲線 2 8及び 2 9に示す。 Using such an intaglio ink, objects 2 and 3 shown in FIG. 5 were produced. The spectral reflectances of the base ink (film thickness about 40 m) of the ink used in this example are shown in curves 28 and 29 in FIG.
本実施例で作製した凹版磁性画像の分光反射率を、 図 2 5の曲線 3 0及び 3 1に 示す。 The spectral reflectances of the intaglio magnetic image produced in this example are shown in curves 30 and 31 in FIG.
本実施例で作製した、 相対的に磁性強度が小さい赤外反射タイプの凹版磁性画像 の磁気強度の相対値を図 2 6の 3 2に示し、 相対的に磁性強度が大きい赤外反射夕 ィプの凹版磁性画像の磁気強度相対値を図 2 7の 3 3に示す。 The relative values of the magnetic intensities of the intaglio magnetic images of the infrared reflection type having a relatively small magnetic intensity produced in this example are shown in FIG. The relative values of the magnetic intensity of the intaglio magnetic image of the sample are shown in 33 in Figure 27.
この測定結果から、 凹版磁性画像の分光反射率については、 殆ど同じであり、 機 械処理によって十分可視域、 赤外域が同じと認識される。 From these measurement results, it is recognized that the spectral reflectance of the intaglio magnetic image is almost the same, and that the visible and infrared regions are sufficiently the same by mechanical processing.
一方、 磁気強度については明らかに異なっており、 機械処理によって十分相対的 な差を ί食知できることがわかる。 On the other hand, the magnetic intensities are clearly different, and it can be seen that the relative differences can be sufficiently detected by mechanical treatment.
従来の赤外部の反射率が非常に低い磁性材料では、 赤外反射タイプの赤外部の高 い反射率と高い磁性強度を得ることは不可能であった。 そのため、 本実施例に示す ような赤外域の反射率が高く、 かつ磁性強度に明確な差を有するような 2種類以上 の凹版画像を形成することは不可能であった。 With a conventional magnetic material having a very low reflectance in the infrared region, it was impossible to obtain high reflectance and high magnetic strength in the infrared region of the infrared reflection type. Therefore, it was impossible to form two or more types of intaglio images having a high reflectance in the infrared region and a distinct difference in magnetic strength as shown in this example.
これに対し、 本実施例によれば、 赤外部の反射率が高い特殊な白色系の磁性材料 を使用することによって、 高い磁気強度を有する赤外反射タイプのインキを可能と し、 これにより従来不可能であった赤外域の反射率が高く、 かつ磁性強度に明確な
差を有するような 2種類以上の凹版画像を形成することが可能である。 仮に、 本実施例の真偽判別凹版印刷物について、 第三者が赤外部の反射率が高く 且つ磁性強度が高い凹版画像をある程度推測して、 市販の磁気材料等によって磁気 を付与したとしても、 その 2種類の凹版画像の赤外部における反射特性を模倣する ことは不可能である。 On the other hand, according to the present embodiment, the use of a special white magnetic material having a high reflectance in the infrared region enables the use of an infrared reflection type ink having a high magnetic intensity. High reflectance in the infrared region, which was impossible, and a clear magnetic strength It is possible to form two or more intaglio images having a difference. Even if a third party estimates the intaglio image having high reflectance in the infrared region and high magnetic strength to some extent, and imparts magnetism with a commercially available magnetic material or the like, It is impossible to imitate the reflection characteristics of the two types of intaglio images in the infrared region.
ま 、 市販の顔料を用いて、 2種類の凹版画像に施してある赤外部の反射率を施 したとしても、 その 2種類の凹版画像に同時に本実施例と同様の磁気強度を施すこ とは極めて困難である。 よって、 上記実施例によれば、 模倣偽造が極めて困難な真 偽判別印刷物を得ることができる。 Even if a commercially available pigment is used to apply the infrared reflectance to the two types of intaglio images, it is impossible to apply the same magnetic intensity to the two types of intaglio images at the same time as in this example. Extremely difficult. Therefore, according to the above-described embodiment, it is possible to obtain a true / false discrimination printed matter in which imitation forgery is extremely difficult.
(実施例 6 ) . (Example 6).
実施例 6で用いたィンキ配合を図 2 8に示す。 実施例 6は、 上記実施例 5と反射 特性及び磁気強度は同様であり、 異色系である点で相違する。 FIG. 28 shows the ink composition used in Example 6. The sixth embodiment is similar to the fifth embodiment in the reflection characteristic and the magnetic intensity, and differs from the fifth embodiment in that the sixth embodiment is a different color system.
本実施例によつて形成された凹版画像の特長は、 次の通りである。 The features of the intaglio image formed according to this embodiment are as follows.
赤外部の反射吸収特性がほぼ同一であり、 互いの磁性強度が明らかに異なり、 視 覚的に容易に色彩を互いに識別できる茶褐色系の赤外反射タイプの凹版ィンキ及び 暗緑色系の赤外反射夕イブの凹版インキで印刷されている。 Infrared reflection and absorption characteristics of the infrared region are almost the same, and their magnetic intensities are clearly different from each other. It is printed with Eve's intaglio ink.
このような凹版ィンキを用いて、 実施例 5と同様に図 5に示す画像 2及び 3を作 製した。 Using this intaglio ink, images 2 and 3 shown in FIG. 5 were produced in the same manner as in Example 5.
本実施例で用いたインキにおける、 ベ夕インキ （皮膜厚さ約 40〃m) の分光反 射率を図 2 9の曲線 3 4及び 3 5に示す。 The curves 34 and 35 in FIG. 29 show the spectral reflectance of the base ink (film thickness about 40 μm) of the ink used in this example.
本実施例で作製した凹版磁性画像の分光反射率を図 3 0の曲線 3 6及び 3 7に示 す。 The spectral reflectances of the intaglio magnetic image produced in this example are shown in curves 36 and 37 in FIG.
本実施例で作製した相対的に磁性強度が小さい赤外反射夕ィプの凹版磁性画像の 磁気強度相対値を図 3 1の 3 8に示し、 相対的に磁性強度が大きい赤外反射タイプ の凹版磁性画像の磁気強度相対値を図 3 2の 3 9に示す。 The relative magnetic intensity values of the intaglio magnetic image of the infrared reflection type with relatively small magnetic intensity produced in this example are shown in Fig. 31-38. The relative values of the magnetic intensity of the intaglio magnetic image are shown in FIG.
本実施例の測定結果より、 凹版磁性画像の赤外部の分光反射率については殆ど同 じであり、 機械処理によって十分赤外域が高く同じと認識される。 From the measurement results of this example, the spectral reflectance of the infrared portion of the intaglio magnetic image is almost the same, and it is recognized that the infrared region is sufficiently high and the same by mechanical processing.
—方、 磁気強度については相対的に大きく異なっており、 機械処理によって十分
差を検知できることがわかる。 —On the other hand, the magnetic strength is relatively different, It can be seen that the difference can be detected.
従来の赤外部の反射率が非常に低い磁性材料では、 上述したように、 赤外反射夕 イブの赤外部の高い反射率と高い磁性強度を得ることは不可能であった。 そのため、 本実施例に示すような赤外域の反射率が高く、 磁性強度に明確な差を有するような 2種類以上の凹版画像を形成することは不可能であった。 As described above, it is impossible to obtain a high reflectivity and a high magnetic strength of the infrared portion of the infrared reflective evening with a conventional magnetic material having a very low reflectance in the infrared portion. Therefore, it was impossible to form two or more types of intaglio images having a high reflectance in the infrared region and a distinct difference in magnetic strength as shown in this example.
本実施例によれば、 赤外部の反射率が高い特殊な白色系の磁性材料を使用するこ とによって、 高い磁気強度を有する赤外反射タイプのインキが可能であるので、 赤 外域の反射率が高く、 磁性強度に明確な差を有するような 2種類以上の凹版画像を 形成することが可能である。 According to this embodiment, the use of a special white magnetic material having a high reflectivity in the infrared region enables the use of an infrared reflective ink having a high magnetic intensity. It is possible to form two or more types of intaglio images with high magnetic strength and a distinct difference in magnetic strength.
本実施例の真偽判別凹版印刷物に対し、 第三者が赤外部の反射率が高く且つ磁性 強度が高い凹版画像をある程度推測し、 市販の磁気材料等を用いて磁気を付与した としても、 この 2種類の凹版画像の赤外部における反射特性を模倣することは不可 能である。 Even if a third party estimates the intaglio image having a high infrared reflectance and high magnetic strength to some extent on the intaglio printed matter of the authenticity discrimination in this example, and imparts magnetism using a commercially available magnetic material or the like, It is impossible to imitate the reflection characteristics of these two intaglio images in the infrared region.
また、 市販の顔料により、 2種類の凹版画像に施してある赤外部の反射率を施し たとしても、 この 2種類の凹版画像に同時に本実施例と同様の磁気強度を施すこと は困難である。 Further, even if the two types of intaglio images are provided with the reflectance of the infrared portion using a commercially available pigment, it is difficult to simultaneously apply the same magnetic intensity to the two types of intaglio images as in the present embodiment. .
従って、 本実施例によれば、 一般的な磁性材料では不可能な赤外域の反射特性と 磁気特性とを組み合わせた偽造防止効果の高い印刷物を得ることができる。 Therefore, according to the present embodiment, it is possible to obtain a printed matter having a high anti-counterfeiting effect combining the reflection characteristics and the magnetic characteristics in the infrared region, which is impossible with a general magnetic material.
(実施例 7 ) (Example 7)
本実施例において、 表面における印刷画像を形成するために用いたィンキ配合を 図 3 3に示す。 FIG. 33 shows the ink composition used to form a printed image on the surface in this example.
本実施例によつて形成された凹版印刷物の特長は次の通りである。 赤外部の反射 吸収特性と磁性強度とが共に相対的に異なり、 相対的に赤外部の反射率が高い凹版 画像の方が低い磁性強度を示し、 さらに視覚的に容易には色彩を互いに識別できな い 2種類の暗緑色系の凹版ィンキで印刷されている。 The features of the intaglio printed matter formed according to this embodiment are as follows. Infrared reflection and absorption characteristics are relatively different from each other, and magnetic intensities are relatively different. Intaglio images with relatively high reflectance in the infrared region have lower magnetic intensities, and colors can be easily distinguished visually. None Printed in two dark green intaglio inks.
更に、 磁気強度が相対的に低く赤外部の反射率の高い凹版印刷画像の裏面には、 図 3 4に示す黒色系のィンキによってベ夕印刷が施されている。 Further, the back side of the intaglio printing image having a relatively low magnetic intensity and a high reflectance in the infrared region is printed with black ink shown in FIG. 34.
このような凹版インキを用いて、 図 3 5 A、 図 3 5 Bに示す凹版印刷物を作製し
た。表面において、 画線 4 0及び 4 1が形成され、 さらに表面の印刷画線 4 1の裏 面にベタ印刷 4 2が形成され、 表面の印刷画線 4 1の裏面の領域 4 3には印刷が形 成されていない。 Using such intaglio ink, intaglio printed matter shown in Fig. 35A and Fig. 35B was prepared. Was. Objects 40 and 41 are formed on the front surface, and solid printing 42 is formed on the back side of printed object 41 on the front surface, and printed on area 43 on the back surface of printed object 41 on the front surface Is not formed.
本実施例で作製した凹版磁性画像の分光反射率を、 図 3 6の曲線 4 4及び 4 5に 示す。 The spectral reflectances of the intaglio magnetic image produced in this example are shown by curves 44 and 45 in FIG.
本実施例で作製した、 相対的に磁性強度が大きく赤外部の反射率が相対的に低い 凹版磁性画像の磁気強度相対値を図 3 7の 4 6に、 相対的に磁性強度が小さく赤外 部の反射率が相対的に高い凹版磁性画像の磁気強度相対値を図 3 8の 4 7に示す。 本実施例の測定結果には、 2種類の凹版磁性画像の赤外部の分光反射率は 2 5 % 以上の差があり、 また磁気強度は大きく異なっていることが示されており、 機械処 理によって十分相対的な差を検出することが可能である。 The relative magnetic strength of the intaglio magnetic image produced in this example, which has a relatively high magnetic strength and a relatively low infrared reflectance, is shown in FIG. The magnetic intensity relative values of the intaglio magnetic image where the reflectance of the portion is relatively high are shown in FIG. The measurement results of this example show that there is a difference of 25% or more in the spectral reflectance of the infrared region between the two types of intaglio magnetic images, and that the magnetic intensities are significantly different. Thus, it is possible to detect a sufficiently relative difference.
本実施例による印刷物ほ、 磁性が相対的に低く且つ赤外部の反射率が相対的に高 い凹版磁性画像の裏面に、 図 3 4に示された赤外部の光を吸収する黒色系ィンキを ベ夕印刷することによって、 2種類の凹版磁性画像における赤外部の反射吸収特性、 磁性強度、 更には赤外部の透過特性を所望の特性が得られるように組み合わせたも のである。 On the back side of the intaglio magnetic image having relatively low magnetism and relatively high reflectance in the infrared region, a black ink absorbing the light in the infrared region shown in FIG. By printing the image, the reflection and absorption characteristics of the infrared region, the magnetic strength, and the transmission characteristics of the infrared region in the two types of intaglio magnetic images are combined to obtain the desired characteristics.
このような本実施例に従って作成された真偽判別凹版印刷物に対し、 第三者があ る程度推測して、 市販の材料等によって模倣しょうとしても、 表裏の印刷画像の赤 外部の反射吸収特性、 磁性強度、 赤外部の透過特性の組合せを簡単且つ完全に模倣 することは極めて困難である。 よって、 本実施例によれば、 偽造防止効果の高い印 刷物を得ることが可能である。 Even if a third party guesses to a certain extent that the authenticity intaglio printed matter created in accordance with this embodiment is to try to imitate it with a commercially available material, the reflection and absorption characteristics of the red and black printed images on the front and back sides It is extremely difficult to simply and completely mimic the combination of magnetic field, magnetic strength, and transmission characteristics of the infrared. Therefore, according to this embodiment, it is possible to obtain a printed matter having a high forgery prevention effect.
(実施例 8 ) (Example 8)
実施例 8に用いた表面の印刷画像を形成するために用いたィンキ配合を図 2 3に 示す。 FIG. 23 shows the ink composition used to form the printed image on the surface used in Example 8.
本実施例によつて形成された凹版印刷物の特長は次の通りである。 The features of the intaglio printed matter formed according to this embodiment are as follows.
赤外部の反射率がほぼ同じであり、 互いの磁性強度が明らかに異なり、 視覚的に 容易には色彩を互いに識別できない暗緑系色の赤外反射タイプの凹版ィンキで印刷 されている。
更に、 磁気強度が相対的に低い印刷画像の裏面に、 図 3 4に示す黒色系のインキ によってベ夕印刷が施されている。 The reflectivity of the infrared region is almost the same, the magnetic intensities are clearly different from each other, and the ink is printed with a dark green infrared reflection type intaglio ink whose color cannot be easily distinguished from each other visually. In addition, black printing shown in Fig. 34 is applied to the back side of the printed image with relatively low magnetic intensity.
上記凹版インキを用いて、 上記実施例 7と同様に、 図 3 5 A、 図 3 5 Bに示す凹 版画線を作製した。 Using the above intaglio ink, intaglio objects shown in FIGS. 35A and 35B were produced in the same manner as in Example 7 above.
本実施例で作製した 2種類の凹版磁性画像の分光反射率を、 図 2 5の曲線 3 0及 び 3 1に示す。 Curves 30 and 31 of FIG. 25 show the spectral reflectances of the two types of intaglio magnetic images produced in this example.
さらに本実施例で作製した相対的に磁性強度が小さい赤外部の反射率が高い凹版 磁性画像の磁気強度相対値を図 2 6の 3 2に、 相対的に磁性強度が大きく赤外部の 反射率が高い凹版磁性画像の磁気強度相対値を図 2 7の 3 3に示す。 Further, the relative values of the magnetic intensity of the intaglio magnetic image of the infrared region having a relatively small magnetic intensity and a high reflectance in the infrared region produced in this example are shown in FIG. The magnetic intensity relative values of the intaglio magnetic images with high values are shown in 33 in Figure 27.
本実施例の印刷物において、 2種類の凹版磁性画像の赤外部の分光反射率は共に 5 0 %以上を示し、 磁気強度は相対的に大きく異なっていることから、 機械処理に よって十分その差を検出することができる。 In the printed matter of this example, the spectral reflectance in the infrared region of the two types of intaglio magnetic images both showed 50% or more, and the magnetic intensities were relatively largely different. Can be detected.
更に、 本実施例による印刷物は、 磁性が相対的に低く赤外部の反射率が高い凹版 画像の裏面に、 図 3 4に示された赤外部の吸収性を示す黒色系インキを印刷するこ とにより、 凹版画像の赤外部の反射吸収特性、 磁性強度及び赤外部の透過特性を、 所望の特性が得られるように組み合わせたものである。 Further, in the printed matter according to the present embodiment, a black ink having an infrared absorption property shown in FIG. 34 is printed on the back surface of the intaglio image having relatively low magnetism and a high infrared reflectance. Thus, the reflection and absorption characteristics of the infrared portion, the magnetic strength, and the transmission characteristics of the infrared portion of the intaglio image are combined so as to obtain desired characteristics.
本実施例の真偽判別凹版印刷物について、 第三者がある程度推測して、 市販の材 料等によって模倣しょうとしても、 従来の赤外部の反射率が非常に低い磁性材料で は、 赤外部の反射率が高く且つ高い磁性強度を持つ凹版磁性画像を得ることは従来 の技術では不可能である。 Even if a third party guesses the authenticity discrimination intaglio printed matter of the present embodiment to some extent and tries to imitate it with commercially available materials, the conventional magnetic material having a very low reflectance in the infrared region cannot be used. It is impossible with conventional techniques to obtain an intaglio magnetic image having high reflectivity and high magnetic strength.
更に、 表面に施してある 2種類の凹版画像の赤外部の反射特性及び磁気特性を推 測して、 市販の材料によって 2種類の凹版画像に施してある赤外部の反射特性及び 磁気特性を施したとしても、 本実施例では磁性が相対的に低く赤外部の反射率が高 い凹版画の裏面に黒色系インキを印刷することによって、 その印刷画像領域の赤外 部の透過特性を変化させているため、 表裏の画像の赤外反射、 磁気、 赤外透過特性 の組合せを簡単且つ完全に模倣することが困難である。 従って、 本実施例によれば、 偽造防止効果の高い印刷物を得ることができる。 Furthermore, the reflection characteristics and magnetic characteristics of the infrared region of the two types of intaglio images applied to the surface are estimated, and the reflection characteristics and magnetic characteristics of the infrared region applied to the two types of intaglio images are estimated using commercially available materials. Even so, in the present embodiment, the black ink is printed on the back surface of the intaglio print having relatively low magnetism and high reflectance in the infrared region, thereby changing the transmission characteristics of the infrared region in the print image area. Therefore, it is difficult to easily and completely imitate the combination of the infrared reflection, magnetic, and infrared transmission characteristics of the front and back images. Therefore, according to the present embodiment, it is possible to obtain a printed matter having a high forgery prevention effect.
上記実施例は様々に変形が可能である。 例えば、 上記実施例 7では、 赤外部の反 射吸収特性と磁性強度とが共に相対的に異なり、 相対的に赤外部の反射率が高い凹
版画像の方が低い磁性強度を示し、 さらに視覚的に容易には色彩を互いに識別でき ない 2種類の喑緑色系の凹版ィンキで印刷されている。 The above embodiment can be variously modified. For example, in Example 7 above, both the infrared absorption characteristics and the magnetic intensity are relatively different, and the concave portion having a relatively high reflectance in the infrared region is used. The plate image shows lower magnetic strength, and is printed with two types of intaglio inks of greenish color, whose colors cannot be easily distinguished visually.
更に、 磁気強度が相対的に低く赤外部の反射率の高い凹版印刷画像の裏面には、 黒色系のインキによってべ夕印刷が施されている。 In addition, black printing is applied to the back side of the intaglio printing image having a relatively low magnetic intensity and a high infrared reflectance.
これに対し、 実施例 9として示した印刷物では、 図 3 9に示すようなインクが用 いられており、 赤外部の反射吸収特性と磁性強度とが共に相対的に異なり、 相対的 に赤外部の反射率が高い凹版画像の方が低い磁性強度を示し、 さらに視覚的に容易 に色彩を互いに識別することができる 2種類の茶褐色系及び暗緑色系の凹版ィンキ で印刷されている。 On the other hand, in the printed matter shown in Example 9, the ink as shown in FIG. 39 was used, and both the reflection and absorption characteristics of the infrared and the magnetic strength were relatively different, and the infrared region was relatively different. An intaglio image with a high reflectance indicates a lower magnetic intensity, and is printed with two types of intaglio inks of brown and dark green, which can easily distinguish colors from each other visually.
更に、 磁気強度が相対的に低く赤外部の反射率の高い凹版印刷画像の裏面には、 黒色系のィンキによってベ夕印刷が施されている。 次に、 上記実施例による印刷物を用いて真偽判別を行う方法について説明する。 この真偽判別方法は、 真偽判別印刷物に形成された 2種類の画像におけるそれぞ れの赤外部の反射率の差、 赤外部の透過率の差及び磁気強度の差を検出し照合す ることによって、 印刷物の真偽判別を行うものである。 Furthermore, black printing is applied to the back side of the intaglio printing image having a relatively low magnetic intensity and a high reflectance in the infrared region. Next, a method of performing the authenticity determination using the printed matter according to the embodiment will be described. This authenticity discrimination method detects and compares the difference in the reflectance of the infrared region, the difference in the transmittance of the infrared region, and the difference in the magnetic intensity of the two types of images formed on the authenticity printed matter. Thus, the authenticity of the printed matter is determined.
(実施例 1の印刷物に対する真偽判別） (Determination of authenticity of printed matter of Example 1)
上記実施例 1による印刷物における 2種類の凹版画像の赤外部の反射率を図 7の 曲線 6及び 7に、 磁性特性の測定値を図 8の 8、 図 9の 9に示す。 更に、 2種類の 凹版画像の赤外部の透過特性を評価した結果を図 4 0の 4 8及び 4 9に示す。 ここで、 凹版画像領域の赤外部の透過特性は、 以下のような I R透過光学特性測 定法を用いて評価した。 Curves 6 and 7 in FIG. 7 show the reflectances of the two types of intaglio images in the printed matter according to Example 1 above, and measured values of the magnetic properties are shown in FIGS. 8 and 9 in FIGS. Further, the results of evaluating the transmission characteristics of the infrared region of the two intaglio images are shown in FIGS. Here, the transmission characteristics of the infrared region in the intaglio image area were evaluated using the following IR transmission optical characteristic measurement method.
透過赤外 L E D (940nm) を発光させ、 測定対象物を透過した I Rの光量をィ メ一ジセンサによって採取し、 画像表示させてその赤外部の透過特性を評価する。 イメージセンサによって.採取された赤外部の透過画像信号を増幅させ、 アナログ/ ディジ夕ル変換を行ってディジ夕ルデ一夕に変換し、 コンピュータのモニタ画像に 表示する。 データの表示は、 例えば 0〜2 5 5階調とする。 赤外 L E Dの I R光が 完全に透過する場合、 2 5 5 / 2 5 5階調で白色の画像として表示され、 完全に遮
蔽される場合は 0 / 2 5 5階調で黒色の画像として表示される。 The transmitted infrared LED (940nm) emits light, the amount of IR transmitted through the object to be measured is sampled by the image sensor, and the image is displayed to evaluate the transmission characteristics of the infrared part. The transmitted image signal in the infrared region collected by the image sensor is amplified, converted to digital data by analog / digital conversion, and displayed on a computer monitor image. The data is displayed, for example, at 0 to 255 gray levels. When the IR light of the infrared LED is completely transmitted, it is displayed as a white image with 255/255 gradation and completely blocked. When it is covered, it is displayed as a black image with 0/255 gradation.
赤外部の透過性の評価に用いる測定値は、 それそれの凹版画線が施されている 5 mm X 5 mm領域内の平均値とした。 The measured value used for the evaluation of the transmittance of the infrared was an average value within a 5 mm × 5 mm area where the intaglio streak is applied.
測定値を A/D変換して得られたディジタルデ一夕が、 1 5 0 / 2 5 5以上のモ ノクロ階調を示す場合、 その画線領域は赤外部透過性を示すと定義し、 それ以下の 場合は赤外部吸収性 （非透過性） を示すと定義した。 If the digital data obtained by A / D conversion of the measured value shows a monochrome gradation of 150/255 or more, the image area is defined as showing infrared transmittance, If it is less than that, it is defined as exhibiting infrared absorption (non-transmission).
上述した各実施例に従って作成した凹版印刷物に含まれる 2種類の凹版画像のう ち、 相対的に赤外部の反射率が低い凹版画線領域の赤外部の透過画像は 1 1 6 / 2 5 5のモノクロ階調として表示される。 一方、 相対的に赤外部の反射率が高い凹版 画線領域の赤外部の透過画像は、 1 2 5 / 2 5 5のモノクロ階調として表示される c 従って、 この場合の 2種類の凹版画像は、 両者とも赤外部非透過性画像として識別 されることになる。 Of the two types of intaglio images included in the intaglio printed matter created according to each of the above-described embodiments, the transmission image of the infrared portion of the intaglio image region having a relatively low reflectance of the infrared portion is 1 16/255 Are displayed as monochrome gradations. On the other hand, an intaglio with a relatively high reflectance in the infrared region The transmitted image in the infrared region of the image area is displayed as a monochrome gradation of 125/255 c. Are both identified as infrared non-transparent images.
このように、 予め真正の印刷物に含まれる 2種類の印刷画像の可視光部光学情 報、 赤外部の反射率の差、 透過率の差及び磁気強度を記憶しておき、 判別の対象 物である印刷物に含まれる 2種類の印刷画像の可視光部光学情報、 赤外部の反射 率の差、 透過率の差及び磁気強度を検出し、 記憶した真正の印刷物のデ一夕と比 較照合することによって、 印刷物の真偽判別を行うことで、 第三者が模倣した偽 造印刷物と真正の印刷物とを高い精度で選別することができる。 As described above, the optical information of the visible light portion, the difference in the reflectance of the infrared region, the difference in the transmittance, and the magnetic intensity of the two types of printed images included in the genuine printed matter are stored in advance, and the object to be determined is determined. Detects visible light optical information, difference in infrared reflectance, transmittance difference, and magnetic intensity of two types of printed images contained in a certain printed matter, and compares them with stored stored data of authentic printed matter. In this way, the authenticity of the printed matter can be determined, so that a fake printed matter imitated by a third party and a genuine printed matter can be sorted with high accuracy.
(実施例 2の印刷物に対する真偽判別） (Determination of authenticity of printed matter of Example 2)
上記実施例 2に含まれる 2種類の凹版画像の赤外部の反射率を図 1 1の曲線 1 2 及び 1 3に示し、 磁性特性の測定値を図 1 2の 1 4及び図 1 3の 1 5に示す。 さら に、 2種類の凹版画像の赤外部の透過特性を評価した結果を図 4 1の 5 0及び 5 1 に示す。 Curves 12 and 13 in FIG. 11 show the reflectances of the infrared portions of the two types of intaglio images included in Example 2 above, and the measured values of the magnetic properties are shown in FIGS. See Figure 5. Furthermore, the results of evaluating the transmission characteristics of the infrared region of the two types of intaglio images are shown in 50 and 51 in FIG.
実施例で得られた凹版印刷物の 2種類の凹版画像の中で、 相対的に赤外部の反射 率が低い凹版画線領域の赤外部の透過画像は 1 1 6 / 2 5 5のモノクロ階調として 表示される。 また、 相対的に赤外部の反射率が高い凹版画線領域の 透過画像は、 1 2 5 / 2 5 5のモノクロ階調として表示される。 従って、 実施例で得られた凹版 印刷物の 2種類の凹版画像は両者とも赤外部非透過性画像として識別される。
したがって、 予め真正の印刷物の可視光部光学情報、 赤外部の反射率の差、 透過 率の差及び磁気強度を記憶させておき、 上記 2種類の印刷画像の可視光部光学情報、 赤外部の反射率の差、 透過率の差及び磁気強度を検出し照合することによって、 第 三者が模倣した偽造印刷物と真正の印刷物とを高精度で選別することができる。 Among the two types of intaglio images of the intaglio printed matter obtained in the example, the transmission image of the infrared portion in the intaglio image region having a relatively low reflectance of the infrared portion is a monochrome gradation of 1 16/255 Is displayed as In addition, a transmitted image in an intaglio image region having a relatively high reflectance in the infrared region is displayed as 125/255 monochrome gradation. Therefore, the two intaglio images of the intaglio printed matter obtained in the examples are both identified as infrared non-transparent images. Therefore, the optical information of the visible light portion of the genuine printed matter, the difference in the reflectance in the infrared, the difference in the transmittance, and the magnetic intensity are stored in advance, and the optical information in the visible light portion of the two types of printed images, the infrared By detecting and comparing the difference in reflectance, the difference in transmittance, and the magnetic intensity, it is possible to sort out a fake print imitated by a third party and a genuine print with high accuracy.
(実施例 3の印刷物に対する真偽判別） (Determination of authenticity of printed matter of Example 3)
上記実施例 3の 2種類の凹版画像の赤外部の反射率を図 1 5の曲線 1 8及び 1 9、 磁性特性の測定値を図 1 6の 2 0及び図 1 7の 2 1に示す。 更に、 2種類の凹版画 像の赤外部の透過特性を評価した結果を図 4 2の 5 2及び 5 3に示す。 Curves 18 and 19 in FIG. 15 show the reflectances of the two types of intaglio images of Example 3 in the infrared region, and measured values of the magnetic properties are shown in 20 in FIG. 16 and 21 in FIG. Furthermore, the results of evaluating the transmission characteristics of the two types of intaglio images in the infrared region are shown in FIGS.
上記実施例 3に従って作成した凹版印刷物に含まれる 2種類の凹版画像のうち、 相対的に赤外部の反射率が低く磁性強度が小さい凹版画線領域の赤外部の透過画像 は、 1 1 6 / 2 5 5のモノクロ階調として表示される。 また、 相対的に赤外部の反 射率が高く磁性強度が大きい凹版画線領域の I R透過画像は、 1 2 5 / 2 5 5のモ ノクロ階調として表示される。従って、 実施例 3により得られた凹版印刷物におけ る 2種類の凹版画像は、 両者とも赤外部非透過性画像として識別される。 Of the two types of intaglio images included in the intaglio printed matter created in accordance with Example 3 above, the transmission image of the infrared portion of the intaglio image region where the reflectance of the infrared portion is relatively low and the magnetic intensity is small is 1 16 / Displayed as monochrome gradation of 255. In addition, an IR transmission image in an intaglio image region having a relatively high reflectance and a high magnetic intensity in the infrared region is displayed as 125/255 monochromatic gradation. Therefore, the two types of intaglio images in the intaglio printed matter obtained in Example 3 are both identified as infrared non-transparent images.
この場合も、 予め真正の印刷物の可視光部光学情報、 赤外部の反射率の差、 透過 率の差及び磁気強度を記憶させておき、 判別対象物における 2種類の印刷画像の可 視光部光学情報、 赤外部の反射率の差、 透過率の差及び磁気強度を検出し照合する ことで、 印刷物の真偽判別を高い精度で行うことができる。 Also in this case, the visible light portion optical information of the genuine printed matter, the difference in the reflectance of the infrared region, the difference in the transmittance, and the magnetic intensity are stored in advance, and the visible light portion of the two types of printed images on the discrimination target is stored. By detecting and comparing the optical information, the difference in reflectance in the infrared, the difference in transmittance, and the magnetic intensity, the authenticity of printed matter can be determined with high accuracy.
(実施例 4の印刷物に対する真偽判別） (Determination of authenticity of printed matter of Example 4)
上記実施例 4に従って作成した印刷物における 2種類の凹版画像の赤外部の反射 率を図 1 9の曲線 2 4及び 2 5に示し、 それそれの磁性特性の測定値を図 2 0の 2 6及び図 2 1の 2 7に示す。 また、 2種類の凹版画像の赤外部の透過特性を評価し た結果を図 4 3の 5 4及び 5 5に示す。 Curves 24 and 25 in FIG. 19 show the reflectances of the two types of intaglio images in the printed matter prepared in accordance with Example 4 above, and the measured values of the magnetic properties thereof are shown in FIGS. This is shown at 27 in Figure 21. In addition, the results of evaluating the transmission characteristics in the infrared region of the two types of intaglio images are shown in FIGS.
上記実施例 4で得られた凹版印刷物の 2種類の凹版画像の中で、 相対的に赤外部 の反射率が低く磁性強度が小さい凹版画線領域の赤外部の透過画像は、 1 1 6 /2 Of the two types of intaglio images of the intaglio print obtained in Example 4 above, the transmission image of the infrared portion in the intaglio image region where the reflectance in the infrared portion is relatively low and the magnetic strength is small is 1 16 / Two
5 5のモノクロ階調として表示される。 また、 相対的に赤外部の反射率が高く磁性 強度が大きい凹版画線領域の赤外部の透過画像は、 1 2 5 / 2 5 5のモノクロ階調
として表示される。 よって、 上記実施例 4に従って得られた凹版印刷物における 2 種類の凹版画像は、 両者とも赤外部非透過性画像として識別される。 Displayed as 5 5 monochrome tones. In addition, the transmission image of the infrared part of the intaglio image area, which has a relatively high reflectance and high magnetic strength in the infrared part, has a monochrome gradation of 125/255. Will be displayed as Therefore, the two types of intaglio images in the intaglio printed matter obtained according to Example 4 are both identified as infrared non-transparent images.
予め、 真正の印刷物の可視光部光学情報、 赤外部の反射率の差、 透過率の差及び 磁気強度を記憶しておき、 判別対象物の 2種類の印刷画像の可視光部光学情報、 赤 外部の反射率の差、 透過率の差及び磁気強度を検出し照合するで、 印刷物の真偽判 別が可能である。 The optical information of the visible light portion of the genuine printed matter, the difference in the reflectance of the infrared region, the difference in the transmittance, and the magnetic intensity are stored in advance, and the optical information of the visible light portion of the two types of printed images of the object to be discriminated, By detecting and comparing the difference in external reflectance, the difference in transmittance, and the magnetic intensity, it is possible to determine the authenticity of the printed matter.
(実施例 5の印刷物に対する真偽判別） (Determination of authenticity of printed matter of Example 5)
上記実施例 5の 2種類の凹版画像の赤外部の反射率を図 2 4の 3 0及び 3 1に、 磁性特性の測定値をそれそれ図 2 5の 3 2、 図 2 6の 3 3に示し、 さらに赤外部の 透過特性を評価した結果を図 4 4の 5 6及び 5 7に示す。 The reflectances of the infrared portions of the two intaglio images of Example 5 are shown in Figs. 24 and 30, respectively, and the measured values of the magnetic properties are shown in Fig. 25, 32 and Fig. 26, 33, respectively. The results of the evaluation of the transmission characteristics in the infrared region are shown in FIGS.
実施例で得られた凹版印刷物の 2種類の凹版画像のうち、 相対的に磁性強度が小 さい凹版画線領域の赤外部の透過画像は、 1 6 5 / 2 5 5のモノクロ階調として表 示され、 相対的に磁性強度が大きい凹版画線領域の赤外部の透過画像は、 1 2 0 / 2 5 5のモノクロ階調として表示される。 従って、 上記実施例 5で得られた凹版印 刷物の 2種類の凹版画像は明らかにそれそれ異なった赤外部透過性を有する画像と して識別される。 Of the two types of intaglio images of the intaglio printed material obtained in the examples, the transmission image of the infrared portion of the intaglio image region having relatively low magnetic intensity is represented as a monochrome gradation of 1655/255. The transmitted image of the infrared portion of the intaglio image region having a relatively high magnetic strength is displayed as a monochrome gradation of 120/255. Accordingly, the two types of intaglio images of the intaglio print obtained in Example 5 are clearly identified as images having different infrared transmittances.
従って、 予め真正の印刷物の可視光部光学情報、 赤外部の反射率の差、 透過率の 差及び磁気強度を記憶させておき、 上記 2種類の印刷画像の可視光部光学情報、 赤 外部の反射率の差、 透過率の差及び磁気強度を検出し照合することによって、 印刷 物の真偽判別を行うことができる。 Therefore, the visible light optical information of the genuine printed matter, the difference in the reflectance of the infrared light, the difference in the transmittance, and the magnetic intensity are stored in advance, and the optical information of the visible light in the above two types of printed images is stored in the red external light. By detecting and comparing the difference in reflectance, the difference in transmittance, and the magnetic intensity, it is possible to determine the authenticity of the printed matter.
(実施例 6の印刷物に対する真偽判別） (Determination of authenticity of printed matter of Example 6)
上記実施例 6の 2種類の凹版画像の赤外部の反射率を図 3 0の曲線 3 6及び 3 7 に示し、 磁性特性の測定値をそれそれ図 3 1の 3 8に、 図 3 2の 3 9に示す。 さら に、 2種類の凹版画像の赤外部の透過特性を評価した結果を図 4 5の 5 8及び 5 9 に示す。 The reflectances of the infrared portions of the two intaglio images of Example 6 are shown in curves 36 and 37 of FIG. 30, and the measured values of the magnetic properties are shown in FIGS. Shown in 39. Furthermore, the results of evaluating the transmission characteristics of the infrared region of the two types of intaglio images are shown in FIGS.
実施例で得られた凹版印刷物の 2種類の凹版画像の中で、 相対的に磁性強度が小 さい凹版画線領域の赤外部の透過画像は、 1 6 5 / 2 5 5のモノクロ階調として表
示され、 相対的に磁性強度が大きい凹版画線領域の赤外部の透過画像は、 1 2 0 / 2 5 5のモノクロ階調として表示される。 従って、 上記実施例 6で得られた凹版印 刷物の 2種類の凹版画像は明らかにそれそれ異なつた赤外部透過性を有する画像と して識別される。 Among the two types of intaglio images of the intaglio printed matter obtained in the examples, the transmission image of the infrared portion of the intaglio image region having relatively small magnetic intensity is represented by a monochrome gradation of 1655/255. table The transmitted image of the infrared portion of the intaglio image region having a relatively high magnetic strength is displayed as a monochrome gradation of 120/255. Therefore, the two intaglio images of the intaglio print obtained in Example 6 are clearly identified as images having different infrared transmittances.
従って、 予め真正の印刷物の可視光部光学情報、 赤外部の反射率の差、 透過率の 差及び磁気強度を記憶させておき、 上記 2種類の印刷画像の可視光部光学情報、 赤 外部の反射率の差、 透過率の差及び磁気強度を検出し照合することによって、 印刷 物の真偽判別を行うことができる。 Therefore, the visible light optical information of the genuine printed matter, the difference in the reflectance of the infrared light, the difference in the transmittance, and the magnetic intensity are stored in advance, and the optical information of the visible light in the above two types of printed images is stored in the red external light. By detecting and comparing the difference in reflectance, the difference in transmittance, and the magnetic intensity, it is possible to determine the authenticity of the printed matter.
(実施例 Ίの印刷物に対する真偽判別） (Determining the authenticity of the printed matter in Example Ί)
実施例 7に含まれる 2種類の凹版画像における赤外部の反射率を図 3 6の曲線 4 4及び 4 5に示し、 磁性特性の測定値を図 3 7の 4 6及び図 3 8の 4 7に示す。 さ らに、 2種類の凹版画像領域の赤外部の透過特性を評価した結果を図 4 6の 6 0及 び 6 1に示す。 The reflectances of the infrared portions in the two types of intaglio images included in Example 7 are shown in curves 44 and 45 in FIG. 36, and the measured values of the magnetic properties are shown in FIG. 37 at 46 and FIG. Shown in Furthermore, the results of evaluating the transmission characteristics of the infrared region in the two types of intaglio image areas are shown in FIGS.
本実施例で得られた凹版印刷物の 2種類の凹版画像の中で、 相対的に赤外部の反 射率が低く磁性強度が大きい凹版画線領域の赤外部の透過画像は、 1 1 6 / 2 5 5 のモノクロ階調として表示される。 また、 相対的に赤外部の反射率が高く磁性強度 が小さく、 さらに裏面に図 3 4に示すインキによって印刷が施されている凹版画線 領域の赤外部の透過画像は、 7 1 / 2 5 5のモノクロ階調として表示される。 よつ て、 実施例 7で得られた凹版印刷物の 2種類の凹版画像は、 両者とも赤外部非透過 性画像として識別される。 Of the two intaglio images of the intaglio printed matter obtained in this example, the transmission image of the infrared portion of the intaglio image region where the reflectance of the infrared portion is relatively low and the magnetic intensity is relatively high is 1 16 / It is displayed as a monochrome gradation of 255. In addition, the reflectance of the infrared region is relatively high, the magnetic strength is low, and the transmission image of the infrared region in the intaglio image area where the back surface is printed with the ink shown in Fig. 34 is 7 1/25 Displayed as 5 monochrome gradations. Thus, the two intaglio images of the intaglio printed matter obtained in Example 7 are both identified as infrared non-transparent images.
予め真正の印刷物の可視光部光学情報、 赤外部の反射率の差、 透過率の差及び磁 気強度を記憶させておき、 判別対象物の 2種類の印刷画像の可視光部光学情報、 赤 外部の反射率の差、 透過率の差及び磁気強度を検出し照合することによって、 真正 の印刷物を選別することができる。 The optical information of the visible light portion of the genuine printed matter, the difference in the reflectance of the infrared region, the difference in the transmittance, and the magnetic intensity are stored in advance, and the optical information of the visible light portion of the two types of printed images of the object to be discriminated, red By detecting and comparing the difference in external reflectance, the difference in transmittance, and the magnetic intensity, genuine printed matter can be sorted out.
(実施例 8の印刷物に対する真偽判別） (Determination of authenticity of printed matter of Example 8)
上記実施例 8の 2種類の凹版画像の赤外部の反射率の測定値を図 2 5の曲線 3 0 及び 3 1に示し、 磁性特性の測定値を図 2 6の 3 2及び図 2 7の 3 3にそれそれ示
す。 また、 2種類の凹版画像領域の赤外部の透過特性を評価した結果を、 図 4 7の 6 2及び 6 3に示す。 The measured values of the reflectance in the infrared region of the two intaglio images of Example 8 are shown in curves 30 and 31 of FIG. 25, and the measured values of the magnetic properties are shown in FIGS. 3 3 show it You. The results of evaluating the transmission characteristics of the infrared region in the two types of intaglio image areas are shown in FIGS.
上記実施例 8により得られた凹版印刷物の 2種類の凹版画像のうち、 相対的に磁 性強度が小さい凹版画線領域の赤外部の透過画像は 7 5 / 2 5 5のモノクロ階調と して表示され、 相対的に磁性強度が大きい凹版画線領域の赤外部の透過画像は、 1 2 0 / 2 5 5のモノクロ階調として表示される。 よって、 上記実施例 8に従って得 られた凹版印刷物の 2種類の凹版画像は、 両者とも赤外部非透過性画像として識別 される。 Of the two types of intaglio images of the intaglio printed matter obtained in Example 8 above, the transmission image of the infrared portion of the intaglio image region having relatively low magnetic strength has a monochrome gradation of 75/255. The transmitted image of the infrared portion of the intaglio image region having relatively high magnetic strength is displayed as a monochrome gradation of 120/255. Therefore, the two types of intaglio images of the intaglio printed matter obtained according to Example 8 are both identified as infrared non-transparent images.
即ち、 予め真正の印刷物の可視光部の光学情報、 赤外部の反射率の差、 透過率の 差及び磁気強度を記憶させておき、 判別対象物の 2種類の印刷画像の可視光部の光 学情報、 赤外部の反射率の差、 透過率の差及び磁気強度を検出して照合することで、 印刷物の真偽判別を行うことが可能である。 That is, the optical information of the visible light portion of the genuine printed matter, the difference in the reflectance of the infrared region, the difference in the transmittance, and the magnetic intensity are stored in advance, and the light in the visible light portion of the two types of printed images of the discrimination target is stored. It is possible to determine the authenticity of the printed matter by detecting and comparing the scientific information, the difference in reflectance in the infrared, the difference in transmittance, and the magnetic intensity.
(実施例 9の印刷物に対する真偽判別） (Determination of authenticity of printed matter of Example 9)
実施例 9に用いた印刷画像を形成するために用いたィンキ配合を図 3 9に示す。 この凹版インキを用いて、 図 5に示される凹版印刷物 1を作製した。 本実施例 9に 従って形成された凹版印刷物 1における二つの印刷画線 2、 3は、 それそれ赤外部 の反射吸収特性と磁性強度が異なり、 相対的に赤外部の反射率が高い凹版画像の方 が低い磁性強度を示し、 視覚的に容易には色彩を互いに識別でき 3 2種類の茶褐色 系及び暗緑色系の凹版ィンキで印刷されている。 The ink formulation used to form the printed image used in Example 9 is shown in FIG. Using this intaglio ink, an intaglio print 1 shown in FIG. 5 was produced. The two printing images 2 and 3 in the intaglio printed matter 1 formed according to the ninth embodiment have different reflection / absorption characteristics and magnetic strength in the infrared region, respectively, and have an intaglio image with a relatively high reflectance in the infrared region. The lower magnetic strength indicates that the colors are easily distinguishable from each other visually, and are printed with two types of intaglio inks of brownish and dark green.
この場合の凹版磁性画像の分光反射率を、 図 3 6の曲線 4 4及び 4 5に示す。 相対的に磁性強度が大きく赤外部の反射率が相対的に低い凹版磁性画像の磁気強 度相対値を図 3 7の 3 7に示し、 相対的に磁性強度が小さく赤外部の反射率が相対 的に高い凹版磁性画像の磁気強度相対値を図 3 8の 4 7に示す。 さらに、 2種類の 凹版画像の赤外部の透過特性を評価した結果を、 図 4 8の 6 4及び 6 5に示す。 実施例で得られた凹版印刷物の 2種類の凹版画像のうち、 相対的に磁性強度が高 く赤外部の反射率が相対的に低い凹版磁性画像領域の赤外部の透過画像は 1 1 6 2 5 5のモノクロ階調として表示され、 相対的に磁性強度が低く赤外部の反射率が 相対的に高い凹版磁性画像領域の赤外部の透過画像は、 1 6 2 / 2 5 5のモノクロ
階調として表示される。 従って、 本実施例氺に従って得られた凹版印刷物の 2種類 の凹版画像は明らかにそれそれ異なった赤外部透過性を有する画像として識別する ことができる。 The spectral reflectance of the intaglio magnetic image in this case is shown by curves 44 and 45 in FIG. The relative magnetic strength of the intaglio magnetic image with relatively high magnetic strength and relatively low reflectance in the infrared region is shown in Figure 37-37. The relative values of the magnetic intensity of the intaglio magnetic image with the highest values are shown in Figure 38-47. Further, the results of evaluating the transmission characteristics of the infrared region of the two types of intaglio images are shown in FIGS. Of the two types of intaglio images of the intaglio printed matter obtained in the examples, the transmission image of the infrared portion of the intaglio magnetic image region having relatively high magnetic strength and relatively low reflectance of the infrared portion is 1 1 6 2 The transmission image of the infrared part of the intaglio magnetic image area, which is displayed as a monochrome gradation of 55 and has relatively low magnetic intensity and relatively high reflectance in the infrared part, is a monochrome monochrome image of 16 2/255 Displayed as gradation. Therefore, the two types of intaglio images of the intaglio printed matter obtained in accordance with this embodiment can be clearly identified as images having different infrared transmittances.
よって、 予め真正の印刷物の可視光部光学情報、 赤外部の反射率の差、 透過率の 差及び磁気強度を記憶させておき、 判別対象物における 2種類の印刷画像の可視光 部光学情報、 赤外部の反射率の差、 透過率の差及び磁気強度を検出し照合すること により、 第三者が模倣した偽造印刷物と真正の印刷物とを高精度で選別することが 可能である。 Therefore, the visible light portion optical information of the genuine printed matter, the difference in the reflectivity of the infrared region, the difference in the transmittance, and the magnetic intensity are stored in advance, and the visible light portion optical information of the two types of printed images on the discrimination target are stored. By detecting and comparing the difference in reflectivity, the difference in transmittance, and the magnetic intensity of infrared radiation, it is possible to sort out fake prints imitated by a third party and genuine prints with high accuracy.
上述した実施例はいずれも一例であり、 本発明を限定するものではなく、 本発 明の技術的範囲内において様々に変形することが可能である。
The above-described embodiments are merely examples, and do not limit the present invention. Various modifications can be made within the technical scope of the present invention.
Claims
1 . 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の印刷画像 を含む真偽判別印刷物であって、 1. A true / false discrimination print including at least a first print image and a second print image in at least a part of the design,
前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィン クを用いて形成されていることにより、 赤外部の反射率が 3 0 %以上で、 所定の 磁気強度を有し、 Since the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more, the reflectance of the infrared light is 30% or more. Has a magnetic strength of
前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の 差を有し、 前記所定の磁気強度と略同一の磁気強度を有することを特徴とする真 偽判別印刷物。 The second printed image is characterized in that the reflectance of infrared light has a difference of 10% or more from that of the first printed image and has substantially the same magnetic intensity as the predetermined magnetic intensity. False discrimination printed matter.
2 . 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の印刷画像 を含む真偽判別印刷物であって、 2. A true / false discrimination printed matter including at least a first print image and a second print image in at least a part of the design,
前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィン クを用いて形成されていることにより、 赤外部の反射率が 3 0 %以上で、 所定の 磁気強度を有し、 Since the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more, the reflectance of the infrared light is 30% or more. Has a magnetic strength of
前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の 差を有し、 前記所定の磁気強度と異なる磁気強度を有し、 The second print image has a difference in reflectance of infrared light of 10% or more from the first print image, and has a magnetic intensity different from the predetermined magnetic intensity;
前記第 1、 第 2の印刷画像のうち、 相対的に赤外部の反射率が低い方が相対的 に高い磁気強度を有することを特徴とする真偽判別印刷物。 The authenticity discrimination printed matter, wherein, of the first and second print images, the one having a relatively low reflectance in the infrared region has a relatively high magnetic strength.
3 . 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の印刷画像 を含む真偽判別印刷物であって、 3. A true / false discrimination print including at least a first print image and a second print image on at least a part of the design,
前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィン クを用いて形成されていることにより、 赤外部の反射率が 3 0 %以上で、 所定の 磁気強度を有し、 Since the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more, the reflectance of the infrared light is 30% or more. Has a magnetic strength of
前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の 差を有し、 前記所定の磁気強度と異なる磁気強度を有し、 The second print image has a difference in reflectance of infrared light of 10% or more from the first print image, and has a magnetic intensity different from the predetermined magnetic intensity;
前記第 1、 第 2の印刷画像のうち、 相対的に赤外部の反射率が高い方が相対的
に高い磁気強度を有することを特徴とする真偽判別印刷物。 Of the first and second print images, the one with a relatively higher reflectance in the infrared portion is relatively Printed matter having high magnetic strength.
4 . 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の印刷画像 を含む真偽判別印刷物であって、 4. A genuine / judgment printed material including at least a first print image and a second print image in at least a part of the design,
前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィン クを用いて形成されていることにより、 赤外部の反射率が 3 0 %以上で、 所定の 磁気強度を有し、 Since the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more, the reflectance of the infrared light is 30% or more. Has a magnetic strength of
前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と略同一であり、 前記所定の磁気強度より低い磁気強度を有することを特徴とする真偽判別印刷物 < The authenticity discrimination printed material, wherein the second printed image has substantially the same infrared reflectance as the first printed image, and has a magnetic intensity lower than the predetermined magnetic intensity.
5 . 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の印刷画像 を含む真偽判別印刷物であって、 5. A true / false discrimination print including at least a first print image and a second print image in at least a part of the design,
前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィン クを用いて形成されていることにより、 赤外部の反射率が 3 0 %以上で、 所定の 磁気強度を有し、 所定の赤外部の透過量を有し、 Since the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more, the reflectance of the infrared light is 30% or more. Has a magnetic intensity of, and has a predetermined infrared transmission amount,
前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の 差を有し、 前記所定の磁気強度と略同一の磁気強度を有し、 前記所定の赤外部の 透過量と略同一の性外部の透過量を有することを特徴とする真偽判別印刷物。 The second print image has a difference in reflectance of the infrared outside of the first print image of 10% or more, has a magnetic intensity substantially the same as the predetermined magnetic intensity, and An authenticity discrimination printed material having an external transmission amount substantially equal to the external transmission amount.
6 . 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の印刷画像 を含む真偽判別印刷物であつて、 6. At least a part of the design is a genuineness / authentication printed matter including at least the first print image and the second print image,
前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィン クを用いて形成されていることにより、 赤外部の反射率が 3 0 %以上で、 所定の 磁気強度を有し、 前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画 像と 1 0 %以上の差を有し、 前記所定の磁気強度と異なる磁気強度を有し、 前記第 1、 第 2の印刷画像のうち、 相対的に赤外部の反射率が低い方が相対的 に高い磁気強度を有し、 相対的に赤外部の反射率が低い方が相対的に少ない赤外 部の透過量を有することを特徴とする真偽判別印刷物。
Since the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more, the reflectance of the infrared light is 30% or more. The second printed image has a difference in reflectance of infrared light of 10% or more from the first printed image, and has a magnetic intensity different from the predetermined magnetic intensity. In the first and second printed images, the one having a relatively low reflectance in the infrared portion has a relatively high magnetic intensity, and the one having a relatively low reflectance in the infrared portion has a relatively high magnetic intensity. A true / false discrimination print having a very small infrared transmission amount.
7 . 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の印刷画像 を含む真偽判別印刷物であって、 7. A true / false distinction printed matter including at least a first printed image and a second printed image in at least a part of the design,
前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィン クを用いて形成されていることにより、 赤外部の反射率が 3 0 %以上で、 所定の 磁気強度を有し、 所定の赤外部の透過量を有し、 Since the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more, the reflectance of the infrared light is 30% or more. Has a magnetic intensity of, and has a predetermined infrared transmission amount,
前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の 差を有し、 前記所定の磁気強度と異なる磁気強度を有し、 前記所定の赤外部の透 過量と略同一の赤外部の透過量を有し、 The second print image has a difference in reflectance of infrared light of 10% or more from the first print image, has a magnetic intensity different from the predetermined magnetic intensity, and has a predetermined infrared intensity. Has the same amount of transmission in the infrared region as the amount of transmission,
前記第 1、 第 2の印刷画像のうち、 相対的に赤外部の反射率が高い方が相対的 に高い磁気強度を有することを特徴とする真偽判別印刷物。 The authenticity discrimination printed material, wherein, of the first and second print images, the one having a relatively high reflectance in the infrared region has a relatively high magnetic intensity.
8 . 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の印刷画像 を含む真偽判別印刷物であって、 8. A true / false discrimination printed matter including at least a first print image and a second print image in at least a part of the design,
前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィン クを用いて形成されていることにより、 赤外部の反射率が 3 0 %以上で、 所定の 磁気強度を有し、 所定の赤外部の透過量を有し、 Since the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more, the reflectance of the infrared light is 30% or more. Has a magnetic intensity of, and has a predetermined infrared transmission amount,
前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と略同一であり、 前記所定の磁気強度より低い磁気強度を有し、 前記所定の赤外部の透過量より多 い赤外部の透過量を有することを特徴とする真偽判別印刷物。 The second printed image has substantially the same infrared reflectance as the first printed image, has a lower magnetic intensity than the predetermined magnetic intensity, and has a transmission intensity higher than the predetermined infrared light transmission amount. A true / false discrimination print having an infrared transmission amount.
9 . 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の印刷画像 を含む真偽判別印刷物であって、 9. A true / false discrimination print including at least a first print image and a second print image in at least a part of the design,
前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィン クを用いて形成されていることにより、 赤外部の反射率が 3 0 %以上で、 所定の 磁気強度を有し、 裏面側に赤外部の光を吸収するィンクにより印刷が施されて所 定の赤外部の透過量を有し、 Since the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more, the reflectance of the infrared light is 30% or more. Has a magnetic intensity of, and is printed on the back side by an ink that absorbs light in the infrared region, and has a predetermined transmission amount in the infrared region,
前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と 1 0 %以上の 差を有し、 前記所定の磁気強度と異なる磁気強度を有し、 前記所定の赤外部と略 同一の赤外部の透過量を有し、
前記第 1、 第 2の印刷画像のうち、 相対的に赤外部の反射率が低い方が相対的 に高い磁気強度を有することを特徴とする真偽判別印刷物。 The second print image has a reflectance of infrared of 10% or more different from that of the first print image, has a magnetic intensity different from the predetermined magnetic intensity, and has a predetermined infrared intensity. Have substantially the same infrared transmission amount, The authenticity discrimination printed matter, wherein, of the first and second print images, the one having a relatively low reflectance in the infrared region has a relatively high magnetic strength.
1 0 . 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の印刷画 像を含む真偽判別印刷物であって、 10. A true / false discrimination print including at least a first print image and a second print image in at least a part of the design,
前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の磁性材を含有するィン クを用いて形成されていることにより、 赤外部の反射率が 3 0 %以上で、 所定の 磁気強度を有し、 所定の赤外部の透過量を有し、 Since the first printed image is formed using an ink containing a magnetic material having an infrared reflectance of 30% or more, the reflectance of the infrared light is 30% or more. Has a magnetic intensity of, and has a predetermined infrared transmission amount,
前記第 2の印刷画像が、 赤外部の反射率が前記第 1の印刷画像と略同一であり、 前記所定の磁気強度より低い磁気強度を有し、 裏面側に赤外部の光を吸収するィ ンクにより印刷が施されて前記所定の赤外部の透過量と略同一の赤外部の透過量 を有することを特徴とする真偽判別印刷物。 The second print image has substantially the same infrared reflectance as the first print image, has a lower magnetic intensity than the predetermined magnetic intensity, and has a rear surface that absorbs infrared light. A printed matter printed by the ink and having a transmission amount of the infrared portion substantially equal to the transmission amount of the predetermined infrared portion.
1 1 . 前記第 1、 第 2の印刷画像は、 肉眼で色彩を相対的に識別することが 困難であることを特徴とする請求項 1乃至 1 0のいずれかに記載の真偽判別印刷 物。 11. The printed matter according to any one of claims 1 to 10, wherein it is difficult for the first and second printed images to relatively distinguish colors with the naked eye. .
1 2 . 前記第 1、 第 2の印刷画像は、 肉眼で色彩を相対的に識別することが 容易であることを特徴とする請求項 1乃至 1 0のいずれかに記載の真偽判別印刷 物。 12. The authenticity discrimination printed matter according to any one of claims 1 to 10, wherein the first and second print images are relatively easy to visually distinguish colors with the naked eye. .
1 3 . 印刷物の真偽判別を行う方法において、 1 3. In the method of determining the authenticity of printed matter,
前記印刷物が、 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の 印刷画像を含み、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の第 1の 磁性材を含有するインクを用いて形成されており、 前記第 2の印刷画像が、 赤外 部の反射率が前記第 1の磁性材と 1 0 %以上の差を有する第 2の磁性材を含有す るインクを用いて形成されており、 この印刷物に対し、 前記第 1、 第 2の印刷画 像のそれそれの赤外部の反射率及び磁気強度を検出して照合することによって、 印刷物の真偽判別を行うことを特徴とする真偽判別方法。
The printed material includes at least a first print image and a second print image in at least a part of a design, and the first print image has a reflectance of 30% or more of infrared light. Wherein the second printed image contains a second magnetic material having a difference of 10% or more in reflectance of an infrared part from the first magnetic material. The authenticity of the printed matter is determined by detecting and comparing the reflectance and the magnetic intensity of each of the first and second printed images in the infrared region of the printed matter. A true / false judgment method characterized by performing judgment.
1 4 . 印刷物の真偽判別を行う方法において、 1 4. In the method of determining the authenticity of printed matter,
前記印刷物が、 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の 印刷画像を含み、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の第 1の 磁性材を含有するインクを用いて形成されており、 前記第 2の印刷画像が、 赤外 部の反射率が前記第 1の磁性材と 1 0 %以上の差を有する第 2の磁性材を含有す るインクを用いて形成されており、 この印刷物に対し、 前記第 1、 第 2の印刷画 像のそれそれの可視光部の光学情報、 赤外部の反射率、 及び磁気強度を検出して 照合することによって、 印刷物の真偽判別を行うことを特徴とする真偽判別方法 The printed material includes at least a first print image and a second print image in at least a part of a design, and the first print image has a reflectance of 30% or more of infrared light. Wherein the second printed image contains a second magnetic material having a difference of 10% or more in reflectance of an infrared part from the first magnetic material. Of the first and second printed images, the optical information of the visible light portion, the reflectivity of the infrared region, and the magnetic intensity of the first and second printed images. Authenticity determination method for determining the authenticity of a printed matter
1 5 . 印刷物の真偽判別を行う方法において、 1 5. In the method of determining the authenticity of printed matter,
前記印刷物が、 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の 印刷画像を含み、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の第 1の 磁性材を含有するインクを用いて形成されており、 前記第 2の印刷画像が、 赤外 部の反射率が前記第 1の磁性材と 1 0 %以上の差を有する第 2の磁性材を含有す るインクを用いて形成されており、 この印刷物に対し、 前記第 1、 第 2の印刷画 像のそれそれの赤外部の反射率、 磁気強度、 及び赤外部の透過量を検出して照合 することによって、 印刷物の真偽判別を行うことを特徴とする真偽判別方法。 The printed material includes at least a first print image and a second print image in at least a part of a design, and the first print image has a reflectance of infrared light of 30% or more of a first magnetic material. Wherein the second printed image contains a second magnetic material having a difference of 10% or more in reflectance of an infrared part from the first magnetic material. The first and second printed images of the first and second printed images are detected and collated by detecting the reflectance in the infrared region, the magnetic intensity, and the amount of transmission in the infrared region. A true / false determination method for determining whether the printed matter is true or false.
1 6 . 印刷物の真偽判別を行う方法において、 1 6. In the method of determining the authenticity of printed matter,
前記印刷物が、 図柄の少なくとも一部に、 少なくとも第 1の印刷画像と第 2の 印刷画像を含み、 前記第 1の印刷画像が、 赤外部の反射率が 3 0 %以上の第 1の 磁性材を含有するインクを用いて形成されており、 前記第 2の印刷画像が、 赤外 部の反射率が前記第 1の磁性材と 1 0 %以上の差を有する第 2の磁性材を含有す るインクを用いて形成されており、 この印刷物に対し、 前記第 1、 第 2の印刷画 像のそれぞれの可視光部の光学情報、 赤外部の反射率、 磁気強度、 及び赤外部の 透過量を検出して照合することによって、 印刷物の真偽判別を行うことを特徴と する真偽判別方法。
The printed material includes at least a first print image and a second print image in at least a part of a design, and the first print image has a reflectance of 30% or more of infrared light. Wherein the second printed image contains a second magnetic material having a difference of 10% or more in reflectance of an infrared part from the first magnetic material. The first and second printed images have optical information in the visible light portion, reflectance in the infrared region, magnetic intensity, and transmission amount in the infrared portion. A true / false discrimination method characterized in that the authenticity of a printed matter is determined by detecting and collating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002552765A JP4235968B2 (en) | 2000-12-26 | 2001-12-25 | Authenticity discrimination printed matter and authentication method |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000-394811 | 2000-12-26 | ||
| JP2000394811 | 2000-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002051643A1 true WO2002051643A1 (en) | 2002-07-04 |
Family
ID=18860377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2001/011395 WO2002051643A1 (en) | 2000-12-26 | 2001-12-25 | Authenticity discriminating printed matter and authenticity discriminating method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4235968B2 (en) |
| WO (1) | WO2002051643A1 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004142175A (en) * | 2002-10-23 | 2004-05-20 | Tokushu Paper Mfg Co Ltd | Thread having truth or falsehood determining function and forgery preventive sheet using the same |
| JP2005161792A (en) * | 2003-12-05 | 2005-06-23 | Omron Corp | Recording medium, issue apparatus recording medium and reader of recording medium |
| JP2005268655A (en) * | 2004-03-19 | 2005-09-29 | National Printing Bureau | Magnetic printed matter |
| JP2005264074A (en) * | 2004-03-19 | 2005-09-29 | National Printing Bureau | Magnetic ink composition and printed product of the same |
| JP2006095947A (en) * | 2004-09-30 | 2006-04-13 | Fuji Xerox Co Ltd | Image processor and image forming device |
| JP2008188974A (en) * | 2007-02-08 | 2008-08-21 | National Printing Bureau | Image forming body |
| JP2009000832A (en) * | 2007-06-19 | 2009-01-08 | National Printing Bureau | Forgery-proof printed matter |
| JP2009006724A (en) * | 2008-09-29 | 2009-01-15 | Hitachi Omron Terminal Solutions Corp | Recording medium |
| JP2015196819A (en) * | 2014-04-03 | 2015-11-09 | 独立行政法人 国立印刷局 | Infrared-transmitting soft magnetic ink and printed matter for authenticity discrimination |
| JP2018136742A (en) * | 2017-02-22 | 2018-08-30 | 沖電気工業株式会社 | Bank bill discrimination device and cash processing device |
| CN109562629A (en) * | 2016-08-04 | 2019-04-02 | 默克专利股份有限公司 | Method for generating optically-variable printed patterns |
| WO2020249259A1 (en) * | 2019-06-13 | 2020-12-17 | Giesecke+Devrient Currency Technology Gmbh | Security element with printing inks that vary upon illumination with electromagnetic radiation in the infrared wavelength range |
| CN113096301A (en) * | 2019-12-19 | 2021-07-09 | 深圳怡化电脑股份有限公司 | Bill inspection method, bill inspection device, electronic device, and storage medium |
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| JP2004142175A (en) * | 2002-10-23 | 2004-05-20 | Tokushu Paper Mfg Co Ltd | Thread having truth or falsehood determining function and forgery preventive sheet using the same |
| JP2005161792A (en) * | 2003-12-05 | 2005-06-23 | Omron Corp | Recording medium, issue apparatus recording medium and reader of recording medium |
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| CN109562629A (en) * | 2016-08-04 | 2019-04-02 | 默克专利股份有限公司 | Method for generating optically-variable printed patterns |
| CN109562629B (en) * | 2016-08-04 | 2021-02-02 | 默克专利股份有限公司 | Method for producing an optically variable printing pattern |
| JP2018136742A (en) * | 2017-02-22 | 2018-08-30 | 沖電気工業株式会社 | Bank bill discrimination device and cash processing device |
| WO2020249259A1 (en) * | 2019-06-13 | 2020-12-17 | Giesecke+Devrient Currency Technology Gmbh | Security element with printing inks that vary upon illumination with electromagnetic radiation in the infrared wavelength range |
| CN113096301A (en) * | 2019-12-19 | 2021-07-09 | 深圳怡化电脑股份有限公司 | Bill inspection method, bill inspection device, electronic device, and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2002051643A1 (en) | 2004-04-22 |
| JP4235968B2 (en) | 2009-03-11 |
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