JP2019156917A - Magnetic ink and forgery prevention printed matter - Google Patents

Abstract

To provide a magnetic ink hardly available, and a forgery prevention printed matter having enhanced forgery resistance by using the magnetic ink.SOLUTION: There are provided a magnetic ink containing a soft magnetic material and a semi-hard magnetic material, and having infrared ray permeation characteristics and magnetic properties of both of the soft magnetic material and the semi-hard magnetic material, and a forgery prevention printed matter having a first area printed by using the magnetic ink and a second area printed by using other inks having at least one of magnetic properties and infrared ray permeation characteristics is different from the magnetic ink on a substrate, and having isochromatic property with the first area and the second area under visible lights.SELECTED DRAWING: Figure 1

Description

  The present invention relates to magnetic ink and anti-counterfeit printed matter.

  For authenticity determination of printed matter by mechanical processing, identification using optical characteristics based on the degree of absorption of infrared rays using the characteristics that the materials contained in the ink absorb infrared rays with an infrared scanner or infrared sensor, and simply changing the magnetism. Magnetism is specified by a magnetoresistive sensor (hereinafter referred to as “MR sensor”) to be detected or a magnetic impedance sensor (hereinafter referred to as “MI sensor”) whose impedance changes in response to an external magnetic field when a recently developed high frequency current is applied. Methods are used.

  On the other hand, as a magnetic reading material with a higher level of anti-counterfeiting effect, there is an increasing need for composite functional materials that have both magnetic and infrared characteristics, and soft magnetism is used for authenticating printed matter by machine processing. Examples of use in which infrared reflection characteristics, infrared transmission characteristics, or infrared absorption characteristics are added to characteristics or semi-hard magnetic characteristics are also disclosed.

  As an example, as a magnetic ink having infrared transmission characteristics, a residual ink has characteristics of 25 to 35 (emu / g), a coercive force of 250 to 400 (Oe), and an average particle diameter of 10 to 600 (nm). A magnetic ink composition containing a hard magnetic material and a vehicle is disclosed (for example, see Patent Document 1).

  The magnetic ink having infrared absorption characteristics includes a photopolymerizable acrylate oligomer having an acid value of 50 to 300 mgKOH / g, a photopolymerizable acrylate monomer, a semi-hard magnetic powder, a varnish resin, and a photoinitiator as essential components. An active energy ray-curable magnetic ink composition and a printed material thereof are disclosed (for example, see Patent Document 2).

  In addition, as a technique for separately providing authenticity determination techniques for both magnetic characteristics and infrared characteristics, the first print image and the second print image are made to be the same color, the first print image contains magnetism, and infrared rays A valuable print printed with an ink containing a dye having a property of absorbing infrared rays and printed with an ink containing a dye having a property of reflecting infrared rays is disclosed. (For example, refer to Patent Document 3).

JP 2005-264074 A JP 2010-202772 A JP 2004-090387 A

  However, although the technology described in Patent Document 1 is difficult to specify magnetic information with an MR sensor that simply detects a change in magnetism, a material having semi-hard magnetic characteristics is specified to provide magnetic characteristics and optical characteristics. ing. For this reason, there is a possibility that the magnetic characteristics are imitated because the residual magnetization is large and the detection of the residual magnetization by the MI sensor or the like makes it easy to detect the magnetic characteristics.

  The technique described in Patent Document 2 uses a semi-hard magnetic material having a black infrared absorption characteristic for reading barcodes and the like, and is widely used in various industries. It is available. For this reason, there is a risk of imitation, there is a problem with resistance to forgery, and further improvement of forgery prevention has been demanded.

  In the technique of Patent Document 3, the ink of the first print image has magnetic characteristics and has absorption characteristics in the infrared region. However, it is known that a general magnetic ink uses an iron oxide-based black material and has a black color inherent to the material, and therefore has an absorption characteristic in the infrared region. On the other hand, the ink of the second printed image does not have magnetic characteristics but exhibits transmission characteristics in the infrared region. However, a general ink has transmission characteristics in the infrared region when a carbon black material is not used. Furthermore, the iron oxide-based black material and the carbon black-based material used for the first printed image are easily available because they are widely used in various industries. For this reason, the combination of the magnetic characteristics and infrared characteristics of the first and second printed images has a problem in forgery resistance, and further improvement in forgery prevention has been demanded.

  In view of the above-described circumstances, an object of the present invention is to provide a magnetic ink that is not easily available and a forgery-preventing printed matter that can improve forgery resistance by using this magnetic ink.

  The magnetic ink of the present invention contains a soft magnetic material and a semi-hard magnetic material, and has infrared transmission characteristics. Further, the soft magnetic material is blended in the range of 9 to 20% by weight, and the semi-hard magnetic material is blended in the range of 1 to 10% by weight.

  The anti-counterfeit printed matter of the present invention was printed using a first region printed using magnetic ink, and another ink having at least one of magnetic characteristics and infrared transmission characteristics different from magnetic ink. And having the second region on one surface of the substrate or on one surface and the other surface, the first region and the second region have color matching properties under visible light. Features.

  The magnetic ink of the present invention has both infrared transmission characteristics and magnetic characteristics of both a soft magnetic material and a semi-hard magnetic material. By using such a magnetic ink, the anti-counterfeit printed matter of the present invention Since it is not easy to detect the characteristics and it is not easy to obtain ink, forgery resistance can be improved.

The top view which shows the schematic example of the forgery prevention printed matter by the 1st-16th embodiment of this invention, and sectional drawing which shows the longitudinal cross-section in alignment with the X-X 'line | wire in this top view. The infrared reflection characteristic view which shows an example of the infrared reflectance which each of the 1st print image and the 2nd print image in the forgery prevention printed matter by the 1st-16th embodiment of this invention has. The top view which shows the visual recognition effect at the time of observing the forgery prevention printed matter by 1st-16th embodiment of this invention under visible light. A longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the first embodiment printed using inks A and B according to ink form 1 of the present invention according to printing form 1, and a magnetic characteristic showing a detected amount of magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 1st Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. A longitudinal section showing the structure of the anti-counterfeit printed matter according to the second embodiment printed using the inks A and B according to the ink form 1 of the present invention according to the print form 2 and the magnetic characteristics showing the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 2nd Embodiment, and the infrared transmission characteristic figure which shows infrared rays transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the third embodiment printed using the inks A and B according to the ink form 1 of the present invention according to the printing form 3, and the magnetic characteristics showing the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 3rd Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed material according to the fourth embodiment printed using the inks A and B according to the ink form 1 of the present invention according to the printing form 4, and the magnetic characteristics showing the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 4th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the fifth embodiment printed using the inks A and C according to the ink form 2 of the present invention according to the printing form 1, and the magnetic characteristics showing the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 5th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the sixth embodiment printed using the inks A and C according to the ink form 2 of the present invention according to the print form 2 and the magnetic characteristics showing the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 6th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the seventh embodiment printed using the inks A and C according to the ink form 2 of the present invention according to the printing form 3, and the magnetic characteristics showing the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 7th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the eighth embodiment printed using the inks A and C according to the ink form 2 of the present invention according to the printing form 4, and the magnetic characteristics showing the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 8th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the ninth embodiment printed using the inks A and D according to the ink form 3 of the present invention and the magnetic characteristics showing the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 9th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the tenth embodiment printed using the inks A and D according to the ink form 3 of the present invention according to the printing form 2, and the magnetic characteristics showing the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 10th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of an anti-counterfeit printed matter according to the eleventh embodiment printed using the inks A and D according to the ink form 3 of the present invention and the magnetic characteristic indicating the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 11th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the twelfth embodiment printed using the inks A and D according to the ink form 3 of the present invention and the magnetic characteristics indicating the detected amount of the magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 12th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the thirteenth embodiment printed using inks A and E according to ink form 4 of the present invention and magnetic characteristics showing the detected amount of magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 13th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. A longitudinal sectional view showing the structure of a forgery-preventing printed material according to the fourteenth embodiment printed using inks A and E according to ink form 4 of the present invention according to printing form 2, and a magnetic characteristic showing the detected amount of magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 14th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the fifteenth embodiment printed using inks A and E according to ink form 4 of the present invention and magnetic characteristics showing the detected amount of magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 15th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount. Longitudinal sectional view showing the structure of a forgery-preventing printed matter according to the sixteenth embodiment printed using the inks A and E according to the ink form 4 of the present invention and the magnetic characteristics showing the detected amount of magnetic impedance Figure. The longitudinal cross-sectional view which shows the structure of the forgery prevention printed matter by 16th Embodiment, and the infrared transmission characteristic figure which shows infrared transmission amount.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, in each embodiment, the same code | symbol is attached | subjected to the same component and the overlapping description is abbreviate | omitted.

  FIG. 1A shows, as a plan view, an example of a forgery-preventing printed matter (hereinafter referred to as “printed matter”) according to first to sixteenth embodiments of the present invention, which will be described later, and is an XX ′ line in this plan view. FIG. 1B shows a longitudinal section along the line.

  The printed material 1 a has a forgery-preventing printing region 3 at least at a part on the substrate 2. A printed image 4 having a single pattern is formed in the forgery prevention printing area 3. The print image 4 is formed by combining the first print image 4a and the second print image 4b.

  The first print image 4a is represented by a hatched area along one direction in the figure, and the second print image 4b is represented by a hatched area along the other direction. The first print image 4a and the second print image 4b are indicated by hatching for the sake of explanation, but are not limited to hatching in an actual printed matter, such as solid, halftone dots, line drawings, etc. Everything that can form is included.

  The first print image 4a and the second print image 4b shown in FIG. 1 are in contact with or adjacent to each other in at least a part of the region, but are not necessarily in contact with each other or adjacent to each other. It may be.

  The first print image 4a and the second print image 4b are printed so that they can be visually recognized with almost the same color when observed with the naked eye in order to obtain an anti-counterfeit effect. The pattern formed by the first print image 4a and the second print image 4b is not limited, and natural objects and shaped objects such as mountains, rivers, plants, animals, people, buildings, vehicles, symbols , Marks, numbers, etc., as appropriate, are included.

  The ink A that forms the first print image 4a in the first to sixteenth embodiments of the present invention will be described below.

  The ink A forming the first printed image 4a has infrared transmission characteristics and magnetic characteristics of both a soft magnetic material and a semi-hard magnetic material.

  The ink A contains 10 to 30% by weight of a material obtained by mixing a soft magnetic material and a semi-hard magnetic material with respect to the total weight of the pigment, varnish, desiccant and the like.

  Examples of the soft magnetic material include magnesium-based ferrite (Mg-based ferrite) or nickel-based ferrite (Ni-based ferrite). Examples of magnesium ferrite (Mg ferrite) include Mg—Zn ferrite, Mn—Mg ferrite, Ca—Mg ferrite, Cu—Zn—Mg ferrite, and Cu—Zn—Zr—Mg ferrite. Examples of nickel-based ferrite (Ni-based ferrite) include Ni—Zn ferrite, Cu—Zn ferrite, and Ni—Cu—Zn ferrite. Particularly suitable is Cu—Zn—Mg based ferrite. This material is less harmful and harmful to the human body than nickel-based materials, and has good infrared transmission characteristics. Furthermore, in order to improve the wetting of the varnish used and the fluidity of the ink, a surface treatment such as stearic acid may be applied.

Examples of the semi-hard magnetic material include maghemite and barium ferrite whose main component is iron oxide (Fe ₂ O ₃ ). Examples of maghemite include spherical / granular crystal maghemite.

  Examples of the varnish include oils and fats such as linseed oil, olive oil, castor oil and sunflower oil, natural waxes such as whale wax, beeswax, lanolin, carnauba wax, canderia wax and montan wax, paraffin wax, and microcrystalline wax. , Synthetic waxes such as oxidized wax, ester wax, and low molecular weight polyethylene, higher fatty acids such as lauric acid, myristic acid, palmitic acid, stearic acid, fumenic acid and hebenic acid, and higher alcohols such as stearyl alcohol and hebenyl alcohol , Soaps such as petrolatum and glycerin, hydrocarbons such as glucose, ethylene glucose and amylose, esters such as fatty acid esters, amides such as stearamide and oleinamide, polyamide resins, polyester resins, Poxy resin, polyurethane resin, acrylic resin, vinyl chloride resin, cellulose resin, polyvinyl resin, petroleum resin, ethylene-vinyl acetate copolymer resin, phenol resin, styrene resin, rosin modified resin, Resins such as terbin resin, natural rubber, styrene butadiene rubber, isoprene rubber, chloroprene rubber and other elastomers, hydrogenated petroleum resin, silicone, liquid paraffin, fluororesin and other tackifiers, etc. Can be used.

  As additives, for example, pigments, dyes, surfactants, fillers, antioxidants, drying agents and the like can be used.

  The color of the ink A is not limited as long as it is substantially the same color. For example, it is possible to easily adjust the color matching by appropriately blending yellow, red, and blue pigments taking black color as an example.

  The drying method of the ink A is not limited to, for example, an ultraviolet curable ink, an oxidation polymerizable ink, an ultraviolet curable oxidative polymerization combined type ink, a solvent type ink, and an aqueous evaporation type ink.

  In addition, the ink A can contain functional pigments such as pearl pigments, glass flakes, cholesteric liquid crystal pigments, fluorescent pigments and phosphorescent pigments, as long as they do not affect both the magnetic properties and the infrared properties. Additional effects can be added.

  The substrate of the printed matter of the present invention is not particularly limited as long as it reflects or transmits infrared rays. For example, paper such as high-quality paper, coated paper, art paper, plastic, and the like can be used. .

  This ink A forming the first printed image 4a has a coercive force of 105 to 210 (Oe) and a residual magnetization of 1.5 to 8.0 (emu / g), and exhibits transmission characteristics in the infrared region. Have. In addition, since the infrared transmission characteristic is influenced by the material and thickness of the base material, the infrared reflection characteristic needs to be in the range of 60 to 90% by weight, for example, in the vicinity of 940 (nm). . If the coercive force and the residual magnetization are within the above-described ranges, it is possible to easily determine authenticity by using a true / false determination method based on magnetic characteristics described later without using a special determination device.

  Here, residual magnetization refers to magnetization that remains after a magnetic field is applied to a magnetic material and after the magnetic field is removed. The coercive force is the strength of a magnetic field that returns a magnetized magnetic body to an unmagnetized state. A soft magnetic material is a magnetic material that is magnetized under an external magnetic field, but loses magnetization when the external magnetic field disappears, has a low coercive force, and has a high magnetic permeability.

  The average particle size of the soft magnetic material is preferably 1 to 10 (μm). In order to make the first print image 4a and the second print image 4b substantially the same color, the three primary colors yellow, red, and blue color pigments and black azo pigments are appropriately added and toned. Is desirable.

Semi-hard magnetic ink has magnetism intermediate between soft magnetism and semi-hard magnetism. Ink A, the blending ratio of the soft magnetic material and the semi-hard magnetic material is preferably in the following range.
(Minimum) Soft magnetic material 9% by weight-Semi-hard magnetic material 1% by weight
(Maximum) Soft magnetic material 20% by weight-Semi-hard magnetic material 10% by weight

  In addition, when the blending ratio of the soft magnetic material and the semi-hard magnetic material is less than the minimum combination, the output value of the magnetic characteristics becomes too low and it may be difficult to detect.

  If the blending ratio of soft magnetic material and semi-hard magnetic material exceeds the maximum combination, the output value of magnetic characteristics will be larger than necessary, and it will be detected excessively, and forgery resistance may be reduced There is. Furthermore, the oil content becomes too small, and the pigment cannot be surrounded by the oil content, making it difficult to transfer to the base material. This may affect the ink characteristics, and as a result, the suitability as a printed matter may be impaired.

  Hereinafter, in the first to sixteenth embodiments of the present invention, the inks B to E for forming the second print image 4b will be described.

  Ink B has infrared absorption characteristics and does not contain any magnetic material and does not have magnetism. Ink B mainly contains carbon black in addition to the pigment, varnish, and desiccant. When this ink B is selected to form the second print image 4b, the ink transmission characteristic is different from the ink A forming the first print image 4a, and an anti-counterfeit effect is obtained.

  Ink C has infrared absorption characteristics and includes only a soft magnetic material and has soft magnetism. Ink C is mainly blended with 9-20% by weight of soft magnetic material and carbon black based on the total weight of pigment, varnish and desiccant. When this ink C is selected to form the second print image 4b, the ink A that forms the first print image 4a has different infrared transmission characteristics and has different magnetic characteristics due to its soft magnetism. . The ink C includes a soft magnetic material, so that the color matching with the ink A forming the first printed image 4a is improved as compared with the ink B. When the ink C is observed under visible light, It becomes more difficult to identify the print image 4a and the second print image 4b.

  Ink D has infrared absorption characteristics and includes only a semi-hard magnetic material and has semi-hard magnetism. Ink D contains 1 to 10% by weight of a semi-hard magnetic material and carbon black based on the total weight of pigment, varnish, and desiccant. When this ink D is selected to form the second print image 4b, the infrared transmission characteristics are different from the ink A forming the first print image 4a, and the magnetic characteristics differ by including only a semi-hard magnetic material. Is obtained. The ink D contains a soft magnetic material, so that the color matching with the ink A forming the first printed image 4a is improved as compared with the ink B. When the ink D is observed under visible light, It becomes more difficult to identify the print image 4a and the second print image 4b.

  Ink E has infrared absorption characteristics, and includes both a soft magnetic material and a semi-hard magnetic material, and has both magnetic characteristics. Ink E is mainly composed of 9 to 20% by weight of soft magnetic material, 1 to 10% by weight semi-hard magnetic material and carbon black based on the total weight of pigment, varnish and desiccant. When this ink E is selected to form the second print image 4b, although there is no difference in magnetic properties from the ink A forming the first print image 4a, different infrared transmission properties are obtained. This ink E contains a soft magnetic material and a semi-hard magnetic material, so that the color matching with the ink A forming the first printed image 4a is further improved compared with the inks B, C and D, and visible. When observed under light, it becomes more difficult to identify the first print image 4a and the second print image 4b, and the forgery prevention effect is improved.

  The ink film thickness of the first print image 4a and the second print image 4b may be, for example, 5 to 50 μm.

  FIG. 2 illustrates the relationship between the infrared reflectance 16a of the first print image 4a and the infrared reflectance 16b of the second print image 4b when authenticity determination is performed using infrared transmission characteristics.

  The infrared reflectance 16a of the first printed image 4a having infrared transmission characteristics is preferably in the range of 60 to 90%, for example. The infrared reflectance 16b of the second printed image 4b having infrared absorption characteristics is preferably in the range of 10 to 30%, for example. In this case, since there is a difference of 40% between the infrared reflectance 16a of the first printed image 4a and the infrared reflectance 16b of the second printed image 4b, a highly accurate authenticity is obtained. The discrimination can be easily performed. In addition, although infrared rays here mean the thing in the range whose wavelength is 0.7-2.5 micrometers, what is in the range which is 0.9-1.0 micrometer is desirable.

In FIG. 3, in the anti-counterfeit printing region 3, the first printed image 4 a and the second printed image 4 b are formed in combination, and a single design printed image 4 illustrating a single building is visible light. The visual recognition result obtained when observing with the naked eye below is shown. As described above, since the first print image 4a and the second print image 4b have the same color characteristics, it is extremely difficult to distinguish and visually recognize the two as a single print image 4. .
Next, printed materials according to the first to sixteenth embodiments will be described.

(1) Printed matter according to the first embodiment A printed matter 101 according to the first embodiment, which is printed in the printing form 1 using the ink according to the ink form 1 as described below, will be described.

1) Form of ink: 1
Two types of inks A and B having the following characteristics are used.
Ink A: has infrared transmission characteristics.
Contains a soft magnetic material and a semi-hard magnetic material, and has both magnetic properties.
Ink B: has infrared absorption characteristics.
Does not contain magnetic material and does not have magnetism.

2) Printing form: 1
As shown in FIG. 4 (a) and FIG. 5 (a), the region in which the left half of the pattern illustrating the single building is printed using ink A only on one surface of the substrate. 101A is formed, and the right half of the pattern is printed using ink B to form region 101B.

  As the magnetic characteristics, as shown in FIG. 4B, the printed material 101 is conveyed in a first direction (right direction in the drawing) corresponding to the long side direction of the printed material 101, and the magnetic impedance is read by the magnetic sensor 13. .

  In the region 101A printed using the ink A, a magnetic impedance 6b having a predetermined value is detected. In the region 101B printed using the ink B, the magnetic impedance 6a having a low zero level is almost the same as the region 8 not printed. Detected. When the first print image 4a and the second print image 4b are arranged so as to be adjacent to each other along the short side direction of the printed matter 101, the second direction (in the figure, orthogonal to the first direction). The printed matter 101 is conveyed in the vertical direction) and the magnetic impedance is read.

  When the authenticity of the printed material 101 is determined, it is possible to determine the authenticity of the printed material 101 by setting the reference value 7 and comparing the read magnetic impedances 6a and 6b with the reference value 7.

  As infrared transmission / absorption characteristics, as shown in FIG. 5B, the printed material 101 is conveyed in the first direction and the infrared sensor 12 measures the amount of infrared transmission. In the region 101A printed using the ink A, the infrared transmission amount 10b which is lower to some extent than the infrared transmission amount 10a in the region 8 where no ink is present due to the presence of the ink A is measured. In the region 101B printed using the ink B, the infrared transmission amount 10c that is greatly reduced due to absorption of infrared rays is measured.

  When the authenticity of the printed material 101 is determined, the reference value 11 is set, and the authenticity of the printed material 101 is determined by comparing and comparing the read infrared transmission amounts 10a, 10b, and 10c with the reference value 11. be able to.

(2) Printed matter according to the second embodiment A printed matter 102 according to the second embodiment printed using the ink according to the ink form 1 described above and printed according to the print form 2 will be described.

2) Printing form: 2
As shown in FIG. 6A and FIG. 7A, a region 102A1 is formed on one surface of the base material by printing the left half of the design using ink A to form ink B. Using this, the right half of the design is printed to form the region 102B1. On the other surface of the base material, the left half of the pattern is printed with the same area at the corresponding position on the back surface side of the region 102A1 using the ink A to form the region 102A2, and the region 102B1 using the ink B The region 102B2 is formed by printing the right half of the symbol with the same area at the corresponding position on the back side of the pattern.

  As the magnetic characteristics, as shown in FIG. 6B, the printed matter 102 is conveyed in the first direction, and the magnetic impedance is read by the magnetic sensor 13. In the areas 102A1 and 102A2 printed using the ink A, the magnetic impedance 6b that is twice as large as that of only one side is detected by being formed on the front and back sides, and in the areas 102B1 and 102B2 printed using the ink B, printing is performed. The low magnetic impedance 6a of almost zero level is detected in the same manner as the region 8 that is not.

  When the authenticity of the printed material 102 is determined, it is possible to determine the authenticity of the printed material 102 by setting the reference value 7 and comparing the read magnetic impedances 6a and 6b with the reference value 7.

  As the infrared transmission / absorption characteristic, as shown in FIG. 7B, the printed matter 102 is conveyed in the first direction and the transmission amount of the infrared sensor 12 is measured. In the regions 102A1 and 102A2 printed using the ink A, the infrared transmission amount 10b which is reduced to some extent by the presence of the ink A is measured as compared with the infrared transmission amount 10a in the region 8 where no ink is present. In the regions 102B1 and 102B2 printed using the ink B, the infrared transmission amount 10c that is greatly reduced due to absorption of infrared rays is measured.

  When the authenticity of the printed material 102 is determined, the reference value 11 is set, and the read infrared transmission amounts 10a, 10b, and 10c are compared with the reference value 11 to determine the authenticity of the printed material 102. be able to.

(3) Printed matter according to the third embodiment A printed matter 103 according to the third embodiment, which is printed in the printing form 3 using the ink according to the ink form 1 described above, will be described.

2) Printing form: 3
As shown in FIG. 8A and FIG. 9A, a region 103A1 is formed on one surface of the base material by printing the left half of the design using ink A to form ink B. Using this, the right half of the design is printed to form the region 103B1. On the other surface of the substrate, the left half in the figure of the pattern is printed with a larger area than the region 103A1 at a corresponding position on the back side of the region 103A1 using the ink A to form the region 103A2. Is used to print the right half of the symbol in the figure with an area larger than that of the region 103B1 at a corresponding position on the back side of the region 103B1 to form the region 103B2.

  As a magnetic characteristic, when the printed matter 103 is conveyed in the first direction and the magnetic impedance is measured by the magnetic sensor 13 as shown in FIG. 8B, only the region 103A2 is printed out of the region printed using the ink A. In the existing area, a magnetic impedance 6b higher than the magnetic impedance 6a of the area 8 without ink is detected, and in the area where the area 103A1 and the area 103A2 overlap, the magnetic impedance twice as high as the magnetic impedance 6b is detected. Impedance 6c is detected. Among the areas printed using ink B, the area where only area 103B2 exists and the area where areas 103B1 and 103B2 overlap each other detect the same magnetic impedance 6a as area 8 where there is no ink. Is done.

  When determining the authenticity of the printed material 103, it is possible to determine the authenticity of the printed material 103 by setting the reference value 7 and comparing and comparing the read magnetic impedances 6a, 6b, and 6c with the reference value 7. it can.

  As the infrared transmission / absorption characteristic, when the printed matter 103 is conveyed in the first direction and the infrared transmission amount is measured by the infrared sensor 12 as shown in FIG. 9B, among the regions printed using the ink A, In the region where only the region 103A2 exists, the infrared transmission amount 10b which is lower to some extent than the infrared transmission amount 10a in the region 8 where no ink exists due to the presence of the ink A is measured. In the region where the regions 103A1 and 103A2 exist, the infrared transmission amount 10c which is reduced to twice the infrared transmission amount 10b due to the presence of the ink A is measured. Among the areas printed using the ink B, the most reduced infrared transmission amount 10d is measured in the area where the areas 103B1 and 102B2 exist. In the region where only the region 103B2 exists, the infrared transmission amount 10e that is the second largest drop is measured.

  When the authenticity of the printed material 103 is determined, the reference value 11 is set, and the read infrared transmission amounts 10a, 10b, 10c, 10d, and 10e are compared with the reference value 11 to verify the authenticity of the printed material 103. False can be determined.

(4) Printed matter according to the fourth embodiment A printed matter 104 according to the fourth embodiment, which is printed in the printing form 4 using the ink according to the ink form 1 described above, will be described.

2) Printing form: 4
As shown in FIGS. 10 (a) and 11 (a), an area 104A1 is formed on one surface of the base material by printing the upper left quarter of the design using ink A. , Ink B is used to print the upper right quarter of the pattern to form the region 104B2. Furthermore, on the same one surface of the base material, the lower left quarter of the pattern is printed using ink B to form a region 104B1, and the lower right quarter of the pattern is printed using ink A. 1 is printed to form the area 104A2. In this manner, the ink A region and the ink B region are arranged alternately along the first direction and the second direction.

  As a magnetic characteristic, when the printed matter 104 is conveyed in the first direction as shown in FIG. 10B and the magnetic impedance is measured by the magnetic sensor 13 along the first scanning line (not shown), a region 104A1 exists. In the region, a magnetic impedance 6b higher than the magnetic impedance 6a in the region 8 where no ink is present is detected. In the region where the region 104B2 exists, the same magnetic impedance 6a as that in the region 8 where no ink exists is detected. When the magnetic impedance is measured by the magnetic sensor 13 so as to cross the regions 104B1 and 104A2 in the printed matter 104 along the second scanning line that is separated from the first scanning line by a predetermined distance, in FIG. A result in which the left and right are interchanged is detected.

  When the authenticity of the printed matter 104 is determined, the reference value 7 is set, and the read / write magnetic impedances 6a and 6b are compared with the reference value 7 to determine the authenticity of the printed matter 104.

  As the infrared transmission / absorption characteristics, as shown in FIG. 11B, the printed matter 104 is conveyed in the first direction, and infrared transmission is performed by the infrared sensor 12 along the first scanning line crossing the areas 104A1 and 104B2. When the amount is measured, in the region where the region 104A1 exists, due to the presence of the ink A on one side, the infrared transmission amount 10b which is somewhat lower than the infrared transmission amount 10a of the region 8 where no ink exists is measured. . In the region where the region 104B2 exists, the greatly reduced infrared transmission amount 10a is measured. When the infrared transmission amount is measured by the infrared sensor 12 so as to cross the regions 100B1 and 104A2 in the printed matter 104 along the second scanning line separated from the first scanning line by a predetermined distance, FIG. ) In which the left and right are interchanged.

  When the authenticity of the printed matter 104 is determined, the reference value 11 is set, and the read / transmitted infrared transmission amounts 10a, 10b, and 10c are compared with the reference value 11 to determine the authenticity of the printed matter 104. be able to.

  Further, according to the present embodiment, not only when the printed matter 104 is conveyed in the first direction and measured by the magnetic sensor 13 and the infrared sensor 12, but also when the printed matter 104 is conveyed in the second direction. It is possible to measure. That is, since the magnetic impedance and the infrared transmission amount can be measured in two directions, excellent machine readability can be obtained without depending on the transport direction.

(5) Printed matter according to the fifth embodiment A printed matter 105 according to the fifth embodiment printed in the printing form 1 using the ink according to the ink form 2 as described below will be described.

1) Form of ink: 2
Two types of inks A and C having the following characteristics are used.
Ink A: has infrared transmission characteristics.
Contains a soft magnetic material and a semi-hard magnetic material, and has both magnetic properties.
Ink C: has infrared absorption characteristics.
Contains a soft magnetic material and has soft magnetism.

2) Printing form: 1
As shown in FIGS. 12 (a) and 13 (a), the region 105A is formed by printing the left half of the design using ink A only on one surface of the substrate to form ink C. The right half of the pattern is printed using to form the region 105C.

  As shown in FIG. 12B, when the printed product 105 is conveyed in the first direction and the magnetic impedance is measured by the magnetic sensor 13 as the magnetic characteristics, the highest magnetic impedance is obtained in the region 105A printed using the ink A. In the region 105C printed with the ink C, the magnetic impedance 6c smaller than the region 105A and higher than the magnetic impedance 6a of the region 8 where no ink is present is detected.

  When the authenticity of the printed matter 105 is determined, the reference value 7 is set, and the read / write magnetic impedances 6a, 6b, and 6c are compared with the reference value 7 to determine the authenticity of the printed matter 105. it can.

  As the infrared transmission / absorption characteristic, when the printed matter 105 is conveyed in the first direction and the infrared transmission amount is measured by the infrared sensor 12 as shown in FIG. 13B, in the region 105A printed using the ink A, The infrared transmission 10b, which is somewhat lower than the infrared transmission 10a in the region 8 where no ink is present due to the presence of the ink A, is measured. In the region 105C printed using the ink C, the infrared transmission amount 10c that is greatly reduced due to absorption of infrared rays is measured.

  When the authenticity of the printed matter 105 is determined, the reference value 11 is set, and the authenticity of the printed matter 105 is determined by comparing and comparing the read infrared transmission amounts 10a, 10b, and 10c with the reference value 11. be able to.

(6) Printed matter according to the sixth embodiment A printed matter 106 according to the sixth embodiment, which is printed in the above-described printing form 2 using the ink according to the above-described ink form 2, will be described.

2) Printing form: 2
As shown in FIGS. 14 (a) and 15 (a), a region 106A1 is formed on one surface of the base material by printing the left half of the design using ink A to form ink C. Using this, the right half of the design is printed to form the region 106C1. On the other surface of the base material, the ink A is used to print the left half of the pattern with the same area at the corresponding position on the back side of the region 106A1 to form the region 106A2, and the ink C is used to form the region 106C1. A region 106C2 is formed by printing the right half of the symbol in the same area at the corresponding position on the back side of the pattern.

  When the printed matter 106 is conveyed in the first direction and the magnetic impedance is measured by the magnetic sensor 13 as shown in FIG. 14B, the magnetic properties are highest in the areas 106A1 and 106A2 printed using the ink A. The impedance 6b is detected, and in the areas 106C1 and 106C2 printed using the ink C, the magnetic impedance 6c that is a half of the magnetic impedance 6b is detected.

  When determining the authenticity of the printed matter 106, it is possible to determine the authenticity of the printed matter 106 by setting the reference value 7 and comparing the read magnetic impedances 6a, 6b, 6c with the reference value 7. it can.

  As the infrared transmission / absorption characteristic, when the printed matter 106 is conveyed in the first direction and the infrared transmission amount is measured by the infrared sensor 12 as shown in FIG. 15B, the area 106A1 printed with the ink A and In 106A2, due to the presence of the ink A, the infrared transmission amount 10b which is reduced to some extent from the infrared transmission amount 10a in the region 8 where no ink is present is measured. In the areas 106C1 and 106C2 printed using the ink C, the infrared transmission amount 10c, which is greatly reduced due to absorption of infrared rays, is measured.

  When the authenticity of the printed matter 106 is determined, the reference value 11 is set, and the read infrared transmission amounts 10a, 10b, and 10c are compared with the reference value 11 to determine the authenticity of the printed matter 106. be able to.

(7) Printed matter according to the seventh embodiment A printed matter 107 according to the seventh embodiment printed using the ink according to the above-described ink form 2 and printed according to the above-described print form 3 will be described.

2) Printing form: 3
As shown in FIGS. 16 (a) and 17 (a), a region 107A1 is formed on one surface of the base material by printing the left half of the design using ink A to form ink C. Using this, the right half of the design is printed to form the region 107C1. On the other surface of the substrate, the left half in the figure of the pattern is printed with a larger area than the area 107A1 at a corresponding position on the back side of the area 107A1 using the ink A to form the area 107A2. Is printed at the corresponding position on the back side of the region 107C1 with a larger area than the region 107C1 to form the region 107C2.

  When the printed matter 107 is conveyed in the first direction and the magnetic impedance is measured by the magnetic sensor 13 as shown in FIG. 16B, only the region 107A2 is printed out using the ink A. In the existing region, the magnetic impedance 6b having a predetermined value is detected. In a region where the region 107A1 and the region 107A2 are overlapped, a magnetic impedance 6c that is twice the magnetic impedance 6b is detected. Of the areas printed using ink C, in areas where the areas 107C1 and 103C2 overlap, a lower magnetic impedance 6d is detected than in areas where only the area 107A2 exists, and areas 107C2 only exist In this case, a magnetic impedance 6e that is lower than the area where the area 107C1 and the area 103C2 exist but higher than the magnetic impedance 6 of the area 8 where no ink exists is detected.

  When the authenticity of the printed matter 107 is determined, the reference value 7 is set, and the read magnetic impedances 6a, 6b, 6c, 6d, and 6e are compared with the reference value 7 to check the authenticity of the printed matter 107. Can be determined.

  As the infrared transmission / absorption characteristics, when the printed matter 107 is conveyed in the first direction and the infrared transmission amount is measured by the infrared sensor 12 as shown in FIG. In the region where only the region 107A2 exists, the infrared transmission amount 10b which is lower to some extent than the infrared transmission amount 10a in the region 8 where no ink is present due to the presence of the ink A is measured. In the region where the regions 107A1 and 107A2 exist, the infrared transmission amount 10c which is reduced to twice the infrared transmission amount 10b due to the presence of the ink A is measured. Among the areas printed using ink C, the most reduced infrared transmission amount 10d is measured in the areas where the areas 107C1 and 107C2 exist. In the region where only the region 107C2 exists, the infrared transmission amount 10e that is the second largest drop is measured.

  When the authenticity of the printed material 107 is determined, the reference value 11 is set, and the infrared transmission amounts 10a, 10b, 10c, 10d, and 10e that are read are compared with the reference value 11 to verify the authenticity of the printed material 107. False can be determined.

(8) Printed matter according to the eighth embodiment A printed matter 108 according to the eighth embodiment, which is printed in the printing form 4 using the ink according to the ink form 2 described above, will be described.

2) Printing form: 4
As shown in FIG. 18 (a) and FIG. 19 (a), an area A1 is formed on one surface of the base material by printing a quarter of the upper left in the figure of the pattern using ink A. , Ink C is used to print the upper right quarter of the pattern to form the area 108C2. Furthermore, on the same one surface of the base material, the lower left quarter of the pattern is printed using ink C to form a region 108C1, and the lower right quarter of the pattern is printed using ink A. 1 is printed to form the area 108A2. Thus, the ink A region and the ink C region are arranged alternately along the first direction and the second direction.

  As a magnetic characteristic, when the printed matter 108 is conveyed in the first direction as shown in FIG. 18B and the magnetic impedance is measured by the magnetic sensor 13 along the first scanning line crossing the regions 108A1 and 108C2, A magnetic impedance 6b having a predetermined value is detected in a region where the region 108A1 exists, and in a region where the region 108C2 exists, a magnetic impedance 6c which is lower than the magnetic impedance 6b but higher than the magnetic impedance 6a in the region 8 where no ink exists. Measured. When the magnetic impedance is measured by the magnetic sensor 13 along the second scanning line that crosses the regions 108C1 and 108A2 in the printed matter 108 at a predetermined distance from the first scanning line, the left and right in FIG. Swap results are detected.

  When the authenticity of the printed material 108 is determined, it is possible to determine the authenticity of the printed material 108 by setting the reference value 7 and comparing and comparing the read magnetic impedances 6a, 6b, and 6c with the reference value 7. it can.

  As the infrared transmission / absorption characteristic, when the infrared sensor 12 is scanned in the horizontal direction in the drawing along the first scanning line crossing the areas 108A1 and 108C2 in the printed matter 108 as shown in FIG. In the area where ink A is present on one side, the amount of transmitted infrared light is reduced to some extent than in the area where no ink is present, and in the area where area 108C2 is present, the amount of transmitted infrared light is greatly reduced. When the infrared transmission amount is measured along the second scanning line that crosses the regions 108C1 and 108A2 in the printed matter 108 at a predetermined distance from the first scanning line, the left and right in FIG. 19B are switched. The result is detected.

  When the authenticity of the printed material 108 is determined, the reference value 11 is set, and the read infrared transmission amounts 10a, 10b, and 10c are compared with the reference value 11 to determine the authenticity of the printed material 108. be able to.

  Further, according to the present embodiment, not only when the printed material 108 is conveyed in the first direction and measured by the magnetic sensor 13 and the infrared sensor 12, but also when the printed material 108 is conveyed in the second direction. Since it is possible to measure, excellent machine readability can be obtained without depending on the transport direction.

(9) Printed matter according to the ninth embodiment A printed matter 109 according to the ninth embodiment printed in the printing form 1 using the ink according to the following ink form 3 will be described.

1) Form of ink: 3
Two types of inks A and D having the following characteristics are used.
Ink A: has infrared transmission characteristics.
Contains a soft magnetic material and a semi-hard magnetic material, and has both magnetic properties.
Ink D: has infrared absorption characteristics.
It contains only a semi-hard magnetic material and has a higher semi-hard magnetic property than ink A.

2) Printing form: 1
As shown in FIGS. 20 (a) and 21 (a), the region 109A is formed by printing the left half of the design using ink A only on one surface of the substrate, and ink D Is used to print the right half of the design to form the region 109D.

  When the printed matter 109 is conveyed in the first direction and the magnetic impedance is measured by the magnetic sensor 13 as shown in FIG. 20B as the magnetic characteristics, no ink exists in the region 109A printed using the ink A. A magnetic impedance 6b higher than the magnetic impedance 6a of the region 8 is detected. In the region 101B printed using the ink D, a magnetic impedance 6c higher than the magnetic impedance 6b is detected.

  When the authenticity of the printed material 109 is determined, it is possible to determine the authenticity of the printed material 109 by setting the reference value 7 and comparing and comparing the read magnetic impedances 6a, 6b, and 6c with the reference value 7. it can.

  As the infrared transmission / absorption characteristic, when the printed matter 109 is conveyed in the first direction and the infrared transmission amount is measured by the infrared sensor 12 as shown in FIG. 21B, in the region 109A printed using the ink A, The infrared transmission 10b, which is somewhat lower than the infrared transmission 10a in the region 8 where no ink is present due to the presence of the ink A, is measured. In the region 109D printed using the ink D, the greatly reduced infrared transmission amount 10c is measured.

  When the authenticity of the printed matter 109 is determined, the reference value 11 is set, and the read infrared transmission amounts 10a, 10b, and 10c are compared with the reference value 11 to determine the authenticity of the printed matter 109. be able to.

(10) Printed matter according to the tenth embodiment A printed matter 110 according to the tenth embodiment printed in the printing form 2 using the ink according to the ink form 3 described above will be described.

2) Printing form: 2
22 (a) and 23 (a), on the one surface of the substrate, the left half of the design is printed using ink A to form region 110A1, and ink D is formed. Using this, the right half of the design is printed to form the region 110D1. On the other surface of the substrate, the left half of the pattern is printed with the same area at the corresponding position on the back side of the region 110A1 using the ink A to form the region 110A2, and the region 110D1 using the ink D A region 110D2 is formed by printing the right half of the pattern with the same area at the corresponding position on the back side of the pattern.

  As the magnetic characteristics, when the printed material 110 is conveyed in the first direction and the magnetic impedance is measured by the magnetic sensor 13 as shown in FIG. 22B, in the regions 110A1 and 102A2 printed using the ink A, the ink A magnetic impedance 6b higher than the magnetic impedance 6a of the non-existing region 8 is detected. In the areas 110D1 and 110D2 printed using the ink D, the magnetic impedance 6c higher than those in the areas 110A1 and 102A2 is detected.

  When the authenticity of the printed material 110 is determined, it is possible to determine the authenticity of the printed material 110 by setting the reference value 7 and comparing the read magnetic impedances 6a, 6b, 6c with the reference value 7. it can.

  As the infrared transmission / absorption characteristics, when the printed material 110 is measured as shown in FIG. 23B and the infrared transmission amount is measured by the infrared sensor 12, the ink A is printed in the areas 110A1 and 110A2 printed using the ink A. Therefore, an infrared transmission amount 10c that is lower than the infrared transmission amount 10a in the region 8 where no ink is present is measured. In the areas 110D1 and 110D2 printed using the ink D, the infrared transmission amount 10c that is greatly reduced due to absorption of infrared rays is measured.

  When the authenticity of the printed material 110 is determined, the reference value 11 is set, and the read infrared transmission amounts 10a, 10b, and 10c are compared with the reference value 11 to determine the authenticity of the printed material 110. be able to.

(11) Printed matter according to the eleventh embodiment A printed matter 111 according to the eleventh embodiment, which is printed in the printing form 3 using the ink according to the ink form 3 described above, will be described.

2) Printing form: 3
As shown in FIGS. 24 (a) and 25 (a), on the one surface of the base material, the left half of the design is printed using ink A to form region 111A1, and ink D is applied. Using this, the right half of the design is printed to form the region 111D1. On the other surface of the base material, the left half in the figure of the pattern is printed with a larger area than the region 111A1 at a corresponding position on the back side of the region 111A1 using the ink A to form the region 111A2. Is used to print the right half of the symbol in the figure with a larger area than the region 111D1 at a corresponding position on the back side of the region 111D1 to form the region 111D2.

  As a magnetic property, when the printed product 111 is conveyed in the first direction as shown in FIG. 24B, the region where only the region 111 </ b> A <b> 2 is present among the regions printed using the ink A is a region where no ink exists. A magnetic impedance 6b higher than the magnetic impedance 6a of 8 is detected. In a region where the regions 111A1 and 111A2 exist so as to overlap, a magnetic impedance 6c that is twice as high as the magnetic impedance 6b is detected. Among the areas printed using the ink D, the highest magnetic impedance 6d, which is higher than the magnetic impedance 6c of the areas 111A1 and 111A2, is detected in the area where the areas 111D1 and 111D2 exist. In a region where only the region 111D2 exists, a magnetic impedance 6e that is one half of the magnetic impedance 6d of the region 111A1 and the region 111A2 and higher than the magnetic impedance 6b of only the region 111A2 is detected.

  When the authenticity of the printed material 111 is determined, the reference value 7 is set, and the read magnetic impedances 6a, 6b, 6c, 6d, and 6e are compared with the reference value 7 to check the authenticity of the printed material 111. Can be determined.

  As the infrared transmission / absorption characteristic, when the printed matter 111 is conveyed in the first direction and the infrared transmission amount is measured by the infrared sensor 12 as shown in FIG. In the region where only the region 111A2 exists, since the ink A exists on one side, the infrared transmission amount 10b which is lower to some extent than the infrared transmission amount 10a of the region 8 where no ink exists is measured. In the region where the regions 111A1 and 111A2 exist, the infrared transmission amount 10b which is reduced to twice the infrared transmission amount 10b due to the presence of the ink A is measured. Among the areas printed using ink D, the area where the areas 111D1 and 111D2 exist has the most reduced infrared transmission 10d, and the area where only the area 111D2 exists has the second largest decrease in infrared. A transmission amount 10e is measured.

  When the authenticity of the printed material 111 is determined, the reference value 11 is set, and the read infrared transmission amounts 10a, 10b, 10c, 10d, and 10e are compared with the reference value 11 to verify the authenticity of the printed material 111. False can be determined.

(12) Printed matter according to the twelfth embodiment A printed matter 112 according to the fourth embodiment printed in the printing form 4 using the ink according to the ink form 1 described above will be described.

2) Printing form: 4
As shown in FIGS. 26 (a) and 27 (a), an area 112A1 is formed on one surface of the base material by printing the upper left quarter of the design using ink A. The upper right quarter of the pattern is printed using ink D to form the region 112D2. Furthermore, on the same one surface of the base material, the lower left quarter of the pattern is printed using ink D to form the region 112D1, and the lower right quarter of the pattern is printed using ink A. 1 is printed to form the region 112A2. In this way, the ink A region and the ink D region are arranged alternately along the first direction and the second direction.

  As a magnetic characteristic, when the magnetic impedance is measured by the magnetic sensor 13 along the first scanning line crossing the regions 112A1 and 112D2 in the printed matter 112 as shown in FIG. 26B, in the region where the region 112A1 exists, A magnetic impedance 6b higher than the magnetic impedance 6a in the region 8 where no ink is present is detected. In a region where the region 112D2 exists, a magnetic impedance 6c higher than the magnetic impedance 6b is detected. When the magnetic impedance is measured by the magnetic sensor 13 along the second scanning line that crosses the regions 112D1 and 112A2 of the printed matter 112 at a predetermined distance from the first scanning line, the left and right in FIG. Swap results are detected.

  When the authenticity of the printed matter 112 is determined, it is possible to determine the authenticity of the printed matter 112 by setting the reference value 7 and comparing and comparing the read magnetic impedances 6a, 6b, and 6c with the reference value 7. it can.

  As infrared transmission / absorption characteristics, as shown in FIG. 27 (b), the printed matter 112 is conveyed in the first direction, and infrared transmission is performed by the infrared sensor 12 along the first scanning line crossing the regions 112A1 and 112D2. When the amount is measured, in the region where the region 112A1 exists, due to the presence of the ink A on one side, the infrared transmission amount 10b which is reduced to some extent than the region 8 where no ink is present is measured. In the region where the region 112D2 exists, the greatly reduced infrared transmission amount 10c is measured. When the infrared transmission amount is measured by the infrared sensor 12 along the second scanning line that crosses the regions 112D1 and 112A2 in the printed matter 112 at a predetermined distance from the first scanning line, the infrared transmission amount in FIG. A result in which the left and right are interchanged is detected.

  When the authenticity of the printed matter 112 is determined, the reference value 11 is set, and the read / transmitted infrared transmission amounts 10a, 10b, and 10c are compared with the reference value 11 to determine the authenticity of the printed matter 112. be able to.

  Further, according to the present embodiment, not only when the printed matter 112 is conveyed in the first direction and measured by the magnetic sensor 13 and the infrared sensor 12, but also when the printed matter 112 is conveyed in the second direction. Since it is possible to measure, excellent machine readability can be obtained without depending on the transport direction.

(13) Printed matter according to the thirteenth embodiment A printed matter 113 according to the thirteenth embodiment printed in the printing form 1 using ink according to the following ink form 4 will be described.

1) Form of ink: 4
Two types of inks A and E having the following characteristics are used.
Ink A: has infrared transmission characteristics.
Contains a soft magnetic material and a semi-hard magnetic material, and has both magnetic properties.
Ink E: has infrared absorption characteristics.
It contains a soft magnetic material and a semi-hard magnetic material and has the same magnetic properties as ink A.

2) Printing form: 1
As shown in FIGS. 28 (a) and 29 (a), only on one surface of the substrate, the left half of the pattern in the figure is printed using ink A to form region 113A, and ink E Is used to print the right half of the design to form the region 113E.

  As the magnetic characteristics, when the printed product 113 is conveyed in the first direction and the magnetic impedance is measured by the magnetic sensor 13 as shown in FIG. 28B, no ink exists in the region 113A printed using the ink A. A magnetic impedance 6b higher than the magnetic impedance 6a of the region 8 is detected. In the region 113E printed using the ink E, the same magnetic impedance 6b as that in the region 113A is detected.

  When determining the authenticity of the printed material 113, it is possible to determine the authenticity of the printed material 113 by setting the reference value 7 and comparing and comparing the read magnetic impedances 6a and 6b with the reference value 7.

  As the infrared transmission / absorption characteristic, when the infrared sensor 12 is scanned in the horizontal direction in the drawing with respect to the printed material 113 as shown in FIG. 29B, in the region 113A printed using the ink A, the presence of the ink A is caused. The infrared transmission amount is reduced to some extent as compared with a region where no ink is present. In the region 113E printed using the ink E, the infrared ray is absorbed and the infrared transmission amount is significantly reduced.

  When the authenticity of the printed material 113 is determined, the reference value 11 is set, and the authenticity of the printed material 113 is determined by comparing and comparing the read infrared transmission amounts 10a, 10b, and 10c with the reference value 11. be able to.

(14) Printed matter according to the fourteenth embodiment A printed matter 114 according to the fourteenth embodiment printed using the ink according to the ink form 4 described above and printed in the print form 2 will be described.

2) Printing form: 2
As shown in FIG. 30 (a) and FIG. 31 (a), a region 114A1 is formed on one surface of the base material by printing the left half of the design using ink A to form ink E. Using this, the right half of the design is printed to form the region 114E1. On the other surface of the base material, a region 114A2 is formed by printing the left half of the pattern with the same area at a corresponding position on the back side of the region 114A1 using the ink A, and the region 114E1 using the ink E. A region 114E2 is formed by printing the right half of the pattern with the same area at the corresponding position on the back side of the pattern.

  As the magnetic characteristics, when the printed matter 114 is conveyed in the first direction and the magnetic impedance is measured by the magnetic sensor 13 as shown in FIG. 30B, the inks are printed in the regions 114A1 and 114A2 printed using the ink A. A magnetic impedance 6b higher than the magnetic impedance 6a of the non-existing region 8 is detected. In the regions 114E1 and 114E2 printed using the ink E, the same magnetic impedance 6b as the regions 114A1 and 114A2 is detected.

  When the authenticity of the printed material 114 is determined, it is possible to determine the authenticity of the printed material 114 by setting the reference value 7 and comparing the read magnetic impedances 6a and 6b with the reference value 7.

  As the infrared transmission / absorption characteristics, when the printed matter 114 is conveyed in the first direction and the infrared transmission amount is measured by the infrared sensor 12 as shown in FIG. 31B, the region 114A1 printed with the ink A and In 114A2, due to the presence of the ink A, the infrared transmission amount 10b which is lower to some extent than the infrared transmission amount 10a in the region 8 where no ink is present is measured. In the regions 114E1 and 114E2 printed using the ink E, the infrared transmission amount 10c that is greatly reduced due to absorption of infrared rays is measured.

  When the authenticity of the printed material 114 is determined, the reference value 11 is set, and the read / transmitted infrared transmission amounts 10a, 10b, and 10c are compared with the reference value 11 to determine the authenticity of the printed material 114. be able to.

(15) Printed matter according to the fifteenth embodiment A printed matter 115 according to the fifteenth embodiment printed using the ink according to the ink form 4 described above in the printing form 3 will be described.

2) Printing form: 3
As shown in FIGS. 32 (a) and 33 (a), a region 115A1 is formed on one surface of the base material by printing the left half of the design using ink A to form ink E. Using this, the right half of the pattern is printed to form the region 115E1. On the other surface of the substrate, the ink A is used to print the left half in the figure of the pattern with a larger area than the region 115A1 at a corresponding position on the back side of the region 115A1, thereby forming the region 115A2. Is used to print the right half of the symbol in the figure with an area larger than that of the region 115E1 at a corresponding position on the back side of the region 115E1 to form the region 115E2.

  When the magnetic sensor 13 is scanned with respect to the printed matter 115 in the left-right direction in the figure as shown in FIG. 32B as magnetic characteristics, in the area where only the area 115A2 exists among the areas printed using the ink A, A magnetic impedance higher than the magnetic impedance 6a of the region 8 where no ink is present is detected. In a region where the region 115A1 and the region 115A2 overlap each other, a magnetic impedance 6c that is twice as high as the magnetic impedance 6b is detected. Among the regions printed using the ink E, in the region where the region 115E1 and the region 115E2 exist, the same magnetic impedance 6c as the region 115A1 and the region 111A2 is detected. In the region where only the region 115E2 exists, the same magnetic impedance 6b as the region where only the region 115A2 exists is detected.

  When determining the authenticity of the printed matter 115, it is possible to determine the authenticity of the printed matter 115 by setting the reference value 7 and comparing the read magnetic impedances 6a and 6b with the reference value 7.

  As the infrared transmission / absorption characteristics, when the infrared sensor 12 is scanned in the horizontal direction in the drawing with respect to the printed matter 115 as shown in FIG. 33B, only the region 115A2 exists in the region printed with the ink A. In the area where the ink A is present, the infrared transmission amount 10b which is lower to some extent than the area 8 where no ink is present due to the presence of the ink A is measured. In the region where the regions 115A1 and 115A2 exist, the infrared transmission amount 10c which is reduced to twice the infrared transmission amount 10b due to the presence of the ink A is measured. Among the areas printed using the ink E, in the areas where the areas 115E1 and 115E2 exist, the infrared transmission amount 10d that is the most reduced is measured. In the region where only the region 115E2 exists, the infrared transmission amount 10e that is the second largest drop is measured.

When the authenticity of the printed matter 115 is determined, the reference value 11 is set, and the infrared transmission amounts 10a, 10b, 10c, 10d, and 10e that are read are compared with the reference value 11 to verify the authenticity of the printed matter 115. False can be determined.
(16) Printed matter according to the sixteenth embodiment A printed matter 116 according to the sixteenth embodiment printed in the printing form 4 using the ink according to the ink form 4 described above will be described.

2) Printing form: 4
As shown in FIG. 34 (a) and FIG. 35 (a), an area 116A1 is formed on one surface of the base material by printing the upper left quarter of the design using ink A. The region 116E2 is formed by printing the upper right quarter of the pattern using ink E. Furthermore, on the same one surface of the base material, the lower left quarter of the pattern is printed using ink E to form a region 116E1, and the lower right quarter of the pattern is printed using ink A. 1 is printed to form the region 116A2. In this manner, the ink A region and the ink E region are arranged alternately along the first direction and the second direction.

  As a magnetic characteristic, when the magnetic impedance is measured by the magnetic sensor 13 along the first scanning line crossing the regions 116A1 and 116E2 in the printed matter 116 as shown in FIG. 34B, in the region where the region 116A1 exists, A magnetic impedance 6b higher than the magnetic impedance 6a of the region 8 where no ink is present is detected, and in the region where the region 116E2 exists, the same magnetic impedance 6b as the region where the region 116A1 exists is detected. When the magnetic impedance is measured by the magnetic sensor 13 along the second scanning line that crosses the regions 116E1 and 116A2 of the printed matter 116 at a predetermined distance from the first scanning line, the left and right in FIG. Although they are interchanged, the same magnetic impedance 6b is detected as a result.

  When the authenticity of the printed material 116 is determined, it is possible to determine the authenticity of the printed material 116 by setting the reference value 7 and comparing the read magnetic impedances 6a and 6b with the reference value 7.

  As the infrared transmission / absorption characteristic, when the infrared transmission amount is measured by the infrared sensor 12 along the first scanning line crossing the regions 116A1 and 116E2 in the printed material 116 as shown in FIG. In the region where the ink exists, the infrared transmission amount 10b which is lower to some extent than the infrared transmission amount 10a in the region 8 where no ink exists due to the presence of the ink A is measured. In the region where the region 116E2 exists, the greatly reduced infrared transmission amount 10c is measured. When the infrared transmission amount is measured by the infrared sensor 12 along the second scanning line that crosses the regions 116E1 and 116A2 in the printed matter 116 at a predetermined distance from the first scanning line, the infrared transmission amount in FIG. A result in which the left and right are interchanged is detected.

  When the authenticity of the printed material 116 is determined, the reference value 11 is set, and the authenticity of the printed material 116 is determined by comparing and comparing the read infrared transmission amounts 10a, 10b, and 10c with the reference value 11. be able to.

  In addition, according to the present embodiment, not only when the printed matter 116 is conveyed in the first direction and measured by the magnetic sensor 13 and the infrared sensor 12, but also when the printed matter 116 is conveyed in the second direction. Since it is possible to measure, excellent machine readability can be obtained without depending on the transport direction.

  According to the magnetic ink according to the above-described embodiment, it is not easy to obtain, and according to the printed matter according to the above-described embodiment, forgery resistance can be improved by using this magnetic ink.

Also, unlike the first to sixteenth embodiments described above, a single pattern is printed by the above-described printing forms 1 to 4 using the following two types of inks F and G as the ink forms. An image can also be formed.
Ink F: has infrared transmission characteristics.
Does not contain magnetic material and does not have magnetism.
Ink G: has infrared absorption characteristics.
It has soft magnetic material and semi-hard magnetic material, and has both magnetic properties.

Moreover, the printed image of a pattern can also be formed by the above-mentioned printing forms 1-4 using the following two types of inks H and J as ink forms.
Ink H: has infrared transmission characteristics.
Contains a soft magnetic material and has soft magnetism.
Ink J: has infrared absorption characteristics.
It has soft magnetic material and semi-hard magnetic material, and has both magnetic properties.

  Although the embodiment of the present invention has been described above, this embodiment is presented as an example, and is not intended to limit the technical scope of the invention. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. This embodiment and its modifications are included in the technical scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1a, 101-116 Printed material 2 Base material 3 Forgery prevention printing area 4 Print image 4a 1st print image 4b 2nd print image 6a, 6b, 6c, 6d, 6e Magnetic impedance 7 Reference value 10a, 10b of magnetic impedance 10c, 10d, 10e Infrared transmission 11 Reference value of infrared transmission 12 Infrared sensor 13 Magnetic sensors A, B, C, D, E Ink

Claims (10)

Containing soft magnetic material and semi-hard magnetic material,
A magnetic ink characterized by having infrared transmission characteristics.   2. The magnetic ink according to claim 1, wherein the soft magnetic material is blended within a range of 9 wt% to 20 wt%, and the semi-hard magnetic material is blended within a range of 1 wt% to 10 wt%. . The soft magnetic material is nickel-based ferrite or magnesium-based ferrite,
The magnetic ink according to claim 1, wherein the semi-hard magnetic material is maghemite or barium ferrite containing iron oxide (Fe ₂ O ₃ ) as a main component. A first region printed using the magnetic ink according to any one of claims 1 to 3, and at least one of magnetic characteristics and infrared transmission characteristics is different from the magnetic ink. A second region printed using the ink of, on one surface of the substrate, or on one surface and the other surface,
The anti-counterfeit printed matter, wherein the first region and the second region have color matching properties under visible light. A first region printed using the magnetic ink according to any one of claims 1 to 3, and at least one of magnetic characteristics and infrared transmission characteristics is different from the magnetic ink. The first region formed on the one surface of the substrate, and on the other surface of the substrate. A third region printed using the magnetic ink at a position corresponding to the region and having the same or different area as the first region, and the second region formed on the one surface And a fourth region printed using the other ink in the same or different area as the second region,
The forgery-preventing printed matter, wherein the first region, the second region, the third region, and the fourth region have color matching properties under visible light. A first region printed using the magnetic ink according to any one of claims 1 to 3, and at least one of magnetic characteristics and infrared transmission characteristics is different from the magnetic ink. The second region printed using the ink of the first and second regions is disposed on one surface of the base material in the order of the first region and the second region along the first line in a predetermined direction. The second region and the first region are arranged in this order along the second line in the predetermined direction at a predetermined distance from the first line,
The anti-counterfeit printed matter, wherein the first region and the second region have color matching properties under visible light.   The forgery-preventing printed matter according to claim 4 or 6, wherein an ink film thickness of the first region and the second region is 5 to 50 µm.   The forgery-preventing printed matter according to claim 5, wherein an ink film thickness of the first region, the second region, the third region, and the fourth region is 5 to 50 µm.   The forgery prevention according to claim 4 or 6, wherein the first region and the second region are arranged so as to be adjacent along a long side or a short side direction of the base material. Printed matter. The first region and the second region are arranged so as to be adjacent along the long side or short side direction of the base material on one surface of the base material,
The third region and the fourth region are arranged so as to be adjacent to each other along the long side or short side direction of the base material on one surface of the base material. Item 6. An anti-counterfeit printed matter according to Item 5.

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