JP4572659B2 - Anti-counterfeit card and reading method thereof - Google Patents

Description

  The present invention can be added to prevent forgery of cards such as credit cards, cash cards, and membership cards, and can effectively prevent forgery by a copying machine or a scanner and can be manufactured at a low cost. The present invention relates to an anti-counterfeit card and a reading method thereof.

  In general, a magnetic card for magnetically writing authentication information and an IC card having a data memory function have a possibility of forgery or authentication information being stolen. Is socially required.

Patent documents are described below.
JP, 10-44650, A Conventionally, a data carrier is known as an authentication tag for the purpose of avoiding forgery or theft. This data carrier is a data carrier provided with a recognition information part as user-specific recognition information, and the recognition information part is made of a monochromatic thermoplastic resin pellet and a metal powder arranged at random. It is what was simultaneously molded by the extruder (for example, refer patent document 1).

  However, since such a conventional data carrier uses at-random metal powder, forgery and duplication are difficult, but the metal powder constituting the random pattern is directly read, so for example, a copy of identification information by a copying machine, etc. On the other hand, there is a risk that it cannot be avoided reliably.

  The present invention has been made in view of the above-described problems, and has responded to such a conventional request. In particular, the present invention reliably avoids forgery and duplication and enhances reliability and safety. In addition, an object is to provide a forgery prevention card that can be implemented at a lower cost.

  In order to achieve the above-mentioned object, that is, the invention according to claim 1, the opening provided at an arbitrary position penetrating the base sheet is filled with beads at random using a transparent resin as a binder, both front and back surfaces. A forgery-preventing card characterized in that a transparent oversheet is attached to the bead and the beads are visible.

  According to a second aspect of the present invention, in the forgery prevention card according to the first aspect, the beads emit a pigment that absorbs infrared rays, a pigment that emits infrared rays of different wavelengths, or visible light when irradiated with infrared rays. The light emitting pigment is characterized by being a single pigment or a mixture of a plurality of pigments.

  The invention according to claim 3 is the anti-counterfeit card according to claim 1, wherein the beads are mixed with one or more pigments that emit visible light or materials that absorb ultraviolet light when irradiated with ultraviolet rays. It is characterized by being made.

The invention according to claim 4 is the anti-counterfeit card according to claim 1, wherein the beads are
The bead according to claim 2 and the bead according to claim 3 are mixed in all or some combinations.

  According to a fifth aspect of the present invention, the forgery prevention card is characterized in that the forgery prevention card according to any one of the first to fourth aspects reads the position of a bead with an image sensor and performs authentication from the image of the image sensor. Is the reading method.

  The invention according to claim 6 is the method for reading a forgery-preventing card according to claim 5, wherein the light emitted from at least two light sources having different irradiation angles is used. The prevention card is irradiated alternately, the position of the beads is read by the image sensor in the forgery prevention card in the state where each light is irradiated, and authentication is performed by the image of the image sensor in the state where each light is irradiated. Features.

  According to a seventh aspect of the present invention, in the method for reading a forgery-preventing card according to the fifth aspect, any one of at least two light sources having different irradiation angles emits infrared light. In the anti-counterfeit card described in, the position of the bead that emits visible light, the position of the bead that emits infrared light, and the position of the bead that absorbs infrared light are read, and authentication is performed from the image of the image sensor under each condition. Features.

  The invention according to claim 8 is the method for reading a forgery prevention card according to claim 5, wherein any one of at least two light sources having different irradiation angles irradiates ultraviolet rays. In the forgery prevention card described above, the position of the bead that emits visible light and the position of the bead that absorbs ultraviolet light are read, and authentication is performed from the image of the image sensor under each condition.

  The invention according to claim 9 is characterized in that authentication of the card according to claim 4 is performed by combining the forgery prevention card reading method according to claim 7 and claim 8.

  According to a tenth aspect of the present invention, in the method for reading an anti-counterfeit card according to the fifth aspect, at least two image sensors having different shooting angles are used to prevent forgery. It is characterized in that the position of a card bead is read and authentication is performed from an image of each image sensor.

  The invention according to claim 11 is the method for reading a forgery-preventing card according to claim 5, wherein the card is irradiated with infrared rays by at least two image sensors having different shooting angles. In the anti-counterfeit card, the position of the bead that emits visible light, the position of the bead that emits infrared light, and the position of the bead that absorbs infrared light are read, and authentication is performed from the image of the image sensor under each condition. To do.

  According to a twelfth aspect of the present invention, in the method for reading a forgery-preventing card according to the fifth aspect, the card is irradiated with ultraviolet rays by at least two image sensors having different photographing angles, and the card according to the third aspect. In the forgery prevention card described above, the position of the bead that emits visible light and the position of the bead that absorbs ultraviolet light are read, and authentication is performed from the image of the image sensor under each condition.

  The invention described in claim 13 is characterized in that the authentication of the card according to claim 4 is performed by combining the method for reading a forgery-preventing card according to claims 11 and 12.

  The anti-counterfeit card of the present invention is formed by embedding a random mixture of transparent resin and beads in a part of a card base, and formed so that the beads can be visually recognized. At least two light sources having different angles or The image sensor can three-dimensionally capture the position of the beads randomly arranged in the bead viewing portion, and can determine the authenticity from the image of the image sensor.

  The anti-counterfeit card having this configuration is a magnetic card or IC in which magnetic data or IC memory data is stolen like a magnetic card or IC card and a large amount of this data is prepared in advance as in the conventional method of manufacturing a counterfeit card. The method of writing data on a card and producing a counterfeit card cannot produce a counterfeit card, so it is very effective for preventing forgery, particularly for theft of data.

  Furthermore, a pigment that absorbs infrared rays by irradiating a part of the beads with infrared rays, a pigment that emits infrared rays of different wavelengths, or a pigment that emits visible light or a pigment that emits visible light by irradiating ultraviolet rays. Alternatively, a further anti-counterfeiting effect can be expected by kneading or coating a pigment that absorbs ultraviolet rays into the beads and reading the beads.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view showing an example of an anti-counterfeit card according to the present invention, and FIG. 2 is a cross-sectional view of the anti-counterfeit card of FIG. Moreover, FIGS. 3-5 is a top view which shows one Example of the forgery prevention card | curd of this invention. Further, FIGS. 6 to 11 are schematic views showing a method for reading a forgery prevention card of the present invention. FIG. 12 is a schematic view showing a method for reading an anti-counterfeit card and a method for judging authenticity according to the present invention.

  In the forgery prevention card 1 shown in FIGS. 1 and 2, a part of the card base 11 is opened and a transparent window portion 12 is formed. The transparent window portion 12 is filled with randomly arranged beads 13 and a transparent resin, and the card substrate 11 is laminated with an oversheet 14. The arrangement of the beads 13 provided in the transparent window portion 12 differs depending on the individual forgery prevention card 1. Further, the beads 13 are fixed at an arbitrary position in the thickness of the card substrate 11 with a transparent resin.

  The anti-counterfeit card 2 in FIG. 3 has the same configuration as the anti-counterfeit card 1 shown in FIGS. 1 and 2, and a bead 24 in which an infrared absorbing pigment is kneaded in addition to the bead 23 in the transparent window portion 22, Beads 25 kneaded with infrared visible fluorescent pigment and beads 26 kneaded with infrared infrared fluorescent pigment are mixed at random. The anti-counterfeit card 3 in FIG. 4 has the same configuration as the anti-counterfeit card 1 shown in FIGS. 1 and 2, and beads in which an ultraviolet fluorescent pigment is kneaded in addition to the beads 33 in the transparent window portion 32. 37 and beads 38 kneaded with an ultraviolet absorber are randomly mixed. Further, the anti-counterfeit card 4 in FIG. 5 has the same configuration as the anti-counterfeit card 1 shown in FIGS. 1 and 2, and a bead in which an infrared absorbing pigment is kneaded in addition to the bead 43 in the transparent window portion 42. 44, a bead 45 kneaded with an infrared visible fluorescent pigment, a bead 46 kneaded with an infrared infrared fluorescent pigment, a bead 47 kneaded with an ultraviolet fluorescent pigment, and a bead kneaded with an ultraviolet absorber 48 is mixed at random.

  FIG. 6 is a schematic diagram illustrating a method for reading the forgery prevention card 1 of FIG. 1, and a light source (visible light) 51 is irradiated on the transparent window portion 12 of the forgery prevention card 1 so that the transparent window of the forgery prevention card 1 is displayed. The image sensor 53 of the transparent window 12 is captured by the image sensor 53 through the portion 12. The authenticity determination is performed by comparing the position of the bead image 57 displayed in the image sensor image 55 with the bead arrangement of the transparent window portion 12 of the forgery prevention card 1 recorded in advance.

  FIG. 7 is a schematic view showing the reading method of the forgery prevention card 1 of FIG. 1 as in FIG. 6, but light sources (visible light) 61 and 62 having different irradiation angles are provided. By shifting the irradiation time of 61 and 62, two types of image sensor images 65 and 66 are taken into the image sensor 63. Thereby, the bead arrangement of the transparent window part 12 of the forgery prevention card 1 can perform authenticity determination more three-dimensionally.

  FIG. 8 is a schematic diagram showing a method for reading the forgery prevention card 2 of FIG. 3, and is the same as the configuration of FIG. 7 except that a light source (infrared light) 72 is provided. It is that you are. The image captured by the image sensor 73 by irradiating the light source (infrared light) 72 in addition to the visible light source (visible light) 71 on the transparent window portion of the forgery prevention card 2 is the same image as FIG. It is possible to obtain an image sensor image 76 in which the state of the beads is changed by irradiating the sensor image 75 and infrared light. The image sensor image 76 includes beads 24 in which an infrared absorbing pigment mixed in the transparent window portion 22 of the forgery prevention card 2 is kneaded, beads 25 in which an infrared visible fluorescent pigment is kneaded, and infrared infrared. By the beads 26 kneaded with the fluorescent pigment, a light-emitting bead image 79 and a light-absorbing bead image 80 can be observed.

  FIG. 9 is a schematic diagram showing a method for reading the forgery prevention card 4 of FIG. 5, in which a light source (ultraviolet light) 91 is provided in addition to the configuration of FIG. 8. An image captured by the image sensor 93 by alternately irradiating an infrared light source (infrared light) 92 and an ultraviolet light source (ultraviolet light) 91 onto the transparent window portion of the forgery prevention card 3 is shown in FIG. Similarly, an image sensor image 116 in which the bead state is changed by irradiating infrared light and an image sensor image 115 in which the bead state is changed by irradiating ultraviolet light can be obtained. The image sensor image 116 includes beads 44 in which an infrared absorbing pigment mixed in the transparent window portion 42 of the forgery prevention card 4 is kneaded, beads 45 in which an infrared visible fluorescent pigment is kneaded, and infrared infrared. The bead image 120 and the light-absorbing bead image 119 can be observed by the beads 46 kneaded with the fluorescent pigment. Further, the image sensor image 115 emits light by the beads 46 kneaded with the ultraviolet fluorescent pigment mixed in the transparent window portion 42 of the forgery prevention card 4 and the beads 48 kneaded with the ultraviolet absorber. A bead image 118 and a light-absorbing bead image 117 can be observed.

  FIG. 10 is a schematic diagram showing a method for reading the forgery prevention card 1 of FIG. 1, and the transparent window portion 12 of the forgery prevention card 1 is irradiated with a light source (visible light) 101 on the transparent window portion 12 of the forgery prevention card 1. The image sensor images 105 and 106 are captured by the image sensors 103 and 104 that transmit the image 12 and have different shooting angles. The authenticity determination is performed by comparing the positions of the bead images 107 and 108 displayed in the image sensor images 105 and 106 with the images recorded in advance.

  FIG. 11 is the same as the configuration of FIG. 10, but by providing a light source (infrared light) 111 that irradiates infrared light, beads that react with infrared light can be characteristically captured. Furthermore, by providing the optical filter 121 in front of the image sensor 114, the beads 45 kneaded with the infrared visible fluorescent pigment and the beads 46 kneaded with the infrared infrared fluorescent pigment in the forgery prevention card 4 can be discriminated. It becomes like this. Specifically, the optical filter 121 is a filter that cuts the visible light range, and only the beads 46 in which the infrared and infrared fluorescent pigments are kneaded can be a bead image that emits light in the image sensor image.

FIG. 12 is a schematic view showing an embodiment of the method for determining the authenticity of the anti-counterfeit card 1 of FIG. 10, by irradiating a light source (visible light) from the back surface of the anti-counterfeit card 4 toward the transparent window 12. The image sensor images 105 and 106 are taken into the image sensors 103 and 104 having different shooting angles. The authenticity determination is performed by the data processing unit 131, and the image sensor images 105 and 10 are processed.
6 is synthesized 132 and encrypted and coded 133, and whether or not the code matches the code recorded in advance in the database 134 is determined. If it matches, the next processing 136 is performed. 137 is performed.

  The card base material 11, 21, 31, 41 is not particularly limited as long as it is a sheet in the range of 0.05 to 1.0 mm. However, in consideration of cutting and embossability such as a card, a plastic sheet In the case of the above card, a transparent plastic of about 0.5 mm, such as vinyl chloride (PVC), polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polystyrene (PS) or ABS sheet, etc. In particular, vinyl chloride has been increased due to suitability for embossing. In recent years, the above resins including amorphous PET have been devised and used due to environmental problems during incineration.

  The transparent window portions 12, 22, 32, and 42 provided in portions where the card base materials 11, 21, 31, and 41 are partially hollowed are filled with a resin containing beads mixed with a transparent resin and beads. It is adjusted to be the same thickness as the card substrate. The transparent resin used here is not particularly limited as long as it has a refractive index different from that of the beads, but has the same composition as the card substrate, for example, a vinyl acetate resin, a polyester resin, an olefin resin. A resin or the like, an acrylic resin, an epoxy resin, or the like is preferable.

  The beads 13, 23, 33, and 43 are not particularly limited as long as the beads 13, 23, 33, and 43 have a size that can be put into a forgery prevention card, that is, a size that is equal to or less than the thickness of the card base material. There is.

  The beads 24 and 44 kneaded with an infrared absorbing pigment are kneaded with a pigment that absorbs infrared rays in the beads. Moreover, what coated the pigment which absorbs infrared rays on the bead surface may be used.

  The beads 25 and 45 kneaded with infrared visible fluorescent pigments are kneaded with pigments that emit light in the visible light region when irradiated with infrared laser light in the beads. Similarly to the above, the bead surface may be coated with the infrared visible fluorescent pigment.

  The beads 26 and 46 kneaded with the infrared infrared fluorescent pigment are kneaded with a pigment that emits light at a longer wavelength side than the irradiated infrared wavelength when irradiated with the infrared laser light in the beads. is there. Similarly to the above, the bead surface may be coated with the infrared and infrared fluorescent pigment.

  The beads 37 and 47 kneaded with an ultraviolet fluorescent pigment are kneaded with a pigment that emits light in the visible light region when irradiated with ultraviolet light. As in the previous period, the bead surface may be coated with the ultraviolet light pigment.

  The beads 38 and 48 kneaded with an ultraviolet absorber are kneaded with a material that absorbs ultraviolet light. Similarly to the above, the bead surface may be coated with the ultraviolet absorber.

  The present invention will be described in detail with reference to specific examples.

A portion of a 0.54 mm thick white PVC base material is cut into a size of 20 mm wide and 15 mm high, and a 0.1 mm thick transparent PVC oversheet is borrowed under the white PVC base material, Filled with hollow glass material with 0.1-0.5mm diameter glass beads mixed with epoxy resin, 0.1mm thick transparent PVC oversheet is placed on top of it, and the card surface is magnetically A striped tape was applied, lamination was performed by a hot press method, and the card was cut to a size to obtain a forgery-preventing card.

  The forgery prevention card was read with a scanner to produce a forgery card. When the determination was made with the reader shown in FIG. 12, it was determined to be a forgery card because it did not match the genuine note.

  A portion of a 0.54 mm thick white PVC base material is cut into a size of 20 mm wide and 15 mm high, and a 0.1 mm thick transparent PVC oversheet is borrowed under the white PVC base material, Glass beads with a diameter of 0.1 to 0.5 mm, beads with an infrared absorbing pigment, beads with an infrared visible fluorescent pigment, and infrared infrared fluorescent pigments are kneaded into the hollowed out material. Filled with a mixture of beads mixed with epoxy resin, a 0.1mm thick transparent PVC oversheet is overlaid, magnetic stripe tape is applied to the card surface, lamination is performed by the hot press method, I obtained a card to prevent forgery.

  The counterfeit prevention card was read with a scanner to produce a counterfeit card. When the determination was made with the reader shown in FIG. 8, it was determined to be a counterfeit card because it did not match the genuine note.

It is a top view which shows one Example of the forgery prevention card | curd of this invention. It is sectional drawing in the XX line of the forgery prevention card | curd of FIG. It is a top view which shows one Example of the forgery prevention card | curd of this invention. It is a top view which shows one Example of the forgery prevention card | curd of this invention. It is a top view which shows one Example of the forgery prevention card | curd of this invention. It is the schematic which shows the reading method of the forgery prevention card | curd of FIG. It is the schematic which shows the reading method of the forgery prevention card | curd of FIG. It is the schematic which shows the reading method of the forgery prevention card | curd of FIG. It is the schematic which shows the reading method of the forgery prevention card | curd of FIG. It is the schematic which shows the reading method of the forgery prevention card | curd of FIG. It is the schematic which shows the reading method of the forgery prevention card | curd of FIG. It is the schematic which shows the authenticity determination method of the forgery prevention card | curd of FIG.

Explanation of symbols

1, 2, 3, 4 ... Anti-counterfeit card 11, 21, 31, 41 ... Card substrate 12, 22, 32, 42 ... Transparent window 13, 23, 33, 43 ... Bead 14 ... Oversheets 24, 44 ... Beads 25, 45 ... Infrared fluorescent pigments kneaded with infrared visible fluorescent pigments Beads 37, 47 ... in which ultraviolet fluorescent pigments are kneaded Beads 38, 48 ... beads 51, 61, 62, 71, 101 ... in which UV absorbers are kneaded visible light)
72, 92, 111 ... Light source (infrared light)
91 ... Light source (ultraviolet light)
53, 63, 73, 93, 103, 104, 113, 114... Image sensors 55, 65, 66, 75, 76, 95, 96, 105, 106, 115, 116... Image sensor images 57, 67 , 68, 77, 78, 107, 108 ... Bead images 79, 97, 99, 118, 120 ... Light emitting bead images 80, 98, 100, 117, 119 ... Absorbing beads Image 121 ... Optical filter 131 ... Data processing unit

Claims (13)

  The opening provided at an arbitrary position penetrating the base material sheet is filled with beads transparently using a transparent resin as a binder, and transparent oversheets are attached to both front and back surfaces, and the beads are visible. Anti-counterfeit card as a feature.   The bead is characterized in that a pigment that absorbs infrared rays, a pigment that emits infrared rays of different wavelengths, or a pigment that emits visible light by irradiating infrared rays is singly or plurally mixed. Item 14. An anti-counterfeit card according to item 1.   2. The forgery prevention card according to claim 1, wherein the beads are made of a pigment that emits visible light when irradiated with ultraviolet rays, or a material that absorbs ultraviolet rays, either singly or in combination.   The anti-counterfeit card according to claim 1, wherein the beads are a mixture of the beads according to claim 2 and the beads according to claim 3 in all or some combination.   A method for reading a forgery prevention card, comprising: reading the position of a bead with the image sensor from the forgery prevention card according to any one of claims 1 to 4 and performing authentication from an image of the image sensor.   5. The anti-counterfeit card according to claim 1 is irradiated alternately with light emitted from at least two light sources having different irradiation angles, and the anti-counterfeit card in a state where each light is irradiated is image sensor. 6. The method for reading a forgery prevention card according to claim 5, wherein the position of the bead is read and authentication is performed by an image of an image sensor in a state where each light is irradiated.   The forgery prevention card according to claim 2, wherein at least one of at least two light sources having different irradiation angles emits infrared light. 6. The method of reading a forgery prevention card according to claim 5, wherein the position of the bead and the position of the bead that absorbs infrared rays are read and authentication is performed from an image of an image sensor under each condition.   The position of a bead that emits visible light and the position of a bead that absorbs ultraviolet light in the anti-counterfeit card according to claim 3, when any one of at least two light sources having different irradiation angles emits ultraviolet light. 6. The method of reading an anti-counterfeit card according to claim 5, wherein the authentication is performed based on the reading and the image of the image sensor under each condition.   A method for reading a forgery-preventing card, comprising performing authentication of the card according to claim 4 by combining the method for reading a forgery-preventing card according to claim 7 and claim 8.   The position of beads of the forgery prevention card according to any one of claims 1 to 4 is read by at least two image sensors having different shooting angles, and authentication is performed from images of the respective image sensors. Item 6. A method for reading a forgery prevention card according to Item 5. The position of a bead that emits visible light and the position of a bead that emits infrared light in the anti-counterfeit card according to claim 2 by irradiating the card with infrared light using at least two image sensors having different shooting angles. 6. The method of reading a forgery prevention card according to claim 5, wherein the position of a bead that absorbs infrared light is read and authentication is performed from an image of an image sensor under each condition.   The position of the bead that emits visible light and the position of the bead that absorbs ultraviolet light in the anti-counterfeit card according to claim 3 are obtained by irradiating the card with ultraviolet light using at least two image sensors having different shooting angles. 6. The method of reading an anti-counterfeit card according to claim 5, wherein the authentication is performed based on the reading and the image of the image sensor under each condition.   A method for reading an anti-counterfeit card, comprising: authenticating the card according to claim 4 by combining the anti-counterfeit card reading method according to claim 11.