JP2006068987A - Forgery preventing carrier and authenticating method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a forgery preventing carrier of a forgery preventing card, a tag for authentication or the like which surely avoids duplication by forgery and illegal use, in particular, and enhances reliability and safety and which can be manufactured at a reduced cost. <P>SOLUTION: The forgery preventing carrier having three or more layers of plane images formed in a transparent area, particularly the forgery preventing carrier having a constitution wherein transparent base sheets each having the plane image provided on one or both sides are laminated, or the forgery preventing carrier having the plane images formed of line images or dot images or a combination thereof, and an authenticating method of the forgery preventing carrier wherein the area wherein the plane image of the forgery preventing carrier exists is read as a read image by at least two image sensors different in a photographing angle and authentication is conducted on the basis of the read image of each image sensor, are obtained. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  INDUSTRIAL APPLICABILITY The present invention can be applied to anti-counterfeit carriers such as credit cards, cash cards, and other card media that require an anti-counterfeit effect, and can effectively prevent forgery by a copying machine or a scanner and is inexpensive. The present invention relates to an anti-counterfeit carrier such as an anti-counterfeit card, an authentication tag, and the like, and an authentication method performed by reading them.

  In general, a magnetic card for magnetically writing authentication information or an IC card having a data memory function has a risk of forgery or authentication information being stolen, and a technology for preventing forgery or theft is socially required.

  Conventionally, a data carrier is known as an authentication tag for the purpose of avoiding forgery or theft. This data carrier is provided with a recognition information portion as user-specific recognition information, and the recognition information portion is formed simultaneously with a single-color thermoplastic resin pellet and at-randomly arranged metal powder by an extruder. (See, for example, Patent Document 1).

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

The patent literature is as follows.
Japanese Patent Laid-Open No. 10-44650

  In order to solve the above-mentioned problems, the present invention has responded to such a conventional request, and in particular, avoids duplication by forgery and theft, thereby improving reliability and security, and lowering the reliability. An object is to provide an anti-counterfeit carrier such as an anti-counterfeit card and an authentication tag that can be manufactured at a low cost.

  The invention described in claim 1 made to achieve the above object is a forgery-preventing carrier characterized in that a flat image of three or more layers is formed in a transparent region.

  The invention according to claim 2 is the anti-counterfeit carrier according to claim 1, wherein a transparent base sheet having a flat image provided on one side or both sides is laminated.

  The invention according to claim 3 is the forgery-preventing carrier according to claim 1 or 2, wherein the planar image is formed by a line drawing, a point drawing, or a combination of a line drawing and a point drawing.

  The invention according to claim 4 is characterized in that at least one layer of the planar image is formed of only an infrared absorbing material and an infrared transmitting material or an infrared transmitting material. It is a forgery prevention card of description.

  The invention according to claim 5 is the forgery-preventing carrier according to any one of claims 1 to 4, wherein the carrier has a card shape.

  The invention according to claim 6 is the forgery-preventing carrier according to any one of claims 1 to 4, wherein the carrier has a tag shape.

  According to a seventh aspect of the present invention, an area having a planar image of the forgery prevention carrier according to any one of the first to sixth aspects is read as a read image by at least two image sensors having different shooting angles. An authentication method for an anti-counterfeit carrier characterized in that authentication is performed based on a read image of each image sensor.

  The invention according to claim 8 is the anti-counterfeit carrier according to claim 7, wherein one of the at least two image sensors having different photographing angles reads only an infrared region. This is the authentication method.

  The anti-counterfeiting carrier such as the anti-counterfeit card and the authentication tag of the present invention is formed so that a part or all of a plane image such as a line drawing or stipple of three or more layers of a transparent medium can be visually recognized. At least two image sensors with different angles read a plane image such as a line drawing or a stipple provided on three or more layers of the transparent portion as a reading image, and authenticity is determined from the reading image of the image sensor. .

  The anti-counterfeiting carrier such as the anti-counterfeit card and the authentication tag of this configuration is to steal the magnetic data of the magnetic card or the IC card or the memory data of the IC as in the conventional manufacturing method of the forgery card, Since the method for manufacturing a counterfeit card by writing data on the magnetic card or IC card manufactured in the above becomes impossible, it is effective for preventing counterfeiting, particularly for data theft.

  Further, by forming a part of a planar image such as a random image with an infrared transmitting material so that one of the two image sensors can read the infrared image at the time of reading, the forgery prevention effect is further enhanced.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a plan view showing an embodiment in which the present invention is an anti-counterfeit card, and FIG. 2 is a cross-sectional view of the anti-counterfeit card in FIG. FIG. 3 is a schematic diagram showing a method for reading the forgery prevention card of FIG. 1, and FIG. 4 is a schematic diagram showing a true / false determination method by the reading method of FIG.

  5 is a plan view showing one embodiment of the forgery prevention medium of the present invention, and FIG. 6 is a cross-sectional view taken along line YY of the forgery prevention medium of FIG. 7 is a schematic diagram showing a method for reading the forgery prevention card of FIG. 5, and FIG. 8 is a schematic diagram showing a true / false determination method by the reading method of FIG.

The anti-counterfeit card 1 shown in FIG. 1 and FIG. 2 includes transparent base materials 12 and 13 and overcoats 14 and 15, a surface random pattern 16 on the surface of the transparent base material 12, and a surface on the surface of the transparent base material 13. The random pattern 17 and the back surface random pattern 18 are provided on the back surface. The random patterns 16, 17, 18 are provided in the transparent window 11 of the forgery prevention card 1, and a part of the lower random patterns 17, 18 can be seen from the surface of the forgery prevention card 1. Is tilted, a part of the lower random patterns 17 and 18 hidden in the surface random pattern 16 can be seen.

  The anti-counterfeit card 3 shown in FIGS. 4 and 5 includes transparent base materials 32 and 33 and overcoats 34 and 35. The surface random pattern 36 is formed on the surface of the transparent base material 32, and the infrared light is formed on the surface of the transparent base material 33. A transmissive type random surface pattern 37 and a random back surface pattern 38 are provided on the rear surface. The random patterns 36, 37, and 38 are provided on the transparent window 31 of the forgery prevention card 3, and in a normal state, a part of the lower layer random patterns 37 and 38 can be seen from the surface of the forgery prevention card 3. When the forgery prevention card 3 is tilted, a part of the lower random patterns 37 and 38 hidden in the surface random pattern 36 can be seen. Further, when the anti-counterfeit card 3 is viewed in the infrared region, only the random pattern 36 and the random pattern 38 can be confirmed.

  FIG. 3 is a schematic diagram illustrating a reading method of the forgery prevention card 1 of FIG. 1, and the image sensor A 19 and images having different shooting angles are irradiated from the back surface of the forgery prevention card 1 toward the transparent window 11. Images projected from the transparent window portion 11 are taken into the sensor B20. The authenticity determination is performed by the data processing unit 30, and the image 22 photographed by the image sensor A19 and the image 23 photographed by the image sensor B20 are synthesized 24, encrypted and coded 25, and recorded in the database 26 in advance. As shown in FIG. 4, a true / false determination 27 is performed as to whether or not the current code matches, and the next process 28 is performed if they match, and the exclusion 29 is performed if they do not match.

  FIG. 7 is a schematic diagram illustrating a method for reading the forgery prevention card 3 of FIG. 5, and the image sensor A 39 and the image having different shooting angles are irradiated by irradiating the light source 40 from the back surface of the forgery prevention card 3 toward the transparent window 31. Images projected from the transparent window portion 31 are taken into the sensor B40. However, since the image of the image sensor B39 is the image 43 projected through the visible light cut filter 42, the infrared transmission type random pattern 37 is not displayed on the image sensor B40. The authenticity determination is performed by the data processing unit 50 as shown in FIG. 8, and the image 52 photographed by the image sensor A39 and the image 53 photographed by the image sensor B40 are synthesized 44 to be encrypted and coded 45, and the database 46 Whether the code matches the code recorded in advance is determined. If the code matches, the next processing 48 is performed. If the code does not match, exclusion 49 is performed.

  1 and 5 can be used as an authentication tag by changing the shape of the card.

  The transparent base material 12, 13, 32, 33 is not particularly limited as long as it is a transparent sheet. For example, in consideration of cutting of a card or the like and embossability, a plastic sheet is suitable. Examples include vinyl (PVC), polyethylene terephthalate (PET), polyethylene (PE), polypropylene (PP), polystyrene (PS), and ABS sheets, and vinyl chloride is often used for embossing, etc. Due to problems and the like, the above-mentioned resins including amorphous PET are applied and used.

  The random patterns 16, 17, 18, 36, and 38 and the infrared transmission type random pattern 37 are provided by the respective printing methods using, for example, offset ink, gravure ink, screen ink, or the like. In particular, the ink pigment used in the random patterns 36 and 38 is composed of a pigment or dye that absorbs infrared rays, and the infrared transmission type random pattern 37 is composed of a pigment or dye that transmits infrared rays.

  Further, as the pigment of the ink used for the random patterns 36 and 38, it is possible to use a pigment or dye that transmits light in the visible light region and absorbs light in the infrared region.

  The invention is illustrated in detail with specific examples.

  Random pattern line drawings were printed by the offset printing method using process black ink on the front and back of a transparent PVC base material having a thickness of 0.27 mm. At the same time, the pattern was printed on the reverse side by the offset printing method. Further, a random pattern line drawing was printed on the surface of another transparent vinyl substrate having a thickness of 0.27 mm by using the process black ink by the offset printing method, and at the same time, the pattern was printed on the surface by the offset printing method. Overlay the above two PVC base materials, overlay the 0.1mm thick transparent PVC oversheet on the front and back, apply magnetic stripe tape on the card surface, laminate by hot press method, pull out to the size of the card and forge Got a prevention 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. 3, it was determined to be a forgery card because it did not match the genuine code.

  Random pattern line drawing is printed on the surface of 0.27mm thick transparent PVC base material by offset printing method using infrared transmission type black ink, and the random pattern is printed on the back side by offset printing method using process black ink. Printed. At the same time, the pattern was printed on the reverse side by the offset printing method. Further, a random pattern line drawing was printed on the surface of another transparent vinyl substrate having a thickness of 0.27 mm by using the process black ink by the offset printing method, and at the same time, the pattern was printed on the surface by the offset printing method. Overlay the above two PVC base materials, overlay the 0.1mm thick transparent PVC oversheet on the front and back, apply magnetic stripe tape on the card surface, laminate by hot press method, pull out to the size of the card and forge Got a prevention card.

  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. 7, it was determined to be a counterfeit card because it did not match the genuine code.

  INDUSTRIAL APPLICABILITY The present invention can be applied to anti-counterfeit carriers such as credit cards, cash cards, and other card media that require an anti-counterfeit effect, and can effectively prevent forgery by a copying machine or a scanner and is inexpensive. The present invention relates to an anti-counterfeit carrier such as an anti-counterfeit card, an authentication tag, and the like, and an authentication method performed by reading them.

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 the schematic which shows the reading method of the forgery prevention card | curd of FIG. FIG. 4 is a schematic diagram showing a true / false determination method by the reading method of FIG. It is a top view which shows one Example of the forgery prevention card | curd of this invention. It is sectional drawing in the YY line of the forgery prevention seal | sticker of FIG. It is the schematic which shows the reading method of the forgery prevention card | curd of FIG. FIG. 8 is a schematic diagram showing a true / false determination method by the reading method of FIG.

Explanation of symbols

1, 3 Anti-counterfeit card 11, 31 Transparent window part 12, 13 Transparent base material 32, 33 Transparent base material 14, 15 Overcoat 34, 35 Overcoat 16, 17, 18 Random pattern 36, 38 Random pattern 37 Infrared transmission type Random pattern 19, 39 Image sensor A
20, 40 Image sensor B
21, 41 Light source 42 Visible light cut filter 22, 52 Image 23 taken with image sensor A 53 Image 53 taken with image sensor B Data processing unit

Claims (8)

  An anti-counterfeit carrier characterized in that a flat image of three or more layers is formed in a transparent region.   The forgery-preventing carrier according to claim 1, wherein a transparent base sheet having a flat image provided on one side or both sides is laminated.   3. The forgery-preventing carrier according to claim 1, wherein the planar image is formed by a line drawing, a point drawing, or a combination of a line drawing and a point drawing.   The forgery prevention card according to any one of claims 1 to 3, wherein at least one layer of the planar image is formed of only an infrared absorbing material and an infrared transmitting material or an infrared transmitting material.   The forgery prevention carrier according to any one of claims 1 to 4, wherein the carrier has a card shape.   The forgery prevention carrier according to any one of claims 1 to 4, wherein the carrier has a tag shape.   An area having a planar image of the anti-counterfeit carrier according to any one of claims 1 to 6 is read as a read image by at least two image sensors having different shooting angles, and authentication is performed using the read image of each image sensor. An anti-counterfeiting carrier authentication method characterized by the above.   The authentication method for an anti-counterfeit carrier according to claim 7, wherein one of the at least two image sensors having different shooting angles reads only an infrared region.

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