JP2008062417A - Medium for preventing forgery and manufacturing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medium for preventing forgery which is used for securities such as a gift certificate, a check and a stock certificate, certificates such as an insurance policy and a receipt, and a ticket, an ID card, etc. and which is inexpensive, excellent in security properties and has a high degree of freedom of design, and to provide a manufacturing method thereof. <P>SOLUTION: The medium for preventing forgery has a constitution that a printed watermark image (2) formed by using ink for forming a watermark image and an electronic watermark image (5) formed by using ink for authenticity discrimination and having information in an electronic watermark form are printed on at least one side of a base (1). The manufacturing method of the medium for preventing forgery is based on any one of gravure printing, flexographic and offset printing methods. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to securities such as gift certificates, checks, stock certificates, certificates such as insurance certificates and receipts, tickets, ID cards, etc., and in particular, anti-counterfeit media for which anti-counterfeit measures are required and their manufacture It is about the method.

  Traditionally, forgery prevention media used for securities such as gift certificates, checks, stock certificates, certificates such as insurance certificates and receipts, tickets, ID cards, etc., have been previously watermarked or holograms At present, there are many relatively expensive media such as paper with a thread or the like, paper with a hologram foil transferred in a later process, or a card.

  For example, it is difficult to counterfeit as a method to prevent unauthorized use such as gift certificates, checks, stock certificates, etc., insurance documents, certificates such as receipts, falsification of tickets, etc. The above-mentioned watermark, hologram thread, hologram foil, etc. are formed to prevent unauthorized use by making it possible to determine authenticity by visual inspection. Further, in the case of an ID card or the like, it is legitimate based on the key information recorded in the stripe-shaped magnetic recording portion or the IC memory portion of the IC chip embedded in the ID card and the password entered by the user. For example, it is determined whether the user is a user to prevent unauthorized use.

  As shown in FIG. 3, the forgery prevention medium using the watermarked paper is watermarked (7) at the paper making stage. For example, there are a method of reducing the paper thickness of the portion to be the watermark (7) to make a white watermark, and a method of increasing the paper thickness to make a black watermark. FIG. 3A is a schematic diagram for producing white watermark paper by dandy roll, FIG. 3B is a schematic diagram showing a state in which irregularities are formed on the paper, and FIG. It is a schematic diagram showing a state in which the surface of the paper with the unevenness is pressed to form a watermark (7). As shown in FIG. 4, the anti-counterfeit medium (A) using the paper with the watermark (7) as shown in FIG. 4 requires a large-scale facility for this purpose, and can be easily imitated by ordinary people. Is difficult to counterfeit.

  Next, as shown in FIG. 5, the medium for preventing forgery using a paper in which a hologram thread is inserted is a hologram thread (8), that is, a thread having a hologram (or optical diffraction grating) pattern on the front surface or back surface of the thread. Thus, the sheet is formed of a portion where the thread (8) is exposed and a covering portion (9) which covers the thread (8) intermittently. An anti-counterfeit medium (A) in which such a hologram thread (8) is encased in a sheet has been proposed (for example, see Patent Document 1).

  The hologram layer (or may be an optical diffraction grating layer) provided on the base film is a resist resin in another step after a hologram forming layer such as an ultraviolet curable resin composition is applied on the base film. Hologram exposure is performed on the hologram mold plate patterned by etching, nickel hologram plating is performed, hologram hologram embossing is transferred onto the plated surface, and the hologram mold plate is pressed to replicate the hologram. The hologram-molded coating resin is cured by irradiating with ultraviolet rays. In a continuous process, the hologram type plate is formed in a roll shape.

In addition, as an ultraviolet curable resin composition, the composition etc. which added the sensitizer to what mixed the unsaturated ethylene monomer and the unsaturated ethylene oligomer suitably are used. Hologram layer formation can also be performed in processes other than photocuring. In this case, thermoplastic resins such as acrylic resin, polystyrene resin, and polycarbonate, and thermosetting resins such as melamine resin, epoxy resin, and urethane resin are also used. The The hologram layer itself is usually formed to a thickness of 5 μm or less. Since such a thread having a hologram pattern is difficult to duplicate, it can be said that the anti-counterfeit effect is higher.

  Next, as shown in FIG. 6, an anti-counterfeit medium (A) (see, for example, Patent Document 2) in which a hologram foil (10) is transferred onto a sheet (1) has been proposed.

  However, any of the methods using the anti-counterfeit medium (A) has a problem that the production cost is high, and it is necessary to determine a design in advance when manufacturing the anti-counterfeit medium (A). There is a problem that it is impossible to cope with a design unique to the creator or a sudden design change.

  On the other hand, based on the key information recorded in the stripe-shaped magnetic recording portion formed on the ID card or the IC memory portion of the IC chip embedded in the ID card, and the password entered by the user, the legitimate use In the case of a method for determining whether or not the person is an unauthorized person and using the ID card reader / writer, the information recorded in the magnetic recording part or the IC memory part can be easily read. It can also be easily duplicated. Thereby, the read information is analyzed and illegally used. In addition, a large number of forged ID cards can be created.

Prior art documents are shown below.
JP 2000-290896 A Japanese Patent Laid-Open No. 9-6218

  An object of the present invention is to solve such problems of the prior art, and to provide an anti-counterfeit medium that is inexpensive, excellent in security, and has a high degree of design freedom, and a method for manufacturing the same. .

  The present invention has been made to solve the above-mentioned problems, and the invention according to claim 1 of the present invention is formed by using watermark image forming ink on at least one side of the substrate (1). An anti-counterfeit medium characterized in that a printed watermark image (2) and an electronic watermark image (5) having information of an electronic watermark form formed using authenticity identification ink are printed.

  According to a second aspect of the present invention, a watermark image is formed on at least one side of the substrate (1) by a printing method of any one of a gravure printing method, a flexographic printing method, and an offset printing method. It is a manufacturing method of the medium for forgery prevention characterized by printing with the ink for printing.

  According to a third aspect of the present invention, there is provided a digital watermark image having information in a digital watermark form on at least one side of the substrate (1) by any one of a gravure printing method, a flexographic printing method, and an offset printing method. (5) is a method for producing an anti-counterfeit medium characterized by printing with authenticity identification ink.

The anti-counterfeit medium of the present invention is a digital watermark image having information on the form of a digital watermark formed using a watermark image-forming ink and a digital watermark image information formed on at least one surface of a substrate. Can be printed by any of the gravure printing method, flexo printing method, and offset printing method, thereby providing an anti-counterfeit medium that is inexpensive, excellent in security, and has a high degree of design freedom. it can.

  An embodiment of the present invention will be described in detail with reference to FIGS.

  FIG. 1 is a plan view showing one embodiment of a medium for preventing forgery according to the present invention, and FIG. 2 is a plan view showing another embodiment of the medium for preventing forgery according to the present invention.

  The case where the anti-counterfeit medium (A) of one embodiment according to the present invention is applied to, for example, a gift certificate shown in FIG. 1 will be described.

  Print watermark image (2) formed using watermark image forming ink on at least one side of substrate (1), and digital watermark image (5) having information on the form of digital watermark formed using authenticity identification ink And a forgery prevention medium (A) on which general print data such as characters and images are printed with normal printing ink.

  In the case of this gift certificate, the general print data includes a gift certificate title, a gift certificate issue number (4), and a department store name.

  Next, the print watermark image (2) using the certificate identification number 1 for authenticity identification is formed by any of the gravure printing method, flexographic printing method, and offset printing method. It is printed at an arbitrary position using a printing ink.

  The print watermark image (2) is not limited to the above-described issue number 1, and an appropriate shape pattern such as a figure, a symbol, a character, or a picture may be used. Moreover, it can provide in one place thru | or two or more places in multiple places of a base material (1) surface.

  The watermark image forming ink penetrates into the fiber of the base material (1), imparts transparency to the portion of the print watermark image (2), and between the portion without the print watermark image (2). A moderate translucency difference is created, thereby forming the print watermark image (2).

  Subsequently, the digital watermark format information for authenticity identification similarly uses the issue number 1 of the gift certificate and embeds it in the imprint (3) of the issuer, and any of gravure printing method, flexographic printing method, and offset printing method The digital watermark image (5) is formed by printing using the authenticity identifying ink by the printing method. The information of the digital watermark form for authenticity identification thus made cannot be identified with the naked eye.

  Here, the digital watermark will be described. The digital watermark is some information embedded and hidden in image data or the like. Some information is, for example, not only the issue number but also a coded department name, logo mark, and the like. Also, the digital watermark information may be embedded in the department store name instead of the issuer's seal (3).

  Digital watermarking can be used to protect digital works from unauthorized use (e.g., unauthorized copying) and is therefore an advanced technology. For this purpose, (1) it is extremely difficult to remove embedded information without deteriorating the copyrighted work. (2) It is extremely difficult to know the presence and location of embedded information in a copyrighted work. (3) A feature is required that the state of the original work is maintained even when the work has embedded information.

  In the present invention, the above feature (2) is mainly required. Furthermore, in the present invention, (4) even if embedded information is extracted, it is extremely difficult to decipher the embedded information. (5) A feature is required in which embedded information can be extracted from image data obtained by concealing embedded information in a printed image and reading the image. Many forms of digital watermarks are known. However, as long as they have such characteristics, the form of digital watermarks in the embedded information is not particularly limited in the present invention. A well-known digital watermark form can be applied as the embedded information form.

  In one embodiment according to the present invention, as described above, in addition to the print watermark image (2) formed using the watermark image forming ink on at least one side of the substrate (1), image data (issuer) It is preferable to print the digital watermark image (5) having the digital watermark form information in the area of (3) (3) with the authenticity identifying ink.

  As described above, the information of the digital watermark form existing in the area of the image data (3) can make it difficult to understand the part where the data itself exists. Since such a digital watermark image (5) is formed on a gift certificate, a gift certificate that is extremely difficult to counterfeit can be provided.

  The information in the digital watermark form is information of issue number 1 (4). In this way, the information of the issue number 1 (4) can be obtained from the information in the digital watermark form.

  As shown in FIG. 1, the information in the digital watermark form is issue number 1 (4). That is, a digital watermark image (5) in which information of a digital identification form for authenticity identification consisting of issue number 1 (4) is embedded in the area of image data (imprint of the issuer) (3) on the surface of the substrate (1). ) Is printed.

  Thus, the issue number 1 (4) is embedded as information in the form of digital watermark in the area of the image data (imprint of the issuer) (3), so that it is difficult to determine whether or not the digital watermark information itself exists. The part where the digital watermark information exists in the image can be made difficult to understand.

  In addition, when the gift certificate is forged by replacing the image data (issuer's seal) (3), the information of the issue number 1 (4) as the information of the digital watermark form is completely lost and the forgery is forged. Will remain. Thereby, a counterfeit gift certificate can be detected.

  That is, the entire gift certificate is read by a scanner to obtain image data of the entire gift certificate. In the image data, only the imprint portion of the issuer is trimmed to obtain image data of the issuer's imprint. The image data of the imprint of the issuer is processed in the digital watermark information detection system. Thereby, when digital watermark information is not detected, the gift certificate is a fake gift certificate.

  On the other hand, when the issue number 1 is detected, the detected issue number 1 is compared with the issue number 1 printed on the gift certificate. If the collation results match, the gift certificate is a true gift certificate. If they do not match, the gift certificate is a fake gift certificate.

  Since both the print watermark image (2) and the digital watermark image (5) are formed by any one of the gravure printing method, flexographic printing method, and offset printing method, relatively fine images and complicated images can be obtained. Because it can be put in, security can be improved. Further, by combining the print watermark image (2) and the digital watermark image (5) in this way, it is possible to further improve the forgery prevention effect.

  In addition, since both images (2, 5) are formed by the printing method, the price can be relatively low, and the anti-counterfeit medium (A ) Can be produced.

  In the gravure printing method, a copper plating is applied to the surface of an iron cylinder (cylinder) to form a base, a peeling layer is provided on the copper plating surface, and further copper plating is applied to make the surface mirror-like. A concave (cell) is created on the polished copper surface by engraving or corrosion, and gravure printing ink in the cell is transferred to the substrate surface. It is a method.

  Next, the flexographic printing method is a method in which a printing plate made of a photosensitive resin relief plate is used and printing is performed using a liquid and quick-drying flexographic ink.

  Next, the offset printing method is a method of printing using an offset ink using a plano-intaglio plate, a PS plate, or a waterless lithographic plate having an image portion lowered by about 3 μm.

  Next, materials used for manufacturing the forgery prevention medium (A) according to the present invention will be described in detail.

  First, as the base material (1), paper such as mitsumashi, cotton, manila hemp, flax and other securities, natural Japanese paper using wood pulp natural fibers, and wood pulp natural fibers are synthesized. Paper such as mixed Japanese paper using fibers and synthetic Japanese paper using only synthetic fibers has good print watermark suitability and can be preferably used. In addition, paper such as coated paper, art paper, and card paper using wood pulp-based natural fibers can be used, but generally there is a tendency for absorption of printing ink to be very small, compared to plastic base materials. Although somewhat preferred, it is somewhat unsuitable for printing watermarks.

  The thickness, hardness, color tone, etc. of the substrate (1) can be appropriately set according to the use, but there is a moderate difference in translucency by applying the watermark image forming ink to the surface of the paper. It is necessary that the base material (1) has an appropriate thickness and fiber density so that a print watermark image (2) is formed, and the thickness is not particularly limited. Moreover, although the color tone of a base material (1) is not specifically limited, For example, they are white tone, light color tone, light color tone, etc.

  Specifically, as an example, paper used for securities such as bonds, stock certificates, checks, gift certificates that need to be protected against counterfeiting, paper used for pages such as bankbooks, tickets, ID cards, etc. Other papers that require anti-counterfeiting.

  In the present invention, as the paper, it is possible to use a paper that does not provide a watermark image in the paper manufacturing process, or a paper that is appropriately provided with a watermark image. A pattern such as a colored pattern or a fine line pattern, an arabesque pattern, letters, numbers, or the like may be printed.

As the watermark image forming ink, for example, printing ink mainly composed of boil oil, thermosetting resin such as urethane resin, epoxy resin, polyester resin, or ultraviolet curable type polymerized and cured by ultraviolet rays It is possible to use printing inks that use a resin or a resin mainly composed of a thermoplastic resin such as polyvinyl chloride, polyvinyl chloride-vinyl acetate copolymer, acrylic resin, or cellulose resin as an ink binder or ink vehicle. In addition, a resin composition mainly composed of a cationic polymerization initiator such as p-nitrobenzenediazonium hexafluorophosphate and an epoxy resin such as bisphenol A-epichlorohydrin type epoxy resin, novolak type epoxy resin, alicyclic epoxy resin, and the like Depending on the reactive diluent, organic solvent It can be used volatile plasticizer, or a non-volatile non-reactive diluent by ultraviolet irradiation or the like is added an epoxy resin composition capable of cationic polymerization as printing inks.

  Next, as an authentication ink for printing information in the form of a digital watermark, for example, a dropout that cannot be read by reading with a normal white light scanner but can be read by reading with a single color light according to the color. Color inks and stealth inks with different excitation wavelengths that are difficult to see (for example, a plurality of infrared stealth inks that are excited by infrared rays having different wavelengths and emit infrared rays having the same wavelength as the infrared rays, And a plurality of ultraviolet stealth inks each emitting ultraviolet rays having the same wavelength, or a combination of the infrared stealth ink and the ultraviolet stealth ink).

  As described above, the print watermark image (2) formed using the watermark image forming ink on at least one side of the base material (1) and the image data (printed by the issuer) (3) ) Is printed with an electronic watermark image (5) having information in the form of an electronic watermark, so that an anti-counterfeit medium (A) that is inexpensive, excellent in security, and has a high degree of design freedom is obtained. It is something that can be done.

  The anti-counterfeit medium (A) of another embodiment according to the present invention is, for example, as shown in FIG. 2, on at least one side of the base material (1) of the ID card having a tape-like magnetic layer (M). A digital watermark image (13) having information in the form of a digital watermark in the area of image data (face photograph) (11) using a printing watermark image (2) formed using a watermark image forming ink and authenticity identification ink. ), And forgery prevention medium (A) in which ID number (12) and owner name (14) are printed with ordinary printing ink as general print data.

  Since both the print watermark image (2) and the digital watermark image (13) are formed by the above-described printing method, a relatively fine image or a complicated image can also be inserted, so that security can be improved. Further, by combining the print watermark image (2) and the digital watermark image (13) in this way, it is possible to further improve the forgery prevention effect.

  As described above, the information of the digital watermark form existing in the area of the image data (face photograph) (11) can make it difficult to understand the part where the digital watermark exists. Since such a digital watermark image (13) is formed on the ID card, an ID card that is extremely difficult to forge is provided.

  The information in the electronic watermark form is ID information. In this manner, ID information can be obtained from information in the form of a digital watermark.

  As shown in FIG. 2, the information to be converted into the digital watermark form is ID number 10 (12). That is, a digital watermark image (13) is printed on the surface of the base material (1), in which the information of the digital watermark form for authenticating identification consisting of the ID number 10 (12) is embedded in the image data (11) region of the facial photograph. ing.

  Thus, the ID number 10 (12) is embedded as information in the form of a digital watermark in the image data (11) area of the face photograph. By forming the digital watermark information at this position, it is difficult to determine whether or not the digital watermark information itself exists, and it is also difficult to determine the portion where the digital watermark information exists in the image.

  Further, when the ID card is forged by replacing the face photo, the information of the ID number 10 (12) as the information of the electronic watermark form is completely lost, and the forged trace remains. Thereby, a forged ID card can be detected.

  That is, the entire ID card is read by a scanner, and image data of the entire ID card is obtained. In the image data, only the face photo portion is trimmed to obtain image data of the face photo. The image data of the face photograph is processed in the digital watermark information detection system. Thereby, when the digital watermark information is not detected, the ID card is a fake card.

  On the other hand, when the ID number 10 (12) is detected, the detected ID number 10 (12) is checked against the ID number 10 (12) printed on the ID card. . If the collation results match, the ID card is a true card. If they do not match, the ID card is a fake card.

  Furthermore, as another method of authenticity determination, magnetic ID information and digital watermark ID information are input and collated. If the digital watermark ID information cannot be extracted by the digital watermark ID information extraction unit, or if the magnetic ID information and the digital watermark ID information do not match, it is determined that the ID card is a fake card. If the magnetic ID information and the digital watermark ID information match, it is determined that the ID card is a true card.

  Hereinafter, the anti-counterfeit medium (A) of the present invention will be described in more detail with specific examples, but is not limited thereto.

<Example 1>
Using normal offset ink as the general printing data, title name (gift certificate), issue number 1 (4) and department store name (Marukoshi department store) on the base material (1) made of securities paper using mitsumata fiber And offset printing. Subsequently, a print watermark image (2) having the issue number 1 using the watermark image forming ink and a digital watermark image (5) in which the information of the digital watermark form having the issue number 1 is embedded using the authenticity identification ink. Was printed to obtain an anti-counterfeit medium (A).

<Evaluation>
The gift certificate of the first embodiment is formed by combining the print watermark image (2) and the digital watermark image (5) in which the digital watermark information is embedded by the printing method. It was expensive. In addition, because of the printing method, it could be manufactured at low cost.

<Example 2>
A tape-like magnetic layer (M) is provided on the surface of the substrate (1) made of card paper, and the ID number 10 (12) and the owner (Taro letterpress) name (14) are normally offset as general print data. Offset printing was performed using ink. Subsequently, a digital watermark consisting of a print watermark image (2) having ID number 10 using watermark image forming ink and a face photograph in which information of digital watermark form having ID number 10 is embedded using authenticity identification ink. An image (13) was printed to obtain an anti-counterfeit medium (A).

<Evaluation>
The ID card according to the second embodiment is formed by combining the print watermark image (2) and the digital watermark image (13) in which the digital watermark information is embedded according to the printing method. It was expensive. In addition, because of the printing method, it could be manufactured at low cost.

It is a top view which shows one Example of the medium for forgery prevention which concerns on this invention. It is a top view which shows the other Example of the forgery prevention medium which concerns on this invention. It is a schematic diagram explaining the process of manufacturing the conventional watermarked paper. It is a top view which shows one Example of the medium for forgery prevention using the conventional watermarked paper. It is a top view which shows one Example of the medium for anti-counterfeit using the paper in which the conventional hologram thread was wound. It is a top view which shows one Example of the medium for forgery prevention using the paper which transferred the conventional hologram foil.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Base material 2 ... Print watermark image 3 ... Image data (imprint of an issuer)
4 ... Issue number 1
DESCRIPTION OF SYMBOLS 5 ... Digital watermark image 7 ... Watermark 8 ... Hologram thread 9 ... Covering part 10 ... Hologram foil 11 ... Image data (face photograph)
12 ... ID number 10
13 ... Digital watermark image 14 ... Owner name A ... Anti-counterfeit medium M ... Magnetic layer

Claims (3)

  A printed watermark image formed using a watermark image forming ink and a digital watermark image having information on a digital watermark form formed using an authenticity identification ink are printed on at least one side of the substrate. A medium for preventing forgery.   A method for producing a forgery-preventing medium, wherein a printing watermark image is printed with a watermark image forming ink on at least one side of a substrate by any one of a gravure printing method, a flexographic printing method, and an offset printing method. .   A digital watermark image having digital watermark information is printed on at least one surface of the base material (1) by using a gravure printing method, a flexographic printing method, or an offset printing method with an authenticity identifying ink. A method for producing a medium for preventing forgery.

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