JP2008139557A - Counterfeit-preventing pasting material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a counterfeit-preventing pasting material which is difficult to manufacture as an imitation. <P>SOLUTION: A first printing area 2, which is formed at least in a part of a printing layer, is constituted of image-printing areas 10-12 constituting first image information 4 and second image information 5; and their background-printing area 13. In the image-printing areas 10, 12 which constitute the first image information 4, a first concealment layer which hides the surface of a base material at a first concealment rate of 100% by a metal-containing brilliant material. In the image-printing area 11 which constitutes the second image information 5, and in the background-printing area 13, a second concealment layer is formed which conceals the surface of the base material at a second concealment rate of 90% with a brilliant material. Furthermore, in the image-printing areas 10, 12 and in the background-printing area 13, a third concealment layer is formed, which conceals the concealment layer at a third concealment rate of 25% with a color material which is high in visible light absorption, as compared with the brilliant material. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an anti-counterfeit patch for use in brand protection or the like, which can be applied to these media to determine the authenticity in order to prevent forgery and deformation of various media.

  In recent years, bad counterfeit goods that infringe on intellectual property have become a major social problem. Therefore, as a countermeasure against counterfeit goods, it is widely known that an authentication label for proving that it is a genuine product is attached to the genuine product or its package. The authentication label is provided with many anti-counterfeiting means such as special ink, hologram, and magnetic recording (see, for example, Patent Documents 1 to 3).

  In addition, as a hermetic seal that can be judged to have been illegally peeled, a brittle sheet that easily breaks due to stress at the time of peeling is used as a base sheet for hermetic seal, or a special that cannot be re-adhered after peeling These conventional seals are difficult to re-seal even if you try to re-seal them after peeling, and it is difficult to reseal them. It can be determined (see, for example, Patent Document 4).

  In addition, a hologram that can reproduce a three-dimensional image using light interference can be created in the form of a seal, foil, etc., although it requires advanced manufacturing technology. It is used as a means for determining whether an article is genuine or illegal based on the presence or absence.

  Moreover, the hologram brittle seal which peels off by the support layer and a hologram layer or the peeling layer provided between these, and a support layer or a hologram layer so that the hologram stuck to such articles | goods may be peeled off and reattached may not be used. Alternatively, there is a hologram brittle seal in which a patterned release layer is formed between the support layer and the hologram forming layer, and the support layer and the hologram forming layer are peeled off (see, for example, Patent Document 5).

JP-A-10-204363 JP 2000-293108 A JP 2002-72889 A Japanese Patent Application Laid-Open No. 07-089293 No. 05-048210

  However, according to the above Patent Documents 1 to 3, if the authentication label or the sealing seal is successfully peeled off from the genuine product, the fraudulent act can be easily performed by re-attaching the authentication label to the counterfeit product. There was a problem.

  In the above-mentioned certification label or hermetic seal, there is a drawback that a counterfeit or similar product that resembles the appearance of the label or seal is relatively easy to manufacture. It is difficult to visually determine whether a label or seal is a counterfeit product, such as when it is resealed using, and it is necessary to peel it again to confirm that it is the correct label or seal Therefore, it is not easy to immediately know the fact that it has been peeled off, and it may be difficult to immediately detect illegal peeling or tampering.

  Recently, there has also been a case where a counterfeit hologram is created by so-called dead copy, in which a photosensitive material is brought into close contact with a genuine hologram, and a hologram image is transferred, and then adhered to an unauthorized product.

  However, such counterfeit prevention measures can only be applied to products that are economical in terms of production cost because expensive functional materials are required.

  The present invention generates visible and invisible images using materials such as ink used in general commercial printing, and cannot be reproduced with the current photoengraving device, unless a special appraisal device or the like is used. An anti-counterfeit patch that is difficult to manufacture as a counterfeit product is provided by providing an invisible image that cannot recognize an image and providing a bright image at low cost.

In order to solve the above problem, the anti-counterfeit patch according to claim 1 of the present invention,
In the anti-counterfeit patch having a printed layer on one side of the substrate and an adhesive layer on the other side,
Forming a first print region on at least a portion of the print layer;
The first print area includes first image information and an image print area constituting second image information different from the first image information, and the first image information and the second image information. A background print area that constitutes the background, and
In the image printing region constituting one of the first image information and the second image information, a first concealment ratio in the range of 90 to 100% of the base material surface with a glittering material containing metal is used. In the image printing region and the background printing region constituting the other, the first concealing rate within the range of 70 to 90% of the substrate surface by the glitter material is formed. Forming a concealment layer that conceals at a different second concealment rate;
Further, in the image printing area and the background printing area constituting the one, a third hiding layer having a hiding layer of 15 to 30% with a color material having higher visible light absorption than the glittering material is used. Formed a concealment layer to conceal at a rate,
It is characterized by that.
According to this feature, a concealment layer concealed with a first concealment ratio (for example, 100%) is formed in the first image print region (one image print region) by the glitter material, and the background region and the second region An image printing area (the other image printing area), that is, an area other than the first image printing area is formed with a concealing layer concealed at a second concealment ratio (for example, 90%) by a glittering material, and a background area And a concealing layer concealed at a third concealment rate (for example, 25%) by a color material having a high visible light absorption property in the first image print region, that is, the region other than the second image print region. Only the first image information is recognized in the diffused light region, only the second image information is recognized in the specularly reflected light region, and only the first image information is recognized during infrared irradiation.

The anti-counterfeit patch according to claim 2 of the present invention,
In the anti-counterfeit patch having a printed layer on one side of the substrate and an adhesive layer on the other side,
Forming a first print region on at least a portion of the print layer;
The first print area includes first image information and an image print area constituting second image information different from the first image information, and the first image information and the second image information. A background print area that constitutes the background, and
In the image print area and the background print area constituting one of the first image information and the second image information, the surface of the base material is within a range of 90 to 100% with a glittering material containing metal. A concealing layer for concealing at a concealment rate of 1 is formed, and the surface of the substrate is different from the first concealment rate in the range of 70 to 90% by the glittering material in the image printing region constituting the other. Forming a concealment layer concealing at a second concealment rate;
Further, in the image printing region and the background printing region constituting the other, a third concealment layer having a concealing layer within a range of 15 to 30% by a color material having higher visible light absorption than the glittering material. Formed a concealment layer to conceal at a rate,
It is characterized by that.
According to this feature, a concealing layer concealed with a second concealment ratio (for example, 90%) by a glittering material is formed in the first image print region (one image print region), and the background region and the second region A concealing layer concealed with a first concealment ratio (for example, 100%) is formed in the image print region (the other image print region), that is, the region other than the first image print region, and the background region And a concealing layer concealed at a third concealment rate (for example, 25%) by a color material having a high visible light absorption property in the first image print region, that is, the region other than the second image print region. Only the second image information is recognized in the diffused light region, only the first image information is recognized in the specularly reflected light region, and only the second image information is recognized during infrared irradiation.
In addition, in Claims 1 and 2, the glittering material containing the metal may be a material containing a metal, for example, various silver inks containing aluminum powder or gold ink containing brass powder as a component. Material (ink).

The anti-counterfeit patch according to claim 3 of the present invention is the anti-counterfeit patch according to claim 1 or 2,
Forming a second print area in the print layer separately from the first print area;
The second print area includes a third print area and a fourth print area having a smaller area than the third print area.
The fourth print area includes
A black ink printing area composed of black ink containing an infrared absorbing dye, and
A non-black ink printing region that is a black system composed of an ink that does not contain an infrared absorbing pigment; and
And the third image information is configured by the non-black ink printing area in the plurality of fourth printing areas in accordance with the ratio of the black ink printing area and the non-black ink printing area in the fourth printing area. did,
It is characterized by that.
According to this feature, the third image information printed separately from the first image information and the second image information is recognized when observed by an infrared reflective display device or the like.

The anti-counterfeit patch according to claim 4 of the present invention is the anti-counterfeit patch according to claim 3,
One character information is constituted by a combination of the first image information or the second image information and the third image information.
It is characterized by that.
According to this feature, one character information can be recognized only when observed by an infrared reflective display device or the like.

The anti-counterfeit patch according to claim 5 of the present invention is the anti-counterfeit patch according to any one of claims 1 to 4,
The anti-counterfeit patch comprises a brittle substrate,
It is characterized by that.
According to this feature, since the anti-counterfeit patch is destroyed when peeled, it becomes difficult to regenerate.

  The best mode for carrying out the anti-counterfeit patch according to the present invention will be described below on the basis of examples.

  An embodiment of the present invention will be described with reference to the drawings. First, FIG. 1 is a diagram showing an anti-counterfeit patch in Example 1 of the present invention, and (a) is a front view showing each printing area in the anti-counterfeit patch. FIG. 2B is a cross-sectional view showing the label 1, FIG. 2A is a view showing a visual status of image information in the diffused light region, and FIG. 2B is an image in the specularly reflected light region. FIG. 3 is a diagram showing a visual status of image information at the time of infrared irradiation, and FIG. 4 is a diagram showing a positional relationship between an illumination light source, a viewpoint, and a label when observing the label. FIG.

  FIG. 1 shows a security label (hereinafter abbreviated as label 1) 1 which is an anti-counterfeit patch as Example 1 of the present invention. As shown in FIG. 1, the label 1 includes a surface base material 1a on which a printed layer, which will be described later, is formed, a pressure-sensitive adhesive layer 1b formed on the back surface of the surface base material 1a, and a pressure-sensitive adhesive layer 1b. It is comprised from the peeling material 1c stuck on the back surface, and sticks to this to-be-adhered body by peeling the peeling material 1c and contacting the adhesion layer 1b to the to-be-adhered body which is not shown in figure. Can be done.

  The surface substrate 1a in this embodiment is made of a white polyvinyl chloride film having a brittleness with a thickness of about 50 μm, the adhesive layer 1b is made of an acrylic solvent-type adhesive, and the release material 1c is made of glassine paper. It consists of what performed the peeling process on one side of.

  In the present embodiment, the materials of the surface base material 1a, the adhesive layer 1b, and the release material 1c are not limited to the above materials, and can be changed as appropriate. In particular, the surface base material 1a and the adhesive layer 1b Is attached to a non-illustrated adherend and then stuck in a state where the surface substrate 1a having a printed layer formed on the surface is destroyed and cannot be attached again when attempting to peel off. It is preferable that the label 1 is made of a fragile material as described above, and thus the label 1 is peeled off from the adherend and illegally copied. It becomes difficult, and traces destroyed when it is peeled off, and it is possible to detect early that the label 1 has been peeled off, that is, there is a possibility that fraud has been done, so fraud is effectively prevented can do.

  At the center of the surface of the surface base material 1a, the first image information 4 in which the visibility information changes to non-visibility information by changing the angle of the viewpoint for observing the label 1 from the diffuse light region to the regular reflection light region. A circular first print area 2 on which (character information indicating “proof”) and second image information 5 (character information indicating “OK”) are printed is formed around the first print area 2. Second print in which image information 6L and 6R (image information indicating flowers) and fourth image information 7L and 7R (character information 7L indicating "proof" and character information 7R indicating "bright") are printed. Region 3 is formed.

  First, the details of the first print area 2 will be described. The first print area 2 is an image print that constitutes the first image information 4 and the second image information 5 arranged so as to partially overlap each other. The area 10 to 12 and the background print area 13 constituting the background (periphery) of the image print areas 10 to 12 are configured.

  More specifically, the first image information 4 includes an image print area 10 that includes only the characters “certificate” and an image print area 12 that configures part of the characters “certificate” and “OK”. Become. The second image information 5 includes an image print area 11 that forms only the characters “OK” and an image print area 12 that forms part of the characters “proof” and “OK”. That is, the image printing area 12 is a printing area that constitutes part of the characters “proof” and “OK”, respectively, and the first image information 4 and the second image information are partially overlapped with each other. The image printing regions 10 to 12 and the background printing region 13 are examples of silver ink containing aluminum powder as a component and a color material having higher visible light absorption than the silver ink. The area is printed by wet offset printing using violet ink.

  In this embodiment, the image printing areas 10 to 12 and the background printing area 13 are made of silver ink containing aluminum powder as a component, and violet ink which is an example of a color material having higher visible light absorption than the silver ink. However, if it is a highly bright material, instead of silver ink, for example, gold ink containing brass powder as a component may be applied, and it absorbs visible light compared to the silver ink. If it is a highly color material, other color inks such as blue ink may be used instead of violet ink.

  Among these, the image printing region 10 is a first concealment layer that conceals the substrate surface 1a with silver ink at a concealment rate of 100% (first concealment rate) by solid-printing the substrate surface 1a with silver ink. And printing the surface of the first concealing layer with a predetermined halftone dot area ratio with violet ink, thereby concealing the surface of the first concealing layer with a violet ink at a concealment ratio of 25% (third concealment ratio). It is set as the area | region in which 3 concealment layers were formed.

  The image printing area 11 prints the base material surface 1a with silver ink at a predetermined halftone dot area ratio, thereby concealing the base material surface 1a with silver ink at a concealment ratio of 90% (second concealment ratio). 2 It is set as the area | region in which the concealing layer was formed.

  In the image printing region 12, a first concealment layer that conceals the substrate surface 1a with silver ink at a concealment rate of 100% (first concealment rate) is formed by solid-printing the substrate surface 1a with silver ink. It is considered as an area.

  The background printing area 13 prints the base material surface 1a with silver ink at a predetermined halftone dot area ratio, thereby concealing the base material surface 1a with silver ink at a concealment ratio of 90% (second concealment ratio). By printing the surface of the second masking layer with a predetermined halftone dot area ratio with one masking layer and violet ink, the surface of the second masking layer with a violet ink has a masking ratio (third masking ratio) of 25%. The third concealing layer to be concealed is a region formed.

  In other words, the image print areas 10 and 12 indicating “proof” are solid-printed with silver ink. In addition, the image print area 11 indicating “OK” and the background print area 13, that is, all areas other than the image print areas 10 and 12 indicating “proof” in the first print area 2 are images indicating “OK”. Silver ink including the printing area 11 is printed with a dot area ratio of 90%.

  Further, in all the areas other than the background print area 13 and the image print area 10 indicating “proof”, that is, the image print area 11 indicating “OK” in the first print area 2, image print indicating “proof” is performed. Violet ink including area 10 is printed with a dot area ratio of 25%.

  FIG. 4 illustrates the three positional relationships of the illumination light source 20, the viewpoint 21, and the label 1 when observed in the diffused light region and the specularly reflected light region. When the positional relationship among the illumination light source 20, the viewpoint 21, and the label 1 is in the state of FIG. 4A, the observation is made in the diffused light region, and the positional relationship between the illumination light source 20, the viewpoint 21, and the label 1 is as shown in FIG. When it is in the state (b), it is observed in the regular reflection light region.

  That is, FIG. 2 shows an observation view when the label 1 configured as described above is observed in the diffused light region and the regular reflection light region. As shown in FIG. 2A, when observed in the diffused light region, only the first image information 4 indicating the character information “proof” is observed, that is, the character information “OK” is indicated. The second image information 5 becomes latent and cannot be observed. When the second image information 5 is observed in the specular reflection region, only the second image information 5 indicating the character information “OK” is observed. The first image information 4 indicating character information becomes latent and cannot be observed.

  Thus, by using the silver ink which is a glittering material, the concealment rate with respect to the substrate surface 1a is different, that is, there is an appropriate concealment density difference (100% and 90%) on the substrate surface 1a. When the two first hiding layers and the second hiding layer are formed, the amount of reflected light that reaches the eyes of the observer from both of the two hiding layers having a density difference of the appropriate hiding ratio in the diffused light region Since they become smaller each other, it is possible to easily recognize the color difference, that is, the difference in shading, derived from the density difference of the concealment ratio, so that the text information of the “print” printed with silver ink can be visually recognized. (See FIG. 2 (a)).

  On the other hand, in the specularly reflected light region, although the two concealment layers have a density difference in concealment rate, the amount of reflected light that reaches the eyes of the observer from both of the two concealment layers is the same. Since it becomes extremely large, it becomes difficult to visually recognize the color tone difference, that is, the light and shade difference derived from the density difference of the concealment ratio, and it becomes difficult to visually recognize the character information of the “proof” printed in solid silver ink (FIG. 2). (See (b)).

  Also, on the first and second concealing layers, the first concealment layer and the second concealment layer that are very dense with a concealment ratio (100%, 90%) with respect to the substrate surface 1a formed using silver ink, Two concealing layers of a concealing layer formed by overlaying a very concealing third concealing layer (25%) formed using violet ink, which is an example of a color material having higher visible light absorption than silver ink In the diffused light region, the amount of reflected light reaching the viewer's eyes becomes small, so the difference in color tone and brightness from the two concealing layers can be obtained even though the constituent components are different. As a result, it becomes difficult to visually recognize, and as a result, it is difficult to visually recognize the character information of “OK” because the same degree of stimulus is observed by human eyes (see FIG. 2A).

  On the other hand, in the specular reflection region, the amount of reflected light reaching the eyes of the observer from the concealing layer made only of the glittering material becomes extremely large, whereas the violet ink that is a color material having a high visible light absorption property Since the amount of reflected light that reaches the eyes of the observer from the layer of concealed layers is relatively small, the above two concealing layers can easily recognize the light / dark difference, that is, the color tone difference resulting from the difference in the amount of reflected light. Thus, the character information “OK” can be visually recognized (see FIG. 2B).

  That is, as shown in FIG. 2, only the first image information 4 indicating “proof” is visually recognized in the diffused light region, and only the second image information indicating “OK” is visually recognized in the specularly reflected light region. Will be.

  Also, the image print areas 10 and 12 constituting the character information of “proof” are solidly printed with silver ink, and the image print area 11 and the background print area 13 constituting the character information of “OK”, that is, the first print. In the print area 2, all areas other than the image print areas 10 and 12 constituting the character information of "certificate" are printed with silver ink at a dot area ratio of 90%, so that the first print area is infrared. When 2 is irradiated, as shown in FIG. 3, only the text information of “proof” can be visually recognized.

  That is, the second image information 5 indicating “OK” is printed with silver ink at a halftone dot area ratio (90%) similar to that of the background print region 13. Since it is assimilated with the print area 13 and becomes the background of the character information of “proof”, the character of “proof” with a dot area ratio of 100% (solid printing) in the background printed with the dot area ratio of 90% Only information is visible due to the difference in the concealment ratio.

  In addition, as a technique for constructing image information in which visibility information changes to non-visibility information in this way, the present applicant previously applied and published in Japanese Patent Laid-Open No. 2001-121804. .

  Next, the details of the second print area 3 will be described. The second print area 3 is formed around the first print area 2 arranged at the center of the label 1, and the first print area 3 On the left side of FIG. 2, the third image information 7 </ b> L constituting the characters “proof” is printed, and the fourth image information 6 </ b> L indicating a flower is printed. In addition, on the right side of the first print area 2, third image information 7 </ b> R composing a character “bright” is printed, and fourth image information 6 </ b> R indicating a flower is printed.

  As shown in the enlarged view of FIG. 1, in the first halftone region 15 of m × m pixels, the fourth image information 6L and 6R arranged by a plurality of circular dots 15a is converted into cyan (C), magenta. (M) and yellow (Y) are printed in three colors, and in the second halftone area of n × n pixels, the third image information 7L and 7R arranged by circular dots 16a is used, and an infrared absorbing dye is used. A black (Bk) ink containing one color is printed, and the halftone dots 16b around the third image information 7L and 7R include cyan (C), magenta (M), yellow (Y ) Three-color solid.

  By doing so, the fourth image information 6L, 6R is recognized in the visible state, that is, in the diffused light region and the specularly reflected light region, and the third image information indicating “proof” and “bright”. It becomes difficult to recognize that 7L and 7R are concealed (see FIG. 2). Further, when the label 1 is irradiated with infrared rays, the third image information 7L and 7R can be recognized (see FIG. 3).

  In other words, black (Bk) of basic four-color inks of cyan (C), magenta (M), yellow (Y), and black (Bk) used in general commercial printing is mainly composed of carbon black. It is a black pigment and exhibits absorption over the entire region from the ultraviolet region to the infrared region. In the general market, for example, chromofine black ink manufactured by Dainichi Seika Kogyo Co., Ltd. has security recording materials that take advantage of the unique property of not absorbing infrared rays. Of the four basic colors, cyan (C) , Magenta (M) and yellow (Y) superimposed carbon black containing black (Bk) when observed using a special appraisal device such as an infrared camera, etc. Only images printed with ink are visible.

  Therefore, when two types of halftone images (the third image information 7L and 7R and the fourth image information 6L and 6R) are evenly arranged on the same plane, cyan (C ), Magenta (M), yellow (Y), and black (Bk) basic four color inks are used to generate visible and invisible images. It is possible to print an invisible image that cannot recognize an image unless it is used at low cost.

  As described above, in the label 1 according to the first embodiment of the present invention, the first image printed areas 10 and 12 are concealed with silver ink at the first concealment rate (100%). A concealing layer is formed, and the background printing region 13 and the second image printing region 11, that is, the regions other than the first image printing regions 10 and 12, are concealed with silver ink at the second concealing rate (90%). In addition to the formation of the second concealment layer, the third concealment ratio (15) is formed by a color material having high visible light absorption in the region other than the background print region 13 and the first image print region 10, that is, the second image print region 11. %) Is formed, so that only the first image information 4 is recognized in the diffused light region, only the second image information 5 is recognized in the specularly reflected light region, and When the infrared image is irradiated, the first image information 4 There are recognized.

  Thus, by changing the angle of the viewpoint for observing the label 1 between the diffused light region and the specularly reflected light region, the first image information 4 and the second image information 5 are not visually recognized. A plurality of images composed of the first image information 4 and the second image information 5 printed with the same silver ink when irradiated with infrared rays as well as changing between the (concealment) state. Not all the information is visually recognized, but only one image information among them is visually recognized.

  Therefore, by printing one kind of silver ink used in general commercial printing with different concealment ratios, not only changing the visual state between the diffused light region and the regular reflected light region, Since a separate visual state can be formed during infrared irradiation, etc., it is impossible to copy with current photoengraving devices, and invisible images that cannot be recognized unless a special appraisal device is used In addition, by providing a glittering image at a low cost, a forgery-preventing brittle patch that is difficult to manufacture as a counterfeit can be formed.

  5 to 7 show a label 31 as Embodiment 2 of the present invention. FIG. 5 is a front view showing an anti-counterfeit patch in Example 2 of the present invention, FIG. 6 (a) is a view showing a visual status of image information in a diffused light region, and FIG. It is a figure which shows the visual recognition status of the image information in a reflected light area | region, FIG. 7 is a figure which shows the visual recognition status of the image information at the time of infrared irradiation.

  In the first embodiment, the first image information 4 and the second image information 5 are arranged so as to partially overlap each other. However, as shown in the label 31 shown in FIG. The “positive” character information that is the first image information 34 and the “OK” character information that is the second image information 35 may be printed in a state where they are arranged independently of each other. In addition, in this Example 2, about the site | part comprised similarly to the said Example 1, the detailed description shall be abbreviate | omitted by attaching | subjecting the code | symbol which added 30 to each code | symbol.

  In the second embodiment, the image printing area 40 constituting the first image information 34 indicating “positive” is 100% of the base material surface 1a with silver ink by solid-printing the base material surface 1a with silver ink. A first concealing layer concealed at a concealing rate (first concealing rate), and the surface of the first concealing layer by violet ink by printing the surface of the first concealing layer at a predetermined dot area ratio using violet ink. And a third concealment layer for concealing at a concealment rate of 25% (third concealment rate).

  The image printing area 41 constituting the second image information 35 indicating “OK” prints the substrate surface 1a with silver ink at a predetermined halftone dot area ratio, thereby 90% of the substrate surface 1a with silver ink. It is set as the area | region in which the 2nd concealment layer concealed with the concealment rate (2nd concealment rate) was formed.

  The background printing area 13 prints the base material surface 1a with silver ink at a predetermined halftone dot area ratio, thereby concealing the base material surface 1a with silver ink at a concealment ratio of 90% (second concealment ratio). By printing the surface of the second masking layer with a predetermined halftone dot area ratio with one masking layer and violet ink, the surface of the second masking layer with a violet ink has a masking ratio (third masking ratio) of 25%. The third concealing layer to be concealed is a region formed.

  The third image information 37L and 37R includes third image information 37L including “true” character information and third image information 37R including “good” character information. Like Example 1, it is comprised with the blank (Bk) ink.

  FIG. 6 shows an observation diagram when the label 31 configured as described above is observed in the diffused light region and the regular reflection light region. As shown in FIG. 6A, when observed in the diffused light region, only the first image information 34 indicating “positive” character information is observed, that is, the character information “OK” is indicated. The second image information 35 becomes latent and cannot be observed. As shown in FIG. 6B, when the image is observed in the regular reflection light region, the second image information 35 indicating the character information “OK”. Only the first image information 34 indicating “positive” character information becomes latent and cannot be observed.

  When the first print area 32 is irradiated with infrared rays, only “positive” character information is visible as shown in FIG. That is, the second image information 35 indicating “OK” is printed with silver ink at a halftone dot area ratio (90%) similar to that of the background print area 43 and is assimilated with the background print area 43. Only the “positive” character information is visible.

  Further, when both the first print area 32 and the second print area 33 are irradiated with infrared rays, as shown in FIG. 7, “true” “product” as the third image information 37L and 37R, The “correct” character information constituting the first image information 4 arranged in the center can be visually recognized. By combining these character information, one character information (word) called “genuine product” is obtained. It is formed.

  In this way, by only combining the image information printed in each of the first print area 32 and the second print area 33 only during the infrared irradiation, the predetermined character information is formed, so that the counterfeit product It is possible to construct a forgery-proof brittle patch that is difficult to manufacture.

  Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.

  For example, in the first and second embodiments, the first, second, and third image information are composed of character information. However, the image information is not limited to character information. For example, the fourth image information It may be composed of information such as pattern information, or information such as figures and symbols. Further, the fourth image information 6L, 6R may be information such as character information, figures, symbols, and the like.

  In the first and second embodiments, two types of image information having different modes are printed in the first print areas 2 and 32. However, two or more types of image information may be arranged.

  In the first embodiment, the first concealment layer having the same concealment ratio (100%) is formed in the image print region 12 with the same silver ink as that of the image print region 10 constituting the first image information 4. However, the 2nd concealment layer by the same concealment rate (90%) may be formed with the same silver ink as the image printing area | region 11 which comprises the 2nd image information 5. FIG.

  Moreover, in the said Example 1, 2, although the 3rd concealment layer was formed in the surface of a 1st concealment layer and a 2nd concealment layer, this invention is not limited to this, A 3rd concealment layer is provided. You may form directly on the surface of the surface base material 1a. In this case, for example, a plurality of lines that cross the first printing region 2 in the left-right direction are formed in the vertical direction, and the first concealment layer and the second concealment layer are alternately arranged on each line, and the third concealment layer May be formed on a line different from the line on which the first hiding layer and the second hiding layer are arranged.

  In Examples 1 and 2, the concealment rate of the first concealment layer was 100%, the concealment rate of the second concealment layer was 90%, and the concealment rate of the third concealment layer was 25%. The concealment rate of the concealment layer is within a range of 90 to 100%, the concealment rate of the second concealment layer is within a range of 70 to 90%, and the concealment rate of the third concealment layer is a predetermined value within a range of 15 to 30%. If the concealment rates of the first concealment layer and the second concealment layer are different from each other, various modifications can be made.

In the first and second embodiments, the first concealment layer for concealing the surface of the base material with silver ink at the first concealment rate of 100% in the image print regions 10 and 12 constituting the first image information 4. In the second image printing region 11 and the background printing region 13, a second concealing layer that conceals the substrate surface with the second concealing rate of 90% is formed by the silver ink, and further, an image is formed. In the printing areas 10 and 12 and the background printing area 13, a third concealing layer that conceals the concealing layer at a third concealing rate of 25% is formed with violet ink having higher visible light absorption than silver ink. However, the present invention is not limited to this,
In the image printing area 11 constituting the second image information 5, a first concealing layer for concealing the substrate surface with a silver ink at a first concealing ratio of 100% is formed, and the first image printing area 10 is formed. , 12 and the background printing region 13 are formed with a second concealing layer that conceals the surface of the substrate with silver ink at a second concealing rate of 90%. Further, in the image printing region 11 and the background printing region 13, You may form the 3rd concealment layer which conceals a concealment layer with the 3rd concealment rate of 25% with violet ink with a high visible light absorptivity compared with silver ink.

  Furthermore, 100% of the substrate surface is made of silver ink in the image print regions 10 and 12 (or image print region 11) and the background print region 13 constituting the first image information 4 (or second image information 5). The first concealment layer concealed at the first concealment ratio is formed, and the image print region 11 (or the image print regions 10 and 12) constituting the second image information 5 (or the first image information 4) is formed. Forms a concealing layer that conceals the surface of the substrate with a second concealment ratio of 90% with silver ink. Further, the image print region 11 (or image print regions 10 and 12) and the background print region 13 have silver You may make it form the 3rd concealment layer which conceals the concealment layer with the 3rd concealment rate of 25% with the violet ink which has high visible light absorptivity compared with ink.

It is a figure which shows the forgery prevention patch in Example 1 of this invention, (a) is a front view which shows each printing area | region in a forgery prevention patch, (b) is sectional drawing which shows a forgery prevention patch. . (A) is a figure which shows the visual recognition condition of the image information in a diffused light area | region, (b) is a figure which shows the visual recognition condition of the image information in a regular reflection light area | region. It is a figure which shows the visual recognition condition of the image information at the time of infrared irradiation. It is a figure which shows the positional relationship of the illumination light source, viewpoint, and a label when observing a label. It is a front view which shows the forgery prevention patch in Example 2 of this invention. (A) is a figure which shows the visual recognition condition of the image information in a diffused light area | region, (b) is a figure which shows the visual recognition condition of the image information in a regular reflection light area | region. It is a figure which shows the visual recognition condition of the image information at the time of infrared irradiation.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Label 1a Base material surface 2 1st printing area 3 2nd printing area 4 1st image information (proof)
5 Second image information (OK)
6L, 6R 4th image information (flowers and flowers)
7L, 7R Third image information (proof)
10 to 12 Image printing area 13 Background printing area 15 First halftone area 16 Second halftone area 20 Illumination light source 21 View point

Claims (5)

In the anti-counterfeit patch having a printed layer on one side of the substrate and an adhesive layer on the other side,
Forming a first print region on at least a portion of the print layer;
The first print area includes first image information and an image print area constituting second image information different from the first image information, and the first image information and the second image information. A background print area that constitutes the background, and
In the image printing region constituting one of the first image information and the second image information, a first concealment ratio in the range of 90 to 100% of the base material surface with a glittering material containing metal is used. In the image printing region and the background printing region constituting the other, the first concealing rate within the range of 70 to 90% of the substrate surface by the glitter material is formed. Forming a concealment layer that conceals at a different second concealment rate;
Further, in the image printing area and the background printing area constituting the one, a third hiding layer having a hiding layer of 15 to 30% with a color material having higher visible light absorption than the glittering material is used. Formed a concealment layer to conceal at a rate,
An anti-counterfeiting patch characterized by the above. In the anti-counterfeit patch having a printed layer on one side of the substrate and an adhesive layer on the other side,
Forming a first print region on at least a portion of the print layer;
The first print area includes first image information and an image print area constituting second image information different from the first image information, and the first image information and the second image information. A background print area that constitutes the background, and
In the image print area and the background print area constituting one of the first image information and the second image information, the surface of the base material is within a range of 90 to 100% with a glittering material containing metal. A concealing layer for concealing at a concealment rate of 1 is formed, and the surface of the substrate is different from the first concealment rate in the range of 70 to 90% by the glittering material in the image printing region constituting the other. Forming a concealment layer concealing at a second concealment rate;
Further, in the image printing region and the background printing region constituting the other, a third concealment layer having a concealing layer within a range of 15 to 30% by a color material having higher visible light absorption than the glittering material. Formed a concealment layer to conceal at a rate,
An anti-counterfeiting patch characterized by the above. Forming a second print area in the print layer separately from the first print area;
The second print area includes a third print area and a fourth print area having a smaller area than the third print area.
The fourth print area includes
A black ink printing area composed of black ink containing an infrared absorbing dye, and
A non-black ink printing region that is a black system composed of an ink that does not contain an infrared absorbing pigment; and
And the third image information is configured by the non-black ink printing area in the plurality of fourth printing areas in accordance with the ratio of the black ink printing area and the non-black ink printing area in the fourth printing area. did,
The anti-counterfeit patch according to claim 1 or 2. One character information is constituted by a combination of the first image information or the second image information and the third image information.
The anti-counterfeit patch according to claim 3. The anti-counterfeit patch comprises a brittle substrate,
The anti-counterfeit patch according to any one of claims 1 to 4.

Images