JP2010115800A - Anti-counterfeit medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-counterfeit medium which enables a latent image to emerge due to change in color of three tones as the observant direction changes into a more acute angle with the surface of the base material. <P>SOLUTION: The anti-counterfeit medium includes: a first area 14 wherein a background color area 11 and a plurality of marking portions 12 positioned in a matrix in a different color from the background color area 11 on the background color area 11 are provided on the surface of the base material and a plurality of embosses 13 expressing the color of the background color area 11 at their apexes are formed in arrays and/or rows parallel to the arranging direction of the plurality of marking part 12; a second area 15 wherein a plurality of embosses 13 including the plurality of marking parts 12 at their apexes are formed in arrays and/or rows parallel to the arranging direction of the plurality of marking portions 12; a third area wherein the plurality of marking parts 12 are positioned on the background color area 11 having a width of the adjacent pitch or a more width between the plurality of embosses 13 in the first area 14 and in the second area 15, and no embosses 13 are formed. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an anti-counterfeit medium such as an anti-counterfeit sheet, and more particularly to an anti-counterfeit structure using a latent image.

  In the past, counterfeit crimes have frequently occurred in securities such as prepaid cards, various admission tickets, gift certificates and stock certificates because they are widely distributed and can be exchanged relatively easily. In particular, in recent years, with the improvement and popularization of copying machines such as color copiers, counterfeit products that cannot be easily distinguished from genuine products can be manufactured relatively easily, and countermeasures against counterfeiting are required. Yes. Moreover, measures against counterfeiting are required not only for the above-mentioned securities but also for banknotes.

  As one of countermeasures against such counterfeiting, a technique that enables authenticity determination of securities and banknotes using a latent image is considered, and is disclosed in, for example, Patent Document 1.

  The technique disclosed in Patent Document 1 includes a plurality of printed lines on a sheet base material, parallel to the printed lines, a part extending in a direction orthogonal to the printed lines, and a cross section The raised relief lines are provided to raise the latent image depending on the observation direction. When the substrate is viewed from the front, all the printed lines are visible. However, when the observation direction is changed to a direction perpendicular to the printed lines and the relief lines, the portion of the printed lines where the relief lines extend is visible behind the extended relief lines. While not possible, the other parts of the printed line remain visible. Thereby, a latent image corresponding to the shape of the relief line can be raised.

  In this way, in the case of a sheet base material provided with a relief line with a raised cross section, the printed information including the printed line printed on the surface is copied, but the raised shape of the relief line is reproduced. Can not. For this reason, even when the observation direction of the copy is changed, the latent image does not appear, thereby making it possible to determine authenticity.

  However, as described above, on the sheet base material, a plurality of printed lines, parallel to the printed lines, a part extending in a direction orthogonal to the printed lines, and a cross-section raised. In the case where a relief line is provided and a latent image is raised by the printed line and the relief line, the latent image only appears when viewed from a direction perpendicular to the printed line and the relief line. It is hard to say that it is easy to determine authenticity by image. In particular, when the observation direction is limited, there is a possibility that the authenticity determination based on the latent image cannot be performed.

Therefore, the present applicant arranges a plurality of mark portions having a color different from the background color region provided on the surface of the base material in a matrix, and rows and columns in parallel with the arrangement direction of the plurality of mark portions. A first emboss group formed so that the color of the background color region is exposed at the top, and a second emboss group formed so that the top includes a mark portion. When the observation direction is changed to a direction that forms an acute angle with respect to the substrate surface, the region where the first embossing group is arranged and the second embossing group are arranged. An anti-counterfeit medium that can be easily discriminated by a latent image without being restricted in the viewing direction due to the difference in color that appears in the imaged area is disclosed in Patent Document 2 Yes.
JP 2000-313161 A JP 2008-30222 A

  As a result of intensive research on the anti-counterfeit medium for performing authenticity determination using a latent image as described above, the applicant of the present invention has obtained a region in which the first emboss group as described above is disposed and a second emboss group. When the observation direction is changed to a direction that forms an acute angle with respect to the surface of the substrate, as well as the difference in color from the area where the lens is located In addition, the inventors have devised a configuration in which three gradation colors are generated, thereby causing not only characters but also images to emerge as latent images.

  The present invention is a forgery prevention medium that can easily perform authenticity determination by a latent image without being limited to the observation direction, and the observation direction is changed to a direction that forms an acute angle with respect to the substrate surface. Another object of the present invention is to provide a forgery prevention medium capable of causing a latent image to emerge due to a difference in color of three gradations.

In order to achieve the above object, the present invention provides:
An anti-counterfeit medium in which a background color region and a plurality of mark portions having a color different from the background color region on the background color region and arranged in a matrix are provided on the surface of the substrate. ,
A plurality of embossments in which the color of the background color region is exposed at the top, a first region formed in a row and / or column in parallel with the arrangement direction of the plurality of mark portions;
A plurality of embossments including the mark portion at the top, a second region formed by forming rows and / or columns in parallel with the arrangement direction of the plurality of mark portions;
On the background color area where the plurality of mark portions are arranged, the first and second areas are arranged with a width equal to or larger than the adjacent pitch of the plurality of embosses, and the emboss is not formed. 3 regions.

  In the present invention configured as described above, when the substrate is observed from the front, a plurality of mark portions provided in a matrix shape with a color different from the background color region is recognized in the background color region of the substrate surface. The The substrate is formed with a plurality of embosses in which the color of the background color region is exposed at the top in the first region and a plurality of embosses including a mark portion at the top in the second region. When the material is observed from the front, the emboss is not recognized and the plurality of mark portions are only recognized as a matrix. When the observation direction is changed from this state to a direction that forms an acute angle with respect to the substrate surface, in the first and second regions where the emboss is formed, the tops of the plurality of embosses formed on the substrate surface The part other than is hidden by the embossing adjacent to the observation direction side of the emboss and disappears, and only the top is visible. At that time, among the plurality of embosses, in the emboss formed in the first region, the color of the background color region is exposed at the top, and in the emboss formed in the second region, the background color region Since the mark portion having a different color from the first portion is exposed at the top, the first region looks like the color of the background color region, and the second region looks like the color of the mark portion. Further, a third area where no embossing is formed is provided on the background color area where the plurality of mark portions are arranged. In the third area, a plurality of areas in the first and second areas are provided. Since the width is equal to or greater than the adjacent pitch of the emboss, the background color area and the mark portion are hidden by the emboss and cannot be seen even if the observation direction is changed to a direction that forms an acute angle with the substrate surface. In other words, the color of the background color area and the color of the mark portion appear to be mixed. As a result, the latent image emerges due to the three-tone color difference between the color of the first region, the color of the second region, and the color of the third region.

  In addition, if the third region is arranged at the boundary between the first region and the second region, the color that can be seen in the first region at the boundary between the first region and the second region And the color seen in the second area can be seen, and the color seen from the first area to the second area gradually changes, and in particular, the latent image is converted into the image. In this case, the contour can be smoothed.

  Further, if the embossing is not formed in any of the mark area and the background color area adjacent to the mark area in the third area, the observation direction with respect to the anti-counterfeit medium is changed from the front. In the area 3, the background color area and the mark portion are not affected by the embossing at all.

  As described above, in the present invention, the background color region and a plurality of mark portions having a color different from the background color region on the background color region and arranged in a matrix are provided on the substrate surface. Furthermore, a plurality of embosses in which the color of the background color region is exposed at the top portion are formed in a row and / or column in parallel with the arrangement direction of the plurality of mark portions, and the top portion A second color region in which a plurality of embosses including mark portions are formed in rows and / or columns in parallel with the arrangement direction of the plurality of mark portions, and a background color region in which the plurality of mark portions are arranged And the third region where the embossing is not formed is arranged with a width equal to or larger than the adjacent pitch of the plurality of embossments in the first and second regions, and the observation direction is the surface of the substrate. If you change the direction to make an acute angle to It is possible to highlight the latent image by the color difference of the three gradations of color by color and the third region by the color and the second region by the first region.

  In the case where the third region is arranged at the boundary between the first region and the second region, the first region is located at the boundary between the first region and the second region. A color that is a mixture of the color that can be seen and the color that can be seen in the second region will be seen, and the color that will be seen from the first region to the second region will gradually change. In the case of an image, the contour can be smoothed.

  In the case where the embossing is not formed in any of the mark area and the background color area adjacent to the mark area in the third area, the observation direction with respect to the anti-counterfeit medium is changed from the front. In the third region, the background color region and the mark portion are not affected by the embossing at all.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a diagram showing an anti-counterfeit sheet that is an embodiment of the anti-counterfeit medium of the present invention, (a) is a diagram showing the overall configuration, and (b) is an anti-counterfeit structure shown in (a). FIG. 10 is a diagram illustrating a detailed configuration of FIG. 10, and FIG. 10C is a diagram illustrating a state in which the forgery prevention structure 10 illustrated in FIG. 10B is divided into three regions according to the relationship between the background color region 11, the mark portion 12 and the emboss 13. (D) is a figure which shows the relationship between the background color area | region 11 and the mark part 12 in the forgery prevention structure 10 shown in (b), (e) is the formation area of the emboss 13 in the forgery prevention structure 10 shown in (b). (F) is a diagram showing a configuration of the emboss 13 formed in the first region 14 shown in (c), and (g) is formed in the second region 15 shown in (c). It is a figure which shows the structure of the embossing.

  As shown in FIG. 1A, the forgery prevention sheet 1 of this embodiment is configured by providing a forgery prevention structure 10 in a partial region of a sheet base 2 made of paper. The sheet base material 2 has a flat surface portion 3 that becomes the surface of the base material, and an information printing region 4 is provided in a partial region of the flat surface portion 3 and a forgery prevention structure 10 is provided in another region. . The anti-counterfeit sheet 1 configured in this manner can be used as an entrance ticket for a concert, for example. In this case, the contents of the concert, the venue name, the seat number, etc. are printed in the information printing area 4. In addition, before the information is printed in the information printing area 4 of the sheet base material 2, it may be possible to print a tint block or precolor the sheet base material 2 as a pre-print. In this case, it is necessary not to make it difficult to see the latent image by the forgery prevention structure 10.

  As shown in FIGS. 1B and 1D, the anti-counterfeit structure 10 provided on the sheet base material 2 has a background color region 11 made of black different from the base color of the flat portion 3 of the sheet base material 2. A plurality of mark portions 12 made of white different from the background color region 11 are arranged in a matrix. A plurality of embosses 13 are formed in a region where the plurality of mark portions 12 are arranged in a matrix.

  Further, as shown in FIG. 1C, the forgery prevention structure 10 includes a first area 14, a second area 15, and a third area having shapes corresponding to the latent image that is raised by the forgery prevention structure 10. 16. The first area 14, the second area 15, and the third area 16, as shown in FIGS. 1B, 1C, and 1E, are the background color area 11, the mark portion 12, and the emboss. The emboss 13 is formed in the first region 14 and the second region 15, and the emboss 13 is not formed in the third region 16. As shown in FIGS. 1F and 1G, the emboss 13 formed in the first region 14 and the second region 15 is formed by using 0.02 embossed plate or the like from the plane portion 3 side. It is a dome-like shape formed by recessing about 0.1 mm, and its cross-sectional area gradually increases from the top portion 13a toward the recess direction of the sheet base material 2, and at the bottom of the embossing 13, It has a circular shape with a diameter of 0.5 mm or less.

  As shown in FIG. 1B, the emboss 13 formed in the first region 14 is formed between a plurality of mark portions 12 arranged in a matrix, and as shown in FIG. Further, the black color of the background color region 11 in the portion surrounded by the four mark portions 12 is exposed at the top portion 13a. In the first region 14, the mark portion 12 is disposed between the embosses 13. Further, as shown in FIG. 1B, the emboss 13 formed in the second region 15 is formed so as to overlap with the plurality of mark portions 12 arranged in a matrix, whereby FIG. As shown in g), the mark portion 12 is included in the top portion 13a. In the second area 15, the background color area 11 is arranged between the embosses 13. Thus, the embosses 13 formed in the first region 14 and the second region 15 are arranged in rows and columns in parallel with the arrangement direction of the plurality of mark portions 12 in the first region 14 and the second region 15. Is formed.

  In addition, as shown in FIGS. 1B, 1C, and 1E, the third region 16 includes a boundary portion between the first region 14 and the second region 15, and the first region 14. In each of the surrounded portion and the portion surrounded by the second region 15, the first region 14 and the second region are arranged with a width w equal to or greater than the adjacent pitch t of the emboss 13 and the emboss 13 is not formed. Further, in the boundary portion between the first region 14 and the second region 15 and the portion surrounded by the second region 15, the mark portion 12 and the background color region 11 adjacent to the mark portion 12 are both present. The emboss 13 is not formed. The width w of the third region 16 indicates the interval between the plurality of embosses 13. Specifically, at the boundary portion between the first region 14 and the second region 15, the distance between the emboss 13 formed in the first region 14 and the emboss 13 formed in the second region 15. Yes, in the portion surrounded by the first region 14, it is the interval between the embosses 13 formed in the first region 14, and in the portion surrounded by the second region 15, it is formed in the second region 15. This is the interval between the embosses 13. That is, the width of the third region 16 is not limited to the width in the band-shaped region, and the interval between the embosses 13 is referred to as the width even in a non-band shape having a certain area.

  Below, the manufacturing method of the forgery prevention sheet 1 comprised as mentioned above is demonstrated.

  First, the background color region 11 is printed in black so that the white mark portions 12 remain in a matrix in the region where the forgery prevention structure 10 of the sheet base material 2 is provided. The background color region 11 may be printed simultaneously with the pre-printing as described above or after the pre-printing described above.

  Next, emboss 13 is formed in the 1st field 14 and the 2nd field 15 using the embossing plate among the fields where background color field 11 was printed. The emboss 13 is formed between the plurality of mark portions 12 in the first region 14, and is formed so as to overlap the mark portion 12 in the second region 15.

  As described above, the anti-counterfeit sheet 1 is manufactured, and then information corresponding to the application is printed on the information printing area 4 of the sheet base 2 and used.

  Below, the effect | action of the forgery prevention sheet 1 mentioned above is demonstrated.

  First, the operation when the anti-counterfeit sheet 1 shown in FIG. 1 is observed from the front, that is, from the normal direction of the flat portion 3 of the sheet base material 2 will be described.

  FIG. 2 is a view for explaining the action when the forgery prevention sheet 1 shown in FIG. 1 is observed from the front, (a) is a view of the first region 14 as seen from the cross-sectional direction, (b). FIG. 6 is a diagram of the second region 15 viewed from the cross-sectional direction, and FIG. 5C is a diagram illustrating how the background color region 11 and the mark portion 12 are seen in the forgery prevention structure 10.

  When the anti-counterfeit sheet 1 shown in FIG. 1 is observed from the front, that is, from the normal direction of the plane portion 3, as shown in FIGS. 2A and 2B, the anti-counterfeit sheet 1 is observed from the height direction of the emboss 13. Therefore, the emboss 13 formed on the sheet base material 2 is not recognized, and the white mark portions 12 arranged in a matrix on the black background color region 11 are recognized as shown in FIG. It is only done. For this reason, when the anti-counterfeit sheet 1 is observed from the normal direction of the plane portion 3, the latent images formed by the first region 14, the second region 15, and the third region 16 do not appear.

  Next, an operation when the observation direction with respect to the anti-counterfeit sheet 1 shown in FIG.

  FIG. 3 is a diagram for explaining the operation when the observation direction with respect to the forgery prevention sheet 1 shown in FIG. 1 is changed from the front, and (a) shows the first region 14 as seen from the side. (B) is a view of the second region 15 viewed from the side, (c) is a view of the third region 16 viewed from the side, and (d) is a view of the whole anti-counterfeit structure 10. FIG.

  When the observation direction with respect to the forgery prevention sheet 1 shown in FIG. 1 is changed from the front, the angle formed by the observation direction with respect to the flat portion 3 of the sheet base 2 becomes an acute angle. Then, as shown in FIGS. 3A and 3B, in the first region 14 and the second region 15, the region other than the top portion 13 a of the emboss 13 and the region between the emboss 13 are the emboss 13. It is hidden by the embossing 13 adjacent to the observation direction side, so that only the top portion 13a of the embossing 13 can be seen.

  Here, in the emboss 13 formed in the first region 14 among the plurality of embosses 13, the black color of the background color region 11 is exposed at the top portion 13a as shown in FIG. Further, in the emboss 13 formed in the second region 15, as shown in FIG. 1G, a white mark portion 12 different from the background color region 11 is exposed at the top portion 13 a.

  Therefore, the observation direction with respect to the anti-counterfeit sheet 1 is changed to the lower side in FIG. 1, for example, and a region other than the top portion 13 a of the plurality of embosses 13 and a region between the embosses 13 are adjacent to the observation direction side of the embosses 13. When the emboss 13 is hidden and disappears and only the top 13a of the emboss is visible, the first region 14 appears black due to the background color region 11 and the second region 15 has the mark portion 12. It will appear white due to.

  Further, in the third region 16, the emboss 13 is not formed by a width w that is equal to or larger than the adjacent pitch t of the emboss 13 in the first region 14 and the second region 15, so that as shown in FIG. Even if the observation direction with respect to the anti-counterfeit sheet 1 is changed from the front, the background color region 11 and the mark portion 12 arranged in the third region 16 are adjacent to the observation direction side of the third region 16. It is not hidden by the emboss 13, so that the color of the background color region 11 and the color of the mark portion 12 appear to be mixed. Further, in the third region 16, the boundary portion between the first region 14 and the second region 15 and the portion surrounded by the second region 15 are adjacent to the mark portion 12 and the mark portion 12. Since the emboss 13 is not formed in any of the background color areas 11, the background color area 11 and the mark portion 12 affect the influence of the embosses 13 when the observation direction with respect to the forgery prevention sheet 1 is changed from the front. I will never receive it.

  Thus, when the observation direction with respect to the anti-counterfeit sheet 1 is changed from the front, the first region 14 looks black due to the background color region 11, and the second region 15 becomes white due to the mark portion 12. In the third area 16, since the color of the background color area 11 and the color of the mark portion 12 appear to be mixed gray, as shown in FIG. The latent image emerges due to the three-tone color difference between the color of the second region 15 and the color of the third region 16.

  Here, in the anti-counterfeit sheet 1 shown in FIG. 1, a plurality of mark portions 12 are arranged in a matrix in the background color region 11, and the emboss 13 formed in the first region 14 and the second region 15 is Since the rows and / or columns are formed in parallel with the arrangement direction of the plurality of mark portions 12, the first portion can be observed from any direction that forms an acute angle with respect to the plane portion 3. In the region 14 and the second region 15, the region other than the top portion 13 a of the emboss 13 and the region between the emboss 13 are hidden by the emboss 13 adjacent to the observation direction side of the emboss 13 and become invisible. 13, only the top portion 13 a is visible, and in the third region 16, the background color region 11 and the mark portion 12 are adjacent to the third region 16 on the observation direction side. Since no hidden by scan 13, even if went which direction to change the viewing direction against counterfeiting preventing sheet 1, the same action occurs.

  When the forgery prevention sheet 1 described above is copied, the information printed in the information printing area 4 of the sheet base 2 and the background color area 11 and the mark portion 12 provided by printing on the sheet base 2 are copied. However, even emboss 13 cannot be reproduced. For this reason, even when the observation direction of the copy is changed, the latent image due to the action of the emboss 13 as described above does not appear, thereby making it possible to determine authenticity.

  In addition, about the height of the embossing 13 in this form, and the dimension of a bottom part, not only what was mentioned above but can be set suitably.

  In addition to the dome shape shown in this embodiment, the shape of the emboss 13 may be a shape obtained by removing the apex from the cone, or a cylindrical shape or a cone shape. Conceivable. It is also conceivable that the cross section is rectangular.

  The relative positions where the first region 14, the second region 15, and the third region 16 are arranged are such that the first region 14 surrounds the third region 16 and the third region 16 as in the present embodiment. The area 16 is not limited to surrounding the second area 15. However, if the third region 16 is arranged at the boundary between the first region 14 and the second region 15, the first region is located at the boundary between the first region 14 and the second region 15. As a result, a gray color in which the black color seen at 14 and the white color seen at the second region 15 are mixed is seen, and the color seen from the first region 14 to the second region 15 changes gradually. Thus, when the latent image is an image, the contour can be smoothed.

  In this embodiment, the background color region 11 and the mark portion 12 are colored black. The background color region 11 is black and the mark portion 12 is white. However, the background color region 11 is white and the mark portion 12 is It is good also as black, and if it is a mutually different color, it will not be restricted to white and black.

  In this embodiment, the anti-counterfeit sheet 1 in which the anti-counterfeit structure 10 is provided on the sheet base material 2 made of paper has been described as an example of the anti-counterfeit medium. The present invention is not limited to 1, but can be applied to a sheet base material made of a film or a card base material in which a plurality of resin layers are laminated and provided with the forgery prevention structure 10 as described above.

It is a figure which shows the forgery prevention sheet | seat used as one Embodiment of the forgery prevention medium of this invention, (a) is a figure which shows the whole structure, (b) is a detailed structure of the forgery prevention structure shown to (a). (C) is a diagram showing a state in which the anti-counterfeit structure shown in (b) is divided into three regions according to the relationship between the background color region, the mark portion, and embossing, and (d) is shown in (b). The figure which shows the relationship between the background color area | region and mark part in the forgery prevention structure, (e) is a figure which shows the formation area of the emboss in the forgery prevention structure shown in (b), (f) is shown in (c) The figure which shows the structure of the embossing formed in the 1st area | region, (f) is a figure which shows the structure of the embossing formed in the 2nd area | region shown in (c). It is a figure for demonstrating an effect | action at the time of observing the forgery prevention sheet | seat shown in FIG. 1 from the front, (a) is the figure seen from the cross-sectional direction about the 1st area | region, (b) is about the 2nd area | region. The figure seen from the cross-sectional direction, (c) is a diagram showing the appearance of the background color area and the mark portion in the forgery prevention structure. It is a figure for demonstrating an effect | action at the time of changing the observation direction with respect to the forgery prevention sheet shown in FIG. 1 from the front, (a) is the figure seen from the side direction about the 1st area | region, (b) FIG. 7 is a view of the second region as viewed from the side, (c) is a view of the third region as viewed from the side, and (d) is a view showing how the entire forgery prevention structure is seen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Anti-counterfeit sheet | seat 2 Sheet | seat base material 3 Plane part 4 Information printing area | region 10 Anti-counterfeit structure 11 Background color area | region 12 Mark part 13 Emboss 13a Top part 14 1st area | region 15 2nd area | region 16 3rd area | region

Claims (3)

An anti-counterfeit medium in which a background color region and a plurality of mark portions having a color different from the background color region on the background color region and arranged in a matrix are provided on the surface of the substrate. ,
A plurality of embossments in which the color of the background color region is exposed at the top, a first region formed in a row and / or column in parallel with the arrangement direction of the plurality of mark portions;
A plurality of embossments including the mark portion at the top, a second region formed by forming rows and / or columns in parallel with the arrangement direction of the plurality of mark portions;
On the background color area where the plurality of mark portions are arranged, the first and second areas are arranged with a width equal to or larger than the adjacent pitch of the plurality of embosses, and the emboss is not formed. An anti-counterfeit medium having three regions. In the anti-counterfeit medium according to claim 1,
The third area is a forgery prevention medium arranged at a boundary portion between the first area and the second area. In the anti-counterfeit medium according to claim 1 or 2,
The third area is an anti-counterfeit medium in which the emboss is not formed in either the mark part or a background color area adjacent to the mark part.

Images