JP4832330B2 - Anti-counterfeit media - Google Patents

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.
JP 2000-313161 A

  However, as described above, on the sheet base material, a plurality of printed lines, parallel to the printed lines, a part extends in a direction perpendicular to the printed lines, and the cross-section is 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.

  The present invention has been made in view of the problems of the conventional techniques as described above, and provides a forgery prevention medium that can easily perform authenticity determination by a latent image without being limited to an observation direction. The purpose is to provide.

In order to achieve the above object, the present invention provides:
A background color region provided on the substrate surface;
A plurality of mark coloration areas provided with colors different from the background color area, and arranged in rows and / or columns on the background color area;
A plurality of first protrusions formed by configuring rows and / or columns in parallel with the arrangement direction of the plurality of mark coloration regions in the predetermined region of the background color region;
A plurality of second convex portions formed by configuring rows and / or columns in parallel to the arrangement direction of the plurality of mark coloration regions in an area other than the predetermined area in the background color area;
At least one of the first convex portion and the second convex portion includes only one of the background color region and the mark coloration region, and the first convex portion Of the second protrusions, the other protrusion includes a region different from the region included in the one protrusion.

  In the present invention configured as described above, when the substrate is observed from the front, the substrate is provided with a row and / or column configured in a color different from the background color region on the background color region of the substrate surface. A plurality of mark coloration areas are recognized. In the base material, a plurality of first convex portions are formed in a predetermined region of the background color region, and a plurality of second convex portions are formed in a region other than the predetermined region in the background color region. When the material is observed from the front, it is visually recognized from the top side to the bottom side in the convex shape of this convex part, so that only a plurality of mark coloration regions constituting rows and / or columns are recognized. In addition, the latent image formed by the plurality of first protrusions or second protrusions does not appear to appear. When the observation direction is changed from this state to a direction that forms an acute angle with respect to the substrate surface, the plurality of first protrusions and the plurality of second protrusions formed on the substrate can be recognized. Come. At least one of the first convex portion and the second convex portion includes only one of the background color region and the mark coloration region, and the first convex portion and the second convex portion are included. Since the other convex part includes an area different from the area included in the first convex part, the first convex part and the second convex part have the color of the area included in the first convex part. It becomes distinguishable by the color of the area | region which a 2nd convex part contains. Therefore, the latent images formed by the plurality of first protrusions or the plurality of second protrusions appear to appear as a result of the difference in color. At this time, since at least one of the first convex portion and the second convex portion includes only one of the background color region and the mark coloration region, the color of the first convex portion and the second convex portion. The difference between the two becomes clear and the latent image becomes easy to recognize. In addition, at least one of the first convex portion and the second convex portion includes only one of the background color region and the mark color arrangement region, and the first convex portion and the second convex portion Since the other convex portion of the convex portion includes a region different from the region included in the one convex portion, the first convex portion can be observed from any direction that forms an acute angle with respect to the substrate surface. Due to the difference in color between the convex portions and the second convex portions, the latent images formed by the plurality of first convex portions or the plurality of second convex portions appear to appear.

  As described above, in the present invention, a plurality of mark coloration areas having different colors from the background color area are provided on the background color area in a row and / or column, and the background color area has a predetermined area. A plurality of first protrusions forming rows and / or columns in parallel with the arrangement direction of the plurality of mark color areas, and a plurality of mark color areas in an area other than the predetermined area in the background color area A plurality of second convex portions constituting rows and / or columns are formed in parallel with the arrangement direction of the first convex portion and at least one of the second convex portions is a background color. Because only one of the region and the mark coloration region is included, and the other convex portion of the first convex portion and the second convex portion includes a region different from the region included in the one convex portion. When observed from any direction that makes an acute angle with the substrate surface Even so, the latent image of the plurality of first protrusions or the plurality of second protrusions emerges due to the color difference between the first protrusion and the second protrusion, and the authenticity of the latent image The discrimination can be easily performed.

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

(First embodiment)
FIG. 1 is a diagram showing an anti-counterfeit sheet as a first embodiment of the anti-counterfeit medium of the present invention, (a) is a diagram showing the entire configuration, and (b) is a forgery shown in (a) The figure which shows the detailed structure of the prevention structure 210, (c) is AA 'sectional drawing shown in (b), (d) is BB' sectional drawing shown in (b), (e) is convex. The figure which shows the structure of the part 213, (f) is a figure which shows the structure of the convex part 214. FIG.

  As shown in FIG. 1, the forgery prevention sheet 201 of this embodiment is configured by providing a forgery prevention structure 210 in a partial region of a sheet base material 202 made of paper. The sheet base material 202 has a flat surface portion 203 serving as a surface of the base material, and an information printing region 204 is provided in a partial area of the flat surface portion 203 and a forgery prevention structure 210 is provided in another region. . The counterfeit prevention sheet 201 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 204. In addition, before the information is printed in the information printing area 204 of the sheet base material 202, it may be possible to print a tint block as a pre-print on the sheet base material 202 or to color it in a predetermined color. In this case, it is necessary to prevent the latent image from the forgery prevention structure 210 from being difficult to see.

  As shown in FIG. 1B, the anti-counterfeit structure 210 provided on the sheet base material 202 has a background color area 212 made of the same white color as the base color of the flat surface portion 203 of the sheet base material 202. A plurality of mark portions 211 that are mark coloration regions made of black different from the color region 212 are provided. The plurality of mark portions 211 are arranged in rows and columns on the background color region 212 to form a matrix.

  In the region where the plurality of mark portions 211 are provided in a matrix, a plurality of convex portions 213 serving as first convex portions and a plurality of convex portions 214 serving as second convex portions are formed. As shown in FIGS. 1C to 1F, these convex portions 213 and 214 were formed by recessing the sheet base material 202 by about 0.05 to 0.1 mm from the flat portion 203 side with an embossed plate or the like. Although it is a dome shape and has the same height, the diameter of the dome is larger than the diameter of the convex portion 214.

  The convex portion 213 is configured to form a row or a column in parallel with the arrangement direction of the plurality of mark portions 211 so as to express the letter “T” that is a latent image by the arrangement shape of the plurality of convex portions 213, and thereby the background color region 212, each of which is formed on a mark portion 211 provided in a region other than the predetermined region among the plurality of mark portions 211 provided in a matrix. And since the diameter is smaller than the diameter of the mark part 211, as shown in FIG.1 (e), only the mark part 211 is included. The convex portions 214 are formed by forming rows and columns in parallel with the arrangement direction of the plurality of mark portions 211 so as to surround the region where the plurality of convex portions 213 are formed in the background color region 212, Each of them is formed between four mark portions 211 provided in a matrix. Since the diameter is smaller than the size of the gap formed by the four mark portions 211, only the background color region 212 is included as shown in FIG. Note that the anti-counterfeit structure 210 illustrated in the present embodiment has 100 mark portions 211 formed in a 10 × 10 matrix for the sake of simplicity of explanation, but the number thereof should be increased. As a result, the character that becomes a latent image that can be lifted by the forgery prevention structure 210 can be made finer, and a curve or the like can be easily expressed.

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

  First, 100 mark portions 211 are printed in black in a 10 × 10 matrix shape in an area where the anti-counterfeit structure 210 of the sheet base material 202 is provided, that is, an area which becomes a white background color area 212. The mark portion 211 may be printed simultaneously with the pre-printing as described above or after the pre-printing described above.

  Next, convex portions 213 and 214 having different sizes are formed by pressing an embossed plate from the plane portion 203 side of the sheet base material 202 to the area where the mark portion 211 is printed. By this embossed plate, the convex portions 213 are formed on a plurality of mark portions 211 provided in a matrix in a predetermined region for forming a latent image “T” in the region where the mark portions 211 are printed. The convex portions 214 are formed between the mark portions 211 provided in regions other than the predetermined region among the plurality of mark portions 211 provided in a matrix.

  As described above, the anti-counterfeit sheet 201 is manufactured, and then information corresponding to the application is printed on the information printing area 204 of the sheet base material 202 and used.

  Below, the effect | action of the forgery prevention sheet 201 mentioned above is demonstrated.

  First, an operation when the anti-counterfeit sheet 201 shown in FIG. 1 is observed from the front, that is, from the normal direction of the flat portion 203 of the sheet base material 202 will be described.

  FIG. 2 is a diagram for explaining the operation when the anti-counterfeit sheet 201 shown in FIG. 1 is observed from the front, and shows how the anti-counterfeit structure 210 is seen.

  When the anti-counterfeit sheet 201 shown in FIG. 1 is observed from the front, that is, from the normal direction of the flat portion 203, as shown in FIG. 2, in the anti-counterfeit structure 210, the background color region 212 is white. On the other hand, since the plurality of mark portions 211 provided in a matrix in the background color region 212 are black, the plurality of matrix mark portions 211 are recognized. At this time, a plurality of convex portions 213 and 214 are formed on the sheet base material 202. When the anti-counterfeit sheet 201 is observed from the front, the convex portion 213 and 214 are directed from the top side to the bottom side. Therefore, the convex portions 213 and 214 are not easily recognized, and the plurality of mark portions 211 are only recognized in a matrix, and the latent image “T” does not appear and appears.

  Next, an operation when the observation direction with respect to the anti-counterfeit sheet 201 illustrated in FIG. 1 is changed from the front, that is, the normal direction of the flat portion 203 of the sheet base material 202 will be described.

  FIG. 3 is a diagram for explaining the operation when the observation direction with respect to the anti-counterfeit sheet 201 shown in FIG. 1 is changed from the front, and FIG. 3 (a) shows the observation direction with respect to the anti-counterfeit sheet 201. The figure which shows the appearance of the forgery prevention structure 210 at the time of changing to the middle lower side, (b) is the forgery prevention structure 210 at the time of changing the observation direction with respect to the forgery prevention sheet 201 to the upper side in FIG. FIG. 4C is a diagram illustrating how the anti-counterfeit structure 210 is viewed when the observation direction with respect to the anti-counterfeit sheet 201 is changed to the right side in FIG. 1, and FIG. It is a figure which shows the appearance of the forgery prevention structure 210 at the time of changing the observation direction with respect to FIG. 1 to the left side.

  When the observation direction with respect to the forgery prevention sheet 201 shown in FIG. 1 is changed from the front, the angle formed by the observation direction with respect to the flat portion 203 of the sheet base material 202 becomes an acute angle. Then, the convex portions 213 and 214 formed on the base material 202 are visually recognized from obliquely above, and the convex portions 213 and 214 can be recognized respectively. The convex portion 213 is black because it includes only the mark portion 211, and the convex portion 214 is white because it includes only the background color region 212. Can be identified. And since the convex part 213 is formed so that the character of the latent image "T" may be expressed by the arrangement | sequence shape, for example, the observation direction with respect to the forgery prevention sheet 201 is changed to the lower side in FIG. Then, as shown in FIG. 3A, a plurality of convex portions 213 are formed in a white background composed of the plurality of convex portions 214 due to a difference in color between the convex portions 213 and 214. The latent image “T” that appears is black and appears to appear. At this time, since the convex portion 213 includes only the mark portion 211, the color is black, and since the convex portion 214 includes only the background color region 212, the color is white. The difference becomes clear and the character of the latent image “T” is easily recognized.

  In addition, since the convex portion 213 includes only the mark portion 211, it is black, and since the convex portion 214 includes only the background color region 212, it is white, so which direction forms an acute angle with respect to the plane portion 203. Even when observed from above, the latent image “T” formed by the plurality of protrusions 213 appears to appear in black in the white background formed by the plurality of protrusions 214. For example, when the observation direction with respect to the anti-counterfeit sheet 201 is changed to the upper side in FIG. 1, the latent image “T” formed by the plurality of convex portions 213 appears to emerge as shown in FIG. When the observation direction with respect to the anti-counterfeit sheet 201 is changed to the right side in FIG. 1, the latent image “T” formed by the plurality of convex portions 213 emerges as shown in FIG. Further, when the observation direction with respect to the forgery prevention sheet 201 is changed to the left side in FIG. 1, a latent image “T” constituted by a plurality of convex portions 213 is shown in FIG. I can see it.

  When the anti-counterfeit sheet 201 described above is copied, the information printed in the information printing area 204 of the sheet base material 202 and the mark portions 211 provided in a matrix by printing on the sheet base material 202 are copied. The projections 213 and 214 cannot be reproduced. For this reason, even when the observation direction of the copy is changed, the latent image formed by the plurality of convex portions 213 does not appear, thereby making it possible to perform authenticity determination. Thus, when performing authenticity determination, in the anti-counterfeit sheet 201 of the present embodiment, when the observation direction with respect to the anti-counterfeit sheet 201 is changed from the normal direction of the flat portion 203 of the sheet base material 202 to which direction Even so, since the latent image formed by the plurality of convex portions 213 appears to emerge, it is possible to easily determine whether the latent image is true or false without being limited to the observation direction. Further, since the convex portions 213 and 214 are formed by recessing the flat portion 203 of the sheet base material 202, when the sheet base material 202 is viewed from the front and back, or when the sheet base material 202 is directly touched, the convex portions 213 and 214 are formed. 214 is difficult to be recognized, and the convex portions 213 and 214 are difficult to reproduce, and the forgery prevention function can be improved.

(Second Embodiment)
FIG. 4 is a diagram showing an anti-counterfeit sheet that is a second embodiment of the anti-counterfeit medium of the present invention. The figure which shows the detailed structure of the prevention structure 10, (c) is AA 'sectional drawing shown in (b), (d) is BB' sectional drawing shown in (b), (e) is convex. The figure which shows the structure of the part 13, (f) is a figure which shows the structure of the convex part 14. FIG.

  As shown in FIG. 4, the anti-counterfeit sheet 1 according to 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. .

  As shown in FIG. 4B, the anti-counterfeit structure 10 provided on the sheet base 2 has a background on a background color region 12 made of the same white color as the base color of the flat portion 3 of the sheet base 2. A plurality of mark portions 11 which are mark coloration regions made of black different from the color region 12 are provided. The plurality of mark portions 11 are arranged in rows and columns on the background color region 12 to form a matrix.

  In the region where the plurality of mark portions 11 are provided in a matrix, a plurality of convex portions 13 serving as first convex portions and a plurality of convex portions 14 serving as second convex portions are formed. As shown in FIGS. 4C to 4F, these convex portions 13 and 14 are formed by recessing the sheet base material 2 by about 0.05 to 0.1 mm from the plane portion 3 side with an embossed plate or the like. Although it is a dome shape and has the same height, the diameter of the dome is smaller than the diameter of the convex portion 14.

  The convex portion 13 is configured as a background color region by forming rows and columns in parallel with the arrangement direction of the plurality of mark portions 11 so as to express the letter “T” that is a latent image by the arrangement shape of the plurality of convex portions 13. 12 predetermined regions, each of which is formed between four mark portions 11 provided in a matrix. Since the diameter is smaller than the size of the gap formed by the four mark portions 11, only the background color region 12 is included as shown in FIG. The convex portions 14 are formed by forming rows and columns in parallel with the arrangement direction of the plurality of mark portions 11 so as to surround the region where the plurality of convex portions 13 are formed in the background color region 12. Each of them is formed on the mark portion 11 provided in a region other than the predetermined region among the plurality of mark portions 11 provided in a matrix. And since the diameter is smaller than the diameter of the mark part 11, as shown in FIG.4 (f), only the mark part 11 is included.

  The anti-counterfeit sheet 1 configured as described above is manufactured in the same manner as that shown in the first embodiment, and then information corresponding to the application is printed on the information printing area 4 of the sheet base 2. Will be 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. 4 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. 5 is a view for explaining the operation when the anti-counterfeit sheet 1 shown in FIG. 4 is observed from the front, and shows how the anti-counterfeit structure 10 is seen.

  When the anti-counterfeit sheet 1 shown in FIG. 4 is observed from the front, that is, from the normal direction of the plane portion 3, the anti-counterfeit structure 10 has a white background color region 12 as shown in FIG. 5. On the other hand, since the plurality of mark portions 11 provided in the background color region 12 in a matrix shape are black, the plurality of mark portions 11 in the matrix shape are recognized. At this time, a plurality of convex portions 13 and 14 are formed on the sheet base material 2. When the anti-counterfeit sheet 1 is observed from the front, the convex portion 13 and 14 are directed from the top side toward the bottom side. Therefore, the convex portions 13 and 14 are hardly recognized, the plurality of mark portions 11 are only recognized in a matrix shape, and the latent image “T” does not appear and appears.

  Next, an operation when the observation direction with respect to the anti-counterfeit sheet 1 shown in FIG. 4 is changed from the front direction, that is, the normal direction of the flat portion 3 of the sheet base material 2 will be described.

  FIG. 6 is a diagram for explaining the operation when the observation direction with respect to the anti-counterfeit sheet 1 shown in FIG. 4 is changed from the front, and (a) shows the observation direction with respect to the anti-counterfeit sheet 1 as shown in FIG. The figure which shows the appearance of the forgery prevention structure 10 at the time of changing to the middle lower side, (b) is the forgery prevention structure 10 at the time of changing the observation direction with respect to the forgery prevention sheet 1 to the upper side in FIG. FIG. 4C is a diagram showing how the anti-counterfeit structure 10 is viewed when the observation direction with respect to the anti-counterfeit sheet 1 is changed to the right side in FIG. 4, and FIG. It is a figure which shows the appearance of the forgery prevention structure 10 when changing the observation direction with respect to FIG. 4 to the left side.

  When the observation direction with respect to the forgery prevention sheet 1 shown in FIG. 4 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, the convex parts 13 and 14 formed in the base material 2 are visually recognized from obliquely above, and the convex parts 13 and 14 can be recognized. The convex portion 13 is white because it includes only the background color region 12, and the convex portion 14 is black because it includes only the mark portion 11. Can be identified. And since the convex part 13 is formed so that the character of the latent image "T" may be expressed by the arrangement shape, for example, the observation direction with respect to the forgery prevention sheet 1 is changed to the lower side in FIG. Then, as shown in FIG. 6A, due to the difference in color between the convex portion 13 and the convex portion 14, it is constituted by a plurality of convex portions 13 in a black background constituted by the plural convex portions 14. The latent image “T” that appears is white and appears to appear. At this time, since the convex portion 13 includes only the background color region 12, the color is white, and since the convex portion 14 includes only the mark portion 11, the color is black. The difference becomes clear and the character of the latent image “T” is easily recognized.

  Further, since the convex portion 13 includes only the background color region 12 and is white, and since the convex portion 14 includes only the mark portion 11 and is black, which direction forms an acute angle with respect to the plane portion 3. Even when observed from above, the latent image “T” formed by the plurality of protrusions 13 appears to appear in white in the black background formed by the plurality of protrusions 14. For example, when the observation direction with respect to the anti-counterfeit sheet 1 is changed to the upper side in FIG. 4, the latent image “T” composed of the plurality of convex portions 13 appears to emerge as shown in FIG. When the observation direction with respect to the anti-counterfeit sheet 1 is changed to the right side in FIG. 4, the latent image “T” formed by the plurality of convex portions 13 emerges as shown in FIG. When the observation direction with respect to the anti-counterfeit sheet 1 is changed to the left side in FIG. 4, a latent image “T” composed of a plurality of convex portions 13 is shown in FIG. 6 (d). I can see it.

  When the anti-counterfeit sheet 1 described above is copied, the information printed in the information printing area 4 of the sheet base material 2 and the mark portions 11 provided in a matrix by printing on the sheet base material 2 are copied. The convex portions 13 and 14 cannot be reproduced. For this reason, even when the observation direction of the copy is changed, the latent image formed by the plurality of convex portions 13 does not appear, and it is possible to perform authenticity determination. Thus, when performing authenticity determination, in the anti-counterfeit sheet 1 of the present embodiment, when the observation direction with respect to the anti-counterfeit sheet 1 is changed from the normal direction of the flat portion 3 of the sheet base material 2 to which direction Even so, since the latent image formed by the plurality of convex portions 13 appears to rise, it is possible to easily determine whether the latent image is true or false without being limited to the observation direction.

(Third embodiment)
7A and 7B are diagrams showing an anti-counterfeit sheet according to a third embodiment of the anti-counterfeit medium of the present invention. FIG. 7A is a diagram showing the entire configuration, and FIG. The figure which shows the detailed structure of the prevention structure 110, (c) is AA 'sectional drawing shown in (b), (d) is BB' sectional drawing shown in (b), (e) is convex. The figure which shows the structure of the part 113, (f) is a figure which shows the structure of the convex part 114. FIG.

  As shown in FIG. 7, the forgery prevention sheet 101 of this embodiment is configured by providing a forgery prevention structure 110 in a partial region of a sheet base material 102 made of paper. The sheet base material 102 has a flat surface portion 103 that becomes the surface of the base material, and an information printing region 104 is provided in a partial region of the flat surface portion 103 and a forgery prevention structure 110 is provided in another region. .

  As shown in FIG. 7B, the anti-counterfeit structure 110 provided on the sheet base material 102 has a background color region 112 made of the same white color as the base color of the flat surface portion 103 of the sheet base material 102 on the background. A plurality of mark portions 111 which are mark coloration regions made of black different from the color region 112 are provided. The plurality of mark portions 111 are arranged in rows and columns on the background color region 112 to form a matrix.

  In the region where the plurality of mark portions 111 are provided in a matrix, a plurality of convex portions 113 serving as first convex portions and a plurality of convex portions 114 serving as second convex portions are formed. As shown in FIGS. 7C to 7F, these convex portions 113 and 114 have the same shape in which the apex portion is removed from the cone, and the sheet base material 102 is embossed and the like from the plane portion 103 side. The side surfaces 113a and 114a are formed by being recessed by about 0.05 to 0.1 mm, and the same surface as the flat portion 103 is the top portions 113b and 114b. The cross-sectional area gradually increases from the tops 113b and 114b in the direction of depression of the sheet substrate 102, and the bottoms of the projections 113 and 114 have a circular shape with a diameter of 0.5 mm or less. .

  The convex portion 113 is configured as a background color region by configuring rows and columns in parallel with the arrangement direction of the plurality of mark portions 111 so as to express the letter “T” that is a latent image by the arrangement shape of the plurality of convex portions 113. 112, each of which is formed between four mark portions 111 provided in a matrix. And since the diameter of the top part 113b and the bottom part is larger than the magnitude | size of the clearance gap formed by the four mark parts 111, as shown in FIG.7 (e), a part of four mark parts 111 is each side surface 113a. The white portion of the background color region 112 in the portion surrounded by the four mark portions 111 is exposed at the top portion 113b. The convex portions 114 are formed in rows and columns in parallel with the arrangement direction of the plurality of mark portions 111 so as to surround the region where the plurality of convex portions 113 are formed in the background color region 112, Each of them is formed on the mark portion 111 provided in a region other than the predetermined region among the plurality of mark portions 111 provided in a matrix. And since the diameter of the top part 114b and the bottom part is smaller than the diameter of the mark part 111, as shown in FIG.7 (f), the top part 114b and the side surface 114a contain the mark part 111. As shown in FIG.

  The anti-counterfeit sheet 101 configured as described above is manufactured in the same manner as that shown in the first embodiment, and then information corresponding to the application is printed on the information printing area 104 of the sheet base material 102. Will be used.

  Below, the effect | action of the forgery prevention sheet 101 mentioned above is demonstrated.

  First, an operation when the forgery prevention sheet 101 shown in FIG. 7 is observed from the front, that is, from the normal direction of the flat portion 103 of the sheet base material 102 will be described.

  FIG. 8 is a diagram for explaining the operation when the anti-counterfeit sheet 101 shown in FIG. 7 is observed from the front, and shows how the anti-counterfeit structure 110 is seen.

  When the anti-counterfeit sheet 101 shown in FIG. 7 is observed from the front, that is, from the normal direction of the flat portion 103, as shown in FIG. 8, in the anti-counterfeit structure 110, the background color region 112 is white. On the other hand, since the plurality of mark portions 111 provided in a matrix shape in the background color region 112 are black, the plurality of mark portions 111 in the matrix shape are recognized. At this time, a plurality of convex portions 113 and 114 are formed on the sheet base material 102. When the anti-counterfeit sheet 101 is observed from the front, the convex portions 113 and 114 are directed from the top side toward the bottom side. Therefore, the convex portions 113 and 114 are hardly recognized, the plurality of mark portions 111 are only recognized in a matrix shape, and the latent image “T” does not appear and appears.

  Next, an operation when the observation direction with respect to the forgery prevention sheet 101 shown in FIG. 7 is changed from the front, that is, the normal direction of the flat portion 103 of the sheet base material 102 will be described.

  FIG. 9 is a diagram for explaining the operation when the observation direction with respect to the anti-counterfeit sheet 101 shown in FIG. 7 is changed from the front. FIG. 9A shows the observation direction with respect to the anti-counterfeit sheet 101. The figure which shows the appearance of the forgery prevention structure 110 at the time of changing to the middle lower side, (b) is the forgery prevention structure 110 at the time of changing the observation direction with respect to the forgery prevention sheet 101 to the upper side in FIG. FIG. 7C is a diagram illustrating how the anti-counterfeit structure 110 is viewed when the observation direction with respect to the anti-counterfeit sheet 101 is changed to the right side in FIG. 7, and FIG. It is a figure which shows the appearance of the forgery prevention structure 110 at the time of changing the observation direction with respect to FIG.

  If the observation direction with respect to the forgery prevention sheet 101 shown in FIG. 7 is changed from the front, the angle formed by the observation direction with respect to the flat portion 103 of the sheet base material 102 becomes an acute angle. Then, the convex portions 113 and 114 formed on the base material 102 are visually recognized from obliquely above, and the convex portions 113 and 114 can be recognized respectively. The convex portion 113 appears gray because it includes the background color region 112 and the mark portion 111, and the convex portion 114 is black because it includes only the mark portion 111. And the convex 114 can be identified. At this time, the side surfaces 113a and 114a of the plurality of convex portions 113 and 114 are hidden by the convex portions 113 and 114 adjacent to the observation direction side of the convex portions 113 and 114, and only the top portions 113b and 114b are hidden. As shown in FIG. 7E, the white portion of the background color region 112 is exposed at the top portion 113b, so that the black portion 114 can be seen. The colors are different, and the convex portion 113 and the convex portion 114 are easily discriminated by the difference in color. And since the convex part 113 is formed so that the character of the latent image "T" may be expressed by the arrangement shape, for example, the observation direction with respect to the forgery prevention sheet 101 is changed to the lower side in FIG. Then, as shown in FIG. 9A, it is constituted by a plurality of convex portions 113 in a black background constituted by the plurality of convex portions 114 due to the difference in color between the convex portions 113 and 114. The latent image “T” that appears will appear to appear gray. At this time, since the convex portion 114 includes only the mark portion 111 and is black, the color difference between the convex portion 113 and the convex portion 114 becomes clear, and the character “T” is easily recognized.

  In addition, since the convex portion 113 includes the background color region 112 and the mark portion 111, it looks gray, and since the convex portion 114 includes only the mark portion 111, the convex portion 113 is black. Even when observed from any direction, the latent image “T” formed by the plurality of protrusions 113 appears to appear in gray on the black background formed by the plurality of protrusions 114. become. For example, when the observation direction with respect to the anti-counterfeit sheet 101 is changed to the upper side in FIG. 7, the latent image “T” formed by the plurality of convex portions 113 appears to emerge as shown in FIG. 9B. When the observation direction with respect to the anti-counterfeit sheet 101 is changed to the right side in FIG. 7, the latent image “T” formed by the plurality of convex portions 113 emerges as shown in FIG. 9C. When the observation direction with respect to the anti-counterfeit sheet 101 is changed to the left side in FIG. 7, a latent image “T” composed of a plurality of convex portions 113 is shown in FIG. 9 (d). I can see it.

  When the anti-counterfeit sheet 101 described above is copied, the information printed in the information printing area 104 of the sheet base material 102 and the mark portion 111 provided in a matrix by printing on the sheet base material 102 are copied. The projections 113 and 114 cannot be reproduced. For this reason, even when the observation direction of the copy is changed, the latent image formed by the plurality of convex portions 113 does not appear, and thus it is possible to perform authenticity determination. When performing the authenticity determination in this way, in the forgery prevention sheet 101 of the present embodiment, when the observation direction with respect to the forgery prevention sheet 101 is changed from the normal direction of the flat portion 103 of the sheet base material 102 to which direction Even so, since the latent image formed by the plurality of convex portions 113 appears to emerge, it is possible to easily perform authenticity determination based on the latent image without being limited to the observation direction.

  In addition, about the height of the convex part 13,14,113,114,213,214 in the embodiment mentioned above, and the dimension of a bottom part, it can set suitably not only what was mentioned above.

  Moreover, in the shape of the convex parts 13, 14, 113, 114, 213, and 214, the dome shape shown in the first and second embodiments and the cone shown in the third embodiment are used. In addition to the shape in which the apex portion is removed from the shape, it may be a cylindrical shape or a conical shape. It is also conceivable that the cross section is rectangular. 1, 4, and 7, at least the convex portions 13, 113, and 213 that express the latent image among the convex portions 13, 14, 113, 114, 213, and 214 are planar portions. When the cross section parallel to 3, 103, 203 is circular and the distance from the center is substantially constant, the latent image that emerges from the convex portions 13, 113, 213 is observed from any direction. The fine shape can be made uniform.

  In addition, the information to be a latent image is not limited to the case where the plurality of convex portions 13, 113, 213 form rows and columns as in the above-described “T”, and the plurality of convex portions 13, 113, 213 are only rows. It may be configured only by configuring only a column. Moreover, it is not limited to one consisting of a single character, but may be one consisting of a plurality of characters or a pattern. It is also conceivable to divide the plurality of convex portions 13, 113, 213 representing the latent image into a plurality of regions and to have characters or the like appear in each of the plurality of regions. In addition, the plurality of convex portions 14, 114, 214 do not completely surround the region where the plurality of convex portions 13, 113, 213 are formed in the background color regions 12, 112, 212, but are partially opened. In this way, the plurality of convex portions 14, 114, 214 may have a shape surrounding the region where the plurality of convex portions 13, 113, 213 are formed.

  In the above-described embodiment, the background color regions 12, 112, 212 and the mark portions 11, 111, 211 are colored white, and the mark portions 11, 111, 212 are white. Although 211 is black, the background color regions 12, 112, and 212 may be black and the mark portions 11, 111, and 211 may be white. The color is not limited to white or black as long as the colors are different from each other.

  In the embodiment described above, the latent image “T” is expressed by the plurality of convex portions 13, 113, and 213, but the latent image “T” is expressed by the arrangement shape of the plurality of convex portions 14, 114, and 214. May be expressed. In this case, when the observation direction with respect to the anti-counterfeit sheets 1, 101, 201 is changed from the front, the latent image “T” appears to appear in the color of the plurality of convex portions 14, 114, 214.

  Further, in the first embodiment described above, the convex portion 213 includes only the mark portion 211, the convex portion 214 includes only the background color region 212, and in the second embodiment, the convex portion 13 is included. Includes only the background color region 12 and the convex portion 14 includes only the mark portion 11. In the third embodiment, the convex portion 113 includes the background color region 112 and the mark portion 111. The portion 114 includes only the mark portion 111, but at least one of the first protrusion and the second protrusion includes only one of the background color region and the mark portion. And what is necessary is just a structure that the other convex part contains the area | region different from the area | region which one convex part contains among a 1st convex part and a 2nd convex part.

  In the embodiment described above, the anti-counterfeit sheet 1, 101, 201 in which the anti-counterfeit structure 10, 110, 210 is provided on the sheet base material 2, 102, 202 made of paper is taken as an example of the anti-counterfeit medium. As described above, the present invention is not limited to such anti-counterfeit sheets 1, 101, 201, but anti-counterfeit as described above on a sheet base material made of a film and a card base material formed by laminating a plurality of resin layers. The present invention can also be applied to a structure provided with the structures 10, 110, and 210.

  Further, in the anti-counterfeit medium of the present invention, in the manufacturing process, the convex portion including only one of the background color region and the mark portion is slightly shifted from the first convex portion and the second convex portion. The color area and the other area of the mark portion may be included, but the background color area provided on the surface of the substrate of the present invention has a color different from the background color area and is on the background color area. A plurality of mark coloration areas provided in a row and / or column configuration and a predetermined region of the background color area formed in parallel with the arrangement direction of the plurality of mark coloration areas. And a plurality of second protrusions formed in rows and / or columns in parallel to the arrangement direction of the plurality of mark coloration regions in a region other than the predetermined region in the background color region. And at least one of the first convex portion and the second convex portion. The convex portion of the first color includes only one of the background color region and the mark color scheme region, and the other convex portion of the first convex portion and the second convex portion includes the one convex portion. The anti-counterfeit medium including different areas includes such an anti-counterfeit medium, and even in that case, it is difficult to distinguish the first convex portion from the second convex portion. When the observation direction with respect to the anti-counterfeit sheet is changed from the front, that is, from the normal direction of the plane portion of the sheet base material, the first and second protrusions are identified, and the same as described above In addition, the latent image formed by the first convex portion and the second convex portion can be raised.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the forgery prevention sheet | seat used as 1st Embodiment of the forgery prevention medium of this invention, (a) is a figure which shows the whole structure, (b) is the detail of the forgery prevention structure shown to (a). (C) is a cross-sectional view taken along the line AA ′ shown in (b), (d) is a cross-sectional view taken along the line BB ′ shown in (b), and (e) is a view of the first convex portion. The figure which shows a structure, (f) is a figure which shows the structure of a 2nd convex part. 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. It is a figure for demonstrating the 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) changes the observation direction with respect to the forgery prevention sheet to the lower side in FIG. The figure which shows the appearance of the forgery prevention structure in the case of going, (b) The figure which shows the appearance of the forgery prevention structure when changing the observation direction with respect to the forgery prevention sheet to the upper side in FIG. ) Is a diagram showing how the anti-counterfeit structure looks when the observation direction with respect to the anti-counterfeit sheet is changed to the right side in FIG. 1, and FIG. It is a figure which shows the appearance of the forgery prevention structure in the case of becoming. It is a figure which shows the forgery prevention sheet | seat used as 2nd Embodiment of the forgery prevention medium of this invention, (a) is a figure which shows the whole structure, (b) is the detail of the forgery prevention structure shown to (a). (C) is a cross-sectional view taken along the line AA ′ shown in (b), (d) is a cross-sectional view taken along the line BB ′ shown in (b), and (e) is a view of the first convex portion. The figure which shows a structure, (f) is a figure which shows the structure of a 2nd convex part. It is a figure for demonstrating an effect | action at the time of observing the forgery prevention sheet | seat shown in FIG. 4 from the front. FIG. 5 is a diagram for explaining the operation when the observation direction with respect to the anti-counterfeit sheet shown in FIG. 4 is changed from the front, and (a) changes the observation direction with respect to the anti-counterfeit sheet to the lower side in FIG. 4. The figure which shows how the anti-counterfeit structure looks when it has been moved, (b) is the figure which shows the appearance of the anti-counterfeit structure when the observation direction with respect to the anti-counterfeit sheet is changed to the upper side in FIG. ) Is a diagram showing how the anti-counterfeit structure looks when the observation direction with respect to the anti-counterfeit sheet is changed to the right side in FIG. 4, and (d) is changing the observation direction with respect to the anti-counterfeit sheet to the left side in FIG. It is a figure which shows the appearance of the forgery prevention structure in the case of becoming. It is a figure which shows the forgery prevention sheet | seat used as 3rd Embodiment of the forgery prevention medium of this invention, (a) is a figure which shows the whole structure, (b) is the detail of the forgery prevention structure shown to (a). (C) is a cross-sectional view taken along the line AA ′ shown in (b), (d) is a cross-sectional view taken along the line BB ′ shown in (b), and (e) is a view of the first convex portion. The figure which shows a structure, (f) is a figure which shows the structure of a 2nd convex part. It is a figure for demonstrating an effect | action at the time of observing the forgery prevention sheet | seat shown in FIG. 7 from the front. FIG. 8 is a diagram for explaining an operation when the observation direction with respect to the anti-counterfeit sheet shown in FIG. 7 is changed from the front, and (a) changes the observation direction with respect to the anti-counterfeit sheet to the lower side in FIG. The figure which shows the appearance of the forgery prevention structure in the case of going, (b) is the figure which shows the appearance of the forgery prevention structure when changing the observation direction with respect to the forgery prevention sheet to the upper side in FIG. ) Is a diagram showing how the anti-counterfeit structure is viewed when the observation direction with respect to the anti-counterfeit sheet is changed to the right side in FIG. 7, and FIG. It is a figure which shows the appearance of the forgery prevention structure in the case of becoming.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,101,201 Anti-counterfeit sheet 2,102,202 Sheet base material 3,103,203 Plane part 4,104,204 Information printing area 10,110,210 Anti-counterfeit structure 11,111,211 Mark part 12,112, 212 background color region 13, 14, 113, 114, 213, 214 convex 113a, 114a side 113b, 114b top

Claims (1)

A background color region provided on the substrate surface;
A plurality of mark coloration areas provided with colors different from the background color area, and arranged in rows and / or columns on the background color area;
A plurality of first protrusions formed by configuring rows and / or columns in parallel with the arrangement direction of the plurality of mark coloration regions in the predetermined region of the background color region;
A plurality of second convex portions formed by configuring rows and / or columns in parallel to the arrangement direction of the plurality of mark coloration regions in an area other than the predetermined area in the background color area;
At least one of the first convex portion and the second convex portion includes only one of the background color region and the mark coloration region, and the first convex portion The forgery prevention medium in which the other convex portion of the second convex portion includes a region different from a region included in the one convex portion.

Images