JP2006110820A - Image forming body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image forming body applied to a valuable item that needs to be prevented from forgery and tampering such as banknotes, passports, securities, cards, product tags, and stamps.
A first perforation group is formed on a first base material and a second perforation group is formed on a second base material, and the first perforation group and the second perforation group are each a latent image. Although the image cannot be visually confirmed, the first perforation group and the second perforation group are overlapped with each other in a predetermined positional relationship and observed with transmitted light. A perforation in which the perforations of the two perforations group do not overlap each other serves as a light blocking portion, and a perforation where the perforations in the first perforation group overlaps with the perforations in the second perforation group serves as a translucent portion, and is formed by the translucent portion. This is an image forming body formed by visually recognizing the latent image.
[Selection] Figure 6

Description

The present invention relates to an image forming body applied to a valuable item that needs to be prevented from forgery and tampering such as banknotes, passports, securities, cards, product tags, and stamps.

Guarantees and maintains the value of valuables such as banknotes, passports, securities, cards, stamps, product tags, tickets such as tickets and commuter passes, coupon tickets for toll roads, various tickets, gift certificates, etc. For this reason, anti-counterfeiting and anti-tampering techniques are applied. To prevent this, it is possible to visually recognize the latent image area by forming a number or the like on the base material of these valuables with a plurality of perforations, or observing the base material having a plurality of perforations at an angle. A technique for performing discrimination is also known. In addition, there is known a technique in which a code becomes apparent by superimposing two or more printed substrates.

Used in Swiss banknotes, numbers are represented by perforations. In addition, the hole diameter is characterized in that the pattern formed by the naked eye cannot be seen in the reflective state, and the safety mark is composed of a plurality of holes that form a pattern on the document surface that is visible in the transparent state. A safekeeping document having a safety mark for preventing the above has been disclosed (see Patent Document 1).
JP 2000-501036 A (2nd page, Fig. 1-2)

A true / false discrimination formed body having a base material and having a large number of fine perforations that are formed on the base material and form a background portion and an information portion having a specific pattern, which are difficult to see. There is disclosed a true / false discrimination formed body characterized in that the perforations to be formed and the perforations to form the information section are formed so that at least one of the shape, size and arrangement direction of the perforations is different. (See Patent Document 2).
Japanese Patent No. 3385461 (2nd page, Fig. 1-2)

When a tag having a tally function using a visual decryption type encryption is attached to a product or its package on a base material with a tally function provided with encrypted image data, when the purchaser purchases the product, Use a tag that is characterized by the fact that the code is decrypted by removing the tag and overlapping it with the tag that was obtained at the same time or before purchase or distributed separately, and according to the contents indicated A product sales method is disclosed (see Patent Document 3).
JP 2002-372914 A (page 1-3, FIG. 1-3)

However, in Japanese translations of PCT publication No. 2000-501036 and Japanese Patent No. 3385461, numbers and the like are formed by drilling the base material, and the shape of some of the perforations is different from the base material. Since the perforations that are included are not complicated and information is easily analyzed, there is a risk of duplication. For this reason, it was necessary to complicate the arrangement of the perforations and prevent forgery. Furthermore, in recent years, scanners, printers, and the like have become widespread in ordinary households, and anyone can easily duplicate the technique disclosed in Japanese Patent Laid-Open No. 2002-372914. Moreover, it is necessary to limit a base material to a transparent thing and a semi-transparent thing, and it was not able to form with an opaque base material. For these reasons, an element having a higher effect of preventing forgery has been demanded.

In view of the above, the present invention is intended to solve the above-described problems. The first perforation group and the second perforation group are formed by perforation without forming on an opaque base material by printing. The first perforation group and the second perforation group cannot visually confirm the latent image region alone, but the first perforation group and the second perforation group are overlapped with each other in a predetermined positional relationship with the transmitted light. By observing, the latent image area becomes apparent. Therefore, since the forger cannot know whether or not the latent image area is embedded, it is excellent in the authenticity discrimination effect, and since it is formed by a fine perforation group, it cannot be copied by a scanner, a printer, or the like. . The present invention proposes the image forming body described above.

In the present invention, a first perforation group is formed on a first base and a second perforation group is formed on a second base, and the first base and the second base are in a predetermined positional relationship. In the image forming body in which the latent image region is visually recognized by overlapping and observing with transmitted light, the first base material and the second base material have a latent image region and a background region, The latent image area and the background area are perforated so that when the first base material and the second base material are overlapped with each other in a predetermined positional relationship, the light transmission density of the overlapped perforation group is different. The image forming body is characterized in that the first perforation group and the second perforation group are formed with perforations that do not overlap so that the latent image region is not visually recognized. .

In the present invention, a first perforation group and a second perforation group are formed on a base material, and the first perforation group and the second perforation group are formed on the basis of a predetermined folding position of the base material. In the image forming body in which the latent image region is visually recognized by overlapping and observing with transmitted light, the first perforation group and the second perforation group have a latent image region and a background region, The latent image area and the background area have a light transmission density of the overlapping perforation group when the first perforation group and the second perforation group are overlapped with each other with the base material as a reference bending position. The first perforation group and the second perforation group are formed with perforations that do not overlap so that the latent image region is not visually recognized. An image forming body.

Further, according to the present invention, the first perforation group is formed on a page in which the first perforation group and the first perforation group are not formed on a specific page of the booklet medium, and the first perforation group is formed. In an image forming body in which a latent image region is visually recognized by superimposing a page and a page on which the second perforation group is formed with a predetermined positional relationship and observing with transmitted light, the first perforation group and The second perforation group has a latent image area and a background area, and the latent image area and the background area are formed with a page on which the first perforation group is formed and the second perforation group. When the pages are overlapped with each other in a predetermined positional relationship, the perforations are formed so that the transmission density of light of the overlapping perforations is different, and the first perforation group and the second perforation group are independent. Then, the non-overlapping perforations are formed so that the latent image area is not visually recognized. An image forming body, wherein the door.

In the present invention, the first perforation group and the second perforation group may include a plurality of perforation units each having a unit of p (p is an arbitrary natural number) × q (q is an integer of 2 or more). An image forming body formed in a matrix and having perforations formed in the matrix.

In the present invention, the perforation unit of the unit of p (p is an arbitrary natural number) × q (q is an integer of 2 or more) is a perforation unit of 2 × 2 (P11, P12, P21, P22), Or 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33) units, 2 × 2 (P11, P12, P21, P22) units In the case of 1 to 3 perforations are formed in one perforation unit, in the case of a perforation unit of 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33) units, An image forming body in which 1 to 8 perforations are formed in one perforation unit.

The present invention is the image forming body in which the size of the perforations is 40 μm to 1,000 μm.

The first perforation group and the second perforation group are formed by perforation without forming on the opaque substrate by printing, and the first perforation group and the second perforation group are independently confirmed and the latent image area is visually confirmed. Although not possible, the latent image region becomes apparent by superimposing the first perforation group and the second perforation group in a predetermined positional relationship and observing with transmitted light. Since the forger does not know whether or not the latent image area is embedded, it is excellent in the authenticity discrimination effect. Further, since it is formed by a fine perforation group, it cannot be copied by a scanner, printer or the like. In addition, since it is formed by fine perforations, it is generally difficult to manufacture, and thus has an anti-duplication effect. Therefore, it can be applied to valuables such as banknotes, passports, securities, cards, stamps, merchandise tags, pass tickets such as tickets and commuter passes, toll tickets such as toll roads, various tickets, and gift certificates.

In addition, when trying to counterfeit, duplicate, or tamper with this device, it is necessary to faithfully reproduce the positional relationship between the first perforation group and the second perforation group. It is very difficult to reproduce even the arrangement. Further, the first perforation group and the second perforation group can be formed in a form provided in a symmetrical region of the same base material, a form provided in different pages of a booklet, etc., and anyone can easily determine authenticity. Is possible.

The best mode for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to the best mode for carrying out the invention described below, and includes various other embodiments within the scope of the technical idea described in the scope of claims.

FIG. 1 shows a matrix (3) composed of perforating units (2a). The perforation unit (2a) is not provided by printing or the like in the perforation group of the present invention, and is shown for describing the arrangement position of the perforations. Therefore, it is not actually visually recognized with the naked eye. Perforation units (2a) in units of 2 × 2 (P11, P12, P21, P22) are arranged on the substrate (1) 8 times in the X direction and 8 times in the Y direction, and arranged in a matrix (3). . The perforation units (2a) arranged in a matrix (3) are divided into a first zone (4a), a second zone (4b), a third zone (4c) and a fourth zone (4d). . The first area (4a) becomes the first latent image area, and the second area (4b) becomes the first background area. The first latent image area represents an English character (L). The third area (4c) becomes the second latent image area, and the fourth area (4d) becomes the second background area. The second latent image area represents an English character (T).

FIG. 2A shows the first perforation group (A1). As shown in FIG. 2 (a), the first perforation group (A1) has a first area (4a) that becomes a first latent image region (L-shaped) in the matrix shape (3) shown in FIG. ), Perforation (5) with a size of 40 μm to 1,000 μm, but 1 to 3 perforations are formed in one perforation unit of 2 × 2 (P11, P12, P21, P22) units. The second area (4b), which is the first background region, has a perforation (5) of 40 μm to 1,000 μm in one per unit of 2 × 2 (P11, P12, P21, P22). Up to three perforations are formed. Further, in the third area (4c) serving as the second latent image region (T-shaped), the perforation (5) having a size of 40 μm to 1,000 μm is 2 × 2 (P11, P12, P21, P22). 1 to 3 perforations are formed in one perforation unit, and similarly, the fourth area (4d) serving as the second background region is a perforation (5) having a size of 40 μm to 1,000 μm. However, 1 to 3 perforations are formed in one perforation unit of 2 × 2 (P11, P12, P21, P22) units. Usually, the first area (4a), which is the first latent image area, and the second area (4b), which is the first background area, are visually recognized by viewing with the naked eye with transmitted light or reflected light. Can not do it. Similarly, the third area (4c), which is the second latent image area, and the fourth area (4d), which is the second background area, cannot be viewed separately. This is because the size of the perforations is as fine as 40 μm to 1,000 μm, and the number of perforations formed in one perforation unit in the first area (4a) and the second area (4b) is 1 to 1. Since the number of perforations is almost the same, each perforation unit is less likely to be bright and dark, and the density is almost uniform throughout.

FIG. 2 (b) shows the second perforation group (B1). The second perforation group (B1) shown in FIG. 2 (b) includes a first area (4a) that becomes the first latent image region (L-shape) shown in FIG. 2 (a), and a first background. This is for discriminating the second area (4b) as an area. As shown in FIG. 2 (b), the second perforation group (B1) divides the first area (4a), which is the first latent image region, in the matrix (3) shown in FIG. A first area (6a) and a second area (6b) for dividing the second area (4b) as the first background area. In the first zone (6a), a perforation (5) with a size of 40 μm to 1,000 μm is formed by 1 to 3 perforations in a perforation unit of 2 × 2 (P11, P12, P21, P22) units. Similarly, the second zone (6b) has 40 μm to 1,000 μm perforations (5) from 1 to 1 in a perforation unit of 2 × 2 (P11, P12, P21, P22) units. Three perforations are formed.

The registration mark position (P1) of the first perforation group (A1) shown in FIG. 2 (a) and the registration mark position (P2) of the second perforation group (B1) are superimposed on each other to transmit light. 3, as shown in FIG. 3, the perforation (5) of the first area (4 a), which is the first latent image area of the first perforation group, and the second perforation group (B 1). The perforation (5) of the first area (6a) for distinguishing the first area (4a), which is the first latent image area, is a light transmitting portion because the perforation (5) is made at the same position. , Perforations (5) in the second zone (4b) which is the first background region of the first perforation group and second zones (4b) as the first background region of the second perforation group (B1) Since the perforations (5) in the second area (6b) for separating) are perforated at different positions, they are light blocking portions. Therefore, the latent image region (L) formed by the light transmission part and the light blocking part is visually recognized.

FIG. 4 (a) shows the same first perforation group (A1) as FIG. 2 (a). FIG. 4B shows the third perforation group (B2). The third perforation group (B2) shown in FIG. 4 (b) includes a third area (4c) that becomes the second latent image region (T-shape) shown in FIG. 4 (a), and a second background. This is for discriminating the fourth area (4d) as the region. As shown in FIG. 4B, the third perforation group (B2) divides the third area (4c), which is the second latent image region, in the matrix shape (3) shown in FIG. And a fourth area (6d) for dividing the fourth area (4d) as the second background area. The third zone (6c) has 40 to 1,000 μm perforations (5), but 1 to 3 perforations in one per unit of 2 × 2 (P11, P12, P21, P22) Similarly, in the fourth zone (6c), 40 μm to 1,000 μm perforations (5) are 1 to 1 in a perforation unit of 2 × 2 (P11, P12, P21, P22) units. Three perforations are formed.

The registration mark position (P1) of the first perforation group (A1) shown in FIG. 4A and the registration mark position (P2) of the third perforation group (B2) are superimposed on each other to transmit the transmitted light. As shown in FIG. 5, the third perforation (5c) in the third area (4c), which is the first latent image region of the first perforation group, and the third perforation group (B2), as shown in FIG. The perforation (5) of the third area (6c) for dividing the third area (4c), which is the second latent image area, is a light transmission part because the perforation (5) is performed at the same position. , A perforation (5) in the fourth zone (4d) which is the second background region of the first perforation group and a fourth zone (4d) as the second background region of the third perforation group (B2). Since the perforations (5) in the fourth area (6d) for separating the) are perforated at different positions, they are light blocking portions. Therefore, the latent image region (T) formed by the light transmitting portion and the light blocking portion is visually recognized.

That is, as shown in FIG. 6, when the first perforation group (A1) is overlapped with the second perforation group (B1) and observed with transmitted light, the latent image region (L) is visually recognized, and the third This is an image forming body in which the latent image region (T) is visually recognized when observed with transmitted light superimposed on the perforated group (B2).

Next, an example in which the perforation unit is 3 × 3 is shown. FIG. 7 shows a matrix (3) with a perforated unit (2b). The perforation unit (2b) is not provided by printing or the like in the perforation group of the present invention, but is shown for describing the arrangement position of the perforations. Therefore, it is not actually visually recognized with the naked eye. The base unit (1) has a perforation unit (2b) of 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33) units 6 times in the X direction and 6 times in the Y direction. They are arranged in a matrix (3). As shown in FIG. 8, the perforation units (2b) arranged in a matrix (3) include a first area (4a), a second area (4b), a third area (4c), a fourth area ( 4d), a fifth area (4e), and a sixth area (4f). The first area (4a) becomes the first latent image area, and the second area (4b) becomes the first background area. The first latent image area represents an English character (L). The third area (4c) becomes the second latent image area, and the fourth area (4d) becomes the second background area. The second latent image area represents an English character (T). The fifth area (4e) is a transmission image, and the sixth area (4f) is a background. The image represents a design (cross).

FIG. 9 shows the first perforation group (A2). As shown in FIG. 9, the first perforation group (A2) includes a fifth area (4e) that becomes a transmission image (cross) in the matrix shape (3) shown in FIG. The number of perforations in one perforation unit in the unit of 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33) of the area (4f) is the fifth area (4e)> 6th It is necessary to have the relationship of the area (4f). The fifth area (4e) is a unit of 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33) with a perforation (5) of 40 μm to 1,000 μm in size. 2 to 8 perforations are formed in one perforation unit, and similarly, the sixth area (4f) has 40 to 1000 μm perforations (5), 3 × 3 (P11, P12, P13, P21, 1 to 7 perforations are formed in one perforation unit of the unit of P22, P23, P31, P32, P33). The first area (4a), which is the first latent image region (L-shaped), has a perforation (5) with a size of 40 μm to 1,000 μm, 3 × 3 (P11, P12, P13, P21, P22, 1 to 8 perforations are formed in one perforation unit of the unit of P23, P31, P32, P33). Similarly, the second area (4b) serving as the first background region is 40 μm to 1,000 μm. 1 to 8 perforations (5) are formed in one perforation unit of 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33). Further, in the third area (4c) serving as the second latent image area (T-shaped), the perforation (5) having a size of 40 μm to 1,000 μm is formed by 3 × 3 (P11, P12, P13, P21, 1 to 8 perforations are formed in one perforation unit of the unit of P22, P23, P31, P32, P33). Similarly, the fourth area (4d) serving as the second background region is 40 μm to 1 1 to 8 perforations formed in a perforation unit of 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33) units Is done. As shown in FIG. 10, when the first perforation group (A2) is observed with transmitted light or reflected light with the naked eye, a fifth area (4e) that is a transmission image (cross) and a sixth that is a background are shown. This area (4f) can be visually recognized by dividing it. In particular, when viewed with transmitted light, it is clearly visible, and this is because the fifth area (4e) that becomes a transmitted image (cross) is 3 × 3 (P11, P12, P13, P21, P22, P23, P31, 2 to 8 perforations are formed in one perforation unit of the unit of P32, P33). Similarly, the background sixth area (4f) is 3 × 3 (P11, P12, P13, P21, P22). , P23, P31, P32, P33), 1 to 7 perforations are formed in one perforation unit. Since the number of perforations in the perforation unit is larger in the fifth area (4e) than in the sixth area (4f), the amount of transmitted light obtained from the perforations is different. The fifth area (4e) having a large number of perforations is visually recognized as bright, and the sixth area (4f) having a smaller number of perforations than the fifth area (4e) is visually recognized as dark. Therefore, a difference in brightness occurs, and a transparent image (cross) is visually recognized. However, when it is desired to visually recognize the latent image dark, the background becomes the latent image, and the latent image becomes the background.

Also, the first area (4a), which is the first latent image area, and the second area (4b), which is the first background area, are usually separated when observed with transmitted or reflected light with the naked eye. Cannot be seen. Similarly, the third area (4c), which is the second latent image area, and the fourth area (4d), which is the second background area, cannot be viewed separately. This is because the fifth area (4e) and the sixth area (4f) are visually recognized separately, and the first area (4a) and the second area (4b) do not have a difference in brightness. .

FIG. 11A shows the same first perforation group (A2) as FIG. FIG. 11B shows the second perforation group (B3). The second perforation group (B3) shown in FIG. 11 (b) includes a first area (4a) that becomes the first latent image region (L-shaped) in FIG. 11 (a), a first background region, This is for discriminating the second area (4b). As shown in FIG. 11 (b), the second perforation group (B3) divides the first area (4a), which is the first latent image area, in the matrix (3) shown in FIG. A first area (6a) and a second area (6b) for dividing the second area (4b) as the first background area. In the first area (6a), a perforation (5) having a size of 40 μm to 1,000 μm is one unit of 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33). 1 to 8 perforations are formed in the perforation unit, and similarly, the second zone (6b) has 40 to 1,000 μm perforations (5) 3 × 3 (P11, P12, P13, P21, 1 to 8 perforations are formed in one perforation unit of P22, P23, P31, P32, P33).

The registration mark position (P1) of the first perforation group (A2) shown in FIG. 11 (a) and the registration mark position (P2) of the second perforation group (B3) are superimposed on each other to transmit the transmitted light. 12, as shown in FIG. 12, the perforation (5) of the first area (4 a) which is the first latent image area of the first perforation group and the second perforation group (B 3). The perforation (5) of the first area (6a) for distinguishing the first area (4a), which is the first latent image area, is a light transmitting portion because the perforation (5) is made at the same position. , Perforations (5) in the second zone (4b) which is the first background region of the first perforation group and second zones (4b) as the first background region of the second perforation group (B3) Since the perforations (5) in the second area (6b) for separating) are perforated at different positions, they are light blocking portions. Therefore, the latent image region (L) formed by the light transmission part and the light blocking part is visually recognized.

FIG. 13A shows the same first perforation group (A2) as FIG. 9 and FIG. 11A. FIG. 13B shows a third perforation group (B4). The third perforation group (B4) shown in FIG. 13 (b) includes a third area (4c) serving as a second latent image region (T-shaped) in FIG. 13 (a), a second background region, This is for discriminating the fourth area (4d). As shown in FIG. 13 (b), the third perforation group (B4) divides the third area (4c), which is the second latent image region, in the matrix (3) shown in FIG. And a fourth area (6d) for dividing the fourth area (4d) as the second background area. In the third area (6c), a perforation (5) having a size of 40 μm to 1,000 μm is one unit of 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33). 1 to 8 perforations are formed in the perforation unit, and similarly, the fourth zone (6c) has 40 to 1,000 μm perforations (5) 3 × 3 (P11, P12, P13, P21, 1 to 8 perforations are formed in one perforation unit of P22, P23, P31, P32, P33).

The registration mark position (P1) of the first perforation group (A2) shown in FIG. 13 (a) and the registration mark position (P2) of the third perforation group (B4) are superimposed on each other to transmit the transmitted light. 14, as shown in FIG. 14, the third area (4 c), which is the first latent image area of the first perforation group (5), and the third perforation group (B 4). The perforation (5) of the third area (6c) for dividing the third area (4c), which is the second latent image area, is a light transmission part because the perforation (5) is performed at the same position. , The perforation (5) of the fourth area (4d), which is the second background area of the first perforation group, and the fourth area (4d), the second background area of the third perforation group (B4). Since the perforations (5) in the fourth area (6d) for separating the) are perforated at different positions, they are light blocking portions. Therefore, the latent image region (T) formed by the light transmitting portion and the light blocking portion is visually recognized.

That is, as shown in FIG. 15, when the first perforation group (A2) is overlapped with the second perforation group (B3) and observed with transmitted light, the latent image region (L) is visually recognized, The latent image region (T) is visually recognized when observed with transmitted light superimposed on the perforated group (B4). When the perforated groups are observed with transmitted light or reflected light without overlapping each other, the transmitted image (cross) can be visually recognized.

In the above description, a drilling unit of 2 × 2 (P11, P12, P21, P22) units or a drilling unit of 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33) units Although described, the present invention is not limited to this, and as shown in FIG. 16, a matrix-like perforation unit of p (p is an arbitrary natural number) × q (q is an integer of 2 or more) units ( 3) can be formed. In the perforation unit of p × q, 1 to (p × q−1) perforations need to be formed at arbitrary positions. Preferably, 2 × 2 (P11, P12, P21, P22) units perforation unit or 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33) units perforation unit In the case of a perforation unit of 2 × 2 (P11, P12, P21, P22), 1 to 3 perforations are formed in one perforation unit, and 3 × 3 (P11, P12, P13, In the case of a perforation unit in units of P21, P22, P23, P31, P32, P33), 1 to 8 perforations must be formed in one perforation unit. When the minimum unit is 3 × 3 or more, the visibility of the latent image area is deteriorated.

In the above description, the perforation unit (2b) in units of 2 × 2 (P11, P12, P21, P22) is multiplied by 8 times in the X direction and 8 times in the Y direction, and 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, and P33) perforation units (2b) are arranged 6 times in the X direction and 6 times in the Y direction and arranged in a matrix (3). Without limitation, it is possible to multiply by r (r is a positive integer) times in the X direction and by s (s is a positive integer) times in the Y direction. Moreover, although it arrange | positions regularly at the matrix form (3) in the X direction and the Y direction, as shown to Fig.17 (a, b), you may give deviation (t).

The substrate used in the present invention is not particularly limited, and paper sheets, translucent films, plastics, aluminum foils, metal foils, and the like are used. Moreover, the forgery prevention effect improves by using a hologram. The thickness of the substrate is preferably from about 0.1 mm to about 1.0 mm. An opaque base material has the best visibility of the latent image area.

The shape of each perforation group is preferably formed in the same shape, and the shape is not particularly limited, and can be formed in at least one of a circle, an ellipse, a polygon, and a special shape. By using polygonal or specially shaped perforations, the anti-counterfeiting effect is improved because it is difficult to be duplicated. In addition, the anti-counterfeiting effect is improved by forming with at least one shape (truncated cone) having the same diameter of the perforation and a smaller diameter of the perforation along the depth direction. Further, it can be formed in at least one of a right angle and a specific angle with respect to the substrate. When it is formed obliquely at a specific angle, it becomes difficult to replicate, so the forgery prevention effect is improved. When the oblique angle is deepened at a specific angle, the observation angle at which the latent image is visually recognized becomes somewhat deeper. The perforation can be formed by a laser processing machine, and the type of laser is preferably a YAG laser, a carbon dioxide gas laser, or an excimer laser. The diameter of the perforations in the perforated group needs to be formed in the range of 40 μm to 1,000 μm. The size of the perforations is related to the thickness and thickness of the substrate and the resolution and number of latent image areas to be expressed. Naturally, when a high-resolution latent image area image is expressed in a specific area, a hole having a diameter as small as possible is necessary. If the diameter of the perforations is smaller than 40 μm, it will be difficult to produce, and if the diameter is larger than 1,000 μm, the base material will be easily cut, causing the durability to be inferior. Furthermore, the latent image region image that appears when the perforation group and the perforation group are overlapped becomes rough. It is preferable that the perforation pitch of the perforation group is equal in the X (lateral) direction and / or the Y (longitudinal) direction.

In the above description, each perforation group is formed of a different base material. However, each perforation group is given to a specific region of the same base material, for example, the first perforation group and the second perforation group are symmetrical. It is also possible to give it to the position. That is, as shown in FIG. 18, the first perforation group (C) described above is formed in a specific region, and the second perforation group (D) described above is formed at a symmetrical position with respect to the first perforation group (C). Form. To determine authenticity, the first perforation group (C) and the second perforation group (D) are overlapped with each other based on a predetermined bending position (W) of the base material and observed with transmitted light. That is, the first perforation group (C) and the second perforation group (D) are formed at symmetrical positions with respect to the bending position (W). Further, it can be formed on a booklet medium. It is also possible to give the first perforation group to a page with a booklet and give the second perforation group in addition to the page on which the first perforation group is formed. That is, as shown in FIG. 19A, the first perforation group (C) described above is formed on a certain page, and the second perforation group (D) is formed on the other pages. To determine authenticity, the first perforated group (C) and the second perforated group (D) are overlapped and observed with transmitted light. Further, as shown in FIG. 19B, the first perforation group (C) described above is formed on a certain page, and the second perforation group (D1) described above is formed on the other pages. A perforation group (D2) is formed. For authenticity determination, the first perforation group (C) and the second perforation group (D1) or the third perforation group (D2) are overlapped and observed with transmitted light.

Either one of the first perforation group and the second perforation group is not formed with a hole, but a pixel group formed with a non-printing area on a transparent substrate is formed, and the pixel group is formed by perforation. It may be like that. In this case, for example, the first perforation group is formed by perforation, the second pixel group is formed by printing on a transparent substrate, and the first perforation group and the second pixel group are overlapped with each other in a predetermined positional relationship. The latent image area is visually recognized by observing with transmitted light together.

The shape of the latent image area of the present invention is not particularly limited, and code information such as letters, numbers, symbols, symbols, and two-dimensional barcodes can be formed. Further, the perforation group can be formed by code information such as letters, numbers, symbols, designs, and two-dimensional barcodes.

In the above description, the first perforation group, the second perforation group, the third perforation group, and three base materials are described, but the present invention is not limited to this, and n base materials. It is also possible to form a perforation group and to make different latent image areas visible for each base material to be overlaid.

EXAMPLES Hereinafter, although this invention is demonstrated further in detail using an Example, the content of this invention is not limited to the range of these Examples.

Example 1
Prepare a sheet of paper with a thickness of about 0.15 mm, multiply the perforation units (P11, P21, P12, P22) by 8 times in the X and Y directions, respectively, and perforate with a diameter of 2 mm and a diameter of 0.1 mm Was formed at a constant pitch of 0.8 mm. One to three perforations were provided in the perforation unit to form a perforation group. The perforation group is divided into a first area, a second area, a third area, and a fourth area. The first area is a first latent image area, and the second area is a first background area. The third area was the second latent image area, the fourth area was the second background area, and the first perforation group (A3) was produced.

Next, prepare two sheets of paper with a thickness of about 0.15 mm, multiply the punching unit (P11, P21, P12, P22) by 8 times in the X and Y directions on the first paper, and the punching unit is 2 × 2 and 0.1 mm diameter perforations were formed at a constant pitch of 0.8 mm. One to three perforations were provided in the perforation unit to form a perforation group. The perforation group is divided into a first area for discrimination for discriminating the first area of the first perforation group (A3) and a second area for discrimination for discriminating the second area. . The perforation in the first area and the perforation in the first area for discrimination are perforated at the same position, and the perforation in the second area and the perforation in the second area for discrimination are perforated at different positions. The 2nd perforation group (B5) was produced. Also, the punching unit (P11, P21, P12, P22) is multiplied by 8 in the X and Y directions respectively on the second paper, and the punching unit is 2 × 2 and drilling with a diameter of 0.1 mm is a constant 0.8 mm. Formed with pitch. One to three perforations were provided in the perforation unit to form a perforation group. The perforation group is divided into a third area for discrimination for discriminating the third area of the first perforation group (A3) and a fourth area for discrimination for discriminating the fourth area. . The third area perforation and the third area perforation for discrimination are perforated at the same position, and the fourth perforation and the fourth area perforation for discrimination are perforated at different positions. A third perforation group (B6) was prepared.

The first perforation group (A3) alone cannot see information. However, as shown in FIG. 20, the first perforation group (A3) and the second perforation group (B5) are overlapped at a predetermined position and transmitted. When observed with light, the first latent image region was visible. The first perforation group (A3) alone cannot recognize information, but the first perforation group (A3) and the third perforation group (B6) are superposed at a predetermined position and observed with transmitted light. The second latent image area was visible.

It is a figure which shows the matrix form (3) comprised by the piercing | punching unit (2a). It is a figure which shows a 1st drilling group (A1) and a 2nd drilling group (B1). It is a figure at the time of superimposing the 1st perforation group (A1) and the 2nd perforation group (B1), and observing with transmitted light. It is a figure which shows the 1st drilling group (A1) and the 3rd drilling group (B2). It is a figure at the time of superimposing the 1st perforation group (A1) and the 3rd perforation group (B2), and observing with transmitted light. It is a figure which shows the relationship with a 1st perforation group (A1), a 2nd perforation group (B1), and a 3rd perforation group (B2). It is a figure which shows the matrix form (3) comprised by the perforation unit (2b). 1st area (4a) in the matrix form (3), 2nd area (4b), 3rd area (4c), 4th area (4d), 5th area (4e), 6th It is a figure which shows an area (4f). It is a figure which shows a 1st perforation group (A2). It is a figure at the time of observing a 1st perforation group (A2) with transmitted light or reflected light with the naked eye. It is a figure which shows a 1st drilling group (A2) and a 2nd drilling group (B3). It is a figure at the time of superimposing the 1st perforation group (A2) and the 2nd perforation group (B3), and observing with transmitted light. It is a figure which shows a 1st drilling group (A2) and a 3rd drilling group (B4). It is a figure at the time of superimposing the 1st perforation group (A2) and the 3rd perforation group (B4), and observing with transmitted light. It is a figure which shows the relationship with a 1st drilling group (A2), a 2nd drilling group (B3), and a 3rd drilling group (B4). It is a figure which shows the example whose punching unit is p (p is arbitrary natural numbers) * q (q is an integer greater than or equal to 2). It is a figure at the time of giving a shift | offset | difference (t) to a punching unit and forming a matrix form (3). When the second perforation group is formed in a symmetric position with respect to a predetermined bending position (W) of the base material on which the first perforation group is formed, other than the region where the first perforation group is formed FIG. It is a figure which shows the case of a booklet form. It is a figure which shows the relationship with a 1st drilling group (A3), a 2nd drilling group (B5), and a 3rd drilling group (B6).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base material 2a Perforation unit 3 Matrix-like 4a 1st area 4b 2nd area 4c 3rd area 4d 4th area 4e 5th area 4f 6th area 5 Perforation 6a 1st area 6b 2nd Zone 6c Third Zone 6d Fourth Zone A1, A2, A3 First Hole Group B1, B3, B5 Second Hole Group B2, B4, B6 Third Hole Group C First Hole Group D, D1 Second drilling group D2 Third drilling group P1, P2 Registration mark position t Deviation W Predetermined folding position

Claims (6)

A first perforation group is formed on the first base material, and a second perforation group is formed on the second base material, and the first base material and the second base material are superposed and transmitted in a predetermined positional relationship. In the image forming body in which the latent image area is visually recognized by observing with light,
The first substrate and the second substrate have a latent image region and a background region,
The latent image area and the background area are perforated so that when the first base material and the second base material are overlapped with each other in a predetermined positional relationship, the light transmission density of the overlapped perforation group is different. And the first perforation group and the second perforation group are each formed with perforations that do not overlap so that the latent image region is not visually recognized. A first perforation group and a second perforation group are formed on a base material, and the first perforation group and the second perforation group are superimposed on the base material with a predetermined bending position as a reference, and transmitted light is transmitted. In the image forming body in which the latent image area is visually recognized by observing,
The first perforation group and the second perforation group have a latent image region and a background region,
The latent image region and the background region have a light transmission density of the overlapped perforation group when the first perforation group and the second perforation group are overlapped with each other based on a predetermined bending position of the base material. That the first perforation group and the second perforation group are formed with perforations that do not overlap so that the latent image area is not visually recognized. A featured image forming body. A second perforation group is formed on a page in which the first perforation group and the first perforation group are not formed on a specific page of the booklet medium, and the page on which the first perforation group is formed and the second In the image forming body in which the latent image region is visually recognized by superimposing the pages on which the perforated group is formed in a predetermined positional relationship and observing with the transmitted light,
The first perforation group and the second perforation group have a latent image area and a background area,
The latent image area and the background area have a light beam of the overlapped perforation group when the page on which the first perforation group is formed and the page on which the second perforation group is formed are overlapped with each other in a predetermined positional relationship. The first perforation group and the second perforation group are formed with perforations that do not overlap so that the latent image area is not visually recognized. An image forming body characterized by comprising: The first perforation group and the second perforation group are formed in a matrix by arranging a plurality of perforation units of units of p (p is an arbitrary natural number) × q (q is an integer of 2 or more), The image forming body according to claim 1, 2 or 3, wherein perforations are formed in the matrix. The perforation unit of the unit of p (p is an arbitrary natural number) × q (q is an integer of 2 or more) is a perforation unit of 2 × 2 (P11, P12, P21, P22), or 3 × 3 ( P11, P12, P13, P21, P22, P23, P31, P32, P33) units, in the case of 2 × 2 (P11, P12, P21, P22) units, 1 to 3 drillings are formed in one drilling unit, 1 to 8 drillings in the case of 3 × 3 (P11, P12, P13, P21, P22, P23, P31, P32, P33) units The image forming body according to claim 1, 2, 3, or 4 formed in one perforation unit. The image forming body according to claim 1, 2, 3, 4, or 5, wherein the size of the perforations is 40 µm to 1,000 µm.

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