JPH11277956A - Image formed body, and implement and method for confirmation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image formed body and an implement and a method for confirmation which enable prevention of forgery and hold high security. SOLUTION: An image formed body 3 has a hologram layer. Although the hologram layer 5 records a hologram image and a hidden pattern, the presence of the hidden pattern is not discerned, while the hologram image is shown, when the image formed body 3 is seen as a single body. When a confirming pattern formed body 1 is laid over the image formed body 3, however, a moire pattern can be confirmed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an image forming body, a checking tool, and a checking method.

[0002]

2. Description of the Related Art Conventionally, in order to suppress counterfeit products obtained by copying a cash voucher or the like with a copying machine, an area constituted by halftone dots having a size exceeding the resolution of the copying machine is provided in a printed matter. A copy check method has been used in which a forgery can be identified by using a computer. However, due to technological advances in color copiers,
As the resolution of a color copying machine increases, it is difficult to sufficiently increase the copy checking effect in a system using large halftone dots exceeding the resolution of the copying machine.

[0003] Therefore, the present applicant creates a printed matter in which a hidden pattern is printed with a linear pattern, and when the printed matter is a copy, the hidden pattern does not appear even if the transparent discriminating tool is put on the printed matter. (Japanese Patent Application Nos. Hei 8-257961 and Hei 8-34085)
0) is already pending. In recent years, it has excellent design,
It is difficult to duplicate the main body, and holograms with high security are used as a measure against color copying.

[0004]

However, the printed matter containing the hidden pattern is not known to contain the hidden pattern, but if it is found that the printed matter contains the hidden pattern, a forged person having ordinary printing technology can compare it. It can be easily forged. In addition, it is difficult to increase the resolution of a printed matter in terms of securing stable productivity. Furthermore, as for the hologram, the picture of the hologram itself is required to have improved security, improved functionality, and added value by confirming only the picture.

SUMMARY OF THE INVENTION The present invention has been made in view of the foregoing problems, and has as its object to prevent forgery, to provide a highly secure and highly decorative image forming body, a confirmation tool, and a confirmation device. It is to provide a method.

[0006]

According to a first aspect of the present invention, there is provided a hologram photopolymer photosensitive material on which an image is recorded, a film for swelling interference fringes, and a halftone dot. Alternatively, a hidden pattern film in which a hidden pattern is formed by halftone dots or lines is placed on a hologram layer obtained by exposing and exposing a hidden pattern film in which a hidden pattern is formed by a line. An image forming body having a hologram layer formed by mounting a film, exposing the film, and attaching the film to a hologram photopolymer photosensitive material on which an image is recorded. According to a second aspect of the present invention, there is provided a confirmation tool having a pattern that interferes with a hidden pattern of an image forming body. A third invention is a confirmation method characterized by superimposing a confirmation tool on an image forming body and confirming the occurrence of a moiré pattern.

In a fourth aspect of the present invention, an interference fringe swelling film is laminated on a photopolymer photosensitive material for a hologram on which an image is recorded, and a confirmation pattern film having a confirmation pattern formed by halftone dots or lines is formed. Placed on the hologram layer obtained by exposure, or on the film for swelling interference fringes,
An image forming body comprising a hologram layer formed by placing a check pattern film having a check pattern composed of halftone dots or lines and exposing the same to a hologram photopolymer photosensitive material on which an image is recorded. It is. Fifth
According to a fourth aspect of the present invention, there is provided a confirmation tool having a hidden pattern which interferes with the confirmation pattern of the image forming body according to the fourth aspect. A sixth invention is a method for checking forgery, characterized by superimposing the checking tool of the fifth invention on the image forming body of the fourth invention and checking the occurrence of a moiré pattern.

[0008]

Embodiments of the present invention will be described below. FIG. 1 is an explanatory diagram showing a first embodiment of the present invention. In the first embodiment, a confirmation pattern forming body 1 is used as a confirmation tool. When the image forming body 3 is viewed alone, a hologram image is displayed, and it is not known that there is a hidden pattern. When the check pattern forming body 1 is overlaid on the image forming body 3, a moiré pattern can be checked.

When the confirmation pattern forming body 1 is superposed on the image forming body on which the hidden pattern is not written in place of the image forming body 3, the moire pattern cannot be detected. As described above, it is possible to determine whether the image forming body is an original image forming body or a forged image forming body based on whether or not a moiré pattern is generated.

FIG. 2 is a diagram showing the configuration of the confirmation pattern forming body 1 and the image forming body 3. The image forming body 3 is configured by covering the hologram layer 5 with a protective layer 7. The hologram layer 5 is formed by laminating a hologram photopolymer photosensitive material 43 and an interference fringe swelling film 41 (FIG. 6).

The confirmation pattern forming body 1 is made of T-6 manufactured by Toray.
Using a transparent film having a thickness of 0 and a thickness of 188 μm, printing was performed with black ink using an offset printing machine. The hologram layer 5 is composed of a photopolymer photosensitive material for hologram 43 (OmniDex706 made by DuPont) and a film 41 for swelling interference fringes (CTF75 made by DuPont).

The protective layer 7 is for protecting the surface of the hologram layer 5 and is formed by laminating a 50 μm thick PET film (Fujiclear, manufactured by Lintec) with an adhesive on the surface of the hologram layer 5.

The image forming body 3 is used for cards such as ID cards and credit cards, certificates, commuter passes, gift certificates, and printed matter such as cash vouchers such as ID certificates.

FIG. 3 is an enlarged view of a hidden pattern confirmation area 15 printed on the hidden pattern film 11. The confirmation area 15 has a confirmation pattern part 17, a pattern border part 19, and a background area 21.

The method of manufacturing the hidden pattern film 11 is as follows.
Like a normal plate making, it is created by drawing with a laser and developing. The inside of the confirmation area 15 on the hidden pattern film 11 is constituted by a line. Note that the inside of the confirmation area 15 may be constituted by halftone dots.

FIG. 4 is an enlarged view of an area 23 in the confirmation area 15. The confirmation pattern section 17 has a regular pattern in which black stripes are repeated at 45 degrees to the right and at regular intervals of 100 μm. The pattern border 19
It is provided around the confirmation pattern portion 17 with a width of 1 mm, and has a pattern shifted from the pattern of the confirmation pattern portion 17 by a half cycle.

Since the background area 21 has substantially the same halftone density as that of the confirmation pattern portion 17 and the pattern border portion 19, it cannot be visually determined that there is a hidden pattern in the confirmation pattern portion.

FIG. 5 is an enlarged view of a confirmation area 31 having a pattern similar to that of the confirmation area 15 of FIG. The confirmation area 31 has a confirmation pattern section 35, a pattern border section 37, and a background area 39.

Here, the confirmation pattern section 35 has a regular pattern in which black stripes are repeated at an interval of 100 μm at a right angle of 45 °. Pattern border 3
Reference numeral 7 is provided around the confirmation pattern section 35 and has a pattern shifted by a half cycle from the pattern of the confirmation pattern section 35.
The pattern rim 37 is desirably provided in consideration of the sharpness of the moire pattern when the checking tool is placed, but need not be attached.

The background region 39 has substantially the same density as the confirmation pattern portion 35 and the pattern border portion 37. Here, a stripe rising 45 degrees to the left is used, but the angle and color of the stripe can be freely determined.

Next, the manufacturing process of the hologram layer 5 will be described with reference to FIG. First, a hologram image is shot on the hologram photopolymer photosensitive material 43.

In order to photograph a hologram image, an object to be photographed is irradiated with light having a high coherence such as a laser beam, and the object light directly reflected from the object to be photographed is irradiated with a half mirror or the like. The interference fringes generated by the shifted reference light are recorded in the hologram photopolymer photosensitive material 43. After photographing the hologram image, the hologram photopolymer photosensitive material 43 records the hologram image as interference fringes.

Next, as shown in FIG. 3 or FIG.
5 or the confirmation area 31 is created on the hidden pattern film 11.

Subsequently, the interference fringe swelling film 41 is adhered to the hologram photopolymer photosensitive material 43 to form the hologram layer 5, and the hidden pattern film 11 is placed on the interference fringe swelling film 41 of the hologram layer 5. Then, ultraviolet rays are irradiated from the hidden pattern film 11 side. FIG.
FIG. 4 is a view in which the hidden pattern film 11 is placed on the interference fringe swelling film 41 and irradiated with ultraviolet rays.

The hidden pattern film 11 has confirmation areas 15 and 31 as shown in FIG. 3 or FIG. 5, and the confirmation area is constituted by a line. Hidden pattern film 11
Although the black portion of the upper line does not transmit ultraviolet light, the transparent portion transmits ultraviolet light, and the ultraviolet light is incident on the interference fringe swelling film, and the ability of the interference fringe swelling film 41 is lost.

After the above exposure processing is completed, the hologram layer 5
Is subjected to a heat treatment to promote swelling of the interference fringes. When heat treatment is performed on the hologram layer 5, the interval between the interference fringes is increased in the portion where the ultraviolet light is not passed, and the original interval between the interference fringes of the hologram image is maintained in the portion where the ultraviolet light is passed. That is, the hologram layer 5 records the hidden pattern as a portion where the interval between the interference fringes of the hologram image remains unchanged and a portion where the interval between the interference fringes is widened.

FIG. 7 is an enlarged view of the confirmation pattern forming body 1. The confirmation pattern forming body 1 is made of a light transmitting film or the like.
5, and interferes with the confirmation pattern portion 35 and the pattern border portion 37 and does not interfere with the background region 39. Here, the method of manufacturing the confirmation pattern forming body 1 includes a method of making by printing and a method of using a plate making film. The interference fringe swelling film 41
Then, after placing and exposing a hidden pattern film 11 having a hidden pattern formed by halftone dots or lines, the hologram layer 5 is formed by adhering to a hologram photopolymer photosensitive material 43 on which an image is recorded. You may do so.

FIG. 8 is an explanatory view showing a case where the confirmation pattern forming body 1 is placed on the image forming body 3. The confirmation pattern portion 35 interferes with the stripe of the confirmation pattern forming body 1,
It becomes completely black. In addition, the pattern border portion 37 interferes with the stripe of the confirmation pattern forming body 1 and the background region 39.
Lighter grey. Since the background area 39 does not interfere with the check pattern forming body 1, the gray level does not change. Therefore, a black moiré pattern with a white border appears. In the case of FIG. 4, a black letter A with a white border appears.

FIG. 9 is shifted from the case of FIG.
FIG. 4 is an explanatory view showing a case where the confirmation pattern forming body 1 is placed on the image forming body 3. The confirmation pattern portion 35 interferes with the stripes of the confirmation pattern forming body 1 and becomes lighter gray than the background area 39. . In addition, the pattern border 37
Interferes with the stripe of the confirmation pattern forming body 1 and becomes completely black. Since the background area 39 does not interfere with the check pattern forming body 1, the gray level does not change. Therefore,
A white moiré pattern with a black border emerges. In the case of FIG. 4, a white character A with a black border appears.

FIG. 10 shows an image forming body 3 with an ID card 51.
It is a figure showing the example provided in. The ID card 51 is provided with a face photograph 53 and the like in addition to the image forming body 3a. In this state, when the ID card 51 is viewed with the naked eye, the image forming body 3a
Can be confirmed.

FIG. 11 is a diagram in which the confirmation pattern forming body 1 is placed on the ID card 51 of FIG. The hologram image can be confirmed in FIG. 10, and the hidden pattern character A is displayed in the state of FIG.
Is verified, it is proved to be the original ID card 51. However, even if the hologram image can be confirmed in FIG. 10, if there is an ID card 51 in which the hidden pattern character A cannot be confirmed in the state of FIG.

As described above, according to the present embodiment, by using the confirmation pattern forming body 1 as a confirmation tool, the original ID card 51 and the forged ID card can be checked by a simple method.

Next, a second embodiment will be described. FIG. 12 is a diagram showing a configuration of a hidden pattern forming body 61 and an image forming body 63 as checking tools in the second embodiment. In the second embodiment, the image forming body 63
Is formed by covering a hologram layer 65 on which a confirmation pattern is recorded with a protective layer 67.

Here, the pattern of the confirmation pattern forming body 1 of the first embodiment is formed on the hologram layer 65, and the hidden pattern forming body 61 is formed of the hidden pattern film 11 of the first embodiment. A pattern is formed. The second embodiment also has the same effects as the first embodiment. The image forming bodies according to the first and second embodiments described above have high decorativeness and can be used for toys, novelties, premiums, packaging materials, books, and the like.

[0035]

As described above, according to the present invention,
It is possible to provide an image forming body, a checking tool, and a checking method that can prevent forgery, have high security, and have excellent decorativeness.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a confirmation pattern forming body 1 and an image forming body 3.

FIG. 3 is an enlarged view of a hidden pattern confirmation area 15 printed on a hidden pattern film 11;

FIG. 4 is an enlarged view of an area 23 in a confirmation area 15;

5 has a pattern similar to the confirmation area 15 of FIG. 3,
Enlarged view of confirmation area 31 of design simplified from letter A

FIG. 6 is a view in which a hidden pattern film 11 is placed on an interference fringe swelling film 41 and irradiated with ultraviolet rays.

FIG. 7 is an enlarged view of a confirmation pattern forming body 1.

FIG. 8 is an explanatory diagram of a case where a confirmation pattern forming body 1 is placed on a confirmation area 31;

9 is shifted by a half cycle from the case of FIG.
Explanatory drawing when the confirmation pattern forming body 1 is placed on the top

FIG. 10 is a diagram showing an example in which an image forming body 3 is provided on an ID card 51.

11 is a diagram in which the confirmation pattern forming body 1 is placed on the ID card 51 of FIG.

FIG. 12 is a diagram illustrating a configuration of a hidden pattern forming body 61 and an image forming body 63 according to the second embodiment.

[Explanation of symbols]

 1 ... Confirmation pattern forming body 3, 3a, 63 ... Image forming body 7, 67 ... Protective layer 5, 65 ... Hologram layer 11 ... Hidden pattern film 41 ... For interference fringe swelling Film 43 Photopolymer photosensitive material for hologram 61 Confirmation pattern formed body

Claims (10)

[Claims] 1. A film for swelling interference fringes on a hologram photopolymer photosensitive material on which an image is recorded,
Furthermore, a hidden pattern film in which a hidden pattern composed of a halftone dot or a line is placed and exposed to a hologram layer obtained by exposing, or a film for interference fringe swelling, a hidden pattern composed of a halftone dot or a line is formed. An image forming body having a hologram layer formed by mounting the exposed hidden pattern film, exposing the film, and attaching the film to a hologram photopolymer photosensitive material on which an image is recorded. 2. The image forming body according to claim 1, wherein the hologram layer is a volume hologram. 3. The hidden pattern according to claim 1, wherein the hidden pattern is bordered by halftone dots or lines which are half-period with respect to the dots or lines forming the picture. Image forming body 4. A confirmation tool having a pattern that interferes with a hidden pattern of the image forming body according to claim 1. 5. A confirmation method comprising: superimposing the confirmation tool according to claim 4 on the image forming body according to claim 1 to confirm the occurrence of a moire pattern. 6. A film for swelling interference fringes on a photopolymer photosensitive material for hologram on which an image is recorded,
Furthermore, a confirmation pattern film composed of a confirmation pattern composed of halftone dots or lines is placed on a hologram layer obtained by exposing the film or an interference fringe swelling film. An image forming body comprising a hologram layer formed by mounting the obtained confirmation pattern film, exposing the film, and attaching the film to a photopolymer photosensitive material for hologram on which an image is recorded. 7. The image forming body according to claim 6, wherein the hologram layer is a volume hologram. 8. A confirmation tool having a hidden pattern that interferes with the confirmation pattern of the image forming body according to claim 6. 9. The concealment pattern according to claim 8, wherein the hidden pattern is bordered by halftone dots or lines which are half-period with respect to the dots or lines forming the picture. Confirmation tool. 10. The image forming body according to claim 6, wherein
A confirmation method characterized by superimposing the described confirmation tool and confirming the occurrence of a moiré pattern.