JP2009214304A - Forgery prevention latent image design organizer and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To determine authenticity by recognizing a color latent image having a uniform color when viewed from an upper surface and having a shading tone when viewed obliquely from all directions. <P>SOLUTION: On the surface of a base material, a print pattern having color elements arranged in all directions so as to prevent neighboring of similar colors of a plurality of colors 12, 13, 14 which become color elements of a color image and to prevent reading periodicity when a base material is viewed from an upper surface, and a raised pattern having a projected part 11 of a shape surrounded by an apex part or a top surface protruded from a base material surface to the side and a side face part connected to the base material independently disposed in a latent image part on the base material surface are formed. For the base material in which both of the patterns are formed, when viewed obliquely, a lower side being a viewing position in a selected Fig.(a) which is a bird's eye view, colors of raised pattern visible from the viewing position and the print pattern covering the top surface and the side face are deposited as latent image, thereby constructing a forgery prevention latent image formed body. Its manufacturing method is also provided. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention applies color or single-color shading applied to valuable printed matter that requires prevention of counterfeiting and tampering such as banknotes, securities, passports, identification cards, cards, stamps, certificates and admission tickets. The present invention relates to a forgery-preventing latent image pattern formed body having a gradation latent image and a method for producing the same.

Precious printed matter such as banknotes, securities, passports, identification cards, cards, stamps, certificates and admission tickets are required to suppress counterfeiting or falsification. As a preventive measure, a technique is known in which a fine image line configuration or the like is added and the authenticity is determined based on the presence or absence of the configuration.

However, since a fine image line configuration and the like can be almost reproduced by a color copying machine, authenticity determination cannot be easily performed. In particular, there is a risk that precious printed matter is easily duplicated and counterfeited due to the recent improvement in accuracy of electronic color copying machines or scanners and the spread thereof.

In such a technical background, the applicant of the present invention forms a relief pattern having a concavo-convex shape on a base material, and gives a latent image by printing a line pattern in a single color on the base material. A technology for making it possible to recognize a single-color latent image by changing the visual recognition for use in authenticity determination has been filed (see, for example, Patent Documents 1 and 2).

In addition, an application has also been filed for a technique for authenticating whether a latent color image can be recognized by forming a relief pattern having a concavo-convex shape on a substrate and printing a line pattern in color. (For example, see Patent Document 3)

Japanese Patent No. 2600094 Japanese Patent No. 2615401 JP 2000-313160 A

However, when the color line pattern formed on the base material is printed to give a latent image, when viewed from the front, the color line pattern that is repeatedly arranged stands out, unlike a single color line pattern. Since the secondary color mixture does not become flat and the design balance is broken, there is room for improvement.

In addition, a known technique for depositing a color latent image is a technique in which a latent image can be visually recognized by a relief pattern and a color line, and is visible only from a direction parallel to the longitudinal direction of the relief pattern. There is a problem that the latent image cannot be confirmed regardless of the direction.

Therefore, as a problem in the present invention, it is possible to confirm a pattern visually recognized from directly above as a uniform hue or a pattern with a subtle hue and shade gradation, and not to affect the overall design. It is another object of the present invention to make it possible to visually recognize a color latent image not from a fixed direction but from other directions.

According to the present invention, a first region (hereinafter referred to as a “protrusion pattern”) including a plurality of concave portions and / or convex portions formed of a plurality of first elements is provided on the surface of the substrate, and a plurality of second regions made of a coloring material are provided thereon. A forgery-preventing latent image pattern forming body that has a second region composed of elements (hereinafter referred to as a “print pattern”), and in which the latent image pattern is viewed when viewed from an angle other than directly above. is there.

In order to solve the above-described problems, the present invention arranges polygons or circles in which a print pattern is colored in a plurality of colors as color elements of a color image, adjacently arranged in all directions such as a lattice shape or a honeycomb shape. The arrangement is arranged so that the periodicity of the color cannot be read when the substrate surface is viewed from above, and the raised pattern is the same color as the substrate on the substrate surface, and is a polygon or circle independently. Protrusions protruding from the surface are formed, and each convex part is a raised shape composed of a side part connected from the base material so as to surround the apex part or the apex part or the apex part and the apex part or the apex part or the apex part. There is a latent image pattern forming body for anti-counterfeiting that is arranged independently at a position where it is deposited as a latent image, and the tint covering the top and side surfaces of the convex portion from all directions around the convex portion can be visually recognized as a latent image. It is characterized by being.

In addition, the above-described print pattern is a print pattern in which a plurality of colors (for example, the three primary colors of yellow, magenta, and cyan) that are color elements of a color image are arranged in a specific shape and adjacent to each other. Consists of. The color of this print pattern is not limited, including the base color, and the number of colors is not limited. When the three primary colors are alternately arranged, no pattern is visible when viewed from the top, but the anti-counterfeit latent image pattern forming body can be visually recognized as a color pattern by arbitrarily arranging each color. It is characterized by that.

In addition, the above-mentioned print pattern is an aggregate in which polygons or circles are gathered and is colored as each color element, and becomes a shade expression by making each area of the polygons or circles different. It is a latent image pattern forming body for preventing forgery that can be visually recognized as a color pattern having gradation.

Further, in the above-described raised pattern, the tint covering the top and side portions of the raised pattern is deposited as a latent image, and the forgery prevention latent increases as the number of side surfaces on the raised portion of the raised pattern increases. It is an image pattern formed body. Furthermore, there is no restriction | limiting in the shape of the convex part which comprises a protruding pattern, All do not need to be the same shape and the same size.

Further, in the raised pattern, the color covering the top surface portion and the side surface portion of the convex portion is precipitated as a latent image, and when two or more colors are covered, it is visually recognized as a mixed color, and the surface area of the top surface portion and / or the side surface portion of the raised pattern is reduced. It is a forgery-preventing latent image pattern forming body that expresses the density of a latent image by changing it.

In addition, the raised pattern is a polygonal or circular convex part protruding from the base material or a concave part recessed from the base material, and there are no restrictions on the shape and size, etc., and forgery prevention that is independently arranged in the latent image part It is a latent image pattern formed body.

In addition, by forming a raised pattern on the surface of the substrate and a printing pattern of a plurality of colors that will be the color elements of the color image, when the substrate surface is viewed from the top, a color pattern with a gradation is visually recognized. Is a method for producing an anti-counterfeit latent image pattern forming body in which a color latent image different from that seen from the upper surface can be visually recognized, and a color original image that is an original image of a color latent image deposited by the above-described raised pattern is obtained. A process of forming a color separation image having a gray scale for each color element by separating it into a plurality of color elements, and a color original image which is an original image of a print pattern is divided into a plurality of color elements for each color element A step of forming a color separation image having light and shade gradations, and a raised pattern having the same color as that of a substrate having one or more convex portions which are raised in a polygonal shape or a circular shape and whose cross section is formed as a convex portion Process, It is characterized by a method for manufacturing an anti-counterfeit latent image pattern formed body comprising the step of multiple print sequence configuration of a print pattern consisting of a plurality of colors serving as the color image color element.

In addition, by forming a raised pattern on the surface of the substrate and a printing pattern of a plurality of colors that will be the color elements of the color image, when the substrate surface is viewed from the top, a color pattern with a gradation is visually recognized. Is a method for producing an anti-counterfeit latent image pattern forming body in which a color latent image different from that seen from the upper surface can be visually recognized, and an original color image that becomes an original image of a color latent image deposited by a raised pattern, A process for forming a color separation image having a gradation of light and shade for each color element by separating it into a plurality of color elements, and a color original image which is an original image of a print pattern is divided into a plurality of color elements and light and shade for each color element A step of forming a color separation image having the following gradation, a step of printing a large number of print pattern arrangements composed of a plurality of colors as color elements of the color image, and a bulge in a shape such as a polygon or a circle, It is characterized in that the surface is a method for manufacturing an anti-counterfeit latent image pattern formed body comprising the step of forming the substrate and the same color of the raised pattern having one or more protrusions formed as a convex portion.

In addition, the color ink serving as the color element described above expresses a latent image of color using three primary colors such as yellow, magenta, and cyan, and the color and the number of colors are not limited.

In addition, by forming a raised pattern and a large number of printed patterns on the substrate surface, when the substrate surface is viewed from the top surface, a monochrome pattern with a gradation is visually recognized, and when viewed from an oblique direction, when viewed from the top surface and Is a method for producing a latent image pattern forming body for preventing counterfeiting in which a latent image of a monochromatic pattern having different gradations can be visually recognized. A step of forming a separation image having a tone, a step of forming a separation image having gradations of light and shade by decomposing an original image as an original image of a printing pattern into a plurality of gradations, and a shape such as a polygon or a circle A step of forming a raised pattern of the same color as a base material having one or more convex portions that are raised and formed as convex portions in a cross section, and a step of printing an array configuration of a print pattern composed of a single color and a large number of gradations Anti-counterfeit latent image pattern shape including It is characterized in that the body is a method for manufacturing.

Also, by forming a raised pattern and a large number of printed patterns on the substrate surface, when the substrate surface is viewed from the upper surface, a monochrome pattern with gradation is visually recognized, and when viewed from an oblique angle, when viewed from the upper surface Is a method for producing a latent image pattern forming body for preventing counterfeiting in which a latent image of a monochromatic pattern having different gradations can be visually recognized. A step of forming a separation image having a tone, a step of forming a separation image having gradations of light and shade by decomposing the original image as an original image of a print pattern into a plurality of gradations, A step of printing an array configuration of printed patterns, and a step of forming a raised pattern of the same color as that of a base material having one or more convex portions that are raised in a polygonal shape or a circular shape and whose cross section is formed as a convex portion Anti-counterfeit latent image containing It is characterized by a method for manufacturing a like forming body.

The printed pattern is a forgery-preventing latent image pattern forming body that expresses color tone and shade by changing the polygonal or circular area colored as the color element of the print pattern according to the shade of gradation of the color separation image. It is the manufacturing method of this.

Further, the raised pattern is a latent image pattern forming body for preventing counterfeiting that expresses the density of the latent image by changing the surface area of the top surface and the side surface of the raised pattern according to the color separation image or the gradation of the density of the separated image. It is the manufacturing method of this.

Further, the raised pattern is a method for producing a forgery-preventing latent image pattern formed by intaglio printing, relief printing, screen printing, embossing or creping, etc., but unevenness is formed. If so, the manufacturing method is not limited.

Further, the above-mentioned base material is characterized in that it is a forgery-preventing latent image pattern forming body which is a base material capable of forming unevenness of a raised pattern such as paper, resin or metal and coloring a printing pattern. And if it is a base material which can be colored, it will not be limited at all.

  The second region used in the means for solving the present invention is a print pattern for the sake of explanation, but is not limited to printing as long as it can be applied with a color material.

As an effect in the present invention, the surface of the base material is formed by arranging the plurality of colors as color elements of the color image formed on the base material in an omnidirectional manner without any gaps such as a lattice shape or a honeycomb shape. Since the color periodicity cannot be read when viewed from the top, the color becomes uniform, and when the shape and size of the printed pattern is arbitrarily adjusted, it is possible to express a pattern with shades of gray. The effect is that a printed material with a good design balance can be produced.

In addition, the shape and arrangement of the convex portions of the same color as the base material can be arbitrarily associated with the print patterns of a plurality of colors (for example, the three primary colors of yellow, magenta, and cyan) as color elements of the color image. By using the determined raised pattern, it is possible to confirm the subtle shades and shades of the latent image in a specific direction, and to confirm the presence of the latent image in all directions.

  The best mode for carrying out the present invention will be described. However, the present invention is not limited to the best mode for carrying out the invention described below, and can be appropriately carried out within the scope of the technical idea described in the claims.

The forgery-preventing latent image pattern formed body of the present invention is, for example, a valuable printed material such as a security, a passport, and an identification card. As shown in FIG. A raised pattern having a portion 3 is formed, and a color latent image is formed by printing a plurality of colors, for example, three-color printing patterns, which are color elements of a color image on the raised pattern. The base material 1 is formed from paper, resin, fiber, or the like.

The best mode for carrying out the present invention will be described with reference to the drawings. FIG. 1 is an example of an explanatory diagram in a cross section showing a principle that a pattern covered with a printed pattern on a raised pattern is different depending on a viewing point, and FIG. 2 is an arrangement diagram when the printed pattern is viewed from the upper surface. FIG. 3 shows an example of a layout when the raised pattern is visually recognized from the upper surface and an example of the layout viewed from the upper surface when the printed pattern and the raised pattern are combined. On the other hand, each example of a diagram showing a difference in color of the latent image visually recognized when the position of the convex portion of the raised pattern is changed is shown.

First, the deposition of the latent image pattern in the present invention will be described with reference to FIGS. 1 (a), (b) and (c) are enlarged views of FIG. 2 (c) AA cross section. As shown in FIG. 1 (a), the anti-counterfeit latent image pattern-formed product of the present invention cannot be visually recognized at all from the top 2, but as shown in FIG. 1 (b), When viewed from an oblique direction 4, the original image is formed by the color of the print pattern covering the visible portion 5 by being divided into a portion 5 that is deposited as a latent image by the convex portion of the raised pattern and a portion 6 that is hidden behind the convex portion and cannot be seen. A color pattern having the same color tone can be visually recognized.

Moreover, FIG.1 (c) is a figure at the time of setting it as a recessed part contrary to FIG.1 (b). As shown in FIG. 1 (c), when viewed from diagonally 4, the portion 5 that can be visually recognized is divided into a portion 5 that precipitates as a latent image due to the concave portion of the raised pattern and a portion 6 that becomes invisible behind the concave portion. A color pattern having the same color tone as that of the original image can be visually recognized by the color of the printing pattern to be covered.

FIG. 2 is a diagram for explaining the basic configuration of the anti-counterfeit latent image pattern-formed body according to the present invention, and FIG. 2 (c) is a plan view showing the main part of the anti-counterfeit latent image pattern-formed body. The AA cross section is shown in FIG. The raised portion 3 of the raised pattern is raised on the base material 1 by embossing, intaglio printing, scoring, etc., and has the same color as the base material arranged independently without having periodicity in the latent image portion. It is composed of a large number of convex portions 3.

In FIG. 2C, on the substrate 1, print patterns Y7 respectively corresponding to three colors Y (yellow), M (magenta), and C (cyan), which are a plurality of colors that are color elements of the color image. M8 and C9 are formed. Each convex part 3 for depositing the latent image is polygonal, and the convex part 10 of the raised pattern is configured such that a side surface and a top surface part that are visible from the visual recognition direction are arranged in a colored portion where the latent image is deposited. Consists of.

The principle of depositing this by the arrangement of the raised pattern is shown in FIG. 3 which is a plan view of the latent image pattern forming body for preventing forgery. Then, the convex part 11 of a protruding pattern is arrangement | positioning in the case of depositing Y12. In FIG.3 (b), the convex part 15 of a protruding pattern is arrangement | positioning when the color of the secondary color of Y16 and M17 precipitates. In FIG.3 (c), the convex part 19 of a protruding pattern is arrangement | positioning when the color tone of the tertiary color of Y20, M21, and C22 precipitates. The convex portions of these raised patterns are appropriately set in consideration of desired printing and the accuracy of the latent image. The raised pattern is formed by forming a number of such convex shapes on the substrate.

As shown in FIG. 2C, three-color printing patterns Y7, M8, and C9 of Y, M, and C are printed on the base material 1 on which the raised pattern is formed. The print patterns Y7, M8, and C9 are regularly arranged so that the same color is not adjacent. The raised portion of the raised pattern 10 is irregularly arranged in the print pattern depending on the color to be deposited, but is not recognized when viewed from the upper surface because it is covered with a colored print pattern. The three-color printing patterns Y7, M8, and C9 are not limited in shape, such as polygonal or circular shapes, but a hexagonal shape as shown in FIG. 2A, for example, is formed on the substrate 1 in a honeycomb shape. .

The operation of the counterfeit-preventing latent image pattern formed body having the above configuration will be described below. As shown in FIG. 1 (a), when the anti-counterfeit latent image pattern formed body is viewed from directly above the printed surface 2 (from a direction perpendicular to the printed surface), the printed pattern printed on the base material Can be visually recognized without being affected by the raised pattern. That is, it is visually recognized as shown in FIG.

In FIG. 1B, when the counterfeit-preventing latent image pattern-formed body is visually recognized from the upper left side (lower side in FIG. 3A) with respect to the base material 1, it is as follows. In FIG. 3A, regarding the raised portion 11 of the raised pattern, the printed patterns M13 and C14 located on the right side of the raised portion 11 of the raised pattern in the arrow X direction are the shadows of the raised portion 11 of the raised pattern. However, Y12 of the printed pattern on the side surface located on the left side of the top surface portion of the raised portion 11 of the raised pattern can be visually recognized without being shaded by the raised portion 11 of the raised pattern.

In FIG. 3B, regarding the raised pattern convex portion 15, the print pattern C <b> 18 located on the right side of the raised pattern convex portion 15 in the X direction is the shade of the raised pattern convex portion 15. Although it cannot be visually recognized, Y16 and M17 of the printed pattern 15 on the left side of the top surface portion and the top surface portion of the convex portion 15 of the raised pattern can be visually recognized without being shaded by the convex portion 15 of the raised pattern.

In FIG. 3 (c), regarding the raised portion 19 of the raised pattern, Y20 and M21 of the printed pattern located on the left side of the top surface portion and the top surface portion of the raised portion 19 toward the X direction from the raised portion 19 of the raised pattern. C22 can be visually recognized without being shaded by the protruding portion 19 of the raised pattern.

Accordingly, in FIG. 3A, when the protruding portion 11 of the raised pattern is visually recognized from the upper left side facing in the X direction, the three-color print patterns Y12, M13, and C14 are Y12 as shown in FIG. 3D. Is visually recognized and can be distinguished from the background color 25. In FIG. 3B, when the protruding portion 15 of the raised pattern is viewed from the upper left side facing the X direction, the three-color print patterns Y16, M17, and C18 are represented by Y16, M17 as shown in FIG. Will be visible. FIG. 3 (e) is an enlarged state, and the convex portions of the actual raised pattern are small, so that when viewed visually, the colors of the two print patterns Y16 and M17 are mixed as shown in FIG. 3 (e). It becomes visible as the next color 23 and can be distinguished from the background color 25.

In FIG. 3 (c), when the protruding portion 19 of the raised pattern is visually recognized from the diagonally upper left side in the X direction, the three-color print patterns Y20, M21, C22 are represented by Y20, M21, C22 will be visible. FIG. 3 (f) shows an enlarged state, and since the convex portions of the actual raised pattern are small, the colors of the three-color print patterns Y20, M21, and C22 are mixed as shown in FIG. 3 (f). The third color 24 is visually recognized. In the description of the figure, the color is the same as that of the background color 25, but the mixing ratio is the same by adjusting the arrangement and size of the raised portions of the raised pattern to arbitrarily specify the mixing ratio of the three colors. It becomes distinguishable from the background color.

Therefore, the counterfeit-preventing latent image pattern formed body looks different depending on the arrangement position of the raised pattern in the color viewed from directly above the print surface and the color viewed obliquely from above.

In FIGS. 3A, 3B, and 3C, the protrusions of the raised patterns and the protrusions of the other raised patterns are observed on the same principle that the color latent image by the combination of the printed patterns Y, M, and C can be visually recognized. Also, by appropriately designing the position, size, etc. of each part, it becomes a forgery-preventing latent image pattern forming body in which various colors can be visually recognized as latent images when viewed from obliquely above. Whether or not there is such a latent image enables authenticity determination.

Next, a method for producing the latent image pattern forming body for preventing forgery of the present invention will be described.
The raised pattern is formed when the latent image portion is raised or depressed. FIG. 1D is a diagram showing an example of forming a raised pattern on a substrate by intaglio printing embossing as a method of forming a latent image pattern. The pattern to be a latent image is visually recognized by a raised pattern that is an aggregate of each element whose surface shape is raised or depressed, and the arrangement of each element is arranged as a print pattern by the color to be visually recognized as a latent image. , M, and C are arranged based on the color separation image in association with each color element. This raised pattern is formed as an image on the film, and is exposed and developed with a metal plate coated with a photosensitive film, exposing the metal in the image area, corroding the metal with a corrosive solution, and forming an intaglio. The Moreover, a letterpress is formed in the same process by making the image of a film into a reverse image.

Using the manufactured intaglio 64 of FIG. 1 (d), intaglio printing is performed without filling intaglio ink, thereby forming the embossed pattern 10 of FIG. 1 (d) in which the shape of the substrate surface is raised or depressed. And a raised pattern. Also, the emboss can be formed on the letterpress. A latent image having a desired color can be visually recognized by the manufacturing method in which the elements of the raised pattern are individually arranged in association with the color elements. Further, each color element of the printing pattern is formed on the substrate by wet offset printing. Each of these color elements is, for example, Y, M, and C, arranged in the front direction so as not to be adjacent to each other, color-separated into each color element to form an image on a film, and exposed by overlapping with a lithographic plate coated with a photosensitive film, Develop and produce a lithographic plate. By performing wet offset printing using the produced lithographic plate, a printing pattern is formed on the surface of the substrate as shown in Y31, 35, M32, 36, C33, 37 in FIGS. 4 (d) and 4 (e). The

The anti-counterfeit latent image pattern formed body of the present invention has a configuration in which a printed pattern is superimposed on a raised pattern in which the shape of the substrate surface is raised or depressed, and in the combination of embossing and wet offset printing in this description, The process of applying the raised pattern after applying the printed pattern to the substrate is the best.

Embodiments of a latent image pattern forming body for preventing forgery according to the present invention will be described below with reference to the accompanying drawings. However, the present invention is not limited to the examples described below, and can be appropriately carried out within the scope of the technical idea described in the claims.

(Embodiment 1) Embodiment 1 of the present invention will be described with reference to FIGS. In the latent image pattern forming body for preventing forgery shown in FIGS. 3A, 3B, and 3C, the sizes of the raised portions 11, 15, and 19 of the raised pattern are the same, and the peak of each raised pattern is the same. Since the area covering the surface portion and the side surface portion is the same, the color of the latent image is different but is visually recognized as the same density.

In addition, the shape of each element of the raised pattern is an example in which hexagons are arranged in a honeycomb shape. However, as shown in FIGS. 2D and 2E, the shape of each element may be rectangular, circular, or the like. ) And a section CC of FIG. 2 (e), as shown in FIG. 1 (b), when viewed from obliquely 4, a portion 5 deposited as a latent image by the convex portion of the raised pattern; By being divided into a portion 6 that cannot be viewed behind the convex portion, a color pattern having the same color tone as that of the original image can be visually recognized by the color of the print pattern covering the portion 5 that can be viewed.
In addition, each element of the raised pattern is formed on the base material with intaglio ink for intaglio printing. FIG. 1E is a diagram showing an example of forming by intaglio printing.

The pattern that becomes a latent image is visually recognized by a raised pattern that is an aggregate of each element in which the shape of the surface of the substrate is raised or depressed, and the arrangement of each element is arranged as a printed pattern according to the color that is visually recognized as a latent image. , M, and C are arranged based on the color separation image in association with each color element. This raised pattern is formed on the film as an image, and is exposed to light and developed on a metal plate coated with a photosensitive film, exposing the metal in the image area, corroding the metal with a corrosive liquid, and forming an intaglio. The Using the manufactured intaglio 65 of FIG. 1 (e), intaglio ink 66 is filled and intaglio printing is performed to form the intaglio ink 66 of FIG. It becomes.

Further, the shape of each element of the print pattern is an example in which hexagons are arranged in a honeycomb shape. However, as shown in FIGS. When the latent image pattern forming body for preventing forgery is visually recognized from 2 directly above the printed surface (from a direction perpendicular to the printed surface), the printed pattern printed on the substrate becomes a raised pattern as shown in FIG. Since the entire surface can be visually recognized without being affected, the same effect is obtained.

In addition, each color element of the print pattern is formed on the substrate by dry offset printing. In addition, each color element is arranged in the front direction so that, for example, Y, M, and C are not adjacent to each other, color-separated into each color element to form an image on a film, and overlaid with a photosensitive resin plate, exposure and development A resin relief printing plate is manufactured. By performing dry offset printing using the manufactured resin relief printing plate, a printing pattern is formed on the surface of the substrate as shown in Y31, 35, M32, 36, C33, 37 in FIGS. 4 (d) and 4 (e). Is done.

The anti-counterfeit latent image pattern formed body of the present invention is a configuration in which a printing pattern is superimposed on a raised pattern in which the shape of the substrate surface is raised or depressed, and in the combination of intaglio printing and offset printing in this description, The process of applying the raised pattern after applying the printed pattern to the substrate is the best.

4 (d), (e), and (f) are plan views of the main part of the latent image pattern forming body for preventing forgery, and FIG. 4 (a) is a cross-sectional view taken along line BB in FIG. 4 (d). 4B is a cross-sectional view taken along the line CC in FIG. 4E, and FIG. 4C is a cross-sectional view taken along the line D-D in FIG. FIGS. 4D, 4E, and 4F are configurations that express Y (yellow) as a latent image.

4D and 4E show the case where the size of the convex portion of the raised pattern is changed and the convex portion 34 is made smaller than the convex portion 30. FIG. Comparing the effect of changing the size in the cross-sectional views of FIGS. 4A and 4B, the area of Y (yellow) covering the top surface portion and the side surface portion is smaller than Y27 in Y29. The increase / decrease in the area is an increase / decrease in the area ratio in the unit area, and is recognized as an increase / decrease in density when viewed from diagonally above 26 and 28. As a result, the tint of the plan view when viewing FIGS. 4D and 4E from the top is the same, but when viewing FIGS. 4D and 4E from below, it is a latent image. The density of Y (yellow) is visually recognized as (e) decreases from FIG.

Example 1 is a method of expressing the density of a latent image by adjusting the area that can be visually recognized as a latent image by changing the size of the protruding portion of the raised pattern. If the area can be adjusted even if it is not a trapezoidal cross section like the convex part of the raised pattern in FIG. 4 (a), a cone having no top surface part of the convex part of the raised pattern as shown in FIG. 4 (c) A similar effect can be obtained with a pyramid. By adjusting the area visible as the latent image of each raised pattern, it is possible to express shades without affecting the color, monochrome, secondary color or tertiary color, and the latent image pattern formation for anti-counterfeiting can be When visually recognized, a color latent image having a finer color tone can be visually recognized.

(Embodiment 2) FIG. 5 is a diagram for explaining an embodiment 2 of a latent image pattern forming body for preventing forgery according to the present invention. FIGS. 5A and 5B are plan views of the principal part of the latent image pattern forming body for preventing counterfeiting, and FIGS. 5A and 5B are configurations in which Y (yellow) is expressed as a latent image. is there.

  In addition, the shape of each element of the raised pattern is an example in which hexagons are arranged in a honeycomb shape. However, as shown in FIGS. 2D and 2E, the shape of each element may be rectangular, circular, or the like. ) And a section CC of FIG. 2 (e), as shown in FIG. 1 (b), when viewed from obliquely 4, a portion 5 deposited as a latent image by the convex portion of the raised pattern; By being divided into a portion 6 that cannot be viewed behind the convex portion, a color pattern having the same color tone as that of the original image can be visually recognized by the color of the print pattern covering the portion 5 that can be viewed.

In addition, each element of the raised pattern is a manufacturing method in which the elements are formed on the substrate by sweeping. FIG. 1 (f) is a diagram showing an example of forming by sweeping. The pattern that becomes a latent image is visually recognized by a raised pattern that is an aggregate of each element in which the shape of the surface of the substrate is raised or depressed, and the arrangement of each element is arranged as a printed pattern according to the color that is visually recognized as a latent image. , M, and C are arranged based on the color separation image in association with each color element. This arranged raised pattern is formed on a film as an image, and is exposed and developed on a papermaking net coated with a photosensitive film, and the image portion is cured to form a crease mold. By squeezing the paper with the papermaking net provided with the squeeze mold 68 shown in FIG. 1 (f), a bulge shape (scratch pattern) is formed on the surface of the stock 69, and a bulge pattern is formed.

Further, the shape of each element of the print pattern is an example in which hexagons are arranged in a honeycomb shape. However, as shown in FIGS. When the latent image pattern forming body for preventing forgery is visually recognized from 2 directly above the printed surface (from a direction perpendicular to the printed surface), the printed pattern printed on the substrate becomes a raised pattern as shown in FIG. Since the entire surface can be visually recognized without being affected, the same effect is obtained.

Further, each color element of the printing pattern is formed on the substrate by an ink jet printer. Further, each color element is arranged in the front direction so that, for example, Y, M, and C are not adjacent to each other, and data that is color-separated into each color element is produced, and printing is performed using an ink jet printer, so that FIG. ) And (e), Y31, 35, M32, 36, C33, 37, and a printed pattern is formed on the substrate surface.

The three-color printing patterns Y39, M40, and C41 in FIG. 5A have the same area. Y43 of the three-color print pattern in FIG. 5B is a diagram in which the area is narrower than M44 and C45, and M44 and C45 in FIG. 5B and M40, C41, and Y39 in FIG. It is the same area. When FIG. 5A is viewed from directly above, since the areas of the respective colors are the same, the color of the tertiary color is an achromatic color in which the three colors are mixed with the same density. In FIG. 5B, the area of Y43 becomes narrower than M44 and C45, so that a purple tertiary color is obtained. By adjusting the area ratio of the three color printing patterns, the color of the tertiary color can be designated when the forgery prevention latent image pattern formed body is viewed from directly above. In addition, when the area is increased or decreased while maintaining the area ratio of the three colors, it is possible to specify the shade while maintaining the color of the tertiary color.

Note that even if the color is adjusted by changing the area of the printed pattern in FIGS. 5A and 5B, the raised portions 38 and 42 of the raised pattern have the same size and cover the top and side portions. Since the color ratio and area of the print pattern are the same, the color and density of the latent image are the same.

As a result, the color and density adjustment of the print pattern visually recognized when the anti-counterfeit latent image pattern formed body is visually recognized from the upper surface by the means of Example 2, and the color of the latent image visually recognized when visually observed from an oblique direction. Taste and light / dark adjustment can be performed individually, and a forgery-preventing latent image pattern forming body having a fine color tone is obtained.

(Example 3) An outline of a process for producing a forgery-preventing latent image pattern-forming body according to the present invention will be described with reference to FIG. Here, the raised pattern forms unevenness on the substrate by embossing by intaglio printing, and the printing pattern forms a color on the substrate by offset printing.

Regarding the production of the print pattern of FIG. 6A, here, a known color separation technique is used for each of the three colors Y (yellow), M (magenta), and C (cyan) in which the color original image is used for normal color printing. To separate the colors. As a result, a Y color separation image, an M color separation image, and a C color separation image having a density distribution corresponding to the pattern and the color tone of the color original image as shown in FIG. Based on this color separation image, a print pattern is prepared in accordance with the color and lightness. For example, color original image 47 shown in FIG. 7A is a mixed color of Y (yellow) and M (magenta). 48 is a single color of C (cyan). When 49 is a single color of Y (yellow), the color-separated Y-color separation image is an image as shown in FIG. The M color separation image is an image as shown in FIG.

The C color separation image is an image as shown in FIG. When pattern conversion is performed from this color-separated image, the portion 47 becomes a print pattern in which the areas of Y53 and M54 are wider than C55, as shown in FIG. As shown in FIG. 7D, the portion 48 has a printing pattern in which the area of C55 is larger than those of Y53 and M54. Reference numeral 48 denotes a pattern having the same color but having gradation, and is a print pattern in which the overall area is increased or decreased while maintaining the area ratio of the three colors. FIG. 7 (d) shows a portion 51 of FIG. 7 (d), and FIG. 7 (g) shows a portion 52 of FIG. 7 (d). .

Print on paper by offset printing using the plate produced by these color separation and pattern conversion processes, and yellow ink (Y), magenta ink (M), and cyan ink (C) of the same color as the color separation. By doing so, a forgery-preventing latent image pattern formed body before the latent image pattern is imparted is completed. In the description, offset printing is used as an explanation. However, any combination of printing method, coloring material, and printing medium can be used as long as it is the same color as the color-separated color.

FIG. 6B shows a raised pattern for each of the three colors Y (yellow), M (magenta), and C (cyan), which is used for normal color printing using a color document as a base of a pattern deposited as a latent image. The color separation is performed by a well-known color separation technique. As a result, a Y-color separation image, an M-color separation image, and a C-color separation image having a density distribution corresponding to the pattern of the color original image and its color tone as shown in FIG. For example, when the color original image 57 shown in FIG. 8A is a mixed color of M (magenta) and C (cyan) and 58 is a single color of Y (yellow), the color-separated Y color separation image is shown in FIG. The image shown in FIG. 8B is obtained, the M color separation image becomes an image shown in FIG. 8C, and the C color separation image also becomes an image shown in FIG. 8C.

Since the latent image can be visually recognized as the color of the side surface portion and the top surface portion visible from the visual recognition direction, the convex portions of the raised pattern are arranged in consideration of the color tone and shade based on the color tone separation image. As a specific explanation of the arrangement, since the color of 58 is Y (yellow), when the latent image is viewed from the bottom of FIG. It arrange | positions so that Y60 can visually recognize the side part and top surface part. Since the color of 57 is a mixed color of M (magenta) and C (cyan), when the latent image is viewed from the bottom of FIG. 8 (e), the raised portion 63 of the raised pattern is M61 of the print pattern. , C62 is disposed so as to cover the side surface and the top surface that can be visually recognized.

By printing on the anti-counterfeit latent image pattern formed by offset printing using an intaglio printing press with the intaglio printing surface produced by these color separation and ridge conversion processes, Uneven embossing is formed. This completes the forgery-preventing latent image pattern-formed body provided with the latent image.

In the description, intaglio printing is used. However, printing methods such as letterpress printing are not limited as long as uneven latent image information can be provided. Moreover, although the embossing system which does not use ink for formation of unevenness | corrugation was demonstrated, the same effect can be acquired even if it uses intaglio ink for formation of unevenness | corrugation.

The forgery-preventing latent image pattern formed body of the present invention requires unevenness of the base material for the precipitation of the latent image. Conversely, if there is no unevenness, the latent image is lost. Based on this principle, a device such as a copying machine that optically reads and produces a duplicate is effective as a forgery prevention technique because it cannot reproduce the uneven shape. Further, adding unevenness to the duplicate later is also effective as a technique for preventing forgery because the unevenness of the document is fine and the color and shade change depending on the arrangement.

As mentioned above, although embodiment was demonstrated based on Examples 1-3 based on this invention, it is not limited to the above-mentioned Example, Furthermore, various implementation is carried out within the range of the technical idea of a claim statement. It goes without saying that there are examples.

Explanatory drawing in the section which showed the principle in which the pattern which the printing pattern covered on the bulge pattern was different depending on the viewing point Layout when the printed pattern is viewed from the top, layout when the raised pattern is viewed from the top, and layout viewed from the top when the print pattern and the raised pattern are combined The figure which showed the color difference of the latent image visually recognized when the position of the convex part of a protruding pattern is changed with respect to the printing pattern of the latent image pattern formation body for forgery prevention When the surface area of the raised portion of the raised pattern is changed with respect to the print pattern in the cross-sectional view and the cross-sectional view when the counterfeit prevention latent image pattern formed body of Example 1 is viewed from the upper surface, Illustration explaining the difference The figure explaining the difference in the color when changing the area of each color of a printing pattern, when the forgery prevention latent image pattern formation body of Example 2 was visually recognized from the upper surface. Process drawing for generating printed pattern and raised pattern of latent image pattern forming body for forgery prevention of embodiment 3 The figure explaining the effect at the time of changing the area of each color of the printing pattern of the latent image pattern formation body for anti-counterfeit according to color and density at each position of the pattern of Example 3 The figure explaining the effect at the time of changing the position of the protruding pattern of the latent image pattern formation body for forgery prevention according to the color of a latent image in each position of the pattern of Example 3

Explanation of symbols

1 Substrate 2 Viewing point 3 Viewing surface (printing pattern)
4 Viewing points 5 Viewing surface (printing pattern)
6 Invisible surface (printing pattern)
7 Y (Yellow)
8 M (magenta)
9 C (cyan)
10 convex parts (raised pattern)
11 convex parts (raised pattern)
12Y (Yellow)
13M (magenta)
14C (cyan)
15 convex parts (raised pattern)
16Y (yellow)
17M (magenta)
18C (cyan)
19 convex parts (raised pattern)
20Y (yellow)
21M (magenta)
22C (cyan)
23Y (yellow) and M (magenta) mixed color 24Y (yellow), M (magenta) and C (cyan) mixed color 25Y (yellow), M (magenta) and C (cyan) mixed color 26 Viewing point 27 Viewing surface ( Printing pattern)
28 viewing points 29 viewing surface (printing pattern)
30 convex parts (raised pattern)
31Y (yellow)
32M (magenta)
33C (cyan)
34 convex parts (raised pattern)
35Y (yellow)
36M (magenta)
37C (cyan)
38 convex parts (raised pattern)
39Y (yellow)
40M (magenta)
41C (cyan)
42 convex parts (raised pattern)
43Y (yellow)
44M (magenta)
45C (cyan)
46 base material 47Y (yellow) and M (magenta) mixed color 48C (cyan)
49Y (yellow)
50M (magenta)
51C (cyan) high density 52C (cyan) low density 53Y (yellow)
54M (magenta)
55C (cyan)
56 base material 57C (cyan) and M (magenta) mixed color 58Y (yellow)
59 convex parts (raised pattern)
60Y (yellow)
61M (magenta)
62C (cyan)
63 convex parts (raised pattern)
64 intaglio
65 Intaglio 66 Intaglio Ink 67 Papermaking Network 68 Penetration Pattern (Resin)
69 paper

Claims (13)

A first region where a plurality of polygonal and / or circular first elements are arranged on a substrate surface and a second area where a plurality of polygonal and / or circular second elements are arranged The plurality of first elements are formed by recesses and / or protrusions, and the plurality of second elements are regularly arranged, and at least by two or more color materials Colored, at least a part of the second element is superimposed on the concave and / or convex portions that are the first element, a latent image pattern is formed by the arrangement of the first element, The forgery-preventing latent image is characterized in that the latent image pattern is visually recognized when at least a part of the second element becomes a blind spot by the concave portion and / or the convex portion of the first element depending on a viewing direction. Image pattern forming body. The second element superimposed on the first element is characterized in that at least a part of the plurality of second elements is superimposed on the concave portion and / or the convex portion of each of the first elements. The latent image pattern forming body for forgery prevention according to claim 1. The latent image pattern forming body for preventing forgery according to claim 1 or 2, wherein the first element has a quadrangular or hexagonal shape. The counterfeit-preventing latent image pattern formed body according to any one of claims 1 to 3, wherein the color material is ink. 5. The forgery-preventing latent image pattern formed body according to claim 1, wherein the second element has a quadrangular or hexagonal shape. 6. The visible pattern different from the latent image pattern is formed in the second region by making the respective areas of the plurality of second elements different from each other. A latent image pattern forming body for preventing counterfeiting according to claim 1. The forgery prevention device according to any one of claims 1 to 6, wherein the plurality of first elements are formed with the latent image pattern having gradation by changing the areas of the first elements. Latent image pattern forming body. The latent image pattern forming body for preventing forgery according to any one of claims 1 to 7, wherein the second region is disposed adjacent to the second region. The second region has a third element in a gap generated in an adjacent portion depending on the shape of the second element in order to improve the visibility of the latent image pattern. A latent image pattern forming body for preventing forgery according to any one of the above. The substrate surface has a first region composed of a plurality of first elements and a second region composed of a plurality of second elements, and at least a part of the second region is in the first region. A method for producing a counterfeit-preventing latent image pattern formed body, wherein a latent image pattern is formed by disposing a plurality of the first elements in the first region, wherein the surface of the base material is formed. Means for applying a first region of the plurality of first elements by polygonal and / or circular recesses and / or protrusions, and a plurality of the first elements in the first region Means for applying a plurality of the second elements in the second region colored in a polygonal and / or circular shape regularly arranged with at least one color material at a position overlapping at least a part thereof Of a latent image pattern forming body for preventing counterfeiting Method. 11. The method for producing a forgery-preventing latent image pattern formed body according to claim 10, wherein the concave portions of the plurality of first elements are formed by embossing or squeezing. The method for producing a forgery-preventing latent image pattern forming body according to claim 10, wherein the convex portions of the plurality of first elements are printed by printing with the same color or transparent ink as the base material. The method for producing a counterfeit-preventing latent image pattern forming body according to any one of claims 10 to 12, wherein the plurality of second elements are applied by printing.

Images