JP3624250B2 - True / false discriminating laminate - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a laminate capable of authenticating authenticity, which is applied to valuable printed materials that need to prevent counterfeiting, copying, and falsification of pass tickets, passports, cards, and the like.
[0002]
[Prior art]
Due to the nature of precious printed matter such as passports, passports, and cards, it is required that they are not counterfeited or tampered with. As a measure against tampering, traditionally, passports, cards, etc. are provided with information such as letters, symbols, facial photographs, etc. on the surface of the base material, a transparent plastic sheet is stuck on the surface and laminated, and letters, symbols, We try to prevent falsification of face photos. Furthermore, it can be said that authenticity determination technology that can determine whether or not the precious printed matter is counterfeited is indispensable.
[0003]
Techniques for determining authenticity by allowing the latent image to be confirmed by observing the printed material at an angle are well known, using the image line configuration of the intaglio printed material, and using the uneven substrate and the printed image line And those using a lenticular plate.
[0004]
As a method of confirming the latent image using the image line structure, the latent image cannot be confirmed when the printing surface is observed from directly above by intaglio printing an image composed of vertical and horizontal lines on the printing substrate. Discloses a method in which a latent image is visualized by changing the angle of the printing surface (see Japanese Patent Publication No. 56-19273).
[0005]
As a method for confirming a latent image using an uneven substrate and a printed image line, various line patterns or relief patterns of the same color as or similar to the printing material, and a raised image line of either of these patterns, When observing from a certain direction by combining any one of the various line-drawing lines or halftone-dotting lines with a fixed interval different from the color of the raised lines, or both of them. However, there is disclosed a latent image printed material and a printing method thereof in which specific characters, designs, etc. can be recognized (see Japanese Patent No. 2600094).
[0006]
It is disclosed as a calendar that uses a lenticular plate, for example, the calendar display of the current month and the next month can be selectively viewed by changing the observation angle using the lenticular plate (see Japanese Utility Model Publication No. 51-67043). ).
[0007]
[Problems to be solved by the invention]
In the method of Japanese Examined Patent Publication No. 56-19273, when the print surface is viewed from directly above, the design of the latent image is easily confirmed by the vertical and horizontal image line composition constituting the print image. I need. Further, since the latent image is not developed from the direction of the line, and only appears in the direction perpendicular to the line, the effect of determining whether the image is genuine is low. Japanese Patent No. 2615401 has a drawback that it is difficult to print a material having a concavo-convex shape and various line drawing or halftone drawing lines. Japanese Utility Model Publication No. 51-67043 is expensive because it uses a lenticular plate, and the lenticular lens itself is thick and the product itself is thick, so it is not suitable for thin printed materials. Since it has a shape, it is easily deformed and may be damaged.
[0008]
From the above, the present invention aims to solve the above-mentioned problems, and when observed from the vertical direction with respect to a laminate capable of determining authenticity, an uneven pattern with an ink pile cannot be confirmed. However, since it is possible to visually recognize the concavo-convex pattern when observed from an oblique direction, when observed by irradiating with white light, when observed by irradiating energy rays, anyone can easily determine authenticity.
[0009]
In the present invention, since a latent image is formed by printing on a substrate without forming a latent image by using an image line structure, a lenticular lens is formed without being restricted by design. It can be applied to thin products without using it, and it is possible to make latent images appear in a plurality of different viewing directions by design. Anyone can determine authenticity on the spot without using an authenticity determination device. be able to.
[0010]
[Means for Solving the Problems]
The present invention includes a first layer on which a concavo-convex pattern having an ink height is printed on a base material using at least one ink of the same color as the base material, a hue ink similar to the base material, and a transparent ink; In the laminate capable of authenticating authenticity, in which a second layer made of an adhesive and a third layer printed with a line pattern or a halftone dot pattern are sequentially laminated on a light transmissive substrate, A layered product having a layer printed with a line pattern or a halftone dot pattern of the third layer adhered to the layer and laminated with the second layer, wherein the authenticity determination is performed. When observed from a vertical direction with respect to a possible laminate, the concavo-convex pattern cannot be confirmed, but the concavo-convex pattern is visually recognized when observed obliquely or when irradiated with white light. It is a layered product capable of authenticating authenticity.
[0011]
In the first aspect of the present invention, an uneven pattern having an ink height is printed on a base material using at least one of the same color as the base material, a color ink similar to the base material, and a transparent ink. In the laminate capable of authenticating authenticity, which is formed by sequentially laminating a layer, a second layer made of an adhesive, and a third layer printed with a line pattern or a halftone dot pattern on a light-transmitting substrate, A region having a concavo-convex pattern of one layer has a concealment pattern printed with colored ink, and a line pattern or a halftone dot pattern of the third layer is printed on the first layer having the concealment pattern A layered product that can be discriminated between authenticity and laminated with the second layer bonded to the second layer, and the concave-convex pattern cannot be confirmed when observed from a vertical direction with respect to the layered product capable of discriminating authenticity Light of the same color as or similar to that of the colored ink. When viewed shines a authenticity discrimination possible laminate, characterized in that said uneven pattern is visible.
[0012]
In the first aspect of the present invention, an uneven pattern having an ink height is printed on a base material using at least one of the same color as the base material, a color ink similar to the base material, and a transparent ink. In the laminate capable of authenticating authenticity, which is formed by sequentially laminating a layer, a second layer made of an adhesive, and a third layer printed with a line pattern or a halftone dot pattern on a light-transmitting substrate, A concealing pattern printed with colored fluorescent ink on a region having a concavo-convex pattern of one layer, and a solid pattern printed with colorless fluorescent ink that emits light of the same color or an approximate hue when irradiated with energy rays with the colored fluorescent ink; The first layer having a pattern and the solid pattern can be discriminated from the surface on which the line pattern or halftone dot pattern of the third layer is bonded and laminated by the second layer. A laminate, When observed from a vertical direction with respect to a laminate capable of being falsely identified, the uneven pattern cannot be confirmed, but the uneven pattern is visually recognized when observed by irradiating energy rays. It is a possible laminate.
[0013]
Further, the uneven pattern of the present invention is a laminate capable of authenticating authenticity, characterized in that it is at least one of letters, numbers, symbols and patterns.
[0014]
Further, the concavo-convex pattern of the present invention is a laminate capable of authenticating authenticity, which is produced by intaglio printing or stencil printing.
[0015]
Further, the line pattern printed on the light-transmitting substrate of the present invention is a layered body capable of authenticity determination, characterized in that it has 150 to 300 line patterns per inch.
[0016]
In addition, the halftone dot pattern printed on the light-transmitting substrate of the present invention has a screen line number of 150 to 300 lines, and a dot area ratio of 30% to 70%. It is a laminate that can be distinguished.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows the basic principle of the present invention. FIG. 1A shows a concavo-convex-patterned base material 1 in which a concavo-convex pattern A having an ink deposit of “A” is produced by intaglio printing or the like. FIG. 1B shows a light transmissive substrate 2 on which a line pattern (or a halftone dot pattern) 3 is printed. As shown in FIGS. 1 (c) and 1 (d), the authenticity is obtained by laminating the surface on which the line pattern 3 of the light-transmitting substrate 2 is printed on the substrate 1 with an uneven pattern with an adhesive layer 4. The discriminable laminate 5 is shown. In FIG. 1C, a light-transmitting substrate 2 is laminated on the entire surface of the substrate 1 with an uneven pattern, and FIG. 1D shows a light-transmitting group in the region of the uneven pattern A of the substrate 1 with an uneven pattern. Material 2 is laminated. The effects of the present invention can be achieved in both cases of FIG. 1C and FIG. The layered body 5 that can determine authenticity is transmitted through normal light (daily light such as sunlight) around the convex portion of the concavo-convex pattern A provided on the concavo-convex pattern base material 1 by intaglio printing or the like. The shadow 6 due to the line pattern 3 of the conductive substrate 2 is generated.
[0018]
As shown in FIG. 2, when observed from the vertical direction with respect to the laminate 5 capable of authenticating authenticity, the concavo-convex pattern provided on the concavo-convex pattern-containing base material is formed by the line pattern 3 printed on the light-transmitting base material 2. Camouflaged and cannot be confirmed. In addition, since the laminate 5 that can determine authenticity is observed from the vertical direction, the convex portion of the concavo-convex pattern A provided on the concavo-convex patterned base material by intaglio printing or the like is used for the light-transmitting base material. It is not affected by the shadow of the line pattern 3. That is, when observed from the vertical direction, only the line pattern 3 provided on the light transmissive substrate 2 is confirmed.
[0019]
As shown in FIG. 3, when the laminate 5 capable of authenticating authenticity is observed from an oblique direction or when observed by irradiating white light from an oblique direction, the convexities provided on the concavo-convex patterned substrate 1 by intaglio printing or the like Since the shadow 6 due to the line pattern 3 of the light transmissive substrate 2 can be observed from the non-image portion 7 of the light transmissive substrate 2 around the concavo-convex pattern A, the line of the light transmissive substrate 2 The shadow 6 by the pattern 3 can be confirmed, the area of the non-image portion 7 can be confirmed darker than the uneven pattern A, and “A” which is the uneven pattern can be confirmed. FIG. 3 (a) is a view of the laminate that can be identified as authenticity from an oblique direction, and FIG. It is a figure at the time of observing from.
[0020]
However, if the pattern applied to the light-transmitting substrate is a line pattern, if both the illumination direction and the observation direction are in the direction of the line or directly above, or exactly the same, check the generated shadow Since it cannot be confirmed, the uneven pattern “A” cannot be confirmed, but the illumination direction and the observation direction may be arbitrary as long as other conditions are satisfied. Moreover, when the pattern provided to the light-transmitting substrate is a halftone dot pattern, the illumination direction and the observation direction may be arbitrary except for the case where the illumination direction and the observation direction are exactly the same.
[0021]
The light transmissive substrate used in the present invention may be a plastic, a laminate film, or the like. When the pattern applied to the light transmissive substrate is the above-described line pattern, the number of lines is about 150 to 300 per inch. If there is a number, the concavo-convex pattern can be confirmed. In addition, the same effect can be obtained with a halftone dot pattern. In the case of a halftone dot pattern, if the number of lines is 150 to 300 and the halftone dot area ratio is 30% to 70%, the uneven pattern can be confirmed. The halftone dot shape is not particularly limited, and square dots, chain dots, round dots, special halftone dots, and the like can be used. The line shape is not particularly limited, and a parallel line, a wave line, or the like can be used. In addition, each pattern to be applied to the light-transmitting substrate only needs to have high opacity for generating a shadow. If the opacity is high, white other than black is also possible, and the pattern is particularly limited. It is not something.
[0022]
In addition, as shown in FIG. 4, the concave / convex pattern 8 is formed on the region having the concave / convex pattern A of the substrate 1 with the concave / convex pattern on which the concave / convex pattern A having the ink pattern “A” is produced by intaglio printing or the like. The confidentiality of A can be improved. In FIG. 4, the concealment pattern 8 is printed on the concavo-convex pattern A and the peripheral area of the concavo-convex pattern A. However, the concealment pattern 8 may be provided on the entire surface of the substrate including the concavo-convex pattern. The region having a concavo-convex pattern according to claim 2 indicates the region of the concavo-convex pattern A, the concavo-convex pattern A and the peripheral region of the concavo-convex pattern A, and the entire region of the substrate with the concavo-convex pattern having the concavo-convex pattern A. In order to impair the visibility of the concavo-convex pattern A when colored light is applied to the light-transmitting base material 2 on which a concealment pattern 8 is applied using colored ink and a line pattern or printed pattern is laminated, By irradiating light of the same color as ink or a hue similar to that of ink (white light is passed through a color filter or a light emitting diode is used), a decrease in the visibility of the concavo-convex pattern A due to the masking pattern 8 can be suppressed. The masking pattern 8 of the present invention is not particularly limited and can be a chromatic pattern, minute characters, solids, or a normal pattern. The colored ink of the present invention is not particularly limited. However, when black ink is used, the effect of the present invention cannot be obtained if the printed pattern is solid.
[0023]
In addition, as shown in FIG. 5, the concavity and convexity pattern is formed by the concealed pattern 8 with the colored fluorescent ink as shown in FIG. 5 and the colorless fluorescent ink that develops the same or similar hue as the colored fluorescent ink when irradiated with energy rays such as ultraviolet rays. By making the solid pattern 9 over the entire surface, it is possible to make only the concavo-convex pattern A visible by making the colored fluorescent ink invisible when irradiated with energy rays such as ultraviolet rays. In addition, as long as it colors with the same color or the hue approximated at the time of irradiation, such as an ultraviolet-ray, a color fluorescent ink may use multiple colors for the same area | region. In FIG. 5, the concealment pattern 8 and the solid pattern 9 are printed in the peripheral area of the concavo-convex pattern A and the concavo-convex pattern A. However, the concealment pattern 8 and the solid pattern 9 may be provided on the entire surface of the substrate including the concavo-convex pattern. The region having the concavo-convex pattern according to claim 3 indicates the region of the concavo-convex pattern A, the peripheral region of the concavo-convex pattern A and the concavo-convex pattern A, and the entire region of the substrate with the concavo-convex pattern having the concavo-convex pattern A.
[0024]
The concavo-convex pattern of the present invention may be applied using stencil printing such as screen printing in addition to intaglio printing. Further, if the height of the unevenness is about 5 microns or more, the discrimination is possible. Moreover, the base material should just have the smoothness of the grade which does not inhibit the provided unevenness | corrugation. Moreover, the authenticity discrimination effect is improved by making the concavo-convex pattern a character, a symbol, or a picture.
[0025]
As the substrate with a concavo-convex pattern of the present invention, paper sheets, films, plastics, metals and the like can be used.
[0026]
Moreover, in order to laminate | stack a base material with a concavo-convex pattern and a light transmissive base material in this invention, it is necessary to provide an adhesive layer between a base material with a concavo-convex pattern and a light transmissive base material.
[0027]
【Example】
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.
[0028]
(Example 1)
In order to give unevenness to the substrate, an intaglio ink having the same color as that of the substrate was prepared, and an intaglio printing was performed to give a convex pattern. 150 lines of parallel lines are printed on the surface of the film that can transmit light, and the surface with the parallel lines of the film is adhered to the place where the convex pattern of the substrate is applied with an adhesive. Lamination was performed to produce a laminate capable of authenticating. When observed from the vertical direction with respect to the laminate capable of authenticating authenticity, a convex pattern could not be confirmed, but when observed from an oblique direction, a convex pattern could be confirmed. Moreover, the convex pattern was able to be confirmed by irradiating the surface which laminated | stacked the film with white light (this example utilized the flashlight) and observing. Moreover, even if it irradiated with white light from the front and observed, the convex pattern was able to be confirmed.
[0029]
(Example 2)
In order to give unevenness to the base material, a stencil ink having the same color as the base material was prepared, and a convex pattern was given by performing stencil printing. In order to reduce the visibility of the convex pattern, a concealing pattern using colored fluorescent ink that emits red when observing under visible light and red when observing under ultraviolet light so as to overlap the convex pattern In addition, the solid pattern is offset and printed so that the entire area is covered with the colorless fluorescent ink that emits red light of the same color as the colored fluorescent ink when observed under ultraviolet light. Printed. 150 lines of parallel lines are printed on the surface of the film that can transmit light, and the surface with the parallel lines of the film is adhered to the place where the convex pattern of the substrate is applied with an adhesive. Lamination was performed to produce a laminate capable of authenticating. When observed from the perpendicular direction to the laminate that can determine authenticity, a convex pattern could not be confirmed, but by irradiating and observing with ultraviolet rays, the solid pattern emitted red, and red colored fluorescence Since it became the same color as the concealment pattern printed with ink, it was difficult to visually recognize the concealment pattern, so only a convex pattern could be confirmed.
[0030]
(Example 3)
In order to give unevenness to the substrate, a transparent intaglio ink was prepared and intaglio printing was performed to give a convex pattern. In order to reduce the visibility of the convex pattern, a concealing pattern was printed with a normal red colored ink so as to overlap the convex pattern. 150 lines of parallel lines are printed on the surface of the film that can transmit light, and the surface with the parallel lines of the film is adhered to the place where the convex pattern of the substrate is applied with an adhesive. Lamination was performed to produce a laminate capable of authenticating. When observing from a vertical direction for a laminate that can determine authenticity, a convex pattern could not be confirmed, but it was observed by irradiating light through a red filter of the same color as the colored ink on which the concealment pattern was printed. By irradiating the red light source, it became the same color as the concealment pattern printed with the red colored fluorescent ink, so it was difficult to see the concealment pattern, so only the convex pattern could be confirmed. .
[0031]
Although the present invention has been described based on the embodiment of the present invention, the present invention is not limited to this embodiment, and various other implementations are possible within the scope of the technical idea described in the claims. Possible forms.
[0032]
【The invention's effect】
In the present invention, when observed from the vertical direction with respect to a laminate capable of authenticating authenticity, an uneven pattern with ink marks cannot be confirmed, but when observed from an oblique direction, when observed by irradiating white light, energy rays Since it is possible for anyone to easily determine the authenticity of the uneven pattern when observing it, it is necessary to prevent counterfeiting, copying, and falsification of passports, passports, cards, etc. Can be applied to valuable prints.
[0033]
In addition, even if it is difficult to identify the shape of the concavo-convex pattern by printing a pattern different from the concavo-convex pattern on the region having the concavo-convex pattern, it is possible to easily identify only the shape of the concavo-convex pattern. .
[0034]
In addition, since the present invention does not require printing of the uneven pattern provided on the substrate and the line pattern or halftone dot pattern printed on the light transmissive substrate, it can be easily produced and printed on the light transmissive substrate. The shadow of the line pattern or halftone dot pattern is reflected in the concave and convex portions of the concavo-convex pattern, and the concavo-convex pattern can be recognized from the non-image area of the line pattern or halftone dot pattern printed on the light-transmitting substrate. I do not receive it. In addition, since the laminate capable of discriminating authenticity of the present invention does not need to use a discriminator, the cost, installation space, etc. of the discriminator can be suppressed.
[0035]
The present invention does not form a latent image using the image line configuration, forms a latent image on the base material by unevenness, and is not limited by design, without using a lenticular lens, and can be applied to a thin product. It is possible to deal with it, and it is possible to make a latent image appear in a plurality of different viewing directions in design, and anyone can determine authenticity on the spot without using an authenticity determination device or the like.
[0036]
[Brief description of the drawings]
FIG. 1 is a diagram showing the basic principle of the present invention.
FIG. 2 is a diagram showing a case where a laminate capable of authenticating in the present invention is observed from a vertical direction.
FIG. 3 is a diagram showing a case where a laminate capable of authenticating in the present invention is observed from an oblique direction or observed by irradiating white light.
FIG. 4 is a diagram showing a hiding pattern with colored ink in the present invention.
FIG. 5 is a view showing a concealing pattern using a fluorescent ink in the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base material with uneven pattern 2 Light transmissive base material 3 10,000 line pattern or halftone dot pattern 4 Adhesive layer 5 Laminate 6 which can authenticate authenticity Shadow 7 Non-image area 8 Hiding pattern 9 Solid pattern

Claims (7)

From the adhesive, a first layer printed with an uneven pattern having an ink height using at least one ink of the same color as the base material, an ink having a hue similar to the base material, and a transparent ink. In the laminate capable of authenticating authenticity formed by sequentially laminating the second layer and the third layer in which the line pattern or the dot pattern is printed on the light transmissive substrate,
A layered body capable of authenticating authenticity, wherein the first layer is laminated by laminating the surface on which the line pattern or halftone dot pattern of the third layer is printed with the second layer,
The concavo-convex pattern cannot be confirmed when observed from a vertical direction with respect to the laminate capable of determining authenticity, but the concavo-convex pattern can be visually recognized when observed from an oblique direction. Laminated body. From the adhesive, a first layer printed with an uneven pattern having an ink height using at least one ink of the same color as the base material, an ink having a hue similar to the base material, and a transparent ink. In the laminate capable of authenticating authenticity formed by sequentially laminating the second layer and the third layer in which the line pattern or the dot pattern is printed on the light transmissive substrate,
The first layer having a concealed pattern printed with colored ink in the region having the concavo-convex pattern of the first layer, and the line pattern or halftone dot pattern of the third layer is printed on the first layer having the concealed pattern A layered product capable of authenticating authenticity, wherein the surface being bonded is laminated with the second layer,
When observed from the vertical direction with respect to the laminate capable of authenticating authenticity, the uneven pattern cannot be confirmed, but the unevenness is observed when obliquely irradiated with light of the same color as or similar to that of the colored ink. A laminate capable of authenticating authenticity, wherein a pattern is visually recognized. From the adhesive, a first layer printed with an uneven pattern having an ink height using at least one ink of the same color as the base material, an ink having a hue similar to the base material, and a transparent ink. In the laminate capable of authenticating authenticity formed by sequentially laminating the second layer and the third layer in which the line pattern or the dot pattern is printed on the light transmissive substrate,
The concealed pattern printed with colored fluorescent ink on the region having the concavo-convex pattern of the first layer and the solid pattern printed with colorless fluorescent ink that emits light of the same color or an approximate hue when irradiated with energy rays with the colored fluorescent ink, Authenticity obtained by laminating the surface on which the line pattern or halftone dot pattern of the third layer is bonded to the first layer having the concealment pattern and the solid pattern and laminated with the second layer A distinguishable laminate,
When observed from the vertical direction with respect to the laminate capable of authenticating authenticity, the uneven pattern cannot be confirmed, but the uneven pattern is visually recognized when observed obliquely by irradiating energy rays. A layered product that can be discriminated. The laminate according to claim 1, 2 or 3, wherein the uneven pattern is at least one of letters, numbers, symbols and patterns. 5. The laminate capable of authenticating authenticity according to claim 1, wherein the concavo-convex pattern is produced by intaglio printing or stencil printing. 6. The line pattern printed on the light transmissive substrate is a line pattern of 150 to 300 lines per inch. Laminated body. The halftone dot pattern printed on the light-transmitting substrate has a screen line number of 150 to 300 lines and a dot area ratio of 30% to 70%. 4. A laminate capable of discriminating authenticity according to 4 or 5.

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