JP2019089255A - Forgery-proof form body and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an anti-counterfeit formed body capable of visually recognizing a latent image by varying an observation angle, although an image cannot be confirmed even when observed from a direction perpendicular to a substrate surface without using a printing method. I will provide a. SOLUTION: The present invention includes a pattern forming region including a latent image pattern formed by a group of convex image lines in which convex image lines are arranged in a line on at least a part of a base material, The region is formed by laminating a white layer, a laser coloring layer, and a transparent layer in order, and the convex image line has a convex shape on the laser coloring layer and has a wave shape on at least one side surface with the convex vertex as a boundary. A forgery prevention formed body in which a first element having a bottom surface is formed and a plurality of first elements are arranged to form a first latent image pattern. [Selection] Figure 3

Description

  The present invention provides a plastic product having security properties that is required to prevent forgery and duplication, and a plastic product with design, in which the latent image pattern appearing by changing the observation angle is further changed into a different image. The present invention relates to a forgery prevention formation and a method for producing the same.

  Due to the nature of security printed matter such as banknotes, passports, securities, etc., it is required to be hard to be forged or copied. In addition, in order to make it possible to easily determine whether or not the forgery or duplication has been made visually, the latent image is formed using the unevenness processed on the base material itself or the unevenness due to the buildup of the ink. Anti-counterfeit techniques are known that allow images to be viewed by changes.

  As a forgery-preventing technology that applies an image that can be viewed by such a change in viewing angle, the present applicant has made it possible to use any of various line patterns, relief patterns, or both patterns representing a pattern by partially changing the angle. Material with uneven shape formed by embossing, plucking or ink, with ink of different color other than color of material and colorless and transparent, various lines with fixed intervals, line by dot Or, a special latent image pattern-formed body is printed which has either parallel or inclined printing with respect to a portion constituting the portion other than the above-mentioned concavo-convex pattern, either of the drawing lines of both (patent document 1 or Patent Document 2).

  According to the technology described in Patent Document 1 or Patent Document 2 described above, when observed from the front, it is possible to confirm only any of various lines made up of straight lines at constant intervals, an image by halftone dots, or both image lines. When observed from an oblique direction, due to the uneven positional relationship generated between the uneven shape and the printing drawing line having a constant distance, the pattern formed by the uneven shape can be easily confirmed and observed from the opposite oblique direction Then, it is characterized in that the contrast of the pattern can be reversed and confirmed.

  In addition, the present applicant has described that light is reflected by a line or a pixel group arranged at a constant pitch and a line or a pixel array arranged at the same pitch as the line or pixel of a glossy convex shape. Of two areas, ie, a positive image area by a glossy convex shaped line or pixel that specularly reflects light strongly when provided at different angles, and a negative image area with low light reflection, Patent for filing a patent that enables a glossy image line to be recognized more clearly by a typical gloss difference (see Patent Document 3).

  In the present applicant, a plurality of convex drawing lines are divided into a background image part and a message image part, and the background image part and the message image part are constituted by a plurality of convex drawing lines, and the convex shape of the background image part is formed. The line width in the width direction of the ink transfer portion corresponding to the bottom of the drawing line and the convex drawing line of the message image area is constant, and as the height of the ink in the height direction of the convex drawing line becomes higher, the drawing line in the width direction The width is narrowed, and the shape in the length direction is constituted by a convexly-shaped line which changes in a wavelike manner, and the convexly-shaped line which changes in a wavelikely of the background image area Patent Document 1 discloses a printed matter configured such that at least one or more of the period, the amplitude, the phase, and the line width of the convex surface in the width direction of the convex surface are different (see Patent Document 4).

  Furthermore, the present applicant is a latent image print having an effect of changing two different latent images according to a change in the angle of incident light, and the two latent images are the right side of one stroke. Patent document 5 discloses a latent image printed matter in which one latent image is formed by cutting the surface and another latent image is formed by the cutting formed on the left side.

Patent No. 2615401 Patent No. 2600094 Patent No. 4682283 gazette Patent No. 367 3971 Patent No. 5828185 gazette

  With regard to Patent Document 1 and Patent Document 2, the latent image is visible even when viewed from directly above the substrate by laminating a relief pattern of uneven shape and a colored pattern of lines on it. Although it can not be confirmed, it is an advanced forgery prevention technology that the pattern can be confirmed as a latent image only when the substrate is tilted and viewed, but the pattern that can be checked when the substrate is tilted is 90 ° even though the tilt angle is reversed. Although it was possible to form only one pattern although the contrast was reversed, it was desirable to impart a further forgery prevention effect.

  Moreover, about patent document 3, a low gloss part is formed by providing a level | step difference in the side of a gloss convex-shaped drawing line, and two images are formed by a different angle by making it a different shape by both sides. Yes, it is efficient and low cost that it can form two images with one print and one color ink, and it is also a technology with a high anti-counterfeit effect, but two different printing films on the screen plate surface Since it was difficult to print a clear image in order to form an image, a technique capable of forming two clear images has been desired.

  Further, as for Patent Document 4, in order to finely process the intaglio printing plate surface and form a convex image line by intaglio printing, it is difficult to forge easily because it requires a high-level technology and device for the fine processing. Although the anti-counterfeit effect was high, in order to completely transfer all the ink from the microfabricated image line to the base material, it is influenced by the ink transfer condition depending on the characteristics of the ink and the printing conditions, etc., and the desired convex image It was difficult to form a line, and further improvement to a technology with manufacturing stability was desired.

  Furthermore, Patent Document 5 is a high-level forgery prevention technology that allows printing and formation in one color as in Patent Document 3 and that different images are changed depending on the observation angle. Since the line width in the width direction of the bottom of the background image line and the latent image line is not constant in certain image lines, there is a risk that significant information can be seen even at an observation angle that can not be originally confirmed. The full change effect of was desired.

  In addition, about the technique of patent documents 1-5, it is necessary to produce the plate surface for forming a pattern in all, and it is the advanced drawing design technology and processing for producing the printing plate of a fine drawing configuration. While requiring technology, there is a problem that costs such as process and staffing are also required.

  The present invention is intended to solve the above-mentioned problems, and the image can not be confirmed even when observed from the direction perpendicular to the substrate surface without using the printing method, but the observation angle is made different. Provided is an anti-counterfeit structure capable of visually recognizing a latent image pattern.

  According to the present invention, a pattern forming area provided with a latent image pattern formed by a group of convex drawing lines in which convex drawing lines are arranged in a line on at least a part of a base material is provided. Layer, a laser coloring layer and a transparent layer are sequentially laminated, and the convex drawing line is a first drawing in which the laser coloring layer has a convex shape and a wave shape is formed on at least one side surface with the convex shape as a boundary. The elements are formed with the bottom surface, and the first elements are arrayed to form a first latent image pattern, and when the pattern formation area is observed from the direction perpendicular to the substrate, the first elements and the bottom surface and However, the first latent image pattern can not be confirmed because it can not be divided, but when the substrate is tilted and observed, only the first latent image pattern can be visually recognized.

  Further, the pattern forming region in the anti-counterfeit forming body of the present invention is formed with a second element having a wave shape different from the first element on the bottom surface on the other side bordering the apex of the convex shape, A plurality of elements of 2 are arranged to form a second latent image pattern, and when viewed from the observation position of the substrate where the first latent image pattern can be visually recognized, the second latent image pattern It is characterized in that only the latent image is visible.

  Further, the first latent image pattern and the second latent image pattern in the anti-counterfeit forming body of the present invention are formed at least partially in an overlapping manner, and both of the first latent image pattern and the second latent image pattern The convex drawing line which commonly forms the latent image pattern of the second image forming apparatus comprises an overlapping area having the first element and the second element on both side faces adjacent to each other on the same single convex drawing line. It is characterized by

  Further, according to the present invention, at least a part of the substrate on which the white layer, the laser coloring layer and the transparent layer are sequentially laminated, the convex drawing line having the wave-shaped element on at least one side bordering the apex A pattern forming area provided with a latent image pattern formed by a group of convex drawing lines arranged in the form of a line, and the observation angle of the base material is made different to make the latent image visible. A manufacturing method, comprising: a reference convex drawing line group designing step of arranging reference convex drawing lines as a base of the convex drawing lines in a line, and designing a first latent image pattern as a base of the latent image pattern A latent image pattern designing step, a pattern combining step of combining a reference convex image line and a first latent image pattern in a pattern formation region, and a first step of forming a first latent image pattern on the convex line Laser irradiation to design the laser irradiation intensity irradiated to the laser coloring layer to form an element The substrate is provided with a processing step of performing laser irradiation on the base material based on the laser irradiation intensity designed in the degree design process and the laser irradiation intensity design process to form a convex drawing line having the first element of the wave shape It is a method of producing a forgery prevention formation.

  Furthermore, according to the method for producing a forgery prevention formation of the present invention, a second latent image pattern is formed on the other side bordering on the apex of the convex shape by the second element having a wave shape different from the first element. A method of manufacturing a forgery-preventing structure capable of changing two latent image patterns and making them visible by making the observation angles of the substrate different, wherein the latent image pattern designing step is based on the latent image patterns The second latent image pattern is further designed, and the pattern combining step further combines the second latent image pattern into the same latent image pattern area, and the laser irradiation intensity designing step forms the second latent image pattern. In order to form the second element of the present invention, the laser irradiation intensity to be irradiated to the laser coloring layer is designed, and the processing process is based on the laser irradiation intensity designed by the laser irradiation intensity designing step to the substrate Laser irradiation was performed to form the first element The one side of the field lines and forming a second element on the other side surface of the opposite side.

  According to the anti-counterfeit structure of the present invention, two different patterns can be formed by a plurality of convex image lines by giving different shapes to both side surfaces of one convex image line, and two observation angles can be made different. The latent image pattern can be changed and visually recognized.

  In addition, since the anti-counterfeit forming body of the present invention does not use a printing plate surface formed by exposing or corroding a convex image line, and further, does not transfer ink from the printing plate surface, There is no case of reproducibility, and laser processing can cause a clear image to appear because the streaks are formed directly on the substrate.

  In the anti-counterfeit forming body of the present invention, the elements forming the latent image pattern are formed on the side surfaces of the convex image line while leaving the bottom surface of the convex image line. The respective elements that form the same color have the same color, and the latent image pattern can not be visually recognized even when viewed from directly above the substrate, and the latent image effect is high.

  Furthermore, the anti-counterfeit forming body of the present invention produces a printing plate surface conventionally used to form a latent image pattern by laser processing to directly form convex lines and elements on a substrate. Since there is no need, costs can be reduced as the number of processes and personnel are reduced, and the image data to be the basis of the latent image pattern can be made different for each forgery prevention formation, so variable information is added. it can.

1 illustrates an example of a forgery resistant formation of the present invention. The 1st latent image pattern currently formed in the pattern formation area | region of anti-counterfeit formation body is shown. The structure of the convex drawing line group currently formed in the pattern formation area is shown. The basic convex drawing lines which comprise a convex drawing line group are shown. Fig. 2 shows a convex drawing line with a first element for forming a first latent image pattern. The effect that the first latent image pattern can be visually recognized in the anti-counterfeit structure of the present invention is shown. In another embodiment of the present invention, two latent image patterns formed in the pattern forming area are shown. In another embodiment of this invention, the structure of the convex drawing line group currently formed in the pattern formation area | region is shown. In another embodiment of the present invention, another arrangement of two latent image patterns formed in the pattern forming area is shown. Fig. 7 shows a convex drawing line with a second element for forming a second latent image pattern. Fig. 7 shows convex drawing lines arranged in overlapping areas for forming both the first latent image pattern and the second latent image pattern. In another embodiment of the present invention, the effect that two latent image patterns can be viewed is shown. Fig. 3 shows a flow chart illustrating the method for producing a forgery prevention formation of the present invention.

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

  FIG. 1 shows the anti-counterfeit formation (1) of the present invention. The anti-counterfeit forming body (1) is provided with a pattern forming area (3) in which a latent image pattern as a feature of the present invention is formed on at least a part of a substrate (2). In addition, in FIG. 1, although a passport is mentioned and demonstrated as an example of anti-counterfeit formation body (1), this invention is not limited to this, What is necessary is just a product which can form a latent image pattern.

  The base material on which the pattern forming area (3) is formed is preferably a material having high smoothness, for example, plastic. However, even if the smoothness is high, the laser irradiation light for forming the latent image is transmitted through the paper, and the latent image can not be formed, and the metal is exposed. It is not preferable because not a line but a concave line is formed. Furthermore, when a substrate with low smoothness is used, the height of the streaked line is not stabilized due to the unevenness of the substrate, and the effect of the latent image appearance at the time of observation under regular reflection light decreases. Care must be taken to gain. The substrate is composed of, from the top, a transparent layer, a laser coloring layer and a white layer. Details of each base material will be described later.

  The pattern formation area (3) has at least a first latent image pattern (4) as shown in FIG. In the present embodiment, the first latent image pattern (4) has the Japanese character "Japanese" which is the first significant information formed from the first element (8) described later.

  The pattern formation region (3) is formed by a convex drawing line group (6) in which convex drawing lines (7) of convex drawing lines are formed in a line shape as shown in FIG. In the first latent image pattern (4), the first element (8) of the wave shape for forming the character of "Japanese" of the kanji, which is the first significant information, is one of the convex image lines (7) It is formed on the side of Therefore, the convex drawing line group (6) formed in the pattern formation area (3) is formed by the convex drawing lines (7) having at least two shapes. Details of each drawing line will be described later. The apex (15) of the convex drawing line (7) means a line connecting the highest points continuously in one convex drawing line (7), and does not indicate only one point. . In the present invention, "one-line" means a state in which a plurality of drawing lines such as straight lines and curves are continuously arranged in the same direction, and not only when they are arranged at regular pitches, The pitch may be slightly different. There is no particular limitation as long as it can be recognized that a plurality of drawing lines are paralleled in the same direction with the naked eye.

  In the convex image line group (6), as shown in (a) of FIG. 4, the convex image line (7) with a convex image line width (W) of 270 μm to 370 μm is convex in the first direction (S1) The line pitch (P) is continuously arranged at 600 μm to 700 μm.

  In the present invention, as shown in FIG. 4 (b), the convex drawing line (7) has a semicircular cross section of the convex drawing line (7), but there is no particular limitation as long as the convex shape can be formed. The shape may be square or trapezoidal.

  FIG. 4C is a cross-sectional view taken along line X-X 'of FIG. As described above, the base material (2) on which at least the pattern formation area (3) is formed is composed of the transparent layer (11), the laser coloring layer (12) and the white layer (13) from above. For example, the transparent layer (11) may be a transparent polycarbonate, the laser coloring layer (12) may be a polycarbonate containing a laser coloring agent, and the white layer (13) may be a white polycarbonate.

  As shown in FIG. 4 (c), the convex drawing line (7) in the present invention is a convex of a reference designed to correspond to the pattern to be formed with respect to the base material (2) having the three layer structure described above. By performing the laser irradiation based on the data of the image group (6), the laser coloring layer (12) located in the intermediate layer reacts and has a bulge only in the irradiated part, and becomes a convex shape. As shown in the cross-sectional view of FIG. 4C, the intermediate layer, the laser coloring layer (12), reacts to form a convex shape, but the upper transparent layer (11) does not react.

  The first element (8) for forming the first latent image pattern (4) for the convex image line (7) will be described below.

  FIG. 5 (a) is a plan view of a convex drawing line (7) provided with a first element (8), and FIG. 5 (b) is a perspective view thereof. As shown in FIG. 5A, on the other hand (left side with respect to the vertex in the figure) bordering on the vertex (15) of the convex image line (7) A first element (8) for forming the character of "" is continuously disposed at a first element width (W1) and a first element pitch (P1).

  The first element width (W1) of the first element (8) is 230 μm to 330 μm, and the first element pitch (P1) of the first element (8) is formed in the range of 500 μm to 600 μm. At this time, in consideration of the visibility of the first latent image pattern (4), it is preferable to form regularly, so the first element width (W1) of the first element (8) and the first The element pitches (P1) are formed to be equal to one another. However, if the first latent image pattern (4) is formed, it may not necessarily be formed regularly. In the present invention, “regular” refers to the width (W, W1, W2) in the convex drawing line group (6), the plurality of first elements (8), and the plurality of second elements (9) described later. And pitches (P, P1, P2) are equal in each other.

  The first element (8) will be described in more detail. 5 (c) is an enlarged view of a box surrounded by a dotted line in FIG. 5 (a), and FIG. 5 (d) is a cross-sectional view taken along line Y-Y 'in FIG. 5 (c). In the first element (8), the laser coloring layer (12) reacts to laser irradiation to form a convex shape, but as shown in FIG. 5 (d), all the laser coloring layer (12) is deformed to be convex Instead of being shaped, the upper portion is deformed to have a convex shape so as to leave the bottom surface (14). Therefore, although the first element (8) has a convex shape, since the first element (8) and the bottom surface (14) have the same color, the first element (8 And the bottom surface (14), and the first latent image pattern (4) is not visible. In addition, in FIG.5 (c) and FIG.5 (d), in order to make a 1st element (8) intelligible, it has shown by the oblique line. The same applies to the second element (9) described later.

  As described above, since the convex drawing line (7) at the portion where the first element (8) is formed has the bottom surface (14), the first element (8) is formed. The line width (W) and the pitch (P) of the convex drawing line (7) also indicate the line width (W) of the convex drawing line (7) where the first element (8) is not formed. And pitch (P) are not changed. A convex drawing line (7) in which only a second element (9) described later is formed and an overlapping area (10) in which both the first element (8) and the second element (9) are formed The same applies to the convex drawing line (7).

  The element width (W1) of the first element (8) can be made a desired element width by adjusting the intensity of the laser beam to be irradiated. About the irradiation intensity of this laser beam, it is 1st element by setting suitably in the range of 0%-100% by output 16W, for example using the apparatus called nanio1064-16-V-GR made from INNOLAS. The first element width (W1) of (8) can be determined. In addition, the laser irradiation apparatus to be used is not limited to the product made by INNOLAS mentioned above, and may be an apparatus marketed generally, for example, there is an apparatus called MD-X1000 made by KEYENCE company.

  Subsequently, the effect of the present invention will be described with reference to FIG. FIG. 6A shows an observation angle indicating the viewpoint of the observer. FIG. 6A is a cross-sectional view in a first direction (S1) perpendicular to the convex drawing line group (6). In the anti-counterfeit forming body (1) of the present invention, in order to visually recognize the formed latent image pattern, it is necessary to visually recognize the first element (8) formed on one side surface of the convex image line (7). There is. Therefore, it is visually recognized from the angle which becomes substantially right-angled with respect to the tangent (Y1-Y1 ') of one side of convex drawing line (7).

  First, when observing the pattern formation area (3) from the first observation angle (L1) in the direction perpendicular to the base material (2), the first element (8) is provided with the bottom surface (14) as described above Therefore, the first element (8) can not be visually recognized, and a flat gradation is formed by a group of convex drawing lines (6) formed by a set of single convex drawing lines (7), and significant information Can not confirm anything.

  In FIG. 6 (a), a second observation angle (L2) substantially perpendicular to a tangent (Y1-Y1 ') to one side surface of the convex drawing line (7) (the left side of the convex drawing line (7) in the drawing). When the pattern formation area (3) is observed from), the first latent image pattern (4) shown in FIG. 6 (b) can be visually recognized.

  Next, another embodiment of the present invention will be described. The first latent image pattern (4) described above will not be described because it is similar, and only different configurations will be described. In another embodiment of the present invention, the pattern forming area (3) comprises two different latent image patterns.

  As shown in FIG. 7, the pattern formation area (3) is a second latent image pattern (5 of the information different from the first latent image pattern (4) and the first latent image pattern (4) described above. )have. The second latent image pattern (5) has the letters "NPB" of the alphabet which is the second significant information composed of the second element (9). Therefore, another embodiment of the present invention is characterized in that a so-called changing effect is exhibited, which changes to a different image due to the change of the observation angle.

  FIG. 8 shows a group of convex drawing lines (6) forming two different latent image patterns of the first latent image pattern (4) and the second latent image pattern (5). As shown in FIG. 8, in the pattern formation area (3), basic convex drawing lines (7), which form no latent image pattern, are arranged in a line as a background of the latent image pattern. And the first element (8) of the wave shape for forming the Japanese character of "Kanji", which is the first significant information described above, is formed on one side of the convex drawing line (7). And a wave-shaped second element (9) for forming the letters "NPB" of the alphabet, which is the second significant information, formed on the other side of the convex line (7) In order to form a portion (overlapping region (10)) in which two significant information (“Japan” and “NPB”) overlap in the portion and the pattern formation region (3), one convex drawing line (7 The first element (8) and the second element (9) are disposed on both sides of the vertex (15) of the). Therefore, the pattern formation region (3) in another embodiment of the present invention is formed by a convex drawing line group (6) in which a plurality of convex drawing lines (7) having four shapes are arranged. .

  In addition, as shown in FIG. 9, in the pattern formation area (3), two pieces of significant information may be arranged in a non-overlapping state. In this case, in one convex drawing line (7) shown in FIG. 8, the first element (8) and the second element (9) are arranged adjacent to each other with the vertex (15) as the boundary. It does not have a so-called overlapping area (10). Therefore, although it is one same convex drawing line (7), it may be formed in separate places. Although such a configuration is also within the technical scope of the present invention, it is not preferable because the pattern formation area (3) is relatively large.

  Next, the second element (9) will be described. FIG. 10 (a) is a plan view of a convex drawing line (7) provided with a second element (9), and FIG. 10 (b) is a perspective view thereof. As shown in FIG. 10, on the other side of the convex image line (7) (right side with respect to the vertex (15) in the figure), to form a letter of “NPB” of the alphabet which is the second significant information Of the second element (9) are continuously disposed at a second element width (W2) and a second element pitch (P2).

  The second element (9) is equal to the first element width (W1) and the first element pitch (P1) described above, and the second element width (W2) is 230 μm to 330 μm, and the second element The pitch (P2) is formed in the range of 500 μm to 600 μm.

  FIG. 11 (a) is a plan view of a convex drawing line group (6) showing an overlapping area (10) in which the first significant information and the second significant information are arranged in an overlapping manner, and FIG. Is its perspective view. As shown in FIG. 11 (a), the overlapping area (10) is adjacent to the vertex (15) of the convex drawing line (7), and the first element (8) on the other side, the other side And the second element (9) is arranged in succession.

  First element width (W1) and first element pitch (P1) of first element (8), second element width (W2) of second element (9) and second element pitch (P2) P2) may be the same or different. FIG. 11 shows that the element width (W1, W2) and the element pitch (P1, P2) are both different.

  Next, the effect of another embodiment of the present invention will be described using FIG. FIG. 12A shows an observation angle indicating the viewpoint of the observer. FIG. 12A is a cross-sectional view in a first direction (S1) perpendicular to the convex drawing line group (6). As in the case where only the first latent image pattern (4) described above is formed, in another embodiment of the present invention, in order to visually recognize the formed second latent image pattern (5), a convex image is formed. Visualize from an angle substantially perpendicular to the tangent (Y2-Y2 ') of the other side of the line (7).

  First, when observing the pattern formation area (3) from the first observation angle (L1) in the direction perpendicular to the substrate (2), both the first element (8) and the second element (9) Since the bottom surface (14) is provided, the first element (8) and the second element (9) are not visible, and a group of convex drawing lines formed by a set of single convex drawing lines (7) According to 6), a flat gradation is configured, and no significant information can be viewed.

  As described above, in FIG. 12A, the second line perpendicular to the tangent (Y1-Y1 ') to one side surface of the convex drawing line (7) (the left side of the convex drawing line (7) in the drawing) When the pattern formation area (3) is observed from the observation angle (L2), the first latent image pattern (4) shown in FIG. 12 (b) can be visually recognized.

  Further, in FIG. 12 (a), the observation angle is changed with the apex of the convex drawing line (7) as the boundary, and the other side of the convex drawing line (7) (the right side of the convex drawing line (7) in the drawing) When observing the pattern formation area (3) from the third observation angle (L3) substantially perpendicular to the tangent line (Y2-Y2 '), the second latent image pattern (5) shown in FIG. be able to. Naturally, the reverse is also true, and the present invention changes the observation angle between the second observation angle (L2) and the third observation angle (L3) at the apex of the convex drawing line (7). The first latent image pattern (4) and the second latent image pattern (5) can be changed and visually recognized. When one latent image pattern is viewed, the other latent image pattern disappears and can not be viewed.

  Next, a method of producing the forgery prevention formation (1) of the present invention will be described using the flowchart of FIG. FIG. 13 shows a method of producing a forgery prevention formation. As shown in FIG. 13, the method for producing the anti-counterfeit forming body (1) of the present invention includes a reference convex drawing line group designing step, a latent image pattern designing step, a laser irradiation intensity designing step, and a pattern synthesizing step. It consists of processing steps.

  First, in the reference convex drawing line group design step, data of the convex drawing line group as a reference in which the convex drawing lines (7) of the convex drawing line shown in FIG. Design using general image creation software such as Adobe's PhotoShop.

  Next, in the latent image pattern designing step, the first element (8) of the wave shape for forming the character of "Japanese" of the kanji which is the first significant information is the vertex (7) of the convex drawing line (7) 15) Design data of the first latent image pattern (4) formed on one side bordering on the border. At this time, as in the other embodiment of the present invention described above, when the second latent image pattern (5) is also formed, the second significant information “NPB” of the alphabet is also used. The second latent image (5) of the second latent image (5) formed on the other side bordering the apex (15) of the convex drawing line (7) with the wave-like second element (9) for forming characters Also design data.

  Next, the pattern combining step combines the data of the reference convex drawing line group designed in the reference convex drawing line group designing step with the data of the first latent image pattern (4) prepared in the latent image pattern designing step, The data of a convex drawing line group (6) having two shapes as shown in FIG. 3 is prepared. At this time, when the second latent image pattern (5) is also formed as in the other embodiment of the present invention described above, the data of the second latent image pattern (5) is also synthesized, Data of a convex drawing line group (6) having four shapes as shown in FIG. 8 are prepared.

  The laser irradiation intensity designing step sets the irradiation intensity of the laser beam and the scanning direction of the laser. In the present embodiment, as described above, the convex scanning line group of the laser scanning direction is set based on the image data created in the pattern combining process within the range of 0% to 100% at the output 16 W The direction of irradiation was set perpendicular to 6).

  Finally, in the processing step, the data of the synthesized latent image pattern is output to the substrate (2) on which the pattern formation region (3) is formed at the set laser irradiation intensity. When the pattern formation area (3) is observed while changing the observation angle with respect to the processed base material (2) and only the first latent image pattern (4) is formed, the first latent image pattern When the second latent image pattern (5) is also combined to form two latent image patterns, the first latent image pattern (4) and the second latent image pattern 5) Confirm visually that it is visible.

  Hereinafter, although the Example of the forgery prevention formation (1) specifically created according to the form for implementing the above-mentioned invention is described in detail, this invention is not limited to this Example.

  The example is an example of the forgery prevention formation (1) on which two latent image patterns (4, 5) are formed as described in the other embodiments of the present invention, using FIG. 1 to FIG. explain. FIG. 1 shows a forgery prevention formation (1) of the embodiment. The forgery prevention formation (1) of this embodiment is a passport, as specifically shown in FIG. The anti-counterfeit structure (1) has a pattern forming area (3) on a part of the substrate (2).

  As shown in FIG. 4 (c), this substrate (2) was formed by sequentially laminating a white layer consisting of white polycarbonate, a laser coloring layer consisting of polycarbonate containing a laser coloring agent, and a transparent layer consisting of a transparent polycarbonate. A TRUB polycarbonate card was used.

  The first latent image pattern (4) and the second latent image pattern (5) formed in the pattern formation region (3) are, as shown in FIG. The second significant information alphabet "NPB" letters.

  The pattern formation area (3) is, as shown in FIG. 8, a reference convex image line (7), a first element (8) for forming a first latent image pattern (4), and a second latent image. A second element (9) for forming the image pattern (5), and a first element (for forming both the first latent image pattern (4) and the second latent image pattern (5) 8) comprising an overlapping area (10) with a second element (9).

  The standard convex drawing line group (6) shown in FIG. 4 is formed by continuously arranging convex drawing lines (7) having a drawing line width (W) of 317.5 μm at a pitch of 635 μm. The convex drawing line group (6) has no significant information, and a flat gradation is formed by a set of single drawing lines.

  Next, as shown in FIG. 5, the pattern forming area (3) having only the first significant information has one side surface bordering the apex (15) of the reference convex drawing line (7) as the concavo-convex shape. The first element (8) had a first element width (W1) of 280 μm and a first element pitch (P1) of 560 μm.

  Next, as shown in FIG. 10, the pattern forming area (3) having only the second significant information has the other side surface bordering the apex (15) of the reference convex drawing line (7) as the concavo-convex shape. The second element (9) was formed to have a second element width (W2) of 240 μm and a second element pitch (P2) of 500 μm.

  Furthermore, as shown in FIG. 11, the overlapping area (10) having both the first significant information and the second significant information is both sides bordering on the vertex (15) of the reference convex drawing line (7). On the other hand, as described above, the first element (8) is formed on one side surface, the first element pitch (P1) is formed with a first element width (W1) 280 μm and 560 μm, and the second side is formed on the other side. Element (9) was formed with a second element width (W2) of 240 μm and a second element pitch (P2) of 500 μm.

  The effect of the obtained anti-counterfeit formation (1) was confirmed. FIG. 12 shows the effect of the present invention. In FIG. 12 (a), when the pattern formation area (3) is observed from the first observation angle (L1), a convex drawing line group (6) formed by a set of single convex drawing lines (7) It constituted flat gradation and could not confirm any significant information. A pattern formation area (3) from a second observation angle (L2) substantially perpendicular to a tangent (Y1-Y1 ') to one side surface (the left side of the convex drawing line (7) in the figure) of the convex drawing line (7) Was observed, it was possible to visually recognize “Japan” which is the first latent image pattern (4) shown in FIG. 12 (b). A pattern formation area (3) from a third observation angle (L3) substantially perpendicular to a tangent (Y2-Y2 ') to the other side surface of the convex drawing line (7) (right side of the convex drawing line (7) in the figure) ) Was able to visually recognize “NPB” which is the second latent image pattern (5) shown in FIG. 12 (c).

Reference Signs List 1 anti-counterfeit forming body 2 base material 3 pattern forming area 4 first latent image pattern 5 second latent image pattern 6 convex drawing line group 7 convex drawing line 8 first element 9 second element 10 overlapping area 11 transparent Layer 12 laser coloring layer 13 white layer 14 bottom surface 15 vertex W convex image line width W1 first element width W2 second element width P convex image line pitch P1 first element pitch P2 second element pitch L1 first Observation angle L2 Second observation angle L3 Third observation angle

Claims (5)

At least a part of the substrate is provided with a pattern formation area provided with a latent image pattern formed by a group of convex drawing lines in which convex drawing lines are arranged in a line of linear form;
The pattern forming area is formed by sequentially laminating a white layer, a laser coloring layer and a transparent layer,
The convex image line is formed such that the laser coloring layer has a convex shape, and a first element having a wave shape on at least one side surface has a bottom surface bordering the apex of the convex shape,
A plurality of the first elements are arranged to form a first latent image pattern,
When the pattern formation area is observed in a direction perpendicular to the base material, the first latent image pattern can not be confirmed because the first element and the bottom surface can not be divided, but the base material is tilted and observed Then, only the first latent image pattern can be visually recognized. The pattern forming region is formed on the other side surface of the convex shape with the bottom surface provided with a second element having a wave shape different from the first element.
A plurality of the second elements are arranged to form a second latent image pattern,
Only the second latent image pattern can be viewed when observed from the observation position of the base material where the first latent image pattern can be viewed, by tilting in the opposite direction with the vertex as the border. Description anti-counterfeit formation. The first latent image pattern and the second latent image pattern are formed so as to at least partially overlap each other,
The convex image lines that commonly form both the latent image patterns of the first latent image pattern and the second latent image pattern are adjacent to each other across the vertex in the same one of the convex image lines The anti-counterfeit structure as claimed in claim 2, further comprising an overlapping area having the first element and the second element on both sides. On at least a portion of the substrate on which the white layer, the laser coloring layer and the transparent layer are sequentially laminated, convex drawing lines having wave-shaped elements are arrayed in a line form on at least one side bordering the apex. A pattern forming region provided with a latent image pattern formed by a group of convex image lines, wherein the observation angle of the substrate is made different to make the latent image pattern visible. ,
A reference convex line group design step of arranging reference convex lines forming the basis of the convex lines in a line shape;
A latent image pattern designing step of designing a first latent image pattern to be a basis of the latent image pattern;
A pattern combining step of combining the reference convex image line and the first latent image pattern in the pattern formation region;
A laser irradiation intensity designing step of designing a laser irradiation intensity to be irradiated to the laser coloring layer in order to form a first element for forming the first latent image pattern on the convex image line;
Based on the laser irradiation intensity designed in the laser irradiation intensity designing step, the base material is subjected to laser irradiation to form the convex line having the first element of the wave shape. Method of making anti-counterfeit formations. A second latent image pattern is formed by the second element of the wave shape different from the first element on the other side surface bordering the apex of the convex shape, and the observation angle of the substrate is made different. A method of manufacturing an anti-counterfeit structure, wherein two latent image patterns are changed and visible;
The latent image pattern designing step further designs the second latent image pattern which is the basis of the latent image pattern,
The pattern combining step further combines the second latent image pattern in the same latent image pattern area,
The laser irradiation intensity designing step designs a laser irradiation intensity to be irradiated to the laser coloring layer in order to form a second element for forming the second latent image pattern.
The said process process performs laser irradiation with respect to the said base material based on the laser irradiation intensity | strength designed by the said laser irradiation intensity | strength design process, One side of the said convex image line in which the said 1st element was formed The method according to claim 4, wherein the second element is formed on the other side opposite to.

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