JP6323810B2 - Formed body having visible pattern assimilated with moire pattern and method for producing the same - Google Patents

Description

  The present invention uses a moire pattern in the fields of banknotes, passports, securities, identification cards, cards, and passports, which are security prints that require anti-counterfeiting effects. The present invention relates to a formed body that makes a visible pattern invisible with changes, and a method for manufacturing the formed body.

  Countermeasures against counterfeiting and falsification are important factors in banknotes, stock certificates, securities such as bonds, printed materials such as various certificates and important documents. These anti-counterfeiting and tampering measures for printed materials can be recognized visually by mainly using a method in which designs with diversified geometric patterns are used in the design and applying some means and actions to the printed material. There is a way to display a latent image that did not exist. Typical examples of the former include tint blocks, color patterns, and relief patterns that are widely used in the design of securities prints, etc., while the latter is a typical example of latent image intaglios and color copiers. There are functional inks that cannot be reproduced, and copy prevention image lines.

  Forgery and tampering prevention measures using a geometric pattern include a ground pattern, a chromatic pattern, a relief pattern, etc., and a pattern is basically constituted by a set of curved lines with a fixed line width. These patterns take into account design properties such as the design of printed matter, and can take measures to prevent counterfeiting and tampering. By making the pattern complicated, it is difficult to produce the same pattern on the counterfeit material. Role as a counterfeit prevention measure by generating moiré patterns for scanning input / output of color copiers, monochrome copiers, or scanners by using colors that are difficult to reproduce on copiers, or using complex curved lines Is increasing.

  As for the technique using the moire pattern, not only a copy prevention technique but also a number of anti-counterfeit techniques using the expression of the moire pattern by visually changing the observation angle have been developed.

  For example, a first pattern composed of colored lines having the same pitch and a second pattern composed of pixels having line-shaped irregularities so as to share at least part of the first pattern are formed. In the printed matter, a printed matter having a latent image pattern that generates a latent image by the second pattern when the printed matter is tilted in a direction orthogonal to the lines of the first pattern and the first pattern is observed is disclosed. (For example, refer to Patent Document 1).

  In addition, the present applicant may arrange the first image and the second image on the base material so as to visually recognize the moire pattern in which the first image and the second image interfere with each other depending on the viewing angle. In the latent image print, the first image is compressed in the first direction and with the same compression ratio, and the first element having a concave shape or a convex shape with respect to the base material is formed at a predetermined pitch. The second image is formed by arranging a plurality of first regions formed in the direction of the first region, and the second image is formed in the image region, the glitter region, and the second region formed of the glitter material. The first element forming the first image is formed by arranging a plurality of elements in the same direction as the first direction at a regular pitch different from a predetermined pitch for arranging the first elements. On the other hand, the second element forming the second image is printed in parallel. And it filed an image printed matter (for example, see Patent Document 2).

JP 2004-106311 A JP 2010-179581 A

  Regarding the techniques described in Patent Documents 1 and 2, even when observed from a certain angle, only a uniform pattern (for example, a line pattern) can be visually recognized, but when the observation angle is changed, a latent image pattern appears and can be visually recognized. In particular, the technique described in Patent Document 2 also has a visual effect that allows the developed latent image pattern to be visually recognized with dynamic effects when continuously observed while changing the observation angle from the developed angle. Although it is an anti-counterfeiting technology, only a simple pattern can be seen at an observation angle where the latent image pattern does not appear, so the balance with other areas in the design is poor, so a moire pattern with excellent design is used. This technology was desired.

  In addition, with respect to various moire techniques including the moire techniques described in Patent Documents 1 and 2, a moire pattern appears as a latent image by changing the observation angle or by overlapping a filter or the like on the object. However, there is a problem that it is assumed that a moire pattern appears due to the configuration in which a plurality of lines intersect.

  In addition, this moire pattern is expressed by intersecting line-shaped lines, but the moire pattern to be expressed is determined by the pitch between the lines or the angle of intersection, but is merely a simple pattern, In addition, since it varies depending on the overlapping condition of the filter and the observation angle, it has not been possible to make a design using a moire pattern. Therefore, a technology rich in design using a desired moire pattern has been desired.

  In addition, the above-mentioned geometric pattern is widely used worldwide in the design of securities prints, etc., and at the same time, it has been used for a long time as a pattern of prints with monetary value such as banknotes, stock certificates, bonds, etc. However, it has become an important design as a design that generally gives an impression of luxury. Therefore, in the printed matter such as banknotes, stock certificates, securities such as bonds, various certificates and important documents, the background pattern, the colored pattern, the relief pattern, etc. are indispensable in design. However, recently, there has been a problem that sufficient anti-counterfeiting and falsification preventing effects have not been brought about by the development of highly functional photoengraving apparatuses, color copiers or monochrome copiers.

  Therefore, the present invention is intended to solve the above-described problems, and when using a design that gives an impression of luxury, a moire pattern that is generated by changing the observation angle while utilizing the design is designed in advance. The present invention provides a formed body that assimilates a visible image into a moire pattern that develops to disappear (invisible).

  The present invention is provided with a visible pattern region in at least a part of the substrate, the visible pattern region is a convex line group in which convex convex lines of the same color as the substrate are arranged in a line, Provided with a printed pattern in which colored printed image lines different from the substrate are arranged in a line on the convex image line group, at least one of the convex image line or the printed image line is a wavy line, the other is a wavy line or a straight line, Moreover, when the substrate is tilted, a single moire pattern having a curved line formed by printed and convex lines is formed, and the moire pattern is continuously arranged in a staggered pattern. The printed pattern is divided into a visible pattern and a background pattern based on the difference in shading due to different line area ratios per unit area. This is the same as the moire pattern, characterized in that it becomes assimilated into a collective moire pattern and cannot be recognized. A forming body having a visible image pattern to be.

  Further, in the formed body having a visible image assimilated with the moiré pattern of the present invention, the visible image pattern is separated from the background pattern in the printed pattern by the difference in the line width or the line density of the printed image line. It is formed.

  Further, the present invention is a method for producing a formed body having a visible image pattern assimilated with the above-described moire pattern, wherein a convex line consisting of straight lines or wavy lines for expressing a moire pattern when the substrate is tilted is provided. A step of generating, a wavy line if the convex line is a straight line, a step of generating a printed line consisting of a straight line or a wavy line in the case of a wavy line, and arranging the generated printed lines in a single line A collective moire pattern that corrects the pattern moire pattern that appears when the printed pattern is overlapped with the process of generating the pattern and the projected image line group in which the generated convex lines are arranged in a line. The confirmation process, the mask creation process that creates the mask by extracting the outline of the temporary image pattern that is the basis of the visualized pattern, and the background image print line that is extracted by overlaying the created mask on the background pattern Visualized pattern by processing with different area ratios per area Based on the process of generating, the print pattern creation process of creating the print pattern by synthesizing the image line of the background pattern and the image of the visible pattern, and the convex image line created in the process of generating the convex line It is a method for producing a formed body having a visible image pattern assimilated with a moire pattern having at least a base material creating step for creating a convex line group and a printing step for printing a printed pattern on the base material by a predetermined printing method.

  Further, in the method for producing a formed body having a visible image assimilated with the moire pattern of the present invention, the visible image pattern generating step includes a background pattern image line generating step for replicating the background pattern image line, and a copied background pattern. In the mask, the process of superimposing the image line and the mask on top of each other, the process of erasing only the printed image line arranged outside the mask from the combined pattern, and the line area ratio per unit area are different. And a step of processing the arranged printed image line.

  The formed body having a visible image pattern assimilated with the moiré pattern of the present invention is designed in advance so that the moiré pattern is a pattern having the same shape. Can be designed.

  In addition, since the present invention preliminarily designs the moiré pattern that appears, it is possible to design a visible pattern that can be made invisible according to the observation angle, and the visible pattern can be made invisible by the moiré pattern. .

  In addition, it becomes possible to form moire patterns using traditional geometric patterns such as background patterns, chromatic patterns, and relief patterns. In addition to anti-counterfeiting technology that makes visible patterns invisible, it gives a high-class feeling. A formed body rich in design can be provided.

  In addition, since convex image lines are used to form a moiré pattern, not only authenticity can be determined by visual observation, but also it cannot be reproduced by a copying machine or a printer.

  Furthermore, since the moiré pattern having gradation is developed by increasing the number of print lines, the formed body also takes into account the design.

It is a figure which shows the formation body which has a visible image pattern assimilated with the moire pattern in this invention. It is a figure which shows the outline | summary of a structure of the printing pattern of this invention. It is a figure which shows the aspect of the printing image line which forms a printing pattern. It is a figure which shows the state of the printing image line which forms a visible image pattern. It is a figure which shows another state of the printing image line which forms a visible image pattern. It is a figure which shows the outline | summary of a structure of the convex line group of this invention. It is a figure which shows the lamination | stacking state of a convex image line group and a printing image line. It is a figure which shows the collective moire pattern which appears when a base material is inclined and visually recognized. It is a figure which shows another collective moire pattern which appears when a base material is inclined and visually recognized. It is a figure which shows the state in which a visible image pattern is not assimilated in the formation body produced with the drawing line structure which does not use the drawing line structure of this invention. It is a flowchart figure which shows the preparation methods of the formation body which has a visible image pattern assimilated with the moire pattern in this invention. It is a figure explaining the shape of the printing image line essential in order to design a collective moire pattern. It is a figure which shows the reference point at the time of superimposing background pattern line drawing data and visible image line drawing data.

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

  First, the present invention will be described with reference to the drawings. FIG. 1 shows a formed body (hereinafter referred to as “formed body”) (1) having a visible image pattern assimilated with the moire pattern in the present invention. The formed body (1) in the present embodiment is a gift certificate as an example, and a visible pattern region (3) that is a characteristic point of the present invention is formed on at least a part of the base material (2). A printed pattern (4) having a color different from that of the base material (2) is formed in the visible pattern area (3).

  In the printed pattern (4), as shown in FIG. 2, a plurality of colored printed image lines (5) are regularly arranged. In the present invention, a state in which a plurality of image lines are arranged according to a certain rule is referred to as “line-like”. This “line shape” may be a straight line or a curved line. The printed pattern (4) further comprises a visible pattern (6) and a background pattern (7). In the present embodiment, as shown in FIG. 2, when a later-described convex image line (8) is a straight line, the printed image line (5) is a wavy line, and the visible image pattern (6) is the alphabet “ABC”. It is. The printed image line (5) forming the visible pattern (6) and the background pattern (7) is different from the color of the substrate (2) and has the same color.

  For the background pattern (7), as described above, it is preferable to use a geometric pattern for giving a high-class feeling, but in the formed body (1), it may be only in the visible pattern area (3), A similar geometric pattern is formed to the outside of the visible pattern area (3), and in particular, it may be formed over the entire surface of the substrate (2).

  Furthermore, a convex line group (9) is formed in the visible pattern area (3) in which convex lines (8) that are raised relative to the base material (2) are arranged (arranged) in a line. ing. By forming the convex line group (9), it is possible to form a moire pattern that appears when the observation angle described later is changed. In order to make duplication or counterfeiting more difficult, the projected image line (8) is made into a wavy line, the printed image line (5) is made into a straight line, and the visible image pattern (6) and A background pattern (7) may be formed.

Each pattern will be described in detail. First, the visible pattern (6) and the background pattern (7) will be described. As shown in FIG. 2, at least in the visible pattern area (3), the colored printed image lines (5) are arranged in a single line in the first direction (S1). To view the moire pattern is when observed from the oblique, Totsuga lines forming a Totsugasen gun (9) (8) and the print image line (5) for may be each other interference, Totsugasen ( The shapes of 8) and the printed image line (5) are preferably formed by solid lines as shown in FIG. However, the present invention is not limited to this, and can be formed in various shapes as shown in FIG.

  For example, FIGS. 3A to 3C are image lines, in particular, FIG. 3A is a solid straight line, FIG. 3B is a solid wavy line, and FIG. 3C is a broken line. . 3D is a point group that is an aggregate of a plurality of points, FIG. 3E is a pixel group that is an aggregate of a plurality of pixels, and FIG. It is a character group that is a collection of various characters. However, as described above, the print image line (5) basically has a role of forming a moire pattern due to interference with the convex image line group (9), and therefore needs to be an image line. Therefore, in the shapes shown in FIGS. 3C to 3G, it is necessary to shorten the space between adjacent lines, points, characters, or the like. Since it is a distance that can be visually recognized as one image line with the naked eye, the distance is set to a range of 50 to 500 μm, which is generally referred to as a micro character or a micro character.

  There are two methods for expressing the visible image pattern (6), both of which are methods for varying the image area ratio. In the present invention, the line area ratio is the ratio of the line to the unit area (10). For example, as shown in FIG. 4B, the square area surrounded by the dotted line in the background pattern (7) and the square area surrounded by the dotted line in the visible pattern (6) have the same area. The region having the same area is referred to as “unit area” in the present invention. The image area ratio of the visible pattern (6) and the background pattern (7) is made different per unit area.

  One of the methods is a method in which the image line width of the print image line (5) forming the visible image pattern (6) is made different from the print image line (5) forming the background pattern (7). The second is that the image line width of the print image line (5) composing the background pattern (7) and the print image line (5) composing the image pattern (6) is the same. This is a method of forming a coarse / dense portion in a part of the print image line (5) by varying the pitch of the print image line (5) to be configured.

  First, a method for changing the line width of the first print image line (5) will be described with reference to FIG. 4A is a plan view showing the printed pattern (4), FIG. 4B is a partially enlarged view, and FIG. 4C is a partially enlarged view of FIG. 4B. is there. In FIG. 4C, the image line width (W1) of the print image line (5) constituting the visible image pattern (6) is the image line width (5) of the print image line (5) forming the background pattern (7). W2) It is thicker.

  Since the image line width (W1) of the print image line (5) forming the image pattern (6) is thicker, the image pattern (6) has a larger image area than the background pattern (7) per unit area. The area ratio is high. As described above, the image pattern (6) in the region with a high image area ratio has a higher density than the background pattern (7) in the region with a low image area ratio. expressing.

  In FIG. 4, the image line width (W1) of the visualized pattern (6) is described as being thicker than the image line width (W2) of the background pattern (7). The image line width (W1) of the print image line (5) composing the image pattern (6) is made narrower than the image line width (W2) of the print image line (5) composing the background pattern (7). A pattern (6) may be produced, and a thick image line and a thin image line may be mixed. In any case, it is sufficient that the image area ratio is different between the visualized pattern (6) and the background pattern (7) per unit area.

  Next, FIG. 5 is used for a method of forming a dense portion in a part of the printed image line (5) constituting the second visible image pattern (6) and varying the image area ratio per unit area. I will explain.

  FIG. 5A shows an example in which a visible pattern (6) having a uniform geometric pattern is arranged on the printed pattern (4). FIG. 5B is an enlarged view of a part thereof, and a visible image pattern (6) is formed on a part of the print image line (5) by the density of the image line. In FIG. 5 (a) and FIG. 5 (b), which is a partially enlarged view thereof, the printed image line (5) is formed with a different density (P) with respect to the first direction to form a dense image. Although the pattern (6) is formed, the present invention is not limited to this, and as shown in FIG. 5 (c), the pitch (P) is gradually changed in the second direction orthogonal to the first direction. The visible image pattern (6) is formed by forming a density difference due to the density of the image line.

  As described above, the printed pattern (4) according to the present invention is classified into the visible pattern (6) and the background pattern (7) by the density difference due to the difference in the image area ratio in the unit area (10). As long as the line area ratio can be varied within the unit area (10), the difference between the line width (W) and the pitch (P) is not limited to the above.

  Next, the convex line group (9) formed on the substrate (2) will be described with reference to FIG. FIG. 6A is a plan view schematically showing the convex line group (9). This convex image line group (9) is formed at least in the visible pattern area (3), and is arranged in a single line in the same first direction (S1) as the printed image line (5). In addition, as a role of this convex image line, when the printed pattern (4) is observed in perspective, a part of the printed image line (5) printed on the concave portion of the convex image line (8) and the slope of the convex portion. The moiré pattern (11) is expressed by concealing the protrusions. Accordingly, the convex line (8) needs to be formed in the same color as the base material (2) so as not to affect the visibility of the printed pattern (4) and the moire pattern (11). Note that at least the visible pattern region (3) may be solid-printed with ink of a color different from that of the base material (2), and the convex line group (9) may be formed in the region. Since the base material (2) itself may be the base material (2) of that color in the first place, in the present invention, even when the surface is imparted with solid printing to the base material (2), It will be handled as the color of the substrate (2). Since the convex image line group (9) has a role of concealing a part of the print image line (5) of the print pattern (4) when the base material (2) is obliquely viewed, Any color different from the line (5) may be used.

  The shape of the convex image line (8) will be described with reference to FIG. 6 (b) which is a cross-sectional view taken along the line A-A 'of FIG. 6 (a). As described above, the convex image line (8) is required to have a function of hiding a part of the printed image line (8) when the printed pattern (4) is observed from the perspective direction (E1). The height (H) of the part is important. Therefore, it is necessary to form the height (H) of the convex portion in the range of 30 to 60 μm.

  Next, the pitch (P3) of the convex image line (8) is determined by the image line width (W1) and the pitch (P1) of the print image line (5). If the pitch (P1) of the print image line (5) is narrow and the image line width (W1) is thick, the convex image line (8) is concealed and moiré having gradation is not expressed.

  On the other hand, in providing a design such as a geometric pattern that gives an impression of luxury, which is the subject of the present invention, it is unsuitable that the pitch (P1) of the printed image line (8) is too wide. Further, in order to hide a part of the print image line (5), it is necessary to increase the pitch (P3) of the convex image line (8) and the image line width (W3) of the convex image line (8).

  FIG. 7A is a schematic diagram in which a plurality of print image lines (5) constituting the print pattern (4) are formed on the convex image line group (9), and FIG. It is the figure which expanded a part of cross section. As shown in FIG. 7B, in order to conceal the printed image line (5) printed on the side surface (8 ′) of the convex portion, the top of the convex image line (8), and the concave portion, If the angle observed in E1) is not extremely shallow (the angle between the base material (2) and the perspective view (E1) is small), the moire pattern (11) will not occur. Therefore, as a result of the experiment, the appropriate range of the pitch (P3) of the convex image line (8) was 400 to 1000 μm.

  Next, the line width (W3) of the convex line (8) is determined by the pitch of the convex line (8) described above. When the image line width (W3) of the convex image line (8) is narrow, the area on which the printed image line (5) is printed on the convex portion is small, and therefore when viewed from the perspective (E1), the moire pattern (11 ) Decreases in visibility. On the other hand, when the image line width (W3) of the convex image line (8) is widened, the concave portion is narrowed, so that the area of the print image line (5) to be concealed becomes small, and the visibility of the moire pattern is lowered. Therefore, as a result of the experiment, an appropriate range of the image line width (W3) of the convex image line (8) was 200 to 700 μm.

  The print image line (5) may have a different color from the base material (2), and the print pattern (4) composed of the plurality of print image lines (5) may be a single color or a plurality of different color print images. Line (5) may be arranged. In the case of a plurality of colors, in addition to alternately arranging “red, blue, red, blue”, an arrangement such as “red, red, blue, red, red, blue” may be used.

  As described above, the pitch (P1) and the line width (W1, W2) of the print image line (5) are the pitch (P3) of the convex image line (8) and the image line width (W3) of the convex image line (8). ) To select an appropriate range. For example, when the pitch (P3) of the convex image line (8) is 500 μm and the image line width (W3) of the convex image line (8) is 300 μm, the print image line (5) forming the background pattern (7) The image line width (W2) was set to 80 to 100 μm in consideration of the fact that it depends on the image color but is easy to visually recognize and cannot be reproduced by a simple copying machine or the like. The image line width (W1) of the printed image line (5) forming the visible image pattern (6) is a minimum width from which the visible image pattern (6) can be easily visually recognized with respect to the background pattern (7). It was. In the case where the visualized pattern (6) is expressed with a lighter density than the background pattern (7), the image line widths (W1, W) of the printed image lines (5) of the visualized pattern (6) and the background pattern (7) are expressed. W2) is set in reverse, the image line width (W1) of the print image line (5) of the visible image pattern (6) is 80 to 100 μm, and the image line width of the print image line (5) of the background pattern (7) ( W2) is set to 120 to 150 μm.

  In this case, the pitch (P1) is equal to the pitch (P3) of the convex line (8) in order to develop a uniform moire pattern (11) when the printed pattern (4) is observed from the perspective (E1). It was set to 250 μm which is 1/2. The appropriate range of the pitch (P1) has a lower limit of 240 μm and an upper limit of 300 μm in order to express a moire pattern with good contrast and good visibility. If it is 240 μm or less, the printed image line (5) constituting the visible image pattern (6) becomes close, and the area where the base material (2) is exposed decreases, so that the color of the base material (2) Is not reflected, so a moire pattern with gradation is not obtained.

  As for the upper limit of the appropriate range of the pitch (P1), if it exceeds 300 μm, the interference with the convex image line is lowered, the contrast is lowered, and the moire pattern is inferior in visibility. In addition, when the pitch (P1) of the print image line (5) is set to 500 μm, which is the same as the pitch (P3) of the convex image line (8), the moiré that appears when the pitch (P1) of the print image line (5) is 250 μm. Although it has the same shape as the pattern (11), the contrast is halved because the pitch (P1) of the printed image line (5) is wide.

  In order to form the moire pattern (11) of the feature point in the present invention as a desired pattern, at least one of the print image line (5) and the convex image line (8) needs to be a wavy line. As will be described later, in the moire pattern (11), a single moire pattern (12) (hereinafter referred to as a “moire pattern”) is regularly formed by collecting a plurality of single moire patterns formed by print image lines and convex image lines. In order to form the moire pattern (12), at least one of them needs to be a wavy line. In the present embodiment, the printed image line (5) is a wavy line, but conversely the convex image line (8) may be a wavy line, and both image lines have different pitches (P1, P2, and P3) and amplitudes. It may be a wavy line. A plurality of “single moiré” (15) formed by the print image line (5) and the convex image line (8) is collected to form one moiré pattern (12) having a curve, and the moiré pattern. The moire pattern formed by continuously arranging (12) in a staggered pattern is particularly referred to as a collective moire pattern (11). Therefore, although the moire pattern as a general theory is described as “moire pattern” as it is, the moire pattern formed by arranging a plurality of moire patterns (12) of the present invention is particularly “aggregate moire pattern” (11). Is described. Details will be described later.

  The “staggered” in the present invention refers to a state in which a plurality of moire patterns (12) are regularly arranged in the vertical and horizontal directions. Also, the fact that one “moire pattern (12)” has a curve means that the moire pattern (12) has a curve as shown in FIGS. 8 (c), (d) and FIG. However, in the moire pattern (11) as shown in FIG. 10C described later, the moire pattern (12) is formed only by a straight line and does not have a curve. Such a moire pattern (11) cannot assimilate the visualized pattern (6).

  FIG. 7 shows a state in which the print pattern (4) composed of the print image lines (5) described above and the convex image line group (9) composed of the convex image lines (8) are superimposed. As shown in FIG. 7, the print pattern (4) is arranged so as to overlap the convex image line group (9). At this time, since the print image line (5) is a wavy line, the print image line (5) overlaps the convex image line (8).

  The angle of the printed image line (5) with respect to the projected image line (8) is set as an initial condition when designing a moire pattern (12) to be described later, and the projected image line (8) and the printed image line. (5) may be parallel to the second direction (S2) orthogonal to the first direction (S1), or the print image line (5) may be inclined with respect to the convex image line (8). Good.

  When the observation angle of the formed body (1) formed by overlapping the convex line group (9) and the printed pattern (4) shown in FIG. 7 is changed, the collective moiré pattern (11 shown in FIG. 8B) is changed. ) Is visible. In order to make this collective moire pattern (11) easy to see, FIG. As shown in FIG. 8C, the collective moire pattern (11) of the present invention is formed by arranging a plurality of moire patterns (12) regularly. The moire pattern (12) is, for example, a sawtooth pattern as shown in the partially enlarged view of FIG. 8D, and the print image line (5) and the convex image line are included in one pattern. A plurality of single moire patterns (15) formed by overlapping (8) are arranged to form one moire pattern (12) having a curve.

  The moire pattern (12) is not related to the sawtooth pattern shown in FIG. 8, but a plurality of single moire patterns (15) are arranged and a plurality of moire patterns (12) having a curve are arranged in a staggered pattern. It may be sufficient, and a pattern as shown in FIG.9 (b) may be sufficient. FIG. 9A shows a printed pattern (4) that is the basis of the collective moire pattern (11) of FIG. 9B. As for the collective moire pattern (11) shown in FIG. 9B, the moire patterns (12) are arranged in a staggered pattern. By developing the collective moire pattern (11), the visible image pattern (6) formed on the formed body (1) cannot be visually recognized.

  Such a collective moiré pattern (11) is not a shape created by chance, but appears when the print image line (5) constituting the print pattern (4) is observed in advance from the perspective of the visible image pattern (6). It is designed to be assimilated and disappear (invisible) to the collective moire pattern (11). Therefore, a plurality of moire patterns (12) appearing in the collective moire pattern (11) are regularly arranged.

  Here, the case of the moire pattern (11) not having the moire pattern (12) in the present invention will be described with reference to FIG. FIG. 10A shows a printed pattern (4), and FIG. 10B shows a convex image line group (9). FIG. 10C is a plan view showing a state in which the printed moire pattern (11) is developed by superimposing the printed pattern (4) in FIG. 10 (a) and the convex line group (9) in FIG. 10 (b). It is the figure shown in. FIG. 10C shows a monotonous vertical stripe in which a plurality of moiré patterns (12), which is a feature of the present invention, are not arranged in a staggered manner, but a plurality of single moiré patterns (11) are arranged as described above. A plurality of patterns are arranged. Thus, with the monotone moire pattern, it is impossible to hide the visible image pattern (6).

  The present invention is characterized in that the collective moire pattern (11) capable of hiding the visible image pattern (6) is designed in advance, and the print image line (5) for forming the collective moire pattern (11) Shape is important. Next, how to design the aggregate moire pattern (11), the shape of the printed image line (5) for that purpose, and the manufacturing method of the formed body will be described with reference to the flowchart of FIG. I will explain.

  The formed body includes a step (Step 1) of generating a convex line (8) for expressing the collective moire pattern (11) when the base material (2) is tilted, and a printed image constituting the background pattern (7). A step (Step 2) for generating a line (5), a step (Step 3) for generating a background pattern (7) from the generated printed image line (5), and a generated projected image line (8) and a printed image line (5). Collective moire pattern (11) that appears when superimposed is corrected so that it becomes a desired collective moire pattern (11), a collective moire pattern confirmation step (Step 4), and a pre-process for creating a visible image pattern (6) The mask creation process (Step 5), the printed pattern (5) of the background pattern (7) extracted by overlaying the created mask on the image pattern of the background pattern (7) is processed to create a visible pattern (6) Step of generating (Step 6), image line and visual pattern of background pattern (7) 6) A print pattern creation step (Step 7) for creating a print pattern (4) by synthesizing the image lines, and a convex image line group (9) based on the convex image lines created in the convex image line generation step (Step 1). It is produced by the base material preparation process (Step8) which produces the base material (2) which has, and the printing process (Step9) which prints the printing pattern (4) on a base material (2). When the printing pattern (4) is printed on the substrate (2) by a predetermined printing method, when this printing method uses a printing plate surface such as an offset printing method, the printing process (Step 9) is performed. A printing plate preparation process for printing;

  Here, FIG. 12 is a diagram for explaining the print image line (5). In order to generate the collective moire pattern (11), at least one of the print image line (5) and the convex image line (8) must be a wavy line. Therefore, if the printed image line (5) is a wavy line, the image line width (W) and pitch (P) are set based on the pitch (P3) of the protruding image lines (8) constituting the protruding image line group (9). P1), amplitude (h), and period (T) are designed to generate a wavy baseline.

  If the image line width (W), the pitch (P1), the amplitude (h), and the period (T) are determined as described above using the printed image line (5) as a wavy line, the collective moire pattern (11) is formed. Therefore, a convex image line (8) of another image line necessary for this is generated. In this case, since the printed image line (5) is already a wavy line, the convex image line (8) may be a straight line or a wavy line. However, in the case of a wavy line, it is necessary that at least one of the amplitude (h) and the period (T) is different from the already created printed image line (5). With the same wavy line shape, all the lines are simply superimposed, and the collective moire pattern (11) due to interference cannot be formed.

  Hereinafter, each process will be described in detail, but for the sake of brevity, the convex image line (8) is a straight line and the print image line (5) is a wavy line that represents a sawtooth pattern. In addition, as an example of an efficient method for producing the formed body (1), it is preferable to create image data using an image processing apparatus. Therefore, the following is a method of creating using an image processing apparatus. I will explain.

  First, in the convex image line generation step (Step 1), convex image line data (8 ') that is the basis of the convex image line (8) is generated. In generating the convex image line data (8 ′), as described above, the pitch (P3) (for example, 500 μm) of the convex image line (8) and the line width (W3) of the convex image line (8) (for example, , 300 μm) as a generation condition, a plurality of convex image lines (8) are arranged in the first direction (S1) in a range corresponding to the area of the printed pattern (4) to generate the convex image line group (9).

  Next, as a print image line generation step (Step 2), print image data (5 ') to be the print image line (5) is generated. In generating the print image data (5 ′), the pitch (P1) of the print image line (5) is equal to the pitch (P3) of the convex image line (8) (for example, the convex image line (8). ) Pitch (P3) is 500 μm, the pitch (P1) of the printed image line (5) is 250 μm), the image line width (W1) forming the background pattern (for example, 100 μm) and the angle with respect to the convex image line. Set.

  Next, as the background pattern generation step (Step 3), after setting the amplitude (h) and period (T) of the basic print image line (5), the first of the basic print image line (5) is set. With respect to the direction (S1), the vertex of the amplitude (h) of the next print image line (5) arranged adjacent to the direction (S1) is left or right relative to the vertex of the amplitude (h) of the basic print image line (5). A shift amount (hereinafter referred to as “phase (p)”) for shifting by several tens of μm in this direction is set. In this embodiment, it is shifted to the right.

  A third print image line arranged in the first direction (S1) after the second print image line (5) arranged adjacent to the basic print image line (5) is set. A phase (p) for shifting the vertex of the amplitude (h) of (5) by several tens of μm in the right direction with respect to the vertex of the amplitude (h) of the second printed image line (5) is set.

  This operation is repeated n times to generate the basic print image line (5) to the nth print image line (5) arranged in the first direction (S1) sequentially. By slightly differing the phase (p) of each printed image line (5), the collective moire pattern (11) that appears when observed in perspective is formed as a sawtooth moire pattern (12).

  After shifting the phase (p) to the right from the basic print image line (5), next, printing is performed by shifting the phase (p) n times leftward from the (n + 1) th print image line (5). The stroke (5) is generated. The phase (p) follows the same rule as above. By repeating this operation, background pattern image line data (7 ') of the background pattern (7) is generated.

  Next, as the collective moire pattern confirmation step (Step 4), the created convex image data (8 ′), print image data (5 ′) and background pattern image data (7 ′) are used to temporarily A collective moire pattern (11) is confirmed. As described above, the collective moire pattern (11) appears when the convex part of the convex image line (8) hides a part of the printed image line (5) when observed in perspective. Accordingly, the confirmation of the collective moiré pattern (11), in particular, the moiré pattern (12) is performed by superimposing the convex line group data (9 ′) on the background pattern line data (7 ′) already generated on the monitor. By concealing a part of the print image line (5) constituting (7), it can be confirmed by simulating the collective moire pattern (11) (including the pattern (12)) observed from the perspective. When the print image line (5) is displayed in black, the project image line (8) is displayed as white or gray.

  When the confirmed collective moiré pattern (11), particularly the moiré pattern (12), does not have the desired pattern and shape, the print image line data (5 ′) generated in the print image line generation step (Step 2) in the previous step. ) Amplitude (h) and period (T) or at least one condition of the phase (p) generated in the background pattern generation step (Step 3) is changed, and the collective moire pattern (11) and moire pattern ( 12) Modify the shape.

  The corrected background pattern image data (7 ') and the convex image data (8') are superimposed again to confirm the shape of the collective moire pattern (11). In the case of the print pattern (4) as described above that expresses a sawtooth pattern, printing is performed on the left and right sides of the amplitude (h) by shifting the vertex of the amplitude (h) as in the background pattern (7) shown in FIG. Shading due to the density of the pitch (P1) of the image line (5) will occur. Although this shading can be made a part of the printed pattern (4), in order to reduce this shading, it is necessary to work to slightly narrow the image line width (W1) of the dense portion. The steps so far are repeated until the desired moire pattern (12) of the collective moire pattern (11) is obtained, and background pattern image data (7 ') is created.

  Next, as a mask creation step (Step 5), first, what kind of visible image pattern (6) is to be determined is determined. At this time, the visualized pattern (6) may be acquired as a pattern created in advance as external data, or may be created again using an image creating apparatus. Contour data obtained by extracting the outline (contour) of the created visible image pattern (6) is created as a mask. The previously generated background pattern image data (7 ') is duplicated to create background pattern image data (7 "). After the mask is overlaid on a predetermined position of the background pattern image data (7 ″), the image data (7 ′) and outline data of the background pattern (7) outside the outline are removed. At this stage, the wavy lines arranged in the outline of the visible image pattern (6) are the wavy lines forming the background pattern (7), the line width (W), the amplitude (h), the period (t), the shift amount ( p) is also the same.

  Next, as a visible image pattern creating step (Step 6), the line width (W1) of the wavy line arranged in the outline of the visible image pattern (6) is changed to a desired thickness. The series of operations from the convex line generation step (Step 1) to the visible pattern generation step (Step 6) described so far are actually automatically generated by inputting set values into the line generation software. .

  Next, as a printed pattern creation step (Step 7), as shown in the schematic diagram of FIG. 13, the reference points (in the already created background pattern image data (7 ′) and the image pattern image data (6 ′)) ( 13) is also combined (superposed) to generate print pattern line data (4 ′) of the print pattern (4). It is necessary to set two reference points (13) at least at the same position for each piece of image data (6 'and 7'). However, it is preferable to set three reference points (13) for proper synthesis.

  Next, although you may implement at any process, the process (Step8) which forms a convex-image line group (9) in a base material (2) is demonstrated. If this convex line group (9) is a paper base material, it can be formed by a known penetration technique, embossing or laser processing. When the convex line group (9) is formed by embossing, the convex shape may collapse with the passage of time after the formation (for example, while it is distributed in the market as valuable printed matter). It is preferably formed by a penetration technique or laser processing. Moreover, if it is a plastic base material, it can also form by laser processing or press processing. In the case of pressing on a plastic substrate such as a card, it can also be formed by printing a printed pattern (4) and then pressing with a press machine that has processed the convex image line group (9).

  Finally, as a printing step (Step 9), after the convex line group (9) is formed on the substrate (2), the printed pattern (4) is formed on the convex line group (9) by a predetermined printing method. . The predetermined printing method may be any known offset printing, flexographic printing, screen printing, or intaglio printing. However, since printing is performed over the convex line group (9), a printing method that affects the convex shape is not preferable. Therefore, offset printing with the lightest printing pressure is preferable. It is also possible to print with an ink jet printer (hereinafter referred to as “IJP”) that does not use a printing plate.

  In the case where the visible pattern (8) is formed by the density of the image line described with reference to FIG. 5, the visible image is added to the background pattern image data (7 ′) forming the background pattern (7). After the masks for forming the pattern (8) are overlapped, the line pitch in the mask is individually narrowed or widened to make the line density different from the background pattern (7). In this case, the moire pattern (12) by the thick and thin lines described above has the same shape in the visible pattern (8) and the background pattern (7). (12) is similar.

  When printing the printed pattern (4) on the convex image line group (9) using the printing plate surface, as a printing plate surface production process, the printed pattern (4) is created based on the created printing pattern image line data (4 ′). The printing plate surface for forming is produced as a step before the printing step (Step 9).

  Hereinafter, according to the embodiment for carrying out the invention, an example of a formed body having a visible image pattern assimilated with a specifically produced moire pattern will be described in detail, but the present invention is limited to this example. Is not to be done.

A first embodiment of the present invention will be described with reference to FIG. A printed pattern (4) shown in FIG. 8A was formed on a part of the substrate (2). As shown in FIG. 8A, the printed pattern (4) is composed of a visualized pattern (8) expressed in Roman letters “ABC” and a surrounding background pattern (7). As the substrate (2), high-quality paper (NPI high-quality paper 81.4 g / m ² manufactured by Nippon Paper Industries Co., Ltd.) was used. On the base material (2), a convex line group (9) was formed with a UV curable ink for screen printing using a screen printer (MF-250 manufactured by RANAS). The convex line (8) constituting the convex line group (9) is a straight line formed with straight lines, the pitch (P3) is 500 μm, the line width (W3) is 300 μm, and the height of the convex line ( h) is 40 μm.

  The printed image line (5) has an amplitude (h) of 450 μm, a period (T) of 500 μm, an image line width (W2) of 100 μm, a pitch (P) of 250 μm, a phase shift of 60 degrees, and every 25 lines. Background pattern stroke data (7 ') was generated under the law of switching between the left and right directions.

  The mathematical formula used for the calculation is as follows.

  Confirmation of the collective moire pattern (11) was performed by superimposing the image data of the above-mentioned convex image line group (9) on the background pattern image data (7 '). As a result, it was confirmed that the desired collective moire pattern (11) and moire pattern (12) shown in FIGS.

  The image pattern (7) is “ABC” and the outline is extracted to create a mask, which is superimposed on the previously copied background pattern image data (7 ″), and then the image data around the mask is removed. did. Furthermore, the image line width (W1) in the mask was changed to 150 μm to create the visible image line data (8 ′).

  Next, the printed pattern image data (4 ') was created by superimposing the visualized pattern image data (8') on the background pattern image data (7 ').

  A printing plate for offsetting was prepared based on the printed pattern image data (4 ').

  A printed pattern (4) was printed on the surface of the convex line group (9) already formed on the substrate using an offset ink (Best Cure Indigo manufactured by T & K TOKA). The printing machine is an offset printing machine (EP-60 manufactured by Shimogaki Iron Works).

  When the formed body (1) produced in Example 1 was observed with the naked eye from the front, the visible pattern “ABC” was visually recognized. Next, when the formed body (1) was observed while being tilted in the first direction (S1), the printed pattern (4) was changed to the aggregate moire pattern (11), and at the same time, the visible image pattern “ABC” was aggregated. It became assimilated to the moire pattern (11) and became invisible.

  As Example 2, an aggregated moire pattern (11) having gradation was formed by using two colors for the printed pattern (4) created in Example 1.

  In the print pattern image data (4 ′), the print image line (5) is used as a reference, the print image line (5) is an odd print image line (5-1), and the print image line is used as the reference. The print image line adjacent to (5-1) is the even print image line (5-2), and the print image line adjacent to the even print image line (5-2) is the odd print image line (5- 1). Therefore, the odd number of printed image lines (5-1) and the even number of printed image lines (5-2) are alternately arranged. In this way, the print image line (5) constituting the print pattern (5) is separated into the odd print image line (5-1) and the even print image line (5-2), and the odd print image line (5-2). Print pattern line data (4 ′) and print pattern line data (4 ″) of (5-1) were created, and two printing plates were produced from the individual print line data.

  Printing was performed with an offset ink (Best Cure Indigo manufactured by T & K TOKA) using the printing plate surface formed from the printed pattern image data (4 '). Thereafter, printing was performed with an offset ink (BO special PANTON green manufactured by T & K TOKA) using a printing plate surface composed of printed pattern image data (4 ″).

  When the formed body (1) produced in Example 2 was observed with the naked eye from the front, the visible pattern “ABC” was visually recognized as a color in which indigo and green were mixed. Next, when the formed body (1) was observed while being tilted in the first direction (S1), the printed pattern (4) changed to an aggregate moire pattern (11) having a blue and green gradation, and at the same time The visible pattern “ABC” became assimilated with the collective moiré pattern (11) and became invisible.

DESCRIPTION OF SYMBOLS 1 Form body which has image pattern assimilated with moire pattern 2 Base material 3 Image pattern area 4 Print pattern 4 'Print pattern image line data 5 Print image line 5-1 Odd print image line 5-2 Even print image Line 5 'Print image data 6 Image pattern 6' Image pattern image data 7 Background pattern 7 ', 7''Background pattern image data 8 Convex image line 8' Convex image line data 9 Convex image line group 9 ' Convex line group data 10, 10 ′ Unit area 11 Moire pattern, collective moire pattern 12 Moire pattern 13 Reference point 15 Single moire pattern S1 First direction S2 Second direction S3 Third direction

Claims (4)

Provide a visible pattern area on at least a part of the substrate,
The visible pattern area is a convex line group in which convex image lines having the same color as the base material are arranged in a line, and a color different from the base material on the convex line group. It has a print pattern in which print lines are arranged in a line,
At least one of the convex image line or the printed image line is a wavy line, the other is a wavy line or a straight line, and the shape of the wavy line is formed by the printed image line and the convex image line when the substrate is inclined. One moire pattern having a curve is formed, and the moire pattern is formed to be a collective moire pattern that is continuously arranged in a staggered pattern,
The printed pattern is divided into a visible pattern and a background pattern based on the difference in shading caused by different line area ratios per unit area,
A formed body having a visible image pattern assimilated with a moire pattern, characterized in that when the base material is tilted and viewed, the visible image pattern becomes assimilated to the aggregate moire pattern and cannot be recognized.   2. The moire pattern according to claim 1, wherein the visible pattern is formed by being separated from the background pattern in the print pattern by a difference in an image line width or an image density of the print image line. A formed body having a visible image pattern that assimilate. A method for producing a formed body having a visible image pattern assimilated with the moire pattern according to claim 1 or 2,
Generating a convex line consisting of a straight line or a wavy line for expressing the moire pattern when the substrate is tilted;
A wavy line when the convex line is a straight line, and a printed line consisting of a straight line or a wavy line when the line is a wavy line; and
Generating the background pattern by arranging the generated print lines in a line; and
A collective moire pattern confirmation step for correcting the collective moire pattern that appears when the printed pattern is overlapped with the printed image line group in which the generated convex image lines are arranged in a line, and a desired pattern; ,
A mask creating step for extracting a contour of a temporary visible image pattern that is the basis of the visible image pattern and preparing it as a mask;
A process of generating a visible image pattern by processing a printed image line of a background pattern extracted by overlapping the created mask on the background pattern with a different image area ratio per unit area; and
A printed pattern creating step of creating the printed pattern by synthesizing the background pattern image line and the visualized pattern image line;
Based on the convex image line created in the convex image line generation step, a base material preparation step for preparing the convex image line group on the base material,
A method for producing a formed body having a visible image pattern assimilated with a moire pattern having at least a printing step of printing the printed pattern on the base material by a predetermined printing method. The visual pattern generation step includes a background pattern line generation step of replicating the background pattern line, and
Superimposing the duplicated background pattern image and the mask; and
Erasing only the printed image line arranged outside the mask from the synthesized pattern;
The image pattern assimilated with the moire pattern according to claim 3, further comprising a step of processing the printed image line arranged in the mask so that the image line area ratios per unit area are different. A method for producing a formed body.

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