JP3909906B2 - Anti-counterfeit printed matter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a printed matter using a technique for preventing forgery by a color copier or the like.
[0002]
[Prior art]
In recent years, digital color copiers have become widespread and their performance has been remarkably improved. For this reason, it has become possible to easily and elaborate counterfeiting of cash vouchers, etc. that required special techniques. In view of this, there has been proposed a printed matter in which various anti-counterfeiting measures have been taken along with improvement in the performance of the color copier.
[0003]
By copying and displaying a pattern that does not exist in the manuscript and clarifying the difference between the manuscript and the manuscript, the manuscript can be easily found. For example, there is an anti-counterfeit printed matter in which a pattern composed of a plurality of concentric circles that do not overlap with each other is printed as a background. When this anti-counterfeit printed material is copied as a document, moire occurs in the portion of the copied material where the pattern is formed. Of course, since the moire is not present in the manuscript, it can be confirmed at a glance that it is a copy.
[0004]
[Problems to be solved by the invention]
The resolution of copying is not only different depending on the type of copying machine, but the same copying machine can adjust the resolution according to the type of document (map, text, photo, etc.). The resolution range is wide, for example, the resolution is increased to obtain a fine copy, and the resolution is decreased to obtain an easy-to-read copy for an original with a rough screen. In the conventional anti-counterfeit printed matter, the range of resolution that can cause moiré in a copy is narrow, so that the above-mentioned various resolutions cannot be copied, and moiré may not occur in the copy.
[0005]
The present invention has been made in view of the above points, and provides an anti-counterfeit printed matter that clearly causes a change in a copied matter and makes a difference from the original clear even if the copy is made at any resolution. For the purpose.
[0006]
[Means for Solving the Problems]
  To achieve the above objective,The present inventionThe anti-counterfeit printed material includes a first region in which a first pattern made of a large number of fine elements is formed, and a second pattern made of a large number of fine elements having a size different from the fine elements of the first pattern. A copy area formed by contacting the first area and the second area, and a second area formed withGraphicArranged without overlapping multiple polygons, circles or ellipses with the same centerFormedMoire patternAt least part ofAnd is givenIn the moiré pattern, the interval between adjacent polygons, circles, or ellipses is gradually expanded or gradually reduced from the center of each figure to the outside, or there is coarseness.Is.
[0007]
  The present inventionThe anti-counterfeit printed matterA substantially rectangular printed body, a first region provided in the printed body and having a first pattern formed of a plurality of fine elements, and a fine element of the first pattern provided in the printed body. A second area formed with a second pattern made of a large number of fine elements of different sizes, and a copy image formed by contacting the first area and the second area, And a moire pattern in which a plurality of ellipses having the same center are arranged without overlapping, and the ratio of the short diameter to the long diameter of the plurality of ellipses is substantially the same as the ratio of the short side to the long side of the printed body. What isIt is.
[0008]
  The present inventionThe anti-counterfeit printed matterThe above configurationIn anti-counterfeit printed matter,The fine elements of the first pattern and the fine elements of the second pattern are either dots and dots, dots and lines, or lines and lines.
[0009]
  The present inventionThe anti-counterfeit printed matterThe above configurationIn the anti-counterfeit printed matter, in the moire pattern, the line width of a polygon, a circle, or an ellipse is gradually enlarged or reduced in proportion to the distance from the center.
[0010]
  The present inventionThe anti-counterfeit printed matterThe above configurationIn the forgery-preventing printed matter, in the copy image, the area occupied by the fine elements of the first pattern and the fine elements of the second pattern changes in an inclined manner or stepwise.
[0011]
  The present inventionThe anti-counterfeit printed matterThe above configurationIn the anti-counterfeit printed matter, the copy imageIn any part of, Fine elements of the first pattern per unit areaThe area occupied byArea occupied by fine elements of second patternTogahoThe same.
[0012]
  The present inventionThe anti-counterfeit printed matterThe above configurationIn the anti-counterfeit printed material, the color distributed outside the color reproduction area of the toner on the chromaticity coordinates in at least one of the copy image, the moire pattern, and the pattern other than the copy image and the moire pattern. Is used.
[0013]
[Embodiments of the Invention]
Hereinafter, specific embodiments of a forgery-preventing printed material according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic view of a forgery-preventing printed matter according to the first embodiment of the present invention. The commuter pass 1 is provided with a circular portion 1a on which a copy image, which will be described later, is printed at the center thereof, and a moire pattern, which will be described later, is printed on the entire surface 1b other than the circular portion 1a. With these copy images and moire patterns in the background, characters 1c such as a use section, name, and expiration date are printed thereon.
[0014]
In this embodiment, the anti-counterfeit printed matter according to the present invention is applied to a commuter pass. However, it may be used for a printed matter that causes inconvenience when forged such as other securities. In addition, although not shown or described below, these commuter passes and securities often have a background pattern such as a company logo or mark, and the copy image avoids the background pattern. It can also be used.
[0015]
The copy image of this embodiment will be described. The copy image is composed of two halftone dots, a first halftone dot and a second halftone dot. FIG. 2 is a diagram schematically showing only the formation part (circular part 1a in FIG. 1) of the copy image 2 in the commuter pass 1 of the present embodiment. A first halftone dot 2a is provided in the portion 4a shaped like the character “NO”, and a second halftone dot 2b is provided in the other portion 4b. Here, the character “NO” is used as the portion where the first halftone dot 2a is provided, but the shape of other warning phrases, marks, and the like is not particularly limited, and the copy image of this embodiment will be described later. It is only necessary to combine the two halftone dots and visually distinguish the area where each halftone dot is formed.
[0016]
A halftone dot is a pattern in which fine elements composed of a large number of points are regularly arranged. A point forming the first halftone dot 2a is located at the center of each frame in a number of frames formed by intersecting two line groups having a line density of 150 to 200 lines / inch having different directions. They are lined up like The size of these points occupies a predetermined area ratio (about 10 to 30%) in each frame.
[0017]
Further, the point forming the second halftone dot 2b is the center of each frame in a number of frames formed by intersecting two line groups having a line density of 50 to 80 lines / inch having different directions. It is lined up to be located in. The size of these points occupies almost the same area ratio as that of the first embodiment in each frame.
[0018]
FIG. 10 is a diagram obtained by enlarging a part of the first halftone dot 2a and the second halftone dot 2b at the same magnification. (A) shows the first halftone dot 2a, and (B) shows the second halftone dot 2b, both having the same area (unit area). In the present embodiment, the total area of the points forming the first halftone dot 2a shown in (a) and the area of each point forming the second halftone dot 2b shown in (b) It is almost equal to the total.
[0019]
In this way, the first halftone dot 2a and the second halftone dot 2b are different in size, but each point is fine and the area occupied by the point per unit area is almost the same. These can hardly be distinguished visually, and the character “NO” cannot be confirmed.
[0020]
However, depending on the color used for each halftone dot, the halftone dot having the larger dot (in this embodiment, the second halftone dot 2b) may be easily noticeable. In this case, for example, assuming that the first halftone dot 2a is based on a line group having a line density of 175 lines / inch and the second halftone dot 2b is based on a line group having a line density of 65 lines / inch, each frame It is preferable that the area ratio of the dots in the inside is slightly different, such as 30% for the first halftone dot 2a and 25% for the second halftone dot 2b. In FIG. 2, the difference in size between the first halftone dot 2a and the second halftone dot 2b is markedly shown so that the first halftone dot 2a and the second halftone dot 2b can be distinguished. Although enclosed, these points are inherently very fine and no dotted lines are provided.
[0021]
When the copy image 2 is copied, when the resolution of copying is relatively high, the copying machine can recognize the difference between the first halftone dot 2a and the second halftone dot 2b, and the first halftone dot 2a and the second halftone dot 2b. It tries to appear on the copy in a state different from the halftone dot 2b. FIG. 3 is a diagram schematically showing the copied copy image 2 of FIG. The second halftone dot 2b is reproducibly reproduced and becomes a dark color as a whole, but the first halftone dot 2a is reproduced with finer and thinner points than the second halftone dot 2b. Accordingly, since the character “NO” is highlighted in white in the copy image 2 forming portion of the copy, it is clearly different from the original.
[0022]
The two types of halftone dots constituting the copy image 2 of the present embodiment are both formed by circular points, but it is not necessary to be limited to this. The two halftone dots used here can be distinguished from each other in the original, and the difference can be clearly shown in the copy.
[0023]
For example, the dots forming the halftone dots may be in a complicated shape composed of a plurality of unit fines. In that case, the point forming one halftone dot is a shape formed by relatively contacting unit fines, and the point forming the other halftone dot is a shape formed by relatively separating unit fines from each other. To do. In both halftone dots, the same number of unit fines are used to form one point, and the area ratio of the points per unit area is made approximately equal, so that the original cannot be distinguished, but copying Things are reproduced in different states.
[0024]
In the present embodiment, the copy image 2 is composed of two halftone dots. However, the copy image 2 may be composed of halftone dots and lines, or lines. In that case, by making points and lines per unit area or the area ratio occupied by the lines almost equal, the two patterns cannot be distinguished in the original state, but reproduced in a different state on the copy. Can be made.
[0025]
Next, the moire pattern 3 will be described. FIG. 4 is a diagram schematically showing only the moire pattern 3 in the commuter pass 1 of the present embodiment. The moire pattern 3 is composed of a plurality of concentric circles, and these circles do not overlap each other and are arranged at a constant interval from adjacent circles.
[0026]
When the moire pattern 3 is copied, in the case of a copy having a relatively low resolution, a moire appears in the portion of the moire pattern 3 of the copy regardless of the scanning direction of the copy. At this time, when the line density in the radial direction of the concentric circles is about 30 to 130 lines / inch, moire is likely to occur. Particularly, when the line density is set to 40 to 85 lines / inch, a remarkable effect is exerted on a copying machine having a resolution of 400 dpi. Demonstrate. In the present embodiment, the moire pattern 3 is configured by concentric circles. However, the present invention is not limited to this, and moire can be generated in a copy even with a plurality of polygons and ellipses arranged so as not to overlap each other with the same center. .
[0027]
In this embodiment, a color distributed outside the toner color reproduction region on the chromaticity coordinates is used for at least a part of the commuter pass 1, for example, a copy image 2 or a moire pattern 3 or a pattern provided elsewhere. The color distributed outside the color reproduction area of the toner on the chromaticity coordinates will be described. FIG. 5 shows chromaticity coordinates. Both the x-axis and the y-axis represent the hue, and the point on the coordinate indicates the color represented by the chromaticity coordinate (x, y) at that position. A bold-lined frame A indicates a region that can be recognized by humans.
[0028]
There are limits to the colors that can be reproduced with the three primary color toners of color copiers and the colors that can be reproduced with printing ink. The number of colors that can be reproduced with toner is less than the number of colors that can be reproduced with printing ink, and when shown as areas on the chromaticity coordinates, the color reproduction area of toner is more than the color reproduction area of printing ink. It will be narrow. Accordingly, there are colors that are included in the color reproduction area of the printing ink but are not included in the color reproduction area of the toner.
[0029]
For example, in FIG. 5, B is a light green color reproducible with printing ink, and C is a light green color distribution reproducible with toner. As shown in the figure, the color B reproducible with printing ink is different from the color distribution C reproducible with toner. That is, since the color B that can be reproduced with printing ink is a color distributed outside the color reproduction region of the toner, it cannot be reproduced with toner. Therefore, when a printed matter using the color B reproducible with the printing ink is copied as a manuscript, the portion is reproduced as light blue completely different from the light green color, and there is a clear difference from the manuscript. .
[0030]
As described above, in the anti-counterfeit printed material of the present embodiment, in the case of a copy having a relatively high resolution, the character “NO” appears in the copy image 2 forming portion of the copy, and in the case of a copy having a relatively low resolution, the copy is made. Moire occurs in the portion of the moire pattern 3 in the object. Therefore, the difference between the manuscript and the copied material becomes clear, and the copied material can be found instantly. In addition, since a color outside the toner color reproduction region on the chromaticity coordinates is used for the original, a color that does not exist in the original appears on the copy. Even if it is copied at a high resolution, it is possible to obtain a copy that can be judged to be different from the original at a glance.
[0031]
Next, the forgery prevention printed matter of 2nd Embodiment which concerns on this invention is demonstrated. The anti-counterfeit printed matter of the present embodiment has substantially the same configuration as the anti-counterfeit printed matter of the first embodiment, and the commuter pass is provided with a circular portion on which a copy image (to be described later) is printed at the center as a background portion. A moire pattern, which will be described later, is printed on the entire surface other than the circular portion (see FIG. 1).
[0032]
The copy image of this embodiment will be described. The copy image is composed of two lines, a first line and a second line. FIG. 6 is a diagram schematically showing only a portion where the copy image 12 is formed in the commuter pass 11 of the present embodiment. The first line 12a having a line density of 175 lines / inch is provided in the part 14a shaped with the character “NO”, and the second line 12b having a line density of 65 lines / inch is provided in the other part 14b. Is provided.
[0033]
The first line 12a and the second line 12b have different line widths and line intervals, but each line is very thin, and the area occupied by a unit area per unit area is as in the first embodiment. It is almost the same. Therefore, these cannot be distinguished visually, and the character “NO” cannot be confirmed. In FIG. 6, the difference in the thickness of each line is shown so that the first line 12a and the second line 12b can be distinguished, and the formation portion 14a of the first line 12a is indicated by a dotted line. Although enclosed, these lines are inherently very thin and no dotted lines are provided.
[0034]
When the copy image 2 is copied, if the copy resolution is relatively high, the copying machine can recognize the difference between the first line 12a and the second line 12b, and the first line 12a and the second line 12b. It tries to appear on the copy in a state different from the line 12b. In the second line 12b, the line is clearly reproduced and becomes a dark color as a whole. However, the first line 12a is reproduced as a thinner and thinner line than the second line 12b. Accordingly, since the character “NO” is highlighted in white in the copy image 2 formation portion in the copy (see FIG. 3), it is clearly different from the original.
[0035]
Further, in the present embodiment, the copy image 12 is constituted by two parallel lines. However, a copy image may be constituted by halftone dots or halftone dots and parallel lines. In that case, by making the area ratio of the points per unit area or the points and lines to be almost equal, the two patterns cannot be distinguished in the original state, but are reproduced in different states on the copy. be able to.
[0036]
Next, the moire pattern 13 will be described. FIG. 7 is a diagram schematically showing only the moire pattern 13 in the commuter pass 11 of the present embodiment. The moiré pattern 13 is composed of a plurality of ellipses having the same center, and they are arranged without overlapping each other. The ellipse of the moire pattern 13 is obtained by compressing a plurality of concentric circles in the vertical direction according to the ratio of the vertical length to the horizontal length of the commuter pass 11. There are almost the same number of lines.
[0037]
In addition, as the moire pattern 13 moves away from the center in the radial direction, the interval between adjacent ellipses becomes inversely narrow. The linear density is, for example, about 40 lines / inch in the longitudinal direction near the center, and continuously increases toward the outside, and is about 85 lines / inch on the outermost side. Here, the interval between the ellipses is continuously changed, but this may be divided into a plurality of groups and may be changed step by step for each group.
[0038]
When the moire pattern 13 is copied, moire appears in the portion of the moire pattern 13 of the copy regardless of the scanning direction of the copying machine. Further, in the present embodiment, since the interval between the ellipses is changed, the density of the ellipses is uneven in the radial direction of the moire pattern 13, and the resolution is relatively low in the portion where the intervals between the ellipses are rough. Moire tends to occur, and moire tends to occur in dense areas when the resolution is relatively high.
[0039]
In addition, in the case of a moire pattern made of a circle, when it is formed on the entire surface of a horizontally-long rectangular object such as the commuter pass 11, the vertical direction is narrower than the left-right direction and the moire is difficult to appear. Since the ratio of the vertical and horizontal lengths of the commuter pass 11 is the same as the vertical and horizontal lengths of the commuter pass 11, moire is generated in the vertical direction of the center as in the horizontal direction. It can be easily distinguished. Furthermore, in the case of an ellipse, the line width and interval slightly change depending on the ratio of the vertical and horizontal lengths, so that there are various line widths and intervals in one pattern rather than a moire pattern made of circles. Can do. Therefore, it is possible to generate moiré in a portion of the copy in a wider range of copy resolution.
[0040]
In the present embodiment, the moire pattern 13 is composed of an ellipse. However, the present invention is not limited to this, and moire can be generated even with a plurality of polygons or circles having the same center. Moreover, although the space | interval of an ellipse was expanded gradually, the reduced moire pattern may be sufficient. Furthermore, as in the moire pattern 13a shown in FIG. 12, a spiral (spiral) pattern consisting of a single line, or in the semicircles each other, like the moire pattern 13b shown in FIG. It may have a shape similar to an ellipse connected by a straight line.
[0041]
As described above, in the anti-counterfeit printed material of the present embodiment, in the case of copying with a relatively high resolution, the character “NO” appears in the copy image 2 forming portion of the copied material, and the interval between the ellipses of the moire pattern 13 is close. Moire occurs in the part. In the case of copying with a relatively low resolution, moire occurs in a portion where the interval between ellipses of the moire pattern 3 in the copy is coarse. Therefore, the difference between the manuscript and the copy becomes clear, and the copy can be found instantly.
[0042]
Further, in addition to the copy image 12 and the moire pattern 13 described above, as in the first embodiment, at least a part of the commuter pass 11 uses a color distributed outside the toner color reproduction area on the chromaticity coordinates. Colors that are not found in the manuscript appear in the copy. Therefore, the anti-counterfeit printed matter of the present embodiment can obtain a copy that can be judged to be different from the original at a glance at any resolution.
[0043]
Next, the anti-counterfeit printed matter according to the third embodiment of the present invention will be described. FIG. 8 is a schematic view of a forgery-preventing printed material according to the third embodiment. The commuter pass 21 is provided with an annular portion 21a on which a moire pattern to be described later is printed, and a copy image to be described later is printed on the entire surface 21b other than the annular portion 21a. Other configurations are almost the same as the forgery prevention printed matter of the first embodiment.
[0044]
The copy image of this embodiment will be described. The copy image is composed of a third halftone dot and a fourth halftone dot. FIG. 9 is a diagram schematically showing only a portion where the copy image 22 is formed in the commuter pass 21 of the present embodiment (the entire surface 21b other than the annular portion in FIG. 8). A third halftone dot 22a is provided in the portion 24a shaped with a plurality of “copy” characters, and a fourth halftone dot 22b is provided in the other portion 24b.
[0045]
The points forming the third halftone dot 22a are arranged so as to be positioned at the centers of a plurality of frames formed by intersecting two line groups having a line density of 175 lines / inch having different directions. It is a thing. The size of these points occupies a predetermined area ratio in each frame, but the area ratio decreases continuously from the left to the right of the commuter pass 21.
[0046]
The points forming the fourth halftone dot 22b are arranged so as to be positioned at the center of each of a plurality of frames formed by intersecting two line groups having a line density of 65 lines / inch having different directions. It is a thing. The size of these points occupies a predetermined area ratio in each frame, but as with the third halftone dot 22a, the area ratio is continuous from the left to the right of the commuter pass 21. Become smaller. At this time, the area ratio with respect to each frame of the point forming the third halftone dot 22a and the point forming the fourth halftone dot 22b in the commuter pass 21 is equal between the points arranged in the vertical direction. This is different from the point adjacent in the horizontal direction.
[0047]
Thus, in the copy image 2 of the present embodiment, the size of the dots forming the third halftone dot 22a and the fourth halftone dot 22b decreases continuously from left to right. 21 is a color tone having a so-called gradation in which the color is darkest on the left side and gradually becomes lighter toward the right. The third halftone dot 22a and the fourth halftone dot 22b are different in size, but each point is fine and the area occupied by the point per unit area is the same as in the first embodiment. Since they are almost the same, they cannot be distinguished visually, and the “copy” character cannot be confirmed. With the above configuration, the copy image 22 according to the present embodiment can be adapted to a copying machine having a wider resolution.
[0048]
In FIG. 9, in order to distinguish between the third halftone dot 22a and the fourth halftone dot 22b, the difference in the size of each point is markedly shown, and the formation portion 24a of the third halftone dot 22a is indicated by a dotted line. Although enclosed, these points are inherently very fine and no dotted lines are provided.
[0049]
When the copy image 22 is copied, if the copy resolution is relatively high, the copying machine can recognize the difference between the third halftone dot 22a and the fourth halftone dot 22b, and the third halftone dot 22a and the fourth halftone dot 22b. It tries to appear on the copy in a state different from the halftone dot 22b. The point of the fourth halftone dot 22b is clearly reproduced and becomes a dark color as a whole, but the third halftone dot 22a is reproduced as a finer and thinner point than the fourth halftone dot 22b. Accordingly, the “copy” character appears white in the copy image 22 forming portion of the copy, which is clearly different from the original.
[0050]
In addition, depending on the copying machine, adjustment that can clearly reproduce even a very small dot forming a halftone dot can be performed, and thus the above-mentioned “copy” character may not be raised. However, since the third halftone dot 22a and the fourth halftone dot 22b have gradation, if the very small point forming the fourth halftone dot 22b located on the right side of the commuter pass 21 is also clearly reproduced, the color The change in shading is reduced, and the color tone becomes almost uniform throughout, and the difference from the original becomes clear.
[0051]
In the present embodiment, the copy image 22 is configured with two halftone dots. However, the copy image 22 may be configured with a halftone dot and a line, or between lines. In that case, the points and lines per unit area, or the area ratio occupied by the lines are equal for the points and lines arranged in a certain direction, or between the lines, and adjacent points or lines in another direction are the points or lines By making the area ratio different by changing the size or thickness, the two patterns cannot be distinguished in the original state, but they can be reproduced in a different state on the copy. Can do.
[0052]
The moiré pattern (not shown) provided in the annular portion 21a of the commuter pass 21 of the present embodiment is a pattern composed of a plurality of concentric circles as in the pattern 3 of the first embodiment, but is a pattern in which moiré occurs. If there is, it is not restricted to this. Further, at least a part of the commuter pass 21, for example, a copy image 22, a moire pattern, or a pattern provided elsewhere, a color distributed outside the toner color reproduction region on the chromaticity coordinates is used.
[0053]
As described above, in the forgery-preventing printed material according to the present embodiment, in the case of copying with a relatively high resolution, the characters “copy” appear in the copy image 2 forming portion of the copied material. Alternatively, the change in color shading disappears and the entire color becomes uniform. In the case of copying with a relatively low resolution, moire occurs in the portion of the moire pattern in the copy (annular portion 21a in FIG. 8). Therefore, the difference between the manuscript and the copied material becomes clear, and the copied material can be found instantly. In addition, even when the characters “copy” and moire are not clear, colors outside the toner color reproduction area on the chromaticity coordinates are used for the original, so that a color that does not exist in the original appears on the copy. Therefore, the anti-counterfeit printed matter of the present embodiment can obtain a copy that can be judged to be different from the original at a glance at any resolution.
[0054]
Next, an anti-counterfeit printed matter according to the fourth embodiment of the present invention will be described. The anti-counterfeit printed matter of the present embodiment has substantially the same configuration as the anti-counterfeit printed matter of the first embodiment, and a commuter pass as a background portion, the same copy imaginary as the first embodiment at the center (see FIG. 2) Is provided, and a moire pattern described later is printed on the entire surface other than the circular portion.
[0055]
The moire pattern 33 of this embodiment will be described. FIG. 11 is a diagram schematically showing only the moire pattern 31 in the commuter pass 31 of the present embodiment. The moiré pattern 33 is composed of a plurality of concentric circles, and these concentric circles are in a state in which the spatial frequency is increased in proportion to the distance from the center, that is, the line widths and intervals become narrower from the center outward. The line width is about 0.5 m / m near the center and continuously decreases toward the outside and changes to about 0.1 m / m.
[0056]
When the moiré pattern 33 is copied, moiré appears in the portion of the moiré pattern 33 of the copy regardless of the scanning direction of the copying machine. Further, in this embodiment, the line width and interval of the circle are changed in proportion to the distance from the center. Therefore, moire easily occurs when the resolution is relatively low in the portion where the line width of the circle is thick. Moire tends to occur in the narrow portion when the resolution is relatively high. The same effect can be obtained with a moire pattern in which the interval between adjacent circles is constant and only the line width is changed.
[0057]
In the present embodiment, the moire pattern 33 is configured by concentric circles, but the present invention is not limited to this, and moire can be generated even by a plurality of polygons and ellipses having the same center. Moreover, although the line width of the concentric circles is gradually reduced, an enlarged moire pattern may be used. Further, similarly to the moire pattern 13 of the second embodiment, it may be a spiral (spiral) consisting of a single line or a shape similar to an ellipse connecting semicircles with two straight lines. It does not matter (see FIGS. 12 and 13).
[0058]
As described above, in the anti-counterfeit printed material according to the present embodiment, in the case of copying with a relatively high resolution, the character “NO” appears in the copy image forming portion of the copied material, and the line width of the circle of the moire pattern 33 is thin. Moire occurs in the part. In the case of copying with a relatively low resolution, moire occurs in a portion where the line width of the circle of the moire pattern 33 in the copy is thick. Therefore, the difference between the manuscript and the copy becomes clear, and the copy can be found instantly.
[0059]
Further, in addition to the copy image and moire pattern 33 described above, as in the first embodiment, at least a part of the commuter pass 31 uses a color distributed outside the toner color reproduction area on the chromaticity coordinates. Colors that do not exist in the manuscript appear on the object. Therefore, the anti-counterfeit printed matter of the present embodiment can obtain a copy that can be judged to be different from the original at a glance at any resolution.
[0060]
【The invention's effect】
  As explained above,The present inventionIn the case of non-counterfeit printed matter, when copying at a relatively high resolution, characters and patterns that do not exist in the original appear due to copy imagination, and when copied at a relatively low resolution, the moire pattern causes moiré that does not exist in the original. Appears in a copy. Therefore, a copy different from the original can be obtained with any resolution copy.
[0061]
  In particular,The present inventionThe forgery-preventing printed material causes moiré in at least a part of the copied material regardless of the resolution at the time of copying, so that the difference between the original and the copied material becomes clear. In addition, the non-constant spacing and line width of the moire pattern are gradually enlarged or reduced from the center toward the outside, so that the design of the printed matter is not impaired.
[0062]
  Also,The present inventionThe anti-counterfeit printed material does not show the difference between the two halftone dots even when copied on a copier that can be adjusted to clearly reproduce the very small dots that form halftone dots, but the halftone dot disappears. The color becomes uniform throughout. Accordingly, a wider range of resolutions can be supported.
[0063]
  The present inventionIn the anti-counterfeit printed matter, the color pattern distributed outside the toner color reproduction area on the chromaticity coordinates is not reproduced in the same color as the original even if copied.,Along with the characters and moire generated by the piimage and moire patterns, the difference between the manuscript and the copy is further clarified.
[Brief description of the drawings]
FIG. 1 is a schematic view of a forgery-preventing printed material according to a first embodiment of the present invention.
FIG. 2 is a diagram schematically showing only a portion where a copy image 2 is formed in the commuter pass 1 of the first embodiment.
3 is a diagram schematically showing a copied copy image 2 of FIG. 2;
FIG. 4 is a diagram schematically showing only the moire pattern 3 in the commuter pass 1 of the first embodiment.
FIG. 5 is chromaticity coordinates representing colors used in the forgery-preventing printed material according to the first embodiment.
FIG. 6 is a diagram schematically showing only a portion where a copy image 12 is formed in a commuter pass 11 according to the second embodiment of the present invention.
FIG. 7 is a diagram schematically showing only the moire pattern 13 in the commuter pass 11 of the second embodiment.
FIG. 8 is a schematic view of a forgery-preventing printed matter according to a third embodiment of the present invention.
FIG. 9 is a diagram schematically showing only a portion where the copy image 22 is formed in the commuter pass 21 of the third embodiment.
FIG. 10 is an enlarged view of (A) first halftone dot 2a and (B) second halftone dot 2b per unit area in the first embodiment.
FIG. 11 is a diagram schematically showing only a moire pattern 33 in a commuter pass 31 according to the fourth embodiment.
FIG. 12 is a diagram schematically showing another moire pattern 13a in the second embodiment.
FIG. 13 is a diagram schematically showing another moire pattern 13b in the second embodiment.
[Explanation of symbols]
1 commuter pass
2 Copy image
2a First halftone dot
2b Second halftone dot
3 Moire patterns
4a Formation part of the first halftone dot 2a
4b Formation part of second halftone dot 2b
11 commuter pass
12 Copy image
12a first line
12b Second line
13 Moire pattern
13a, 13b Moire pattern
14a Forming part of the first line 12a
14b Second line 12b forming part
21 commuter pass
22 Copy image
22a Third halftone dot
22b Fourth halftone dot
24a Third dot formation portion 22a
24b Formation portion of the fourth halftone dot 22b
31 commuter pass
33 Moire Pattern

Claims (7)

A first region in which a first pattern made up of a large number of fine elements is formed, and a second area in which a second pattern made up of a large number of fine elements having a size different from the fine elements of the first pattern is formed. And having an area of
When configured copy Imaje by said first and second regions are in contact, a plurality of polygons to be the same the center of the respective shapes, or circular, or oval are formed are arranged without overlapping at least a portion of the moire patterns that, is subjected,
In the moire pattern, an interval between adjacent polygons, circles, or ellipses is gradually enlarged or gradually reduced from the center of each figure to the outside, or density is generated. Anti-counterfeit printed matter. A substantially rectangular printed body;
A first region provided on the printed material body, on which a first pattern composed of a plurality of fine elements is formed;
A second region provided in the printed material body and formed with a second pattern composed of a number of fine elements having a size different from the fine elements of the first pattern;
A copy image formed by contacting the first area and the second area, and a moire pattern in which a plurality of ellipses having the same center are arranged without overlapping,
The forgery-preventing printed material, wherein the ratio of the short diameter to the long diameter of the plurality of ellipses is substantially the same as the ratio of the short side to the long side of the printed body. The fine elements and fine elements of the second pattern of the first pattern, the dots or points and lines, or claim 1 or claim 2, characterized in that either of the lines and line Anti-counterfeit prints. 2. The forgery-preventing printed matter according to claim 1, wherein in the moire pattern, the line width of a polygon, a circle, or an ellipse is gradually enlarged or reduced in proportion to the distance from the center.   2. The forgery-preventing printed matter according to claim 1, wherein in the copy image, the area occupied by the fine elements of the first pattern and the fine elements of the second pattern changes in an inclined or stepwise manner. . Claims, characterized in that said at any point of the copy Imaje, a crucible area Togaho occupied by fine elements of the first pattern of the area occupied by the microelements second pattern per unit area same The forgery prevention printed matter according to claim 1 or 5. At least one of the copy image, the moire pattern, and the pattern other than the copy image and the moire pattern uses a color distributed outside the color reproduction region of the toner on the chromaticity coordinates. The forgery prevention printed matter according to any one of claims 1 to 6.

Images