JP3171660U - Anti-counterfeit paper - Google Patents

Abstract

An anti-counterfeit paper that has a high design and that makes it difficult to visually recognize a latent image with the naked eye. An anti-counterfeit paper 10 has a ground pattern 12 in which a plurality of independent basic patterns 12A are arranged on the surface of a base paper 11. The copy-forgery-inhibited pattern 12 has a first region 12B represented by a halftone dot of 133 lines or more and 5% to 20% and a line having a thickness of 0.03 mm or more and 0.4 mm or less with an interval of 0.3 mm or more and 2 mm or less. A plurality of second regions 12C represented by a line group having a concentration of 5% to 20%. When copied, the first area 12B is not reproduced or reproduced in light color, and the second area 12C is reproduced in dark color. In the copy, a subjective outline and an assimilation phenomenon occur due to the line group representing the second area 12C, and the first area 12B or the second area 12C appears as a latent image. [Selection] Figure 1

Description

  The present invention relates to an anti-counterfeit paper in which a latent image appears when it is copied by a copying machine and is recognized as a copy.

  Conventionally, in order to prevent forgery and alteration due to copying, a latent image such as “COPY” is printed on the surface of the paper, and when copied by a copying machine, the latent image appears to show that it is a copy. Paper has been proposed. For example, Patent Document 1 describes a technique in which a latent image and a background are represented using halftone dots of different sizes, and when copying, the difference in the size of the halftone dots becomes a density difference and the latent image appears. .

  However, the conventional method for representing a latent image by the difference in the size of halftone dots has a problem that the latent image is easily visible when the eyes become accustomed. In addition, the conventional method has a problem in that it is difficult to create a wide variety of patterns because of low design.

Japanese Patent Publication No.58-47708

  The present invention has been made based on such problems, and an object of the present invention is to provide a forgery-preventing sheet that makes it difficult to visually recognize a latent image with the naked eye and has high design.

  The anti-counterfeit paper of the present invention is printed with a background pattern in which a plurality of independent basic patterns are arranged. The background pattern is 133 lines or more, a first region represented by a halftone dot of 5% to 20%, and a thickness of 0.03 mm. A copy having a second area represented by a line group having a density of 5% to 20%, in which a plurality of lines of 0.4 mm or less are arranged at intervals of 0.3 mm or more and 2 mm or less, and are copied by a copying machine In the object, one of the first region and the second region appears as a latent image due to a subjective contour and an assimilation phenomenon.

  According to the anti-counterfeit paper of the present invention, a first region represented by a dot of 133 lines or more and 5% to 20% and a line having a thickness of 0.03 mm or more and 0.4 mm or less are 0.3 mm or more and 2 mm or less. Since the second region represented by a line group having a density of 5% to 20% is arranged with a plurality of intervals spaced apart from each other, the first region is not reproduced or reproduced in a light color when copied. The second region can be reproduced with a dark color. In addition, since a copy-forgery-inhibited pattern is formed by arranging a plurality of independent basic patterns, a subjective contour and an assimilation phenomenon occur due to a group of lines representing the second area in the copy, and the first area or the second area is defined. It can appear clearly as a latent image. Furthermore, since there is a non-printed surface between the basic patterns, it is possible to make it difficult to distinguish the first region and the second region with the naked eye. In addition, there is a high degree of freedom in the shape and arrangement of the basic pattern, a wide variety of patterns can be created, and the design can be enhanced. Furthermore, since there are few image line portions, there is little influence on the paper quality, and it is possible to prevent the texture of special paper or the like from being damaged.

  In particular, if the latent image is configured by the first region, the latent image can be made to appear more clearly, and the first region and the second region can be made more difficult to distinguish with the naked eye.

  Furthermore, if the second region has an annular outline drawn along the outline of the basic pattern and at least one inner line drawn at intervals inside the second area, or the second area A higher effect can be obtained if the region is regularly arranged with a plurality of straight line group regions represented by a plurality of straight lines arranged in parallel and having different straight line extending directions.

It is a figure showing a part of forgery prevention paper concerning one embodiment of the present invention. It is a figure showing a part of copy of the forgery prevention paper shown in FIG. It is a figure showing the modification of the forgery prevention paper which concerns on one embodiment of this invention. It is a figure showing the other modification of the forgery prevention paper which concerns on one embodiment of this invention. It is a figure showing the further another modification of the forgery prevention paper which concerns on one embodiment of this invention. It is a figure showing the further another modification of the forgery prevention paper which concerns on one embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(One embodiment)
FIG. 1 shows a configuration of a forgery prevention sheet 10 according to an embodiment of the present invention, and FIG. 2 shows a configuration of a copy 20 of the forgery prevention sheet 10.

  For example, the anti-counterfeit paper 10 has a ground pattern 12 on which a plurality of independent basic patterns 12A are arranged on the surface of the base paper 11. The tint block 12 may be printed over the entire surface of the base paper 11 or may be printed on a part thereof. The basic pattern 12A may have any shape such as a figure, a character, an illustration, or a logo mark. Any color can be used as long as it is reproduced by a copying machine. The size of the basic pattern 12A varies depending on the size of the printing area of the base paper 11 and the background pattern 12, or the size of the latent image. For example, the maximum length of one side is preferably about 0.3 mm or more and 297 mm or less. If it is about 3 mm or more and 50 mm or less, it is more preferable. Each basic pattern 12 </ b> A may be arranged in a completely separated manner at intervals, or may be partly in contact or partly overlapped. Each basic pattern 12A may be arrange | positioned regularly and may be arrange | positioned at random. FIG. 1 shows an example in which four-leaf patterns joined by rotating the basic pattern 12A by 90 degrees are arranged regularly.

  The copy-forgery-inhibited pattern 12 has a first region 12B represented by a halftone dot of 133 lines or more and 5% to 20% and a line having a thickness of 0.03 mm or more and 0.4 mm or less with a distance of 0.3 mm or more and 2 mm or less. A second region 12C represented by a line group having a concentration of 5% to 20% that is opened and arranged in a plurality is provided. The first area 12B is an area that is not reproduced or reproduced in light color when copied by a copying machine, and the second area 12C is an area that is reproduced in dark color when copied by a copying machine. As a result, either the first region 12B or the second region 12C forms a latent image such as “COPY”. The latent image can be constituted by either the first area 12B or the second area 12C, but is preferably constituted by the first area 12B. This is because the first region 12B and the second region 12C can be more difficult to distinguish with the naked eye, and the latent image can appear more clearly in the copy 20.

  The first region 12B and the second region 12C are not necessarily divided for each basic pattern 12A, but in one basic pattern 12A, a part is constituted by the first region 12B, and the other part is the second region. It may be composed of 12C. In FIG. 1, the first region 12 </ b> B is surrounded by a line, but this line is added for easy understanding and does not actually exist.

  The number of halftone dots in the first region 12B is generally about 133 lines to 200 lines, for example, but may be about 300 lines if it can be increased by a printing technique. The concentration of the first region 12B is preferably uniform. Further, it is preferable that the concentration of the first region 12B and the concentration of the second region 12C be approximately the same. However, since the appearance differs depending on the shape and size of the basic pattern 12A or the way the line group of the second region 12C is drawn, the density difference between them is ± 5% so that the appearance is the same, not the numerical value. It is preferable to make fine adjustments within the range. The number of halftone dots in the first region 12B is the number of halftone dots existing within a width of 1 inch (2.54 cm), and the density of halftone dots is the ratio of halftone dots in a predetermined area. It is. The density of the line group in the second region 12C is a ratio of the line group in a predetermined area.

  The line group of the second region 12C has, for example, an annular outline 12D drawn along the outline of the basic pattern 12A, and at least one inner line 12E drawn with a space inside. Yes. It is preferable that the thickness of each line of the second region 12C and the interval between the lines are substantially the same. The thickness of each line in the second region 12C is more preferably 0.03 mm or more and 0.2 mm or less, and the distance between each line is more preferably 0.3 mm or more and 1 mm or less.

  When the anti-counterfeit paper 10 is copied by a copying machine, for example, as shown in FIG. 2, the first area 12B is not reproduced or reproduced in light color, and the second area 12C is reproduced in dark color. In addition, since the copy-forgery-inhibited pattern 12 is configured by arranging a plurality of independent basic patterns 12A, the copied material 20 has a subjective outline and assimilation by a group of lines constituting the second region 12C arranged at an interval. A phenomenon occurs. The subjective contour is a phenomenon in which a shape or a line can be seen where there is no shape or a line, and is caused by an effect of complementing a missing part. Assimilation is an effect in which a specific color is affected by surrounding colors and has a similar color tone. Therefore, in the copy 20, the space between the basic patterns 12 </ b> A is complemented by the subjective outline, and the second region 12 </ b> C looks darker due to assimilation. Accordingly, the first region 12B or the second region 12C clearly appears as a latent image.

  As described above, according to the present embodiment, the first region 12B represented by a dot of 133 lines or more and 5% to 20% and a line having a thickness of 0.03 mm or more and 0.4 mm or less are 0.3 mm or more. Since the second region 12C represented by a line group having a density of 5% to 20% is arranged at intervals of 2 mm or less, when copied, the first region 12B is not reproduced or is a light color The second region 12C can be reproduced with a dark color. In addition, since the copy-forgery pattern 12 is configured by arranging a plurality of independent basic patterns 12A, a subjective outline and an assimilation phenomenon occur in the copy 20 due to the line group representing the second area 12C, and the first area 12B. Alternatively, the second region 12C can clearly appear as a latent image. Furthermore, since there is a non-printed surface between the basic patterns 12A, it is difficult to distinguish the first region 12B and the second region 12C by the naked eye. In addition, there is a high degree of freedom in the shape and arrangement of the basic pattern 12A, a wide variety of patterns can be created, and the design can be enhanced. Furthermore, since there are few image line portions, there is little influence on the paper quality, and it is possible to prevent the texture of special paper or the like from being damaged.

  In particular, if the latent image is formed by the first region 12B, the latent image can appear more clearly, and the first region 12B and the second region 12C can be more difficult to distinguish with the naked eye. it can.

  Furthermore, if the second region 12C has an annular contour line 12D drawn along the contour of the basic pattern 12A and at least one inner line 12E drawn at intervals inside the second region 12C, A higher effect can be obtained.

(Modification)
FIG. 3 shows another example of the shape of the basic pattern 12A. FIG. 3A shows the anti-counterfeit paper 10 and FIG. 3B shows the copy 20 thereof. Except for the shape of the basic pattern 12A, it is the same as the anti-counterfeit paper 10 shown in FIG. Even if comprised in this way, the effect similar to the forgery prevention paper 10 shown in FIG. 1 can be acquired.

  FIG. 4 shows another example of the configuration of the basic pattern 12A. FIG. 4A shows the anti-counterfeit paper 10 and FIG. 4B shows the copy 20 thereof. In the example shown in FIG. 4, the basic pattern 12 </ b> A has a quadrangular shape and is regularly arranged. The second region 12C is represented by a plurality of straight lines arranged in parallel, and has a plurality of straight line group regions 12F having different straight line extending directions. Other configurations are the same as those of the anti-counterfeit paper 10 shown in FIG. Even if comprised in this way, the high effect can be acquired similarly to the forgery prevention paper 10 shown in FIG.

  FIG. 5 shows still another configuration example of the basic pattern 12A. FIG. 5A shows the anti-counterfeit paper 10 and FIG. 5B shows the copy 20 thereof. In the example shown in FIG. 5, a plurality of independent basic patterns 12 </ b> A are provided. The basic pattern 12A is a character and is regularly arranged. Other configurations are the same as those of the anti-counterfeit paper 10 shown in FIG. Even if comprised in this way, the effect similar to the forgery prevention paper 10 shown in FIG. 1 can be acquired.

  FIG. 6 shows still another configuration example of the basic pattern 12A. FIG. 6A shows the anti-counterfeit paper 10 and FIG. 6B shows the copy 20 thereof. In the example shown in FIG. 6, similarly to the example shown in FIG. 5, a plurality of independent basic patterns 12 </ b> A are provided. The basic pattern 12A is a character and is regularly arranged. Similarly to the example shown in FIG. 4, the second region 12C is represented by a plurality of straight lines arranged in parallel, and a plurality of straight line group regions 12F having different straight line extending directions are regularly arranged. Have. Other configurations are the same as those of the anti-counterfeit paper 10 shown in FIG. Even if comprised in this way, the high effect can be acquired similarly to the forgery prevention paper 10 shown in FIG.

  The present invention has been described with reference to the embodiment. However, the present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above-described embodiment, the configuration of the basic pattern 12A has been specifically described. However, the basic pattern 12A may have other configurations. In the above embodiment, the case where the latent image is configured by characters such as “COPY” has been described. However, the latent image may be configured by a figure, an illustration, a logo mark, or the like. Furthermore, in the above-described embodiment, each component has been specifically described. However, not all the components may be provided, and other components may be provided.

  It can be used to prevent forgery and alteration by copying.

  DESCRIPTION OF SYMBOLS 10 ... Anti-counterfeit paper, 11 ... Base paper, 12 ... Background pattern, 12A ... Basic pattern, 12B ... 1st area | region, 12C ... 2nd area | region, 12D ... Contour line, 12E ... Inner line, 12F ... Straight line group area | region, 20 ... Copy

Claims (5)

A copy-forgery-inhibited pattern with multiple independent basic patterns is printed,
The tint block includes a first region represented by halftone dots of 133 lines or more and 5% to 20% and a line having a thickness of 0.03 mm or more and 0.4 mm or less with an interval of 0.3 mm or more and 2 mm or less. A second region represented by a line group having a concentration of 5% to 20%,
An anti-counterfeit paper characterized in that either a first area or a second area appears as a latent image in a copy copied by a copying machine due to a subjective contour and an assimilation phenomenon.   The anti-counterfeit paper according to claim 1, wherein the latent image is constituted by the first region.   The second region has an annular outline drawn along the outline of the basic pattern and at least one inner line drawn at an interval on the inside thereof. The anti-counterfeit paper according to claim 2.   The second region is represented by a plurality of straight lines arranged in parallel, and a plurality of straight line group regions having different extension directions of the straight lines are regularly arranged. Anti-counterfeit paper as described.   The anti-counterfeit paper according to any one of claims 1 to 4, wherein the tint block has a plurality of independent basic patterns.

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