JP6145776B2 - Anti-counterfeit printed matter - Google Patents

Description

  The present invention relates to an anti-counterfeit printed matter that requires prevention of counterfeiting or copying of banknotes, stock certificates, securities such as bonds, various certificates and important documents.

  Valuable printed matter such as banknotes, stock certificates, bonds and other securities, various certificates and important documents are required to be difficult to forge or duplicate. In addition, a technique for determining whether a valuable printed material is genuine or counterfeit is also required. As one of the means, anti-counterfeiting technology, in which a latent image appears by some means, has been adopted for a long time for precious printed matter.

  The anti-counterfeiting technique in which the latent image appears is effective by using an image line that is raised and printed with intaglio ink or the like. For example, as shown in the anti-counterfeit printed matter 1 ′ in FIG. 16, the printed pattern formed in the latent image print region 3 ′ on the base material 2 ′ is an image line 6 ′ that forms the latent image portion 4 ′. The image line 8 ′, the image line 7 ′ forming the background portion 5 ′, and the non-image line 9 ′ are arranged by a line-shaped image line having a difference in two directions of 90 degrees. When the printed surface of the anti-counterfeit printed matter 1 ′ is observed from the front, the latent image pattern “P” formed by the applied latent image portion 4 ′ cannot be easily recognized. As described above, when observed from the S1 direction (oblique) shown in FIG. 16, for example, a raised image line such as an intaglio ink overlaps depending on the viewing angle with an adjacent image line in the image line group. This area has a lower brightness than the area of the latent image portion 4 '. Thereby, the latent image pattern “P” character composed of the latent image portion 4 ′ and the background portion 5 ′ appears as a visible image. The feature of this technique is that it is possible to easily determine authenticity without preparing a separate determination tool.

  For example, in Japanese Examined Patent Publication No. 56-19273, a printing surface is obtained by intaglio printing an image composed of vertical and horizontal lines on a printing substrate as a method of displaying an image by inclining the printed matter. When the image is observed from directly above, a method is disclosed in which a latent image that cannot be confirmed is visualized when observed from a different angle (see, for example, Patent Document 1).

  In Japanese Patent Laid-Open No. 2004-90381, a first message image is printed with optically changing ink on the surface of a base material, and the image is composed of equally-spaced line drawings with ink that rises on the first message image. A second message image composed of a line pattern is overprinted, and the second message image is divided into a background portion and at least one latent image portion, and the background portion and at least one latent image portion are arranged in a line drawing. There is disclosed a printed matter capable of authenticating authenticity, characterized by comprising line patterns with different directions (see, for example, Patent Document 2).

Japanese Patent Publication No. 56-19273 JP 2004-90381 A

  In the above-described conventional printed matter, the feature of this technique is an excellent technique that makes it possible to easily determine authenticity without preparing a separate determination tool. However, in general, the conventional technique shown in FIG. 16 has the same line width, pitch, and ink height (height) of the image line arranged in the latent image portion and the image line arranged in the background portion. Or they were almost identical. For this reason, when the latent image pattern is viewed, when the image is observed at a shallow angle from any of the directions S1 to S4 shown in FIG. 16, the density of the latent image portion and the background portion are shown as shown in FIG. 18 is a problem that the latent image pattern is difficult to visually recognize because a large change in the density difference is not obtained, and when viewed at a deep angle from any of the S1 to S4 directions shown in FIG. For the first time, the latent image pattern was clearly visible. Further, when viewed from any of the S5 to S8 directions shown in FIG. 16, the density difference between the latent image portion and the background portion cannot be obtained as shown in FIGS. 19A to 19D, so that the latent image is displayed. There was a problem that was difficult to see.

  In order to solve this problem, the line width of the image line arranged in the latent image portion is different from the line width of the image line arranged in the background portion, or the pitch of the image line arranged in the latent image portion. By changing the pitch of the image lines arranged in the background portion, the latent image pattern can be visually recognized without increasing the observation angle. However, by changing the image line width and pitch of the latent image portion and the background portion, there is a problem that the latent image pattern is easily recognized when the printed surface of the printed material is observed from the front.

  Therefore, the present invention aims to solve the above-described problems, and specifies the observation direction in order to visually recognize the latent image pattern even if the latent image portion and the background portion have the same line width and pitch. Therefore, the present invention proposes an anti-counterfeit printed matter in which a large change occurs in the difference between the density of the latent image portion and the density of the background portion without increasing the observation angle, and the latent image pattern can be clearly recognized.

  The anti-counterfeit printed matter of the present invention is formed by arranging a latent image portion formed by arranging swelled image lines in the first direction and an image line swelled in the second direction on the substrate. A latent image is formed by the background portion, and the height of the image line arranged in the latent image portion is different from the height of the image line arranged in the background portion, and the print material is tilted at a predetermined angle and observed. In this case, the latent image is observed.

  In the forgery-preventing printed matter of the present invention, the image lines arranged in the latent image portion are arranged at the same pitch or substantially the same pitch, and at the same image line width or substantially the same image line width, and arranged in the background portion. The image lines are arranged at the same pitch or substantially the same pitch as the pitch, and at the same image line width or substantially the same image line width as the image line width.

  In the forgery-preventing printed matter of the present invention, the arrangement direction of image lines that swell in the first direction and the arrangement direction of image lines that swell in the second direction are different in the range of 45 to 135 degrees. And

  Further, the forgery-preventing printed matter of the present invention is characterized in that the image line height is 0.01 to 0.10 mm.

  Further, the forgery-preventing printed matter of the present invention is characterized in that the difference between the height of the image line arranged in the latent image portion and the height of the image line arranged in the background portion is 0.01 to 0.09 mm. To do.

  In addition, the forgery-preventing printed matter of the present invention is characterized in that the image line width is 0.05 to 0.3 mm.

  In addition, the forgery-preventing printed material of the present invention is characterized in that the image line pitch is 0.1 to 0.6 mm.

  The anti-counterfeit printed material of the present invention specifies the observation direction in order to visually recognize the latent image pattern by making the height of the image line arranged in the latent image portion different from the height of the image line arranged in the latent image portion. Even if the observation angle is shallow, a large change occurs in the difference between the density of the latent image portion and the density of the background portion, and the latent image pattern can be clearly recognized.

  In addition, even if the latent image portion and the background portion of the forgery-preventing printed material of the present invention have the same image line width, substantially the same image line width, the same pitch, or substantially the same pitch, even if the observation angle is shallow, the latent image portion A large change occurs in the difference between the image density and the background image density, and the latent image pattern can be clearly seen.

It is explanatory drawing of the forgery prevention printed matter of this invention. It is a partial cross section figure of the forgery prevention printed matter of this invention. This is a state when the printed surface of the forgery prevention printed matter 1 (form 1) is observed from the front. This is a state when the anti-counterfeit printed matter (form 1) is observed obliquely in the S1 direction. It is a figure which shows the observation state of the drawing line of the background part. This is a state when the anti-counterfeit printed matter (form 1) is observed obliquely in the S3 direction. FIG. 6 is a diagram illustrating an observation state of an image line 6 of the latent image portion 4. This is a state when the anti-counterfeit printed matter (Form 1) is observed from any one of the directions S5 to S8 shown in FIG. It is a figure which shows the observation state of the image line 6 of the latent image part 4, and the image line 7 of the background part 5. FIG. This is a state when the anti-counterfeit printed matter (Form 2) is observed from any one of the directions S5 to S8 shown in FIG. It is a figure which shows the observation state of the image line 6 of the latent image part 4, and the image line 7 of the background part 5. FIG. It is a figure which shows the image. 1 is a diagram illustrating a forgery-preventing printed material 1a according to Example 1. FIG. It is a figure which shows the effect | action of the forgery prevention printed matter 1a of Example 1. FIG. It is a figure which shows the effect | action of the forgery prevention printed matter 1a of Example 1. FIG. It is a figure which shows the conventional forgery prevention printed matter 1 '. It is a figure which shows the effect | action of the conventional forgery prevention printed matter 1 '. It is a figure which shows the problem of the conventional forgery prevention printed matter 1 '. It is a figure which shows the problem of the conventional forgery prevention printed matter 1 '.

  Hereinafter, the anti-counterfeit printed matter of the present invention will be described with reference to the drawings as an embodiment for carrying out the present invention. However, the present invention is not limited to the embodiments to be described below, and includes various other embodiments within the scope of the technology described in the claims.

(Form 1 of anti-counterfeit printed matter)
FIG. 1 is an explanatory diagram of a forgery-preventing printed matter 1 according to the present invention. As shown in FIG. 1, the anti-counterfeit printed matter 1 of the present invention has a latent image printing region 3 on a base 2. The latent image printing area 3 is divided into a latent image portion 4 and a background portion 5. The latent image portion 4 is formed as a line drawing line by alternately arranging a plurality of image lines 6 and non-image line portions 8 in the X direction which is the first direction, and the background portion 5 is imaged in the Y direction which is the second direction. A plurality of lines 7 and non-image line portions 9 are alternately arranged to form a line image line.

  FIG. 2 is a cross-sectional view taken along the line XX ′, which is a partially enlarged view of the dotted line in FIG. As shown in FIG. 2A, the ink height h that is the height of the plurality of image lines 6 that form the latent image portion 4 is the height h <b> 1, and the plurality of image lines 7 that form the background portion 5. The height h that is the height of ink is the height h2. At this time, the relationship between the height h1 of the plurality of image lines 6 forming the latent image portion 4 and the height h2 of the plurality of image lines 7 forming the background portion 5 is a relationship of h1 <h2. The difference between the height h1 of the plurality of image lines 6 forming the latent image portion 4 and the height h2 of the plurality of image lines 7 forming the background portion 5 has a height h3. The anti-counterfeit printed matter 1 shown in FIG.

  FIG. 2B is a form different from the form shown in FIG. 2A, and the ink amount h that is the height of the plurality of image lines 6 forming the latent image portion 4 is a height h4. The ink height h that is the height of the plurality of image lines 7 that form the background portion 5 is the height h5. At this time, the relationship between the height h4 of the plurality of image lines 6 forming the latent image portion 4 and the height h5 of the plurality of image lines 7 forming the background portion 5 is a relationship of h4> h5. The difference between the height h4 of the plurality of image lines 6 forming the latent image portion 4 and the height h5 of the plurality of image lines 7 forming the background portion 5 has a height h6. The forgery prevention printed matter 1 shown in FIG.

(Operation of Form 1)
FIG. 3 shows a state when the printed surface of the anti-counterfeit printed matter 1 (form 1) is observed from the front. When the printed surface of the anti-counterfeit printed matter 1 (form 1) is observed from the front, the difference between the brightness of the latent image portion 4 and the brightness of the background portion 5 is not greatly changed, and the latent image pattern is difficult to visually recognize. It is. In particular, the line area ratio per unit area becomes the same by making the line width and pitch of the line arranged in the latent image part and the line arranged in the background part the same or substantially the same. The latent image pattern is difficult to visually recognize.

  FIG. 4 shows a state in which the forgery-preventing printed matter (form 1) is observed from an oblique direction in the S1 direction shown in FIG. Although the brightness of the background portion 5 is low, the latent image portion 4 is visually recognized at a brightness higher than that of the background portion 5, so that the latent image pattern is visually recognized due to the brightness difference between the latent image portion 4 and the background portion 5. Is done. This principle will be described. The image line 6 of the latent image portion 4 is not visually recognized because the adjacent image lines 6 overlap each other due to the observation angle and the ink volume of the image line 6. Since it is visually recognized as it is, the area of the latent image portion 4 is visually recognized with substantially the same brightness as that observed from the front. On the other hand, as shown in FIG. 5, the image line 7 of the background portion 5 is visually recognized because the adjacent image lines 7 overlap each other due to the observation angle and the ink volume of the image line 7. As shown in FIG. 5A, the non-image area 9 is lost by the image occlusion area 10 or the non-image area 9 is partially removed by the image occlusion area 10 as shown in FIG. Since it is visually recognized in the disappeared state, the region of the background portion 5 is visually recognized at a lower brightness than when observed from the front. Therefore, a difference in brightness occurs between the latent image portion 4 and the background portion 5, and the latent image pattern is visually recognized. The anti-counterfeit printed matter (form 1) can obtain the same effect when observed from the oblique direction in the S2 direction shown in FIG. When observed from the oblique direction of the S1 direction or the S2 direction, the latent image pattern of the forgery prevention printed matter (form 1) is visually recognized in a negative state.

  FIG. 6 shows a state in which the forgery-preventing printed matter (form 1) is observed from an oblique direction in the direction S3 shown in FIG. Although the lightness of the latent image portion 4 is low, the background portion 5 is visually recognized with a lightness higher than that of the latent image portion 4, so that the latent image pattern is caused by the lightness difference between the latent image portion 4 and the background portion 5. Visible. This principle will be described. Since the image line 7 of the background part 5 is not visually recognized because the adjacent image lines 7 overlap each other due to the observation angle and the ink amount of the image line 7, the non-image part of the image line 7 remains as it is. Therefore, the area of the background portion 5 is visually recognized with substantially the same brightness as that observed from the front. On the other hand, as shown in FIG. 7, the image line 6 of the latent image portion 4 is visually recognized because the adjacent image lines 6 overlap each other due to the observation angle and the ink volume of the image line 6. As shown in FIG. 7A, the non-image area 8 is lost by the image occlusion area 10, or the non-image area 8 is completely lost by the image occlusion area 10 as shown in FIG. Since it is visually recognized in a state where the portion has been lost, the area of the latent image portion 4 is visually recognized with a lower brightness than when observed from the front. Therefore, a difference in brightness occurs between the latent image portion 4 and the background portion 5, and the latent image pattern is visually recognized. The anti-counterfeit printed matter (Embodiment 1) has the same effect when observed from an oblique direction in the direction S4 shown in FIG. When observed from the oblique direction of the S3 direction or the S4 direction, the latent image pattern of the forgery-preventing printed matter (form 1) is visually recognized in a positive state.

  FIG. 8 shows a state in which the forgery-preventing printed matter (form 1) is observed from any one of the directions S5 to S8 shown in FIG. FIG. 8A shows a state when observed obliquely in the S5 direction, FIG. 8B shows a state observed when obliquely viewed in the S6 direction, and FIG. 8C shows an observed state obliquely in the S7 direction. FIG. 8D shows a state when observed from an oblique direction in the S8 direction. Although the brightness of the background portion 5 is low, the latent image portion 4 is visually recognized at a brightness higher than that of the background portion 5, so that the latent image pattern is visually recognized due to the brightness difference between the latent image portion 4 and the background portion 5. Is done. This principle will be described. As shown in FIG. 9A, when the image is observed at a predetermined angle θ1, the image line 7 of the background portion 5 is visually recognized by overlapping the image lines 7 adjacent to each other due to the observation angle and the ink amount of the image line 7. Therefore, since the non-image portion 9 is lost by the image concealment region 10, the region of the background portion 5 is visually recognized with lower brightness than when observed from the front. On the other hand, when viewed at a predetermined angle θ1, as shown in FIG. 9B, the image line 6 of the latent image portion 4 is adjacent to the image angle due to the observation angle and the ink amount of the image line 6. Although the lines 6 are visually recognized by being overlapped with each other, the non-image area 8 is visually recognized in a state where only a part of the non-image area 8 is disappeared by the image line concealment area 10. Although it is visually recognized with low brightness, it is visually recognized with higher brightness than the background portion 5. Therefore, a difference in brightness occurs between the latent image portion 4 and the background portion 5, and the latent image pattern is visually recognized. When observed from an oblique direction in any of the S5 to S8 directions, the latent image pattern of the anti-counterfeit printed matter (form 1) is visually recognized in a negative state.

(Operation of Form 2)
The effect | action of the forgery prevention printed matter 1 (form 2) is demonstrated. When the anti-counterfeit printed matter 1 (form 2) is observed from the front, the operation is the same as that of the form 1 and is omitted. Further, the case where the anti-counterfeit printed matter 1 (form 2) is observed from an oblique direction in any of the directions S1 to S4 shown in FIG. FIG. 10 shows a state when the forgery prevention printed matter (form 2) is observed from an oblique direction in any of the directions S5 to S8 shown in FIG. FIG. 10A shows a state when observed from the oblique direction in the S5 direction, FIG. 10B shows a state obtained when observed from the oblique direction in the S6 direction, and FIG. 10C shows an observed state from the oblique direction in the S7 direction. FIG. 10D shows a state when observed from the oblique direction in the S8 direction. Although the lightness of the latent image portion 4 is low, the background portion 5 is visually recognized with a lightness higher than that of the latent image portion 4, so that the latent image pattern is caused by the lightness difference between the latent image portion 4 and the background portion 5. Visible. This principle will be described. As shown in FIG. 11A, when the image line 6 of the latent image portion 4 is observed at a predetermined angle θ1, the adjacent image lines 7 overlap each other due to the observation angle and the ink amount of the image line 6. Since it is visually recognized, the non-image area 8 is lost by the image-line concealment area 10, and therefore the area of the latent image area 4 is visually recognized with lower brightness than when observed from the front. On the other hand, when viewed at a predetermined angle θ1 as shown in FIG. 11B, the image line 7 of the background portion 5 is adjacent to the image line due to the observation angle and the ink amount of the image line 7. 7 are overlapped and visually recognized, but the non-image portion 9 is visually recognized in a state in which only a part of the non-image portion 9 is lost by the image-line concealment region 10, so that the region of the background portion 5 has a lower brightness than that observed from the front. However, it is visually recognized with higher brightness than the latent image portion 4. Therefore, a difference in brightness occurs between the latent image portion 4 and the background portion 5, and the latent image pattern is visually recognized. When observed from an oblique direction in any of the S5 to S8 directions, the latent image pattern of the anti-counterfeit printed matter (form 1) is visually recognized in a positive state.

(Description of base material)
As the substrate 2 in the present invention, fine paper, coated paper, paper sheets such as art paper, films, plastics and the like can be used, and if the image line formed in the latent image printing region 3 can be formed, It is not particularly limited. However, since it is necessary to have a brightness difference between the base material and the image line, when the base material has a high brightness of white, the image line is preferably low brightness such as black. Alternatively, when the substrate has a black color with low brightness, the image line preferably has a high brightness such as white. This is because the difference in brightness between the substrate and the image line is used to visually recognize the latent image pattern. That is, as the brightness of the substrate 2 and the brightness of the image line are higher, the effect of the present invention can be achieved.

(Explanation of latent image printing area, latent image portion and latent image portion)
The latent image print region 3 described in the specification is a region where the image line 6 of the latent image portion 4 and the image line 7 of the background portion 5 are formed, and is actually printed on the outline of the region. Etc. are not formed. However, an image line can also be formed on the outline of the latent image printing area 3. Similarly, the latent image portion 4 is a region where the image line 6 is formed, and the background portion 5 is a region where the image line 7 is formed. Is not formed. However, an image line can also be formed on the outline of the latent image portion 4 and / or the background portion 5.

(Description of strokes and non-drawings)
The image line 6 that forms the latent image portion 4 and the image line 7 that forms the background portion 5 need to be formed with a raised image line. The printing method is not particularly limited as long as a rising image line can be formed, but intaglio printing, screen printing, foam printing, or the like is preferable. The type of ink is not particularly limited, but preferably has a lightness difference from the substrate. Moreover, the authenticity determination effect by a reader can also be provided by mix | blending the pigment provided with a magnetic characteristic and an optical characteristic with ink.

  The height of the image line 6 that forms the latent image portion 4 and the image line 7 that forms the background portion 5 is preferably in the range of 0.01 to 0.10 mm. When the height of the image line 6 forming the latent image portion 4 and the image line 7 forming the background portion 5 is less than 0.01 mm, when the forgery prevention printed matter 1 is observed obliquely, Due to the amount of ink, the area where the non-image area is disappeared by the image line concealment region 10 is extremely small, and the latent image pattern is difficult to visually recognize. When the height of the image line 6 forming the latent image portion 4 and the image line 7 forming the background portion 5 is higher than 0.10 mm, it is difficult to create. Therefore, the height of the image line is 0.01 mm or more, preferably 0.02 to 0.10 mm.

  The difference between the height of the image line arranged in the latent image portion and the height of the image line arranged in the background portion is preferably 0.01 to 0.09 mm. When the difference between the height of the image line arranged in the latent image portion and the height of the image line arranged in the background portion is smaller than 0.01, when observed from an oblique direction in any of the S5 to S8 directions described above In addition, since the brightness difference due to the height of the image line between the background portion and the latent image portion cannot be obtained, the latent image pattern is hardly visible. Further, when the difference between the height of the image line arranged in the latent image portion and the height of the image line arranged in the background portion is larger than 0.09, the range of the preferred image line height described above is exceeded. Problem arises. Further, the difference between the height of the image line arranged in the latent image portion and the height of the image line arranged in the background portion is preferably 0.02 to 0.09 mm.

  The image line 6 forming the latent image portion 4 and the image line 7 forming the background portion 5 are regularly arranged. The line widths of the line 6 and the line 7 can be 0.05 to 0.3 mm, and preferably 0.1 to 0.2 mm. Furthermore, the line pitch of the line 6 and the line 7 can be 0.1 to 0.6 mm, and preferably 0.2 to 0.3 mm. However, if the line width of the non-image line is less than 0.02 mm, image line clogging or wiping residue is likely to occur during printing. Therefore, the image line width of the non-image line is preferably set to 0.02 mm or more.

  Further, the ratio of the image line width of the image line 6 forming the latent image portion 4 and the image line 7 forming the background portion 5 to the non-image line width is: image line width: non-image line width = 1: 1 to 3: 1 is desirable. The reason is that if the ratio of the line width is higher than the above-mentioned ratio, the latent image pattern becomes dark, and the design is restricted. On the other hand, if the ratio of the image line width is lower than the above-described ratio, the non-image line cannot be hidden by the image line when viewed from a predetermined observation angle. However, this does not apply to the case where the latent image portion 4 and the background portion 5 are formed with a thick line as a camouflage pattern. Further, the image lines 6 arranged in the latent image portion 4 are arranged at the same pitch or substantially the same pitch and at the same image line width or substantially the same image line width, and the image line 7 arranged in the background portion 5 is latent. It is preferable that the pitch is the same as or substantially the same as the pitch of the image line 6 of the image portion 4, and is the same or substantially the same image width as that of the latent image portion 4.

  The arrangement direction of the image line 6 forming the latent image portion 4 and the arrangement direction of the image line 7 forming the background portion 5 are preferably different within a range of 45 to 135 degrees. If the angle is outside the range of 45 to 135 degrees, the brightness difference between the latent image portion 4 and the background portion 5 is low, causing a problem that the latent image pattern is difficult to visually recognize. However, even if it is outside the range of 45 to 135 degrees, the anti-counterfeit printed matter 1 has a difference in height between the image line 6 and the image line 7, so that the latent image portion 4 and the background portion are more than the conventional latent image printed matter. A lightness difference is generated in 5 and the latent image pattern can be visually recognized.

  The image line 6 that forms the latent image portion 4 and the image line 7 that forms the background portion 5 are not particularly limited, such as a straight line, a curved line, a broken line, an alternate long and short dash line, and a minute character. Most preferred.

  As described above, the image line design of the anti-counterfeit printed matter of the present invention may be designed by appropriately combining the image line height, image line width, image line pitch, arrangement direction, and image line type within the above range.

(Switch image)
In the forgery-preventing printed matter of the present invention, as shown in FIG. Can be formed. The ink of the image 10 is not particularly limited as long as the color described above is different, but an optically changing ink such as pearl ink is preferable. By forming the image 10 with pearl ink, the latent image pattern and the image 10 can be switched and viewed according to the observation angle. Details are described in Japanese Patent No. 4247906.

(Camouflage image)
The anti-counterfeit printed matter of the present invention is arranged so that the image line 7 arranged in the background portion 5 is arranged with a different area ratio per unit length of at least a part of the image line 6 of the latent image portion 4 from directly above. A camouflage pattern can be formed to make it difficult to visually recognize the latent image pattern when observed. In addition, when the image line 7 arranged in the background portion 5 is observed from directly above by shifting the phase of the image line 6 of the latent image portion 4, a camouflage pattern is used to make it difficult to visually recognize the latent image pattern. Can be formed. Details are described in Japanese Patent No. 4247906.

Example 1
FIG. 13 shows an anti-counterfeit printed matter 1a according to the first embodiment of the present invention. In the anti-counterfeit printed matter 1a of Example 1, the latent image portion 4a and the background portion 5a were printed on a white paper 2a by using an intaglio printing machine using black ink. Here, in the latent image portion 4a, the width of the image line 6a is 0.15 mm, the width of the non-image line 8a is 0.10 mm, the pitch is 0.25 mm, the height of the image line 6a is 0.02 mm, and the width of the white paper 2 is When the direction is set to 0 degrees, the arrangement direction of the image lines 6a is set to 0 degree to form a plurality of image lines 6a. Here, the background portion 5a has a width of the image line 7a of 0.15 mm, a width of the non-image line 8a of 0.10 mm, a pitch of 0.25 mm, a height of the image line 7a of 0.04 mm, and the white paper 2 When the horizontal direction is 0 degree, the arrangement direction of the image lines 7a is 90 degrees to form a plurality of image lines 7a.

  FIG. 14A shows a state when the printed surface of the anti-counterfeit printed matter 1a is observed from the front. When the printed surface of the anti-counterfeit printed matter 1a was observed from the front, the difference between the lightness of the latent image portion 4a and the lightness of the background portion 5a was not greatly changed, and the latent image pattern was difficult to visually recognize. FIG. 14B shows a state when the anti-counterfeit printed matter 1a is observed obliquely in the S1 direction shown in FIG. Although the brightness of the background portion 5a is low, the latent image portion 4a is visually recognized with higher brightness than the background portion 5a, and the latent image pattern can be visually recognized in a negative state. FIG. 14C shows a state in which the forgery-preventing printed material 1a is observed from an oblique direction in the direction S3 shown in FIG. Although the brightness of the latent image portion 4a is low, the background portion 5a is visually recognized with higher brightness than the latent image portion 4a, and the latent image pattern can be visually recognized in a positive state.

  FIG. 15A shows a state in which the anti-counterfeit printed material 1a is observed from any one of the directions S5 to S8 shown in FIG. FIG. 15A shows a state when observed obliquely in the S5 direction, FIG. 15B shows a state observed when obliquely viewed in the S6 direction, and FIG. 15C shows an observed state obliquely in the S7 direction. FIG. 15 (d) shows a state when observed obliquely in the S8 direction. Although the brightness of the background portion 5a is low, the latent image portion 4a is visually recognized with higher brightness than the background portion 5a, and the latent image pattern can be visually recognized in a negative state.

1, 1a, 1 ′ Anti-counterfeit printed matter 2, 2a, 2 ′ base material 3, 3 ′ latent image print area 4, 4a, 4 ′ latent image portion 5, 5a, 5 ′ background portion 6, 6a, 6 ′ latent image Image lines 7, 7 a, 7 ′ Image lines 8, 8 a, 8 ′ Non-image lines in the latent image area 9, 9 a, 9 ′ Non-image lines in the background area 10 Image 11 Camouflage pattern h, h 1, h 2 , H3, h4, h5, h6 Emitting angle θ Observation angle

Claims (2)

A latent image portion formed by arranging a line drawing line that swells in the first direction on the substrate and a latent image formed by arranging a line drawing line swelled in the second direction by the background part. An image is formed,
The height of the line drawing line arranged in the latent image part and the height of the line drawing line arranged in the background part are different,
An anti-counterfeit printed matter, wherein when the printed matter is observed at a predetermined angle, the latent image is observed from any observation direction due to a difference in density between the latent image portion and the background portion. The line drawing lines arranged in the latent image portion are arranged at the same pitch or substantially the same pitch and the same drawing line width or substantially the same drawing line width, and the line drawing lines arranged in the background portion are set to the pitch. 2. The forgery-preventing printed matter according to claim 1, wherein the forgery-preventing printed matter is arranged at the same pitch or substantially the same pitch, and at the same or substantially the same stroke width as the stroke width.

Images