JP5493109B2 - Latent image pattern former - Google Patents

Description

  The present invention is a latent image pattern forming body that is applied to valuable printed matter such as banknotes, stock certificates, securities, passports, passports, gift certificates, cards and the like that are required to be counterfeited.

  Due to the nature of precious printed matter such as banknotes, stock certificates, securities, passports, passports, cards, etc., they are required not to be counterfeited or tampered with. Prevention measures include printing with special ink, hologram, thread, minute character printing, and the like.

  As a preventive measure as described above, the applicant of the present invention is to print a printed image line by printing at least one of various line patterns or relief patterns representing a pattern by partially different angles. A latent image pattern formed body obtained by printing at least one of various line-drawing lines or halftone dot-drawing lines having a constant interval on the print-drawing line so as to be parallel or inclined with respect to the print-drawing line. (For example, refer to Patent Document 1). When the latent image pattern forming body of the invention of Patent Document 1 is tilted and observed, various latent lines or relief patterns formed by raised printing are represented by partially different angles. Various line-drawing lines or halftone-dotting lines that are printed on the image pattern (hereinafter referred to as “latent image portion”) and the background portion thereof (hereinafter referred to as “background portion”). The latent image can be observed by the different visibility.

In addition, the applicant forms a plurality of minute characters on the printing surface, and the minute character of the portion to be subjected to the latent image is composed only of a line drawing of a desired width and the latent image is not subjected to the latent image. The minute character of the part is composed by filling the outline of the character and the character string, and the line area ratio of the minute character where the latent image is applied and the minute character where the latent image is not applied is the same character Has proposed a printed matter that is equally formed (see, for example, Patent Document 2).
The printed matter of Patent Document 2 cannot observe the latent image with the naked eye because the image area ratio of the minute character in the portion where the latent image is applied and the minute character in the portion where the latent image is not applied is equal. When copying, the characters or character strings of the portion where the latent image is not applied can be reproduced, whereas the characters or character strings of the portion where the latent image is applied become poorly reproduced, and the portion and latent image where the latent image is applied A density difference occurs in a portion where no image is applied, and a latent image is observed. The printed matter of Patent Document 2 can identify whether the wording and shape of minute characters are authentic by using a magnifying glass.

Japanese Patent No. 2600094 Noto 3030534

  However, in the invention of Patent Document 1, a latent image is observed when a printed surface is tilted and observed, and it is possible to discriminate between authenticity and prevent counterfeiting. In addition, there is a possibility of copying due to advancement of printing technology, and it is necessary to further prevent forgery.

  In addition, in order to confirm that the printed matter of Patent Document 2 is an authentic printed matter, it is necessary to copy it with a copying machine or use a magnifying glass as a discriminator, and it is immediately required to determine whether the printed matter is authentic. There is a problem in some situations.

  An object of the present invention is to solve the above-described problems, and it is possible to determine authenticity without copying with a copying machine or without using a discriminator, and the conventional latent image pattern formation is performed. It is an object of the present invention to provide a latent image pattern formed body having a better anti-counterfeit effect by providing an element capable of performing a new authenticity determination in addition to a latent image observed by the body.

  The latent image pattern formed body of the present invention is a latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and a concave and / or convex first is formed on at least a part of the substrate. A first pattern in which a plurality of elements are arranged in a line and a second pattern in which a plurality of second elements having a different color from the first element are arranged in a line are formed. The element is composed of a first latent image element, a second latent image element, and a background element, and the first latent image element, the second latent image element, and the background element are all different in phase and all have the same pitch. And the second element overlaps at least two of the first latent image element, the second latent image element, and the background element with different area ratios, and the second element overlaps the first latent image element. By overlapping or not overlapping, the first latent image portion is formed and the second element overlaps the second latent image element, or The second latent image portion is formed by not becoming, and the background portion common to the first latent image portion and the second latent image portion is formed by overlapping or not overlapping the second element with the background element. The first latent image portion and the second latent image portion are determined by the difference in the area ratio of the second element that overlaps at least two of the first latent image element, the second latent image element, and the background element. Have different densities, a plurality of first latent image portions and a plurality of second latent image portions form a latent image pattern. When the substrate is tilted and observed, a plurality of first latent image portions are formed due to a difference in area ratio. The latent image portion and the plurality of second latent image portions are observed at different densities, and the pattern of the latent image pattern is observed by one of the plurality of first latent image portions or the plurality of second latent image portions. On the other hand, the background of the latent image pattern is observed.

  In the latent image pattern formed body of the present invention, the relationship between the first latent image element, the second latent image element, the background element, and the second element is 1-1) the first latent image element is the second The second element does not overlap the second latent image element, and the second element has an area ratio different from the area ratio of the second element overlapping the first latent image element without overlapping the second element. Overlap, or 1-2) The second latent image element overlaps the first latent image element, and the second latent image element has an area ratio different from the area ratio of the second element overlapping the first latent image element. The second element overlaps, the second element does not overlap the background element, or 1-3) the second element does not overlap the first latent image element, and the second element does not overlap the second latent image element. And the second element overlaps the background element with an area ratio different from the area ratio of the second element overlapping the second latent image element, or 1-4) the first latent image element The second element overlaps, the second latent image element overlaps the second element with an area ratio different from the area ratio of the second element overlapping the first latent image element, and the background element includes the first latent image. The second element overlaps with an area ratio different from the area ratio of the second element overlapping the element and the area ratio of the second element overlapping the second latent image element, and any one of 1-1) to 1-4) Thus, a first latent image portion, a second latent image portion, and a background portion are formed.

The latent image pattern formed body of the present invention is a latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and has a concave shape and / or a convex shape on at least a part of the substrate. A first pattern in which a plurality of first elements are arranged in a line and a second pattern in which a plurality of second elements having a different color from the first element are arranged in a line are formed. One element is composed of a latent image element, a first background element, and a second background element. The latent image element, the first background element, and the second background element are all different in phase and all have the same pitch. Arranged, the second element overlaps at least two of the latent image element, the first background element, and the second background element with different area ratios, and the second element overlaps the first background element, or By not overlapping, the first background portion is formed, and the second background element overlaps the second background element. Alternatively, the second background portion is formed by not overlapping, and the latent image portion common to the first background portion and the second background portion is formed by overlapping or not overlapping the second element with the latent image element. The first background portion and the second background portion are different depending on the area ratio of the second element that overlaps at least two of the latent image element, the first background element, and the second background element. A latent image pattern is formed by the first background portion and the second background portion having a density,
When the substrate is tilted and observed, the first background portion and the second background portion are observed at different densities due to the difference in area ratio, and the latent image is hidden by one of the first background portion and the second background portion. The pattern of the image pattern is observed, and on the other hand, the background of the pattern of the latent image pattern is observed.

  In the latent image pattern formed body of the present invention, the relationship between the first background element, the second background element, the latent image element and the second element is 2-1. The second element overlaps the latent image element. The second element overlaps the second background element with an area ratio different from the area ratio of the second element overlapping the latent image element without overlapping the second element with the first background element, or 2 -2) The second element overlaps the latent image element, the second element overlaps the first background element with an area ratio different from the area ratio of the second element overlapping the latent image element, and the second background element Without overlapping the second element or 2-3) without overlapping the second element with the latent image element, the second element overlaps the first background element, and the second background element The second element overlaps with an area ratio different from the area ratio of the second element that overlaps one background element, or 2-4) the second element overlaps the latent image element The second element overlaps the first background element with an area ratio different from the area ratio of the second element that overlaps the latent image element, and the area ratio of the second element that overlaps the latent image element to the second background element And the second element overlaps with an area ratio different from the area ratio of the second element overlapping the first background element, and the first background portion, the second A background portion and a latent image portion are formed.

  In the latent image pattern formed body of the present invention, the first element and the second element are composed of at least one of an image line or a pixel, or a combination thereof.

  The latent image pattern formed body of the present invention is a latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and has a concave shape and / or a convex shape on at least a part of the substrate. A first pattern in which a plurality of first elements are arranged in a line and a second pattern and a first element in which a plurality of second elements having a different color from the first element are arranged in a line And a third pattern in which a plurality of third elements having different colors from the second element are arranged in a single line is formed. The first element is a first latent image element, a second latent image element. And the first latent image element, the second latent image element, and the background element are all different in phase and arranged at the same pitch, and the first latent image element and the second latent image element And the second element overlaps one of the background elements, the third element does not overlap the plurality of arranged second elements, and The second element overlaps one of the first latent image element, the second latent image element, and the background element that do not overlap, and the first latent image element includes the second element and the third element. When one of them overlaps or the second element does not overlap with the third element, the first latent image portion is formed, and one of the second element and the third element is formed on the second latent image element. The second latent image portion is formed by overlapping or the second element and the third element do not overlap, and one of the second element and the third element overlaps the background element or the second element And the third element do not overlap, a background portion common to the first latent image portion and the second latent image portion is formed, and the first latent image element, the second latent image element, and the background element Among them, the first latent image portion and the second latent image portion have different colors due to the color difference between the second element and the third element that overlap each other, A latent image pattern is formed by the first latent image portion and the plurality of second latent image portions. When the substrate is tilted and observed, the plurality of first latent image portions and the plurality of second latent images are caused by a color difference. The latent image portion is observed in a different color, and the latent image pattern is observed by one of the plurality of first latent image portions or the plurality of second latent image portions, and the latent image pattern background is determined by the other. Is observed.

  Further, the latent image pattern formed body of the present invention has a relationship between the first latent image element, the second latent image element, the background element, the second element, and the third element. One of the second element and the third element overlaps with the image element, and the remaining of the second latent image element does not overlap with the first latent image element among the second element and the third element Or the second element and the third element do not overlap the background element, or 3-2) one of the second element and the third element overlaps the first latent image element. The second element and the third element do not overlap with the second latent image element, and the remaining elements that do not overlap the first latent image element out of the second element and the third element are overlapped with the background element. The elements overlap, or 3-3) the second latent image element does not overlap the first latent image element, and the second latent image element does not overlap the second element and the third element. One of The remaining elements that do not overlap the second latent image element overlap the background element among the second element and the third element, and the first element depends on any one of 3-1) to 3-3) A latent image portion, a second latent image portion, and a background portion are formed.

  The latent image pattern formed body of the present invention is a latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and has a concave shape and / or a convex shape on at least a part of the substrate. A first pattern in which a plurality of first elements are arranged in a line and a second pattern and a first element in which a plurality of second elements having a different color from the first element are arranged in a line And a third pattern in which a plurality of third elements having different colors from the second element are arranged in a single line is formed. The first element is a first latent image element, a second latent image element. And the first latent image element, the second latent image element, and the background element are all different in phase and arranged at the same pitch, and the second element is the first latent image element, Of the second latent image element and the background element, two elements overlap with different area ratios, and the third element is a plurality of arranged second elements At least the remaining one of the first latent image element, the second latent image element, and the background element that do not overlap and the second element does not overlap, and the second latent image element has a second One or both of the element and the third element overlap to form a first latent image portion, and one or both of the second element and the third element overlap the second latent image element. As a result, a second latent image portion is formed, and one or both of the second element and the third element overlap the background element, so that they are common to the first latent image portion and the second latent image portion. A background portion is formed, and the first latent image element, the color difference between the second element and the third element overlapping the second latent image element, or the first latent image element and the second latent image element are overlapped Due to the difference in the area ratio of the second element, the first latent image portion and the second latent image portion have different colors or different densities, and a plurality of first latent image portions have different colors. When the substrate and the plurality of second latent image portions form a latent image pattern, and the substrate is tilted and observed, the plurality of first latent image portions and the plurality of second latent images are caused by the difference in color or the area ratio. The latent image portion is observed with a different color or density, and the pattern of the latent image pattern is observed by one of the plurality of first latent image portions or the plurality of second latent image portions. The background is observed.

  In the latent image pattern formed body of the present invention, the relationship between the first latent image element, the second latent image element, the background element, the second element, and the third element is 4-1. The second element overlaps the image element, the second latent image element overlaps the second element with an area ratio different from the area ratio of the second element overlapping the first latent image element, and the background element is third. Or 4-2) the third element overlaps the first latent image element, the second element overlaps the second latent image element, the background element, the second latent image element The second element overlaps at an area ratio different from the area ratio of the overlapping second element, or 4-3) the second element overlaps the first latent image element and the second latent image element The elements overlap, the background element overlaps the second element with an area ratio different from the area ratio of the second element overlapping the first latent image element, and any one of 4-1) to 4-3) Background of the characterized in that the portion the second background and latent image portion is formed.

  In the latent image pattern formed body of the present invention, the third element is included in one element out of the two elements of the first latent image element, the second latent image element, and the background element in which the second elements overlap. It is characterized by overlapping.

  The latent image pattern formed body of the present invention is a latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and has a concave shape and / or a convex shape on at least a part of the substrate. A first pattern in which a plurality of first elements are arranged in a line and a second pattern and a first element in which a plurality of second elements having a different color from the first element are arranged in a line And a third pattern formed by arranging a plurality of third elements of different colors from the second element in a line, the first element being a latent image element, a first background element and a second element being The latent image element, the first background element, and the second background element are all different in phase and are arranged at the same pitch, and the latent image element, the first background element, and the second background element A second element overlaps one element, a third element does not overlap a plurality of arranged second elements, and The second element overlaps one of the latent image element, the first background element, and the second background element, and one of the second element and the third element overlaps the first background element. The first background portion is formed by overlapping or the second element and the third element do not overlap, and one of the second element and the third element overlaps the second background element or the second element When the second element and the third element do not overlap, a second background portion is formed, and one of the second element and the third element overlaps the latent image element, or the second element and the third element overlap. When the elements do not overlap, a latent image portion common to the first background portion and the second background portion is formed, and overlaps two of the latent image element, the first background element, and the second background element. Due to the color difference between the second element and the third element, the first background portion and the second background portion have different colors, When the latent image pattern is formed by the background portion and the second background portion, and the base material is tilted and observed, the first background portion and the second background portion are observed in different colors due to the difference in color, and the first background portion is observed. A latent image pattern is observed by one of the background portion and the second background portion, and a background of the latent image pattern is observed by the other portion.

  Further, the latent image pattern formed body of the present invention has a relationship between the first background element, the second background element, the latent image element, the second element, and the third element as follows. One of the second element and the third element overlaps, and the first background element overlaps the remaining elements of the second element and the third element that do not overlap the latent image element, and the second element The second element and the third element do not overlap the background element, or 5-2) one of the second element and the third element overlaps the latent image element, and the first background element overlaps The second element and the third element do not overlap each other, and the second background element overlaps the remaining elements of the second element and the third element that do not overlap the latent image element, or 5-3 ) The second element and the third element do not overlap the latent image element, and one of the second element and the third element overlaps the first background element, and the second background The remaining elements that do not overlap with the first background element overlap with each other among the second element and the third element, and the first background part, 2 background portions and latent image portions are formed.

  The latent image pattern formed body of the present invention is a latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and has a concave shape and / or a convex shape on at least a part of the substrate. A first pattern in which a plurality of first elements are arranged in a line and a second pattern and a first element in which a plurality of second elements having a different color from the first element are arranged in a line And a third pattern formed by arranging a plurality of third elements of different colors from the second element in a line, the first element being a latent image element, a first background element and a second element being The latent image element, the first background element, and the second background element are all different in phase and are arranged at the same pitch. The second element is a latent image element, a first background element. Among the second background elements, two elements overlap each other with different area ratios, and the third element is a plurality of second elements arranged At least the remaining one of the latent image element, the first background element, and the second background element that do not overlap and the second element does not overlap, the first background element and the second element A first background portion is formed by overlapping one or both of the third elements, and a second background element is formed by overlapping one or both of the second element and the third element on the second background element. And a latent image portion common to the first background portion and the second background portion is formed by overlapping one or both of the second element and the third element on the latent image element. , The difference in color between the second element and the third element overlapping the first background element, the second background element, or the difference in the area ratio of the second element overlapping the first background element and the second background element The first background portion and the second background portion have different colors or different densities, and the first background portion and When the latent image pattern is formed by the background portion of 2 and the substrate is tilted and observed, the first background portion and the second background portion are observed in different colors or densities due to the difference in color or the area ratio, The latent image pattern is observed by one of the first background portion and the second background portion, and the background of the latent image pattern is observed by the other.

  Further, the latent image pattern formed body of the present invention has a relationship between the first background element, the second background element, the latent image element, the second element, and the third element as follows: 6-1) First background element The second element overlaps the second background element, the second element overlaps with the area ratio different from the area ratio of the second element overlapping the first background element, and the third element overlaps the latent image element. Overlap or 6-2) The third element overlaps the first background element, the second element overlaps the second background element, and the second element overlaps the latent image element and the second background element The second element overlaps with an area ratio different from the area ratio of the image element, or 6-3) the second element overlaps the first background element, the third element overlaps with the second background element, and the latent image element In addition, the second element overlaps with an area ratio different from the area ratio of the second element overlapping the first background element, and according to any one of 6-1) to 6-3), Background of the characterized in that the portion the second background and latent image portion is formed.

  Further, in the latent image pattern formed body of the present invention, the third element overlaps one element of the two elements of the latent image element, the first background element, and the second background element that overlap the second element. It is characterized by that.

  The latent image pattern formed body of the present invention is characterized in that the latent image element in the first background portion and the latent image element in the second background portion are images of different designs.

  In the latent image pattern formed body of the present invention, the first element, the second element, and the third element are composed of at least one of an image line or a pixel, or a combination thereof.

  When the latent image pattern formed body of the present invention is tilted and observed, a latent image formed by arrangement of latent images having different visibility is newly added in addition to a technique in which only one latent image is conventionally visible. By providing and using this for authenticity determination, it is possible to further prevent forgery of precious printed matter.

It is a figure which shows the latent image pattern by which the 1st pattern and 2nd pattern which comprise a latent image pattern formation body are observed. It is an enlarged view of a region where a first pattern and a second pattern are formed. It is a figure which shows a 1st pattern. It is sectional drawing of the 1st element which consists of convex shapes. It is sectional drawing of the 1st element which consists of concave shapes. It is sectional drawing of the 1st element which consists of a convex shape and a concave shape. It is a figure which shows the example of the 1st element comprised with a drawing line. It is a figure which shows the 1st element comprised by a pixel, a 2nd element, and a 3rd element. It is a figure which shows the example of the combination of the image line and pixel which comprise a 1st element. It is a figure which shows the structure of the 1st pattern with respect to the part by which the pattern of a latent image pattern is observed. It is a figure which shows the structure of the 1st pattern with respect to the part by which the background of the pattern of a latent image pattern is observed. It is a figure which shows typically arrangement | positioning of the 1st latent image part and 2nd latent image part with respect to a latent image pattern. It is a figure which shows the structure of the 1st pattern with respect to the boundary part in which the pattern and background of a latent image pattern are observed. It is a figure which shows the example of arrangement | positioning of a 1st latent image element, a 2nd latent image element, and a background element. It is a figure which shows the example of arrangement | positioning of a 1st latent image element, a 2nd latent image element, and a background element. It is a figure which shows the example which connected the element and formed the 1st pattern. It is a figure which shows a 2nd pattern. It is a figure which shows the observation part and non-observation part of the 1st element formed by convex shape. It is a figure which shows the observation part and non-observation part of the 1st element formed by convex shape. It is a figure which shows the example of arrangement | positioning of a 1st element and a 2nd element. It is a figure which shows the observation part and non-observation part of the 1st element formed in concave shape. It is a figure which shows the observation part and non-observation part of the 1st element formed in concave shape. It is a figure which shows the observation part and non-observation part of the 1st element formed by the combination of concave shape and convex shape. It is a figure which shows the latent image observed when it observes from the 1st arrangement | positioning and diagonally. It is a figure which shows the latent image observed when it observes from the 2nd arrangement | positioning and diagonally. It is a figure which shows the latent image observed when it observes from 3rd arrangement | positioning and diagonally. It is a figure which shows the latent image observed when it observes from the 4th arrangement | positioning and diagonally. It is a figure for demonstrating the range of a 1st pitch. It is a figure for demonstrating the range of a 1st pitch. It is a figure which shows a 3rd pattern. It is a figure which shows the state which the 3rd element does not overlap with a 2nd element, but overlaps with a 1st pattern. It is a figure which shows the latent image observed when it observes from the 5th arrangement | positioning and diagonally. It is a figure which shows the latent image observed when it observes from the 6th arrangement | positioning and diagonally. It is a figure which shows the example of the 6th arrangement | positioning with which a 2nd element and a 3rd element overlap with a background element. It is a figure which shows the latent image observed in which the density | concentration or color of a background part differs. It is a figure which shows the latent image pattern observed in which the density | concentration or color of a background part differs. It is a figure which shows the structure of the 1st pattern with respect to the boundary part in which the pattern and background of a latent image pattern are observed. It is a figure which shows the latent image observed when it observes from the arrangement | positioning of the 1st element in the latent image pattern formation body of Example 3, a 2nd element, and a 3rd element, and diagonally. In the latent image pattern formed body of Example 4, it is a figure which shows the arrangement | positioning of the 1st element, the 2nd element, and the 3rd element, and the latent image observed when it observes from diagonally.

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

  In the latent image pattern formed body (1) of the present invention, as shown in FIG. 1 (a), a plurality of concave or convex first elements (11) are arranged on at least a part of the substrate (2). The first pattern (10) is formed, and the second pattern (20) is formed by arranging a plurality of second elements (21) having a different color from the first element (11). When the area where the first pattern (10) and the second pattern (20) of the latent image pattern forming body (1) are observed from directly above, the second pattern shown in FIG. The pattern (20) is observed. Further, when the region where the first pattern (10) and the second pattern (20) of the latent image pattern forming body (1) are observed obliquely, the latent image pattern shown in FIG. (5) is observed. The state when the latent image pattern formed body (1) is observed obliquely will be described later. FIG. 1 (d) is a diagram schematically showing the pattern of the latent image pattern (5) shown in FIG. 1 (c). The latent image pattern (5) of the present embodiment includes a letter “A”. Consists of its background. FIG.1 (e) is the figure which expanded the part enclosed with a thick line frame among the parts in which the character of "A" of the latent image pattern (5) shown in FIG.1 (d) is observed, A plurality of first latent image portions (3) are observed, and in the present embodiment, the characters “NPB” are observed. Moreover, FIG.1 (f) is the figure which expanded the part enclosed with a broken-line frame among the parts in which the background of the character of "A" of the latent image pattern (5) shown in FIG.1 (d) is observed, In this portion, a plurality of second latent image portions (4) are observed. In this embodiment, the characters “JPN” are observed. The latent image pattern formed body (1) shown in FIG. 1 (a) has different densities of the first latent image portion (3) and the second latent image portion (4) that are visually recognized when observed from an oblique direction. The first latent image portion (3) is arranged so as to form the letter “A”, and the second latent image portion (4) having a different density from the first latent image portion (3) is “ The latent image pattern (5) shown in FIG. 1C is observed so as to form the background of the character “A”.

  The present embodiment is an example in which the latent image pattern (5) is composed of the letter “A”. However, in the present invention, the pattern of the latent image pattern (5) is limited to the letter “A”. Instead, numbers, symbols, figures and marks may be used. Further, the present embodiment is an example in which the design of the first latent image portion (3) is composed of characters “NPB”, but the design of the first latent image portion (4) is “NPB”. It is not limited to the characters “” and may be a number, symbol, figure, or mark. The same applies to the design of the second latent image portion (4).

  FIG. 2 is an enlarged view of a region where the first pattern (10) and the second pattern (20) shown in FIG. 1 are formed. Hereinafter, in the latent image pattern formed body (1) of the present invention, a detailed configuration of a region where the first pattern (10) and the second pattern (20) shown in FIG. 2 are formed will be described.

(First pattern)
As shown in FIG. 3, the first pattern (10) is formed on the base material (2) with the same color as the base material (2) or a concave shape of a different color from the base material (2), or the base material (2 ) Or a plurality of convex first elements (11) of a different color from the base material (2). In addition, the 1st element (11) which comprises a 1st pattern (10) is good also as a structure which combines the concave shape and convex shape which were mentioned above. In FIG. 3, the first element (11) is indicated by a black drawing line in order to indicate that the first element (11) is arranged in a plurality of lines, but the first element (11) However, when formed with the same color as the substrate (2), it cannot be visually recognized. The base material (2) used in the present invention must be a colored and opaque one. Temporarily, a colored pattern is printed on one surface of the base material (2), and this is used as the other side of the base material (2). When observing from one surface with reflected light, the pattern formed on one surface cannot be observed or is not so conspicuous. Such a substrate (2) is not particularly limited, and paper, film, plastic, or a composite material thereof can be used.

  4, 5 and 6 are cross-sectional views of the first element (11) taken along the line XX shown in FIG. 4A to 4C show an example in which the first element (11) is formed in a convex shape. 5A to 5C show an example in which the first element (11) is formed in a concave shape. FIG. 6 shows an example of a configuration in which the first element (11) is a combination of a concave shape and a convex shape. As an example of a method of forming a convex shape, it can be formed by printing with ink on the base material (2). In this case, the first element (11) is made of ink of the same color as the base material or a different color. It is formed. Moreover, as an example of the method of forming a concave shape, it can form by removing a part of base material (2) by laser processing, and in this case, the 1st element (11) is a base material (11). It is formed in the same color as 2). A method for forming the convex shape and the concave shape will be described later.

  The configuration of the convex shape and the concave shape is not limited to the shape shown in FIGS. 4, 5, and 6, and when observed from directly above, substantially the entire surface of the convex shape or the concave shape can be observed, When it is observed from an oblique direction, if it is a convex shape, the surface on the near side can be observed and the surface on the back side can be observed, and if it is a concave shape, the surface on the back side can be observed, Any shape may be used as long as the side surface cannot be observed. In addition, how the convex or concave surface looks when observed from an oblique direction will be described later.

  The first element (11) is composed of an image line. In the present invention, “image line” means a straight line, a broken line, and a wavy line, and FIG. 7A shows an example in which a plurality of first elements (11) composed of straight lines are arranged. FIG. 7B shows an example in which a plurality of first elements (11) constituted by a broken line are arranged. FIG. 7C shows an example in which a plurality of first elements (11) configured by wavy lines are arranged. FIG. 7 (d) shows an example in which a plurality of first elements (11) composed of an image line to which a design is given are arranged in the image line.

The width (W ₁ ) of the image line shown in FIG. 7 is not limited, but is preferably in the range of 20 μm to 1000 μm. Although the latent image can be observed even if the width (W ₁ ) of the image line is larger than 1000 μm, the first pattern (10) for forming the pattern of the latent image becomes large, and the precious printed matter is removed. This is not preferable because it is restricted by the design to be configured, for example, other printed designs. Further, when the line width (W ₁ ) is formed to be 20 μm or less, high alignment accuracy is required for the arrangement of the first element (11) and the second element (21), which will be described later, and the production is difficult. This is not preferable.

The first pitch (P ₁ ) shown in FIG. 7 will be described later.

  The height (h) of the first element shown in FIG. 4 and the depth (h ′) of the first element shown in FIG. 5 are formed in the range of 10 μm to 100 μm. Although the latent image can be observed even if the height (h) of the first element is less than 10 μm, it is not preferable because the range of viewpoints where the latent image can be observed becomes narrow. In addition, the depth (h ′) of the first element can be larger than 100 μm, but the thickness of the base material (2) is limited, and the problem of poor processing efficiency arises. It is not preferable.

  Although the 1st element (11) shown in FIG. 7 has shown the example comprised by an image line, in this invention, the 1st element (11) is observed similarly to the image line shown in FIG. If it is a range, as shown in FIG. 8, the 1st element (11) can also be comprised with a pixel. Next, the first element (11) composed of pixels will be described.

  In the present invention, the “pixel” means a character, number, symbol, figure, or mark having a predetermined shape, and the shape of the pixel is not particularly limited.

  FIG. 8A shows an example in which a plurality of first elements (11) composed of pixels of characters are arranged. FIG. 8B shows an example in which a plurality of first elements (11) composed of numeric pixels are arranged. FIG. 8C shows an example in which a plurality of first elements (11) composed of pixels by symbols are arranged. FIG. 8D shows an example in which a plurality of first elements (11) composed of pixels of a figure are arranged.

The range of the pixel height (W ′ ₁ ) shown in FIG. 8 is 20 to 1000 μm, which is the same as the width (W ₁ ) of the image line when the first element (11) is composed of the image line. . The reason for this is the same as that in the case where the first element (11) is constituted by an image line.

The first pitch (P ₁ ) shown in FIG. 8 is the same as that in the case where the first element (11) is constituted by an image line, and will be described later.

The pixel width (X ₁ ) shown in FIG. 8 is preferably formed to be larger than 20 μm. When the pixel width (X ₁ ) is formed to be 20 μm or less, it is not preferable because high alignment accuracy is required for the arrangement of the first element (11) and the second element (21), and the manufacturing becomes difficult. .

Note that the upper limit of the pixel width (X ₁ ) is not particularly limited as long as the first element (11) composed of pixels is within a range that can be observed as an image line, and depends on the type of pixel. Thus, the pixel width (X ₁ ) may be adjusted as appropriate. However, since the visibility of the first element (11) differs when pixels overlap, the pixel pitch (p ₁ ) shown in FIG. 7 is set to be at least larger than the pixel width (X ₁ ), and the pixels overlap. It is necessary to form so as not to become.

Also, if the pixel pitch (p ₁ ) is large, the adjacent pixels are spaced apart and are not observed as image lines, so the difference between the pixel pitch (p ₁ ) and the pixel width (X ₁ ) is It is preferable to make it smaller than 500 μm.

  By combining the image line configuration described above and the pixel configuration, one first element (11) may be formed as shown in FIG. Further, as shown in FIG. 9B, each of the plurality of arranged first elements (11) may have a configuration of an image line, a pixel, or a composite thereof.

  In the following description, an example in which the first element (11) is composed of a straight line is described.

  The first pattern (10) in which a plurality of the first elements (11) described above are arranged in a single line is a portion where the letter “A” of the latent image pattern (5) is observed. The configuration is different where the background of the letter “A” is observed. Hereinafter, the configuration will be described in order.

  First, the configuration of the first pattern (10) where the letter “A” of the latent image pattern (5) is observed will be described. FIG. 10A is a schematic diagram showing the arrangement of the latent image pattern (5) and the first pattern (10). FIG. 10B is an enlarged view of the first pattern (10) for the portion surrounded by the thick line frame in the portion where the character “A” of the latent image pattern (5) shown in FIG. 10A is observed. FIG. Up to now, the first pattern (10) has been described as having a plurality of first elements (11) arranged in a line as shown in FIG. 10 (a). 5), the details of the first pattern (10) with respect to the portion where the letter “A” is observed are as shown in the enlarged view of FIG. 10B. The element (11). In addition, as described above, when the portion of the latent image pattern (5) where the character “A” is observed is enlarged, the first latent image portion (3) of the character “NPB” is observed. As shown in FIG. 10C, in the portion where the letter “A” is observed, one of the first elements (11) arranged at two different phases is the first latent image portion (3). This corresponds to the character “NPB” and the other corresponds to the background of the character “NPB”.

  Hereinafter, the first element (11) corresponding to the design of the first latent image portion (3) (in this embodiment, the characters “NPB”) will be referred to as the first latent image element (11A). The first element (11) corresponding to the background of the pattern of the latent image portion (3) is referred to as a background element (11C). The design of the first latent image portion (3) is formed by a plurality of first latent image elements (11A) as shown in FIG. 10 (c).

  Next, the configuration of the first pattern (10) in the portion where the background of the letter “A” of the latent image pattern (5) is observed will be described.

  Fig.11 (a) is a schematic diagram which shows arrangement | positioning of a latent image pattern (5) and a 1st pattern (10). FIG. 11B shows a first pattern (10) for a portion surrounded by a thick line frame in the portion where the background of the character “A” of the latent image pattern (5) shown in FIG. FIG. In the present invention, the details of the first pattern (10) for the portion of the latent image pattern (5) where the background of the letter “A” is observed, as shown in the enlarged view of FIG. It is constituted by a first element (11) arranged in two different phases. Further, in the latent image pattern (5), when the portion where the background of the character “A” is observed is enlarged, the second latent image portion (4) of the character “JPN” is observed as described above. However, as shown in FIG. 11C, in the portion where the background of the letter “A” is observed, one of the first elements (11) arranged at two different phases is the second latent image. It corresponds to the character “JPN” in the part (4), and the other corresponds to the background of “JPN”.

  Hereinafter, the first element (11) corresponding to the design of the second latent image portion (4) (in this embodiment, “JPN”) is referred to as a second latent image element (11B), and the second The first element (11) corresponding to the background of the pattern of the latent image portion (4) is referred to as a background element (11C). The pattern of the second latent image portion (4) is formed by a plurality of second latent image elements (11B) as shown in FIG. 11 (c).

  As described above, in the present embodiment, as shown in FIG. 12, the first pattern (10) is the first latent image portion (with respect to the character “A” of the latent image pattern (5). 3) A plurality of symbols (characters “NPB” in the present embodiment) are arranged, and the second latent image portion (4) (“JPN” in the present embodiment) against the background of the characters “A”. A plurality of symbols are arranged. In addition, FIG. 12 is a figure which shows typically the relationship of the arrangement | positioning of the pattern of the 1st latent image part (3) and the pattern of the 2nd latent image part (4) with respect to a 1st pattern (10), Actually, the design of the first latent image portion (3) is formed by the first latent image element (11A), and the design of the second latent image portion (4) is the second latent image element (11A). 11B).

  Next, the first latent image element (11A), the background element (11C) corresponding to the pattern of the first latent image portion (3), the second latent image element (11B), and the second described above. The relationship of the background element (11C) corresponding to the pattern of the latent image portion (4) will be described.

  FIG. 13 (a) is a schematic diagram showing the arrangement of the latent image pattern (5) and the first pattern (10), and FIG. 13 (b) shows the latent line at the position of the thick line frame shown in FIG. 13 (a). It is the figure which expanded the 1st pattern (10) with respect to an image pattern (5). The position of the thick line frame shown in FIG. 13A is the portion of the latent image pattern (5) where the character “A” is observed (the first latent image portion composed of the characters “NPB”). (3)) and the position of the boundary of the portion where the background of the character “A” is observed (the second latent image portion (4) composed of the characters “JPN”). Also, the alternate long and short dash line shown in FIG. 13B is for indicating the boundary between the portion where the letter “A” is observed and the portion where the background of the letter “A” is observed. The first latent image element (11A) arranged on the line corresponds to the character “A” (the first latent image portion (3) composed of the characters “NPB”) of the latent image pattern (5). The second latent image element (11B) arranged on the right side of the alternate long and short dash line is a second latent image portion composed of characters “A” in the latent image pattern (5) (characters “JPN”). (4)).

  In the present invention, the background element (11C) corresponding to the design of the first latent image portion (3) and the background element (11C) corresponding to the design of the second latent image portion (4) are shown in FIG. Are arranged in the same phase. Further, the phase of the first latent image element (11A) is different from the phase of the second latent image element (11B), and the first latent image element (11A), the second latent image element (11B), and the background Elements (11C) are arranged in different phases. As described above, in the present invention, the first pattern (10) includes the first latent image element (11A), the second latent image element (11B), and the background element (11C) arranged in three different phases. Consists of

  As described above, in the present invention, the background to the design of the first latent image portion (3) and the background to the design of the second latent image portion (4) include the first latent image element (11A) and A background element (11C) common to the second latent image element (11B) is arranged corresponding to the background, and thereafter, the background is compared with the first latent image portion (3) and the second latent image portion (4). The portion that is the background of the pattern of the latent image expressed by the element (11C) will be described as “background portion (6)”. In the first pattern (10), the background for the designs of the first latent image portion (3) and the second latent image portion (4) is formed by a plurality of background elements (11C).

  The first latent image element (11A), the second latent image element (11B), and the background element (11C) are arranged in different phases, but each element surrounded by a dotted line shown in FIG. , All are arranged correspondingly. It should be noted that the respective elements are arranged correspondingly in FIG. 13B assuming that the first latent image element (11A) and the second latent image element (11B) are based on the background element (11C). The first latent image element (11A) and the second latent image element (11B) are arranged beyond the phase of the background element (11C) adjacent to the reference background element (11C). It is not done. Further, the first latent image element (11A), the second latent image element (11B), and the background element (11C) are arranged in different phases, and are arranged at the same pitch in the same adjacent elements. .

  Next, an example in which the first latent image element (11A), the second latent image element (11B), and the background element (11C) are arranged in different phases will be described.

  FIG. 14 is a schematic diagram for illustrating the arrangement relationship between the first latent image element (11A), the second latent image element (11B), and the background element (11C).

  FIG. 13B is an example in which the first latent image element (11A) and the second latent image element (11B) are arranged with different phases on the upper side with respect to the background element (11C). The first latent image element (11A), the second latent image element (11B), and the background element (11C) are not limited to the arrangement shown in FIG. 13B, and as shown in FIG. The phase of the first latent image element (11A) and the second latent image element (11B) may be different from each other on the lower side with respect to the background element (11C). In addition, one of the first latent image element (11A) and the second latent image element (11B) has a phase different from the background element (11C) and the other phase has a background element (11C). On the other hand, it may be different on the lower side. FIG. 14B shows an example in which the first latent image element (11A) is shifted in phase upward from the background element (11C), and the second latent image element (11B) is changed to the background element (11C). ) With respect to the lower side.

  In contrast to the arrangement shown in FIG. 13B, the first latent image element (11A) is arranged in a phase above the second latent image element (11B) as shown in FIG. 15 (a). In contrast to the arrangement shown in FIG. 14A, the first latent image element (11A) is located below the second latent image element (11B) as shown in FIG. 15B. It may be arranged in phase. The first latent image element (11A), the second latent image element (11B), and the background element (11C) are in any of the arrangements described above, and all have different phases.

Further, the first latent image element (11A), the background element (11C), and the second latent image element (11B) described so far may be connected as shown in FIG. The angles of the image lines for connecting the first latent image element (11A), the background element (11C), and the second latent image element (11B) are the first latent image element (11A) and the background element (11C). And 90 ° with respect to the second latent image element (11B). The angle of the line for connecting is preferably 30 ° to 90 °. However, since the visibility of the latent image is affected if the connecting angle is small, the design of the first latent image portion (3) and the design of the second latent image portion (4) and the first pitch (P ₁ ) Need to be adjusted accordingly.

(First element processing method)
As a method for forming the concave or convex first element (11), embossing, filling, laser processing, printing with ink, or the like can be used. When embossing is used, the first element (11) having a concave shape and the same color as the base material (2) is formed by pressing the convex plate surface against the base material (2). In the case of using a gap, the first element (11) having the concave shape and the same color as the base material (2) is formed by pressing the circular mesh roll at the stage of the process of producing paper with a circular paper machine. The In the case of using laser processing, the concave first element (11) is formed by removing a part of the base material (2) with laser light. At this time, when the output of the laser is increased, the base material (2) is burnt and discolored, and the concave first element (11) is formed in a color different from that of the base material (2). In addition, the amount of the base material (2) from which the base material (2) is removed at a time is reduced, but when the laser output is reduced so as not to scorch the base material (2), the concave first Elements (11) are formed in the same color as the substrate (2). When printing with ink is used, a convex first element (11) is formed depending on the thickness of the ink. When the first element (11) is formed by cleaning, laser processing, or ink, it is necessary to form the first element (11) before forming the second element (21). This is because the second element (21) is removed from the substrate (2) if the second element (21) is formed and then subjected to squeezing and laser processing. Further, if the convex first element (11) is formed with ink after forming the second element (21), the second element (21) is hidden and the latent image cannot be observed. .

(Second pattern)
As shown in FIG. 17, in the second pattern (20), a plurality of colored second elements (21) having a different color from the first elements (11) are arranged on the base material (2) in a line shape. Made up. When the first element (11) is formed in the same color as the substrate (2), the color of the second element (11) needs to be different from the color of the substrate (2), and the first element When (11) is formed in a color different from that of the substrate (2), the color of the second element (21) may be the same color as that of the substrate (2). An example of forming the second element (21) is a method of printing using ink, and details of the method of forming the second element (21) will be described later.

The second element (21) is composed of a line as in the first element (11) shown in FIG. 7, and is composed of pixels as in the first element (11) shown in FIG. 8, or is shown in FIG. Any of a composite configuration of an image line and a pixel may be used. Note that the image line of the second element (21) is described as the second pitch (P ₂ ) and the width of the image line (W ₂ ), and the pixel of the second element (21) Is described as a pixel height (W ′ ₂ ), a pixel width (X ₂ ), and a pixel pitch (p ₂ ).

Regarding the ranges of the second pitch (P ₂ ), the line width (W ₂ ), and the pixel height (W ′ ₂ ), the arrangement of the first element (11) and the second element (21) and Since it depends on the observed latent image (whether the latent image is observed at a constant density or is observed as a moire), it will be described later in the latent image observation principle described below. Since the range of the pixel height (W ′ ₂ ) is the same as the range of the image line width (W ₂ ), in the latent image observation principle described below, the pixel height (W ′ _2). ) Will be omitted. Here, the range of the pixel width (X ₂ ) and the pixel pitch (p ₂ ) will be described.

The pixel width (X ₂ ) shown in FIG. 8 is preferably larger than 20 μm. When the pixel width (X ₂ ) is formed to be 20 μm or less, it is not preferable because high alignment accuracy is required for the arrangement of the first element (11) and the second element (21), and the manufacturing becomes difficult. .

Note that the upper limit of the pixel width (X ₂ ) is not particularly limited as long as the second element (21) composed of pixels is a range that can be observed as an image line, and depends on the type of pixel. Thus, the pixel width (X ₂ ) may be adjusted as appropriate. However, since the visibility of the second element (21) differs when pixels overlap, the pixel pitch (p ₂ ) shown in FIG. 8 is at least larger than the pixel width (X ₂ ), and the pixels overlap. It is necessary to form so as not to become.

In addition, when the pixel pitch (p ₂ ) is large, the adjacent pixels are spaced apart and are not observed as an image line. Therefore, the difference between the pixel pitch (p ₂ ) and the pixel width (X ₂ ) It is preferable to make it smaller than 500 μm.

  In the following description, the second element (21) will be described as an example of a straight line.

  As a method for forming the second pattern (20), a known printing method such as offset printing, gravure printing, inkjet printing, or laser processing can be used. When the second pattern (20) is formed by printing, the second element (21) is made of ink. When the second pattern (20) is formed by laser processing, the second element (21) is second. The element (21) is formed by discoloring the base material (2) with a laser. In this case, it is necessary to adjust the output of the laser so as not to break the shape of the first element (11) formed on the base material (2).

(Arrangement of first pattern and second pattern)
Hereinafter, the arrangement of the first pattern (10) and the second pattern (20) and the observed latent image will be described. First, the observation principle of the latent image of the present invention will be described.

  First, the situation visually recognized when observing the base material (2) on which the convex first element (11) and the second element (21) are formed will be described with reference to FIGS. .

  FIG. 18A is a plan view showing an example of a state in which the first element (11) and the second element (21) having a semicircular convex shape shown in FIG. There is a part of it. The ZZ line indicates the position of the convex vertex, and in the present invention, the “convex vertex” is the highest of the first elements (11) formed in the convex shape. It is a part.

  The arrangement shown in FIG. 18A shows a state where the second element (21) overlaps half of the convex surface with the convex vertex as a boundary.

  FIG.18 (b) is a figure which shows sectional drawing in the XX line shown to Fig.18 (a). In FIG.18 (b), the observation point (L1) has shown the position of the viewpoint at the time of observing from right above a base material (2), and an observation point (L2) is with respect to a base material (2). , The position of the viewpoint when observed obliquely on the XX axis. In the following description, the state of observing from the position of the observation point (L2) is described as “observing from an oblique direction”. Moreover, in FIG.18 (b), the convex vertex shown by the ZZ line | wire of Fig.18 (a) is shown as code | symbol (Q). FIG. 18B also shows a state in which the second element (21) overlaps half of the convex first element (11).

  At this time, when observed from directly above the base material (2) like the observation point (L1), the second element (21) can be visually recognized, and the color of the second element (21) is observed. can do.

On the other hand, when the substrate (2) is observed obliquely like the observation point (L2), the convex surface (V ₁ ) on the near side is observed with the convex vertex (Q) as a boundary. However, the back surface (V ₂ ) becomes a convex blind spot and cannot be observed. Therefore, when observed obliquely, only the second element (21) overlapping the convex surface (V ₁ ) on the near side can be observed with the convex vertex (Q) as a boundary. Incidentally, when observing from an oblique, observable range of the surface of the convex (V ₁₎ is the first pitch (P ₁₎ and streaked width (W _1), there are some differences.

Further, the flat portion (V ₃ ) of the base material (2) where the convex first element (11) is not formed becomes a convex blind spot and cannot be basically observed. The portion (V ₃ ′) on the near side of the convex surface (V ₁ ) on the front side with the vertex (Q) of the shape as the boundary is the shape of the first element (11) and the first pitch (P ₁ ) and the width of the image line (W ₁ ).

As described above, the range of the observable surfaces of the convex first element (11) and the base material (2) when observed from an oblique direction is the first pitch (P ₁ ) and the width of the image line. Although there is a slight difference depending on (W ₁ ), in the following description, it is assumed that only the convex surface (V ₁ ) on the near side is observed with the convex vertex (Q) as a boundary. When the material (2) is observed obliquely, the convex surface (V ₁ ) on the near side with the convex vertex (Q) as a boundary is referred to as “observation part (V)” and the base material (2 ) Is observed obliquely, the convex surface (V ₂ ) on the back side and the flat portion (V ₃ ) of the substrate (2) with the convex vertex (Q) as a boundary. This will be described as “non-observation part (V ′)”. 18B is a cross-sectional view taken along line XX shown in FIG. 18A, and the observation part (V) and non-observation part (V ′) shown in FIG. Although it is on the X-ray, actually, as shown in FIG. 18A, in one first element (11), a line connecting the convex vertices (Q), that is, a ZZ line is The boundary is divided into an observation part (V) and a non-observation part (V ′).

  Subsequently, when the trapezoidal convex first element (11) shown in FIG. 4C is formed, the range of the observation part (V) and the non-observation part (V ′) is different. To do.

FIG. 19 shows a cross-sectional view of an arrangement in which the second element (21) overlaps the base material (2) on which the trapezoidal convex first element (11) shown in FIG. 4 (c) is formed. When the first element (11) is formed in a trapezoidal shape, the position of the convex vertex (Q) is the convex upper surface (V ₄ ). At this time, when the base material (2) is observed obliquely, the surface (V ₁ ) and the convex upper surface (V ₄ ) on the near side of the convex shape can be observed, and the surface on the far side of the convex shape. (V ₂₎ and the flat portion of the first element (11) is not formed substrate convex (2) (V ₃₎ can not be observed as blind spot convex.

In addition, the second element (21) formed on the convex upper surface (V ₄ ) is in contrast to the second element (21) formed on the front surface (V ₁ ) of the convex shape. Since the visibility is weak and the influence on the visibility of the pattern of the latent image is small, the latent image is actually formed by the second element (21) overlapping the front surface (V ₁ ) of the convex shape. Is done.

Therefore, when the first element (11) is formed in a trapezoidal shape, the range of the observation portion (V) of the first element (11) is the convex front side excluding the convex upper surface (V ₄ ). Becomes the surface (V ₁ ). Further, when the first element (11) is formed in a trapezoidal shape, the range of the non-observation part (V ′) is the surface on the back side of the convex shape (V ₂ ), the convex top surface (V ₄ ), and It becomes a flat portion (V ₃ ) of the substrate (2).

  Next, the arrangement of the first element (11) and the second element (21) different from the arrangement shown in FIG. 18 will be described. FIG. 20 is a diagram showing an example of the arrangement of the first element (11) and the second element (21), which is different from the arrangement shown in FIG.

In the arrangement shown in FIG. 20 (a), the second element (21) overlaps about half of the convex observation part (V), and the remaining base material (2) on which the first element (11) is not formed. It shows a state of overlapping the flat part (V ₃ ).

  FIG.20 (b) is a figure which shows sectional drawing in the XX line shown to Fig.20 (a). At this time, only the portion where the second element (21) overlaps the observation part (V) of the convex first element (11) can be observed. However, when the area of the second element (21) overlapping the observation part (V) of the convex first element (11) is small with respect to the arrangement shown in FIG. 18, the observation is made from the observation point (L2). Since the area of the second element (11) that is visually recognized becomes smaller, the color is observed at a lower density than the color observed in the arrangement shown in FIG. This is the same as the observation principle of halftone dot printing. In a halftone dot formed in a certain area, the higher the halftone dot area ratio, the higher the density, and the smaller the halftone dot area ratio, the lower the density. The second element (21) that is observed at a lower density as the area of the second element (21) that overlaps the convex observation part (V) is smaller and overlaps the convex observation part (V). The larger the area of 21), the higher the concentration is observed.

  The present invention uses the above observation principle, and the first latent image element (11A), the second latent image element (11B), and the background element (11C) of the first pattern (10) are different from each other. By arranging in phase, the elements of the first element (11) and the second element (21) overlap each other, and the first latent image part (3) and the second latent image part ( 4) is observed at different concentrations. A specific arrangement of the first element (11) and the second element (21) will be described later.

  The description so far is an example in which the first element (11) is formed in a convex shape. Subsequently, an example in which the first element (11) is formed in a concave shape will be described.

FIG. 21 is a cross-sectional view showing an example of a state in which the semicircular concave first element (11) and the second element (21) shown in FIG. In this case, as shown in FIG. 21, when the base material (2) is observed obliquely like the observation point (L2), the concave surface on the back side with the concave bottom point (R) as a boundary. (V ₅ ) can be observed, and the concave surface (V ₆ ) on the near side cannot be observed because it becomes a blind spot. In the present invention, the “concave bottom (R)” is the lowest portion of the first element (11) formed in a concave shape.

Further, when the base material (2) is observed from an oblique direction, a flat portion (V ₇ ) of the base material (2) where the first element (11) is not formed can be observed. The second element (21) formed on the flat portion (V ₇ ) of the base material (2) where (11) is not formed has a concave shape on the back side with the concave bottom point (R) as a boundary. Since the visibility of the second element (21) formed on the surface (V ₅ ) is weak and the influence on the visibility of the pattern of the latent image is small, the bottom point (R ) As a boundary, a latent image is formed by the second element (21) overlapping the concave surface (V ₅ ) on the back side.

Therefore, when the first element (11) is formed in a concave shape, the concave surface (V ₅ ) on the back side is defined as “observation part (V ) ”, When the base material (2) is observed obliquely, the concave surface (V ₆ ) on the front side and the flat part of the base material (2) with the concave bottom point (R) as a boundary (V ₇ ) will be referred to as “non-observation part (V ′)” and will be described below. FIG. 21 is a cross-sectional view of the first element (11) at a predetermined position, and the observation part (V) and the non-observation part (V ′) shown in FIG. Actually, one first element (11) is divided into an observation part (V) and a non-observation part (V ′) with a line connecting the concave bottom points (R) as a boundary. Even when the first element (11) is formed in a concave shape, the range of the observation part (V) and the non-observation part (V ′) is the first pitch (P ₁ ) and the width of the image line. There is a slight difference depending on (W ₁ ). Thus, even when the first element (11) is formed in a concave shape, the observation part (V) and the non-observation part (V ′) can be provided, and the first latent image element (11A), By observing the second latent image element (11B) and the background element (11C) in the overlapping manner of the observation part (V) and the second element (21), a latent image can be formed.

  Subsequently, when the trapezoidal concave first element (11) shown in FIG. 5C is formed, the range of the observation part (V) and the non-observation part (V ′) is different. To do.

FIG. 22 shows a sectional view of the arrangement in which the second element (21) overlaps the base material (2) on which the trapezoidal concave first element (11) shown in FIG. 5 (c) is formed. When the first element (11) is formed in a trapezoidal shape, the position of the concave bottom point (R) is the concave bottom surface (V ₈ ). At this time, when observing substrate (2) from an oblique, concave inner side and becomes the surface (V ₅₎ and the flat portion of the substrate (V ₇₎ can be observed, a concave front side The resulting surface (V ₆ ) and the concave bottom surface (V ₈ ) cannot be observed as a blind spot of the base material (2). The second element (21) which is formed on the flat portion of the substrate (V ₇₎ is for the second element which is formed into a concave shape on the rear side and comprising a surface (V ₅₎ (21) In fact, the visibility of the latent image is weak and the influence on the visibility of the pattern of the latent image is small. Therefore, the latent image is actually caused by the second element (21) overlapping the concave surface (V ₅ ). Is formed.

Therefore, when the first element (11) is formed in a trapezoidal shape, the range of the observation part (V) of the first element (11) excludes the flat part (V ₇ ) of the substrate (2), It becomes the surface (V ₅ ) which becomes the concave back side. Further, when the first element (11) is formed in a trapezoidal shape, the range of the non-observation part (V ′) of the first element (11) is the surface (V ₆ ), the concave surface on the near side of the concave shape. It becomes the lower surface (V ₈ ) of the shape and the flat portion (V ₇ ) of the substrate (2).

Then, the 1st element (11) of a structure which combines a concave shape and a convex shape is demonstrated. FIG. 23 shows an example of a state in which the second element (21) overlaps the first element (11) formed by combining the semicircular concave shape and convex shape shown in FIG. 6 (a). It is sectional drawing. In this case, as described in the case where the first element (11) is formed in a semicircular convex shape, the convex surface (V ₁ ) on the near side with the convex vertex (Q) as a boundary. Can be observed, but the back surface (V ₂ ) cannot be observed because it is a convex blind spot.

Further, as described in the case where the first element (11) is formed by concave semicircular, concave lower point (R) as a boundary, concave surface which is a back side (V ₅₎ Can be observed, but the concave surface (V ₆ ) on the near side cannot be observed because it becomes a blind spot of the substrate (1).

Further, the flat portion (V ₉ ) of the base material on which the concave or convex first element (11) is not formed becomes a convex blind spot and cannot be basically observed. The near-side portion (V ₉ ′) may be observed depending on the shape of the first element (11), the first pitch (P ₁ ), and the width of the image line (W ₁ ). However, as described above, the second element (21) formed on the flat portion of the substrate (1) has low visibility, and has little influence on the visibility of the latent image.

Therefore, when the first element (11) is formed of a combination of a concave shape and a convex shape, the concave surface (V ₁ ) on the near side and the concave shape are formed with the vertex (Q) of the convex shape as a boundary. With the bottom point (R) as a boundary, the concave surface (V ₅ ) on the back side becomes the observation part (V). The range of the observation part (V) and the non-observation part (V ′) is slightly different depending on the shape of the first element (11), the first pitch (P ₁ ), and the width of the image line (W ₁ ). There is a difference.

  The latent image observation principle and the range of the observation part (V) and the non-observation part (V ′) of the present invention have been described above. In the following description, the first element (11) is shown in FIG. A description will be given using an example of a semicircular convex shape.

Next, the specific arrangement of the first element (11) and the second element (21) and the observed pattern will be described. The arrangement of the first pattern (10) and the second pattern (20) in which the first pitch (P ₁ ) and the second pitch (P ₂ ) are formed at the same pitch will be described. The first element (11) will be described with an example in which the first element (11) is formed in the same color as the base material (2). Moreover, when observed from directly above like the observation point (L1), since the second element (21) can be observed in any case, the description is omitted, and the base material (2) is omitted. The pattern of the latent image observed when observed from an oblique direction will be described. Moreover, in the figure which shows arrangement | positioning of the 1st element (11) and 2nd element (21) which are demonstrated hereafter, an observation part (V) is made into the lower side from the half of each element shown to drawing, and a non-observation part ( V ′) is from half to upper side of each element shown in the drawing.

  In the present invention, the second element (21) has a different area ratio to at least two of the first latent image element (11A), the second latent image element (11B), and the background element (11C). Need to overlap. In the case where the first pattern (10) and the second pattern (20) are formed, there are four combinations in such an arrangement. In this description, the first arrangement to the fourth arrangement are as follows. explain.

  In the first arrangement, the second element (21) has at least a part of the observation part (V) of the first latent image element (11A) and at least a part of the observation part (V) of the background element (11C). Is arranged so as not to overlap the second latent image element (11B). In this case, the area ratio of the second element (21) overlapping the observation part (V) of the first latent image element (11A) and the second element (overlapping the observation part (V) of the background element (11C) ( 21) are arranged with different area ratios. An example of this arrangement is shown in FIG.

  FIG. 24A shows that the second element (21) overlaps the whole of the first latent image element (11A) and a part of the observation part (V) of the background element (11C). The state which does not overlap with an element (11B) is shown. Further, the area ratio of the second element (21) that overlaps the observation part (V) of the first latent image element (11A) is equal to the second element (21 that overlaps the observation part (V) of the background element (11C). ) Is larger than the area ratio.

Here, the range of the line width (W ₂ ) of the second element (21) will be described. In the first arrangement shown in FIG. 24A, the line width (W ₂ ) of the second element (21) needs to be larger than at least 10 μm. This is because if the width (W ₂ ) of the image line of the second element (21) is smaller than 10 μm, the overlapping area between the first element (11) and the second element (21) is small, so that the latent image is visually recognized. This is because the sex is lowered. In addition, when reducing the line width (W ₂ ) of the second element (21), it is also necessary to reduce the phase difference between the elements.

Further, the upper limit of the line width (W ₂ ) of the second element (21) may be adjusted as appropriate according to the arrangement of each element shown in FIGS. 14 and 15 to be the first arrangement. The area ratios of the second element (21) overlapping the observation part (V) of the first latent image element (11A) and the second element (21) overlapping the observation part (V) of the background element (11C) are different. In addition, it is necessary not to overlap the observation portion (V) of the second latent image element (11B).

  When the region where the first pattern (10) and the second pattern (20) of the latent image pattern forming body (1) having the first arrangement shown in FIG. The latent image pattern (5) shown in (b) is observed. The character “A” of the latent image pattern (5) observed at this time is visually recognized at a high density of the color of the second element (21), and the background of the character “A” is the second element ( 21) is visually recognized at a low density. The reason why the latent image pattern (5) is thus observed is as follows.

  Of the latent image pattern (5), the first pattern (10) for the portion where the letter “A” is observed includes a first latent image element (11A) and a background element (2) arranged in two different phases. 11C), and in the first arrangement, the second element (21) overlaps the observation part (V) of the first latent image element (11A), which is shown in FIG. A first latent image portion (3) that is observed in the color of the second element (21) is formed. In addition, when the second element (21) overlaps the observation part (V) of the background element (11C), the background part (6) observed in the color of the second element (21) shown in FIG. ) Is formed. At this time, the character “NPB” indicates that the area ratio of the second element (21) overlapping the observation part (V) of the first latent image element (11A) corresponding to the character “NPB” is “NPB”. Since the area ratio of the second element (21) that is larger than the area ratio of the second element (21) that overlaps the background element (11C) corresponding to the background of the character of the character, It is observed at a higher density than the background of the letters “NPB”.

  The first pattern (10) for the portion of the latent image pattern (5) where the background of the letter “A” is observed is the second latent image element (11B) arranged in two different phases. And the background element (11C). In the first arrangement, the second element (21) overlaps the observation part (V) of the background element (11C), and the result is shown in FIG. A background (6) is formed which is observed in the color of the second element (21). Further, the second element (21) does not overlap the observation part (V) of the second latent image element (11B), but the second element (21) is not overlapped with the observation part (V) of the background element (11C). ) Overlap, the second latent image portion (4) observed as outlined in FIG. 24 (d) is formed. The background element (11C) corresponding to the background of the design of the first latent image portion (3) and the background element (11C) corresponding to the background of the design of the second latent image portion (4) are in the same phase. Since the area ratio of the second element (21) that is located and overlaps the observation part (V) of the two background elements (11C) is the same, the background part (6) shown in FIG. The background (6) shown in 24 (d) is observed at the same density.

  From the above description, in the first arrangement shown in FIG. 24A, the background portion (6) serving as the background for the first latent image portion (3) and the second latent image portion (4). ) Is observed in the same color, the first latent image portion (3) observed at a high density is arranged on the letter “A” of the latent image pattern (5), so that the first latent image portion (3) is observed. The density of the image portion (3) is emphasized, and the color of the second element (21) is observed at a high density as the whole character “A”. In addition, in the background of the character “A”, the second latent image portion (4) observed in outline is arranged, so that the density of the entire background of the character “A” is lowered, and the second The color of element (21) is observed at a low density. In the first arrangement, the area ratio of the second element (21) that overlaps the background element (11C) is set to the second element (21 that overlaps the observation part (V) of the first latent image element (11A). ) Is larger than the area ratio (not shown), while the background portion (6) of each other is observed at a high density, the letter “A” in the latent image pattern (5) is observed at a low density, The background of the letter “A” is observed at a lower density.

  In the technique of Patent Document 1, when a printed surface is tilted and observed, only a constant density latent image is observed. However, the latent image pattern formed body (1) of the present invention is visually recognized at different densities. The first latent image portion (3) and the second latent image portion (4) are provided, and the first latent image portion (3) and the second latent image portion (4) are formed into a latent image pattern (5). Are arranged so as to constitute the letter “A” and its background, the first latent image portion (3) and the second latent image portion (3) are not only observed, but also the first The pattern shown by the arrangement of the latent image portion (3) and the second latent image portion (4) can be observed as a latent image pattern (5). And the latent image pattern formed body (1) of the present invention can observe the latent image described above, and by using it for authenticity discrimination, it is possible to prevent forgery of precious printed matter.

Note that the first arrangement shown in FIG. 24A is an example in which the first pitch (P ₁ ) and the second pitch (P ₂ ) are formed at the same pitch. The second pitch (P ₂ ) of the element (21) is formed to have substantially the same size as the first pitch (P ₁ ). The substantially same size is a range of 4/5 to 6/5 with respect to the first pitch (P ₁ ). Preferably, the pitch is the same. As shown in FIG. 24A, when the first pitch (P ₁ ) and the second pitch (P ₂ ) are the same, the first element (11) and the second element (21) are This is because they always overlap each other at a constant interval, so that it is easy to visually recognize the pattern of the latent image and its background by the first latent image element (11A), the second latent image element (11B), and the background element (11C). If the second pitch (P ₂ ) is different within the above-described range, the overlapping state of the first element (11) and the second element (21) gradually changes. An image pattern is observed.

  In the second arrangement, the second element (21) includes at least a part of the observation part (V) of the first latent image element (11A) and the observation part (V) of the second latent image element (11B). Is arranged so as not to overlap the observation part (V) of the background element (11C). In this case, the area ratio of the second element (21) overlapping the observation part (V) of the first latent image element (11A) and the first area overlapping the observation part (V) of the second latent image element (11B). The two elements (21) are arranged with different area ratios. An example of this arrangement is shown in FIG.

  FIG. 25 (a) shows that the second element (21) overlaps a part of the observation part (V) of the first latent image element (11A) and the entire second latent image element (11B). The state which does not overlap with an element (11C) is shown. In addition, the area ratio of the second element (21) that overlaps the observation part (V) of the first latent image element (11A) is the second that overlaps the observation part (V) of the second latent image element (11B). The state is smaller than the area ratio of the element (21).

In the second arrangement shown in FIG. 25A, the line width (W ₂ ) of the second element (21) needs to be larger than at least 10 μm. The reason for this is as described in the first arrangement. Further, the upper limit of the line width (W ₂ ) of the second element (21) may be appropriately adjusted according to the arrangement of each element shown in FIGS. 14 and 15 to be the second arrangement. Of the second element (21) overlapping the observation part (V) of the first latent image element (11A) and the second element (21) overlapping the observation part (V) of the second latent image element (11B). It is necessary that the area ratios are different and do not overlap the observation part (V) of the background element (11C).

In addition, the second arrangement shown in FIG. 25A is an example in which the first pitch (P ₁ ) and the second pitch (P ₂ ) are formed at the same pitch. As described above, the second pitch (P ₂ ) may be formed within the same range as the first pitch (P ₁ ).

  When the region where the first pattern (10) and the second pattern (20) of the latent image pattern forming body (1) having the second arrangement shown in FIG. The latent image pattern (5) shown in (b) is observed. The character “A” of the latent image pattern (5) observed at this time is visually recognized at a low density of the color of the second element (21), and the background of the character “A” is the second element ( 21) is visually recognized at a high density. The reason why the latent image pattern (5) is thus observed is as follows.

  In the first pattern (10) with respect to the portion of the latent image pattern (5) where the letter “A” is observed, the observation portion (V) of the first latent image element (11A) is in the second arrangement. ) Overlaps with the second element (21) to form the first latent image portion (3) observed in the color of the second element (21) shown in FIG. 25 (c). In addition, the second element (21) does not overlap the background element (11C), but the second element (21) overlaps the observation part (V) of the first latent image element (11A). A background portion (6) observed as outlined in FIG. 25 (c) is formed.

  In the first pattern (10) for the portion of the latent image pattern (5) where the background of the letter “A” is observed, the observation portion (V) of the second latent image element (11B) is used. By overlapping the second element (21), a second latent image portion (4) observed with the color of the second element (21) shown in FIG. 25 (d) is formed. At this time, the character “JPN” indicates that the area ratio of the second element (21) overlapping the observation portion (V) of the second latent image element (11B) corresponding to the character “JPN” is “NPB”. The area ratio of the second element (21) that is larger than the area ratio of the second element (21) that overlaps the first latent image element (11A) corresponding to the character of Therefore, it is observed at a higher density than the letters “NPB”. In addition, the second element (21) does not overlap the background element (11C), but the second element (21) overlaps the observation part (V) of the second latent image element (11B). A background portion (6) observed as outlined in FIG. 25 (d) is formed.

  From the above description, in the second arrangement shown in FIG. 25A, the background portion (6) serving as the background for the first latent image portion (3) and the second latent image portion (4). ) Is observed in white, the second latent image portion (4) observed at a high density is placed on the background of the letter “A” in the latent image pattern (5), thereby allowing “A As for the entire character background, the color of the second element (21) is observed at a high density. In addition, the first latent image portion (3) observed at a lower density than the second latent image portion (4) is arranged at the letter “A” of the latent image pattern (5). As a whole of the letter “A”, the color of the second element (21) is observed at a low density. Note that, in the second arrangement, the area ratio of the second element (21) that overlaps the observation part (V) of the first latent image element (11A) is expressed by the observation part of the second latent image element (11B) ( When the area ratio of the second element (21) overlapped with V) is larger than the area ratio (not shown), the letter “A” constituted by the first latent image portion (3) is observed at a high density, The background of the letter “A” composed of two latent image portions (4) is observed at a low density.

  In the third arrangement, the second element (21) includes at least part of the observation part (V) of the second latent image element (11B) and at least part of the observation part (V) of the background element (11C). Is arranged so as not to overlap the observation portion (V) of the first latent image element (11A). In this case, the area ratio of the second element (21) overlapping the observation part (V) of the second latent image element (11B) and the second element (overlapping the observation part (V) of the background element (11C) ( 21) are arranged with different area ratios. An example of this arrangement is shown in FIG.

  FIG. 26 (a) shows that the second element (21) is not the whole of the observation part (V) of the second latent image element (11B) and part of the observation part (V) of the background element (11C). It shows a state where it overlaps the entire observation part (V ′) and does not overlap the first latent image element (11A). Further, the area ratio of the second element (21) that overlaps the observation part (V) of the background element (11C) is equal to the second element (21 that overlaps the observation part (V) of the second latent image element (11B). ) Is smaller than the area ratio.

In the third arrangement shown in FIG. 26A, the line width (W ₂ ) of the second element (21) needs to be larger than at least 10 μm. The reason for this is as described in the first arrangement. Further, the upper limit of the line width (W ₂ ) of the second element (21) may be appropriately adjusted according to the arrangement of each element shown in FIGS. 14 and 15 to be the third arrangement. The area ratios of the second element (21) overlapping the observation part (V) of the second latent image element (11B) and the second element (21) overlapping the observation part (V) of the background element (11C) are different. In addition, it is necessary not to overlap the observation portion (V) of the first latent image element (11A).

In addition, the third arrangement shown in FIG. 26A is an example in which the first pitch (P ₁ ) and the second pitch (P ₂ ) are formed at the same pitch. As described above, the second pitch (P ₂ ) may be formed within the same range as the first pitch (P ₁ ).

  When the region where the first pattern (10) and the second pattern (20) of the latent image pattern forming body (1) having the third arrangement shown in FIG. The latent image pattern (5) shown in (b) is observed. The character “A” of the latent image pattern (5) observed at this time is visually recognized at a low density of the color of the second element (21), and the background of the character “A” is the second element ( 21) is visually recognized at a high density. The reason why the latent image pattern (5) is thus observed is as follows.

  In the first pattern (10) corresponding to the portion where the letter “A” is observed in the latent image pattern (5), the second arrangement is made in the observation portion (V) of the background element (11C) in the third arrangement. When the element (21) overlaps, the background portion (6) observed in the color of the second element (21) shown in FIG. 26 (c) is formed. In addition, the second element (21) does not overlap the observation part (V) of the first latent image element (11A), but the second element (21) does not overlap the observation part (V) of the background element (11C). ) Overlap, the first latent image portion (3) observed as outlined in FIG. 26C is formed.

  In the first pattern (10) for the portion of the latent image pattern (5) where the background of the letter “A” is observed, the observation portion (V) of the second latent image element (11B) is used. By overlapping the second element (21), a second latent image portion (4) observed with the color of the second element (21) shown in FIG. 26 (d) is formed. In addition, when the second element (21) overlaps the observation part (V) of the background element (11C), the background part (6) observed in the color of the second element (21) shown in FIG. ) Is formed. At this time, the character “JPN” indicates that the area ratio of the second element (21) overlapping the observation part (V) of the second latent image element (11B) corresponding to the character “JPN” is “JPN”. Since the area ratio of the second element (21) that is larger than the area ratio of the second element (21) that overlaps the background element (11C) corresponding to the background of the character of the character, It is observed at a higher density than the background of the characters “JPN”. The background element (11C) corresponding to the background of the design of the first latent image portion (3) and the background element (11C) corresponding to the background of the design of the second latent image portion (4) are in the same phase. Since the area ratio of the second element (21) that is located and overlaps the observation part (V) of the two background elements (11C) is the same, the background part (6) shown in FIG. The background part (6) shown in 26 (d) is observed at the same density.

  From the above description, in the third arrangement shown in FIG. 26A, the background portion (6) serving as the background of the first latent image portion (3) and the second latent image portion (4). ) Is observed in the same color, the letter “A” in the latent image pattern (5) indicates that the first latent image portion (3) observed in white is “A” in the latent image pattern (5). The density of the entire character “A” is reduced, and the color of the second element (21) is observed at a low density. In addition, the second latent image portion (4) observed at a high density is arranged in the background of the character “A” of the latent image pattern (5), so that the second latent image portion (4) The density is emphasized, and the color of the second element (21) is observed at a high density as the entire background of the letter “A”. In the third arrangement, the area ratio of the second element (21) that overlaps the background element (11C) is set to the second element (21 that overlaps the observation part (V) of the second latent image element (11B). ) Is larger than the area ratio (not shown), while the background (6) of each other is observed at a high density, the background of the letter “A” in the latent image pattern (5) is observed at a low density. And the letter “A” is observed at even lower concentrations.

  In the fourth arrangement, the second element (21) is at least part of the observation part (V) of the first latent image element (11A), and the observation part (V) of the second latent image element (11B). And at least a part of the observation part (V) of the background element (11C). In this case, the area ratio of the second element (21) overlapping the observation part (V) of the first latent image element (11A), and the second ratio overlapping the observation part (V) of the second latent image element (11B). The area ratio of the element (21) and the area ratio of the second element (21) overlapping the observation part (V) of the background element (11C) are arranged differently. An example of this arrangement is shown in FIG.

  FIG. 27A shows that the second element (21) is a part of the observation part (V) of the first latent image element (11A), the entire second latent image element (11B), and the background element ( 11C) shows a state in which a part of the observation part (V) and the whole non-observation part (V ′) overlap. In addition, the area ratio of the second element (21) that overlaps the observation part (V) of the background element (11C) is equal to the second element (21 that overlaps the observation part (V) of the first latent image element (11A). ) Is smaller than the area ratio.

In the fourth arrangement shown in FIG. 27A, the line width (W ₂ ) of the second element (21) needs to be at least larger than 10 μm. The reason for this is as described in the first arrangement. In addition, the upper limit of the width (W ₂ ) of the image line of the second element (21) is formed in a size smaller than 9/10 with respect to the first pitch (P ₁ ). This is because, when the width (W ₂ ) of the image line of the second element (21) is larger than 9/10 with respect to the first pitch (P ₁ ), the elements (11) arranged in different phases. The second element (21) overlaps the entirety of the image, and a contrast is obtained between the pattern of the latent image by the first latent image element (11A), the second latent image element (11B) and the background element (11C) and its background. This is because the latent image cannot be observed.

The fourth arrangement shown in FIG. 27A is an example in which the first pitch (P ₁ ) and the second pitch (P ₂ ) are formed at the same pitch. The second pitch (P ₂ ) may be formed in the same range as the first pitch (P ₁ ) described above.

  When the region where the first pattern (10) and the second pattern (20) of the fourth arrangement of the latent image pattern forming body (1) shown in FIG. The latent image pattern (5) shown in (b) is observed. The character “A” of the latent image pattern (5) observed at this time is visually recognized at a low density of the color of the second element (21), and the background of the character “A” is the second element ( 21) is visually recognized at a high density. The reason why the latent image pattern (5) is thus observed is as follows.

  In the first pattern (10) for the portion where the letter “A” is observed in the latent image pattern (5), in the fourth arrangement, the observation portion (V of the first latent image element (11A)) ) Overlaps with the second element (21) to form the first latent image portion (3) observed in the color of the second element (21) shown in FIG. In addition, when the second element (21) overlaps the observation part (V) of the background element (11C), the background part (6) observed in the color of the second element (21) shown in FIG. ) Is formed. At this time, the character “NPB” indicates that the area ratio of the second element (21) overlapping the observation part (V) of the first latent image element (11A) corresponding to the character “NPB” is “NPB”. Since the area ratio of the second element (21) that is larger than the area ratio of the second element (21) that overlaps the background element (11C) corresponding to the background of the character of the character, It is observed at a higher density than the background of the letters “NPB”.

  In the first pattern (10) for the portion of the latent image pattern (5) where the background of the letter “A” is observed, the observation portion (V) of the second latent image element (11B) is used. By overlapping the second element (21), a second latent image portion (4) observed in the color of the second element (21) shown in FIG. 27 (d) is formed. In addition, when the second element (21) overlaps the observation part (V) of the background element (11C), the background part (6) observed in the color of the second element (21) shown in FIG. ) Is formed. At this time, the character “JPN” indicates that the area ratio of the second element (21) overlapping the observation part (V) of the second latent image element (11B) corresponding to the character “JPN” is “JPN”. Since the area ratio of the second element (21) that is larger than the area ratio of the second element (21) that overlaps the background element (11C) corresponding to the background of the character of the character, It is observed at a higher density than the background of the characters “JPN”. The background element (11C) corresponding to the first latent image portion (3) and the background element (11C) corresponding to the second latent image portion (4) are located at the same phase, and two backgrounds Since the area ratio of the second element (21) overlapping the observation part (V) of the element (11C) is the same, the background part (6) shown in FIG. 27 (c) and the background part shown in FIG. 27 (d) (6) is observed in the same color. Further, the second element (21) overlaps a part of the observation part (V) of the first latent image element (11A), whereas the observation part (V) of the second latent image element (11B). Since the second element (21) overlaps the entirety of, the character “JPN” as the second latent image portion (4) is higher than the character “NPB” as the first latent image portion (3). Observed in concentration.

  From the above description, in the fourth arrangement shown in FIG. 27A, the background portion (6) serving as the background for the first latent image portion (3) and the second latent image portion (4). ) Is observed in the same color, the second latent image portion (4) observed at a high density is arranged on the background of the letter “A” in the latent image pattern (5), so that the second The density of the latent image portion (4) is emphasized, and the color of the second element (21) is observed at a high density as the entire background of the letter “A”. In the character “A”, the first latent image portion (3) observed at a higher density than the background portion (6) is arranged in the character “A” of the latent image pattern (5). The density of the first latent image portion (3) is emphasized and observed. However, since the density of the first latent image portion (3) is lower than the density of the second latent image portion (4), the letter “A” has a lower density than the background of the letter “A”. Observed. Note that, in the fourth arrangement, the area of the second element (21) overlapping the observation part (V) of the first latent image element (11A), the second latent image element (11B), and the background element (11C). The magnitude relationship of the rates is not limited to the arrangement example shown in FIG. 27A, and the area ratio of the second element (21) overlapping the observation part (V) of the first latent image element (11A) is the largest. The area ratio of the second element (21) that overlaps the observation part (V) of the background element (11C) may be the largest (not shown).

  The above is the arrangement of the latent image pattern formed body (1) formed by forming the first pattern (10) and the second pattern (20) and the observed latent image. In order to make all the latent images corresponding to the first latent image element (11A) and the second latent image element (11B) to appear appear, an area for forming the second pattern (20) is defined as the first pattern (10 ) And the same size as the region where the first pattern (10) is formed or larger than the region where the first pattern (10) is formed.

  In the present embodiment, the first latent image portion (3) is arranged on the character “A” of the latent image pattern (5), and the first background is displayed on the background of the character “A” of the latent image pattern (5). Although the configuration in which the two latent image portions (4) are arranged has been described, a plurality of first latent image portions (3) are arranged on the background of the letter “A” of the latent image pattern (5), and “A” A plurality of second latent image portions (4) may be arranged on the character (not shown). This is because when the first pattern (10) and the second pattern (20) overlap in the first to fourth arrangements described above, the first latent image portion (3) and the second latent image. This is because the visibility of the portion (4) and the background portion (6) is different, so that it is possible to observe the latent image pattern (5) having different visibility on the letter “A” and its background. is there.

Next, the first pitch (P ₁ ) of the first element (11) for observing the latent image pattern (5) according to the observation principle described above will be described.

The first pitch (P ₁ ) shown in FIG. 7 is not particularly limited because it can be the first to fourth arrangements as long as the elements can be arranged in different phases. but not shall preferably good is formed by 2 to 3 times the width of the image line (W _1). Here, the reason why the first pitch (P ₁ ) is preferably formed to be 2 to 3 times the width (W ₁ ) of the image line will be described.

First, the reason why the first pitch (P ₁ ) is preferably larger than twice the width (W ₁ ) of the image line will be described. This is because it is necessary to make the first pitch (P ₁ ) larger than twice the width (W ₁ ) of the image line in order to arrange the observation portions (V) of each element so as not to overlap with each other in the same phase. In this case, the contrast of the second element (21) overlapping the first latent image element (11A), the second latent image element (11B), and the background element (11C) is most obtained, and the latent image This is because the range of the concentration that can be expressed can be widened.

In FIG. 28 (a), as an example of a state of arranging the elements in a range smaller than twice, each 1.5 times the range of the width (W ₁₎ of the image line elements of the width of the image line (W ₁₎ FIG. 28 (b) shows a state in which each element is arranged in a range twice as large as the width (W ₁ ) of the image line. Each element shown in FIGS. 28A and 28B is divided into an observation part (V) and a non-observation part (V ′) with the center of the line width (W ₁ ) as the boundary, and each element is equally spaced. It has shown the state arrange | positioned.

As shown in FIG. 28A, when each element is arranged in the range of 1.5 times the width (W ₁ ) of the image line, the background element (11C) and the first latent image element (11A) In the observation part (V) and the observation part (V) of the first latent image element (11A) and the second latent image element (11B), there are parts located in the same phase. When the second element (21) overlaps the observation part (V) of each element in the first to fourth arrangements described above, the first latent image part (3) and the second latent image part Contrast of (4) and background part (6) will fall. In order to explain this, the second element (21) is provided in the observation part (V) of the background element (11C) and the observation part (V) of the first latent image element (11A) shown in FIG. An example of the overlapping first arrangement is shown in FIG.

In the arrangement shown in FIG. 29A, the second element (21) is half of the entire observation part (V) of the background element (11C) and the observation part (V) of the first latent image element (11A). The state which overlaps with is shown. At this time, the second element (21) overlapping the observation part (V) of the background element (21) and the second latent image element (21) overlapping the observation part (V) of the first latent image element (11A). The difference in the area ratio is the contrast between the pattern of the latent image for the first latent image element (11A) and the background thereof. In the case of the arrangement shown in FIG. 29A, the contrast between the pattern of the latent image and the background is the second element (21) that overlaps the range of ¼ of the width (W ₁ ) of the image line.

  Subsequently, an example in which the second element (21) overlaps the observation portion (V) of each element shown in FIG. 28 (b) in the first arrangement is shown in FIG. 29 (b). In the arrangement shown in FIG. 29 (b), the second element (21) includes the entire observation part (V) of the background element (11C), a part of the non-observation part (V), and the first latent image element (11A). ) In a part of the observation part (V).

As shown in FIG. 29 (b), in the case of the configuration in which the observation portions (V) of the respective elements are arranged in different phases, the width (W ₂ ) of the image line of the second element (21) is adjusted, By superposing the second element (21) on a small part of the observation part (V) of the first latent image element (11A), the pattern of the latent image with respect to the first latent image element (11A) and its background The contrast can be increased.

In the case of the first arrangement shown in FIG. 29A, the observation portion (V) of the first latent image element (11A) has the second only up to ½ of the line width (W ₁ ). The element (21) cannot be formed. This is because if the range of the second element (21) overlapping the observation part (V) of the first latent image element (11A) is larger than ½ of the line width (W ₁ ), the second latent image element (11A) This is because the second element (21) overlaps the observation part (V) of the image element (11B), and the first arrangement is not achieved. For this reason, in the case of the arrangement shown in FIG. 29A, the density range in which the symbol constituted by the first latent image element (11A) can be expressed is limited.

On the other hand, in the case of the first arrangement shown in FIG. 29B, the second element (21) that overlaps the observation portion (V) of the first latent image element (11A) is the line width (W ₁ ). (Because it does not overlap the second latent image element (11B) even if it is larger than ½ of the line width (W ₁ )), the first latent image It is possible to widen the range of density that can represent the pattern of the latent image for the element (11A).

  Although the above description has been made with an example in which the second element (21) overlaps in the first arrangement, the same applies to the second arrangement to the fourth arrangement.

In this way, the latent image pattern for the first latent image element (11A), the latent image pattern for the second latent image element (11B), and the background contrast of the latent image pattern when the latent image is observed. In order to obtain a configuration in which the range of densities that can be expressed by the latent image can be widened, it is preferable to arrange each element in a range that is twice the width (W ₁ ) of the image line.

Next, the reason why the first pitch (P ₁ ) is preferably smaller than three times the image line width (W ₁ ) will be described. This is because if the first pitch (P ₁ ) is larger than three times the width (W ₁ ) of the image line, the first pattern (10) for forming the pattern of the latent image becomes large, and the precious printed matter This is not preferable because it is restricted by the design that constitutes, for example, other printed designs. In the present invention, the second element (21) needs to overlap at least two observation portions (V) of the first element (11) arranged in different phases with different area ratios. This is because if the interval is generated, the width (W ₂ ) of the image line of the second element (21) needs to be increased, and the processing efficiency is lowered. From the above, it is preferable that the first pitch (P ₁ ) is smaller than three times the width (W ₁ ) of the image line.

  When the first element (11) and the second element (21) having such a configuration overlap in the first to fourth arrangements described above, the latent image pattern (5) can be observed. .

  In the latent image pattern formed body (1) described above, the latent image pattern (5) is observed in the color of the second pattern (20), but the same formation method as the second pattern (20), and By forming the third pattern (30) having a hue different from that of the first pattern (10) and the second pattern (20), the latent image can be changed in color. Therefore, the third pattern (30) will be described below.

(Third pattern)
As shown in FIG. 30, the third pattern (30) has a third element (31) of a color different from that of the first element (11) and the second element (21) on the substrate (2). It is arranged in multiple lines. The method of forming the third element (21) is the same as the method of forming the second element (21) described above, and a known printing method such as offset printing, gravure printing, or ink jet printing can be used. .

Further, the configuration of the image line is the same as that of the second element (21), and may be any of an image line, a pixel, or a combined image line and pixel configuration. For the image line of the third element (31), the third pitch (P ₃ ) and the width of the image line (W ₃ ) are described, and for the pixel of the third element (31). Are described as pixel height (W ′ ₃ ), pixel width (X ₃ ), and pixel pitch (p ₃ ).

The ranges of the third pitch (P ₃ ), the pixel width (X ₃ ), and the pixel pitch (p ₃ ) are the second pitch (P ₂ ) and the pixel width (X ₂ ) and the range of the pixel pitch (p ₂ ). The range of the line width (W ₃ ) and the pixel height (W ′ ₃ ) depends on the arrangement of the first element (11), the second element (21), and the third element (31). The arrangement of the first element (11), the second element (21), and the third element (31) described below will be described later. Note that the range of the pixel height (W ′ ₃ ) is the same as the range of the image line width (W ₃ ), and thus the description thereof is omitted.

  Similar to the second pattern (20), the third pattern (30) is the same size as the area where the first pattern (10) is formed or the area where the first pattern (10) is formed. It is necessary to increase the size and cover the first pattern (10). This is because all the latent images for the first latent image element (11A) and the second latent image element (11B) appear. And as shown in FIG. 31, the 3rd pattern (30) overlaps so that the 1st pattern (10) may be covered, and the 3rd element (31) does not overlap with the 2nd element (21). Are arranged as follows. Subsequently, a specific arrangement of the first element (11), the second element (21), and the third element (31) will be described.

  When the third pattern (30) is formed, the first element (11), the second element (21), and the third element (31) are arranged in the following two ways. There are a fifth arrangement and a sixth arrangement, respectively.

  In the first arrangement (hereinafter referred to as the fifth arrangement) when the third pattern (30) is formed, the second element (21) is the first latent image element (11A), the second Of the latent image element (11B) and the background element (11C), the third element overlaps at least a part of the observation part (V) of one element and does not overlap the observation part (V) of the other element. (31) does not overlap the second element (21) and the second of the first latent image element (11A), the second latent image element (11B) and the background element (11C) The arrangement is such that the element (21) overlaps at least part of the observation part (V) of one element that does not overlap and does not overlap the observation part (V) of another element.

  The reason for this arrangement is that in the first to fourth arrangements of the first element (11) and the second element (21) described above, the first latent image element (11A), the second element When the second element (21) overlaps two elements arranged in different phases among the latent image element (11B) and the background element (11C), the portion where the second element (21) overlaps is different. In order to be observed at the density, it is necessary to vary the area ratio of the second element (21) overlapping the observation part (V), but by forming the third pattern (30), the first latent Of the image element (11A), the second latent image element (11B), and the background element (11C), the second element (21) overlaps one of the two elements, and the third element (31) overlaps the other. If arranged so as to overlap, the pattern of the latent image with respect to the first latent image element (11A), the second latent image element (1 Each of symbols and the background of the latent image for B) is because it is possible to observe in different colors.

  FIG. 32A shows an example of the fifth arrangement.

  FIG. 32 (a) shows that the second element (21) overlaps the entire first latent image element (11A) and does not overlap the second latent image element (11B) and the background element (11C). The third element (31) overlaps the entire second latent image element (11B) and does not overlap the first latent image element (11A) and the background element (11C).

At this time, the width (W ₂ ) and the third element (W ₃ ) of the image line of the second element (21) need to be at least larger than 10 μm in order not to deteriorate the visibility of the latent image. Is a range that overlaps the observation part (V) of one element and does not overlap the observation part (V) of another element.

  Regions in which the first pattern (10), the second pattern (20), and the third pattern (30) of the latent image pattern forming body (1) of the fifth arrangement shown in FIG. When observed from an oblique direction, the latent image pattern (5) shown in FIG. 32B is observed. The letter “A” of the latent image pattern (5) observed at this time is visually recognized by the color of the second element (21), and the background of the letter “A” is the background of the third element (31). Visible in color. The reason why the latent image pattern (5) is thus observed is as follows.

  Of the latent image pattern (5), the first pattern (10) for the portion where the letter “A” is observed includes a first latent image element (11A) and a background element (2) arranged in two different phases. 11C), and in the first arrangement, the second element (21) overlaps the observation part (V) of the first latent image element (11A), which is shown in FIG. 32 (c). A first latent image portion (3) that is observed in the color of the second element (21) is formed. In addition, the second element (21) does not overlap the background element (11C), but the second element (21) overlaps the observation part (V) of the first latent image element (11A). A background portion (6) observed as outlined in FIG. 32 (c) is formed.

  In the first pattern (10) for the portion of the latent image pattern (5) where the background of the letter “A” is observed, the observation portion (V) of the second latent image element (11B) is used. By overlapping the third element (31), the second latent image portion (4) observed with the color of the third element (31) shown in FIG. 32 (d) is formed. At this time, since the color of the second element (21) and the color of the third element (31) are different, the characters “JPN” are different from the colors in which the characters “NPB” are observed. Observed. Further, the third element (31) does not overlap the background element (11C), but the third element (21) overlaps the observation part (V) of the second latent image element (11B). A background portion (6) observed as outlined in FIG. 32 (d) is formed.

  From the above description, in the fifth arrangement shown in FIG. 32A, the background portion (6) serving as the background for the first latent image portion (3) and the second latent image portion (4). ) Is observed in white, the first latent image portion (3) observed in the color of the second element (21) is arranged in the letter “A” of the latent image pattern (5). Thus, the entire character “A” is observed in the color of the second element (21). In addition, the second latent image portion (3) observed with the color of the third element (31) is arranged in the background of the character “A” of the latent image pattern (5), thereby “A”. The entire background of the character is observed in the color of the third element (31).

  In this way, in the case of the fifth arrangement shown in FIG. 32A, the letters “A” and “A” are caused by the difference in color between the second element (21) and the third element (31). The background of the character “is observed as a latent image pattern (5) of different colors. Note that a fifth arrangement different from the arrangement shown in FIG. 32A, for example, the second element (21) overlaps the observation part (V) of the first latent image element (11A), and the background element (11C Even when the third element (31) is arranged so as to overlap the observation part (V) of FIG. 2), the character “A” is changed depending on the color difference between the second element (21) and the third element (31). The background of the letter “A” becomes a different color and the latent image pattern (5) is observed.

  Next, the second arrangement (hereinafter referred to as the sixth arrangement) when the third pattern (30) is formed will be described.

  When the third pattern (30) is formed, the sixth arrangement is such that the second element (21) includes the first latent image element (11A), the second latent image element (11B), and the background element. (11C), the third element (31) overlaps at least a part of each of the observation parts (V) of the two elements arranged at different phases and does not overlap the observation part (V) of the other elements. ) Does not overlap the second element (21), and the second element (11C) of the first latent image element (11A), the second latent image element (11B), and the background element (11C) 21) is an arrangement that at least overlaps a part of the observation part (V) of the remaining element that does not overlap. In this case, it is necessary to change the area ratio at which the second element (21) overlaps the two elements.

  FIG. 33A shows an example of the sixth arrangement.

  FIG. 33 (a) shows that the second element (21) overlaps the entire first latent image element (11A) and a part of the observation part (V) of the background element (11C). A state in which the third element (31) does not overlap the element (11B) but overlaps the entire second latent image element (11B) and does not overlap the first latent image element (11A) and the background element (11C). Is shown. Further, the area ratio of the second element (21) that overlaps the observation part (V) of the first latent image element (11A) is equal to the second element (21 that overlaps the observation part (V) of the background element (11C). ) Is larger than the area ratio. The arrangement shown in FIG. 33A differs from the first arrangement shown in FIG. 24A in that the third element (31) overlaps the second latent image element (11B).

At this time, the width (W ₂ ) and the third element (W ₃ ) of the image line of the second element (21) need to be larger than at least 10 μm in order not to deteriorate the visibility of the latent image. The upper limit of the line width (W ₂ ) of the second element (21) may be appropriately adjusted according to the arrangement of each element shown in FIGS. 14 and 15 to be the sixth arrangement. It is necessary to overlap the observation part (V) of the element with different area ratios so as not to overlap the observation part (V) of another element. The upper limit of the width of the third image line elements (31) _{(W 3)} is arranged in each element the width of the second field line elements (21) and _{(W 2)} shown in FIGS. 14 and 15 However, it is necessary to ensure that it does not overlap the second element (21).

  An area where the first pattern (10), the second pattern (20), and the third pattern (30) of the latent image pattern forming body (1) having the sixth arrangement shown in FIG. When observed from an oblique direction, the latent image pattern (5) shown in FIG. 33 (b) is observed. The character “A” of the latent image pattern (5) observed at this time is visually recognized at a high density of the color of the second element (21), and the background of the character “A” is the third element ( It is visually recognized with the color of 31). The reason why the latent image pattern (5) is thus observed is as follows.

  Of the latent image pattern (5), the first pattern (10) for the portion where the letter “A” is observed includes a first latent image element (11A) and a background element (2) arranged in two different phases. 11C), and in the sixth arrangement shown in FIG. 33A, the second element (21) overlaps the observation part (V) of the first latent image element (11A). A first latent image portion (3) observed with the color of the second element (21) shown in FIG. 33 (c) is formed. In addition, when the second element (21) overlaps the observation part (V) of the background element (11C), the background part (6) observed in the color of the second element (21) shown in FIG. ) Is formed. At this time, the character “NPB” indicates that the area ratio of the second element (21) overlapping the observation part (V) of the first latent image element (11A) corresponding to the character “NPB” is “NPB”. Since the area ratio of the second element (21) that is larger than the area ratio of the second element (21) that overlaps the background element (11C) corresponding to the background of the character of the character, It is observed at a higher density than the background of the letters “NPB”.

  In the first pattern (10) for the portion of the latent image pattern (5) where the background of the letter “A” is observed, the observation portion (V) of the second latent image element (11B) is used. By overlapping the third element (31), the second latent image portion (4) observed with the color of the third element (31) shown in FIG. 33 (d) is formed. In addition, when the second element (21) overlaps the observation part (V) of the background element (11C), the background part (21) observed in the color of the second element (21) shown in FIG. 6) is formed. In addition, the background part (6) shown in FIG.33 (c) and the background part (6) shown in FIG.33 (d) are observed by the same color.

  From the above description, in the sixth arrangement shown in FIG. 33A, the background portion (6) common to the background of the letters “A” and “A” is the second element (21). The first latent image portion (3) observed at a high density while the color of the image is visually recognized at a low density is arranged on the letter “A” of the latent image pattern (5), so that the first The color of the latent image portion (3) is emphasized, and the color of the second element (21) is observed at a high density as the whole character “A”. Further, the second latent image portion (4) observed with the color of the third element (31) is arranged in the background of the character “A” of the latent image pattern (5), so that the second The color of the latent image portion (4) is emphasized, and the entire background of the letter “A” is observed in the color of the third element (31).

  It should be noted that the second element (21) is different from the sixth arrangement shown in FIG. 33 (a), for example, in the observation part (V) of the second latent image element (11B) and the background element (11C). Even in the case where the third element (31) overlaps the observation area (V) of the first latent image element (11A) with overlapping at different area ratios, the background of the letters “A” and “A” It is observed as a latent image pattern (5) of different colors. In this case, with respect to the latent image pattern (5) shown in FIG. 33 (b), the colors of the characters “A” and “A” are interchanged and observed.

  On the other hand, in the sixth arrangement, the second element (21) overlaps with the observation area (V) of the first latent image element (11A) and the second latent image element (11B) at different area ratios, and the background element When the third element (31) overlaps the observation part (V) of (11C), the background part (5) common to the background of the letters “A” and “A” of the latent image pattern (5) ( 6) is visually recognized by the third element (31), and the color (second element color) in which the first latent image portion (3) arranged in the letter “A” is visually recognized; The density difference between the colors (second element colors) in which the second latent image portion (4) arranged in the background of the character “A” is visually recognized is emphasized, and the characters “A” and “A” are emphasized. The background of the character is observed as a latent image pattern (5) of different density.

  As described above, in the sixth arrangement, the third element (31) is the second of the first latent image element (11A), the second latent image element (11B), and the background element (11C). In this example, the element (21) overlaps the observation part (V) of the remaining one element that does not overlap, but the third element (31) further observes one element where the second element (21) overlaps. It may overlap part (V). However, in this case, as described above, the third element (31) needs to be arranged so as not to overlap the second element (21). An example of this arrangement is shown in FIG.

  FIG. 34 (a) shows that from the sixth arrangement shown in FIG. 33 (a), the third element (31) is part of the observation part (V) of the background element (11C) and the non-observation part (V ') Shows a state that overlaps the whole. In addition, the area ratio of the third element (31) overlapping the observation part (V) of the second latent image element (11B) is equal to the third element (31) overlapping the observation part (V) of the background element (11C). ) Is larger than the area ratio.

  In this case, the visibility of the first latent image portion (3) and the second latent image portion (4) is the same as in the arrangement shown in FIG. 33 (a), but the background element (11C) is observed. When the second element (21) and the third element (31) overlap the part (V), the colors of the second element (21) and the third element (31) are observed in a mixed state. A background portion (6) is formed.

  As a result, the background portion (6) which is common to the background of the characters “A” and “A” of the latent image pattern (5) is the same as the color of the second element (21) and the third element ( 31) The first latent image portion (3) observed in the color of the second element (21) is observed in the mixed color state, and the character “A” in the latent image pattern (5) is observed. The color of the first latent image portion (3) is emphasized, and the entire character “A” is observed in the color of the second element (21). Further, the second latent image portion (4) observed with the color of the third element (31) is arranged in the background of the character “A” of the latent image pattern (5), so that the second The color of the latent image portion (4) is emphasized, and the entire background of the letter “A” is observed in the color of the third element (31).

  In the arrangement shown in FIG. 34A, the second element (21) and the third element (31) overlap the observation part of the background element (11C), but the first latent image element (11A) ) Or when the second element (21) and the third element (31) overlap the observation part of the second latent image element (11B), the first latent image part (3) or the second latent image element (11B) The image portion (4) is observed by a color mixture of the colors of the second element (21) and the third element (31).

  In this way, among the first latent image element (11A), the second latent image element (11B), and the background element (111C), the second element (21) and the observation part (V) of one element When the third element (31) overlaps, the latent image pattern (5) with a different visibility from the latent image pattern (5) observed with the arrangement described so far is observed. can do.

  By adding the third pattern (30) described above, it becomes possible to add the color of the third element (31) to the latent image when observed from an oblique direction so that the latent image can be visually recognized. Can enhance sex.

  Similarly, a plurality of fourth elements having different colors from the first element (21) and the third element (31) are arranged in a line to form a fourth pattern, and the second element ( 21), the third element (31) and the fourth element do not overlap each other, and each of the second element (21), the third element (31) and the fourth element is the first element The design of the latent image pattern can be improved by disposing it so as to overlap any of the observation portions (V) of the latent image element (11A), the second latent image element (11B), and the background element (11C). it can.

  In the latent image pattern formed body (1) described above, the characters “NPB” as the first latent image portion (3) and the characters “JPN” as the second latent image portion (4) have different densities or The background of the characters “NPB” and “JPN” is observed with the same density or color as the common background portion (6), and the first latent image portion (3) and the second Although the latent image pattern (5) is formed by the arrangement of the latent image portion (4), as shown in FIGS. 35 (a) and 35 (b), the “NPB” The background portion (16) for the characters "" and the background portion (17) for the characters "JPN" appear in different densities or colors, and the characters "NPB" and "JPN" are used as a common latent image portion (15). By making it appear at the same density or color, the latent image pattern (5) shown in FIG. 36 can be formed. In the latent image pattern (5) shown in FIG. 36, the background of the letter “A” and the letter “A” is observed in different densities or colors. The difference is that the background portion (16) for the characters "NPB" and the background portion (17) for the characters "JPN" are different in density or color. Subsequently, for the configuration for forming the latent image pattern (5) shown in FIG. 36, an example of the latent image pattern forming body (1A) in which the first pattern (10) and the second pattern (20) are formed. I will explain it.

  FIG. 37 (a) is a schematic diagram showing the arrangement of the latent image pattern (5) and the first pattern (10), and FIG. 37 (b) shows the latent line at the position of the thick line frame shown in FIG. It is the figure which expanded the 1st pattern (10) with respect to an image pattern (5). Note that the position of the thick line frame shown in FIG. 37A is the boundary between the portion of the latent image pattern (5) where the character “A” is observed and the portion where the background of the character “A” is observed. Is the position. Also, the alternate long and short dash line shown in FIG. 37 (b) is for indicating the boundary between the portion where the letter “A” is observed and the portion where the background of the letter “A” is observed. The first element (11) arranged on the second line corresponds to the character “A” (character “NPB” and its background) of the latent image pattern (5), and is arranged on the right side of the alternate long and short dash line. The latent image element (11B) corresponds to the background of the character “A” (“NPB character and its background”) of the latent image pattern (5).

  As shown in FIG. 37 (b), the first element (11) constituting the first pattern (10) of the latent image pattern forming body (1A) is arranged in three different phases. This configuration is the same as the first pattern (10) of the latent image pattern formed body (1), but in the case of the latent image pattern formed body (1A), the first elements (3) arranged in three different phases ( 11) correspond to the background for the characters “NPB”, the background for the characters “JPN”, and the characters “JPN” and “NPB”. Hereinafter, among the first elements (11) arranged in three different phases, the first element (11) corresponding to the background of the characters “NPB” is referred to as “first background element (11D)”. The first element (11) corresponding to the background of the characters “JPN” is set to “second background element (11E)”, and the first element (11) corresponding to the characters “NPB” and “NPB” is set to This will be described as “latent image element (11F)”.

  As shown in FIG. 37 (b), the latent image element (11F) corresponding to the characters “NPB” and the latent image element (11F) corresponding to the characters “JPN” are arranged in the same phase. The background element (11D), the second background element (11E), and the latent image element (11F) are arranged in different phases.

  The second element (21) overlaps the observation part (V) of the first background element (11D) and the second background element (11E) with respect to the first pattern (10) having the above configuration. Thus, as shown in FIG. 35, a background portion (16) for the characters “NPB” and a background portion (17) for the characters “JPN” are formed. Hereinafter, the background portion corresponding to the first background element (11D) and the characters “NPB” will be described as “first background portion (16)”. The background portion corresponding to the second background element (11E) and the character “JPN” will be described as “second background portion (17)”.

  At this time, the area ratio of the second element (21) overlapping the observation part (V) of the first background element (11D) is set to the second element overlapping the observation part (V) of the second background element (11E). By making it larger than the area ratio of (21), the first background portion (16) is observed at a higher density than the second background portion (17) as shown in FIG. Further, the second element (21) does not overlap the observation part (V) of the latent image element (11F), and the observation part (V) of the first background element (11D) and the second background element (11E). ) Overlaps with the second element (21), thereby forming the latent image portion (35) observed as outlined in FIG.

  When the latent image pattern formed body (1A) is observed obliquely, as shown in FIG. 36, the latent image portion (15) common to the background of the letters “A” and “A” is white. The first background portion (16) observed at a high density while being observed without being placed is placed on the letter “A” of the latent image pattern (5), so that the letter “A” as a whole is: The color of the second element (21) is observed at a high density. Further, the second background portion (17) observed at a low density with respect to the first background portion (16) is arranged in the background of the character “A” of the latent image pattern (5), As a whole background of the letter “A”, the color of the second element (21) is observed at a low density.

  Note that the latent image pattern (5) visually recognized when the latent image pattern formed body (1A) is observed from an oblique direction is not limited to the pattern shown in FIG. 36, but the first background element (11D) and the second background. By changing the arrangement of the element (11E), the latent image element (11F), and the second element (21) in the same manner as the first arrangement to the fourth arrangement described above, various latent image patterns ( 5) is observed. Also, when forming the third pattern (30), each element may be arranged similarly to the fifth arrangement and the sixth arrangement described above.

  The latent image observed with the conventional latent image pattern forming body (Japanese Patent No. 2600094) differs for each latent image, like the characters “NPB” and “JPN” which are the patterns of the latent image portion of the present invention. If such a latent image is simply placed on the letter “A” and its background, the difference in density between the letter “A” and its background or the color The difference cannot be obtained, and the latent image pattern (5) of the present invention cannot be observed. Also, if the density of the latent image portion constituting the character “A” and the density of the latent image portion constituting the background of the character “A” are different from each other, and the density of each background portion is different. The latent image as a whole is observed at four densities, and there is a problem that the contrast is lowered between the letter “A” and its background, or the pattern of the latent image portion and its background. Although it is possible to arrange a conventional latent image with a different color on the letter “A” and its background, the structure is simple and may be duplicated. In addition, in order to cause the latent image portion corresponding to the character “A” and the latent image portion corresponding to the background of the character “A” to appear in different colors, the first image constituting each latent image portion is formed. It is necessary to provide a sufficient difference in the phase of the elements. In this case, the interval between the image lines (the second element and the third element in the present invention) for visually recognizing the latent image is increased, resulting in a latent image. The visibility of an image will fall. Therefore, the latent image pattern formed body (1) of the present invention has a common background portion (6) for the first latent image portion (3) and the second latent image portion (4), and the first latent image portion. Each of the background of the character “A” composed of (3) and the background of the character “A” composed of the second latent image portion (4) has a different color or density with respect to the background portion (6). By appearing, the visibility of the latent image pattern (5) is excellent.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail using an Example, the content of this invention is not limited to the range of these Examples.

Example 1
Example 1 is a latent image pattern formed body (1) in which a first pattern (10) and a second pattern (20) are formed. The latent image pattern formed body (1) of Example 1 will be described with reference to the drawings described in the embodiment.

  As shown in FIG. 1, the latent image pattern formed body (1) of Example 1 is formed by forming a first pattern (10) and a second pattern (20) on a base material (2). The base material (2) was formed from white paper, and the thickness of the base material (2) was 100 μm.

The first pattern (10) shown in FIG. 3 was formed as a watermark pattern by a circular net at the stage of wet paper in a paper machine. At this time, the first element (11) formed of a straight line having a concave shape with a depth (h) of the first element of 45 μm and an image line width (W ₁ ) of 200 μm is applied to the first pitch ( A _first pattern (10) was formed by arranging a plurality of first elements (11) in a line shape with P ₁ ) of 600 μm.

At this time, the first pattern (10) forms the characters “NPB” shown in FIG. 10C by changing the phase of the first elements (11) arranged in a plurality of lines. 1 latent image element (11A), background element (11C), and a second latent image element (11B) constituting the character "JPN" shown in FIG. 11 (c) and a background element (11C). did. The first latent image element (11A) is formed with a phase shifted by へ pitch below the _first pitch (P ₁ ) with respect to the background element (11C). (11B) was formed by shifting the phase downward by 2/3 pitch of the first pitch (P ₁ ) with respect to the background element (11C). Further, a plurality of symbols of the first latent image portion (3) (“NPB” characters in the first embodiment) are arranged to form a character “A” that is a symbol of the latent image pattern (5). A plurality of symbols (character “JPN” in Example 1) of the latent image portion (4) of 2 are arranged to form a background of the character “A” of the latent image pattern (5).

The second pattern (20) shown in FIG. 17 was formed by offset printing using cyan ink (manufactured by TK High Unity Neo Toyo Ink). At this time, the second element (21) composed of a straight line having an image line width (W ₂ ) of 250 μm is set to a second pitch (P ₂ ) of 600 μm, and the second element (21) is set to a line. A second pattern (20) was formed by arranging a plurality of the patterns.

  A first pattern (10) and a second pattern (20) having the above-described configuration were formed in the first arrangement shown in FIG. 24 to produce a latent image pattern formed body (1).

  When the latent image pattern formed body (1) thus produced is observed from an oblique direction, the letter “A”, which is the latent image pattern (5) shown in FIG. ). Further, when the portion where the character “A” of the latent image pattern (5) is observed is enlarged, the first latent image portion (3) shown in FIG. 24C is observed, and the latent image pattern (5 When the portion where the background of the letter “A” is observed is magnified, the second latent image portion (4) shown in FIG. 24D is observed.

(Example 2)
Example 2 is latent image pattern formation (1) in which intaglio ink is printed to form a convex first element (11) and the second element (21) is composed of pixels. In the second embodiment, only differences from the first embodiment will be described.

The second element (21) of Example 2 is composed of pixels by characters shown in FIG. The second element (21) was formed by setting the pixel width (X ₂ ) to 250 μm, the pixel height (W ₂ ) to 250 μm, and the pixel pitch (p ₂ ) to 300 μm. The second pitch _{(P 2)} and 600 .mu.m, to form a second pattern with a plurality disposed second element (21) to the parallel line-shaped (20).

When the latent image pattern formed body (1) of Example 2 thus produced was observed from directly above the surface on which the second pattern (20) was formed, the second pattern (20) was observed. . At this time, the width (X ₂ ) of the pixels constituting the second element (21) is 250 μm, whereas the pixel pitch (p ₂ ) is 300 μm, and the pixel interval is 50 μm. Because of the small size, the second pattern (20) was visually observed in the same manner as the pattern formed by the second element (21) by a straight line. Therefore, when the second pattern (20) was observed from directly above with a magnifier, pixels by characters were observed. Similarly to Example 1, when the latent image pattern formed body (1) of Example 2 was observed from an oblique direction, the same latent image as Example 1 could be observed.

  Thus, as in the latent image pattern forming body (1) of Example 2, not only the latent image is observed when observed from an oblique direction, but also the second element (21) is formed with minute pixels. Thus, the latent image pattern formed body (1) can have other forgery prevention effects.

(Example 3)
In the third embodiment, a convex plate is pressed with a press to form a concave first element (11), and further a third pattern (30) is formed. The latent image pattern formed body (1). The third embodiment will be described only with respect to differences from the first embodiment.

In Example 3, the second pattern (20) was formed by offset printing using cyan ink (manufactured by TK High Unity Neo Toyo Ink). At this time, the width (W ₂ ) of the image line is constituted by a straight line of 200 μm, the second pitch (P ₂ ) is 600 μm, and a plurality of second elements (21) are arranged in a single line shape. A pattern (20) was formed.

  The third pattern (30) was formed by offset printing using magenta ink (TK High Unity Neo Toyo Ink). Other configurations are the same as those of the second pattern (20).

  The first pattern (10) and the second pattern (20) having the above configuration are formed on the base material (2) on which the first pattern (10) is formed, as shown in FIG. 38 (a). To form a latent image pattern formed body (2). In FIG. 38A, the second element (21) formed of cyan ink overlaps the entire first latent image element (11A), and the third element (31) formed of magenta ink is the first element. A state is shown in which the entire two latent image elements (11B) overlap.

  When the latent image pattern formed body (1) thus produced is observed from an oblique direction, the latent image pattern (5) shown in FIG. 38 (b) is observed, and the letter “A” is observed in a magenta color, The background of the letter “A” was observed in cyan. When the portion of the latent image pattern (5) where the letter “A” is observed is enlarged, the first latent image portion (3) is observed in magenta as shown in FIG. As shown in FIG. 38D, the second latent image portion (4) was observed in cyan.

(Example 4)
Example 4 is a latent image pattern formed body in which the second element (21) and the third element (31) overlap with the observation part (V) of the background element (11C) as compared with Example 3. 1). In the fourth embodiment, only differences from the third embodiment will be described.

In Example 4, the second pattern (20), the width of the image line of the second element (21) and _{(W 2)} is formed by 250 [mu] m, the third pattern (30), the third element ( The width (W ₃ ) of the image line 31) was 250 μm.

  As shown in FIG. 39 (a), the second element (21) is the entire first latent image element (11A) and the observation part (V) of the background element (11C) shown in FIG. ) And the third element (31) overlaps the entire observation part (V) of the second latent image element (11B), the upper half of the observation part (V) of the background element (11C), and It arrange | positioned so that it may overlap with the whole non-observation part (V ') of a background element (11C).

  When the latent image pattern formed body (1) thus produced was observed obliquely, a latent image pattern (5) shown in FIG. 39 (b) was observed. At this time, the background portion (6) common to the background of the characters “A” and “A” of the latent image pattern (5) is the color of the second element (21) and the third element (31). ) Is observed in a mixed color state, the color of the first latent image portion (3) arranged in the character “A” of the latent image pattern (5) is emphasized, and the entire character “A” is highlighted. As cyan. Further, the color of the second latent image portion (4) arranged in the character “A” of the latent image pattern (5) is emphasized, and the entire background of the character “A” was observed in magenta. . Further, when the portion of the latent image pattern (5) where the letter “A” is observed is enlarged, as shown in FIG. 39 (c), the first latent image portion (3) is observed in magenta. As shown in FIG. 39 (d), the second latent image portion (4) was observed in cyan.

DESCRIPTION OF SYMBOLS 1, 1A Latent image pattern formation body 2 Base material 3 1st latent image part 4 2nd latent image part 5 Latent image pattern 6 Background part 10 1st pattern 11 1st element 11A 1st latent image element 11B The second latent image element 11C The background element 11D The first background element 11E The second background element 11F The latent image element 15 The latent image portion 16 The first background portion 17 The second background portion 20 The second pattern 21 The second pattern Element 30 Third pattern 31 Third element W ₁ Stroke width (first element)
W ₁ ′ Pixel height P ₁ First pitch X ₁ pixel width p ₁ pixel pitch W ₂ Stroke width (second element)
W ₂ ′ Pixel height P ₂ Second pitch X ₂ pixel width p ₂ pixel pitch V Observation part V ′ Non-observation part V _{1 A} convex surface on the front side when observed obliquely
Far side when viewed from the upper surface V ₅ oblique flat portion V ₄ convex shapes of the first element is not formed substrate surface V ₃ protruding convex shape which is Okugawa when observed from V ₂ obliquely become concave surface V the near side when observed from ₆ oblique concave surface V ₇ concave first flat portion of the element is not formed substrate V _8-concave lower surface V ₉ concave Or a flat part Q of the base material on which the convex first element is not formed Q convex vertex R concave base

Claims (17)

  A latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and a plurality of concave and / or convex first elements are arranged in a line on at least a part of a substrate. And a second pattern in which a plurality of second elements having a different color from the first element are arranged in a single line, and the first element is a first latent image. Element, a second latent image element, and a background element, wherein the first latent image element, the second latent image element, and the background element are all different in phase and arranged at the same pitch, and Among the one latent image element, the second latent image element, and the background element, the second element overlaps at least two elements with different area ratios, and the second element overlaps the first latent image element. Are overlapped or not overlapped to form a first latent image portion, and the second latent image element When the second element overlaps or does not overlap, a second latent image part is formed, and when the second element overlaps or does not overlap the background element, the first latent image part and the first element overlap each other. A ratio of the area of the second element that overlaps at least two of the first latent image element, the second latent image element, and the background element is formed as a background portion common to the two latent image portions. The first latent image portion and the second latent image portion have different densities, and the latent image pattern is formed by the plurality of first latent image portions and the plurality of second latent image portions. When the substrate is tilted and observed, the plurality of first latent image portions and the plurality of second latent image portions are observed at different densities due to the difference in the area ratio, and a plurality of The pattern of the latent image pattern by one of the first latent image portion or the plurality of second latent image portions. It observed, while the latent image pattern formed body characterized in that the background pattern of the latent image pattern is observed. The relationship between the first latent image element, the second latent image element, the background element and the second element is as follows:
1-1) The first latent image element overlaps the first latent image element without overlapping the second element, and the second latent image element does not overlap the second element. The second element overlaps with an area ratio different from the area ratio of the second element overlapping
1-2) The area ratio different from the area ratio of the second element overlapping the first latent image element, the second element overlapping the first latent image element, and the second latent image element. The second element overlaps without the background element overlapping the second element, or
1-3) The second element overlaps the second latent image element without the second element overlapping the first latent image element, and the second latent image element overlaps the background element. The second element overlaps with an area ratio different from the area ratio of the second element overlapping
1-4) The area ratio different from the area ratio of the second element overlapping the first latent image element, the second element overlapping the first latent image element, and the second element overlapping the first latent image element. And the second element overlaps the background element, the area ratio of the second element overlapping the first latent image element, and the area ratio of the second element overlapping the second latent image element. The second elements overlap at different area ratios;
The latent image according to claim 1, wherein the first latent image portion, the second latent image portion, and the background portion are formed by any one of the items 1-1) to 1-4). Image pattern forming body. A latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and a plurality of concave and / or convex first elements are arranged in a line on at least a part of a substrate. And a second pattern in which a plurality of second elements having different colors from the first element are arranged in a line, the first element being a latent image element, The latent image element, the first background element, and the second background element are all different in phase and arranged at the same pitch, and the latent image element The second element overlaps at least two of the first background element and the second background element with different area ratios, and the second element overlaps or overlaps the first background element. The first background portion is formed, and the second background element When the second element overlaps or does not overlap, a second background portion is formed. When the second element overlaps or does not overlap the latent image element, the first background portion and the second background portion overlap each other. A latent image portion common to the background portion of the second element is formed, and the difference in the area ratio of the second element that overlaps at least two of the latent image element, the first background element, and the second background element Thus, the first background portion and the second background portion have different densities, the latent image pattern is formed by the first background portion and the second background portion, and the substrate is tilted for observation. Then, due to the difference in the area ratio, the first background portion and the second background portion are observed at different concentrations, and the latent background is detected by one of the first background portion or the second background portion. The pattern of the image pattern is observed, and on the other hand, the latent image pattern The latent image pattern formed body characterized in that the background pattern is observed.


The relationship between the first background element, the second background element, the latent image element, and the second element is:
2-1) The second element overlaps the latent image element, the second element overlaps the first background element, and the second background element overlaps the latent image element. The second element overlaps with an area ratio different from the area ratio of the two elements, or
2-2) The second element overlaps the latent image element, and the second element has an area ratio different from the area ratio of the second element overlapping the latent image element on the first background element. Overlap, the second element does not overlap the second background element, or
2-3) The second element overlaps the first background element without overlapping the second element with the latent image element, and overlaps the first background element with the second background element. The second element overlaps with an area ratio different from the area ratio of the second element, or
2-4) The second element overlaps the latent image element, and the second background element has an area ratio different from the area ratio of the second element overlapping the latent image element. The second background element overlaps the second element with an area ratio different from the area ratio of the second element overlapping the latent image element and the area ratio of the second element overlapping the first background element. Elements overlap,
4. The latent image according to claim 3, wherein the first background portion, the second background portion, and the latent image portion are formed by any one of the steps 2-1) to 2-4). Patterned body.   The latent image pattern forming body according to any one of claims 1 to 4, wherein the first element and the second element are made of at least one of an image line or a pixel, or a combination thereof. .   A latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and a plurality of concave and / or convex first elements are arranged in a line on at least a part of a substrate. The first pattern and the second element having a color different from that of the first element are arranged in a plurality of lines, and the second pattern and the first element and the second element are different in color from each other. A third pattern is formed by arranging a plurality of third elements in a line. The first element includes a first latent image element, a second latent image element, and a background element. One latent image element, the second latent image element, and the background element are all different in phase and arranged at the same pitch, and the first latent image element, the second latent image element, and the background Among the elements, the second element overlaps one element, and a plurality of the third elements are arranged in the second elements. The first latent image element overlaps one of the first latent image element, the second latent image element, and the background element that do not overlap with each other and does not overlap the second element. When one of the second element and the third element overlaps, or the second element and the third element do not overlap, a first latent image portion is formed, and the second element When one of the second element and the third element overlaps the latent image element or the second element and the third element do not overlap, a second latent image portion is formed, When one of the second element and the third element overlaps a background element or the second element and the third element do not overlap, the first latent image portion and the second element A background portion common to the latent image portion is formed, and the first latent image element, the second latent image element, and the back portion are formed. Among the elements, the first latent image portion and the second latent image portion have different colors due to a difference in color between the second element and the third element overlapping each other. The latent image pattern is formed by the first latent image portion and the plurality of second latent image portions, and when the substrate is tilted and observed, a plurality of the first latent image portions are caused by the difference in color. And the plurality of second latent image portions are observed in different colors, and the pattern of the latent image pattern is observed by one of the plurality of first latent image portions or the plurality of second latent image portions, On the other hand, the background of the pattern of the latent image pattern is observed. The relationship between the first latent image element, the second latent image element, the background element, the second element, and the third element is as follows:
3-1) One of the second element and the third element overlaps the first latent image element, and the second element and the third element overlap the second latent image element. Of the elements, the remaining elements that do not overlap the first latent image element overlap, the background element does not overlap the second element and the third element, or
3-2) One of the second element and the third element overlaps with the first latent image element, and the second element and the third element overlap with the second latent image element. Without overlapping, the background element overlaps the remaining elements of the second element and the third element that do not overlap the first latent image element, or
3-3) Among the second element and the third element, the second latent image element does not overlap the second latent image element without overlapping the second element and the third element. One of the two, the background element overlaps the second element and the third element, the remaining elements that do not overlap the second latent image element,
The latent image according to claim 6, wherein the first latent image portion, the second latent image portion, and the background portion are formed by any one of the steps 3-1) to 3-3). Image pattern forming body.   A latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and a plurality of concave and / or convex first elements are arranged in a line on at least a part of a substrate. The first pattern and the second element having a color different from that of the first element are arranged in a plurality of lines, and the second pattern and the first element and the second element are different in color from each other. A third pattern is formed by arranging a plurality of third elements in a line. The first element includes a first latent image element, a second latent image element, and a background element. One latent image element, the second latent image element, and the background element are all different in phase and are arranged at the same pitch, and the second element includes the first latent image element, the second latent image element, and the second latent image element. Among the latent image elements and the background elements, two elements overlap with different area ratios, and a plurality of the third elements are arranged. At least the remaining one of the first latent image element, the second latent image element, and the background element that does not overlap the second element and the second element does not overlap A first latent image portion is formed by overlapping one or both of the second element and the third element on the first latent image element, and the second latent image element includes the first latent image element. One or both of the second element and the third element overlap to form a second latent image portion, and one or both of the second element and the third element are formed on the background element. By overlapping both, a background portion common to the first latent image portion and the second latent image portion is formed, and the second latent image element overlaps the first latent image element and the second latent image element. The color difference between the element and the third element or before overlapping the first latent image element and the second latent image element Due to the difference in the area ratio of the second element, the first latent image portion and the second latent image portion have different colors or different densities, and a plurality of the first latent image portions and a plurality of the plurality of the latent image portions When the latent image pattern is formed by the second latent image portion and the substrate is tilted and observed, a plurality of the first latent image portions and a plurality of the second latent images are caused by the color difference or the area ratio difference. The latent image portions are observed in different colors or densities, and the pattern of the latent image pattern is observed by one of the plurality of first latent image portions or the plurality of second latent image portions, and the other, A latent image pattern formed body in which a background of a latent image pattern is observed. The relationship between the first latent image element, the second latent image element, the background element, the second element, and the third element is as follows:
4-1) The second latent image element overlaps the second latent image element, and the second latent image element has an area ratio different from the area ratio of the second element overlapping the first latent image element. The second element overlaps, the background element overlaps the third element, or
4-2) The third element overlaps the first latent image element, the second element overlaps the second latent image element, and the background element overlaps the second latent image element The second element overlaps with an area ratio different from the area ratio of the second element, or
4-3) The second element overlaps the first latent image element, the third element overlaps the second latent image element, and the background element overlaps the first latent image element The second element overlaps with an area ratio different from the area ratio of the second element;
9. The latent image according to claim 8, wherein the first background portion, the second background portion, and the latent image portion are formed by any one of the steps 4-1) to 4-3). Patterned body.   The third element overlaps one element of the two elements of the first latent image element, the second latent image element, and the background element that the second element overlaps. Item 10. The latent image pattern formed body according to Item 9.   A latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and a plurality of concave and / or convex first elements are arranged in a line on at least a part of a substrate. The first pattern and the second element having a color different from that of the first element are arranged in a plurality of lines, and the second pattern and the first element and the second element are different in color from each other. A third pattern in which a plurality of third elements are arranged in a line is formed, and the first element includes a latent image element, a first background element, and a second background element, and the latent image The first background element and the second background element are all out of phase and arranged at the same pitch, and the latent image element, the first background element, and the second background element , The second element overlaps one element, and a plurality of the third elements are arranged in the second Overlapping one of the latent image element, the first background element and the second background element that do not overlap with each other and the second element does not overlap, When one of the second element and the third element overlaps or the second element and the third element do not overlap, a first background portion is formed, and the second background element When one of the second element and the third element overlaps or the second element and the third element do not overlap, a second background is formed, and the latent image element One of the second element and the third element overlaps or the second element and the third element do not overlap so that they are common to the first background part and the second background part. A latent image portion is formed, the latent image element, the first background element and the second back Among the elements, the first background portion and the second background portion have different colors due to a color difference between the second element and the third element that overlap each other. The latent image pattern is formed by a background portion and the second background portion, and when the substrate is tilted and observed, the first background portion and the second background portion are different colors due to the difference in color. The latent image pattern is observed by one of the first background part or the second background part, and the background of the latent image pattern is observed by the other. Latent image pattern forming body. The relationship between the first background element, the second background element, the latent image element, the second element, and the third element is:
5-1) One of the second element and the third element overlaps the latent image element, and the second background element and the third element overlap the first background element, The remaining elements that do not overlap the latent image element overlap, the second background element does not overlap the second element and the third element, or
5-2) One of the second element and the third element overlaps the latent image element, and the second element and the third element do not overlap the first background element. , The second background element is overlapped with the remaining elements of the second element and the third element that do not overlap the latent image element, or
5-3) One of the second element and the third element overlaps the first background element without the second element and the third element overlapping the latent image element. , The second background element is overlapped with the remaining elements of the second element and the third element that do not overlap the first background element,
12. The latent image according to claim 11, wherein the first background portion, the second background portion, and the latent image portion are formed by any one of the steps 5-1) to 5-3). Patterned body.   A latent image pattern formed body in which a latent image pattern is observed when observed at an angle, and a plurality of concave and / or convex first elements are arranged in a line on at least a part of a substrate. The first pattern and the second element having a color different from that of the first element are arranged in a plurality of lines, and the second pattern and the first element and the second element are different in color from each other. A third pattern in which a plurality of third elements are arranged in a line is formed, and the first element includes a latent image element, a first background element, and a second background element, and the latent image Elements, the first background element and the second background element are all out of phase and arranged at the same pitch, the second element comprising the latent image element, the first background element and the Among the second background elements, two elements overlap with different area ratios, and the third element is arranged in a plurality. At least overlapping one of the latent image element, the first background element, and the second background element that do not overlap the second element and the second element does not overlap The first background portion is formed by overlapping one or both of the second element and the third element on the first background element, and the second element is formed on the second background element. And one or both of the third element and the third element overlap to form a second background portion, and one or both of the second element and the third element overlap the latent image element. A latent image portion common to the first background portion and the second background portion is formed by the first background element, the second element overlapping the second background element, and the third element. Color difference or before overlapping the first background element and the second background element Due to the difference in the area ratio of the second element, the first background portion and the second background portion have different colors or different densities, and the first background portion and the second background portion When a latent image pattern is formed and the substrate is tilted and observed, the first background portion and the second background portion are observed in different colors or densities due to the difference in color or the difference in area ratio, The latent image pattern is formed by observing the pattern of the latent image pattern by one of the first background portion or the second background portion and observing the background of the pattern of the latent image pattern by the other. body. The relationship between the first background element, the second background element, the latent image element, the second element, and the third element is:
6-1) The second background element overlaps the first background element, and the second background element overlaps the first background element with an area ratio different from the area ratio of the second element. Two elements overlap, the latent image element overlaps the third element, or
6-2) The second element overlaps the second background element, the second element overlaps the second background element, and the third element overlaps the first background element. The second element overlaps with an area ratio different from the area ratio of the element of
6-3) The second element overlaps the first background element, the second element overlaps the second background element, and the second image element overlaps the first background element. The second element overlaps with an area ratio different from the element area ratio of
The latent image according to claim 13, wherein the first background portion, the second background portion, and the latent image portion are formed by any one of the steps (6-1) to (6-3). Patterned body.   The third element overlaps one element of the two elements of the latent image element, the first background element, and the second background element that overlap the second element. 14. The latent image pattern formed body according to 14.   The latent image element in the first background portion and the latent image element in the second background portion are images with different designs, 15. The latent image pattern formed body according to 15.   The said 1st element, the said 2nd element, and the said 3rd element consist of at least one of a drawing line or a pixel, or its combination, The one of Claims 6 thru | or 16 characterized by the above-mentioned. Latent image pattern formed body.

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