JP4701730B2 - Copy check printed matter - Google Patents

Description

  The present invention relates to a forgery-preventing printed matter by a copying machine, and in particular, it is applied to a printed matter having a need to make counterfeiting impossible by a color copying machine, for example, securities such as stock certificates, certificates, cards, etc. This is related to the copy check printed material.

  In recent years, as the accuracy of copying machines, particularly color copying machines, has been increasing, the use of such machines has facilitated counterfeiting of securities such as stock certificates, bonds, and gift certificates, and various certificates.

  As a means of preventing forgery by copying, there is a method of making securities difficult to copy or pasting those difficult to copy on securities etc. as proof of authenticity. .

  As a method for making the former difficult to copy, for example, a method of making a printed matter of fine characters and patterns that cannot be resolved by an optical device such as a copying machine, or a method of printing with metallic glossy ink or fluorescent ink is known. .

  However, in these methods, there is a possibility that it is difficult for a user who does not know the real thing to distinguish the real and the fake, and there is a problem that the use of the fake is continued.

  As a method for attaching the latter, which is difficult to copy or duplicate, for example, as a typical example, a method using a hologram (transferring a hologram foil) is known.

  However, this hologram is difficult to counterfeit by copying and has a high anti-counterfeit effect. However, the production of the hologram has a drawback in that the cost is increased due to advanced technology and expensive equipment.

  Therefore, there is a printed matter in which characters, patterns, etc. appear when copying with a copying machine as one of the copy prevention methods that makes it easy for the user to distinguish between genuine and fake and recognize it, and also from the viewpoint of cost. As shown in FIG. 7A, the check latent image portion (30) made up of characters, patterns and the like and the non-latent image portion (40) as the background thereof have the same dot area ratio and the dot size ( There is a copy prevention printed matter (4) in which the number of lines is different.

  This is because, if the halftone dot area ratio in the genuine anti-copying printed matter (4) is the same, the halftone dot size is small (the halftone dot density is large) and the check latent image portion (30) is large and the halftone dot size is large ( The non-latent image portion (40) having a small halftone dot density is indistinguishable, and when this is copied, as shown in FIG. Copying appears to appear as a low-resolution latent image portion (30) with a small halftone dot size becomes smaller and thinner than the non-latent image portion (40) as a background and becomes thinner. It becomes a thing (4a). By setting the pattern of the check latent image portion (30) to “false”, “VOID”, or “COPY”, it is possible to clearly recognize that it is a fake, and to exhibit a forgery prevention effect. .

However, in the copy-prevented printed matter (4) by the copy-preventing method due to the difference in halftone dot size, there is a problem that the check latent image portion (30) becomes easy to visually recognize when the eyes become accustomed. Since the latent image portion (30) requires an area of a certain size, if the area is increased, the latent image portion (30) becomes easier to visually recognize, and those who know these techniques can also forge. There was a problem.

  In addition, in another copy prevention method that makes it easy for the user to distinguish between real and fake and recognize it, both the background non-latent image portion and the check latent image portion made up of characters etc. are formed by lines. The line is composed of horizontal and vertical (VH) relationships, and the check latent image part is expressed by two dividing lines (splits) different from the non-latent image part. There is a print that is said.

  When a printed material called the VH split line method is copied by a copying machine (color copying machine), the non-latent image portion as the background is different from the actual color (copied material) of the printing color (turbid color system). The check latent image portion, which is expressed in black (black) color and becomes a hidden pattern such as letters, is reproduced with a color close to the actual printing color, and is therefore a fake by copying (color copy)? There is a printed material that is relatively easy to determine whether it is genuine (see, for example, Patent Document 1).

  In addition, a straight line or a curve is arranged in one of the non-latent image portion and the check latent image portion, and an appropriate micro character is arranged on the other, but the micro character is always arranged on one extension line of the straight line or the curve. However, there is a drawback that the effect as a hidden pattern is slightly inferior (see, for example, Patent Document 2).

The above prior art documents are shown below.
JP 2003-237 211 A U.S. Pat. No. 4,891,666

  However, in the prior art of the printed matter, which is said to be the former VH split line method, the non-latent image part as the background and the line forming the check latent image part made up of characters intersect, For this reason, the boundary between the non-latent image portion that forms the background and the constraining latent image portion that is a hidden pattern made up of characters, etc., is easily noticeable, and it is necessary to correct the details at the intersection (with the original etc.) (details) Is very difficult to correct), and the check latent image part is expressed as a square aggregate, so the curved part must be expressed in a staircase, making the original plate cumbersome (difficult) and costly There was a point.

  Further, in the latter, the technique of the printed matter which is said to be the VH split line method, there is a problem in the action of the hidden pattern (it is difficult to find in the original and cannot be found in the copy product).

  The present invention solves the problems of the prior art, and the problem is that even a user who does not know the real thing can easily distinguish and recognize the real and the fake (copy). There is no problem of high cost due to advanced technology and equipment like the method of pasting the hologram, and the latent image of the concealed image that is a real hidden pattern is difficult to see with the naked eye and is complicated to manufacture (original production) It is an object of the present invention to provide a forgery-preventing printed matter that makes it impossible to forge by copying with a copying machine, in particular a color copying machine, that is free from (difficult) and costs associated with it.

In order to achieve the above object in the present invention, first, in the invention of claim 1, a non-latent image portion having a line pattern having a predetermined width and pitch and a non-latent image portion formed on the substrate are formed. In the copy check printed matter comprising a check latent image portion that is partially formed in an arbitrary region of the line pattern and that portion is a hidden pattern that is not the line pattern, the check latent image portion is S-shape as rune letters for two sets of line patterns forming a latent image portion, its reverse S-shape, alphabetical Z-shape, N-shape, reverse Z-shape, or inverse N Any one of the letter-shaped patterns is an element, and an angle formed by adjacent lines among the lines forming the element is 90 ° or more, and a plurality of the elements are arranged, and the non-latent image The optical copy density is the same or nearly the same optical density as the It is obtained by the check printed material.

  The Rune script mentioned above is a kind of ancient script, which is a variant developed from Greek script.

  According to a second aspect of the present invention, the printing color of the line pattern forming the non-latent image portion and the pattern forming the check latent image portion is any of deep green, red, blue or purple. The copy check printed matter according to claim 1, wherein the copy check printed matter is provided.

  According to a third aspect of the present invention, the density of the check latent image portion and the non-latent image portion satisfies a range of 15 to 25%. This is a copy check print.

  According to a fourth aspect of the present invention, the line width of the line pattern that forms the non-latent image portion satisfies a range of 0.06 to 0.1 mm. Or a copy check printed matter described in item 1.

According to a fifth aspect of the present invention, there are at least seven rune-character S-shaped, reverse S-shaped, alphabetic Z-shaped, N-shaped, reverse Any of the Z-shaped or inverted N-shaped patterns is an element, and among the lines forming the element, the angle formed by the adjacent lines is 90 ° or more, and the line pattern 3 set 6 S-shape mentioned three rows runes exerted on duty, the inverted S-shape, Z-shape referred to in the alphabet, N-shaped, one of the patterns of reverse Z-shaped, or inverse N-shape 5. The copy check printed matter according to claim 1, further comprising: an element having an angle of 90 ° or more formed by adjacent lines among the lines forming the element. It is a thing.

  Further, in the invention of claim 6, on the line pattern forming the non-latent image portion and the pattern forming the check latent image portion, a grainy white pattern or a continuous pattern of letters, numbers, symbols and patterns The copy check printed matter according to any one of claims 1 to 5, wherein the copy check printed matter is provided.

  Furthermore, in the invention of claim 7, the copy check printed matter according to any one of claims 1 to 5, wherein the pattern is switched between the non-latent image portion and the check latent image portion. It is a thing.

  Since this invention is the above structure, there exist the following effects.

That is, according to the first aspect of the present invention, a non-latent image portion having a line pattern having a predetermined width and pitch is formed on a substrate, and a portion of an arbitrary area of the line pattern forming the non-latent image portion. In the copy check printed matter, the check latent image portion is a line forming a non-latent image portion. The elements are S-shaped as runes for two pairs of patterns, its reverse S-shaped, alphabetic Z-shaped, N-shaped, inverted Z-shaped, or inverted N-shaped patterns The angle between adjacent lines among the lines forming the element is 90 ° or more, and a plurality of the elements are arranged side by side. The cost of making the original plate due to the processing at the intersection and the curved part does not become stepped. The line pattern that forms a non-latent image portion is reduced and is reproduced, especially color copy, is expressed in black (black) color, and a plurality of rune characters that form a check latent image portion, and vice versa. S-shaped or alphabetic Z-shaped, N-shaped, inverted Z-shaped, or inverted N-shaped elements, and the angle formed by adjacent lines among the lines forming these elements Elements with an angle of 90 ° or more will be reproduced in colors close to the pre-copy color and will be lifted and visually recognized. it can.

  In addition, since the check latent image portion that is a hidden pattern is provided to have the same or almost the same optical density as the non-latent image portion that is the background, it is difficult to visually recognize the presence of the check latent image portion. It can be a copy check print.

  According to the second aspect of the present invention, the printing color of the line pattern that forms the non-latent image portion and the pattern that forms the check latent image portion is dark green, red, or purple. By copying, especially color copying, yellow, magenta, and cyan that make up deep green, red, blue, or purple printing colors are reproduced in the thin line pattern that forms the background non-latent image portion. On the other hand, in the check latent image portion that is a hidden pattern, it is difficult to be done, and in the check latent image portion that is a hidden pattern, a plurality of S-shaped runes that are arranged in a plurality of rows, its inverse S-shape, or Z-shaped, N-shaped, inverted Z-shaped, or inverted N-shaped in alphabetical letters, and the angle between adjacent lines among these lines is 90 ° or more. Because a pattern can be seen as one surface It will be reproduced in a color close to printing color before copying.

  Therefore, a dark green, red, blue or violet check latent image portion will appear in the non-latent image portion which is the background of the black (black) color system, and will be visible. This can be a copy check print that can be easily recognized.

  Furthermore, compared to the conventional VH split line system, a red-based check latent image portion can be provided, and the degree of freedom in design can be improved.

  According to the third aspect of the present invention, the density of the check latent image portion and the non-latent image portion is set to satisfy the range of 15 to 25%, so that the non-latent image is more copied. The thin line pattern that forms the portion is reproduced darker than before copying, and a plurality of rows that form the check latent image portion are arranged in multiple rows. Z-shaped, N-shaped, inverted Z-shaped, or inverted N-shaped elements as defined in the above, and the angle formed by adjacent lines among these lines is 90 ° or more. Since the pattern is reproduced close to the density before copying, the pattern is more lifted and visually recognized. In addition, by making the density of both in the range of 15 to 25%, that is, relatively light, it is possible to print designs, characters (background patterns), etc. on these check latent image portions and non-latent image portions to improve the design. Can also contribute.

  If the density of the check latent image portion and the non-latent image portion is less than 15%, the entire image becomes lighter. Therefore, even if copying (color copying) is performed, the difference between the check latent image portion and the non-latent image portion is reduced. If the density of both exceeds 25%, the check latent image portion after copying melts into the non-latent image portion of the background, making it difficult to see the check latent image portion and further increasing the overall density. Even if a pattern, a character (background pattern), or the like is printed on the image portion and the non-latent image portion, they are not noticeable, which is not preferable in terms of design.

According to the invention of claim 4, the line width of the line pattern forming the non-latent image portion is
By satisfying the range of 0.06 to 0.1 mm, the line pattern that forms the non-latent image portion is difficult to be reproduced in yellow, magenta, and cyan when copying, especially color copying, and black (black). Reproduced in color, a plurality of runes that form a check latent image portion, S-shaped as a rune character, its reverse S-shape, or Z-shape, N-shape, or reverse Z-shape A pattern that is an N-shaped or inverted N-shaped element and the angle between adjacent lines among the lines forming these elements is 90 ° or more is reproduced with a color close to the printing color before copying and becomes more floating Therefore, it is possible to make a copy check printed matter that is easily visible.

  If the line width of the line pattern is less than 0.06 mm, the line pattern of the printed matter will not be reproducible (it will be difficult to reproduce), and conversely if it exceeds 0.1 mm, the copied line pattern will be Dark green, red, blue or violet yellow, magenta, and cyan are also reproduced, resulting in a color close to the printed color before copying, which is not preferable because it cannot be distinguished from the check latent image portion.

  According to the fifth aspect of the present invention, the area where the check latent image portion is formed has at least seven rune characters in the S shape, its reverse S shape, or the alphabet in the Z shape, N 3 elements, each of which is a letter-shaped, inverted-Z-shaped, or inverted-N-shaped element, in which the angle formed by adjacent lines among the lines forming these elements is 90 ° or more, and a set of three line patterns Three rows of Z-shaped, N-shaped, inverted Z-shaped, or inverted N-shaped, which are divided into minutes, and an angle formed by adjacent lines among these lines is 90 ° or more. By making it consist of a pattern, it is possible to obtain a copy check printed matter in which the check latent image portion after copying, in particular, color copy, appears more easily and becomes visible.

  The area constituting the check latent image portion is S-shaped as 7 runes, reverse S-shaped, or Z-shaped, N-shaped, inverted Z-shaped, or inverted N-shaped in alphabet. Elements that are adjacent to each other among the lines that make up these elements, and a pattern with an angle of 90 ° or more and three rows of runes, an inverted S-shape, or an alphabetical Z-shape N-shaped, inverted Z-shaped, or inverted N-shaped elements, and if the angle formed by adjacent lines among these elements is less than 90 °, the check latent image Even if the portion is too small to be copied, it is difficult to visually recognize it, and it is difficult to discriminate whether the copy is a real copy or a copy copy.

  According to the invention of claim 6 above, the grainy white pattern is formed on the line pattern forming the non-latent image portion serving as the background and the pattern group forming the check latent image portion serving as the hidden pattern. Alternatively, by providing a continuous pattern of letters, numbers, symbols, and patterns, it is possible to obtain a copy check printed matter in which the non-latent image portion and the check latent image portion before copying are less visible with the naked eye.

  Furthermore, according to the invention of claim 7, the pattern is interchanged between the non-latent image portion and the restraining latent image portion, thereby improving the degree of freedom in design and seeking forgery prevention. There is an effect that it is possible to provide a copy check print that can further expand the image.

  Therefore, the present invention provides excellent practical effects (especially by copying) in applications requiring prevention of counterfeiting such as various securities such as stock certificates, certificates, cards, etc., as printed matter that prevents copying, particularly color copying. (Forgery prevention and checking).

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a copy check printed matter (1) of the present invention and its enlarged plan view, and FIGS. 2 and 7 are plan views of other examples of the copy check printed matter (1) of the present invention. 3 and 4 are enlarged views of examples of the check latent image portion (10) constituting the copy check printed matter of the present invention. FIGS. 5 and 6 are copies of the copy check printed matter of the present invention ( 2) A plan view showing an example.

  In the present invention, for example, as shown in the plan view of FIG. 1A, a non-latent image portion (20) serving as a background and an arbitrary region of the non-latent image portion (20) have a hidden pattern (for example, “ This is a copy check printed matter (1) configured with a check latent image portion (10) to be COPY ").

  In the invention according to claim 1, for example, as shown in the plan view of FIG. 1A, a non-latent image portion (20) serving as a background is hidden on one surface of the base material (50). A copy check printed matter (1) composed of a check latent image portion (10) which is a pattern (in the drawing, there is a letter “COPY” but is made visible for explanation). As an enlarged view of a), as shown in the plan view of FIG. 1B, the non-latent image portion (20) is formed in a line pattern having a predetermined width (W) and pitch (P), The check latent image portion (10) in one area of the non-latent image portion (20) has a plurality of rune characters so as to cover two sets of line patterns forming the non-latent image portion (20). This is a copy check printed matter (1) in which the S-shaped pattern is formed in a plurality of rows.

  As a pattern for forming the check latent image portion (10), for example, as shown in an enlarged plan view of FIG. 3 (a), in addition to a plurality of rune S-shaped patterns (10a), for example, FIG. As shown to (b), it can also be set as the reverse S-shaped pattern (10b) called a rune character. Further, although not shown, a plurality of alphabetic Z-shaped patterns or inverted Z-shaped patterns, or an alphabetic N-shaped pattern or its inverted N-shaped pattern may be used.

  As described above, the elements of the pattern forming the check latent image portion (10) are Z-shaped, N-shaped, inverted Z-shaped, inverted N-shaped, or S-shaped rune. For example, as shown in FIG. 4, a pattern in which an angle (α) formed by adjacent lines among the lines forming the S-shaped pattern (10 a) referred to as a rune character is 90 ° or more is formed. More preferably, it is made up of only a straight line that does not include a curve, so that the effect of hiding the restraining latent image portion can be improved.

  As described above, when the angle (α) formed by adjacent lines is 90 ° or more, the shape of the element exhibits an elongated shape. Elements are arranged in a direction in which the approximate direction of the extension substantially intersects the direction of the lines of the line pattern (preferably in a direction substantially orthogonal).

  In the invention according to the second aspect, for example, as shown in FIG. 1A, a line pattern forming a non-latent image portion (20) and a pattern forming a check latent image portion (10) are printed. When the color is either deep green, red, or purple, when copying, especially color copying, in the thin line pattern that forms the non-latent image portion that becomes the background, dark green, red, The yellow, magenta, and cyan colors that make up either blue or violet printing colors are difficult to reproduce, and they are supplemented with black ink. On the other hand, it is a hidden latent image (COPY). In the part (10), an inverted N-shaped pattern in which a plurality of rows are arranged in a plurality of rows is regarded as one surface, so that it is expressed in a color close to the printing color before copying. Therefore, the dark green-based check latent image portion (10) emerges as “COPY” in the non-latent image portion (20), which is the background of the black (black) color system, and is clear even for users who do not know the real thing. Will be recognized as a copy.

The printing colors of the line pattern forming the non-latent image portion (20) and the pattern forming the check latent image portion (10) are as described above, and more preferably, the color saturation is low or the turbid color system And most preferably a turbid system with low saturation.

  In this way, when each printed pattern (1) is color-copied by making each pattern a turbid color system with low saturation, for example, as shown in the plan view of FIG. 5, the non-latent image portion (20 ), The yellow, magenta, and cyan that make up the turbid color are more difficult to be reproduced, so that it is expressed in black so as to supplement it, while the hidden pattern (COPY) In the check latent image portion (10), the S-shaped pattern (10a), which is a plurality of rune characters arranged in a plurality of rows, is captured as one surface, so that the color is close to the printing color before copying. It comes to be expressed. Therefore, the dark green-based check latent image portion (10) emerges as “COPY” in the non-latent image portion (20), which is the background of the black (black) color system, and is clear even for users who do not know the real thing. Is recognized as a copy (2).

  As a printing color of the line pattern forming the non-latent image portion (20) and the pattern forming the check latent image portion (10), it is impossible with the conventional VH split line method in addition to the dark green type. The effect as described above appears even in a red system, and the design can be widened.

  In the invention according to claim 3, for example, as shown in FIG. 1A, the densities of the restraining latent image portion (10) and the non-latent image portion (20) are substantially the same (for illustrative purposes, the restraining latent image). Part (10) "COPY" is darkened), and is made to satisfy the range of 15 to 25%. Furthermore, in the invention according to claim 4, it is shown in FIG. As described above, the line width (W) of the line pattern (20a) forming the non-latent image portion satisfies the range of 0.06 to 0.1 mm.

  The relationship between the appropriate density of the check latent image portion (10) and the non-latent image portion (20) and the line width (W) of the line pattern (20a) forming the non-latent image portion will be specifically described. For example, as shown in FIG. 3A, when the line width (W) of the line pattern (20a) forming the non-latent image portion (20) is 0.08 mm and the pitch (P) is 0.4 mm, The density is in the range of about 20 to 22%, the line width of the S-shaped pattern group (10a), which is a plurality of rune characters forming the check latent image portion, is 0.05 mm, and the vertical feed pitch (TP) is When the lateral feed pitch (YP) was 0.875 to 0.285 mm, the concentration was in the range of about 18 to 19%.

  As described above, when the density of the non-latent image portion (20) as the background is set slightly higher than the density of the check latent image portion (10) as a hidden pattern, the copied material after copying has a higher density difference and printing. A copy check print (1) having a large color difference and a high anti-counterfeit effect can be obtained.

  In the invention according to claim 5, for example, as shown in the enlarged view of FIG. 3A, the area for forming the check latent image portion (10) is at least seven S-shaped patterns (10 a). And three rows of inverted N-shaped patterns (10a) covering three sets and six sets of line patterns (20a).

  In this way, when this portion is copied, particularly color copied, by forming a check latent image portion (10) consisting of at least seven horizontally and vertically three inverted N-shaped patterns (10a), for example, As shown in the full-scale plan view of FIG. 6 (a), the minimum size of the restraining latent image portion (10) that emerges and can be visually recognized is shown.

Assuming that the check latent image portions (10) are S-shaped pattern groups (10a), which are 10 horizontally and 4 vertically rune characters, as shown in the plan view of the actual size in FIG. 6 (b), The check latent image portions (10) are further enlarged and floated to be easily recognized. Further, the check latent image portions (10) are horizontally arranged in 13 vertical S-shaped pattern groups (10a) represented by five runes. ), As shown in the full-scale plan view of FIG. 6 (c), the check latent image portion (10) becomes larger and is more easily visible.

  If the size of the check latent image portion (10) is less than the S-shaped pattern group (10a), which is seven horizontally and three vertically rune characters, it is too small to be visually recognized. It becomes difficult, and it is not preferable because it is impossible to discriminate whether it is genuine or copied.

  In the invention according to claim 6, for example, as shown in the plan view of FIG. 2 (a), the line pattern forming the non-latent image portion (20) as the background and the check latent image portion as the hidden pattern are formed. This is a copy check print (1) in which a grainy white pattern (22) is formed on the pattern forming (10), and is hidden by this grainy white pattern (22). The presence of the check latent image portion (10) to be a pattern is more difficult to visually recognize.

  Incidentally, when the copy check printed matter (1) having the grainy white pattern (22) is copied, as shown in the plan view of FIG. 2B, a non-latent image portion (20) as a background is formed. The copy (2) is provided with a grainy white pattern (22) in which the characters "COPY" in the check latent image portion (10) appear to emerge.

  Furthermore, in the invention according to claim 6, for example, as shown in the plan view of FIG. 7 (a), the line pattern that forms the background non-latent image portion (20) and the check latent image that becomes a hidden pattern are formed. A forgery-preventing printed matter (1) by a copying machine in which a continuous pattern (24) of characters is formed on a plurality of S-shaped patterns of rune characters forming a part (10). The background pattern consisting of the continuous pattern (24) of characters makes it difficult to visually recognize the presence of the check latent image portion (10) that becomes a hidden pattern.

  Incidentally, when the copy check printed matter (1) on which the copy-forgery-inhibited pattern consisting of the continuous pattern (24) of characters is copied, as shown in the plan view of FIG. 7B, the non-latent image portion (20) as the background is displayed. The copy (2) is provided with a copy-forgery-inhibited pattern consisting of a continuous pattern (24) of characters that makes it appear that the characters "COPY" in the check latent image portion (10) emerge.

  Further, in claim 7, for example, “COPY” which is the restraining latent image portion (10) shown in FIG. 1 is formed in a line pattern, and the non-latent image of the background portion formed in the line pattern It is also possible to replace the patterns so that the part (20) is an S-shaped pattern of runes.

  The continuous pattern (24) can be a number, a symbol, or a pattern (picture or the like) in addition to characters, and a design effect can be added by the continuous pattern (24).

  As described above, the copy check printed matter of the present invention can be used for securities such as stock certificates, bonds, gift certificates, gift cards, certificates such as seal registration cards, cards, other garbage disposal tickets, etc. It has a practical effect.

An example of the copy check printed matter of the present invention will be described, wherein (a) is a plan view thereof and (b) is a partially enlarged view of (a). The other example of the copy check printed matter of the present invention will be described, in which (a) is a plan view thereof and (b) is a plan view of a copy product of (a). FIG. 4 is a partially enlarged view of a copy check printed matter of the present invention, in which (a) shows an example of a pattern forming the check latent image portion, and (b) shows another pattern forming the check latent image portion. An example is shown. It is an enlarged view of an example of the pattern which forms the check latent image part which comprises the copy check printed matter of this invention. It is a top view showing an example of a copy of a copy check printed matter of the present invention. It is a top view showing an example of the copy check printed matter of the present invention, (a) is a copy in the case of the minimum size of the check latent image portion, (b) is 10 check latent image portions and 4 This is a copy in the case of rows, and (c) is a copy in the case of 13 check latent image portions and 5 rows. Another example of the copy check printed matter of the present invention will be described. (A) is a plan view thereof, and (b) is a plan view of the copy matter of (a). It is a top view showing an example of the conventional copy prevention printed matter, (a) is a real thing, (b) is a duplicate of (a).

Explanation of symbols

1 ... Copy check print 2 ... Copy copy print 4 Copy prevention print with different dot size 4a ... Copy prevention print 10 10 Check latent image part 10a Rune S-shaped Pattern 10b ... reverse S-shaped pattern of runes 20 ... non-latent image part 20a ... line pattern 30 ... check latent image part with small halftone dot size 40 ... non-latent image part with large halftone dot size 50 ... Base material P ... Pitch of line pattern W ... Line width of line pattern TP ... Vertical feed pitch of S-shaped pattern YP ... Horizontal feed pitch of S-shaped pattern α ... The angle formed by the lines of neighboring comrades

Claims (7)

A non-latent image portion having a line pattern having a predetermined width and pitch, and a part of an arbitrary region of the line pattern forming the non-latent image portion, and the portion is the line. In a copy check printed matter provided with a check latent image portion that is a hidden pattern that is not a pattern, the check latent image portion is a rune character that covers two sets of line patterns that form a non-latent image portion. S-shaped, the opposite S-shaped, Z-shaped means in alphabetical, N-shaped, reverse Z-shaped, or any of the pattern for the uplink N-shaped a component, next to one of the lines forming the said elements The angle between the lines of comrades is 90 ° or more, a plurality of the elements are arranged side by side, and are provided so as to have the same or almost the same optical density as the non-latent image portion. Copy check printed matter.   2. The printing color of the line pattern forming the non-latent image portion and the pattern forming the check latent image portion is any one of deep green, red, blue, or purple. A copy check printed matter.   The copy check printed matter according to any one of claims 1 to 2, wherein the density of the check latent image portion and the non-latent image portion satisfies a range of 15 to 25%.   4. The copy check printed matter according to claim 1, wherein a line width of a line pattern that forms the non-latent image portion satisfies a range of 0.06 to 0.1 mm. 5. The area for forming the check latent image portion is at least 7 rune-shaped S-shapes, its reverse S-shape, alphabetical Z-shape, N-shape, reverse-Z-shape, or reverse-N-shape. Any of these patterns is an element, and among the lines forming the element, the angle between adjacent lines is 90 ° or more, and three rows of three lines of three sets of line patterns. The element is an S-shape as a rune character, an inverted S-shape thereof, a Z-shape, an N-shape, an inverted Z-shape or an inverted N-shape as defined by the alphabet, and constitutes the element 5. The copy check printed matter according to claim 1, comprising an element having an angle of 90 ° or more formed by adjacent lines among the lines. 6.   On the line pattern forming the non-latent image portion and the pattern forming the check latent image portion, a grainy white pattern or a continuous pattern of letters, numbers, symbols and patterns is applied. The copy check printed matter according to any one of claims 1 to 5.   6. The copy check printed matter according to claim 1, wherein the pattern is switched between the non-latent image portion and the check latent image portion.