JP2002154262A - Securities - Google Patents

Abstract

(57) [Summary] [Problem] It is impossible or difficult to judge authenticity in a normal state, and it can be easily performed without using special equipment, and a countermeasure for preventing forgery that does not increase production cost is provided. In providing securities. A latent image pattern such as characters and numerals and / or a peripheral portion of the pattern are formed on a surface of a base material by line-like unevenness by coining with a pitch width of 0.2 to 1 mm. Thus, the securities 1 are provided with line-shaped unevenness substantially perpendicular to the line-shaped unevenness forming the latent image pattern 10 in the peripheral portion 20 of the latent image pattern.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to securities which require countermeasures for counterfeiting, and more particularly, to those which have been precisely restored and forged using a color copier, a personal computer printer, or printing. It relates to securities that can be verified.

[0002]

2. Description of the Related Art In recent years, copying technology, especially color copiers and personal computer printers, has made remarkable progress in terms of function, and utilizing these copying technologies, paper money, stock certificates,
There have been many problems in which printed materials such as bonds, gift certificates, lotteries and other securities having a monetary value are copied and abused frequently.

In view of these problems, counterfeiting prevention techniques utilizing the characteristics of copying machines have been developed in response to these problems. For example, this type of anti-counterfeiting means uses a colorant ink that has a sharp peak in the spectral reflection curve, prints the image, and reproduces a different color tone by color copying the image. A method of making the original image unreproducible by providing halftone dots of a size less than the limit and combining these halftone dots with halftone dots of a size that can be By changing part of the scanning direction of the copier to a direction that does not overlap with the scanning direction, an image is formed in which only the lines of lines in different directions appear floating during copying, and an image combining dot and lines, Some of them were reproduced by emphasizing the difference between halftone dots and lines when they were copied, and all of them could easily be distinguished between true and false.

Furthermore, micro-characters are provided below the resolution of the copier, and the micro-characters are crushed during copying, making it difficult to completely reproduce the characters. In addition, at least a part of the printed image is made of magnetic ink. Since the magnetic ink part is not reproduced in the copy, it is possible to determine the authenticity by detecting the presence or absence of this magnetic component. In a method that cannot be seen from a normal viewing direction and cannot be reproduced by a copying machine, when the printed matter is tilted and viewed, the raised shadow of the ink (transparent varnish) emerges as characters and becomes visible. Alternatively, by providing an image made of ink that causes a change in observed color (color shift) in accordance with the viewing angle of the printed matter,
By providing an image made of black ink that has no absorption in the infrared region, which cannot be reproduced in the copy, and by detecting the presence or absence of infrared absorption in the black part of the copy, it is possible to determine the authenticity of the image. In some cases, for example, characters, images, designs, and the like made of special inks are used to determine whether they are authentic based on whether or not they are detected.

However, improvement in resolution and the like due to recent advances in color copiers and the like has made it possible to reproduce resolution and hue, which have been difficult in the past. The problem of disappearing has arisen. In addition, when magnetic ink which is a special ink is used, there is a disadvantage that the authenticity cannot be determined without using a measuring unit having a magnetic head and a magnetic sensor. In the method of forming line-shaped latent image character patterns, intaglio printing with poor production capacity and the need for expensive intaglio ink increase the production cost, and uneven line-shaped latent image characters have poor friction resistance. There was a problem.

On the other hand, as a means for preventing forgery, a method of performing forgery prevention on paper for securities or a method of providing a thread on a part of paper as forgery prevention paper, not by the above-described printing or the like. and so on. For example, as proposed in Japanese Utility Model Laid-Open No. 58-168754,
There is a proposal that a bright plate such as aluminum foil or the like having a prominent metallic color is provided on the upper surface of the base paper, and a character pattern is provided on the surface of the bright plate to make the paper uncopyable by a copying machine. Further, as disclosed in Japanese Patent Application Laid-Open No. 7-56377, a pearl pigment-coated paper is formed by applying a coating liquid mainly composed of a pearl pigment and a binder, and a countermeasure for preventing forgery is provided by providing the pearl pigment-coated paper with a thread. There is a blank sheet of paper.

[0007]

However, the improvement of image resolution and color reproducibility due to the progress of copiers and color copiers has not been improved even in the case of paper on which the above-described countermeasures have been taken. Can reproduce images and colors, which have been considered difficult, and thus the effect of the above-described forgery prevention technology has been lost.

The present invention has been made to solve the problems of the prior art, and it is an object of the present invention to provide a color copier and securities which are finely restored and forged by a printing method.
It is impossible or difficult to judge the authenticity under normal conditions, it can be easily and reliably performed without using special equipment, and securities that have been subjected to counterfeit prevention measures that do not increase production costs To provide.

[0009]

In order to achieve the above object in the present invention, according to the first aspect of the present invention, a latent image pattern and / or a peripheral portion of the latent image pattern are formed on a surface of a substrate. And securities formed of line-like irregularities by coining with a pitch width of 0.2 to 1 mm.

According to the first aspect of the present invention, the latent image pattern and / or the peripheral portion of the latent image pattern is formed on the surface of the base material with line-like irregularities having a pitch width of 0.2 to 1 mm. Therefore, the true or false judgment is invisible or difficult under normal conditions, and when the substrate is tilted and viewed from one direction, it appears as a visible pattern and appears to be floating, or its surroundings have line-shaped irregularities. As it appears as a shadow, it can be easily and reliably viewed without using special equipment, and the processing speed is fast and simple stamping is applied,
Production costs are not increased, and securities with counterfeit prevention measures that are difficult to forge even with sophisticated color copiers can be provided. If the pitch width of the line-shaped unevenness is less than 0.2 mm, the shadow of the line-shaped unevenness is difficult to be seen even when inclined, and if it exceeds 1 mm, it is visible even in a normal state depending on the depth of the unevenness. It is not preferable because it becomes possible.

Further, in the invention according to claim 2, the latent image pattern is formed of securities, such as characters, numerals or marks.

According to the second aspect of the present invention, by forming the latent image pattern composed of line-shaped irregularities as characters, numbers, logo marks, or the like, it is possible to obtain securities whose legitimacy can be easily recognized.

Further, in the invention according to claim 3, the peripheral portion of the latent image pattern is provided with line-shaped irregularities substantially perpendicular to the line-shaped irregularities forming the latent image pattern. The securities described in claim 1 or 2 described above.

According to the third aspect of the present invention, the latent image pattern is visually recognized by providing the line-shaped unevenness substantially perpendicular to the line-shaped unevenness forming the latent image pattern around the latent image pattern. It is possible to perform the authenticity judgment in two directions (the direction in which the shadow of the line-shaped unevenness of the latent image pattern is visible and the direction in which the shadow of the line-shaped unevenness around the latent image pattern is visible). We can provide securities that make it easier.

The above-mentioned parallel lines are not halftone dots, but a collection of innumerable straight lines representing the intermediate density. The straight lines are arranged in parallel at equal intervals (printing dictionary: edited by The Printing Society of Japan). .

[0016]

Embodiments of the present invention will be described below with reference to the drawings. The securities of the present invention are shown in FIG.
As shown in the enlarged top view of FIG.
Are securities (1) in which a T-shaped latent image pattern (10) is formed with horizontal line-shaped irregularities having a pitch width (W) of 0.2 to 1 mm on the surface of the (1).

With respect to the securities (1) obtained above,
Although the T-shaped latent image pattern (10) is not visible at all in the vicinity from directly above, as shown in FIG. Looking at it,
Since the shadow is formed in the area of the T-shaped latent image pattern (10), it becomes darker than the other areas, and the T-shaped latent image pattern (10) can be easily recognized.

The securities of the present invention are shown in FIG.
As shown in the enlarged top view of FIG. 1, for example, the peripheral portion (20) of the latent image pattern excluding the T-shaped latent image pattern (10) on the surface of the base material (30) has a pitch width (W) 0. 0.2-1
It is securities (1) formed by horizontal parallel-line unevenness of mm.

With respect to the securities (1) obtained above,
Although the T-shaped latent image pattern (10) cannot be seen at all from the vicinity directly above, as shown in FIG. 1 (b), the securities (1) are obliquely viewed from above (Q). Looking at it,
Except for the T-shaped latent image pattern (10), a shadow is formed in the area around the latent image pattern (20), so that it appears darker than other areas, and the T-shaped latent image The periphery (20) of the pattern (10) can be visually recognized, that is, the latent image pattern (10) can be easily recognized as an inverted pattern.

In the above securities (1), the latent image pattern (10) in the shape of the letter T or the peripheral portion (20) of the latent image pattern is formed as horizontal line-shaped unevenness. The angle may be rotated by 45 ° left and right, but it is generally preferable to set the angle horizontally or vertically from the viewpoint of easy recognition.

Further, the securities of the present invention are shown in FIG.
FIG. 1 is an enlarged top view of FIG.
As shown in (b), for example, a latent image pattern (10) in the form of a letter T is formed on the surface of the base material (30) with horizontal line-shaped unevenness having a pitch width (W) of 0.2 to 1 mm. A pitch width (W) is provided around the latent image pattern (10).
Securities (1) in which line-shaped irregularities perpendicular to the T-shaped latent image pattern (10) of 0.2 to 1 mm are formed can also be used.

With respect to the securities (1) obtained above,
As shown in FIG. 2 (b), from the vicinity directly above (O),
The region of the latent image pattern (10) in the shape of T and its peripheral portion (2)
0) cannot be identified, and when viewed obliquely from above (P), the peripheral portion (2) of the T-shaped latent image pattern (10)
0) Since a shadow is formed in the area, the latent image pattern (1
0) It looks darker than the region, and the T-shaped latent image pattern (10) can be visually recognized as if it were raised. Further, as shown in FIG. 2A, when the securities (1) are viewed obliquely from the upper side (Q), a latent image pattern (10) in the shape of a letter T has a shadow. The latent image pattern (10) of the letter "T" appears darker than the area (20) around the latent image pattern (10) of the letter "T".
Are easily visible.

The latent image pattern (10) formed of horizontal line-shaped irregularities is regarded as vertical line-shaped irregularities, and the peripheral portion (20) of the latent image pattern formed of the vertical line-shaped irregularities is formed of horizontal lines. The shape may be irregular. Further, the horizontal linear unevenness and the vertical linear unevenness may be an angle rotated by 45 ° left and right with respect to each other, but a combination of horizontal and vertical is more preferable from the viewpoint of easy recognition.

The pitch width (W) of the line-shaped unevenness formed on the latent image pattern (10) of the securities (1) and its peripheral portion (20) is usually 0.2 to 1 mm. In the state, visual recognition is impossible or difficult, and it is preferable to perform visual recognition easily and reliably without using special equipment.
If it is less than 3 mm, even if it is inclined, the shadow of the line-shaped unevenness becomes difficult to see. Note that the relationship between the pitch width (W) and the depth of the linear irregularities is generally pitch width / depth ≒ 10.

Further, a latent image pattern (1
By setting 0) as a character, a number, a logo mark, or the like related to the securities, the authenticity of the securities can be more easily recognized. For example, it can be the logo of the issuer who issues the securities, or the company name of English characters or katakana. Further, a pattern or character is printed on the latent image pattern (10), or a latent image pattern (10) is formed on a printed layer of the pattern or character, and usually the latent image pattern (1) is formed.
0) is difficult to see, or conversely, by forming a latent image pattern (10) consisting of line-like irregularities on a glossy silver or black solid printing layer or a transfer foil or the like,
When the securities (1) are tilted and viewed from one direction, the shadows of the line-shaped irregularities can be more clearly recognized as a visible image pattern.

The above-mentioned line-shaped unevenness is formed by coining. For example, the embossed cylinder in which the reverse pattern of the latent image pattern (10) of the line-shaped unevenness and its peripheral portion (20) is engraved is formed. It is obtained by passing through a web- or sheet-like security paper as a substrate (30) between the cylinders and pressing it under pressure. When the base material is plastics, a heating step and a cooling step are generally required.

The formation of the latent image pattern (10) consisting of line-like irregularities is performed by forming the paper on the pure security paper itself and treating the paper with watermarks or the like to prevent forgery. It is also possible to obtain securities that have been subjected to counterfeiting prevention measures by forming the latent image pattern (10) consisting of the above-mentioned line-shaped irregularities on securities that have been printed or the like. .

As the base material (1) constituting the securities (1) of the present invention, for example, special security paper used for stock certificates, etc., high-quality paper used for gift certificates, lotteries, etc., coated paper, art paper, etc. And polyvinyl chloride, polyethylene terephthalate, and the like constituting cards, and further, a metal foil laminated on paper or plastic.

As described above, the latent image pattern (10) composed of line-shaped irregularities applied to the securities of the present invention is formed by:
The present invention can be applied not only to these securities, but also to, for example, packages (packaging bodies), arts, and their special printed matter that emphasize designability as countermeasures for forgery.

[0030]

As described above, the present invention has the following effects. That is, a pitch width of 0.
Since the latent image pattern and / or its peripheral portion is formed by the line-shaped unevenness of 2 to 1 mm, the authenticity of the latent image pattern is determined by:
Under normal conditions, it is invisible or difficult to see, and when viewed from one direction with the substrate tilted, the shadow of the line-shaped irregularities appears as a visible pattern and appears easily and reliably without using special equipment The production speed is high and the stamping process is simple, so the production cost does not increase. it can.

Further, the latent image pattern is visually recognized from two directions by forming the line-shaped unevenness substantially perpendicular to the line-shaped unevenness forming the latent image pattern around the latent image pattern. By doing so, it is possible to provide securities that can be easily determined to be authentic.

Therefore, the present invention exerts an excellent practical effect as securities that can be easily verified for authenticity even if they are precisely restored and forged by a color copying machine, printing, or the like.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of securities of the present invention, and FIG. 1 (a) is a top view showing one example thereof;
(B) is a top view showing another example.

FIGS. 2A and 2B are explanatory views showing another embodiment of the securities of the present invention, wherein FIG. 2A is a top view showing one example thereof, and FIG. It is explanatory drawing which shows BB surface cross section.

[Explanation of symbols]

 1 ‥‥ Securities 10 ‥‥ Latent image pattern 20 ‥‥ Peripheral portion of latent image pattern 30 ‥‥ Base material O ‥‥ Diagonally upward direction P ‥‥ Directly upward direction Q ‥‥ Diagonally upward direction in front

 ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hanmori Kitahara 1-5-1, Taito, Taito-ku, Tokyo Letterpress Printing Co., Ltd. F-term (reference) 2C005 HA02 HA04 HA19 HB10 HB12 JB25 KA02 KA03 KA05 2H113 AA06 BA28 BB02 BB07 BB22 CA37 CA39 CA44

Claims (3)

[Claims] A latent image pattern and / or a peripheral portion of the latent image pattern have a pitch width of 0.2 to 1 mm on a surface of a substrate.
Securities characterized by being formed with line-shaped irregularities by stamping. 2. The securities according to claim 1, wherein said latent image pattern is composed of characters, numbers or marks. 3. The latent image pattern according to claim 1, wherein a peripheral portion of the latent image pattern is provided with linear irregularities substantially perpendicular to the linear irregularities forming the latent image pattern. Securities.