KR101260723B1 - Forgery prevention paper - Google Patents

Abstract

The present invention relates to an anti-counterfeiting paper, wherein the parallel lines 11 at regular intervals form a plurality of horizontal bands 11a and vertical bands 11b to form a horizontal band 11a and a vertical band 11b. A bottom background pattern (10) formed by alternately arranged in a grid; A latent image composed of a line 21 having one side arbitrarily dug and a plurality of grooves 21a formed therein, and a plurality of dots 22 formed along the length direction of the line 21 between the lines 21 and 21. The pattern 20 is used to print the background pattern and the printed line constituting the latent image pattern with special lines and dots so that the latent image pattern is not easily identified by the naked eye. It makes it difficult to manufacture papers, and the unauthorized manufacture of papers can be prevented from making unauthorized papers and forgery of documents, etc., and forgery of various currencies, securities, official documents and certificates. In addition to improving the prevention function and facilitating forgery discrimination, the degree of appearance of the background pattern and the latent image pattern formed on the paper varies depending on the temperature. To be a useful invention that has excellent special advantage of the anti-counterfeiting features.

Description

Forgery prevention paper

The present invention relates to an anti-counterfeiting paper, and more particularly, a latent image occurs during copying for counterfeiting of money, securities, official documents and certificates, so that the authenticity of the paper can be easily checked while printing the paper. The present invention relates to an anti-counterfeiting paper that can be prevented from making unauthorized paper manufacture by a person who is not easy to manufacture the paper.

With the advent of highly reproducible copiers and printers, counterfeiting of money, securities, passports, gift certificates, and other proof documents has become easier, and as societies become more complex and diversified, they have been frequently used in the past. Fraud due to counterfeiting and various document forgeries is becoming more diverse.

In addition, money, securities, official documents and certificates with special anti-counterfeiting devices are also subject to counterfeit crimes, and more frequent counterfeiting occurs than before.

In particular, in recent years, the leakage of personally identifiable information by the spread of the Internet has emerged as a serious problem. Accordingly, by using the leaked personal information, it is easier to falsify various certificates such as resident registration, such as resident registration, and automobile registration, which are used as basic documents of national economic life, and as a second fraudulent tool such as credit card issuance and credit loan. Crime used also occurs in many forms.

Accordingly, various devices and methods for preventing counterfeiting of various securities and certificates currently in use have been implemented, but the spread of computer scanners, color printers, and color copying machines has recently been expanded. As a result, the use of counterfeit and counterfeit securities is increasing.

As a result, the incidence of counterfeiting events is increasing. In order to prevent counterfeiting on such a problem, anti-counterfeiting papers have been provided. Most anti-counterfeiting papers are manufactured so that the latent image hidden in the original is displayed when the original paper is copied. The image is lost and the latent image is manifested in a negative or positive form.

In other words, in the prior art, the presence of counterfeit was determined by applying a hidden picture for counterfeit prevention and a silver line that turns black during copying to banknotes and securities.

In this case, according to the technical problem required in the process of forgery discrimination, there is a problem that the general public can not easily check the presence of forgery. By using these problems, counterfeit and counterfeit securities manufactured through computer scanners, color printers, color copiers, and the like infringe the public interests and property rights of others.

However, these conventional anti-counterfeiting papers can be confirmed that the image is a copy because the latent image is present when the paper is forged, but there is no difficulty in the manufacture of the paper itself, preventing unauthorized manufacture of the paper without permission. I can't. In addition, in the original paper, the latent image should not be visually identified, but in some cases, the latent image may also be identified in the original paper, and it may be difficult to cover the authenticity of the paper because the latent image pattern is not clearly expressed in the copy.

As developed in view of the above situation, "counterfeit prevention paper" of Patent No. 0788877 is disclosed in the registered patent publication.

As shown in FIG. 1, the "counterfeit-proof paper" of Patent No. 0788877 is printed with a background pattern 10 and a latent image pattern 20, and the background pattern 10 is arranged on parallel lines 12 at regular intervals. The latent image pattern 20 is formed of a line 22 that is thinner than a line 12 branching into two strands from the line 12 forming the background pattern 10 to form the background pattern 10. It is characterized by being disposed at a narrower interval than the lines 12 forming the background pattern 10, the general public can not produce paper.

However, the "counterfeit prevention paper" of the above-mentioned patent No. 0788877 has a simple structure in which the division of the background pattern 10 and the latent image pattern 20 is made according to the thickness of the printed line and the density of the line. There has been a problem that paper can be produced.

In addition, the line forming the latent image pattern 20 is formed in 0.00005 to 0.0001 inch, which corresponds to the thickness of 1/2 of the thickness of the line of the background pattern 10, but the background pattern 10 and the latent image pattern ( 20) is being forged due to the improvement of the lens quality of a recently produced copier or scanner.

The present invention was invented to solve the problem that conventional anti-counterfeiting paper can be easily manufactured by imitating the above situation, and its object is to print a background pattern and a latent image pattern so that the latent image pattern is not easily identified by the naked eye. When printing by printing lines with special lines and dots, the latent image is clearly displayed when copying, making it difficult to manufacture the paper while making it easy to check whether the paper is made without permission. The present invention provides an anti-counterfeiting paper which can effectively prevent forgery.

Another object of the present invention is to provide an anti-counterfeiting paper which can improve the anti-counterfeiting function of various currencies, securities, official documents, certificates, etc., and facilitate counterfeit discrimination.

Still another object of the present invention is to provide an anti-counterfeiting paper having excellent anti-counterfeiting function by facilitating forgery determination by varying the degree of appearance of the background pattern and the latent image pattern formed on the paper according to temperature.

The anti-counterfeiting paper according to the present invention for achieving the above object is a horizontal strip (11a) and a vertical strip (11a) and the longitudinal strip (11b) in the shape of a plurality of horizontal strips (11a) and longitudinal strips (11b) side by side at regular intervals ( A bottom background pattern 10 formed by alternately arranged in a lattice manner; A latent image composed of a line 21 having one side arbitrarily dug and a plurality of grooves 21a formed therein, and a plurality of dots 22 formed along the length direction of the line 21 between the lines 21 and 21. It is characterized by consisting of a pattern (20).

The present invention prints the printed lines constituting the background pattern and the latent image pattern with special lines and dots so that the latent image is not easily identified with the naked eye. It makes it difficult for the person who is not authorized to manufacture the paper to manufacture the paper without permission, and it can effectively prevent the forgery of documents, etc., and to prevent counterfeit function of various currencies, securities, official documents and certificates. In addition to improving and facilitating forgery discrimination, the degree of appearance of the background pattern and the latent image pattern formed on the paper varies depending on temperature, thereby facilitating the forgery discrimination.

1 is a view showing the configuration of a conventional anti-counterfeiting paper,
2 is a view showing the configuration of the anti-counterfeiting paper of the present invention,
3 is an exemplary view showing the use state of the present invention forgery prevention paper,
Figure 4 is a view showing a copy state of the anti-counterfeiting paper of the present invention shown in FIG.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention forged paper.

Figure 2 is a view showing the configuration of the anti-counterfeiting paper of the present invention, Figure 3 is an exemplary view showing a state of use of the anti-counterfeiting paper of the present invention, Figure 4 is a view showing a copy state of the anti-counterfeiting paper of the present invention shown in Figure 3, The anti-counterfeiting paper of the present invention forms a plurality of horizontal bands (11a) and longitudinal bands (11b) parallel to the line 11 at regular intervals, the horizontal band (11a) and the vertical band (11b) alternately inclined A floor background pattern 10 arranged in a row; A latent image composed of a line 21 having one side arbitrarily dug and a plurality of grooves 21a formed therein, and a plurality of dots 22 formed along the length direction of the line 21 between the lines 21 and 21. It consists of a pattern 20.

In addition, a temperature change pattern 30 formed by printing a temperature change ink on the anti-counterfeiting paper may be further formed.

The line 11 of the bottom background pattern 10 is preferably printed with a translucent ink having a reflectance of 30 to 50% having a thickness of 0.05 mm to 0.01 mm so as to increase the reflectance of the copier light source during copying.

The ratio of the line 21 and the groove 21a of the latent image pattern 20 is selected within the range of 70 to 90%: 10 to 30%, and the ratio of the line 21 to the dot 22 is 70 to 98%. : It is preferable to select and use in 2 to 30% of range.

In addition, the line 21 of the latent image pattern 20 preferably has a thickness printed in the primary color of 0.1mm to 0.5mm.

The temperature change pattern 30 is a pattern pattern or a letter pattern formed by a temperature change ink, and the temperature change ink is an offset ink of 70 to 72 wt% and a thermal change gel material [US Patent No. 5,591,255 (1997). 16-18% by weight of the "Heat Set Gel Vehicle" known as "Heat Set Gel Vehicle" and the "Heat Set Free Flow Vehicle known from the US Pat. No. 5,591,255 (registered Jan. 7, 1997). "] 6 to 8% by weight and 6 to 8% by weight of ink oil are used, and these temperature change inks are printed with mixed varnish, polyester resin layer and diffusion resin layer to vary the desired temperature change ink as needed. Although it is possible to use, most preferably, an ink is used in which the printed contents (pattern and text) hidden at a temperature of 20 to 50 ° C. are used.

Next, the operation of the anti-counterfeiting paper of the present invention configured as described above will be described in detail.

Figure 3 is an exemplary view showing the use state of the anti-counterfeiting paper of the present invention, the bottom background pattern 10 and the latent image pattern 20 is printed on the anti-counterfeiting paper of the present invention, the mark, letters, mutual , Local government name, country name, school name, etc. Etc. Patterns and letters are formed with the temperature change ink, and the latent image pattern 20 appears as the paper is copied as shown in the copying state shown in FIG.

As shown in the drawing, the background pattern 10 has a plurality of horizontal bands 11a and a vertical band 11b having parallel lines 11 arranged at regular intervals so that the horizontal band 11a and the vertical band ( 11b) are alternately arranged in a grid, and lines 11 of the bottom background pattern 10 are printed with translucent ink having a reflectance of 40% having a thickness of 0.03 mm.

As described above, the bottom background pattern 10 is printed with translucent ink and is repeated in a grid arrangement to cause an efficient optical illusion.

In addition, the latent image pattern 20 may be formed along the length direction of the line 21 between the line 21 and the line 21 and the line 21 in which a plurality of grooves 21a are formed at one side thereof. The dot 22 of the latent image pattern 20, the ratio of the line 21 and the groove (21a) is selected in the range of 80 90%: 20%, and the line 21 and the dot 22 of The ratio is selected and used within the range of 90%: 10%, the line 21 of the latent image pattern 20 is 0.3mm thick printed in the primary color.

As described above, the latent image pattern 20 includes a line 21, a groove 21a, and a dot 22 in a proper ratio. do.

Preferably, the lines 21 forming the latent image pattern 20 have a thickness 100 times larger than those of the lines 11 forming the bottom background pattern 10, but are processed in the same pattern as the background pattern 10. Therefore, since the background pattern 10 and the latent image pattern 20 have the same level of brightness, identification of the latent image pattern 20 becomes more difficult.

The copy of such anti-counterfeiting paper is as shown in FIG. That is, the lines 21 forming the latent image pattern 20 are clearly reproduced, but the lines 11 constituting the bottom background pattern 10 are relatively larger than the lines 21 constituting the latent image pattern 20. Because of their thinness, they cannot be reproduced properly, leaving traces or disappearing completely. As the line 11 constituting the bottom background pattern 10 is not properly reproduced or completely lost, the latent image pattern 20 appears in a positive form in the copy of the paper so that it can be easily distinguished from the original.

On the other hand, as the latent image pattern 20 is not visually identified on the anti-counterfeit paper, the latent image pattern 20 appearing on the copy is relatively sharper, and the distinction between the copy and the original is made clear. In the present invention, for this purpose, the latent image pattern 20 is formed of lines 21, grooves 21a, and halftones 22 having an appropriate ratio. As described above, when the latent image pattern 20 includes the lines 21, the grooves 21a, and the dots 22, the latent image pattern 20 and the bottom background pattern 10 form the same pattern to form the latent image pattern 20. Identification becomes more difficult. As a result, the latent image pattern 20 appearing on the copy is relatively sharper, so that the copy and the original are more clearly distinguished.

In addition, the line 11 forming the bottom background pattern 10 is preferably formed to a thickness of 0.05 mm or less, which is the maximum line thickness that cannot be reproduced by a copier or a scanner. As described above, when the bottom background pattern 10 has a thickness of 0.05 mm or less, the line 11 forming the bottom background pattern 10 is completely lost during copying so that the latent image pattern 20 has a positive shape. It appears clearly.

As described above, although the thinner the thickness of the line 11 forming the bottom background pattern 10 is, the latent image pattern 20 is more prominently displayed. The thinner the thickness, the more difficult it is to print a line, and there is a high possibility that the latent image pattern 20 is identified on the original anti-counterfeiting paper. Therefore, when the line 11 forming the bottom background pattern 10 is completely lost during copying, and the latent image pattern 20 is clearly present, the printability of the line 11 forming the bottom background pattern 10 is considered. Preferably, the line 11 forming the bottom background pattern 10 has a thickness of 0.05 mm to 0.01 mm.

The anti-counterfeiting paper according to the present invention having such a configuration makes it easy to check whether the paper is copied because the latent image pattern 20 appears when the copy is made. In particular, since the latent image pattern 20 is printed on the original anti-counterfeiting paper so that it is not easily identified, the latent image pattern 20 appearing on the copy is relatively sharper, which makes it easier to distinguish the copy from the original.

In addition, the temperature change pattern 30 of the anti-counterfeiting paper of the present invention, if the anti-counterfeiting paper is placed in a temperature atmosphere higher than room temperature, that is, the temperature of 20 ~ 50 ℃, mark, character, mutual, local autonomy of the temperature change pattern 30 Group name, country name, school name, etc. Etc. Since the pattern and the characters appear clearly, the temperature change pattern 30 also makes it easy to check whether the anti-counterfeit paper is original, and the appearance of the temperature change pattern 30 by the temperature at the time of copying is different from the original. Since copies are made in different states, it is easy to check whether the paper is copied.

While the present invention has been described as a preferred embodiment, the present invention is not limited thereto, and various modifications can be made without departing from the gist of the invention.

10: floor background pattern 11: line
11a: transverse strip 11b: longitudinal strip
20: latent image pattern 21: line
21a: home 22: halftone
30: temperature change pattern

Claims (6)

Lines 11 arranged at regular intervals in parallel form a plurality of transverse bands 11a and longitudinal bands 11b to form a horizontal band 11a and a longitudinal band 11b alternately arranged in a diagonal manner. A background pattern 10; A latent image composed of a line 21 having one side arbitrarily dug and a plurality of grooves 21a formed therein, and a plurality of dots 22 formed along the length direction of the line 21 between the lines 21 and 21. In an anti-counterfeiting paper consisting of a pattern 20;
The line 11 of the bottom background pattern 10 is 0.05 mm to 0.01 mm thick printed with a translucent ink having a reflectance of 30% to 50%;
The ratio of the line 21 and the groove 21a of the latent image pattern 20 is selected within the range of 70 to 90%: 10 to 30%, and the ratio of the line 21 to the dot 22 is 70 to 98%. : Selected within the range of 2-30%;
An anti-counterfeiting paper, characterized in that the temperature change pattern 30 is formed on the anti-counterfeiting paper by printing with a temperature change ink. delete delete delete The anti-counterfeiting paper according to claim 1, wherein the line (21) of the latent image pattern (20) has a thickness of 0.1 mm to 0.5 mm printed in primary colors. delete

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