KR20120077578A - Security paper having anti-counterfeiting features and preparing method thereof - Google Patents

Abstract

PURPOSE: Security paper with anti-counterfeiting features and a method for preparing the same are provided to facilitate an anti-counterfeiting process. CONSTITUTION: Security paper with anti-counterfeiting features includes a hidden line, characters, and features. Characters or features formed on the hidden line are continued from characters or features formed on a paper part. The hidden line is based on multiple layers. The characters or the features are processed with the irradiation of laser. The hidden line includes a material which is combusted, evaporated, or emits light based on the irradiation of the laser. The characters or the features are finely perforated.

Description

Security paper having anti-pattern and manufacturing method thereof {Security Paper having Anti-counterfeiting features and Preparing Method Thereof}

The present invention relates to a security paper having a continuous pattern and a manufacturing method thereof.

Generally, in the manufacture of paper of banknotes and securities, the hidden line exists in the form of film or fiber in the security product from one end to the other end, and includes various characteristics in the film or fiber to visual effect or device. It may also have enemy characteristics. In other words, the hidden line is a security element that is used by the users as a tool for determining the authenticity of the security product. For example, the user may be able to create specific micro patterns, partial metal layers, insert letters, patterns, use materials that exhibit fluorescence in response to specific wavelengths, use optical properties, or use electromagnetic properties. It can imply various levels of security up to identification.

In this regard, the Hidden Line was manufactured and applied by the Bank of England Banks in the 1930s in security paper, and has been continuously developed since then, and is still important as a security factor with silver coins.

Ordinary hidden lines are usually plastic or metal-deposited plastics that can be brightly colored and contain holographic images or patterns in hidden lines.

The metal-deposited silver wire cannot be successfully reproduced as it passes through the copier and only appears as a shaded black line on the surface, and is almost invisible when reflected by reflected light, but clearly visible when transmitted through it. Variants have been developed.

Patent Document 1 is based on a metal material such as aluminum, deposited on a film and then inserted into a paper. The use of this method is to use an effect that appears as a dark image in the light through which the metal layer is transmitted, but does not appear in the reflected light.

As the improved methods of these methods, as described in Patent Documents 2 and 3, the Clear Text hidden line which selectively removes the metal deposition layer to make characters or patterns appear transparent They also take advantage of these optical effects.

Patent Document 4 describes a more technically improved and effective method, and these types of security elements are used in the form of insertion or partial exposure in paper as described in Patent Documents 5 and 6, It is mainly a partially exposed silver wire, and because of the reflective effect of metal on radiation, this element is black, which is also used as a very important security factor.

There are many other hidden lines. For example, windowed threads are now applied to banknotes in many countries because they provide a high degree of security, which on one side looks the same as normal silver lines, but on the other side they are woven through paper. There are features that appear to be. The silver wire is coated with aluminum to protect the exposed part and maintain its distinctive luster, and the metal coated part appears black through the copier. In addition, it can be manufactured only in the paper machine, and may include a letter such as a company name.

The time-varying silver line is characterized in that the color of the silver line surface is different depending on the angle of view of the silver line, which is realized through the coating of a pigment having a multilayer structure or a multilayer structure of the film from golden to green, red to golden, and the like.

Fluorescent silver wire reacts with ultraviolet rays and reacts in the same manner as fluorescent silver, and in general, the silver wire is seen as a general colored silver wire, which is inherently secure, but has a characteristic that security is further enhanced due to the addition of fluorescent properties. .

Magnetic hidden lines are formed of a pattern of magnetic pigments that cannot be erased, tampered with or duplicated. A magnetic pigment capable of machine reading enables automatic detection of printed matter by a high-speed substrate sorter or a small portable reader. By increasing number, it can be checked by unit or individually.

As described above, the aforementioned prior arts attempt to increase security of security products and suppress attempts to counterfeit through hidden lines. However, when the hidden lines are partially obtained from the paper and attached to the counterfeits, the hidden line itself is vulnerable. There is a problem that there is.

U.S. Patent 4,652,015 U.S. Patent 4,652,015 European Patent No. 0,319,157 Korean Patent No. 0,069,251 German Patent No. 1,552,853 German Patent No. 1,604,463

Accordingly, in the present invention, in order to solve the problems of the prior art as described above, a security paper and a method of manufacturing the same has been developed on the paper and a hidden line and the pattern is formed, the present invention was completed based on this.

Accordingly, an object of the present invention is to provide a security paper that is difficult to forge when the pattern processed on the hidden line matches the paper and the hidden line is destroyed or the hidden line is separated when the hidden line is to be separated from the paper.

Another object of the present invention to provide a method for producing the security paper.

Security paper having a continuous pattern according to the present invention for achieving the above object is a security paper having a hidden line, characterized in that the character or pattern formed on the hidden line is continuous with the paper.

In addition, in the security paper of the present invention, the hidden line is characterized in that the multi-layer structure.

In the security paper of the present invention, the character or pattern is characterized in that processed by a laser.

In the security paper of the present invention, the silver line is characterized in that it comprises a material that burns, evaporates, or emits light in response to the laser.

In the security paper of the present invention, the character or pattern is characterized in that the hidden line is cut in the form of a fine pattern.

In the security paper of the present invention, the character or pattern is characterized in that perforated in a fine pattern.

In the security paper of the present invention, the size of the perforation is characterized in that 300㎛ ² to 1.5mm ² .

In the security paper of the present invention, the multi-layered silver line is a layer which is oxidized in the base film and laser processing, a layer having an optical specificity, a layer having a fluorescence characteristic, a layer having an electromagnetic characteristic, and a silver line can adhere to the paper. At least one layer selected from the group consisting of layers.

In the security paper of the present invention, the layer oxidized in the laser processing is characterized in that the metal thin film layer or a layer formed by printing or coating.

In the security paper of the present invention, the security paper is characterized in that the bank notes, checks, securities, stamps, resident cards, passports, credit cards, gift certificates, tags or confidential documents.

In addition, the method for manufacturing the security paper for achieving another object of the present invention comprises the steps of preparing a security paper having a hidden line by putting a silver line of a multi-layered structure having no pattern in the papermaking process; And processing a character or a pattern to be continuous on the paper and the hidden line by using a laser during the papermaking process after the introduction of the hidden line or during the papermaking process.

In the manufacturing method of the present invention, the silver line is characterized in that it comprises a material that burns, evaporates, or emits light in response to the laser.

In the manufacturing method of the present invention, the laser processing is characterized by cutting the hidden line in the form of a fine pattern to form the character or pattern.

In the manufacturing method of the present invention, the laser processing is characterized by perforating the silver line in the form of a fine pattern.

In the manufacturing method of the present invention, the multi-layered silver line is a layer which is oxidized in the base film and laser processing, a layer having an optical specificity, a layer having a fluorescence characteristic, a layer having an electromagnetic characteristic, and the silver line can adhere to the paper At least one layer selected from the group consisting of layers.

Security paper with a certain pattern and a security product using the same according to the present invention can be seen that the pattern processed on the hidden line when viewed with the naked eye and magnifying glass coincides with the paper.

Previously, there was a weak part in the case of trying to reverse the security of the silver wire itself by partially acquiring the hidden wire from the paper and attaching it to the counterfeit. However, the security paper according to the present invention has a hidden line or a hidden line when the hidden wire is separated from the paper. In the case of separation, forgery is difficult, and thus high anti-counterfeiting effect.

Through this, the security paper formed with letters or patterns continuously on the paper and the silver line according to the present invention is used in a variety of banknotes, passports, certificates, bonds, cards, etc., the effect of checking the authenticity and prevention of counterfeit products is more excellent. Do.

1 is a sheet of paper and a silver line perforated at the same time according to an embodiment of the present invention.
2 is a sheet of paper and a printed pattern formed on the hidden line is connected in one design according to an embodiment of the present invention.
3 is a cross-section of a sheet of paper and a silver line formed at the same time according to an embodiment of the present invention.

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated concretely.

The present invention relates to a security element for preventing counterfeiting of security products, such as securities such as banknotes, checks, and gift certificates, or passports, certificates, etc., including the hidden line, partially exposed hidden line, concealed hidden line, stripe hologram, etc. The present invention relates to a security paper having a certain pattern and a method of manufacturing the same, which can determine whether or not to obtain an excellent anti-counterfeiting effect.

According to the present invention, a character or a pattern is continuously formed on the paper and the hidden line during the papermaking process or during the papermaking process in the manufacturing process of the security paper including the hidden line, and thus the character or the pattern is formed at the correct position of the paper. do.

Characters, patterns, etc., represented in the conventional hidden line have a problem that they do not exist at a fixed position on the paper, but are incorrectly positioned. This can be expressed at a predetermined position for manufacturing by inputting a hidden line expressing a specific character, pattern in the papermaking process. There was no.

Therefore, in the present invention, by using a laser to form a pattern directly on the silver line during the papermaking process or after the papermaking process, after inputting the silver wire of the multi-layered structure without the pattern during the papermaking process, to produce a security paper with the silver line is formed, Process hidden lines and paper so that patterns can be created directly on hidden lines and paper. This can be done during or after the papermaking process. That is, the silver wire may be a multilayer structure having no pattern inserted before the papermaking process, and may be processed by a laser, and the silver wire may include a material that changes characteristics such as combustion, evaporation, and / or light emission in response to the laser. .

On the other hand, in the present invention by using a laser to finely cut or perforate the film (hidden line) in the form of letters and / or patterns can be prevented from tampering the hidden line in the security product. Therefore, in the present invention, the film may be cut in the form of a fine pattern, or the silver wire may be processed to a perforated to a predetermined shape in a fine pattern. The size of the perforation for processing to the fine pattern to a predetermined shape is preferably 300㎛ ² to 1.5mm ² .

If the size of the perforation is less than 300㎛ ^2, it is difficult to identify the individual perforations due to the nonuniformity of the light transmittance of the paper in the confirmation process after processing to a fine pattern or a constant pattern, the size of the perforation 1.5mm ² In the above case, it is not preferable to affect the paper in the process of processing the hidden line, and in case of completely perforating the hidden line and the paper, the physical strength of the paper is lowered.

When processed in a fine pattern or a pattern according to the present invention can be confirmed by looking through the enlarger to reflect or transmit light. This can usually be the manufacturer's name, logo, or unique design. This is typically done through a high-tech printing press or through a part-demetallization process based on highly etch technology.

On the other hand, the multi-layered silver line may be composed of a layer which is oxidized in the base film and laser processing, a layer having an optical specificity, a layer having a fluorescent characteristic, a layer having an electromagnetic characteristic, and / or a layer to which the silver line can adhere to the paper. It can also be applied in combination to all or a part.

In addition, the laser processing layer may be a metal thin film layer or a layer formed by printing or coating, wherein the removed layer becomes transparent to be visible in transmitted light, and the unremoved layer becomes blocked to light so that the pattern can be recognized. Will be.

On the other hand, the security product using the security paper to which the hidden line is applied may be a banknote, check, securities, stamps, resident card, passport, credit card, gift certificates, tags or confidential documents.

Therefore, the present invention is to provide a security hidden wire manufacturing technology with a high degree of authenticity with a number of security features and to improve the security of the security product using this to contribute to the establishment of the distribution order of sound securities and security products. .

Therefore, when the pattern processed on the hidden line matches the paper, and when the hidden line is broken or the hidden line is separated when the hidden line is to be separated from the paper, forgery is difficult due to high anti-counterfeiting effect, and a security product using the security paper also The anti-counterfeiting effect can be enhanced. The effect of the anti-counterfeiting is shown in more detail in the embodiments to be described below.

In order to further explain the principles of the invention, embodiments are described below. However, this embodiment is not intended to limit the scope of the inventions considered by the present inventors.

Example 1

Manufacture of security paper with a series of characters

The silver wire applied to the security product was made to have an optical density of 2.0 by depositing an aluminum thin film on PET 16 μm, followed by a hologram effect, and was manufactured by a conventional method to form a partially exposed form in a paper as shown in FIG. 1. The prepared security paper was punctured with letters A, B, C, and D as shown in FIG. 1 using a laser processing machine KrF excimer laser (ATL, Germany). The energy density on the specimens ranges from 0.25 to 1 J / cm ² . In the hidden line, the drilling size was set to 100 µm, the pulse energy was set to 1 J / cm ² , the number of pulses was 50, and the pulse repetition rate was set to 25 Hz.

The results are shown in FIG. As can be seen in Figure 1, by forming the letters A, B, C, and D continuously on the partially exposed hidden line and the concealed paper portion, it was impossible to reproduce when separating and reattaching the hidden line for forgery.

Example 2

Manufacture of security paper with a series of patterns

The silver wire applied to the security product was subjected to blue fluorescent printing on the entire surface of PET with a thickness of 1 μm in a gravure printing method on a 30 μm PET, and was manufactured by a conventional method so as to completely cover up on a cross section of the paper as shown in FIG. 3. The prepared paper was printed with a wave pattern as shown in FIG. After printing, the ripple portion of the hidden line portion was removed using a laser processing machine Nd: YVO4 / Green laser. The energy density on the specimen is between 0.2 and 0.5 J / cm ² . Punching size for forming the wave pattern was controlled to ² to 2800㎛ 3000㎛ ² spacing of the other space is kept at 50㎛.

The results are shown in FIG. As can be seen in Figure 2, by forming the printed pattern formed on the paper and the silver line in a single design it was impossible to reproduce the reattachment by separating the hidden line for forgery.

Although the present invention has been described in detail through specific embodiments, this is for specifically describing the present invention, and the security paper having a certain pattern according to the present invention and a security product using the same are not limited thereto. It is apparent that modifications and improvements are possible by those skilled in the art. Therefore, such modifications or variations should also be seen as belonging to the claims of the present invention.

10: hidden line
20: character
30: Glyph

Claims (15)

In security paper with hidden lines,
Security paper having a continuous pattern of letters or patterns formed on the hidden line and continuous with the paper. The paper of claim 1, wherein the hidden line has a multilayer structure. The paper of claim 1, wherein the text or pattern is laser processed. The paper of claim 3, wherein the hidden line includes a material that burns, evaporates, or emits light in response to a laser. The paper of claim 3, wherein the letter or pattern has a hidden line cut in a fine pattern. The paper of claim 3, wherein the letter or pattern is perforated in a fine pattern. The paper of claim 6, wherein the perforations have a size of 300 μm ² to 1.5 mm ² . The method of claim 2, wherein the multi-layered silver line is composed of a layer which is oxidized in the base film and laser processing, a layer having an optical specificity, a layer having a fluorescence characteristic, a layer having an electromagnetic characteristic, and a layer to which the silver line can adhere to paper. A security paper comprising at least one layer selected from the group. The security paper according to claim 8, wherein the layer oxidized in the laser processing is a metal thin film layer or a layer formed by printing or coating. The paper of any one of claims 1 to 9, wherein the security paper is a bank note, a check, a security, a stamp, a resident card, a passport, a credit card, a gift certificate, a tag or a confidential document. Manufacturing a security paper having a hidden line by putting a silver line of a multi-layered structure having no pattern into a papermaking process;
After the papermaking process or the papermaking process after the addition of the hidden line using a laser, the paper and the method for producing a security paper comprising the step of continuing the pattern on the hidden line. The method of claim 11, wherein the silver line includes a material that burns, evaporates, or emits light in response to a laser. The method of claim 11, wherein the laser processing is a method of manufacturing a security paper, characterized in that to form the character or pattern by cutting the hidden line in the form of a fine pattern. The method of claim 11, wherein the laser processing is a security paper manufacturing method, characterized in that for perforating the silver line in the form of a fine pattern. The method according to claim 11, wherein the multi-layered silver line is composed of a layer oxidized in the base film and laser processing, a layer having an optical specificity, a layer having a fluorescence characteristic, a layer having an electromagnetic characteristic, and a layer that the silver line can adhere to the paper. Method for producing a security paper, characterized in that it comprises one or more layers selected from the group.

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