WO2022225282A1 - Recording medium for preventing leakage of hard copy - Google Patents
Recording medium for preventing leakage of hard copy Download PDFInfo
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- WO2022225282A1 WO2022225282A1 PCT/KR2022/005549 KR2022005549W WO2022225282A1 WO 2022225282 A1 WO2022225282 A1 WO 2022225282A1 KR 2022005549 W KR2022005549 W KR 2022005549W WO 2022225282 A1 WO2022225282 A1 WO 2022225282A1
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- Prior art keywords
- recording medium
- microwires
- microwire
- paper
- detection
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- 238000001514 detection method Methods 0.000 claims abstract description 100
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/373—Metallic materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
Definitions
- the present invention relates to a recording medium for preventing leakage of printed matter.
- One method is to install a detection gate at the entrance, detect when a security document containing a detection material passes through the detection gate, and provide an alarm signal to prevent export.
- a magnetic material is used as the detection material, and an electromagnetic (EM) type security gate that detects the magnetic material is installed at the entrance.
- the strip-type security paper is basically capable of identifying the detection material with the naked eye because of the size of the strip itself (generally about 20 ⁇ m thick, 0.65 ⁇ 1.0mm wide, 3 ⁇ 5cm long). Accordingly, Korean Patent Laid-Open Publication No. 2008-0107977 proposes to introduce a shielding layer in order to prevent the detection material from being identified with the naked eye.
- a shielding layer introduction process such as coating, printing, and lamination must be added, which complicates the manufacturing process and increases the manufacturing cost.
- microwire type security paper In addition, in the case of the strip-type security paper, the number of strips is small and the size is large, so it can be easily removed, and when the detection material is removed after printing, the function as the security paper is lost.
- An improved version of this is the microwire type security paper.
- microwires with a diameter of about 15 to 20 ⁇ m and a length of 5 to 10 mm are inserted into A4 size paper up to about 1,000. As such, hundreds of microwires are dispersed on a single A4 sheet, so it is not easy to remove.
- One object of the present invention is to overcome the technical limitations of the prior art, and to provide a recording medium for preventing output leakage having excellent detection and detection power in an electromagnetic type security gate using a microwire type detection material.
- Another object of the present invention is to provide a recording medium for preventing output from leaking, which is excellent in detection sensing power in an electromagnetic type security gate and also in a recognition rate in a security printer.
- the present inventors have found that when using a microwire-type detection material instead of a strip-type detection material used in the prior art, when used in a curved shape, that is, in an arc shape, the detection detection power in the electromagnetic type security gate, as well as the recognition rate in the security printer, are also It was found to be excellent, and the present invention was completed. Accordingly, the means for solving the problems of the present invention are as follows:
- a detection layer comprising a substrate and microwires dispersed and incorporated in the substrate, satisfying the conditions of (1) to (3) below
- a recording medium for preventing the leakage of output that contains 30 to 300 microwires per 100 cm 2 of the recording medium.
- the recording medium for preventing the leakage of the output of 1 above further comprising a layer of a substrate in which microwires are not incorporated on one or both sides of the detection layer.
- the present invention comprises a substrate and a detection layer including microwires dispersed and mixed in the substrate and satisfying the conditions of (1) to (3) described above, and 30 to 300 per 100 cm of recording medium.
- a recording medium for preventing leakage of output including microwires and a method for manufacturing the same.
- a microwire type detection material having a curved shape is used, so that excellent detection and detection power can be secured in an electromagnetic type security gate.
- the microwires that satisfy the above-mentioned conditions (1) to (3) less than a certain distance, it is possible to secure excellent detection and detection power in the electromagnetic type security gate as well as excellent recognition rate in the security printer, Compared with the conventional security paper, the ability to prevent ejection of printed documents is further improved.
- 1A and 1B show a method of calculating the curvature (K) of a microwire.
- FIG. 2 is a graph showing the detection sensing power according to the curvature (K) of the microwire in the electromagnetic type security gate.
- 3A and 3B are views showing a plane in the direction of the paper during a detection test of a recording medium for preventing leakage of an A4 size printout in an electromagnetic (EM) type security gate for one person.
- EM electromagnetic
- the present invention relates to a recording medium for preventing output leakage, wherein the recording medium for preventing output leakage includes a substrate and microwires dispersed and mixed in the interior of the substrate, satisfying the following conditions (1) to (3) a detection layer,
- the 'recording medium for preventing leakage of printed matter' means 'electronic sensitive security paper' among the types of security paper.
- Security paper is largely divided into 'electronic sensitive security paper', 'copy-obstructed security paper' and 'counterfeit prevention security paper'.
- 'Electronic sensitive security paper' is a printing paper designed to generate an alarm when an electronic sensitive gate (EM gate) installed at the doorway detects when the printout is leaked. It is a printing paper designed so that anyone can easily distinguish the original from the copy by creating a different image.
- EM gate electronic sensitive gate
- 'Anti-counterfeiting security paper' does not show a special condition on the surface, but is designed to distinguish the genuine product through a special lamp or phenomenon.
- the printout leakage prevention system is essentially composed of a security paper and a security gate, and optionally a security printer is further provided.
- a security printer is a printer that recognizes and prints only security paper, but does not print plain paper. If an organization or organization that wants to prevent printouts uses only secure paper as print paper, even if someone tries to secretly take out confidential documents using a general printer, it is detected at the security gate and can prevent leakage of important documents. However, these security gates are useless when a person who wants to take out confidential documents secretly brings in plain paper and prints it out on a regular printer before taking it out. Therefore, it is desirable to configure a printout prevention system in connection with a security printer in order to completely prevent printouts from leaking. Therefore, according to the output prevention system, it may be more preferable that the recording medium for preventing the output leakage has a high recognition rate in the security printer as well as the detection detection power in the security gate.
- the number of microwires per 100 cm 2 of the recording medium is 30 to 300 when a plurality of microwires are introduced into one sheet of A4 size paper in any direction.
- the detection power is low, and if it is greater than 300, the detection power is high, but the amount of microwires used is large, resulting in a cost increase, and it is not preferable because the white sensitivity is lowered by affecting the basic color of the paper. .
- the detection layer includes a microwire satisfying the characteristics of (1) to (3) as a detection material, thereby exhibiting a level of sensing power required for an electromagnetic type security gate.
- the detection layer includes microwires having a length of 0.5 cm or more and 1.0 cm or less. If the length of the microwire is less than 0.5 cm, the anti-magnetic effect is increased, and the recognition rate in the security printer is also lowered. If the length of the microwire exceeds 1.0 cm, When the security recording medium is manufactured, the dispersibility of the microwires is deteriorated and agglomeration occurs, which is undesirable because the yield is lowered and the price of the security recording medium is increased.
- the detection layer includes microwires satisfying 200 ⁇ microwire length/cross-sectional diameter ⁇ 2000. If the microwire satisfies these conditions, an excellent sensing effect can be obtained in the EM security gate. When the value of the length of the microwire / the cross-sectional diameter of the wire is less than 200, the anti-magnetic field effect is large and the sensing power is weakened. Since it is difficult to stably maintain the magnetism of the recording medium, it is difficult to secure quality as a detection/identification sensor.
- the anti-magnetic field effect is increased, and the thickness (total diameter) of the microwire is large compared to the total thickness of the recording medium, so that the microwire is exposed on the surface of the recording medium.
- the smoothness is adversely affected.
- the skin puncture problem due to the protrusion of the microwire may occur.
- the ratio of the thickness is less than 0.4.
- the ratio between the thickness of the microwire (total diameter) and the thickness of the recording medium is preferably 0.1 to 0.4.
- the detection layer includes microwires satisfying the condition of 0.3 cm -1 ⁇ curvature (K) of microwire ⁇ 3.0 cm -1 .
- the magnetic properties of the magnetic material detection material largely depend on its composition, but even if the composition is the same, it may vary depending on the shape of the magnetic material.
- the demagnetizing effect is very sensitive to the shape of the magnetic material.
- the demagnetizing effect is very small, but when the short side is placed in the magnetic field, the demagnetizing effect is very large.
- the detection power varies greatly depending on the longitudinal direction of the detection material.
- the recording medium for preventing the leakage of printed matter is produced using a paper machine of a paper company.
- additional materials such as cellulose or elongated materials tend to be oriented in the MD direction (vertical direction). Therefore, the security paper must be produced based on the number of microwires in the CD direction (horizontal direction) to secure excellent sensing power.
- this will cause a large amount of microwires to be inserted in the MD direction than necessary, it is a factor that significantly increases the unit cost of the product.
- microwires arranged at an angle of less than 45 degrees with a straight line parallel to the vertical direction of the recording medium are referred to as microwires in the MD direction, and microwires arranged at an angle of 45 degrees or more are referred to as microwires in the CD direction. .
- a security recording medium is manufactured using an existing paper machine, but the direction problem in the EM type security gate is solved by using a curved shape, that is, an arc shape, of a microwire, which is a detection material.
- the curvature K in the circle can be calculated from the length of the radius.
- ⁇ s corresponds to the length of the microwire
- ⁇ corresponds to the angle of curvature (radians).
- 1B shows an example of measuring a diameter to calculate a curvature of a microwire of a recording medium.
- the directionality in the security gate of the EM method to minimize the deviation in sensing power. If the curvature of the microwire is less than 0.3 cm -1 , the curvature effect is small, so the directionality problem in the security gate is hardly improved . It does not perform its role as a detection material properly, which seems to be due to the sudden increase in the anti-magnetic field effect.
- the detection layer may include a microwire having a curvature angle of 0.3 to 1.5 radians.
- the curvature angle ( ⁇ ) is a value calculated as curvature x wire length, and represents the difference in angle between both ends of the bent microwire. If the curvature angle of the microwire is less than 0.3 radian, the curvature effect is small, so the directionality problem in the security gate is hardly improved. The magnetic field effect may be increased and the function as a detection material may be deteriorated.
- the recording medium for preventing output leakage includes at least some microwires satisfying the conditions of (1) to (3) described above.
- 100% of the microwire may satisfy all of the conditions of (1) to (3) described above, in this case, the manufacturing cost may be excessively increased, and the microwire that does not satisfy all of these conditions in the microwire manufacturing process may be included.
- the security gate can detect within an error range. Accordingly, within 30% of the total microwires included in the recording medium for preventing output leakage according to the present invention, microwires that do not satisfy one or more of the conditions (1) to (3) may be included.
- any one manufactured by any method can be used as long as the conditions of (1) to (3) are satisfied.
- Examples thereof include, but are not limited to, in-rotating-water quenching method, cold drawn method, melt extraction method, quenching-and-drawing method, Taylor-Ulitovsky method, Adar-Bolotinsky method, and the like.
- the distance between the microwires closest to each other in the microwires included in the detection layer in the recording medium for preventing output leakage may be less than 3.0 cm. This is because, if the distance between the microwires is greater than 3.0 cm, the identification recognition rate in the security printer tends to decrease. Therefore, when a security printer is provided in the output leakage prevention system, it may be desirable to further satisfy the condition of (4) above in order to secure an identification recognition rate in the security printer.
- the magnetic property of a detection material is an important factor in the detection of a security gate
- the presence or absence of a specific recognizable metal is an important factor in the recognition rate in a security printer.
- a recognition method using magnetism can be introduced to security printers, in this case, the cost increases and the equipment configuration becomes complicated.
- the microwire may include a metal core and an insulating layer coated on the metal core.
- the metal core may include Co, Fe, Cr, Si, and B, and the insulating layer may be made of glass, and the thickness thereof may be 0.5 to 3 ⁇ m.
- the metal core constituting the microwire contains Co, Fe, Cr, Si and B, it is possible to secure the detection power in the security gate and the recognition rate in the security printer to a required level.
- the microwire The cross-sectional diameter means the diameter of the magnetically meaningful metal core
- the thickness of the microwire means the total diameter including the metal core and the insulating layer.
- the recording medium for preventing output leakage according to the present invention may further include a substrate layer in which microwires are not incorporated on one or both sides of the detection layer.
- the recording medium for preventing output leakage according to the present invention may be in the form of a four-ply or more laminated paper in which two or more two-ply papers having a layer of a substrate not mixed with microwires on one side of the detection layer are stacked with an adhesive layer therebetween.
- the adhesive layer may be configured to be in contact with the surface of the detection layer of the two-ply paper.
- the basis weight of the recording medium for preventing output leakage according to the present invention is a final product (a single-ply paper consisting only of a substrate and a detection layer in which microwires are mixed in the substrate, and a layer of the substrate in which microwires are not mixed on one side of the detection layer is provided 30 to 100 g / m 2 based on double-layered paper, multi-ply paper with four or more layers stacked with two or more of the two-ply paper, or three-ply paper with a substrate layer in which microwires are not mixed on both sides of the detection layer) to be.
- a final product a single-ply paper consisting only of a substrate and a detection layer in which microwires are mixed in the substrate, and a layer of the substrate in which microwires are not mixed on one side of the detection layer is provided 30 to 100 g / m 2 based on double-layered paper, multi-ply paper with four or more layers stacked with two or more of the two-ply paper, or three-
- the recording medium for preventing output leakage according to the present invention basically corresponds to copy/printing paper for a printer, it is preferable to have a basis weight similar to that of existing commercial copy/printing paper. If the basis weight is lower than 30 g/m2, it is difficult to manufacture paper with microwires mixed in, and it is too thin to use. can
- the recording medium for preventing output leakage according to the present invention is manufactured by using a paper machine of a paper company equipped with a Jangmang paper machine, a Hwanmang paper machine and a combination paper machine, for example, by the method described in Korean Patent Application Laid-Open No. 2017-0053027.
- a combination paper machine 2-ply, 3-ply, 4-ply, etc. can be manufactured at a time, and at this time, at least one layer (ply) becomes a detection layer including microwires as a detection material.
- the final recording medium may be manufactured using a laminating machine using the paper manufactured in the paper machine as a base stock (substrate).
- a laminating machine is a facility that coats one side of a base base paper with an adhesive and laminates the other base base paper to make a final product.
- the two base base papers may be the same kind of base paper or different kinds of base paper. That is, when there are two base base papers, they may be one in which microwires are mixed or not, one-ply paper or two-ply paper or more, respectively.
- one base stock paper is a two-ply paper composed of a layer of a substrate in which microwires are incorporated (that is, a detection layer) and a substrate in which microwires are not incorporated, and the other base stock paper is a substrate in which microwires are not incorporated.
- the final product may be three-ply paper.
- the material of the substrate may be white paper which occupies most of the copy paper regardless of whether microwires are mixed , but it may be thin paper, but the The composition may be similar to that of white paper.
- the layered shape of the final product does not affect the detection power at the security gate of the recording medium for preventing printouts or the recognition rate in the security printer.
- the recording medium for preventing output leakage is three or more layers, at least one of the inner layers is a detection layer in which microwires are mixed in the substrate, and the outermost both sides of the recording medium are composed of a layer of the substrate in which microwires are not mixed. It may be advantageous in that it does not cause problems such as skin puncture due to microwire protrusion.
- Micro having a cross-sectional diameter of 5 to 25 ⁇ m, a metal core in the form of an amorphous alloy containing Fe, Co, Cr, B and Si, and an insulating layer made of glass (silicon dioxide) and having a thickness of 0.5 to 3 ⁇ m Wires were prepared by the modified/modified Taylor-Ulitowski method, and microwires in which conditions (1) to (3) had the values shown in Table 1 were prepared.
- the prepared microwires are mixed with the slurry pulp, and papermaking is performed by a known method (for example, the method described in Korean Patent Application Laid-Open No. 2017-0053027) using a paper machine equipped with a long mesh paper machine, a Hwan mesh machine and a combination paper machine to make final basis weight.
- the recording media of Examples 1 to 13 were prepared in which the content was 80 g/m 2 and condition (4) had the values shown in Table 1 below.
- Sensitivity when a recording medium was passed through two electromagnetic gates was measured, and the detection sensitivity was indicated by a 5-point method. The higher the number, the higher the sensitivity, and X is not recognized by the gate.
- uppercase letters mean the vertical direction of the paper (297mm for A4 paper), and lowercase letters mean the horizontal direction of the paper (210mm for A4 paper).
- FIG 3 is a view showing the plane of the paper direction during the detection test of a recording medium for preventing leakage of A4 size output in an electromagnetic (EM) type single-person security gate (Zx plane: when passing an A4 paper vertically in the chest; Zy plane: when passing an A4 sheet vertically by the side).
- EM electromagnetic
- Comparative Examples 1 to 14 are recording medium 100 cm2 When any one or more of the conditions (1) to (3) of 30 to 300 per microwire is out of the scope of the present invention, the detection detection power at the security gate is insufficient, or the white sensitivity is low as less than 110 for printing paper It was confirmed that it was not suitable for use as a recording medium for preventing the leakage of printouts as well as (copy paper).
- Comparative Example 4 used a 1.5 cm long microwire, that is, condition (1) was outside the upper limit of the present invention, and the retention rate was poor for reasons such as poor dispersibility when manufacturing a security recording medium, and removal in the selection process. This lowered to less than 60% (the retention rate when the length of the microwire is 1.0 cm or less is 80 to 95%), and the unit price rose more than the lengthened amount.
- the detection power of the dual-type EM gate is good, but the detection power of the Zx plane was low in the mono-type security gate. (2.143), as a result, it seems that the anti-magnetic field effect is increased (in all of Examples 1 to 12, the curvature angle is less than 1.5 (0.31 to 1.48)).
- condition (1) is outside the lower limit of the present invention, and when the length of the microwire is less than 0.5 cm, even if condition (2) is satisfied (Comparative Example 1) Sensing power at the security gate You can see this very low. Although the aspect ratio of the microwire is important, it seems that the EM method has an excellent effect when it is basically more than the minimum length.
- Comparative Examples 8, 10, 12, 13 and 14 are cases in which condition (3) is outside the lower limit of the present invention (Comparative Examples 12 to 14 use a straight wire), and the curvature effect is small or absent in the security gate. It was confirmed that the directionality problem was not improved.
- Examples 14 to 16 are recording media containing 70% or more of microwires satisfying the conditions of (1) to (3), and both the detection power in the EM method security gate and the recognition power in the security printer are excellent. Confirmed.
- Comparative Examples 15 to 17 are recording media containing more than 30% of microwires that do not satisfy any one or more of (1) to (3), and it was confirmed that the sensing power of the EM gate was insufficient.
- the problem of directionality in the electromagnetic type security gate is improved by using a large number of curved, that is, arc-shaped detection microwires, and as a result, the Sensitivity has been improved.
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Abstract
The present invention relates to a recording medium for preventing leakage of hard copy, the recording medium including a substrate and a detection layer including microwires that are dispersedly incorporated inside the substrate and satisfy the conditions of: (1) 0.5 cm ≤ length ≤ 1.0 cm; (2) 200 < length/diameter of cross-section < 2000; and (3) 0.3 cm-1 < curvature (K) < 3.0 cm-1, wherein 30 to 300 microwires per 100㎠ of the recording medium are included, and the detection layer satisfies (4) the condition of a distance between most adjacently located microwires < 3.0 cm if necessary.
Description
본 발명은 출력물 유출 방지용 기록매체에 관한 것이다.The present invention relates to a recording medium for preventing leakage of printed matter.
저장 매체의 반출 통제뿐만 아니라 인쇄된 문서에 대해서도 반출을 통제할 필요성이 증가됨에 따라 기록매체에 검출 물질을 포함시켜 보안 문서의 반출을 막고자 하는 시도가 있다. 그 한가지 방법은 출입구에 탐지 게이트를 설치하고, 검출 물질을 함유한 보안 문서가 탐지 게이트를 통과하는 경우 이를 감지하여 경보 신호를 제공하여 반출을 방지하는 것이다. 검출 물질로는 자성체를 사용하고, 이 자성체를 감지하는 전자기(Electromagnetic, EM) 방식의 보안 게이트를 출입구에 설치한다.As the need to control the export of printed documents as well as control of storage media increases, there is an attempt to prevent the export of secure documents by including a detection material in the recording medium. One method is to install a detection gate at the entrance, detect when a security document containing a detection material passes through the detection gate, and provide an alarm signal to prevent export. A magnetic material is used as the detection material, and an electromagnetic (EM) type security gate that detects the magnetic material is installed at the entrance.
스트립 타입의 보안용지는 기본적으로 스트립 자체의 크기(일반적으로 두께 약 20㎛, 폭 0.65~1.0㎜, 길이 3~5㎝) 때문에 검출 물질을 육안으로 식별할 수 있다. 이에 따라, 검출 물질을 육안으로 식별할 수 없도록 하기 위해 대한민국 공개특허 제2008-0107977호에서는 차폐층 도입을 제안하였다. 그러나, 차폐층이 도입된 보안용지를 제조하기 위해서는 코팅, 인쇄, 합지 등의 차폐층 도입 공정이 추가되어야 하는데, 이는 제조 공정을 복잡하게 하고, 제조 원가를 상승시키는 요인이 되기도 한다.The strip-type security paper is basically capable of identifying the detection material with the naked eye because of the size of the strip itself (generally about 20㎛ thick, 0.65~1.0mm wide, 3~5cm long). Accordingly, Korean Patent Laid-Open Publication No. 2008-0107977 proposes to introduce a shielding layer in order to prevent the detection material from being identified with the naked eye. However, in order to manufacture the security paper in which the shielding layer is introduced, a shielding layer introduction process such as coating, printing, and lamination must be added, which complicates the manufacturing process and increases the manufacturing cost.
스트립 타입 보안용지의 경우 A4 용지 한 장에 수개(검출 물질이 고가이므로, 보통 2개 정도를 삽입함)의 스트립이 삽입된다. 그런데, EM 보안 게이트에서는 보안용지의 방향성에 따라 감지력의 차이가 발생하는 것으로 알려져 있다. 즉, 검출 물질의 길이 방향이 게이트 통과 방향과 수직일 때 감지력이 제일 높고, 통과 방향과 수평이면 감지력은 매우 낮아진다. 이러한 현상은 게이트의 세팅에 따라 반대로 되기도 한다. 이 때문에 임의 방향으로 삽입된 2~3개의 스트립으로는 모든 방향에서 일정 수준 이상의 감지력을 담보할 수 없게 된다.In the case of strip-type security paper, several strips (usually two or so are inserted since the detection material is expensive) are inserted into one A4 sheet. However, in the EM security gate, it is known that a difference in sensing power occurs depending on the direction of the security paper. That is, the detection power is highest when the longitudinal direction of the detection material is perpendicular to the gate passage direction, and the detection force is very low when the detection material is horizontal to the passage direction. This phenomenon may be reversed depending on the setting of the gate. For this reason, with two or three strips inserted in any direction, it is impossible to guarantee more than a certain level of sensing power in all directions.
또한, 스트립 타입의 보안용지의 경우, 스트립의 개수가 적고 크기가 커서 쉽게 제거될 수 있으며, 인쇄 후 검출 물질이 제거되면 보안용지로서의 기능을 상실한다. 이를 개선한 것이 마이크로와이어 타입의 보안용지로서, 일반적으로 직경 약 15~20㎛, 길이 5~10mm의 마이크로와이어가 A4 크기의 용지에 최대 약 1,000개까지 삽입된다. 이처럼 A4 용지 한 장에 수백 개 이상의 마이크로와이어가 분산되어 있어서 제거가 쉽지 않은 장점이 있다.In addition, in the case of the strip-type security paper, the number of strips is small and the size is large, so it can be easily removed, and when the detection material is removed after printing, the function as the security paper is lost. An improved version of this is the microwire type security paper. Generally, microwires with a diameter of about 15 to 20 μm and a length of 5 to 10 mm are inserted into A4 size paper up to about 1,000. As such, hundreds of microwires are dispersed on a single A4 sheet, so it is not easy to remove.
마이크로와이어 타입의 보안용지의 생산에는 제지업체의 초지기, 즉 일반 복사용지 생산 시에 사용하는 종이 생산 설비가 이용된다. 이때 생산 설비상 마이크로와이어가 CD 방향 (cross-machine direction, 일반적으로 A4 용지의 가로 방향, 210mm)보다는 MD 방향 (machine direction, 일반적으로 A4 용지의 세로 방향, 297mm)으로 배향하는 경향이 있다(MD/CD=9/1~7/3). 따라서 방향성이 있는 EM 보안 게이트에서 모든 방향에 대해 높은 수준의 감지력을 유지하려면 보안용지의 CD 방향의 마이크로와이어 개수를 기준으로 생산해야 한다. 그러나, 이 경우 보안용지의 MD 방향(세로 방향)으로는 필요한 것보다 다량의 마이크로와이어가 삽입되고, 이는 제품 제조 원가를 상승시키는 요인이 되므로 이를 개선할 필요가 있다.For the production of microwire type security paper, a papermaking machine of a paper company, that is, a paper production facility used in the production of general copy paper is used. At this time, on production facilities, the microwire tends to be oriented in the MD direction (machine direction, usually in the vertical direction of A4 paper, 297 mm) rather than in the CD direction (cross-machine direction, generally A4 paper horizontal direction, 210 mm) (MD /CD=9/1 to 7/3). Therefore, in a directional EM security gate, high for all directions In order to maintain the level of sensing power, it should be produced based on the number of microwires in the CD direction of the security paper. However, in this case, a larger amount of microwires than necessary are inserted in the MD direction (vertical direction) of the security paper, which increases the manufacturing cost of the product, so it is necessary to improve it.
본 발명의 한가지 목적은 전술한 종래 기술의 기술적 한계를 극복하기 위한 것으로서, 마이크로와이어 타입의 검출 물질을 사용하여 전자기 방식의 보안 게이트에서 검출 감지력이 우수한 출력물 유출 방지용 기록매체를 제공하는 것이다.One object of the present invention is to overcome the technical limitations of the prior art, and to provide a recording medium for preventing output leakage having excellent detection and detection power in an electromagnetic type security gate using a microwire type detection material.
본 발명의 다른 한가지 목적은 전자기 방식의 보안 게이트에서 검출 감지력이 우수함은 물론, 보안 프린터에서의 인식률 역시 우수한 출력물 유출 방지용 기록매체를 제공하는 것이다.Another object of the present invention is to provide a recording medium for preventing output from leaking, which is excellent in detection sensing power in an electromagnetic type security gate and also in a recognition rate in a security printer.
본 발명자들은 종래 기술에서 사용하는 스트립 타입의 검출 물질 대신 마이크로와이어 타입의 검출 물질을 사용할 때 휘어진 형태, 즉 원호 형태로 사용하는 경우 전자기 방식의 보안 게이트에서 검출 감지력은 물론, 보안 프린터에서의 인식률 역시 우수하다는 것을 밝혀내어 본 발명을 완성하였다. 따라서, 본 발명의 과제 해결 수단은 다음과 같다:The present inventors have found that when using a microwire-type detection material instead of a strip-type detection material used in the prior art, when used in a curved shape, that is, in an arc shape, the detection detection power in the electromagnetic type security gate, as well as the recognition rate in the security printer, are also It was found to be excellent, and the present invention was completed. Accordingly, the means for solving the problems of the present invention are as follows:
1. 기재, 및 상기 기재의 내부에 분산되어 혼입된, 하기 (1) 내지 (3)의 조건을 만족하는 마이크로와이어를 포함하는 검출층1. A detection layer comprising a substrate and microwires dispersed and incorporated in the substrate, satisfying the conditions of (1) to (3) below
(1) 0.5cm ≤ 마이크로와이어의 길이 ≤ 1.0cm,(1) 0.5cm ≤ the length of the microwire ≤ 1.0cm,
(2) 200 < 마이크로와이어의 길이/마이크로와이어의 단면 직경 < 2000, 및(2) 200 < length of microwire/diameter of cross-section of microwire < 2000, and
(3) 0.3㎝-1 < 마이크로와이어의 곡률(K) < 3.0㎝-1
(3) 0.3 cm -1 < Curvature (K) of microwire < 3.0 cm -1
을 포함하는 출력물 유출 방지용 기록매체로서,As a recording medium for preventing output leakage comprising a,
기록매체 100㎠ 당 30 내지 300개의 마이크로와이어를 포함하는 것인 출력물 유출 방지용 기록매체.A recording medium for preventing the leakage of output that contains 30 to 300 microwires per 100 cm 2 of the recording medium.
2. 검출층에 포함되는 마이크로와이어의 70% 이상이 (1) 내지 (3)의 조건을 만족하는 것인 상기 1의 출력물 유출 방지용 기록매체.2. The recording medium for preventing output from leaking in 1 above, wherein 70% or more of the microwires included in the detection layer satisfy the conditions (1) to (3).
3. 검출층이 하기 (4)의 조건을 만족하는 것인 상기 1 또는 2의 출력물 유출 방지용 기록매체:3. The recording medium for preventing the leakage of the output of 1 or 2 above, wherein the detection layer satisfies the condition of (4):
(4) 가장 근접한 위치에 존재하는 마이크로와이어들 사이의 거리 < 3.0cm.(4) The distance between the microwires present in the closest position < 3.0cm.
4. 마이크로와이어가 금속 코어 및 상기 금속 코어에 코팅된 절연층을 포함하는 것인 상기 1의 출력물 유출 방지용 기록매체.4. The recording medium for preventing output from leaking in 1 above, wherein the microwire includes a metal core and an insulating layer coated on the metal core.
5. 절연층이 유리 재질이고, 두께가 0.5 내지 3.0㎛인 상기 4의 출력물 유출 방지용 기록매체.5. The recording medium for preventing leakage of the output according to 4 above, wherein the insulating layer is made of glass and has a thickness of 0.5 to 3.0 μm.
6. 금속 코어가 Co, Fe, Cr, Si 및 B를 포함하는 것인 상기 4의 출력물 유출 방지용 기록매체. 6. The recording medium for preventing leakage of the output of 4 above, wherein the metal core includes Co, Fe, Cr, Si and B.
7. 검출층의 일면 또는 양면에 마이크로와이어가 혼입되지 않은 기재의 층을 더 포함하는 것인 상기 1의 출력물 유출 방지용 기록매체.7. The recording medium for preventing the leakage of the output of 1 above, further comprising a layer of a substrate in which microwires are not incorporated on one or both sides of the detection layer.
8. 검출층의 일면에 마이크로와이어가 혼입되지 않은 기재의 층이 구비된 2겹지 2개 이상이 접착층을 사이에 두고 적층된 4겹지 이상의 합지 형태인 상기 7의 출력물 유출 방지용 기록매체.8. The recording medium for preventing the output of the above 7 in the form of four or more laminated papers in which two or more two-ply papers are provided with a substrate layer in which microwires are not mixed on one side of the detection layer, and are laminated with an adhesive layer interposed therebetween.
9. 접착층이 2겹지의 검출층의 표면과 접하도록 적층되는 것인 상기 8의 출력물 유출 방지용 기록매체.9. The recording medium for preventing the output of the above 8, wherein the adhesive layer is laminated so as to be in contact with the surface of the detection layer of the two-ply paper.
10. 검출층이 곡률각 0.3 내지 1.5 라디안의 마이크로와이어를 포함하는 것인 상기 1 또는 2의 출력물 유출 방지용 기록매체.10. The recording medium for preventing output from leaking according to 1 or 2 above, wherein the detection layer includes a microwire having a curvature angle of 0.3 to 1.5 radians.
본 발명에 따라 기재, 및 상기 기재의 내부에 분산되어 혼입되고, 전술한 (1) 내지 (3)의 조건을 만족하는 마이크로와이어를 포함하는 검출층을 포함하고, 기록매체 100㎠ 당 30~300개의 마이크로와이어를 포함하는 출력물 유출 방지용 기록매체 및 그 제조 방법이 제공되었다.According to the present invention, it comprises a substrate and a detection layer including microwires dispersed and mixed in the substrate and satisfying the conditions of (1) to (3) described above, and 30 to 300 per 100 cm of recording medium. Provided are a recording medium for preventing leakage of output including microwires and a method for manufacturing the same.
본 발명에 따른 출력물 유출 방지용 기록매체는 휘어진 형태 (원호 형태)를 갖는 마이크로와이어 타입의 검출 물질이 사용됨으로써 전자기 방식의 보안 게이트에서 우수한 검출 감지력을 확보할 수 있었다. In the recording medium for preventing output leakage according to the present invention, a microwire type detection material having a curved shape (arc shape) is used, so that excellent detection and detection power can be secured in an electromagnetic type security gate.
또한 본 발명에서는 상술한 조건 (1) 내지 (3)의 범위를 만족하는 마이크로와이어들이 일정한 거리 미만이 되도록 함으로써 전자기 방식의 보안 게이트에서 우수한 검출 감지력은 물론 보안 프린터에서 우수한 인식률도 확보할 수 있으므로, 종래의 보안용지에 비해 인쇄된 문서의 반출을 방지하는 능력이 더욱 향상되었다.In addition, in the present invention, by making the microwires that satisfy the above-mentioned conditions (1) to (3) less than a certain distance, it is possible to secure excellent detection and detection power in the electromagnetic type security gate as well as excellent recognition rate in the security printer, Compared with the conventional security paper, the ability to prevent ejection of printed documents is further improved.
도 1a 및 1b는 마이크로와이어의 곡률(K)를 계산하는 방법을 도시한 것이다.1A and 1B show a method of calculating the curvature (K) of a microwire.
도 2는 전자기 방식의 보안 게이트에서 마이크로와이어의 곡률(K)에 따른 검출 감지력을 도시한 것이다.2 is a graph showing the detection sensing power according to the curvature (K) of the microwire in the electromagnetic type security gate.
도 3a 및 3b는 전자기(EM) 방식의 1인용 보안 게이트에서 A4 크기의 출력물 유출 방지용 기록 매체의 검출 테스트시의 용지 방향의 평면을 도시한 것이다.3A and 3B are views showing a plane in the direction of the paper during a detection test of a recording medium for preventing leakage of an A4 size printout in an electromagnetic (EM) type security gate for one person.
본 발명은 출력물 유출 방지용 기록매체에 관한 것으로서, 상기 출력물 유출 방지용 기록 매체는 기재, 및 상기 기재의 내부에 분산되어 혼입된, 하기 (1) 내지 (3)의 조건을 만족하는 마이크로와이어를 포함하는 검출층을 포함하고,The present invention relates to a recording medium for preventing output leakage, wherein the recording medium for preventing output leakage includes a substrate and microwires dispersed and mixed in the interior of the substrate, satisfying the following conditions (1) to (3) a detection layer,
(1) 0.5cm ≤ 마이크로와이어의 길이 ≤ 1.0cm,(1) 0.5cm ≤ the length of the microwire ≤ 1.0cm,
(2) 200 < 마이크로와이어의 길이/마이크로와이어의 단면 직경 < 2000, 및(2) 200 < length of microwire/diameter of cross-section of microwire < 2000, and
(3) 0.3㎝-1 < 마이크로와이어의 곡률(K) < 3.0㎝-1, (3) 0.3 cm -1 < Curvature (K) of microwire < 3.0 cm -1 ,
기록매체 100㎠ 당 30 내지 300개의 마이크로와이어를 포함한다.30 to 300 microwires per 100 cm 2 of the recording medium.
본 발명에 있어서, '출력물 유출 방지용 기록매체'는 보안용지 종류 중 '전자 감응 보안용지'를 의미한다. 보안용지는 크게 '전자 감응 보안용지', '복사 방해 보안용지' 및 '위조 방지 보안용지'로 구분된다. '전자 감응 보안용지'는 출력물이 유출될 때 출입구에 설치된 전자 감응식 게이트(EM 게이트)가 이를 감지하여 경보를 발생할 수 있도록 고안된 인쇄용지이고, '복사 방해 보안용지'는 원본을 복사하면 원본과 다른 이미지가 생성되도록 하여 누구나 손쉽게 원본과 복사본을 구분할 수 있도록 고안된 인쇄용지이며, '위조 방지 보안용지'는 표면적으로 특별한 상태를 나타내지 않지만 특수 램프나 현상을 통해 진품을 구별할 수 있도록 고안된 용지이다.In the present invention, the 'recording medium for preventing leakage of printed matter' means 'electronic sensitive security paper' among the types of security paper. Security paper is largely divided into 'electronic sensitive security paper', 'copy-obstructed security paper' and 'counterfeit prevention security paper'. 'Electronic sensitive security paper' is a printing paper designed to generate an alarm when an electronic sensitive gate (EM gate) installed at the doorway detects when the printout is leaked. It is a printing paper designed so that anyone can easily distinguish the original from the copy by creating a different image. 'Anti-counterfeiting security paper' does not show a special condition on the surface, but is designed to distinguish the genuine product through a special lamp or phenomenon.
출력물 유출방지 시스템은 필수적으로 보안용지와 보안 게이트로 이루어지고, 선택적으로 보안 프린터가 더 구비된다. 보안 프린터는 보안용지만을 인식하여 인쇄하고, 일반용지는 인쇄하지 않는 프린터이다. 출력물 유출을 방지하고자 하는 조직이나 단체가 보안용지만을 출력 용지로 사용하는 경우, 누군가 일반 프린터를 사용한 기밀 문서를 몰래 반출하려고 해도 보안 게이트에서 검출되어 중요 문서의 유출을 막을 수 있다. 그러나 기밀 문서를 반출하고자 하는 사람이 일반 용지를 몰래 반입하여 일반 프린터에서 출력한 후 반출하는 시도에 대해 이러한 보안 게이트는 무용지물이 된다. 따라서 완벽한 출력물 유출방지를 위해서는 보안 프린터도 연계하여 출력물 유출 방지 시스템을 구성하는 것이 바람직하다. 따라서, 출력물 유출방지 시스템에 따라 출력물 유출 방지용 기록매체는 보안 게이트에서의 검출 감지력은 물론 보안 프린터에서의 인식률 역시 높은 것이 더 바람직할 수 있다.The printout leakage prevention system is essentially composed of a security paper and a security gate, and optionally a security printer is further provided. A security printer is a printer that recognizes and prints only security paper, but does not print plain paper. If an organization or organization that wants to prevent printouts uses only secure paper as print paper, even if someone tries to secretly take out confidential documents using a general printer, it is detected at the security gate and can prevent leakage of important documents. However, these security gates are useless when a person who wants to take out confidential documents secretly brings in plain paper and prints it out on a regular printer before taking it out. Therefore, it is desirable to configure a printout prevention system in connection with a security printer in order to completely prevent printouts from leaking. Therefore, according to the output prevention system, it may be more preferable that the recording medium for preventing the output leakage has a high recognition rate in the security printer as well as the detection detection power in the security gate.
검출 물질의 길이가 동일한 경우 그 단면적의 증가는 기전력(e ≒NBAf), 즉 고조파 성분의 크기를 증대시키므로, 검출층에 혼입되는 검출 물질은 그 총 단면적(마이크로와이어 한 개의 단면적 X 총 마이크로와이어 개수/A4)이 클수록 유리할 수 있다. 본 발명에 따른 출력물 유출 방지용 기록매체에 있어서, 복수 개의 마이크로와이어 A4 크기의 용지 1장에 임의의 방향으로 도입할 때 기록매체 100㎠ 당 마이크로와이어 개수는 30 내지 300인 것이 바람직하다. 100㎠ 당 마이크로와이어 개수가 30 보다 작으면 검출력이 낮고, 300 보다 크면 검출력은 높지만 마이크로와이어의 사용량이 많아져서 원가 상승을 초래하고, 종이의 기본 색상에 영향을 미쳐서 백감도가 저하되므로 바람직하지 않다.When the length of the detection material is the same, an increase in the cross-sectional area increases the electromotive force (e ≒NBAf), that is, the size of the harmonic component. A larger /A4) may be advantageous. In the recording medium for preventing printouts according to the present invention, it is preferable that the number of microwires per 100 cm 2 of the recording medium is 30 to 300 when a plurality of microwires are introduced into one sheet of A4 size paper in any direction. If the number of microwires per 100cm2 is less than 30, the detection power is low, and if it is greater than 300, the detection power is high, but the amount of microwires used is large, resulting in a cost increase, and it is not preferable because the white sensitivity is lowered by affecting the basic color of the paper. .
본 발명에 따른 출력물 유출 방지용 기록매체에서 상기 검출층은 검출 물질로서 상술한 (1) 내지 (3)의 특성을 만족하는 마이크로와이어를 포함함으로써, 전자기 방식의 보안 게이트에서 요구되는 수준의 감지력을 나타낼 수 있다. 이하에서, 상기 (1) 내지 (4)의 조건에 대해 구체적으로 설명한다.In the recording medium for preventing output leakage according to the present invention, the detection layer includes a microwire satisfying the characteristics of (1) to (3) as a detection material, thereby exhibiting a level of sensing power required for an electromagnetic type security gate. can Hereinafter, the conditions of the above (1) to (4) will be described in detail.
(1) 마이크로와이어의 길이(1) Length of microwire
본 발명에 따른 출력물 유출 방지용 기록매체에 있어서, 검출층은 길이가 0.5cm 이상, 1.0cm 이하인 마이크로와이어를 포함한다. 마이크로와이어의 길이가 0.5cm 미만이면 반자장 효과가 커지고, 보안 프린터에서의 인식률도 낮아진다. 마이크로와이어의 길이가 1.0cm를 초과하면 보안용 기록매체 제조 시 마이크로와이어의 분산성이 나빠져서 뭉치는 경우가 발생하여 수율이 떨어지며, 보안용 기록매체의 가격이 상승하기 때문에 바람직하지 않다.In the recording medium for preventing output leakage according to the present invention, the detection layer includes microwires having a length of 0.5 cm or more and 1.0 cm or less. If the length of the microwire is less than 0.5 cm, the anti-magnetic effect is increased, and the recognition rate in the security printer is also lowered. If the length of the microwire exceeds 1.0 cm, When the security recording medium is manufactured, the dispersibility of the microwires is deteriorated and agglomeration occurs, which is undesirable because the yield is lowered and the price of the security recording medium is increased.
(2) 마이크로와이어의 길이/마이크로와이어의 단면 직경의 비(2) Ratio of the length of the microwire/diameter of the cross-section of the microwire
본 발명에 따른 출력물 유출 방지용 기록매체에 있어서, 검출층은 200 < 마이크로와이어의 길이/단면 직경 < 2000을 만족하는 마이크로와이어를 포함한다. 마이크로와이어가 이러한 조건을 만족하는 경우 EM 보안 게이트에서 우수한 감지 효과가 확보될 수 있다. 마이크로와이어의 길이/와이어의 단면 직경의 값이 200 미만인 경우 반자장 효과가 커서 감지력이 약화되며, 이 값이 2000을 초과하는 경우 마이크로와이어 직경이 너무 작아서 제조 공정상 생산성이 떨어지고 기술적인 어려움으로 인해 기록매체의 자성을 안정적으로 유지하기 어려워져서 감지/식별 센서로서 품질을 확보하기 어렵다. In the recording medium for preventing output leakage according to the present invention, the detection layer includes microwires satisfying 200 < microwire length/cross-sectional diameter < 2000. If the microwire satisfies these conditions, an excellent sensing effect can be obtained in the EM security gate. When the value of the length of the microwire / the cross-sectional diameter of the wire is less than 200, the anti-magnetic field effect is large and the sensing power is weakened. Since it is difficult to stably maintain the magnetism of the recording medium, it is difficult to secure quality as a detection/identification sensor.
마이크로와이어의 길이/와이어의 단면 직경의 값이 200 미만인 경우 반자장 효과가 커지는 것은 물론, 기록매체의 전체 두께 대비 마이크로와이어의 두께(전체 직경)가 커서 기록매체의 표면에 마이크로와이어가 노출되는 경항이 상승하므로 평활도에 나쁜 영향을 미친다. 또한, 마이크로와이어 돌출에 의한 피부 찔림 문제가 발생할 우려가 있다. 기록매체 표면에서의 마이크로와이어 돌출을 완벽하게 차단하기 위해서는 겹지 형태로 생산할 수 있는데, 이를 감안할 때 그 두께의 비가 0.4 미만인 것이 바람직하다. 한편, 현재 제조 기술상 그 비율이 0.1 미만인 마이크로와이어를 균일하게 제조하는 것이 어렵고, 검출 물질에 요구되는 자성 물성이 급격하게 낮아지는 경향이 있어서 바람직하지 않다. 따라서, 마이크로와이어의 두께(전체 직경)와 기록매체의 두께의 비는 0.1~0.4 인 것이 좋다. When the value of the length of the microwire/diameter of the cross-section of the wire is less than 200, the anti-magnetic field effect is increased, and the thickness (total diameter) of the microwire is large compared to the total thickness of the recording medium, so that the microwire is exposed on the surface of the recording medium. As this increases, the smoothness is adversely affected. In addition, there is a possibility that the skin puncture problem due to the protrusion of the microwire may occur. In order to completely block the protrusion of microwires from the surface of the recording medium, it can be produced in the form of overlapping paper. Considering this, it is preferable that the ratio of the thickness is less than 0.4. On the other hand, it is difficult to uniformly manufacture microwires having a ratio of less than 0.1 in view of current manufacturing technology, and the magnetic properties required for the detection material tend to decrease rapidly, which is not preferable. Therefore, the ratio between the thickness of the microwire (total diameter) and the thickness of the recording medium is preferably 0.1 to 0.4.
(3) 마이크로와이어의 곡률 및 곡률각 (3) Curvature and angle of curvature of microwire
본 발명에 따른 출력물 유출 방지용 기록매체에 있어서, 검출층은 0.3㎝-1 < 마이크로와이어의 곡률(K) < 3.0㎝-1의 조건을 만족하는 마이크로와이어를 포함한다.In the recording medium for preventing output leakage according to the present invention, the detection layer includes microwires satisfying the condition of 0.3 cm -1 < curvature (K) of microwire < 3.0 cm -1 .
자성체 검출 물질의 자기적 성질은 그 조성에 크게 좌우되지만, 조성이 동일해도 자성체의 모양에 따라 달라질 수 있다. 특히, 반자장 효과(demagnetizing effect)는 자성체의 모양에 매우 민감한데, 얇고 긴 자성체가 길이 방향으로 자기장에 놓이면 반자장 효과가 매우 작지만, 짧은 쪽이 자기장 방향으로 놓이면 반자장 효과가 매우 커진다. 이는 외부에서 자성체에 자기장이 가해질 때, 자성체가 느끼는 실제 자기장이 그 자성체의 모양과 방향에 따라 크게 달라질 수 있음을 의미한다. 이 때문에 EM 방식의 보안 게이트에서는 검출 물질의 길이 방향성에 따라 감지력의 편차가 매우 크게 나타난다. The magnetic properties of the magnetic material detection material largely depend on its composition, but even if the composition is the same, it may vary depending on the shape of the magnetic material. In particular, the demagnetizing effect is very sensitive to the shape of the magnetic material. When a thin and long magnetic material is placed in a magnetic field in the longitudinal direction, the demagnetizing effect is very small, but when the short side is placed in the magnetic field, the demagnetizing effect is very large. This means that when a magnetic field is applied to a magnetic material from the outside, the actual magnetic field felt by the magnetic material may vary greatly depending on the shape and direction of the magnetic material. For this reason, in the EM-type security gate, the detection power varies greatly depending on the longitudinal direction of the detection material.
출력물 유출 방지용 기록매체는 제지회사의 초지기를 이용하여 생산되는데, 기본적으로 초지기에서 생산되는 종이에서 섬유소나 길다란 형태의 추가 물질 등은 MD 방향 (세로 방향)으로 배향하는 경향이 있다. 따라서 보안용지는 CD 방향 (가로 방향)의 마이크로와이어 개수를 기준으로 생산되어야 우수한 감지력을 확보할 수 있다. 그러나 이는 MD 방향으로는 필요한 것보다 다량의 마이크로와이어가 삽입되도록 할 것이므로, 제품 단가를 상당히 상승시키는 요인이 된다. 본 발명에서는 기록매체의 세로 방향에 평행한 직선과 만나는 각도가 45도 미만으로 배치된 마이크로와이어를 MD 방향의 마이크로와이어, 그 각도가 45도 이상으로 배치된 마이크로와이어를 CD 방향의 마이크로와이어라 칭한다.The recording medium for preventing the leakage of printed matter is produced using a paper machine of a paper company. Basically, in the paper produced by the paper machine, additional materials such as cellulose or elongated materials tend to be oriented in the MD direction (vertical direction). Therefore, the security paper must be produced based on the number of microwires in the CD direction (horizontal direction) to secure excellent sensing power. However, since this will cause a large amount of microwires to be inserted in the MD direction than necessary, it is a factor that significantly increases the unit cost of the product. In the present invention, microwires arranged at an angle of less than 45 degrees with a straight line parallel to the vertical direction of the recording medium are referred to as microwires in the MD direction, and microwires arranged at an angle of 45 degrees or more are referred to as microwires in the CD direction. .
초지기를 이용한 기록매체의 생산 중에 검출 물질의 MD/CD 비율을 개선할 수 있다면 검출 물질의 방향성에 따른 검출 감지력 편차 문제를 해결할 수 있을 것이나, 공정 설비를 보완하지 않고는 MD/CD 비율이 개선이 어렵다. 이에 따라 본 발명에서는 기존의 초지기를 이용하여 보안용 기록매체를 제조하되, 검출 물질인 마이크로와이어가 휘어진 형태, 즉 원호 모양인 것을 사용함으로써 EM 방식의 보안 게이트에서의 방향성 문제를 해결하였다.If the MD/CD ratio of the detection material can be improved during the production of a recording medium using a paper machine, the problem of detection detection power deviation according to the directionality of the detection material can be solved, but the MD/CD ratio cannot be improved without supplementing the process equipment. difficult. Accordingly, in the present invention, a security recording medium is manufactured using an existing paper machine, but the direction problem in the EM type security gate is solved by using a curved shape, that is, an arc shape, of a microwire, which is a detection material.
[식 1][Equation 1]
도 1a 및 상기 식 1에서 보는 것과 같이, 원에서의 곡률(K)은 반지름의 길이로부터 계산할 수 있다. 도 1a에서 P, P'을 마이크로와이어의 양 끝이라고 하면 Δs는 마이크와이어의 길이, Δθ는 곡률각(라디안)에 해당한다. 도 1b는 기록매체의 마이크로와이어의 곡률을 계산하기 위해 지름을 측정하는 한 예를 보여준다.As shown in FIG. 1A and Equation 1, the curvature K in the circle can be calculated from the length of the radius. In FIG. 1A, if P and P' are both ends of the microwire, Δs corresponds to the length of the microwire, and Δθ corresponds to the angle of curvature (radians). 1B shows an example of measuring a diameter to calculate a curvature of a microwire of a recording medium.
본 발명에서는 검출층에 휘어진 형태의 마이크로와이어, 구체적으로는 0.3㎝-1 < 마이크로와이어의 곡률(K) < 3.0㎝-1의 조건을 만족하는 마이크로와이어를 포함시킴으로써 EM 방식의 보안 게이트에서의 방향성에 따른 감지력 편차를 최소화한다. 마이크로와이어의 곡률이 0.3㎝-1 미만이면 곡률 효과가 적어 보안 게이트에서의 방향성 문제가 거의 개선되지 않으며, 마이크로와이어의 곡률이 3.0㎝-1를 초과하면 방향성 문제는 없으나, 전체적인 감지력이 급속하게 낮아져서 검출 물질로서의 역할을 제대로 수행하지 못하는데, 이는 반자장 효과가 갑자기 커지기 때문인 것으로 보인다.In the present invention, by including a microwire in a curved form in the detection layer, specifically, a microwire satisfying the condition of 0.3 cm -1 < microwire curvature (K) < 3.0 cm -1 , the directionality in the security gate of the EM method to minimize the deviation in sensing power. If the curvature of the microwire is less than 0.3 cm -1 , the curvature effect is small, so the directionality problem in the security gate is hardly improved . It does not perform its role as a detection material properly, which seems to be due to the sudden increase in the anti-magnetic field effect.
본 발명에 따른 출력물 유출 방지용 기록매체에 있어서, 검출층은 곡률각이 0.3 ~ 1.5 라디안인 마이크로와이어를 포함할 수 있다. 상기 식 1에서 곡률각(Δθ)는 곡률 x 와이어 길이로 계산되는 값으로, 휘어진 마이크로와이어 양 끝의 각도 차이를 나타낸다. 마이크로와이어의 곡률각이 0.3 라디안 미만이면 곡률 효과가 적어 보안 게이트에서의 방향성 문제가 거의 개선되지 않으며, 마이크로와이어의 곡률각이 1.5 라디안을 초과하면 방향성 문제는 없으나, 곡률이 지나치게 큰 경우와 마찬가지로 반자장 효과가 커져서 검출 물질로서의 기능이 저하될 수 있다.In the recording medium for preventing output leakage according to the present invention, the detection layer may include a microwire having a curvature angle of 0.3 to 1.5 radians. In Equation 1, the curvature angle (Δθ) is a value calculated as curvature x wire length, and represents the difference in angle between both ends of the bent microwire. If the curvature angle of the microwire is less than 0.3 radian, the curvature effect is small, so the directionality problem in the security gate is hardly improved. The magnetic field effect may be increased and the function as a detection material may be deteriorated.
본 발명에 있어서, 전자기(EM) 방식의 보안 게이트에서도 잘 감지되고 보안 프린터에서도 제대로 인식되도록 하기 위해서는 출력물 유출 방지용 기록매체가 상술한 (1) 내지 (3)의 조건을 만족하는 마이크로와이어를 적어도 일부, 바람직하게는 70% 이상 포함하는 것이 좋다. 마이크로와이어 100%가 상술한 (1) 내지 (3)의 조건을 모두 만족하도록 할 수는 있으나, 이 경우 제조 비용이 지나치게 상승할 수 있고, 마이크로와이어 제조 공정상 이러한 조건을 모두 만족하지 못하는 마이크로와이어가 포함될 수도 있다. 또한, 검출 물질로 포함되는 마이크로와이어 중에서 70% 이상이 상기 조건을 만족하는 경우 보안 게이트에서 오차 범위 내에서 감지가 가능하다. 따라서, 본 발명에 따른 출력물 유출 방지용 기록매체에 포함되는 전체 마이크로와이어 중 30% 이내에서 상기 (1) 내지 (3)의 조건 중 하나 이상을 만족하지 않는 마이크로와이어가 포함되어도 무방하다.In the present invention, in order to be well detected by an electromagnetic (EM) type security gate and to be properly recognized by a security printer, the recording medium for preventing output leakage includes at least some microwires satisfying the conditions of (1) to (3) described above. , Preferably it is good to contain 70% or more. Although 100% of the microwire may satisfy all of the conditions of (1) to (3) described above, in this case, the manufacturing cost may be excessively increased, and the microwire that does not satisfy all of these conditions in the microwire manufacturing process may be included. In addition, when 70% or more of the microwires included as the detection material satisfy the above conditions, the security gate can detect within an error range. Accordingly, within 30% of the total microwires included in the recording medium for preventing output leakage according to the present invention, microwires that do not satisfy one or more of the conditions (1) to (3) may be included.
본 발명에 있어서, 상기 마이크로와이어로는 상술한 (1) 내지 (3)의 조건을 만족하는 한 어떤 방법으로 제조된 것이라도 사용할 수 있다. 그 예로는 in-rotating-water quenching 법, cold drawn 법, melt extraction 법, quenching-and-drawing 법, Taylor-Ulitovsky 법, Adar-Bolotinsky 법 등을 들 수 있으나, 이에 한정되는 것은 아니다.In the present invention, as the microwire, any one manufactured by any method can be used as long as the conditions of (1) to (3) are satisfied. Examples thereof include, but are not limited to, in-rotating-water quenching method, cold drawn method, melt extraction method, quenching-and-drawing method, Taylor-Ulitovsky method, Adar-Bolotinsky method, and the like.
(4) 마이크로와이어들 사이의 거리(4) distance between microwires
본 발명의 한가지 구체례에 따른 출력물 유출 방지용 기록매체에서 검출층에 포함되는 마이크로와이어에서 서로 가장 근접한 마이크로와이어들 사이의 거리는 3.0cm 미만일 수 있다. 마이크로와이어 사이의 거리가 3.0cm 이상으로 멀어지면 보안 프린터에서의 식별 인식률이 낮아지는 경향이 있기 때문이다. 따라서, 출력물 유출방지 시스템에 보안 프린터가 구비되는 경우 보안 프린터에서의 식별 인식률을 확보하기 위해 상술한 (4)의 조건을 더 만족하도록 하는 것이 바람직할 수 있다.The distance between the microwires closest to each other in the microwires included in the detection layer in the recording medium for preventing output leakage according to one embodiment of the present invention may be less than 3.0 cm. This is because, if the distance between the microwires is greater than 3.0 cm, the identification recognition rate in the security printer tends to decrease. Therefore, when a security printer is provided in the output leakage prevention system, it may be desirable to further satisfy the condition of (4) above in order to secure an identification recognition rate in the security printer.
보안 게이트의 감지에서는 검출 물질의 자성(magnetic)이 중요한 요인이지만, 보안 프린터에서의 인식률에는 인식 가능한 특정 금속의 존재 여부가 중요한 요인이 된다. 보안 프린터에도 자성을 이용하는 인식 방식을 도입할 수 있지만, 이 경우 비용이 상승하고 장비 구성이 복잡해지기 때문에 현재 상용화된 보안 프린터는 금속 탐지 방식이 주를 이룬다.Although the magnetic property of a detection material is an important factor in the detection of a security gate, the presence or absence of a specific recognizable metal is an important factor in the recognition rate in a security printer. Although a recognition method using magnetism can be introduced to security printers, in this case, the cost increases and the equipment configuration becomes complicated.
본 발명에 있어서, 상기 마이크로와이어는 금속 코어 및 상기 금속 코어에 코팅된 절연층을 포함하는 것일 수 있다. 상기 금속 코어는 Co, Fe, Cr, Si 및 B를 포함하고, 상기 절연층은 유리 재질이고, 그 두께는 0.5 내지 3㎛일 수 있다. 본 발명에서는 마이크로와이어를 구성하는 금속 코어가 Co, Fe, Cr, Si 및 B를 포함하도록 함으로써 보안 게이트에서의 검출력과 보안 프린터에서의 인식률을 필요한 수준으로 확보할 수 있게 된다.In the present invention, the microwire may include a metal core and an insulating layer coated on the metal core. The metal core may include Co, Fe, Cr, Si, and B, and the insulating layer may be made of glass, and the thickness thereof may be 0.5 to 3 μm. In the present invention, since the metal core constituting the microwire contains Co, Fe, Cr, Si and B, it is possible to secure the detection power in the security gate and the recognition rate in the security printer to a required level.
본 발명에 있어서, 마이크로와이어의 단면 직경은 자기적으로 의미가 있는 금속 코어의 직경을 의미하며, 마이크로와이어의 두께는 금속 코어 및 절연층을 포함하는 전체 직경을 의미한다.In the present invention, the microwire The cross-sectional diameter means the diameter of the magnetically meaningful metal core, and the thickness of the microwire means the total diameter including the metal core and the insulating layer.
본 발명에 따른 출력물 유출 방지용 기록매체는 상기 검출층의 일면 또는 양면에 마이크로와이어가 혼입되지 않은 기재의 층을 더 포함할 수 있다. 또한, 본 발명에 따른 출력물 유출 방지용 기록매체는 검출층의 일면에 마이크로와이어가 혼입되지 않은 기재의 층이 구비된 2겹지 2개 이상이 접착층을 사이에 두고 적층된 4겹지 이상의 합지 형태일 수 있다. 이때 상기 접착층은 2겹지의 검출층의 표면과 접하도록 구성될 수 있다.The recording medium for preventing output leakage according to the present invention may further include a substrate layer in which microwires are not incorporated on one or both sides of the detection layer. In addition, the recording medium for preventing output leakage according to the present invention may be in the form of a four-ply or more laminated paper in which two or more two-ply papers having a layer of a substrate not mixed with microwires on one side of the detection layer are stacked with an adhesive layer therebetween. . In this case, the adhesive layer may be configured to be in contact with the surface of the detection layer of the two-ply paper.
본 발명에 따른 출력물 유출 방지용 기록매체의 평량은 최종 제품(기재 및 상기 기재 내부에 마이크로와이어가 혼입된 검출층만으로 된 1겹지, 상기 검출층의 일면에 마이크로와이어가 혼입되지 않은 기재의 층이 구비된 2겹지, 상기 2겹지 2개 이상이 적층된 4겹지 이상의 다겹지, 또는 상기 검출층의 양면에 마이크로와이어가 혼입되지 않은 기재의 층이 구비된 3겹지 포함) 기준으로 30~100g/㎡ 범위이다. 본 발명에 따른 출력물 유출 방지용 기록매체는 기본적으로 프린터용 복사/인쇄용지에 해당하므로, 기존의 상용 복사/인쇄용지와 유사한 평량을 갖는 것이 좋다. 평량이 30g/㎡ 보다 낮으면 마이크로와이어가 혼입된 형태로 종이를 제조하는 것이 어렵고 너무 얇아서 사용하기 불편하며, 평량이 100g/㎡ 보다 높으면 제조 원가가 상승하고 너무 두꺼워서 사용성이 떨어지며 인쇄 품질이 저하될 수 있다.The basis weight of the recording medium for preventing output leakage according to the present invention is a final product (a single-ply paper consisting only of a substrate and a detection layer in which microwires are mixed in the substrate, and a layer of the substrate in which microwires are not mixed on one side of the detection layer is provided 30 to 100 g / m 2 based on double-layered paper, multi-ply paper with four or more layers stacked with two or more of the two-ply paper, or three-ply paper with a substrate layer in which microwires are not mixed on both sides of the detection layer) to be. Since the recording medium for preventing output leakage according to the present invention basically corresponds to copy/printing paper for a printer, it is preferable to have a basis weight similar to that of existing commercial copy/printing paper. If the basis weight is lower than 30 g/m2, it is difficult to manufacture paper with microwires mixed in, and it is too thin to use. can
본 발명에 따른 출력물 유출 방지용 기록매체는 장망 초지기, 환망 초지기 및 콤비네이션 초지기 등이 구비된 제지회사의 초지기를 사용하여, 예를 들면, 대한민국 공개특허 제2017-0053027호에 기재되어 있는 방법으로 제조될 수 있다. 콤비네이션 초지기를 이용하는 경우 한번에 2겹지, 3겹지, 4겹지 등이 제조될 수 있으며, 이 때 최소 한 층(겹)은 검출 물질로서 마이크로와이어를 포함하는 검출층이 된다. 또한, 상기 초지기에서 제조된 종이를 베이스 원지(기재)로 사용하여 합지기로 최종 기록매체를 제조할 수 있다. 합지기는 베이스 원지의 일면에 접착제를 코팅하고, 다른 베이스 원지를 합지하여 최종 제품을 만드는 설비이다. 2개의 베이스 원지는 서로 동일한 종류의 원지일 수도 있고, 다른 종류의 원지일 수도 있다. 즉, 베이스 원지가 2개인 경우 이들은 각각 마이크로와이어가 혼입되거나 혼입되지 않은 것, 1겹지 또는 2겹지 이상일 수 있다. 예를 들어, 1개의 베이스 원지가 마이크로와이어가 혼입된 기재(즉, 검출층) 및 마이크로와이어가 혼입되지 않은 기재의 층으로 이루어진 2겹지이고, 다른 1개의 베이스 원지가 마이크로와이어가 혼입되지 않은 기재로 이루어진 1겹지인 경우 최종 제품은 3겹지의 종이가 될 수 있다.The recording medium for preventing output leakage according to the present invention is manufactured by using a paper machine of a paper company equipped with a Jangmang paper machine, a Hwanmang paper machine and a combination paper machine, for example, by the method described in Korean Patent Application Laid-Open No. 2017-0053027. can When using a combination paper machine, 2-ply, 3-ply, 4-ply, etc. can be manufactured at a time, and at this time, at least one layer (ply) becomes a detection layer including microwires as a detection material. In addition, the final recording medium may be manufactured using a laminating machine using the paper manufactured in the paper machine as a base stock (substrate). A laminating machine is a facility that coats one side of a base base paper with an adhesive and laminates the other base base paper to make a final product. The two base base papers may be the same kind of base paper or different kinds of base paper. That is, when there are two base base papers, they may be one in which microwires are mixed or not, one-ply paper or two-ply paper or more, respectively. For example, one base stock paper is a two-ply paper composed of a layer of a substrate in which microwires are incorporated (that is, a detection layer) and a substrate in which microwires are not incorporated, and the other base stock paper is a substrate in which microwires are not incorporated. In the case of one-ply paper made of , the final product may be three-ply paper.
본 발명에 따른 출력물 유출 방지용 기록매체는 기본적으로 프린터용 복사/인쇄용지에 해당하므로, 기재의 재질은 마이크로와이어의 혼입 여부와 무관하게 복사지의 대부분을 차지하는 백상지일 수 있으나, 박엽지여도 무방하지만 그 조성은 백상지와 유사한 것일 수 있다. Since the recording medium for preventing output leakage according to the present invention basically corresponds to copying/printing paper for printers, the material of the substrate may be white paper which occupies most of the copy paper regardless of whether microwires are mixed , but it may be thin paper, but the The composition may be similar to that of white paper.
최종 제품의 겹지 형태가 출력물 유출 방지용 기록매체의 보안 게이트에서의 검출력이나 보안 프린터에서의 인식률에 영향을 미치는 것은 아니다. 다만, 출력물 유출 방지용 기록매체가 3겹지 이상이고, 내층 중 최소 한 층이 기재 내에 마이크로와이어가 혼입된 검출층이며, 기록매체의 가장 바깥 쪽의 양면이 마이크로와이어가 혼입되지 않은 기재의 층으로 구성되는 경우 마이크로와이어 돌출에 의한 피부 찔림 등의 문제를 일으키지 않는다는 점에서 유리할 수 있다.The layered shape of the final product does not affect the detection power at the security gate of the recording medium for preventing printouts or the recognition rate in the security printer. However, the recording medium for preventing output leakage is three or more layers, at least one of the inner layers is a detection layer in which microwires are mixed in the substrate, and the outermost both sides of the recording medium are composed of a layer of the substrate in which microwires are not mixed. It may be advantageous in that it does not cause problems such as skin puncture due to microwire protrusion.
실시예Example
이하에서는 본 발명을 실시예를 통해 더욱 상세히 설명한다. 그러나 이들 실시예는 본 발명의 예시에 불과한 것이며, 본 발명의 범위를 실시예의 범위로 한정하고자 하는 것이 아니다.Hereinafter, the present invention will be described in more detail through examples. However, these examples are merely illustrative of the present invention, and are not intended to limit the scope of the present invention to the scope of the present invention.
실시예 1 내지 13Examples 1 to 13
단면 직경이 5~25㎛이고, Fe, Co, Cr, B 및 Si를 포함하는 비정질 합금 형태의 금속 코어, 및 유리 재질(이산화규소)이고, 두께가 0.5~3㎛인 절연층을 포함하는 마이크로와이어를 변형/수정된 테일러-울리토프스키 방법으로 제조하고, 조건 (1) 내지 (3)이 하기 표 1에 나타낸 값을 가지는 마이크로와이어를 준비하였다.Micro having a cross-sectional diameter of 5 to 25 μm, a metal core in the form of an amorphous alloy containing Fe, Co, Cr, B and Si, and an insulating layer made of glass (silicon dioxide) and having a thickness of 0.5 to 3 μm Wires were prepared by the modified/modified Taylor-Ulitowski method, and microwires in which conditions (1) to (3) had the values shown in Table 1 were prepared.
준비된 마이크로와이어를 슬러리 펄프와 혼합하고, 장망 초지기, 환망 초지기 및 콤비네이션 초지기가 구비된 초지기를 이용하여 공지의 방법(예: 대한민국 공개특허 제2017-0053027호에 기재되어 있는 방법)으로 초지하여 최종 평량이 80g/㎡이고, 조건 (4)가 하기 표 1에 나타낸 값을 가지는 실시예 1 내지 13의 기록매체를 제조하였다.The prepared microwires are mixed with the slurry pulp, and papermaking is performed by a known method (for example, the method described in Korean Patent Application Laid-Open No. 2017-0053027) using a paper machine equipped with a long mesh paper machine, a Hwan mesh machine and a combination paper machine to make final basis weight. The recording media of Examples 1 to 13 were prepared in which the content was 80 g/m 2 and condition (4) had the values shown in Table 1 below.
비교예 1 내지 15Comparative Examples 1 to 15
조건 (1) 내지 (4)가 하기 표 1에 나타낸 값을 갖도록 한 것을 제외하고는 실시예 1과 동일한 방법으로 비교예 1 내지 15의 기록매체를 제조하였다.Recording media of Comparative Examples 1 to 15 were prepared in the same manner as in Example 1, except that conditions (1) to (4) had the values shown in Table 1 below.
조건 (1)~(4)에 대한 설명Description of conditions (1) to (4)
(1) 마이크로와이어의 길이 (Δs)(1) Length of microwire (Δs)
(2) 마이크로와이어의 길이/마이크로와이어의 단면 직경(2) Length of microwire/diameter of cross section of microwire
(3) 마이크로와이어의 곡률(K)(3) Curvature of microwire (K)
(4) 가장 근접한 위치에 존재하는 마이크로와이어들 사이의 거리 (A4 기준)(4) The distance between the microwires in the closest position (based on A4)
곡률각(라디안, Δθ) = K x Δs; 곡률 K = Δθ/Δs = Δθ/RΔθ = 1/RAngle of curvature (radians, Δθ) = K x Δs; Curvature K = Δθ/Δs = Δθ/RΔθ = 1/R
실시예 14 내지 16 및 비교예 15 내지 17Examples 14 to 16 and Comparative Examples 15 to 17
실시예 1, 2 및 5 내지 7에서 사용한 마이크로와이어 (마이크로와이어 A) 및 비교예 1, 5, 9, 12 및 13에서 사용한 마이크로와이어 (마이크로와이어 B)를 사용하여 하기 표 2에 나타낸 조건을 만족하는 기록매체를 제조하였다.The conditions shown in Table 2 below were satisfied using the microwires (microwire A) used in Examples 1, 2, and 5 to 7 and the microwires (microwire B) used in Comparative Examples 1, 5, 9, 12 and 13. A recording medium was prepared.
실험예Experimental example
상기 실시예 1 내지 16 및 비교예 1 내지 17에 대하여 하기와 같은 항목에 대한 평가를 수행하고, 그 결과를 표 3에 나타내었다.Examples 1 to 16 and Comparative Examples 1 to 17 were evaluated for the following items, and the results are shown in Table 3.
1. 보안 게이트 검출 감지력1. Security gate detection detection power
2종의 전자기 방식의 게이트(체크포인트사제 모노 방식 EVOLVE EM 시스템, 에스에스엘티사제 듀얼 방식 EM 시스템)에 기록 매체를 통과시켰을 때의 감도를 측정하여 5점법으로 검출 감도를 표시하였다. 수치가 클수록 감도가 높은 것으로, X는 게이트에서 인식을 하지 못하는 경우이다. 표 3에서 용지 평면 표시에서 대문자는 용지의 세로 방향(A4 용지의 경우 297mm)을, 소문자는 용지의 가로 방향(A4 용지의 경우 210mm)을 의미한다. 도 3은 전자기(EM) 방식의 1인용 보안 게이트에서 A4 크기의 출력물 유출 방지용 기록 매체의 검출 테스트시의 용지 방향의 평면을 도시한 것이다(Zx 평면: A4 용지를 세로로 가슴에 품고 지나갈 때; Zy 평면: A4 용지를 세로로 옆구리에 들고 지나갈 때).Sensitivity when a recording medium was passed through two electromagnetic gates (mono type EVOLVE EM system manufactured by Checkpoint Corporation, dual type EM system manufactured by SSL T) was measured, and the detection sensitivity was indicated by a 5-point method. The higher the number, the higher the sensitivity, and X is not recognized by the gate. In Table 3, in the paper flat display, uppercase letters mean the vertical direction of the paper (297mm for A4 paper), and lowercase letters mean the horizontal direction of the paper (210mm for A4 paper). 3 is a view showing the plane of the paper direction during the detection test of a recording medium for preventing leakage of A4 size output in an electromagnetic (EM) type single-person security gate (Zx plane: when passing an A4 paper vertically in the chest; Zy plane: when passing an A4 sheet vertically by the side).
2. 보안 프린터 식별 인식력2. Secure printer identification awareness
보안 프린터(코레이트사제 CLP-755N_M-미세 레이저 프린터)에 기록 매체를 인쇄하였을 때 보안용지로 인식하여 실제 인쇄가 진행되는 정도를 확인하여 5점법으로 식별 인식력을 표시하였다(수치가 클수록 인식력이 높은 것을 나타냄). When the recording medium was printed on a security printer (CLP-755N_M-fine laser printer manufactured by Korate), it was recognized as security paper and the actual printing progress was checked, and the identification and recognition power was displayed in a 5-point method (the larger the number, the higher the recognition power). indicates that).
3. 백감도3. White sensitivity
용지의 일부분을 미국 X-rite사 eXact 측정기를 이용하여 측정하였다. 측정값이 클수록 육안 관찰 시 백색으로 보이는 것을 의미한다.A portion of the paper was measured using an eXact meter from X-rite, USA. The larger the measured value, the more it appears white when observed with the naked eye.
상기 표 3에 따르면, 조건 (1) 내지 (3)의 값이 본 발명의 범위를 만족하는 실시예 1 내지 13의 출력물 유출 방지용 기록매체는 전자기 방식 보안 게이트에서의 감지력이 우수한 것으로 확인되었다. 실시예 1 내지 12는 조건 (4) 가장 근접한 위치에 존재하는 마이크로와이어들 사이의 거리 < 3.0cm 역시 만족하는 것으로, 보안 프린터에서의 식별 인식력 역시 우수하였다.비교예 1 내지 14는 기록매체 100㎠ 당 마이크로와이어 30~300개의 조건 및 조건 (1) 내지 (3) 중 어느 하나 이상이 본 발명의 범위를 벗어난 경우로, 보안 게이트에서의 검출 감지력이 부족하거나, 백감도가 110 미만으로 낮아서 인쇄용지(복사용지)이면서 동시에 출력물 유출 방지용 기록매체로 사용하기에 적합하지 않은 것으로 확인되었다.
According to Table 3, it was confirmed that the recording medium for preventing output leakage of Examples 1 to 13, in which the values of conditions (1) to (3) satisfies the range of the present invention, have excellent sensing power in the electromagnetic type security gate. Examples 1 to 12 satisfy condition (4) the distance between the microwires present in the closest position < 3.0 cm, and thus the identification recognition power in the security printer is also excellent. Comparative Examples 1 to 14 are recording medium 100 cm2 When any one or more of the conditions (1) to (3) of 30 to 300 per microwire is out of the scope of the present invention, the detection detection power at the security gate is insufficient, or the white sensitivity is low as less than 110 for printing paper It was confirmed that it was not suitable for use as a recording medium for preventing the leakage of printouts as well as (copy paper).
비교예 4는 1.5cm 길이의 마이크로와이어를 사용한 것, 즉 조건 (1)이 본 발명의 상한 값을 벗어난 것으로, 보안용 기록매체 제조 시 분산성이 나쁘고, 정선 공정에서 제거되는 등의 이유로 보류율이 60% 미만(마이크로와이어의 길이가 1.0cm 이하일 때의 보류율은 80~95%임)으로 낮아져서 길어진 만큼보다도 단가가 더 상승하였다. 물성 측면에서 보면 듀얼 방식의 EM 게이트에서는 감지력이 좋은 편이나 모노 방식의 보안 게이트에서는 Zx 평면의 감지력이 보통 수준으로 낮았는데, 이는 곡률이 본 발명의 범위를 만족하지만 길이가 지나치게 길어서 곡률각이 커지고(2.143), 그 결과 반자장 효과가 커졌기 때문으로 보인다(실시예 1 내지 12의 경우 모두 곡률각이 1.5 미만(0.31 ~ 1.48)임).Comparative Example 4 used a 1.5 cm long microwire, that is, condition (1) was outside the upper limit of the present invention, and the retention rate was poor for reasons such as poor dispersibility when manufacturing a security recording medium, and removal in the selection process. This lowered to less than 60% (the retention rate when the length of the microwire is 1.0 cm or less is 80 to 95%), and the unit price rose more than the lengthened amount. In terms of physical properties, the detection power of the dual-type EM gate is good, but the detection power of the Zx plane was low in the mono-type security gate. (2.143), as a result, it seems that the anti-magnetic field effect is increased (in all of Examples 1 to 12, the curvature angle is less than 1.5 (0.31 to 1.48)).
비교예 1, 5 및 9의 경우, 조건 (1)이 본 발명의 하한 값을 벗어난 것으로, 마이크로와이어의 길이가 0.5cm 미만일 때에는 조건 (2)를 만족하더라도(비교예 1) 보안 게이트에서의 감지력이 매우 낮은 것을 볼 수 있다. 마이크로와이어의 종횡비가 중요하나 기본적으로 최소 길이 이상이 되어야 EM 방식에서의 감지에서 우수한 효과를 보이는 것으로 보인다.In the case of Comparative Examples 1, 5, and 9, condition (1) is outside the lower limit of the present invention, and when the length of the microwire is less than 0.5 cm, even if condition (2) is satisfied (Comparative Example 1) Sensing power at the security gate You can see this very low. Although the aspect ratio of the microwire is important, it seems that the EM method has an excellent effect when it is basically more than the minimum length.
비교예 3의 경우, 조건 (3)이 본 발명의 상한 값을 초과한 것(곡률 3.45cm-1)으로, 마이크로와이어의 곡률 효과와 상관없이 검출 물질로서의 기능이 떨어져서 감지력이 급속히 낮아졌다. 곡률각도 2 이상으로 반자장 효과의 영향도 있는 것으로 분석되었다.In the case of Comparative Example 3, the condition (3) exceeded the upper limit of the present invention (curvature 3.45 cm -1 ), regardless of the curvature effect of the microwire, the function as a detection material fell, and the detection power was rapidly lowered. It was analyzed that the effect of the anti-magnetic field effect was also present with a curvature angle of 2 or more.
비교예 8, 10, 12, 13 및 14는 조건 (3)이 본 발명의 하한 값을 벗어난 경우(비교예 12 내지 14는 직선 형태의 와이어 사용)로, 곡률 효과가 작거나 없어서 보안 게이트에서의 방향성 문제가 개선되지 않은 것으로 확인되었다.Comparative Examples 8, 10, 12, 13 and 14 are cases in which condition (3) is outside the lower limit of the present invention (Comparative Examples 12 to 14 use a straight wire), and the curvature effect is small or absent in the security gate. It was confirmed that the directionality problem was not improved.
비교예 2 및 7은 100㎠ 당 마이크로와이어의 개수가 30개 미만인 경우로, 마이크로와이어의 개수가 부족하여 EM 게이이트에서 거의 감지되지 않았다. 또한, 검출층에서 가장 근접한 위치에 존재하는 마이크로와이어들 사이의 거리 (조건 (4))가 3.0cm를 초과하는 것으로, 마이크로와이어 사이의 거리가 멀어서 보안 프린터의 식별 센서가 짧은 시간 안에 이를 인지할 확률이 낮아져서 보안용지로 인식하지 못하는 경우도 발생하였다.In Comparative Examples 2 and 7, the number of microwires per 100 cm 2 was less than 30, and the number of microwires was insufficient and thus hardly detected in the EM gate. In addition, if the distance between the microwires that are closest to the detection layer (condition (4)) exceeds 3.0 cm, the distance between the microwires is too long so that the identification sensor of the security printer cannot recognize it in a short time. The probability was lowered and there were cases where it was not recognized as a security paper.
비교예 6 및 11은 100㎠ 당 와이어 개수가 300개 이상으로, 보안 게이트에서의 감지력이나 보안 프린터에서의 인식력은 우수하지만, 백감도가 110 미만이고, 필요 이상의 마이크로와이어가 사용되어 단가 상승을 초래하였다.In Comparative Examples 6 and 11, the number of wires per 100 cm2 was 300 or more, and the detection power in the security gate or the recognition power in the security printer were excellent, but the white sensitivity was less than 110, and more than necessary microwires were used, resulting in an increase in unit cost did.
한편, 실시예 14 내지 16은 상기 (1) 내지 (3)의 조건을 만족하는 마이크로와이어를 70% 이상 포함하는 기록매체로서, EM 방식 보안 게이트에서의 감지력과 보안 프린터에서의 인식력이 모두 우수한 것으로 확인되었다. 이에 비해, 비교예 15 내지 17은 상기 (1) 내지 (3) 중 어느 하나 이상을 만족하지 못하는 마이크로와이어를 30%를 초과하여 포함하는 기록매체로서, EM 게이트에서의 감지력이 부족한 것으로 확인되었다.On the other hand, Examples 14 to 16 are recording media containing 70% or more of microwires satisfying the conditions of (1) to (3), and both the detection power in the EM method security gate and the recognition power in the security printer are excellent. Confirmed. On the other hand, Comparative Examples 15 to 17 are recording media containing more than 30% of microwires that do not satisfy any one or more of (1) to (3), and it was confirmed that the sensing power of the EM gate was insufficient.
상술한 바와 같이, 본 발명에 따른 출력물 유출 방지용 기록매체는 휘어진 형태, 즉 원호 형태의 검출용 마이크로와이어를 다수 사용하여 전자기 방식의 보안 게이트에서의 방향성 문제가 개선되고, 그 결과로 보안 게이트에서의 감지력이 향상되었다.As described above, in the recording medium for preventing output leakage according to the present invention, the problem of directionality in the electromagnetic type security gate is improved by using a large number of curved, that is, arc-shaped detection microwires, and as a result, the Sensitivity has been improved.
Claims (10)
- 기재, 및 상기 기재의 내부에 분산되어 혼입되고, 하기 (1) 내지 (3)의 조건을 만족하는 마이크로와이어를 포함하는 검출층A detection layer comprising a substrate, and microwires dispersed and mixed in the substrate and satisfying the conditions of (1) to (3) below(1) 0.5cm ≤ 마이크로와이어의 길이 ≤ 1.0cm,(1) 0.5cm ≤ the length of the microwire ≤ 1.0cm,(2) 200 < 마이크로와이어의 길이/마이크로와이어의 단면 직경 < 2000, 및(2) 200 < length of microwire/diameter of cross-section of microwire < 2000, and(3) 0.3㎝-1 < 마이크로와이어의 곡률(K) < 3.0㎝-1 (3) 0.3 cm -1 < Curvature (K) of microwire < 3.0 cm -1을 포함하는 출력물 유출 방지용 기록매체로서,As a recording medium for preventing output leakage comprising a,기록매체 100㎠ 당 30 내지 300개의 마이크로와이어를 포함하는 것인 출력물 유출 방지용 기록매체.A recording medium for preventing the leakage of output that contains 30 to 300 microwires per 100 cm 2 of the recording medium.
- 제1항에 있어서, 상기 검출층에 포함되는 마이크로와이어의 70% 이상이 상기 (1) 내지 (3)의 조건을 만족하는 것인 출력물 유출 방지용 기록매체.The recording medium for preventing output leakage according to claim 1, wherein 70% or more of the microwires included in the detection layer satisfy the conditions (1) to (3).
- 제1항 또는 제2항에 있어서, 상기 검출층은 하기 (4)의 조건을 만족하는 것인 출력물 유출 방지용 기록매체:The recording medium for preventing output leakage according to claim 1 or 2, wherein the detection layer satisfies the following condition (4):(4) 가장 근접한 위치에 존재하는 마이크로와이어들 사이의 거리 < 3.0cm.(4) The distance between the microwires present in the closest position < 3.0cm.
- 제1항에 있어서, 상기 마이크로와이어는 금속 코어 및 상기 금속 코어에 코팅된 절연층을 포함하는 것인 출력물 유출 방지용 기록매체.The recording medium of claim 1, wherein the microwire includes a metal core and an insulating layer coated on the metal core.
- 제4항에 있어서, 상기 절연층은 유리 재질이고, 두께가 0.5 내지 3㎛인 출력물 유출 방지용 기록매체.The recording medium of claim 4 , wherein the insulating layer is made of glass and has a thickness of 0.5 to 3 μm.
- 제4항에 있어서, 상기 금속 코어는 Co, Fe, Cr, Si 및 B를 포함하는 것인 출력물 유출 방지용 기록매체.5. The recording medium of claim 4, wherein the metal core includes Co, Fe, Cr, Si and B.
- 제1항에 있어서, 상기 검출층의 일면 또는 양면에 마이크로와이어가 혼입되지 않은 기재의 층을 더 포함하는 것인 출력물 유출 방지용 기록매체.The recording medium for preventing output leakage according to claim 1, further comprising a layer of a substrate in which microwires are not incorporated on one or both surfaces of the detection layer.
- 제7항에 있어서, 상기 검출층의 일면에 마이크로와이어가 혼입되지 않은 기재의 층이 구비된 2겹지 2개 이상이 접착층을 사이에 두고 적층된 4겹지 이상의 합지 형태인 출력물 유출 방지용 기록매체.The recording medium for preventing output leakage according to claim 7, wherein two or more two-ply papers having a substrate layer in which microwires are not mixed are provided on one surface of the detection layer and in the form of four or more laminated papers stacked with an adhesive layer therebetween.
- 제8항에 있어서, 상기 접착층은 2겹지의 검출층의 표면과 접하도록 적층되는 것인 출력물 유출 방지용 기록매체.The recording medium of claim 8 , wherein the adhesive layer is laminated so as to be in contact with the surface of the detection layer of the two-ply paper.
- 제1항 또는 제2항에 있어서, 상기 검출층은 곡률각 0.3 내지 1.5 라디안의 마이크로와이어를 포함하는 것인 출력물 유출 방지용 기록매체.The recording medium of claim 1 or 2, wherein the detection layer includes microwires having a curvature angle of 0.3 to 1.5 radians.
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KR1020210051381A KR102497168B1 (en) | 2021-04-20 | 2021-04-20 | Writing/reading medium for preventing leakage of hard copy |
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Citations (5)
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JP2008196096A (en) * | 2007-01-16 | 2008-08-28 | Oji Paper Co Ltd | Anti-counterfeit paper |
KR20160140573A (en) * | 2015-04-20 | 2016-12-07 | 타깃 - 이에이에스 리미티드 | Recording medium |
KR20170005728A (en) * | 2015-07-06 | 2017-01-16 | 한규남 | Writing/reading papers for security |
KR20170011286A (en) * | 2015-07-22 | 2017-02-02 | 주식회사 소재의맥 | Printing paper distinguish device unit of image forming system for maintenance of public security |
KR20200130001A (en) * | 2019-05-10 | 2020-11-18 | 주식회사 소재의맥 | Writing/reading means for security and preparing method thereof |
Family Cites Families (2)
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JP2008303522A (en) | 2007-06-08 | 2008-12-18 | Koreit Co Ltd | Printing paper for security and method for producing the same |
KR101778520B1 (en) | 2015-11-05 | 2017-09-18 | 국일제지 주식회사 | Method for manufacturing security paper containing soft magnetic metal wire and security paper utilizing the same |
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JP2008196096A (en) * | 2007-01-16 | 2008-08-28 | Oji Paper Co Ltd | Anti-counterfeit paper |
KR20160140573A (en) * | 2015-04-20 | 2016-12-07 | 타깃 - 이에이에스 리미티드 | Recording medium |
KR20170005728A (en) * | 2015-07-06 | 2017-01-16 | 한규남 | Writing/reading papers for security |
KR20170011286A (en) * | 2015-07-22 | 2017-02-02 | 주식회사 소재의맥 | Printing paper distinguish device unit of image forming system for maintenance of public security |
KR20200130001A (en) * | 2019-05-10 | 2020-11-18 | 주식회사 소재의맥 | Writing/reading means for security and preparing method thereof |
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