KR102183210B1 - Security feature manufactured by lamination, the manufacturing method and apparatus of the same - Google Patents

Abstract

A first film having a microlens array formed on the first substrate and a second film having a micro image array formed on the second substrate, wherein the first film and the second film are laminated by a first adhesive layer. The security element is disclosed. The security element according to the present invention is suitable for mass production because it can be manufactured by a roll-to-roll process, it is easy to add additional security features, and is advantageous in printing fine micro images clearly. In addition, a security element manufacturing apparatus and manufacturing method capable of correcting a matching angle between a micro lens array and a micro image array in real time are disclosed.

Description

Security element manufactured from laminated paper, its manufacturing method and manufacturing device {SECURITY FEATURE MANUFACTURED BY LAMINATION, THE MANUFACTURING METHOD AND APPARATUS OF THE SAME}

The present invention relates to a security element manufactured from paper, a method of manufacturing the same, and a manufacturing apparatus, and more particularly, to a technology for manufacturing a security element from which a moire magnified image is observed by a micro lens array and a micro image array. will be.

Security features such as banknotes, securities, gift certificates, passports, ID cards, and security labels are generally used to prevent forgery. In addition, such security factors are increasingly included in products or packaging for genuine product authentication.

As a security element technology used in a security document, a technology that shows a three-dimensional effect using the principle of Moire Magnification is known. For example, in Korean Patent No. 1089435, a microlens array and a micro image array are formed on both sides of a transparent substrate functioning as an optical spacer, so that a three-dimensional moire enlarged image and an ortho-parallactic motion effect are displayed. The technology is disclosed.

Such a security element is manufactured by forming a micro lens array on one surface of a transparent substrate using a photocurable resin or the like, and then forming a micro image array on the opposite surface. However, printing a micro image array on the other surface of a transparent substrate having a micro lens array formed on one surface is difficult to precisely manufacture because the printing smoothness is insufficient. In particular, since the alignment of the micro lens array and the micro image array is very important in order to obtain a desired visual effect, it is required to develop a manufacturing technology capable of manufacturing the security element in which the moiré magnified image is observed precisely and suitable for mass production.

In addition, a resin film is usually used as a transparent substrate, and this resin film has a limitation in clearly printing a fine micro image due to poor ink aptitude.

In addition, in the case of the conventional manufacturing method, when the matching angle between the micro lens array and the micro image array is different, there is no method for correcting it during the manufacturing process, so there is a problem that a defect is likely to occur and the manufacturing cost is increased. .

In addition, although the conventional security element includes a micro lens array and a micro image array, there is a limitation that it is not completely free from forgery or alteration through precise copying or scanning.

In addition, in the case of a conventional security element, only the genuine product authentication function is emphasized, but the tamper evidence function is not provided.

Korean Patent Registration No. 1089435

The present invention has been made to solve the problems of the prior art as described above, and an object of the present invention is to provide a manufacturing technology capable of manufacturing a security element in which an enlarged moire image is observed more precisely and suitable for mass production.

In addition, an object of the present invention is to enable clear printing even when the size of a micro image array that allows an enlarged moiré image to be observed is fine.

Another object of the present invention is to provide a method of correcting in real time when a matching angle between a micro lens array and a micro image array is different in a process of manufacturing a security element in which an enlarged moire image is observed.

In addition, another object of the present invention is to further enhance the security of a security element in which an enlarged moire image is observed to more reliably prevent forgery or alteration by precision copying or scanning.

In addition, another object of the present invention is to provide an operation identification function to a security element in which an enlarged moire image is observed.

The object of the present invention is not limited to the above, and other objects and advantages of the present invention that are not mentioned can be understood by the following description.

The security element according to an embodiment of the present invention for achieving the above object includes a first film having a micro lens array formed on an upper portion of the first substrate and a second film having a micro image array formed on the second substrate. And, the first film and the second film is characterized in that the laminated by the first adhesive layer.

The second substrate may be opaque, and may be a plastic film or paper.

The micro image array may include a first micro image array and a second micro image array, wherein the first micro image array and the second micro image array may be formed on the same surface of the second substrate or may be formed on different surfaces. . In addition, the arrangement period of the first micro image array may be smaller than the arrangement period of the micro lens array, and the arrangement period of the second micro image array may be greater than the arrangement period of the micro lens array.

The second film may further include a latent image layer, an electronic tag, or a retroreflective structure.

A second adhesive layer may be formed on the lower surface of the second film, and the adhesive force of the first adhesive layer may be less than that of the second adhesive layer.

The manufacturing apparatus according to an embodiment of the present invention for manufacturing the above-described security element includes a first film supply unit for supplying a roll-type first film to a lamination unit, and a second film supply unit for supplying a roll type second film to the lamination unit. The film supply unit, the first film supplied from the first film supply unit, and the second film supplied from the second film supply unit are pressed and laminated, and a security element collection unit that collects the laminated security elements and winds them in a roll form. It characterized in that it includes.

Here, the first film supply unit or the second film supply unit may be provided with an adhesive application unit for applying the first adhesive layer on the laminated surface of the first film or the second film. In addition, a lamp for photocuring the first adhesive layer may be provided downstream of the laminated portion.

An adhesive layer and a release paper are formed on the lower surface of the first film, or an adhesive layer and a release paper are formed on the upper surface of the second film, and a release paper recovery roll for removing and collecting the release paper is provided in the first film supply unit or the second film supply unit Can be.

A security element manufacturing apparatus according to an embodiment of the present invention includes an image acquisition device that is provided downstream of the bonding unit to obtain an enlarged moire image recognized from the security element, and receives the obtained image and compares it with a previously stored reference image. The image processing unit may include an image processing unit that receives the comparison result, a control unit that transmits a control signal to the driving unit, and a driving unit that adjusts the supply direction of the first film or the second film according to the control signal.

In addition, one or more guide rolls for guiding the first film or the second film are provided, and the driving unit may adjust a left-right direction or a twist direction of the guide roll.

A security element manufacturing method according to an embodiment of the present invention includes the steps of supplying a first film and a second film, laminating the supplied first film and second film, and a moire enlarged image recognized from the laminated security element. It characterized in that it comprises the step of obtaining, comparing the obtained moire enlarged image and a preset reference image, and adjusting the supply direction of the first film or the second film based on the comparison result.

According to the present invention, by laminating the first film with the micro lens array and the second film with the micro image array together, the security element in which the moire enlarged image is observed can be manufactured to be more precise and suitable for mass production. There is. In particular, since the micro image array is not printed on the other side of the transparent substrate on which the micro lens array is formed, but is printed on a separate second film having excellent printing smoothness, precise micro images can be printed with excellent quality.

In addition, according to the present invention, since it is possible to print the micro image array on a substrate having better printability, such as paper instead of a transparent substrate, there is an effect of being able to print clearly even when the size of the micro image array is fine.

In addition, according to the present invention, it is possible to finely adjust the supply angle of the first film on which the micro lens array is formed and the second film on which the micro image array is formed to the laminated portion in the process of manufacturing the security element in which the moire enlarged image is observed. , When the matching angle between the micro lens array and the micro image array is different, it is possible to correct it in real time.

In addition, according to the present invention, since it is easy to add an additional security feature to the security element where the moire enlarged image is observed, the security of the security element is further strengthened to more reliably prevent forgery and alteration by precision copying or scanning. There is an effect that can be done.

In addition, according to the present invention, by controlling the adhesion between the first film with the micro lens array and the second film with the micro image array, there is an effect that it is possible to impart an operation identification function to a security element in which an enlarged moire image is observed.

However, the effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

1 is a cross-sectional view of a security element according to an embodiment of the present invention.
2 is a cross-sectional view of a security element according to another embodiment of the present invention.
3 is a diagram for explaining the visual effect of the security element of FIG. 2.
4 is a modified example of the security element according to the embodiment of FIG. 2.
5 is a cross-sectional view of a security element to which a latent image pattern is added according to an embodiment of the present invention.
6 is a diagram for explaining a security element to which an operation identification function is provided according to an embodiment of the present invention.
7 and 8 are operational conceptual diagrams of a manufacturing apparatus for manufacturing the security element of the present invention.
9 is a functional block diagram of an automatic matching unit according to an embodiment of the present invention.
10 is a flowchart of a method of manufacturing a security element according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention is not limited or limited by the embodiments. In describing the present invention, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In the present invention, the terms'upper' and'lower' should be understood as terms expressing a relative direction, and if one component is formed on the'upper' or'lower' of another configuration, a third It does not completely exclude the intervening of the composition. In addition, numbers (eg, first, second, etc.) used in the description of the present specification are merely identification symbols for distinguishing one component from another component. In describing various embodiments of the present invention, corresponding components will be described with the same names and the same reference numerals.

1 is a cross-sectional view of a security element according to an embodiment of the present invention. Referring to FIG. 1, the security element 1 according to the embodiment of the present invention is formed by laminating a first film 10 and a second film 20.

The first film 10 is a film in which the micro lens array 12 is formed on the first substrate 11, and the second film 20 is a film in which the micro image array 22 is formed thereon. The first film 10 and the second film 20 are each formed and laminated according to a lamination process described later. The first film 10 and the second film 20 may be adhered using the first adhesive layer 31.

The first base material 11 is a configuration for separating the micro lens array 12 and the micro image array 22 by a predetermined distance, and may be a transparent material having a high transmittance in the visible light region, and a flexible film material Can be For example, it may be a plastic material such as polyethylene terephthalate (PET), polycarbonate (PC), polyvinyl chloride (PVC), thermoplastic polyurethane (TPU), polypropylene (PP), and polyethylene (PE).

The thickness of the first substrate 11 may be 0.5 mm or less, and the thickness may be determined according to the depth of focus of the microlens. That is, the thickness of the first substrate 11 may be determined such that the micro image array 22 is positioned within the depth of focus of the micro lens.

The microlens array 12 is a microlens of microscopic size in a planar arrangement, and the shape of the arrangement is any one of a two-dimensional Bravais lattice such as a square arrangement, a rectangular arrangement, a hexagonal arrangement, and a parallelogram arrangement. It can be configured in a form. The arrangement period of the micro lens array 12 may be about 100 μm, but is not limited thereto.

The microlenses constituting the microlens array 12 may be refractive lenses in which a material having a specific refractive index is formed into a curved surface, but is not limited thereto. For example, within a range suitable for the purpose of the present invention, the micro lens 12 is a diffractive lens, a gradient index lens, a Fresnel lens, and other optical systems capable of performing an imaging function are applied. May be.

The second substrate 21 is a configuration for forming the micro image array 22, and a transparent, translucent, or opaque substrate may be freely selected according to a required function. For example, when the security element 1 is formed in the form of a transparent label and the lower printed matter needs to be visually recognized through the label, the second substrate 21 may be selected as a transparent or translucent film. Conversely, when it is not necessary to be transparent, an opaque substrate such as paper may be used in consideration of the printability of the micro image array 22. That is, in the present invention, the second substrate 21 may be a plastic film, paper, or the like, and is not particularly limited as long as it is a material suitable for printing the micro image array 22.

In the case of conventional security elements, micro-image arrays are formed by making recesses in the form of intaglios on the bottom of the transparent film formed on the top surface of the micro lens array and filling ink. There is a limit to expressing the image clearly. In addition, there are cases in which a micro image array is directly printed on the lower surface of the transparent film, but the transparent film has difficulty in forming a fine and clear micro image array due to poor printing aptitude such as ink absorption power, and due to the micro lens array on the upper surface. There is a problem of poor print quality due to poor print smoothness. On the other hand, the present invention uses a method of laminating after printing the micro image array 22 on the second substrate 22 separately from the first substrate 11 on which the micro lens array 12 is formed. By freely selecting the substrate 21, a fine image can be clearly formed, the printing smoothness is excellent in the printing process, and images of various colors can be expressed using various inks.

In the embodiment of FIG. 1, since the micro image array 22 is formed only on the second substrate 21, the thickness of the second substrate 21 can be freely selected. The second substrate 22 may also be a flexible film material.

The micro image array 22 is a planar arrangement of micro-images of fine size, and the shape of the arrangement is any one of a two-dimensional Bravais lattice such as a square arrangement, a rectangular arrangement, a hexagonal arrangement, and a parallelogram arrangement. It can be configured in a form. The arrangement of the micro image array 22 may be the same as the arrangement of the micro lens array 12. The size of each micro image constituting the micro image array 22 may be 100 μm or less, but is not limited thereto.

The micro lens array 12 and the micro image array 22 may be periodically arranged in a first array period and a second array period, respectively. Here, the first arrangement period and the second arrangement period may be different from each other. That is, the second arrangement period may be larger or smaller than the second arrangement period. For this reason, it is possible to provide a three-dimensional effect such that an enlarged moiré image by micro-images is below or above the plane of the security element 1.

Further, the arrangement of the micro lens array 12 and the micro image array 22 may be tilted with a predetermined matching angle. This can lead to various ortho-parallactic motion effects.

The first adhesive layer 31 for laminating the first film 10 and the second film 20 may use an ultraviolet curable adhesive, but is not limited thereto.

2 is a cross-sectional view of a security element 1A according to another embodiment of the present invention. Compared with the security element 1 of FIG. 1, the security element 1A of FIG. 2 is different in that a plurality of micro image arrays 22A and 22B are included. When a plurality of micro-image arrays 22A and 22B are formed, since an enlarged moire image by each micro-image array is observed, a more diverse visual effect can be provided.

That is, the security element 1A is also formed by laminating the first film 10 and the second film 20 through the first adhesive layer 31. The first film 10 is a film in which the micro lens array 12 is formed on the first substrate 11. The second film 20 is formed by printing a micro image array 22 on the second substrate 21, wherein the micro image array 22 includes a first micro image array 22A and a second micro image array ( 22B) may be included.

The first micro image array 22A and the second micro image array 22B may be formed by sequentially printing on the upper surface of the second base material 21, respectively. That is, after first printing the first micro image array 22A on the upper surface of the second base material 21, the second micro image array 22B may be printed next. The first micro image array 22A and the second micro image array 22B may be printed with the same ink or different inks. When printing in different colors, a visual effect in which the enlarged moire image by each micro image array is more clearly distinguished may be provided. 2 illustrates that the first micro image array 22A and the second micro image array 22B overlap in the vertical direction, but the present invention is not limited thereto. The first micro image array 22A and the second micro image array 22B may overlap in a vertical direction, some may overlap, or may not overlap at all.

The arrangement shape of the first micro image array 22A and the second micro image array 22B may be the same as that of the micro lens array 12, and the arrangement period may be different. For example, the arrangement period of the first micro image array 22A is smaller than the arrangement period of the micro lens array 12, and the arrangement period of the second micro image array 22B is less than the arrangement period of the micro lens array 12. It can be largely formed. Therefore, as shown in FIG. 3, the moire enlarged image M1 by the first micro image array 22A is visually recognized as being below the plane of the security element 1A, and the second micro image array 22B The moire enlarged image M2 by may provide a three-dimensional effect visually recognized as if it is above the plane of the security element 1A.

The difference in the arrangement period between the first and second micro image arrays 22A and 22B and the micro lens array 12 is not large, and the first and second micro image arrays 22A with respect to the arrangement period of the micro lens array 12 ( 22B) may be in the range of 0.9 to 1.1.

As a method of making the arrangement periods of the first and second micro image arrays 22A and 22B and the micro lens array 12 different from each other, a method known in the art of implementing a stereoscopic effect using a moire magnification phenomenon may be used. For example, the arrangement period may be changed by designing different intervals between microlenses and intervals between micro images, or by adjusting the matching angle of the array after forming at the same interval.

4 is a modified example of the security element according to the embodiment of FIG. 2. The security element 1B of FIG. 4 is also the same as the security element 1A of FIG. 3 in that a plurality of micro image arrays 22A and 22B are included, but the first micro image array 22A is the second base material ( 21) is different in that the second micro image array 22B is formed on the upper surface of the second base material 21.

The security element 1B of FIG. 4 also has an effect similar to that of the security element 1A of FIG. 3 in that all the magnified moire images by the micro image arrays 22A and 22B can be observed. In addition, since the security element 1B of FIG. 4 prints each micro image array 22A, 22B on different sides of the second substrate 21, printing may be easier even if a plurality of images are overlapped in the vertical direction. have. However, the security element 1B should use a transparent or translucent substrate as the second substrate 21.

The security element 1B of FIG. 4 is a focal plane of the microlens so that both the magnified moire image by the first micro image array 22A and the magnified moire image by the second micro image 22B can be clearly observed. focal plane) may be determined to be positioned between the first micro image array 22A and the second micro image array 22B in a vertical direction. To this end, it may be desirable that the thickness of the second base material 21 is thin. Alternatively, the microlens can be designed to have a relatively deep depth of focus. For example, the ratio of the focal length to the diameter of the micro lens, that is, the F-number may be designed to be 2 or more. F-numbers of 2 or more can be obtained by adjusting the curvature of the micro lens.

Since the security element according to an embodiment of the present invention is manufactured by laminating the first film with the micro lens array and the second film with the micro image array, security is enhanced by adding an additional security feature. It is advantageous. For example, a latent image may be added to the security element. Hereinafter, a security element to which a latent image pattern is added will be described with reference to FIG. 5.

The security element 1C according to the embodiment of FIG. 5 is different from the other embodiments in that the latent layer 25 is added.

That is, the security element 1C is formed by laminating the first film 10 and the second film 20. The first film 10 is a film in which the micro lens array 12 is formed on the first substrate 11, and the second film 20 is a film in which the micro image array 22 is formed thereon. 5 illustrates that the micro image array 22 includes a first micro image array 22A and a second micro image array 22B, only one micro image array may be provided.

The second film 20 of the security element 1C further includes a latent layer 25. The latent image layer 25 is a layer including the latent image pattern 26 and may be formed on the micro image arrays 22A and 22B. The latent image layer 25 may be formed by applying an ultraviolet curable resin after printing the micro image arrays 22A and 22B, and then transferring the latent image pattern 26 using a mold roll on which the pattern is formed.

The latent image pattern 26 may be formed in a retroreflective structure in which light is reflected in an incident direction and returned. The retroreflective structure may be a micro bead or a micro prism structure. When the latent image pattern 26 is formed in a retroreflective structure, the latent image pattern 26 is clearly invisible to the naked eye, but when copying or scanning is performed, the latent image pattern 26 appears clearly. For example, if the phrase'copy COPY' is formed as a latent image pattern 26 with a retroreflective structure, the phrase is not clearly visible to the naked eye, but when scanned or copied, the phrase appears clearly in black, making it easy to identify a counterfeit product. I can recognize it. This is because the scanner and copier acquire the reflected light of the light from the light source with the sensor. In the retroreflective structure, the incident light from the light source returns back to the light source direction, so there is no light incident on the sensor. That is, the part corresponding to the retroreflective structure appears black because there is no light incident on the sensor.

The security feature added in the present invention is not limited to the latent image pattern. For example, an electronic tag (not shown) may be applied to the lower surface of the second base material 21. The reason why it is easy to add additional security features as described above is that the micro image array 22 is formed on a separate second substrate 21 unlike the prior art.

The security element according to the embodiment of the present invention is a structure in which the first film 10 on which the micro lens array 12 is formed and the second film on which the micro image array 22 is formed are laminated through the first adhesive layer 31. In addition, there is an advantage in giving the operation identification function. 6 is a diagram for explaining a security element 1D to which an operation identification function is provided.

The security element 1D of FIG. 6 differs from the security element 1 of FIG. 1 in that the release paper 33 is attached to the lower surface of the second film 20 through the second adhesive layer 32 as a medium. have. The security element 1D of FIG. 6 is manufactured in the form of a label or sticker and is suitable for implementation in a form attached to a product. That is, the security element 1D is provided in a form with the release paper 33 attached, and after the user removes the release paper 33, it can be attached to the product using the second adhesive layer 32 and used.

In this case, the adhesive force of the first adhesive layer 31 may be less than that of the second adhesive layer 32. In this case, when an attempt is made to physically remove the security element 1D, peeling occurs at the interface between the first film 10 and the second film 20 due to a difference in adhesive force. If only the first film 10 is removed, the security element 1D is still attached, but due to the removal of the micro lens array 12, the moire magnified image is no longer observed, from which it can be easily identified that manipulation of the product was attempted. I can. When the second base material 21 is used as an opaque base material and a character for identification of operations such as'VOID' is printed on the top of the second base material 21 using transparent ink, etc.,'VOID' when peeling off the first film 10 As characters appear, it is easier to recognize that they have been manipulated, and reuse of security elements can be made more difficult.

7 is a conceptual diagram of the operation of a manufacturing apparatus for manufacturing the security element of the present invention. Referring to FIG. 7, the security element manufacturing apparatus 100 according to the present invention includes a first film supply unit 50, a second film supply unit 60, a lamination unit 70, and a security element collection unit 80. It includes, and optionally may further include an automatic matching unit 90.

The first film supply unit 50 is a part that supplies the first film in which the microlens array 12 is formed on the first substrate 11 to the lamination unit 70. Specifically, the first film 10 provided in the form of a roll 51 is guided by one or more guide bars 52A to 52C to be provided as the laminated portion 70.

The second film supply unit 60 is a part that supplies the second film 20 in which the micro image array 22 is formed on the second substrate 21 to the lamination unit 70. Specifically, the second film 20 provided in the form of a roll 61 is guided by one or more guide bars 62A and 62B to be provided as the laminated portion 70.

The second film supply unit 60 may further include an adhesive application unit 63. That is, the first adhesive layer 31 may be applied to the surface on which the micro image array 22 is printed while the second film 20 passes through the adhesive application unit 63. In FIG. 7, it is shown that the adhesive application part 63 is provided in the second film supply part 60, but the adhesive application part 63 may be provided in the first film supply part 50. In this case, the first adhesive layer 31 may be applied to the lower surface of the first film on which the microlens array 12 is not formed while the first film 10 passes through the adhesive application part 63. The first adhesive layer may be a photocurable adhesive, and among them, may be an ultraviolet curable adhesive.

The laminating unit 70 is a portion for laminating the first film 10 and the second film 20 respectively supplied from the first film supply unit 50 and the second film supply unit 60. Specifically, the first film 10 and the second film 20 may be pressed while passing between the pressure rolls 71 and adhered through the first adhesive layer 31. A lamp 72 is provided downstream of the pressure roll 71 to cure the first adhesive layer 31. The lamp 72 may be an ultraviolet lamp.

The security element collection unit 80 is a part that collects the security element 1 that has been laminated through the bonding unit 70. Specifically, the laminated security element 10 may be guided by the guide bar 81 and wound into the security element roll 82.

The security element manufacturing apparatus 100 according to an embodiment of the present invention can manufacture the security element 1 in a roll-to-roll form as described above, so it is very suitable for mass production.

The second film 20 supplied from the second film roll 61 of FIG. 7 has additional security features such as a latent layer 25 (FIG. 5) or an electronic tag, or a second adhesive layer 32 and release paper 33 May be included. In addition, FIG. 7 is exemplary, and specific configurations such as the number of guide bars may be variously adjusted and implemented.

8 is an adhesive layer on the lower surface of the first film 10 (the surface on which the micro lens array is not formed) instead of the adhesive application part 63 for applying the first adhesive layer 31 as compared to FIG. 7 This is a diagram for explaining an example of being applied and supplied in a protected state with a release paper. In this case, the first film supplied from the first film roll 51 is supplied with an adhesive layer and a release paper included, and the release paper is removed while passing through the guide bar 52D to be collected in the release paper recovery roll 55 Can be. The first film from which the release paper has been removed may be guided by one or more guide bars 52A to 52C to be provided to the bonding portion 70, and pressed by the pressure roll 71 to be laminated with the second film 20. . At this time, the first adhesive layer 31 is formed after lamination by the adhesive layer previously applied to the lower surface of the first film. In this case, a lamp for curing the first adhesive layer 31 may be omitted.

In FIG. 8, it has been described that the adhesive layer and the release paper are supplied in a state included in the first film 10, but may also be supplied in a state included in the upper surface of the second film 20 (the surface that is laminated with the first film). have. In this case, the release paper recovery roll 55 may be provided in the second film supply unit 60.

In the security element 1 according to the embodiments of the present invention, the size (magnification magnification), direction, shape, etc. of the moire enlarged image may vary according to the matching angle between the micro lens array 12 and the micro image array 22. In the laminating process, it may be important that the first film 10 and the second film 20 are accurately matched as originally intended. Accordingly, the security element manufacturing apparatus 100 according to the present invention may optionally include an automatic matching unit 90. Hereinafter, the configuration and operation principle of the automatic bonding unit 90 will be described with reference to FIGS. 7 to 9.

The automatic matching unit 90 according to the embodiment of the present invention may include an image acquisition device 91, an image processing unit 92, a control unit 95, and a driving unit 97.

The image acquisition device 91 is provided on the downstream side of the bonding unit 70 of the security element manufacturing apparatus 100 to obtain an enlarged moire image visually recognized from the bonded security element 1. The image acquisition device 91 may be a camera. The image acquisition device 91 may be provided above the security element 1, that is, in a direction in which the micro image array 12 is formed.

The image processing unit 92 is a component for receiving an image acquired from the image acquisition device 91 and comparing it with a previously stored reference image. The image processing unit 92 may compare various parameters for determining whether an image, such as the size, direction, and shape of the acquired image and the reference image, matches.

The control unit 95 is configured to receive the comparison result from the image processing unit 92 and transmit the control signal 93 to the driving unit 97. Here, the control signal 93 may be transmitted to the guide bar 52B of the first film supply unit 50.

The drive unit 97 is a configuration for driving the guide bar 52B. The driving unit 97 may drive the guide bar 52B in a left-right direction and a twist direction. A guide protrusion 53 is formed on the guide bar 52B to stably guide the first film 10. That is, when the guide bar 52B is driven in the left-right direction, the first film 10 may also be moved in the left-right direction according to the driving and supplied to the laminated portion 70.

According to this automatic matching unit 90, it is possible to finely adjust the matching angle by checking in real time whether the first film 10 and the second film 20 are matched in the process of manufacturing the security element 1 Therefore, when the matching angle between the micro lens array 12 and the micro image array 22 is different, it is possible to correct it in real time. 7 and 8 illustrate that the driving unit 97 is provided in the first film supply unit 50, the driving unit 97 may be provided in the second film supply unit 60. That is, by driving the guide bar 62B guiding the second film 20 in a left-right or twisting direction, the matching angle between the micro lens array 12 and the micro image array 22 can be corrected in real time. .

10 is a flowchart of a method of manufacturing a security element according to an embodiment of the present invention. Referring to Figure 10, the security element manufacturing method according to an embodiment of the present invention, the first film and the second film supply step (S11), the first film and the second film lamination step (S12), moire enlarged image acquisition step (S13), comparing with the set reference image (S14), and adjusting the supply direction of the first film or the second film (S15).

The first film and the second film supply step (S11) and the laminating step (S12) may be performed by using the security element manufacturing apparatus 100 of a roll-to-roll lamination method as shown in FIGS. 7 or 8. The step of obtaining the enlarged moire image (S13) may be a step of photographing the enlarged moire image with an image acquisition device such as a camera from the top of the laminated security element 1, that is, in the direction in which the micro image array 12 is formed. The step of comparing the set reference image (S14) is a step of comparing the image obtained in step S13 with a previously stored reference image to check whether the first film 10 and the second film 20 are aligned at the intended correct angle. . The step of adjusting the supply direction of the first film or the second film (S15) is a step of adjusting the direction in which the first film 10 or the second film 20 is supplied to the laminate 70 based on the confirmation result of step S14. to be. This direction adjustment may be performed by driving a guide bar guiding the first film 10 or the second film 20 in a horizontal or twisting direction.

Although it has been described with reference to the above limited embodiments and drawings, it will be apparent to those of ordinary skill in the art that various modifications are possible within the scope of the technical idea of the present invention, which is exemplary. In addition, the technical ideas described in each of the embodiments may be implemented independently as well as may be implemented in combination with each other. Therefore, the scope of protection of the present invention should be determined by the description of the claims and their equivalent range.

1: security factor
10: first film
11: Subscription 1
12: micro lens array
20: second film
21: Item 2
22: micro image array
25: latent layer
31: first adhesive layer
32: second adhesive layer
33: Hyungji Lee
50: first film supply unit
60: second film supply unit
70: bonding unit
80: Security element collection department
90: automatic matching unit
100: security element manufacturing device

Claims (17)

delete delete delete delete delete delete delete delete delete delete A security element comprising a first film having a microlens array formed on the first base material and a second film having a micro image array formed on the second base material, wherein the first film and the second film are laminated by a first adhesive layer As a manufacturing apparatus for manufacturing,
A first film supply unit for supplying a roll-shaped first film to the lamination unit;
A second film supply unit for supplying a second film in the form of a roll to the lamination unit;
A laminating unit for pressing and laminating the first film supplied from the first film supply unit and the second film supplied from the second film supply unit;
A security element collection unit for collecting the laminated security elements and winding them up in a roll shape;
Security element manufacturing apparatus comprising a. The method of claim 11,
An apparatus for manufacturing a security element, comprising: a first film supply unit or a second film supply unit; The method of claim 12,
An apparatus for manufacturing a security element, characterized in that a lamp for light-curing the first adhesive layer is provided downstream of the laminated portion. The method of claim 11,
An adhesive layer and a release paper are formed on the lower surface of the first film, or an adhesive layer and a release paper are formed on the upper surface of the second film,
A security element manufacturing apparatus, characterized in that the first film supply unit or the second film supply unit is provided with a release paper recovery roll for removing and recovering the release paper. The method of claim 11,
An image acquisition device provided downstream of the bonding unit to obtain an enlarged moire image recognized from a security element, an image processing unit receiving the obtained image and comparing it with a previously stored reference image, and receiving the comparison result An automatic matching unit including a control unit for transmitting a control signal to the driving unit and a driving unit for adjusting the supply direction of the first film or the second film according to the control signal;
Security element manufacturing apparatus further comprising a. The method of claim 15,
At least one guide roll for guiding the first film or the second film is provided,
The driving unit is a security element manufacturing apparatus, characterized in that for adjusting the left-right direction or the twisting direction of the guide roll. A security element comprising a first film having a microlens array formed on the first base material and a second film having a micro image array formed on the second base material, wherein the first film and the second film are laminated by a first adhesive layer As a method of manufacturing,
Supplying a first film and a second film;
Laminating the supplied first film and second film;
Acquiring an enlarged moire image recognized from the combined security element;
Comparing the acquired moire enlarged image with a preset reference image;
Adjusting the supply direction of the first film or the second film based on the comparison result;
Security element manufacturing method comprising a.

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