KR102214046B1 - Manufacturing method of security hologram sticker labels - Google Patents

Abstract

The present invention, the steps of preparing a first digital image made of any character or shape; Preparing a second digital image to which a random color having a size capable of covering all characters or shapes included in the first digital image is added; Converting each of the first and second digital images into third and fourth digital images by assigning different shade values to each part of the character, shape, or color of each of the first and second digital images; Recording a third digital image on a glass substrate as a first uneven pattern; Rotating the glass substrate on which the first uneven pattern is recorded at an angle of 90°; Recording the third digital image as a first concave-convex pattern and then recording the fourth digital image as a second concave-convex pattern on a glass substrate placed in a state rotated at an angle of 90°; If the first and second uneven patterns are sequentially recorded on the glass substrate, using them to produce a first holographic metal master having a third uneven pattern as a holographic image; Manufacturing a film master in which a third uneven pattern as a holographic image is continuously connected using a first holographic metal master having a third uneven pattern formed thereon; Forming a second holographic metal master by forming an electrical conductive layer on the third uneven pattern of the film master as a holographic image; Manufacturing a third holographic metal master for a roll-to-roll embossing machine using a second holographic metal master; Producing a continuous holographic film using a third holographic metal master; It provides a method of manufacturing a holographic sticker label for security comprising a; step of producing a hologram sticker by adhesive processing a continuous holographic film.

Description

Manufacturing method of security hologram sticker labels {Manufacturing method of security hologram sticker labels}

The present invention relates to a method of manufacturing a security hologram sticker label, and more specifically, it is possible to produce a security holographic sticker label that can fundamentally prevent copying by a digital printer and copying by making a copy hologram. It's about how.

Security sticker labels have been widely used as a means to prevent unauthorized forgery or tampering such as works, certificates or certificates, and genuine parts that have been used in the past.In recent years, security holograms with holograms as a means to further strengthen security The range of use of sticker labels is gradually expanding.

Most of the holograms used to prevent counterfeiting or tampering of such a hologram sticker label have a problem in that the hologram itself is less versatile in that holograms designed by individual orders are produced and used. In addition, considering that many countries already produce holograms to prevent counterfeiting, there is a certain limit to preventing counterfeiting or alteration of products by simply adding hologram images.

To this end, methods such as printing on a holographic image with fluorescent ink or color conversion ink, or additionally printing a barcode or QR code on the holographic image have been proposed. However, when the additional ink or code is additionally printed on the holographic image, security functions such as genuine product authentication are performed by printing a special ink instead of the holographic image.

Therefore, in the security function, the hologram image is not limited to the auxiliary role as an aesthetic design, and the development of a hologram sticker label that can fully exhibit the security function with the hologram image itself is urgently needed while making full use of the characteristics of the hologram itself. .

Korean Patent Registration No.1761651

The present invention has been proposed to solve the problems of the prior art, and an object of the present invention is to provide a method of manufacturing a universally versatile holographic sticker label for security that can sufficiently prevent forgery or tampering with only the holographic image itself.

The present invention, in order to achieve this object, the steps of preparing a first digital image consisting of arbitrary characters or shapes; Preparing a second digital image to which a random color having a size capable of covering all characters or shapes included in the first digital image is added; Converting each of the first and second digital images into third and fourth digital images by assigning different shade values to each part of the character, shape, or color of each of the first and second digital images; Recording a third digital image on a glass substrate as a first uneven pattern; Rotating the glass substrate on which the first uneven pattern is recorded at an angle of 90°; Recording the third digital image as a first concave-convex pattern and then recording the fourth digital image as a second concave-convex pattern on a glass substrate placed in a state rotated at an angle of 90°; If the first and second uneven patterns are sequentially recorded on the glass substrate, using them to produce a first holographic metal master having a third uneven pattern as a holographic image; Manufacturing a film master in which a third uneven pattern as a holographic image is continuously connected using a first holographic metal master having a third uneven pattern formed thereon; Forming a second holographic metal master by forming an electrical conductive layer on the third uneven pattern of the film master as a holographic image; Manufacturing a third holographic metal master for a roll-to-roll embossing machine using a second holographic metal master; Producing a continuous holographic film using a third holographic metal master; It characterized in that it comprises a; step of producing a hologram sticker by adhesive processing a continuous holographic film.

When the hologram film is produced, a step of forming an arbitrary shape design by irradiating a laser on one surface of the produced holographic film may be added.

At this time, the recording of each of the third digital image and the fourth digital image on the glass substrate is performed by the light generating device 11, the first reflecting plate 13, and the first reflecting plate located at a certain distance from the light generating device 11 (13) a light diffraction grating 14 positioned below, a first focusing lens 17 positioned below the light diffraction grating 14, a working plate 1 positioned vertically below the first focusing lens 17, Each of the X and Y driving motors 22 and 23 driving the working plate 1 in the X and Y directions, the light generator 11 and the X and Y driving motors 22 and 23, and the optical diffraction grating 14 Configuring an optical system including a control device 30 for controlling the operation; The third digital image is divided into a plurality of (X, Y)d coordinates having a certain area, and individual rotation angle Zn of the optical diffraction grating 14 is designated in each divided coordinate and stored in the control device 30 Step to do; Placing a glass substrate (P) on the upper surface of the working plate (1); According to the rotation angle Z1 of the light diffraction grating 14 specified in the 3-1 digital image (X1, Y1)d, the light diffraction grating 14 is rotated by a certain angle, and the light generated by the light generating device 11 is removed. In the state of focusing as a focusing lens 17, at (X1, Y1)p of the glass substrate P, at the individual rotation angle Z1 of the optical diffraction grating 14 specified in the 3-1 digital image (X1, Y1)d. Recording the image accordingly; Article 3-2, 3-3,. . 3-n digital image((X2, Y2,)d, (X3, Y3)d,. . (Xn, Yn)d} The rotation angle of the optical diffraction grating 14 designated in each of Z2, Z3,. . The light diffraction grating 14 is sequentially rotated at a certain angle according to Zn, and the light generated by the light generating device 11 is focused as the first focusing lens 17, and the {(X2, Y2)p, (X3, Y3)p,. . (Xn, Yn)p} 3-2, 3-3, and. . 3-n digital image((X2, Y2,)d, (X3, Y3)d,. . (Xn, Yn)d} The individual rotation angles of the optical diffraction grating 14 designated in each of Z2, Z3,. . Sequentially recording images according to Zn; Rotating the glass substrate (P) on which the first uneven pattern is recorded by the third digital image by 90°; The fourth digital image is divided into a plurality of (X, Y)d coordinates having a certain area, and in each of the divided coordinates, the respective rotation angle Zn of the optical diffraction grating 14 is designated and stored in the control device 30 The step of doing; According to the rotation angle Z1 of the light diffraction grating 14 designated in the 4-1 digital image (X1, Y1)d, the light diffraction grating 14 is rotated by a certain angle, and the light generated by the light generating device 11 is removed. 4-1 digital image (X1, Y1)d on (X1, Y1)p of the glass substrate (P) on which the first concave-convex pattern by the third digital image is recorded in a focused state as a 1 focusing lens 17 Recording the image according to the individual rotation angle Z1 of the optical diffraction grating 14 designated in Article 4-2, 4-3,. . 4-n digital image((X2, Y2,)d, (X3, Y3)d,. . (Xn, Yn)d} The rotation angle of the optical diffraction grating 14 designated in each of Z2, Z3,. . The first uneven pattern by the third digital image in a state in which the light diffraction grating 14 is sequentially rotated at a certain angle according to Zn, and the light generated by the light generating device 11 is focused as the first focusing lens 17 The ((X2, Y2)p, (X3, Y3)p,. . (Xn, Yn)p} 3-2, 3-3, and. . 3-n digital image((X2, Y2,)d, (X3, Y3)d,. . (Xn, Yn)d} The individual rotation angles of the optical diffraction grating 14 designated in each of Z2, Z3,. . It may consist of a step of sequentially recording images according to Zn.

The present invention integrates different images into a hologram, but by configuring different images to be identified by different angles, it is possible to maintain a very high level of security with only the hologram itself, and a specific design desired by the customer can be duplicated on the hologram image. Because it can be engraved, it is possible to differentiate products as well as strengthen security, and furthermore, to have a very high economic competitiveness in that holograms with such high level of security and differentiated characteristics can be provided on continuous films. Do.

1A and 1B are schematic diagrams of first and second digital images, respectively.
2A is a schematic diagram showing a third digital image when FIG. 1A is converted by a computer.
FIG. 2B is a schematic configuration diagram when FIG. 1B is divided for each color.
3 is a schematic configuration diagram of an optical system in the present invention.
Each of FIGS. 4A and 4B is a schematic diagram showing an example of dividing one surface of a glass substrate into a square shape and then recording the first and second uneven patterns using an optical system.
Fig. 5 is a schematic diagram of a holographic image recorded by Fig. 3;
6 is a schematic configuration diagram of manufacturing a first holographic metal master in the present invention.
Each of Figures 7a and 7b is a schematic configuration diagram for producing a continuous holographic film in the present invention.

A detailed look at the preferred embodiments according to the present invention with reference to the accompanying drawings is as follows. In the above description of the embodiments of the present invention, there is no direct relation to the technical features of the present invention, or in the technical field to which the present invention belongs. For matters that are self-evident to those with knowledge of, detailed explanations will be omitted.

The present invention relates to a method of manufacturing a security hologram sticker label, comprising: preparing first and second digital images, converting or separating each of the first and second digital images into a second digital image, and preparing a glass substrate It features 1 and 2 uneven pattern recording steps, a first hologram metal master production step, a tiled film master production step, a second hologram metal master production step, a hologram film production step, and a hologram sticker production step. Look at each step in detail.

First, prepare a first digital image. The first digital image is a part constituting the first holographic image in the hologram sticker label, and the character or shape of the first digital image is not specified, and a combination thereof may be used. In addition, it does not rule out the case where characters or shapes are composed of 3D images as well as ordinary 2D images.

At this time, it is preferable that the first digital image is made of an arbitrary single color, such as silver, as shown in FIG. 1A. This is when the hologram image is irradiated with light for reproduction, and the characters or shapes recorded as originally designed without color change will be described later. 2 This is to ensure that it is clearly recognized without overlapping with the digital image.

When the first digital image is prepared, different shade values are assigned to each part of the character or shape of the first digital image as shown in FIG. 1B using a computer. In this case, the first hologram image by the first digital image can be expressed in a more three-dimensional manner, and this operation can be easily performed by commercial software such as Photoshop and Illustrative.

Next, a second digital image is prepared. The second digital image is a part constituting the second holographic image in the hologram sticker label, and is an image inserted so as to be visible instead of the first digital image according to the viewing angle when the hologram image is reproduced by irradiating light.

The second digital image is preferably made of a size capable of covering all characters or shapes included in the first digital image, and may be formed of a combination of arbitrary colors or a combination of arbitrary colors and arbitrary shapes or characters. 1B shows an example of a second digital image having an arbitrary color and an arbitrary shape.

When the first and second digital images are prepared, the first and second digital images are converted into third and fourth digital images, respectively, using a computer. The conversion into the third and fourth digital images may be performed in a manner in which the rotation angle is differently designated according to the degree of the shade value of each area of the shape forming each of the first and second digital images. That is, an arbitrary rotation angle is designated according to the shading value of each area of the shape forming each of the first and second digital images and stored in dot units. Accordingly, dots of regions having the same shade value have the same rotation angle.

When the first and second digital images are converted into third and fourth digital images in this manner, grating when recording the first and second irregularities of each of the third and fourth digital images on a glass substrate using an optical system ), a diffractive optical element (DOE) is sequentially rotated at a certain angle corresponding to the rotation angle specified for each dot, and the diffracted beams at each angle are sequentially exposed to the glass substrate, and the third , 4 irregular patterns are formed.

In this case, the present invention proposes a method of editing within the range of -89° to 90° in each area of the third digital image. In other words, the 3rd and 4th digital images, respectively, so that the recorded hologram image has a left viewing angle of -89° to 0° and a right viewing angle of -0° to 90°. It is to adjust the rotation angle of the dot. In this case, the holographic image can be visualized with a wider solid angle.

Since the conversion to the third and fourth digital images can be easily performed by a conventional graphic design software such as Photoshop and an illusion, detailed descriptions are omitted. 2A shows an example of a third digital image in which the first digital image disclosed in FIG. 1A is converted through a computer operation.

On the other hand, in converting the second digital image to a fourth digital image, if the second digital image is made of a combination of arbitrary colors, the case of converting the second digital image to a fourth digital image by dividing it for each color constituting the second digital image is excluded. I never do that.

For example, if the second digital image is composed of full-color as shown in FIG. 1B, the third digital image is divided into three colors of red, green, and blue as shown in FIG. 2B, and then the fourth digital image is divided for each divided color. It is to prepare the image. This work can also be performed using a commercial software such as Photoshop.

When each of the first and second digital images is converted into each of the third and fourth digital images and stored through a computer operation, the first and second uneven patterns are recorded on the glass substrate using an optical system. To this end, as shown in FIG. 3, a light generating device 11, a first reflecting plate 13, a light diffraction grating 14, a first focusing lens 17, a working plate 1, an X, Y driving motor 22, 23), an optical system including the control device 30 is required.

The light generating device 11 may be formed of laser light as a means for generating light. The first reflecting plate 13 is located at a certain distance from the light generating device 11. The optical diffraction grating 14 may be formed of a conventional grating, and is located under the first reflective plate 13. The first focusing lens 17 focuses light reflected from the first reflecting plate 13 and is located under the light diffraction grating 14. The first focusing lens may be divided into a convex lens, a filter, and a concave lens.

The working plate 1 is positioned vertically below the first focusing lens 17. In this case, the present invention does not exclude the case where the iris 15 is provided between the optical diffraction grating 14 and the first focusing lens 17 as disclosed in FIG. 3. The iris 15 functions as a means for removing diffracted beams other than the first-order diffracted beam among the diffracted beams by the optical diffraction grating 14.

The working plate 1 is a portion where the glass substrate P is placed, and is positioned vertically below the first focusing lens 17. One surface of the glass substrate P is treated with a photoresist solution. As shown in the drawing, the working plate 1 can be controlled in the X and Y directions by the X-axis driving means 22 and the Y-axis driving means 23. The control device 30 is a means for controlling the operation of the light generating device 11, the optical diffraction grating 14, and the X and Y driving motors 22 and 23, respectively. The control device may be composed of a conventional terminal provided with a data storage unit and a control unit.

When the optical system is ready, the third digital image is divided into a plurality of (X, Y)d coordinates having a certain area, and the respective rotation angle Zn of the optical diffraction grating 14 is designated in each of the divided coordinates to control the device. Save to 30. Accordingly, each individual coordinate of the third digital image is interlocked with the optical diffraction grating 14, and the rotation angle of the optical diffraction grating 14 is designated according to the interlocked information.

When the optical system is prepared and each individual rotation angle value Zn of the optical diffraction grating 14 in the third digital image is stored in the control device 30, a glass substrate P is placed on the upper surface of the working plate 1 . In this state, the optical diffraction grating 14 is rotated by a certain angle according to the rotation angle value Z1 designated in the 3-1 digital image (X1, Y1)d, and then the light generating device 11 is operated.

When the light generating device 11 is operated, the light generated by the light generating device 11 is rotated by a certain angle according to the rotation angle Z1 specified in (X1, Y1)d by the optical diffraction grating 14. After diffraction, the diffracted beam corresponding to the rotation angle value Z1 of (X1, Y1)d is exposed and recorded on (X1, Y1)p of the glass substrate P in a focused state with the first focusing lens 17. .

At this time, in the present invention, one surface of the glass substrate P is divided into squares having a size of N(dot)×N(dot) (N=positive integer) and designated as (X, Y)p, Proposed a method of sequentially recording diffracted beams from each of the (X, Y) p of the glass substrate (P) divided into squares in a diagonal direction in the square N×N by each of the third digital images (X, Y)d do.

That is, if each of (X, Y)p of the glass substrate (P) has a size of 2(dot)×2(dot) as shown in FIG. 4A, the diffracted beam by each of the third digital images (X, Y)d Is a method of exposing the lower left cell and then the upper right cell (the surface exposed by the diffraction beam is expressed in black). At this time, if only exposure is performed in the diagonal direction, exposure of the diffracted beam may be performed in the order of lower right to upper left.

When the diffracted beam according to the information specified in the 3-1 digital image (X1, Y1)d is recorded, the operation of the light generating device 11 is stopped, and due to the operation of the X, Y axis driving means 22, 23 The working plate 1 moves. The degree of movement of the working plate 1 is interlocked with each coordinate (X, Y)d of the third digital image.

When the working plate 1 moves to the next working position, a control signal is transmitted from the control device 30 to the optical diffraction grating 14, and the rotation angle value Z2 of the 3-2 digital image (X2, Y2,)d Accordingly, the optical diffraction grating 14 is rotated by a certain angle in one direction. When the light generating device 11 is operated in this state, the light generated by the light generating device 11 is diffracted by the light diffraction grating 14 rotated at a certain angle according to Z2, similar to the above process. , A diffracted beam corresponding to Z2 of (X2, Y2)d is exposed and recorded on (X2, Y2)p of the glass substrate P in a focused state as the first focusing lens 17.

When the exposure work on the 3-2 digital image (X2, Y2)d is completed, the working plate 1 is moved in conjunction with the coordinates (X, Y)d of the third digital image, and (X3, Y3) ,)d, (X4, Y4)d,. . (Xn, Yn)d rotation angles assigned to each of Z3, Z4,. . Depending on Zn, the light diffraction grating 14 is rotated by a certain angle, and the light generator 11 is operated to make the glass substrate P {(X3, Y3)p, (X4, Y4)p,. . (Xn, Yn)p} respectively in (X3, Y3,)d, (X4, Y4)d,. . (Xn, Yn)d assigned to each of Z3, Z4,. . The diffracted beams corresponding to Zn are sequentially exposed.

When the exposure operation for each of the 3-n-th digital images is completed according to the above-described steps, the first uneven pattern as the intended exposure pattern as exemplified in FIG. 2A is recorded on the glass substrate P.

When the first uneven pattern of the third digital image is recorded on the glass substrate (P), the glass substrate (P) is separated from the working plate (1) and then placed on the working plate (1) while rotating at an angle of 90°. . This may be achieved by rotating the working plate 1 on which the glass substrate P is placed at an angle of 90°.

Next, the fourth digital image is divided into a plurality of (X, Y)d coordinates having a certain area, and the respective rotation angle Zn of the optical diffraction grating 14 is designated in each of the divided coordinates, and the control device 30 ). Accordingly, each individual coordinate of the fourth digital image is interlocked with the optical diffraction grating 14, and the rotation angle of the optical diffraction grating 14 is designated according to the interlocked information.

When the glass substrate P is rotated at an angle of 90°, when each individual rotation angle value Zn of the optical diffraction grating 14 in the fourth digital image is stored in the control device 30, the 4-1 digital image The optical diffraction grating 14 is rotated by a certain angle according to the rotation angle value Z1 specified in (X1, Y1)d, and then the light generating device 11 is operated.

When the light generating device 11 is operated, the light generated by the light generating device 11 is rotated by a certain angle according to the rotation angle Z1 specified in (X1, Y1)d by the optical diffraction grating 14. After diffraction, the diffracted beam corresponding to the rotation angle value Z1 of (X1, Y1)d is exposed and recorded on (X1, Y1)p of the glass substrate P in a focused state with the first focusing lens 17. .

At this time, if one side of the glass substrate P is divided into squares having a size of N(dot)×N(dot) (N=positive integer) and designated as (X, Y)p, the third digital As in the case of the image, for each (X, Y)p of the glass substrate (P) divided into squares, the diffracted beams by each of the fourth digital images (X, Y)d are in the square N×N, in a diagonal direction. Is recorded as.

That is, each (X, Y)p of the glass substrate (P) has a size of 2(dot)×2(dot) as shown in FIG. 4A, so that the diffracted beam by each of the third digital images (X, Y)d is left If the lower cell and the upper right cell were sequentially exposed, in the case of the fourth digital image, each of the fourth digital images (X, Y)d while the glass substrate (P) was rotated at an angle of 90° as shown in FIG. 4B. The diffracted beam by is sequentially exposed to the lower left cell and the upper right cell with white blanks.

When the diffracted beam according to the information specified in the 4-1 digital image (X1, Y1)d is recorded, the operation of the light generating device 11 is stopped, and due to the operation of the X, Y axis driving means 22, 23 The working plate 1 moves. The degree of movement of the working plate 1 is interlocked with each coordinate (X, Y)d of the fourth digital image.

When the working plate 1 moves to the next working position, a control signal is transmitted from the control device 30 to the optical diffraction grating 14, and the rotation angle value Z2 of the 4-2 digital image (X2, Y2,)d Accordingly, the optical diffraction grating 14 is rotated by a certain angle in one direction. When the light generating device 11 is operated in this state, the light generated by the light generating device 11 is diffracted by the light diffraction grating 14 rotated at a certain angle according to Z2, similar to the above process. , A diffracted beam corresponding to Z2 of (X2, Y2)d is exposed and recorded on (X2, Y2)p of the glass substrate P in a focused state as the first focusing lens 17.

When the exposure work on the 4-2 digital image (X2, Y2)d is completed, the working plate 1 is moved in conjunction with the coordinates (X, Y)d of the fourth digital image, and (X3, Y3) ,)d, (X4, Y4)d,. . (Xn, Yn)d rotation angles assigned to each of Z3, Z4,. . Depending on Zn, the light diffraction grating 14 is rotated by a certain angle, and the light generator 11 is operated to make the glass substrate P {(X3, Y3)p, (X4, Y4)p,. . (Xn, Yn)p} respectively in (X3, Y3,)d, (X4, Y4)d,. . (Xn, Yn)d assigned to each of Z3, Z4,. . The diffracted beams corresponding to Zn are sequentially exposed.

When the exposure operation for each of the 4-nth digital images is completed according to the above-described steps, the second uneven pattern as the intended exposure pattern as exemplified in FIG. 2A is duplicated and recorded on the upper surface of the first uneven pattern. .

If the second digital image is composed of full-color as shown in FIG. 1B, and the fourth digital image is divided into three colors of red, green, and blue as shown in FIG. 2B, the second digital image is Unlike the above-described method, the uneven pattern must be recorded, but this will be briefly examined.

First, one side of the glass substrate (P) is divided into squares having a size of N(dot)×N(dot) (N=3) and designated as (X, Y)p. There may be a method of exposing the diffracted beam in a diagonal direction while changing the order of each of the divided fourth digital images for each (X, Y)p of the divided glass substrate P.

For example, if each (X, Y)p of the glass substrate (P) has a size of 3(dot)×3(dot), the individual (X, Y)d diffracted beams of red in the fourth digital image are diagonally Exposure is sequentially performed in either direction, and the individual (X, Y)d diffraction beams of Green are sequentially exposed in the next direction among the diagonals, and the individual (X, Y)d diffraction beams of Blue are sequentially exposed to the last of the diagonals. You just need to sequentially expose in the remaining directions.

On the contrary, if each (X, Y)p of the glass substrate P has a size of 2(dot)×2(dot) as shown in FIG. 4A, each white margin is divided by 1/3 in FIG. 4B. , The diffracted beam for each individual (X, Y)d of Red, Green, and Blue of the fourth digital image may be exposed by 1/3 of the white margin.

5 shows a schematic configuration example of a final holographic image that can be completed through this operation. When the holographic image produced according to the present invention is viewed from a front angle (a state in which the hologram image is not rotated), the image shown in FIG. 1A appears in FIG. 5, and when viewed from a 90° angle (a state in which the hologram image is rotated 90°), FIG. An image such as is displayed. That is, as different images are identified according to the recording angle of each image, forgery or falsification by a digital copier can be very easily prevented by using only the hologram image itself, so it has considerable versatility in terms of security.

When the first and second uneven patterns are sequentially recorded on the glass substrate, a first holographic metal master with a third uneven pattern as a holographic image is manufactured using these. The first hologram metal master according to the present invention may be manufactured according to the steps disclosed in FIG. 6, and the second and third hologram masters to be described later may also be manufactured according to similar steps.

First, a conductive thin film layer 103 is formed on the upper surfaces of the first and second uneven patterns 102 formed on the photoresist 101 on one surface of the glass substrate P (FIGS. 6A and 6B ). The conductive thin film layer may be formed of any one selected from gold, silver, and nickel, and the conductive thin film operation may be performed by a vapor deposition method or an electroless plating method.

When the conductive thin film layer 103 is formed, a metal having a predetermined thickness is plated on the upper surface of the conductive thin film layer 103 using the conductive thin film layer 103 as an electrode. The metal may be made of nickel, and the plating treatment on the upper surface of the conductive thin film layer may be performed by an electroplating method widely known in the related art. Accordingly, the first and second concave-convex patterns 102 of the glass substrate P are transferred to the third concave-convex pattern 112 on one surface of the first holographic metal master 111 (FIG. 6C). In Fig. 6c, reference numeral 113 denotes a chromium layer.

When the first holographic metal master with the third concave-convex pattern formed is fabricated, the film master in which the third concave-convex pattern as a holographic image is continuously connected is manufactured using this. This is a method of displaying and connecting the overlapped image portions so that the patterns between adjacent image planes on which the irregularities are recorded are matched, and is commonly referred to as tiling. The tiling according to the present invention can be performed using either UV tiling and mechanical tiling.

First, look at the UV tiling method. First, a certain amount of UV resin is applied to the first hologram metal master, and then a film made of a material such as PVC or PET is covered, followed by a laminating process, and irradiated with UV light to replicate. When the third uneven pattern of the first hologram metal master is transferred to one side of the film, a plurality of films are prepared by repeating this process, and the third uneven pattern is connected so as to overlap to manufacture a film master.

The mechanical tiling method is as follows. First, attach the first hologram metal master to the recombine bundle, and input conditions such as temperature, travel distance, and pressure strength into a computer. When conditions, etc. are input, a recording material made of a material such as acrylic or polycarbonate is fixed to the cradle. In this state, the image overlapping portion of the first hologram metal master is calculated, and the remaining area excluding the overlapped portion is connected to the image pattern through the recombination equipment to produce the film master.

In the former case, the purpose is to mass-produce by embossing, and it is a tiling manufacturing method that can make a large area of the second hologram metal master to be described later, and in the latter case, it is to increase the production speed of the UV tiling method with passive limitations. Because it is designed for high pressure, the shape of the recording material is not the thin film type used in the UV tiling method, but the plate shape with excellent thickness and transparency. This is widely known in the related industry, and a detailed description thereof will be omitted.

When the third uneven pattern as a holographic image is transferred to prepare a tiled film master, an electrical conductive layer is formed on the third uneven pattern of the film master to produce a second holographic metal master. The second holographic metal master may be manufactured in a similar manner to that of the first holographic metal master disclosed in FIG. 6.

However, in the case of the first holographic metal master, the glass substrate P becomes the original plate, and a conductive thin film layer is formed on the first and second uneven patterns formed on one side of the glass substrate P. In this case, the tiled film master (film or plate) becomes the original plate, and there is a difference in forming a conductive thin film layer on a continuous third uneven pattern formed on one side of the film master, and the others are the same.

That is, a conductive thin film layer is formed on the upper surface of the continuous third uneven pattern transferred to the tiled film master, and a second holographic metal master is fabricated by plating a metal of a predetermined thickness on the upper surface of the conductive thin film layer. Accordingly, a large-area holographic metal master is created. For example, a holographic hot stamping foil may be manufactured with a width of at least 640 mm, and a holographic film may be manufactured with a width of at least 800 mm.

When a large-area second holographic metal master is manufactured, a third holographic metal master for a roll-to-roll embossing machine is manufactured using this. The third hologram metal master is a replica stamper attached to a roller for mass production, and as widely known in the related industry, the third hologram metal master can be manufactured by electroplating using the second holographic metal master. In this case, a third holographic metal master having a thickness of less than 100 μm can be obtained by using a thick second holographic metal master having a thickness of 250 μm or more.

When the third holographic metal master is produced, it is attached to a roll to produce a continuous holographic film. The continuous holographic film may be manufactured by either a soft embossing method or a hard embossing method widely known in the related industry.

In the soft embossing method, as disclosed in FIG. 7A, after mounting the third holographic metal master 211 on the outer surface of the metal roller 210, the metal roller 210 is applied to the rubber roller 220 with a constant force F using hydraulic pressure. When passing between the metal roller 210 and the rubber roller 220 while in close contact with, the continuous third uneven pattern transferred to the third holographic metal master 211 is embossed on one side of the film, and has a configuration as shown in FIG. The holographic image is transferred.

The hard embossing method is similar to the soft embossing method, but mounting the third hologram metal master 211 on the outer surface of the metal roller 250 is similar to the soft embossing method, but not a single rubber roller, but a pair of left and right rubber rollers 260 , 270) is sequentially in close contact with the metal roller 250 with a predetermined force F1 and F2 using hydraulic pressure to emboss a continuous third uneven pattern transferred to the third holographic metal master 211 on one side of the film. In that it is different from the soft embossing method.

When a continuous hologram film is produced by the third hologram metal master, the hologram film is adhesively processed to produce a hologram sticker. This may be achieved by coating an adhesive on one side of a continuous release paper or a continuous release film on which a release layer is applied, and laminating the produced hologram film.

When a continuous holographic film is laminated on a continuous release paper or a release film, the production of the hologram sticker according to the present invention is completed by winding it with a roll. Afterwards, various finished products are made through cutting to a certain size for each product or slitting using this.

On the other hand, the present invention does not exclude the case of forming an arbitrary shape design by irradiating a laser on one side of the hologram sticker when it is produced. In the case of hologram stickers, the surface is usually made of a transparent PET film, and there is a vacuum evaporation layer underneath the holographic image. When using a laser, an arbitrary shape, letter, or serial number is placed on the vacuum deposition layer without damaging the transparent PET film. Sculpture is possible.

Such a design by laser processing can be made into a shape or character desired by the customer, and since processing can be performed only on a specific part of the hologram image, it is possible to perform a more complete security function by preventing additional forgery or alteration.

In the above, the description has been limited to the preferred embodiments of the present invention, but this is only an example, and the present invention is not limited thereto and may be changed and implemented in various ways, and further, a separate technical feature is provided based on the disclosed technical idea. It will be obvious that it can be added and implemented.

11: light generating device
13: first reflective plate
14: light diffraction grating
17: first focusing lens
22, 23: X, Y driving motor
30: control device

Claims (3)

Preparing a first digital image having an arbitrary character or shape;
A random color having a size that can cover all characters or shapes included in the first digital image is added, and it is composed of a combination of one or more elements selected from random colors, random shapes, and random character groups, and irradiated with light. Preparing a second digital image constituting a second holographic image that is inserted to be visible instead of the first digital image at a set angle when reproducing the holographic image;
Converting each of the first and second digital images into third and fourth digital images by assigning different shade values to each part of the character, shape, or color of each of the first and second digital images;
Recording a third digital image on a glass substrate as a first uneven pattern;
Rotating the glass substrate on which the first uneven pattern is recorded at an angle of 90°;
Recording the third digital image as a first concave-convex pattern and then overlapping the fourth digital image as a second concave-convex pattern on a glass substrate placed in a state rotated at an angle of 90°;
If the first and second uneven patterns are sequentially recorded on the glass substrate, using them to produce a first holographic metal master having a third uneven pattern as a holographic image;
Manufacturing a film master in which a third uneven pattern as a holographic image is continuously connected using a first holographic metal master having a third uneven pattern formed thereon;
Forming a second holographic metal master by forming an electrical conductive layer on the third uneven pattern of the film master as a holographic image;
Manufacturing a third hologram metal master for a roll-to-roll embossing machine using a second hologram metal master;
Producing a continuous holographic film using a third holographic metal master;
A step of producing a hologram sticker by adhesive processing the continuous holographic film;
Including,
When the hologram film is produced, the step of forming an arbitrary shape design by irradiating a laser on one surface of the produced holographic film is added. A method of manufacturing a security hologram sticker label.
delete The method of claim 1,
Recording of each of the third digital image and the fourth digital image on the glass substrate,
The light generating device 11, the first reflecting plate 13 located at a certain distance from the light generating device 11, the optical diffraction grating 14 located under the first reflecting plate 13, the light diffraction grating 14 The first focusing lens 17 positioned at, the working plate 1 positioned vertically below the first focusing lens 17, and an X, Y driving motor 22 for driving the working plate 1 in the X and Y directions, 23), configuring an optical system including a light generating device 11 and a control device 30 for controlling the operation of each of the X and Y driving motors 22 and 23 and the optical diffraction grating 14;
The third digital image is divided into a plurality of (X, Y)d coordinates having a certain area, and individual rotation angle Zn of the optical diffraction grating 14 is designated in each divided coordinate and stored in the control device 30 Step to do;
Placing a glass substrate (P) on the upper surface of the working plate (1);
According to the rotation angle Z1 of the light diffraction grating 14 specified in the 3-1 digital image (X1, Y1)d, the light diffraction grating 14 is rotated by a certain angle, and the light generated by the light generating device 11 is removed. In the state of focusing as a focusing lens 17, at (X1, Y1)p of the glass substrate P, at the individual rotation angle Z1 of the optical diffraction grating 14 specified in the 3-1 digital image (X1, Y1)d. Recording the image accordingly;
Article 3-2, 3-3,. . 3-n digital image((X2, Y2,)d, (X3, Y3)d,. . (Xn, Yn)d} The rotation angle of the optical diffraction grating 14 designated in each of Z2, Z3,. . The light diffraction grating 14 is sequentially rotated at a certain angle according to Zn, and the light generated by the light generating device 11 is focused as the first focusing lens 17, and the {(X2, Y2)p, (X3, Y3)p,. . (Xn, Yn)p} 3-2, 3-3, and. . 3-n digital image((X2, Y2,)d, (X3, Y3)d,. . (Xn, Yn)d} The individual rotation angles of the optical diffraction grating 14 designated in each of Z2, Z3,. . Sequentially recording images according to Zn;
Rotating the glass substrate (P) on which the first uneven pattern is recorded by the third digital image by 90°;
The fourth digital image is divided into a plurality of (X, Y)d coordinates having a certain area, and in each of the divided coordinates, the respective rotation angle Zn of the optical diffraction grating 14 is designated and stored in the control device 30 Step to do;
According to the rotation angle Z1 of the light diffraction grating 14 designated in the 4-1 digital image (X1, Y1)d, the light diffraction grating 14 is rotated by a certain angle, and the light generated by the light generating device 11 is removed. 4-1 digital image (X1, Y1)d on (X1, Y1)p of the glass substrate (P) on which the first concave-convex pattern by the third digital image is recorded in a focused state as a 1 focusing lens 17 Recording the image according to the individual rotation angle Z1 of the optical diffraction grating 14 designated in
Article 4-2, 4-3,. . 4-n digital image((X2, Y2,)d, (X3, Y3)d,. . (Xn, Yn)d} The rotation angle of the optical diffraction grating 14 designated in each of Z2, Z3,. . The first uneven pattern by the third digital image in a state in which the light diffraction grating 14 is sequentially rotated at a certain angle according to Zn, and the light generated by the light generating device 11 is focused as the first focusing lens 17 The ((X2, Y2)p, (X3, Y3)p,. . (Xn, Yn)p} 3-2, 3-3, and. . 3-n digital image((X2, Y2,)d, (X3, Y3)d,. . (Xn, Yn)d} The individual rotation angles of the optical diffraction grating 14 designated in each of Z2, Z3,. . Step of sequentially recording the image according to Zn; Method of manufacturing a holographic sticker label for security, characterized in that consisting of.

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