KR20200048922A - Manufacturing method of security hologram sticker labels - Google Patents

Abstract

Provided is a manufacturing method of a security hologram sticker label, comprising the following steps: preparing a first digital image; preparing a second digital image; converting to third and fourth digital images, respectively; recording the third digital image as a first uneven pattern on a glass substrate; rotating the glass substrate on which the first uneven pattern is recorded; overlaying and recording the fourth digital image as a second uneven pattern on the glass substrate; manufacturing a first hologram metal master; manufacturing a film master; manufacturing a second hologram metal master; manufacturing a third hologram metal master for a roll-to-roll embossing machine; producing a continuous hologram film; and manufacturing a hologram sticker.

Description

Manufacturing method of security hologram sticker labels}

The present invention relates to a method for manufacturing a hologram sticker label for security, and more specifically, a security hologram sticker label that can fundamentally prevent copying by copying and copying hologram production by a digital printer can be produced very economically. 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. The scope of use of sticker labels is gradually expanding.

 Most of the holograms used to prevent the forgery or falsification of the hologram sticker label have a problem that versatility is deteriorated when viewed from the hologram itself, since the hologram designed by the user's individual order is manufactured and used. Moreover, in many countries, there are certain limitations in preventing forgery or tampering of products by simply adding a hologram image, considering that companies that manufacture holograms to prevent such forgeries are already successful.

To this end, methods such as printing on a hologram image with fluorescent ink or color conversion ink, or additionally printing a barcode or QR code on the hologram image have been proposed. However, when such a separate ink or code is additionally printed on the hologram image, security functions such as genuine product activation are performed by printing special ink, not the hologram image.

Therefore, in the security function, the hologram image is not limited to an auxiliary role as an aesthetic design, and it is urgently needed to develop a hologram sticker label that can fully demonstrate the security function with the hologram image itself while fully utilizing the characteristics of the hologram itself. .

Republic of Korea Registered Patent 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 for manufacturing a holographic sticker label for general purpose security that can sufficiently exhibit anti-counterfeiting or tampering with the hologram image itself.

In order to achieve this object, the present invention comprises the steps of preparing a first digital image composed of arbitrary characters or shapes; Preparing a second digital image with a random color having a size capable of covering all the characters or shapes included in the first digital image; Converting each of the first and second digital images to each of the third and fourth digital images by assigning different shade values to each part of the characters, shapes, or colors using a computer; Recording a third digital image as a first uneven pattern on a glass substrate; Rotating the glass substrate on which the first uneven pattern is recorded at an angle of 90 °; A third digital image is recorded as a first uneven pattern, and then a fourth digital image is repeatedly recorded as a second uneven pattern on a glass substrate placed in a state rotated at an angle of 90 °; If the first and second uneven patterns are sequentially overlaid and recorded on the glass substrate, using this to produce a first holographic metal master having a third uneven pattern as a holographic image; Producing a film master having a third uneven pattern continuously as a hologram image using a first holographic metal master on which a third uneven pattern is formed; Forming a second hologram metal master by forming an electric conductive layer on the film master third uneven pattern as a hologram image; Manufacturing a third hologram metal master for a roll-to-roll embossing machine using a second hologram metal master; Producing a continuous hologram film using a third hologram metal master; It comprises a step of producing a hologram sticker by sticking a continuous holographic film; the technical characteristics of the comprising.

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

At this time, the recording of each of the third digital image and the fourth digital image on the glass substrate, the first reflection plate 13, the first reflection plate located at a certain distance from the light generating device 11, the light generating device 11 (13) The optical diffraction grating 14 located at the bottom, the first focusing lens 17 located at the bottom of the optical diffraction grating 14, the first focusing lens 17, the work plate 1 located at the vertical bottom, Each of the X, Y driving motors 22 and 23 driving the work plate 1 in the X and Y directions, the light generating device 11 and the X and Y driving motors 22 and 23 and the optical diffraction grating 14 respectively Configuring an optical system including a control device (30) for controlling operation; The third digital image is divided into a plurality of (X, Y) d coordinates having a certain area, and the respective rotation angles Zn of the optical diffraction grating 14 are designated and stored in the control device 30 in each of the divided coordinates. To do; Placing a glass substrate (P) on the upper surface of the work plate (1); The optical diffraction grating 14 is rotated at a predetermined angle according to the rotational angle Z1 of the optical diffraction grating 14 specified in the 3-1 digital image (X1, Y1) d, and the light generated by the light generating device 11 is removed. 1 With the focusing lens 17, the individual rotation angle Z1 of the optical diffraction grating 14 specified in the 3-1 digital image (X1, Y1) d on the (X1, Y1) p of the glass substrate P is focused Recording the image accordingly; 3-2, 3-3,. . 3-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The rotation angles Z2, Z3,. Of the optical diffraction grating 14 assigned to each. . The optical diffraction grating 14 is sequentially rotated at a predetermined 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} respectively 3-2, 3-3,. . 3-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The individual rotation angles Z2, Z3,. . Sequentially recording images according to Zn; Rotating the glass substrate P on which the first uneven pattern by the third digital image is recorded by 90 °; The fourth digital image is divided into a plurality of (X, Y) d coordinates having a certain area, and the respective rotation angles Zn of the optical diffraction grating 14 are designated and stored in the control device 30 in each of the divided coordinates. To do; The optical diffraction grating 14 is rotated at a predetermined angle according to the rotational angle Z1 of the optical diffraction grating 14 specified in the 4-1 digital image (X1, Y1) d, 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 in which the first concavo-convex pattern by the third digital image is recorded with the focusing lens 17 as the focusing lens 17 Recording an image according to an individual rotation angle Z1 of the optical diffraction grating 14 specified in; 4-2, 4-3,. . 4-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The rotation angles Z2, Z3,. Of the optical diffraction grating 14 assigned to each. . The first concavo-convex pattern by the third digital image while the optical 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 ((X2, Y2) p, (X3, Y3) p,. . (Xn, Yn) p} respectively 3-2, 3-3,. . 3-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The individual rotation angles Z2, Z3,. . Sequentially recording images according to Zn;

According to the present invention, by integrating different images into holograms, but by constructing such that different images can be identified by different angles, the hologram itself can maintain a very high level of security, and the specific design desired by the customer is overlapped with the hologram image. Engraving can not only differentiate the product, but also enhance security, and furthermore, it can provide a hologram with this high level of security and differentiated characteristics to a continuous film, so that it can be very economically competitive. Do it.

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

The preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the detailed description of the embodiments of the present invention, there is no direct relationship with the technical features of the present invention, or it is common in the technical field to which the present invention pertains. Details that are apparent to those who have knowledge of will be omitted.

The present invention relates to a method of manufacturing a hologram sticker label for security, the steps of preparing first and second digital images, converting or dividing each of the first and second digital images into a second digital image, and disposing them on a glass substrate. Features include 1 and 2 uneven pattern recording step, first hologram metal master production step, tiled film master production step, second hologram metal master production step, hologram film production step, and hologram sticker production step. Let's look at each step in detail.

First, a first digital image is prepared. The first digital image is a part constituting the first holographic image in the hologram sticker label. Characters or shapes of the first digital image are not specified, and a combination of these may be used. In addition, characters or shapes are not excluded in the case of a conventional 2D image as well as a 3D image.

At this time, it is preferable that the first digital image is made of a random monochromatic color, such as silver, as shown in FIG. 1A. When the light is irradiated to the hologram image for reproduction, characters or shapes recorded in the original design without changing color may be described later. 2 This is to ensure that it can be clearly recognized without overlapping with the digital image.

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

Next, a second digital image is prepared. The second digital image is a part constituting the second holographic image on the hologram sticker label, and is an image inserted to be seen instead of the first digital image according to the viewing angle when irradiating light to reproduce the holographic image.

The second digital image is preferably made of a size capable of covering all the 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. FIG. 1B discloses an example of a second digital image composed of arbitrary colors and arbitrary shapes.

When the first and second digital images are prepared, the computer converts the first and second digital images into third and fourth digital images, respectively. The conversion to the third and fourth digital images may be performed by differently designating a rotation angle according to the degree of lightness of each region of a shape constituting each of the first and second digital images. That is, an arbitrary rotation angle is designated and stored in dot units according to the shade value of each region of a shape constituting each of the first and second digital images. Accordingly, dots of regions having the same shade value have the same rotation angle.

When the first and second digital images are converted to each of the third and fourth digital images in this manner, when the first and second irregular patterns of each of the third and fourth digital images are recorded on the glass substrate using an optical system, grating is performed. Diffractive Optical Elements (DOE) such as) are sequentially rotated at a predetermined angle corresponding to a specified rotational angle for each dot, and the diffracted beams at each angle are sequentially exposed to the glass substrate and third , 4 Uneven pattern is formed.

At this time, the present invention proposes a method of editing the rotation angle in the range of -89 ° to 90 ° in each area of the third digital image. That is, each of the third and fourth digital images so that the recorded hologram image has a left viewing angle range of -89 ° to 0 ° and a right viewing angle range of -0 ° to 90 ° with respect to the front (0 °). Is to adjust the dot rotation angle. In this case, the hologram image has a wider stereoscopic angle and can be visualized.

The conversion to the third and fourth digital images can be easily performed by a conventional graphic design SW such as Photoshop, illustration, etc., so a detailed description is omitted. FIG. 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.

Meanwhile, in converting the second digital image to the fourth digital image, if the second digital image is composed of a combination of arbitrary colors, the case of dividing each color constituting the second digital image into a fourth 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 for each divided color. It is to prepare the image. This can also be done using commercial software, such as Photoshop.

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

The light generating device 11 may be made of laser light as a means for generating light. The first reflective plate 13 is located at a predetermined distance from the light generating device 11. The optical diffraction grating 14 may be made of 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 positioned under the light diffracting grating 14. The first focusing lens may be divided into a convex lens, a filter, and a concave lens.

The work plate 1 is positioned vertically below the first focusing lens 17. At this time, 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 diffraction beams other than the primary diffraction beam among the beams diffracted by the optical diffraction grating 14.

The working plate 1 is a portion on which the glass substrate P is placed, and is located at a vertical lower portion of the first focusing lens 17. One surface of the glass substrate P is treated with a photoresist liquid. As shown in the drawing, the work plate 1 can be controlled to be moved 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 each of the light generating device 11, the optical diffraction grating 14, and the X and Y driving motors 22 and 23. The control device may consist of a conventional terminal in which a data storage unit and a control unit are provided.

When the optical system is prepared, the third digital image is divided into a plurality of (X, Y) d coordinates having a certain area, and a control device is designated by designating each of the individual rotation angles Zn of the optical reciprocator 14 in each of the divided coordinates (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 is stored in the control device 30 in the third digital image, the glass substrate P is placed on the upper surface of the work plate 1. . In this state, the optical diffraction grating 14 is rotated at a predetermined angle according to the rotation angle value Z1 specified 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 generated by an optical diffraction grating 14 that maintains a state rotated by a certain angle according to the rotation angle Z1 specified in (X1, Y1) d. After being diffracted, the diffraction beam corresponding to the rotation angle value Z1 of (X1, Y1) d is recorded on (X1, Y1) p of the glass substrate P in the state focused as the first focusing lens 17 and recorded. .

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

That is, if each of the (X, Y) p of the glass substrate P is made of a size of 2 (dot) × 2 (dot) as shown in FIG. 4A, the diffraction 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 the exposure is made in the diagonal direction, the exposure of the diffraction beam may be made in the order from bottom right to top left.

When the diffraction 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, due to the operation of the X, Y axis driving means 22, 23 The work plate 1 moves. The degree of movement of the work plate 1 is made in conjunction with each coordinate (X, Y) d of the third digital image.

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

When the exposure work for the 3-2 digital image (X2, Y2) d is completed, the work plate 1 is moved in association with each coordinate (X, Y) d of the third digital image, and then moved (X3, Y3) ,) d, (X4, Y4) d,. . (Xn, Yn) d Rotation angle Z3, Z4,. . The optical diffraction grating 14 is rotated at an angle according to Zn, and the light generating device 11 is operated to {(X3, Y3) p, (X4, Y4) p,. . (Xn, Yn) p} respectively (X3, Y3,) d, (X4, Y4) d,. . (Xn, Yn) d Z3, Z4,. . The diffraction beam corresponding to Zn is sequentially exposed.

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

When the first concavo-convex pattern of the third digital image is recorded on the glass substrate P, the glass substrate P is separated from the work plate 1 and then placed on the work plate 1 in a state rotated at an angle of 90 °. . This may also be achieved by rotating the work plate 1 on which the glass substrate P is placed at a 90 ° angle.

Next, the fourth digital image is divided into a plurality of (X, Y) d coordinates having a predetermined area, and the control device 30 by designating each individual rotation angle Zn of the optical diffraction grating 14 in each of the divided coordinates 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 the individual rotation angle value Zn of the optical diffraction grating 14 is stored in the control device 30 in the fourth digital image, the fourth-1 digital image According to the rotation angle value Z1 specified in (X1, Y1) d, the optical diffraction grating 14 is rotated by a predetermined angle, 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 generated by an optical diffraction grating 14 that maintains a state rotated by a certain angle according to the rotation angle Z1 specified in (X1, Y1) d. After being diffracted, the diffraction beam corresponding to the rotation angle value Z1 of (X1, Y1) d is recorded on (X1, Y1) p of the glass substrate P in the state focused as the first focusing lens 17 and recorded. .

At this time, if one surface of the glass substrate P is divided into square sizes 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, the diffraction beams of each of the fourth digital images (X, Y) d for each (X, Y) p of the glass substrate P divided into squares are sequential diagonally in the square N × N. Is recorded as

That is, each of the (X, Y) p of the glass substrate P has a size of 2 (dot) × 2 (dot) as shown in FIG. 4A, and the diffraction beam by each of the third digital images (X, Y) d is left. If the lower and upper right columns are sequentially exposed, in the case of the fourth digital image, each of the fourth digital images (X, Y) d in the state where the glass substrate P is rotated at an angle of 90 ° as shown in FIG. 4B. The diffraction beam by is sequentially exposing the lower left and upper right cells, which are white margins.

When the diffraction 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, due to the operation of the X, Y axis driving means 22, 23 The work plate 1 moves. The degree of movement of the work plate 1 is achieved by interlocking with each coordinate (X, Y) d of the fourth digital image.

When the work plate 1 is moved to the next work position, a control signal is transmitted from the control device 30 to the optical diffraction grating 14 to the rotation angle value Z2 of the 4-2 digital image (X2, Y2,) d. Accordingly, the optical diffraction grating 14 is rotated at a certain angle in one direction. When the light generating device 11 is operated in this state, the light generated in the light generating device 11 is diffracted by the optical diffraction grating 14 which is rotated at an angle according to Z2, in much the same way as the above-described process. , Diffraction beams corresponding to Z2 of (X2, Y2) d are recorded in (X2, Y2) p of the glass substrate P in the state focused as the first focusing lens 17 and recorded.

When the exposure work for the 4-2 digital image (X2, Y2) d is completed, the work plate 1 is moved in association with the coordinates (X, Y) d of the fourth digital image, and moved (X3, Y3) ,) d, (X4, Y4) d,. . (Xn, Yn) d Rotation angle Z3, Z4,. . The optical diffraction grating 14 is rotated at an angle according to Zn, and the light generating device 11 is operated to {(X3, Y3) p, (X4, Y4) p,. . (Xn, Yn) p} respectively (X3, Y3,) d, (X4, Y4) d,. . (Xn, Yn) d Z3, Z4,. . The diffraction beam corresponding to Zn is sequentially exposed.

When the exposure operation for each of the 4-n digital images is completed according to the above-described steps, the second concavo-convex pattern as the intended exposure pattern as exemplarily represented in FIG. 2A is overlaid on the top surface of the first concavo-convex pattern. .

If the second digital image is 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, and converted, the second digital image is the second. The uneven pattern should be recorded unlike the method described above, and this is briefly examined.

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

For example, if each of the (X, Y) p of the glass substrate P has a size of 3 (dot) × 3 (dot), diagonally divide the individual (X, Y) d diffraction beams of Red in the fourth digital image. It sequentially exposes in either direction, and sequentially exposes the individual (X, Y) d diffraction beams of Green in the next direction, and finally the individual (X, Y) d diffraction beams of Blue in the diagonal direction. It is only necessary to sequentially expose in the remaining direction.

Alternatively, if each of the (X, Y) p of the glass substrate P has a size of 2 (dot) × 2 (dot) as shown in FIG. 4A, each white margin in FIG. 4B is divided by 1/3. , Diffraction beams for each (X, Y) d of each of the red, green, and blue of the fourth digital image may be exposed by 1/3 of the white margin.

5 shows an example of a schematic final hologram image that can be completed through such a work. When viewing the hologram image produced according to the present invention from a front angle (without rotating the hologram image), an image as shown in FIG. 5 is shown in FIG. 5, and when viewed from a 90 ° angle (with the hologram image rotated by 90 °), FIG. 2A The same image will appear. That is, as different images are identified according to the recording angle of each image, the hologram image itself has considerable versatility in terms of security in that it can very easily prevent forgery or tampering by a digital copying machine.

When the first and second uneven patterns are sequentially recorded on the glass substrate, a first holographic metal master having a third uneven pattern as a holographic image is formed using the same. 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, which will be described later, may also be manufactured according to the same 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 made of any one selected from gold, silver, and nickel, and the conductive thin film operation may be performed by a 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 uneven patterns 102 of the glass substrate P are transferred to the third uneven pattern 112 on one surface of the first hologram metal master 111 (FIG. 6C). In FIG. 6C, reference numeral 113 is a chromium layer.

When the first holographic metal master on which the third uneven pattern is formed is produced, a film master in which the third uneven pattern as a hologram image is continuously used is manufactured using the first hologram metal master. This is commonly referred to as tiling (tiling) as a method of displaying and connecting overlapping image portions so that patterns between adjacent image planes on which irregular patterns are recorded coincide. The tiling according to the present invention can be performed using any one of UV tiling and mechanical tiling.

First, let's 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 and subjected to a laminating process to irradiate and replicate UV light. 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 produce a film master.

The mechanical tiling method is as follows. First, a first hologram metal master is attached to the bundle of recombinations, and conditions such as temperature, moving distance, and pressure strength are input to a computer. When conditions or the like 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 part of the first hologram metal master is calculated, and the remaining area excluding the overlapped part continues the image pattern through the recombination equipment to produce a film master.

The former case is aimed at mass production by embossing, and is a tiling production method that can make a second hologram metal master to be described later, and in the latter case, to improve the production speed of a UV tiling method with passive limitation. As it is designed for high pressure, it is mainly used in the form of recording materials, not in the form of thin films used in the UV tiling method, but in the form of plates with excellent thickness and transparency. This is well known in the related art, so a detailed description is omitted.

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

However, in the case of the first hologram metal master, the glass substrate P becomes a disc, and a conductive thin film layer is formed on the first and second concave-convex patterns formed on one surface of the glass substrate P, but the second hologram metal master In this case, the tiled film master (film or plate) becomes a disc, and there is a difference in forming a conductive thin film layer on a continuous third concave-convex pattern formed on one surface of the film master, except for the same.

That is, a conductive thin film layer is formed on the top surface of the continuous third concavo-convex pattern transferred to the tiled film master, and a second hologram metal master is manufactured by plating a metal having a predetermined thickness on the top surface of the conductive thin film layer. Accordingly, a large area hologram metal master is produced. For example, in the case of a hologram hot stamping foil, the width may be at least 640 mm, and in the case of a hologram film, it may be at least 800 mm.

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

When the third hologram metal master is produced, it is attached to a roll to produce a continuous hologram film. The continuous hologram film may be produced by either a soft embossing method or a hard embossing method well known in the art.

In the soft embossing method, as shown in FIG. 7A, the third hologram metal master 211 is mounted on the outer surface of the metal roller 210, and then the metal roller 210 is 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, a continuous third concave-convex pattern transferred to the third hologram metal master 211 is embossed on one surface of the film, and the structure shown in FIG. The holographic image is transferred.

The hard embossing method is similar to the soft embossing method in that the third hologram metal master 211 is mounted on the outer surface of the metal roller 250, as shown in FIG. 7B, but a pair of left and right rubber rollers 260 rather than a single rubber roller , 270) using a hydraulic pressure to sequentially contact with the metal roller 250 by a certain force F1, F2, respectively, embossing a continuous third uneven pattern transferred to the third hologram metal master 211 on one side of the film It differs from the soft embossing method in that respect.

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 coated with a release layer and laminating the manufactured hologram film.

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

 On the other hand, the present invention does not exclude the case where a hologram sticker is produced, and a laser is irradiated on one surface to form an arbitrary shape design. In the case of hologram stickers, the surface is usually made of a transparent PET film, and there is a vacuum deposition layer on the bottom of the hologram image. When using a laser, any shape, character, or serial number of the vacuum deposition layer can be used without damaging the transparent PET film. Engraving is possible.

The design by laser processing can be made in a shape or text desired by the customer, and can be processed only for a specific part of the hologram image, thereby further preventing forgery or tampering to perform a more complete security function.

In the above, the present invention has been described in terms of preferred embodiments, but this is merely an example, and the present invention is not limited thereto, and may be implemented by being modified in various ways, and further, based on the disclosed technical idea, separate technical features are provided. It will be apparent that it can be carried out in addition.

11: Light generator
13: 1st reflective version
14: optical diffraction grating
17: first focusing lens
22, 23: X, Y driving motor
30: control device

Claims (3)

Preparing a first digital image composed of random characters or shapes;
Preparing a second digital image with a random color having a size capable of covering all the characters or shapes included in the first digital image;
Converting each of the first and second digital images into each of the third and fourth digital images by assigning different shade values to each character, shape, or color of each of the first and second digital images using a computer;
Recording a third digital image as a first uneven pattern on a glass substrate;
Rotating the glass substrate on which the first uneven pattern is recorded at an angle of 90 °;
Recording a third digital image as a second uneven pattern on a glass substrate placed in a state where the third digital image is recorded as a first uneven pattern and then rotated at an angle of 90 °;
Producing first and second holographic metal masters having a third uneven pattern as a hologram image by using the first and second uneven patterns sequentially and repeatedly on the glass substrate;
Producing a film master having a third uneven pattern continuously as a hologram image using a first holographic metal master on which a third uneven pattern is formed;
Forming a second hologram metal master by forming an electric conductive layer on the film master third uneven pattern as a hologram image;
Manufacturing a third hologram metal master for a roll-to-roll embossing machine using a second hologram metal master;
Producing a continuous hologram film using a third hologram metal master;
Producing a hologram sticker by sticking a continuous hologram film;
Method of manufacturing a security hologram sticker label containing. According to claim 1,
When the hologram film is produced, a method of manufacturing a hologram sticker label for security is characterized by adding a step of irradiating a laser on one surface of the manufactured hologram film to form a design of an arbitrary shape. According to any one of claims 1 or 2,
The 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 positioned at a predetermined distance from the light generating device 11, the optical diffraction grating 14 located below the first reflecting plate 13, and the lower part of the optical diffraction grating 14 The first focusing lens 17, the first focusing lens 17, the work plate 1 positioned vertically lower, and the X and Y driving motors 22 for driving the work plate 1 in the X and Y directions. 23), forming an optical system including a light generating device 11 and a control device 30 for controlling the operation of each of the X, Y driving motors 22, 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 the respective rotation angles Zn of the optical diffraction grating 14 are designated and stored in the control device 30 in each of the divided coordinates. To do;
Placing a glass substrate (P) on the upper surface of the work plate (1);
The optical diffraction grating 14 is rotated at a predetermined angle according to the rotational angle Z1 of the optical diffraction grating 14 specified in the 3-1 digital image (X1, Y1) d, and the light generated by the light generating device 11 is removed. 1 With the focusing lens 17, the individual rotation angle Z1 of the optical diffraction grating 14 specified in the 3-1 digital image (X1, Y1) d on the (X1, Y1) p of the glass substrate P is focused Recording the image accordingly;
3-2, 3-3,. . 3-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The rotation angles Z2, Z3,. . The optical diffraction grating 14 is sequentially rotated at a predetermined 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} respectively 3-2, 3-3,. . 3-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The individual rotation angles Z2, Z3,. . Sequentially recording images according to Zn;
Rotating the glass substrate P on which the first uneven pattern by the third digital image is recorded by 90 °;
The fourth digital image is divided into a plurality of (X, Y) d coordinates having a certain area, and the respective rotation angles Zn of the optical diffraction grating 14 are designated and stored in the control device 30 in each of the divided coordinates. To do;
The optical diffraction grating 14 is rotated at a predetermined angle according to the rotational angle Z1 of the optical diffraction grating 14 specified in the 4-1 digital image (X1, Y1) d, 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 in which the first concavo-convex pattern by the third digital image is recorded as the focusing lens 17 Recording an image according to an individual rotation angle Z1 of the optical diffraction grating 14 specified in;
4-2, 4-3,. . 4-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The rotation angles Z2, Z3,. . The first concavo-convex pattern by the third digital image while rotating the optical diffraction grating 14 sequentially at a certain angle according to Zn and converging the light generated by the light generating device 11 as the first focusing lens 17 {(X2, Y2) p, (X3, Y3) p,. . (Xn, Yn) p} respectively 3-2, 3-3,. . 3-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} individual rotation angles Z2, Z3,. . A method of manufacturing a hologram sticker label for security, comprising: sequentially recording images according to Zn.

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