KR20200048921A - Manufacturing method of security hologram sticker labels - Google Patents

Abstract

Provided is a method of manufacturing security hologram sticker labels. The method comprises the steps of: preparing a first digital image including random characters or shapes; preparing a second digital image including a plurality of concentric circles with different radii using a computer, wherein an outermost concentric circle has a Fresnel lens shape to cover all of the characters and shapes included in the first digital image; generating digital interference fringes in each area of the characters and shapes constituting each of the first digital image and the second digital image using the computer and converting the digital interference fringes into third and fourth digital images; recording the third digital image on a glass substrate as a first uneven pattern; recording the fourth digital image in duplicate as a second uneven pattern on the glass substrate on which the third digital image is recorded as the first uneven pattern; producing, when the first and second uneven patterns are sequentially recorded in duplicate on the glass substrate, a first hologram metal master on which the third uneven pattern is formed as a hologram image using the first and second uneven patterns; producing a film master on which the third uneven pattern is continuously formed as the hologram image using the first hologram metal master on which the third uneven pattern is formed; producing a second hologram metal master by forming an electric conductive layer on the third uneven pattern of the film master; producing a third hologram metal master for embossing using the second hologram metal master; producing a continued hologram film using the third hologram metal master; and producing hologram stickers by attaching and processing the continued hologram film. According to the present invention, the method can produce hologram sticker labels in an economically efficient manner.

Description

Manufacturing method of security hologram sticker labels}

The present invention relates to a method of 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 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, the object of the present invention is a method for producing a hologram sticker label for security with versatility and economy that can sufficiently exert counterfeit or tamper-proof with the hologram image itself. It is in offer.

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 made of a Fresnel lens shape made of a plurality of concentric circles having different radii using a computer, but having a outermost concentric circle covering all characters or shapes included in the first digital image; Generating a digital interference fringe for each area of characters or shapes constituting each of the first digital image and the second digital image using a computer and converting them into third and fourth digital images; Recording a third digital image as a first uneven pattern on a glass substrate; Overlapping and recording the fourth digital image as the second uneven pattern on the glass substrate in which the third digital image is recorded as the first uneven pattern; 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 third uneven pattern of the film master; Producing a third hologram metal master for embossing 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 12, the first reflection plate located at a certain distance from the light generating device 11, the light generating device 11 (12) Spatial light modulator 40 positioned above and modulating and reflecting light incident from the first reflecting plate 12, first focusing lens 16 positioned below the first reflecting plate 12, and first focusing Lens 16, the work plate (1) located in the vertical lower, X, Y driving motor (22, 23) for driving the work plate (1) in the X, Y direction, the light generating device 11 and X, Y driving Constructing an optical system including a motor (22, 23) and a control device (30) for controlling the operation of each of the spatial light modulators (40); The third digital image is divided into a plurality of (X, Y) d coordinates having a predetermined area, and the individual third-n digital images (Xn, Yn) d of each of the divided coordinates are stored in the controller 30. step; Placing a glass substrate (P) on the upper surface of the work plate (1); A control signal for the exposure pattern of the exposed and unexposed areas of the image contained in the 3-1 digital image (X1, Y1) d is transmitted to the spatial light modulator 40, and is generated by the light generating device 11 After irradiating the generated light with the spatial light modulator 40, the light is reflected according to the exposure patterns of the exposed and unexposed areas included in the 3-1 digital image (X1, Y1) d, and then the first focusing lens ( 16) recording the exposure patterns of the digital images (X1, Y1) d on the (X1, Y1) p of the glass substrate P in a focused state; 3-2, 3-3,. . 3-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The control signals for the exposure patterns of the exposed and unexposed areas included in each are sequentially transmitted to the spatial light modulator 40, and the light generated by the light generating device 11 is spaced. Irradiated with the optical modulator 40, 3-2, 3-3,. . 3-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} After reflecting light according to the exposure pattern of the exposed and unexposed areas contained in each, then the first focusing lens 16 focuses sequentially, { (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} sequentially recording each exposure pattern; The fourth digital image is divided into a plurality of (X, Y) d coordinates having a certain area, and the individual fourth-n digital images (Xn, Yn) d of each of the divided coordinates are stored in the controller 30. step; A control signal for the exposure pattern of the exposed and unexposed areas of the image contained in the 4-1 digital image (X1, Y1) d is transmitted to the spatial light modulator 40, and generated by the light generating device 11 The light is irradiated with the spatial light modulator 40 to reflect light according to the exposure patterns of the exposed and unexposed areas included in the 4-1 digital image (X1, Y1) d, and then the first focusing lens ( 16) recording the exposure patterns of the digital images (X1, Y1) d on the (X1, Y1) p of the glass substrate (P) in which the first uneven pattern by the third digital image is recorded in a focused state; 4-2, 4-3,. . 4-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The control signals for the exposure patterns of the exposed and unexposed areas included in each are sequentially transmitted to the spatial light modulator 40, and the light generated by the light generating device 11 is spaced. Irradiated with the optical modulator 40, 4-2, 4-3,. . 4-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} After reflecting light according to the exposure pattern of the exposed and unexposed areas contained in each, then the first focusing lens 16 focuses sequentially, { (X2, Y2) p, (X3, Y3) p,. . (Xn, Yn) p} respectively 4-2, 4-3,. . 4-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} sequentially recording each exposure pattern;

The present invention can maintain a very high level of security with the hologram itself by integrating a double hologram image, and can duplicate the specific design desired by the customer on the hologram image to further enhance product differentiation and security. Furthermore, it is possible to provide a highly competitive economically in that it can provide a hologram having a high level of security and differentiated characteristics to a continuous film.

1A and 1B are schematic diagrams of first and second digital images, respectively.
2A and 2B are schematic diagrams of third and fourth digital images converted by a computer in FIGS. 1A and 1B, respectively.
Figure 3 is a schematic diagram of an optical system in the present invention.
Fig. 4 is a schematic configuration diagram of the hologram image recorded by Fig. 3;
5 is a schematic configuration diagram of manufacturing a first hologram metal master in the present invention.
6A and 6B are schematic configuration diagrams for manufacturing 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 first and second digital image preparation and the third and fourth digital image conversion step, the first and second uneven pattern recording step on the glass substrate, the first hologram metal master It includes a manufacturing 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. Let's look at each step in detail.

First, a first digital image as shown in FIG. 1A is prepared. The first digital image is a part constituting the holographic image on 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.

Next, a second digital image is prepared. The second digital image functions as a security means of the first digital image constituting the hologram image, and may be designed by a computer operation, and is preferably formed in a fresnel lens shape having a plurality of concentric circles having different radii. At this time, in the Fresnel lens, the outermost concentric circles can cover all characters or shapes included in the first digital image.

The reason why the present invention proposes a Fresnel lens shape is that the lens itself is not only a means for visually making the hologram image stand out most, but also it is difficult to properly implement a hologram image when copying using a copying machine or the like. Fresnel lenses are both convex and concave.

This operation can be performed by a commercial software such as Photoshop, illustration, etc., and FIG. 1B shows an example of a second digital image made of a convex lens type Fresnel lens designed by Photoshop. In the Fresnel lens of FIG. 1B, the gap gradually increases toward the center, so that the Fresnel zone plate design is made according to the focal length setting of the lens, thereby increasing the gap toward the center of the lens.

When the first and second digital images are prepared, each of them is converted into third and fourth digital images using a computer. That is, by using a computer generated hologram (or computer generated hologram, or CGH), a digital interference pattern is generated for each area having a shape constituting each of the first and second digital images, and this is converted into each of the third and fourth digital images.

2A and 2B each show an example of each of the third and fourth digital images converted through CGH for each of the first and second digital images disclosed in FIGS. 1A and 1B, respectively. Each of the third and fourth digital images is an area in which exposure by light (hereinafter referred to as an exposure area) and an area in which exposure is not required (hereinafter referred to as an unexposed area) are recorded when a hologram image is recorded on a glass substrate using an optical system to be described later. It consists of an exposure pattern as an interference pattern.

In more detail, the exposure area / non-exposure area in each of the 3rd and 4th digital images is a micro mirror provided in a spatial light modulator (SLM) constituting an optical system (off) / As corresponding to operation (on), the micro-mirror does not operate in the exposed area portion (shown in black in each of FIGS. 2A and 2B), and the non-exposed region portion (shown in white in each of FIGS. 2A and 2B) is a micro mirror This works. Needless to say, the exposure pattern may be variously changed according to an optical device to be implemented.

When each of the first and second digital images is converted to each of the third and fourth digital images through a computer, the first irregular pattern is first recorded on the glass substrate using an optical system. To this end, as shown in FIG. 3, the light generating device 11, the first reflecting plate 12, the first focusing lens 16, the working plate 1, the X, Y driving motors 22, 23, and the control device 30 ), An optical instrument including the spatial light modulator 40 is required.

The light generating device 11 may be made of laser light as a means for generating light. The first reflective plate 12 is positioned at a predetermined distance from the light generating device 11. A parallel light conversion lens (not shown) may be provided between the light generating device 11 and the first reflective plate 12. The first focusing lens 16 is positioned under the first reflecting plate 12 and focuses light reflected from the first reflecting plate 12. The first focusing lens may be divided into a convex lens, a filter, and a concave lens.

The spatial light modulator 40 is an apparatus for individually controlling and reflecting hundreds of thousands to millions of micro mirrors integrated in a pixel unit (micrometer interval) according to an input control signal, and is located above the first reflector 12 The light incident from the first reflective plate 12 is modulated and reflected.

The spatial light modulator does not reflect the light incident on the micro-mirror operating according to the transmitted control signal (on / hereinafter, the non-exposed area), and the light incident on the micro-mirror that does not operate because the control signal is not transmitted is external It is reflected (off / hereinafter exposed area), and the present invention uses an on / off operation configuration of a micro mirror provided in such a spatial light modulator.

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 16. 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 spatial light modulator 40, 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 each of the individual third-n digital images (Xn, Yn) d of each of the divided coordinates is controlled ( 30), and place the glass substrate (P) on the upper surface of the work plate (1). At this time, each of (Xn, Yn) d is composed of an exposed area / non-exposed area pattern, as described above.

When the glass substrate P is placed on the work plate 1, a control signal for the exposure pattern of the exposure area / non-exposure area included in the 3-1 digital image (X1, Y1) d stored in the control device 30 is received. It transmits to the spatial light modulator 40 and operates the light generating device 11. Accordingly, the light generated by the light generating device 11 enters the spatial light modulator 40 through the first reflective plate 12.

Light is incident through the first reflector 12 while the control signal for the exposure pattern of the exposure area / non-exposure area included in the 3-1 digital image (X1, Y1) d is input to the spatial light modulator 40. If it is, each micro-mirror provided in the spatial light modulator 40 reflects incident light while being inactive (off) / operated (on) according to the control signal of the exposure pattern. That is, only light incident on the micro mirrors that are turned off according to the exposure pattern among the light incident on the spatial light modulator 40 is reflected and emitted.

The light modulated and emitted from the spatial light toilet 40 exposes the (X1, Y1) p coordinate regions of the glass substrate P while being focused by the first focusing lens 16 through the first reflecting plate 12. do. Accordingly, the exposure pattern recorded in the 3-1 digital image (X1, Y1) d coordinate region is recorded in the (X1, Y1) p coordinate region of the glass substrate P. If the glass substrate P is a positive type, the off portion of the spatial light modulator forms a valley of the glass substrate, and if the glass substrate is a negative type, the on portion of the spatial light modulator is a valley of the glass substrate. Will achieve

When writing of the exposure pattern recorded in the 3-1 digital image (X1, Y1) d coordinate area is completed, the operation of the light generating device 11 is stopped (if a separate shutter is mediated, the light generating device Even if the operation is not stopped, the working plate 1 moves due to the operation of the X and Y axis driving means 22 and 23. As described above, the degree of movement of the work plate 1 is interlocked with each coordinate (X, Y) d of the digital image.

When the work plate 1 moves to the next work position, a control signal for the exposure pattern of the exposure area / non-exposure area included in the 3-2 digital image (X2, Y2,) d is transmitted to the spatial light modulator 40. Then, the light generating device 11 is operated. The light generated by the light generator 11 enters the spatial light modulator 40, and the light modulated by the spatial light modulator 40 is focused to a certain size through the first focusing lens 16, and then third- 2 Record the exposure pattern recorded in the digital image (X2, Y2) d coordinate region in the (X2, Y2) p coordinate region of the glass substrate P.

When the exposure work for the 3-2 digital image is completed, the work plate 1 is moved in association with each coordinate (X, Y) d of the 3 rd digital image, and then moved, 3-3, 3-4,. . The 3-n digital image is sequentially exposed to the corresponding coordinate area of the glass substrate P. When the exposure operation for the third-n digital image is completed, an intended exposure pattern as exemplarily represented in FIG. 2A is recorded on the glass substrate P.

When the third digital image is recorded as the first uneven pattern on the glass substrate, the fourth digital image is repeatedly recorded as the second uneven pattern on the glass substrate where the third digital image is recorded as the first uneven pattern. The recording of the second uneven pattern on the glass substrate is substantially the same as the recording method of the first uneven pattern described above.

First, the fourth digital image is divided into a plurality of (X, Y) d coordinates having a predetermined area, and then each of the individual fourth-n digital images (Xn, Yn) d of each of the divided coordinates is controlled by the controller 30 To save. In the case of a third digital image, a glass substrate P in which a first concavo-convex pattern is recorded is placed on the upper surface of the work plate 1, and each of (Xn, Yn) d is composed of an exposed area / non-exposed area pattern. Is the same as

In this state, the control signal for the exposure pattern of the exposure area / non-exposure area contained in the 4-1 digital image (X1, Y1) d stored in the control device 30 is transmitted to the spatial light modulator 40, and The generator 11 is operated. Accordingly, the light generated by the light generating device 11 enters the spatial light modulator 40 through the first reflective plate 12.

Light is incident through the first reflector 12 while the control signal for the exposure pattern of the exposure area / non-exposure area included in the 4-1 digital image (X1, Y1) d is input to the spatial light modulator 40. If it is, each micro-mirror provided in the spatial light modulator 40 reflects incident light while being inactive (off) / operated (on) according to the control signal of the exposure pattern. That is, only light incident on the micro mirrors that are turned off according to the exposure pattern among the light incident on the spatial light modulator 40 is reflected and emitted.

The light modulated and emitted from the spatial light toilet 40 exposes the (X1, Y1) p coordinate regions of the glass substrate P while being focused by the first focusing lens 16 through the first reflecting plate 12. do. Accordingly, in the (X1, Y1) p coordinate area of the glass substrate P, the exposure pattern recorded in the 3-1 digital image (X1, Y1) d coordinate area and the 4-1 digital image (X1, Y1) d coordinate The exposure pattern recorded in the area is overwritten.

Here, if the glass substrate (P) is a positive type, the inactive part of the spatial light modulator forms a valley of the glass substrate, and if the glass substrate is a negative type, the on (on) part of the spatial light modulator is of the glass substrate. The goal is the same as in the case of the third digital image, and it is preferable that each of the third and fourth digital images is recorded in the same way.

When the recording of the exposure pattern recorded in the 4-1 digital image (X1, Y1) d coordinate area is completed, the operation of the light generating device 11 is stopped, and the operation of the X and Y axis driving means 22, 23 is performed. Due to this, the work plate 1 moves. The movement of the work plate 1 should also be made in conjunction with each coordinate (X, Y) d of the digital image.

When the work plate 1 moves to the next work position, a control signal for the exposure pattern of the exposure area / non-exposure area included in the 4-2 digital image (X2, Y2,) d is transmitted to the spatial light modulator 40. Then, the light generating device 11 is operated. The light generated by the light generator 11 enters the spatial light modulator 40, and the light modulated by the spatial light modulator 40 is focused to a predetermined size through the first focusing lens 16, and then the fourth- 2 The exposure pattern recorded in the digital image (X2, Y2) d coordinate region is recorded in the (X2, Y2) p coordinate region of the glass substrate P.

Also, since the exposure pattern recorded in the 3-2 digital image (X2, Y2,) d is already recorded in the (X2, Y2) p coordinate area of the glass substrate P, the 4-2 digital image (X2, The exposure pattern recorded in the Y2) d coordinate area is overlapped and recorded.

When the exposure work for the 4-2 digital image is completed, the work plate 1 is moved in association with each coordinate (X, Y) d of the 4th digital image, and then moved, 4-4, 4-4,. . The 4-n digital image is sequentially exposed to the corresponding coordinate area of the glass substrate P. When the exposure operation for the 4-n digital image is completed, the intended exposure pattern as exemplarily illustrated in FIG. 2B is overlaid on the glass substrate P.

Figure 4 shows the final holographic image completed through this operation. The hologram image produced according to the present invention has a lens effect added to an arbitrary shape or character, and has a great versatility in terms of security in that it can easily prevent counterfeiting or tampering by a digital copying machine by itself. do.

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. 5, 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. 5A and 5B). 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. 5C). In FIG. 5C, 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 by a method substantially the same as the first hologram metal master disclosed in FIG. 5.

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.

The soft embossing method, as disclosed in FIG. 6A, mounts the third hologram metal master 211 on the outer surface of the metal roller 210, and then uses the hydraulic pressure to move the metal roller 210 with a constant force F to the rubber roller 220. 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 side of the film to emulate a holographic image as shown in FIG. 4. Will be transferred.

The hard embossing method is similar to the soft embossing method of mounting the third hologram metal master 211 on the outer surface of the metal roller 250, as shown in FIG. 6B, 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
12: 1st reflective board
22, 23: X, Y driving motor
30: control device
40: spatial light modulator

Claims (3)

Preparing a first digital image composed of random characters or shapes;
Preparing a second digital image made of a Fresnel lens shape made of a plurality of concentric circles having different radii using a computer, but having a outermost concentric circle covering all characters or shapes included in the first digital image;
Generating a digital interference fringe for each area of characters or shapes constituting each of the first digital image and the second digital image using a computer and converting them into third and fourth digital images;
Recording a third digital image as a first uneven pattern on a glass substrate;
Overlapping and recording the fourth digital image as the second uneven pattern on the glass substrate in which the third digital image is recorded as the first uneven pattern;
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 third uneven pattern of the film master;
Producing a third hologram metal master for embossing 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 12 positioned at a predetermined distance from the light generating device 11, and positioned above the first reflecting plate 12, modulate and reflect light incident from the first reflecting plate 12 The spatial light modulator (40), the first focusing lens (16) positioned under the first reflecting plate (12), the first focusing lens (16), the working plate (1), and the working plate (1) positioned vertically below X, Y driving motors 22 and 23 driving in the X and Y directions, light generators 11 and X, Y driving motors 22 and 23, and a control device for controlling the operation of each spatial light modulator 40 Constructing an optical system comprising (30);
The third digital image is divided into a plurality of (X, Y) d coordinates having a predetermined area, and the individual third-n digital images (Xn, Yn) d of each of the divided coordinates are stored in the controller 30. step;
Placing a glass substrate (P) on the upper surface of the work plate (1);
A control signal for the exposure pattern of the exposed and unexposed areas of the image contained in the 3-1 digital image (X1, Y1) d is transmitted to the spatial light modulator 40, and is generated by the light generating device 11 After irradiating the generated light with the spatial light modulator 40, the light is reflected according to the exposure patterns of the exposed and unexposed areas included in the 3-1 digital image (X1, Y1) d, and then the first focusing lens ( 16) recording the exposure patterns of the digital images (X1, Y1) d on the (X1, Y1) p of the glass substrate P in a focused state;
3-2, 3-3,. . 3-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The control signals for the exposure patterns of the exposed and unexposed areas included in each are sequentially transmitted to the spatial light modulator 40, and the light generated by the light generating device 11 is spaced. Irradiated with the optical modulator 40, 3-2, 3-3,. . 3-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} After reflecting light according to the exposure pattern of the exposed and unexposed areas contained in each, then the first focusing lens 16 focuses sequentially, { (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} sequentially recording each exposure pattern;
The fourth digital image is divided into a plurality of (X, Y) d coordinates having a certain area, and the individual fourth-n digital images (Xn, Yn) d of each of the divided coordinates are stored in the controller 30. step;
A control signal for the exposure pattern of the exposed and unexposed areas of the image contained in the 4-1 digital image (X1, Y1) d is transmitted to the spatial light modulator 40, and generated by the light generating device 11 The light is irradiated with the spatial light modulator 40 to reflect light according to the exposure patterns of the exposed and unexposed areas included in the 4-1 digital image (X1, Y1) d, and then the first focusing lens ( 16) recording the exposure patterns of the digital images (X1, Y1) d on the (X1, Y1) p of the glass substrate (P) in which the first uneven pattern by the third digital image is recorded in a focused state;
4-2, 4-3,. . 4-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} The control signals for the exposure patterns of the exposed and unexposed areas included in each are sequentially transmitted to the spatial light modulator 40, and the light generated by the light generating device 11 is spaced. Irradiated with the optical modulator 40, 4-2, 4-3,. . 4-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} After reflecting light according to the exposure pattern of the exposed and unexposed areas contained in each, then the first focusing lens 16 focuses sequentially, { (X2, Y2) p, (X3, Y3) p,. . (Xn, Yn) p} respectively 4-2, 4-3,. . 4-n digital image {(X2, Y2,) d, (X3, Y3) d,. . (Xn, Yn) d} sequentially recording each exposure pattern; a method for manufacturing a hologram sticker label for security.

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