KR102251625B1 - Flexible sheet layered system for selectively adjusting angle of reflection light - Google Patents

Abstract

The present invention discloses a technical idea characterized in that it comprises a flexible layer unit that forms a base layer, is capable of arbitrary bending by an external force, and reflects incident light applied from the outside at a predetermined angle; and a structure layer unit formed on the flexible layer unit by spraying injection particles. The present invention can adjust selectively reflected light according to a location of incident light.

Description

Flexible sheet layered system for selectively adjusting angle of reflection light}

The present invention relates to a system according to a laminated structure of a reflective sheet, and more specifically, selectively adjusting the reflection angle of the reflected light and the amount of reflected light compared to the incident angle of the incident light even when the sheet is flexibly bent in the laminated structure on a flexible sheet. It is a technical field related to a flexible reflective sheet system capable of selectively adjusting a reflection angle so as to be possible.

In the case of reflective sheet or film products, by increasing the visibility of road signs, high-visibility clothing and other items at night, it contributes to greatly increase the visibility of vehicle drivers, heavy-duty machine drivers, and equipment drivers to prevent safety accidents. have.

In addition, it is also used as a material to increase the barcode scanning range in factories or other equipment processes.

In the case of a half-sighted film or a reflective sheet, it may be composed of retro-reflective glass beads, prisms, or micro-encapsulated lenses sealed in a fabric (fiber fabric) or plastic substrate.

Technical attempts for this have been steadily made, and it is true that many prior patent documents exist.

For example, there is a "retroreflective sheet and its manufacturing method (Registration No. 10-1773530, Patent Document 1)".

In the case of the invention according to Patent Document 1, a retroreflective sheet and a method of manufacturing the same, a first protective film, a first thermoplastic adhesive layer formed on the first protective film, a first flame-retardant adhesive layer formed on the first thermoplastic adhesive layer, and , A colored layer including a colored layer formed on the first flame-retardant adhesive layer, a light-transmitting layer formed on the colored layer, and a first light-converging layer formed on the light-transmitting layer, while the light-transmitting layer transmits light incident through the first light-converging layer. A colored region in which some of the scattered light is scattered at the interface with and is emitted to the outside through the first condensing layer, such as fluorescent or phosphorescent light in the colored layer, on the second protective film and the second protective film. A second thermoplastic adhesive layer formed, a second flame-retardant adhesive layer formed on the second thermoplastic adhesive layer to a thickness of a combined thickness of the first flame-retardant adhesive layer and the colored layer, a reflective layer formed on the second flame-retardant adhesive layer, and a second light collecting layer formed on the reflective layer. Including, the reflective layer includes a reflective region for reflecting light incident through the second condensing layer, and a base film adhered on the first condensing layer and the second condensing layer by a bead adhesive layer.

In addition, there is a "base film for retroreflective film (Registration No. 10-0514219, Patent Document 2)".

In the case of the invention according to Patent Document 2, it relates to a base film for a retroreflective film, and relates to a base film for a retroreflective film in which a normal retroreflective part and a weak retroreflective part exist simultaneously in one base film. It presents a difference from the conventional printing method for making a monochromatic or multicolor retroreflective film having an arbitrary letter or design.

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The fiber fabric is outside the paddy field, but reflectors laminated on a general sheet or film have a problem in that the angle of reflection is largely out of the desired due to the changing curvature of the flexible or bent sheet or film.

Registration number 10-1773530 Registration number 10-1773991

A flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention has been devised to solve the conventional problem as described above, and presents the following problems to be solved.

First, it is intended to be able to selectively adjust the direction of the reflected light from the incident light.

Second, even when the laminated structure is flexibly bent, there is no difficulty in adjusting the reflection angle of the incident light.

Third, it is possible to selectively determine the degree of reflected light according to the location of the incident light.

The problem to be solved of the present invention is not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

The flexible reflective sheet system capable of selectively adjusting the reflection angle according to the present invention has the following problem solving means for the problem to be solved.

In the case of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention, a flexible layer unit that forms a base layer, allows arbitrary bending by an external force, and reflects incident light applied from the outside at a predetermined angle; And a structure layer unit formed on the flexible layer unit by spraying with partially melted spray particles.

In the case of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention, the flexible layer unit forms a virtual outline that can be arbitrarily set on an upper surface, and the structure layer unit is the virtual out on the flexible layer unit. It may be characterized in that it is selectively formed only in the line.

In the case of the flexible reflective sheet system capable of selectively adjusting the reflection angle according to the present invention, the structure layer unit is adapted to selectively control at least one of the injection timing, the injection speed, and the injection position between the partially melted injection particles to be injected. Accordingly, it may be characterized in that the stacking height for each region is selectively adjusted.

In the case of the flexible reflective sheet system capable of selectively adjusting the reflection angle according to the present invention, the structure layer unit is adapted to selectively control at least one of the injection timing, the injection speed, and the injection position between the partially melted injection particles to be injected. Accordingly, it may be characterized in that the particle density for each region is selectively controlled.

In the case of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention, the structure unit is characterized in that the refractive index and transmittance of incident light are selectively adjusted for each area according to the selectively adjusted particle density for each area. I can.

In the case of the flexible reflective sheet system capable of selectively adjusting the reflection angle according to the present invention, the structure layer unit is selectively sprayed, coated, or transferred, further comprising a reflection layer unit that selectively adjusts a reflection angle of incident light. It can be characterized.

In the case of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention, the reflection layer unit is provided in a predetermined area, and a wavelength band for reflected light is selectively adjusted compared to a wavelength band of incident light incident on the predetermined area. A display area portion; And a reflection region portion provided in the partition region partitioned from the predetermined region and selectively reflecting incident light incident on the partition region.

In the case of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention, the flexible layer unit includes: a body layer forming an upper surface of the flexible layer unit and forming the virtual outline on the surface; A microprism formed on a lower surface of the body layer and in which unit cells having a predetermined downward pattern are repeatedly formed; And a metal foil having a predetermined upward pattern matching the predetermined downward pattern of the microprism and reflecting incident light incident on the predetermined upward pattern.

In the case of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention, the flexible layer unit is a body layer that forms an upper surface of the flexible layer unit and forms the virtual outline on the surface. ; A microprism formed on a lower surface of the body layer and in which unit cells having a predetermined downward pattern are repeatedly formed; A binder provided below the microprism and supporting the microprism through portions spaced apart from each other and protruding upward; And a base film attached to the lower surface of the binder and fixedly attaching the binder.

In the case of the flexible reflective sheet system capable of selectively adjusting the reflection angle according to the present invention, the microprism is i) a quadratic shape in which one side is convex downward and one side is an upper surface, ii) a square pyramid shape in which a downward convex and square side is an upper surface, or iii) It may be characterized in that it is formed in at least one of the downward convex hemispherical shape.

A flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention having the above configuration provides the following effects.

First, the reflector is not formed by conventional injection, such as injection or blow, but can be formed by spraying in the form of particles.

Second, it is possible to control the density of the tissue by controlling the voids of the partially melted particles sprayed in the form of fine particles.

Third, the structure in the form of fine particles can be maintained according to the purpose of the incidence angle and the reflection angle despite the formation of a flexible curved surface.

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

1 is a perspective view illustrating that a virtual outline and a structure layer unit are formed on a flexible layer unit in a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention.
2 is a plan view and a side view in which a structure layer unit is formed of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention.
3 is a first side view of a flexible layer unit of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention.
4 is a second side view of a flexible layer unit in a flexible reflective sheet system capable of selectively adjusting a reflection angle according to another embodiment of the present invention.
5 is a side view showing an incident angle of incident light and a reflection angle of reflected light on a flexible layer unit of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an exemplary embodiment of the present invention.
6 is a partially enlarged perspective view showing various aspects of a micro prism in a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention.
7 is a partially enlarged view of a structure layer unit showing that particle densities of partially melted spray particles are selectively formed in a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention.
FIG. 8 is a partially enlarged view showing that the light transmittance and the refractive index can be adjusted according to the particle density control of the spray particles in the flexible reflective sheet system capable of selectively adjusting the reflection angle according to an embodiment of the present invention. .
9 is a plan view and a side view illustrating a laminated reflection layer unit of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an exemplary embodiment of the present invention.
10 is a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention, showing a scattering effect of reflected light or a hologram effect according to adjustment of the reflection layer unit, or adjusting the amount of light compared to incident light and the wavelength band of reflected light. It is a side view that makes it possible.
FIG. 11 is another embodiment of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention, after forming a structure layer unit on the cover layer, and then forming the structure layer unit on the flexible layer unit. to be.
FIG. 12 is a part of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention, showing that the refractive index or transmittance of reflected light is selectively adjusted by selectively adjusting the particle density according to the layer level It is an enlarged view.

A flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention can be modified in various ways and has various embodiments. Specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it should be understood to include all changes, equivalents, and substitutes included in the technical spirit and scope of the present invention.

1 is a perspective view illustrating that a virtual outline and a structure layer unit are formed on a flexible layer unit in a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention. 2 is a plan view and a side view in which a structure layer unit is formed of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention. 3 is a first side view of a flexible layer unit in a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention. 4 is a second side view of a flexible layer unit in a flexible reflective sheet system capable of selectively adjusting a reflection angle according to another embodiment of the present invention. 5 is a side view showing an incident angle of incident light and a reflection angle of reflected light on a flexible layer unit of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an exemplary embodiment of the present invention. 6 is a partially enlarged perspective view showing various aspects of a micro prism in a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an exemplary embodiment of the present invention. 7 is a partially enlarged view of a structure layer unit showing that particle densities of partially melted spray particles are selectively formed in a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention. FIG. 8 is a partially enlarged view showing that the light transmittance and the refractive index can be adjusted according to the particle density control of the spray particles in the flexible reflective sheet system capable of selectively adjusting the reflection angle according to an embodiment of the present invention. . 9 is a plan view and a side view illustrating a laminated reflection layer unit of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention. 10 is a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention, showing a scattering effect of reflected light or a hologram effect according to adjustment of the reflection layer unit, or adjusting the amount of light compared to incident light and the wavelength band of reflected light. It is a side view that makes it possible. FIG. 11 is another embodiment of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention, after forming a structure layer unit on the cover layer, and then forming the structure layer unit on the flexible layer unit. to be. FIG. 12 is a part of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to an embodiment of the present invention, showing that the refractive index or transmittance of reflected light is selectively adjusted by selectively adjusting the particle density according to the layer level It is an enlarged view.

In the case of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention, as shown in FIG. 2, a flexible layer unit 100, a structure layer unit 200, or less structure layer It is called a unit.).

First, as shown in FIG. 1, the flexible layer unit 100 moves forward while passing through the rollers 1, and in this process, the first nozzle 10 disposed on the flexible layer unit 100 Through the structure layer unit 200 is formed by spraying in the form of spray particles.

The flexible layer unit 100 may be implemented in the form of a film, a sheet, a label, etc., which forms a base layer and is formed to be optionally bent by an external force. In addition, the flexible layer unit 100 may be formed of a single layer or various layers, which will be described later.

In the case of the flexible layer unit 100, it is preferable to have a function of reflecting incident light applied from the outside at a predetermined angle.

The predetermined angle may include retroreflection reflected at the incident angle of the incident light, total reflection having the same incident angle and reflection angle of the incident light, and diffuse reflection reflecting the reflected light compared to the incident light in various and random directions.

Here, it goes without saying that the flexible layer unit 100 may implement retroreflection, total reflection, or diffuse reflection, depending on the purpose.

In the case of the structure layer unit 200, as shown in FIG. 1, it is sprayed in the form of partially melted spray particles through the first nozzle 10, and is provided on the flexible layer unit 100 to be stacked.

As shown in FIG. 1, in the case of the flexible layer unit 100, a virtual out line (L, hereinafter referred to as a virtual outline) that can be set arbitrarily may be formed on the upper surface thereof.

The virtual outline L means a virtual line on the flexible layer unit 100 that is programmed to inject spray particles sprayed through the first nozzle 10.

Digitally, the first nozzle 10 sprays partially melted spray particles, and the injection timing and location of the sprayed spray particles, the degree of melting, and control of the location of the sprayed spray particles are controlled through programming. Control becomes possible.

The virtual outline L corresponds to a virtual line that cannot be observed with the naked eye on the flexible layer unit 100, but when the first nozzle 10 sprays the spray particles, the substance is revealed in the form of an aggregate of spray particles. .

As described above, the structure layer unit 200 is selectively formed only in the virtual outline L, which is revealed in the form of one layer, that is, a stack, as shown in FIG. 2.

In the case of the structure layer unit 200, as shown in FIG. 7, through selective control of at least one of the injection timing, injection speed, and injection position between the partially melted injection particles to be injected, There can be a difference in the stacking height.

Referring to FIG. 7, the area of zone #1 and the area of zone #2 are not physically partitioned areas on the flexible layer unit 100, but the sprayed particles are stacked higher in zone #1. , Zone #2 may have a relatively low height by controlling the sprayed particles.

Of course, as shown in FIG. 7, it is possible to selectively control the particle density. That is, in the case of the structure layer unit 200, by selectively adjusting at least one or more of the injection timing, the injection speed, or the injection position between the partially melted injection particles to be injected, it is possible to selectively control the particle density for each area. It is done.

For example, in FIG. 7, zone #1 and zone #2 are not physically partitioned areas on the flexible layer unit 100 as described above, but through the control of the sprayed particles, the separation distance between the particles, that is, Make it possible to adjust the air gap.

In addition, as shown in FIG. 12, it is possible to arbitrarily adjust the particle density according to the layer, and through this, it is possible to adjust the refractive index or transmittance of the reflection angle of the reflected light compared to the incident light of the incident angle.

In addition, through the functional characteristics of the structure layer unit 200 as described above, the structure layer unit 200, as shown in FIG. 8, is the refractive index of the reflected light compared to the incident light or the incident light according to the selectively adjusted particle density for each area. The transmittance of is selectively adjusted for each area. That is, the control of the particle density is to control the reflectance, angle of reflection, and transmittance of incident light and reflected light.

In the case of a flexible reflective sheet system capable of selectively adjusting a reflection angle according to the present invention, as shown in FIG. 9, a reflection layer unit 300 may be further included.

In the case of the reflection layer unit 300, the reflection angle of the reflected light is selectively adjusted compared to the incident angle of the incident light by selectively spraying, coating, or transferring onto the structure layer unit 200.

In the case of the reflection layer unit 300, as illustrated in FIGS. 9 and 10, a discern area unit 310 and a reflection area unit 320 may be included.

The reflection layer unit 300 may also be sprayed, transferred, and sprayed in a manner that is sprayed through the second nozzle 20 as shown in FIG. 9.

As shown in FIGS. 9 and 10, the dissun area unit 310 corresponds to an aggregate of particles that are sprayed to set a predetermined area and target and match the predetermined area.

The particles arranged in the dis-ray area 310 selectively adjust a wavelength band of reflected light to be reflected compared to incident light, so that various colors can be selectively observed visually by a person. Of course, in the case of a selectively observed color, it may be formed differently according to the selectively controlled wavelength band.

Among the particles of the dis-ray area 310, when light outside the wavelength band of blue light is absorbed in the visible light region, only blue light is selectively reflected, so that only blue light is observed to the human eye and only blue is seen accordingly. .

As shown in FIG. 9, various colors and shapes may be observed differently according to the sprayed shape of the dis-sun area unit 310.

In the case of a predetermined area, since the second nozzle 20 is also in the form of a digital printing nozzle that is digitally sprayed, the predetermined area may exist virtually like the above-described virtual outline L as it is programmed. Such an area can be visually observed by a set of particles constituting the dis-sun area part 310.

In the case of the reflection area unit 320, it is provided in a partition area partitioned from a predetermined area, and as an example in FIG. 9, it may be disposed only in an area visible as a mirror.

In the case of the reflection area unit 320, it is transferred onto the structure layer unit 200, so that the reflection angle of the reflected light compared to the incident light incident angle can be selectively reflected in the form of diffuse reflection or a hologram.

3 and 4, in the case of the flexible layer unit 100, as a first embodiment, a body layer 110, a microprism 120, and a metal foil 130 ) Can be included.

In the case of the body layer 110, the upper surface of the flexible layer unit 100 is formed, and as described above, a virtual outline L is formed on the surface.

The body layer 110 may be implemented in the form of a film, and may be implemented in the form of a transparent resin or a transparent sheet.

In the case of the microprism 120, it is formed on the lower surface of the body layer 110 and has a predetermined downward pattern, and the unit cells of the downward pattern are repeatedly formed.

The predetermined downward pattern formed by the unit cells of the microprism 120 is i) convex downward and a quadratic shape with one side of the top surface, ii) a quadrangular pyramid shape with a convex downward and a square side of the upper surface, iii) a downward convex hemispherical shape, or iv) It may be formed as at least one of an octagonal pyramid shape in which the downwardly convex and octagonal sides are the upper surface.

In the case of the microprism 120, it is also preferable to be made of a material having good transmittance in the form of a transparent resin or the like.

In the case of the metal foil 130, as shown in FIGS. 3 and 4, a predetermined upward pattern matching a predetermined downward pattern of the microprism 120 is provided to reflect incident light incident on a predetermined upward pattern. Corresponds to the configuration.

Since it is important to form the metal foil 130 so that the reflectance of light is high, it is preferable to form a foil of aluminum (Al) as much as possible.

That is, in the flexible layer unit 100, incident light passes through the body layer 110, passes through the microprism 120, and is reflected on the metal foil 130 formed by contacting the bottom surface of the microprism 120. , The traveling path of the reflected light varies according to the shape of the microprism 120 as described above.

As a second embodiment of the flexible layer unit 100, as shown in FIG. 4, a body layer 110, a microprism 120, a binder 140, and a base film 150 may be included.

In the case of the body layer 110, the upper surface of the flexible layer unit 100 is formed, and as described above, a virtual outline L is formed on the surface.

The body layer 110 may be implemented in the form of a film, and may be implemented in the form of a transparent resin or a transparent sheet.

In the case of the microprism 120, it is formed on the lower surface of the body layer 110 and has a predetermined downward pattern, and the unit cells of the downward pattern are repeatedly formed.

The predetermined downward pattern formed by the unit cells of the microprism 120 is i) convex downward and a quadratic shape with one side of the top surface, ii) a quadrangular pyramid shape with a convex downward and a square side of the upper surface, iii) a downward convex hemispherical shape, or iv) It may be formed as at least one of an octagonal pyramid shape in which the downwardly convex and octagonal sides are the upper surface.

In the case of the microprism 120, it is also preferable to be made of a material having good transmittance in the form of a transparent resin or the like.

Unlike the metal foil 130 formed directly on the bottom surface of the microprism 120, in the second embodiment, air is formed on the bottom surface of the microprism 120, and as shown in FIG. 4, a binder ( 140 is provided under the microprism 120 and supports the microprism 120 through portions spaced apart from each other and protruding upward.

In the first embodiment, light is reflected due to the metal foil 130 under the microprism 120, but when only air exists under the microprism 120, the light is not reflected and stays in the air. The reflectance of light is significantly lowered.

Through the proper arrangement of the first embodiment of Fig. 3 and the second embodiment of Fig. 4, it is possible to plant a pattern of a desired character, such as KOR.

In the case of the base film 150, as shown in FIG. 4, it is attached to the lower surface of the binder 140, and the binder 140 is fixedly attached.

The scope of the rights of the present invention is determined by the matters described in the claims, and the parentheses used in the claims are not described for selective limitation, but are used for clear elements, and descriptions in parentheses are also interpreted as essential elements. It should be.

L: virtual out line
1: roller
10: first nozzle
20: second nozzle
100: flexible layer unit
110: body layer
120: microprism
130: metal foil
140: binder
150: base film
200: structure layer unit
300: reflection layer unit
310: Discern area
320: reflection area portion

Claims (11)

A flexible layer unit forming a base layer and reflecting incident light applied from the outside at a predetermined angle; And
Including a structural stacking unit formed on the flexible layer unit by spraying with the spray particles,
The structural stacking unit,
The stacking height for each region is selectively adjusted by selectively adjusting at least one of the injection timing, the injection speed, and the injection position between the injected particles,
Particle density for each area is selectively adjusted by selectively controlling at least one of the injection timing, the injection speed, and the injection position between the injected particles,
The flexible layer unit,
It forms a virtual border that can be set arbitrarily at the top,
The structural stacking unit,
Is selectively formed in the virtual boundary line above the flexible layer unit,
The structural stacking unit,
The refractive index or transmittance of incident light is selectively adjusted for each area according to the selectively adjusted particle density for each area,
The flexible layer unit,
A body layer forming an upper surface of the flexible layer unit and forming the virtual boundary line on the surface;
A microprism formed under the body layer and in which unit cells having a predetermined downward pattern are repeatedly formed;
A metal foil having a predetermined upward pattern matching the predetermined downward pattern of the microprism and reflecting incident light incident on the predetermined upward pattern;
A body layer forming an upper surface of the flexible layer unit and forming the virtual boundary line on the surface;
A microprism formed on a lower surface of the body layer and in which unit cells having a predetermined downward pattern are repeatedly formed;
A binder provided below the microprism and supporting the microprism through portions spaced apart from each other and protruding upward; And
A flexible reflective sheet system comprising a base film attached to a lower surface of the binder and fixedly attaching the binder.
delete delete delete delete The method of claim 1, wherein the system,
The flexible reflective sheet system, characterized in that it further comprises a reflection layer unit selectively spraying, coating, conducting, or transferring to an upper or lower portion of the structural stacking unit to selectively adjust a reflection angle of reflected light compared to an incident angle of incident light.
The method of claim 6, wherein the reflection layer unit,
A flexible reflective sheet system, comprising: a display area provided in a predetermined area and selectively adjusting a wavelength band for reflected light compared to a wavelength band of incident light incident on the predetermined area.
The method of claim 6, wherein the reflection layer unit,
A flexible reflective sheet system comprising: a reflection area portion provided in a partition area divided from the predetermined area and selectively reflects incident light incident on the partition area.
delete delete The method of claim 1, wherein the predetermined angle is
A flexible reflective sheet system, characterized in that it can be formed individually and selectively for each arbitrarily selected area.

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