EP2423403A2 - Printed gypsum board - Google Patents

Abstract

The gypsum plaster board (01a) has an inner layer body (02) made of gypsum and a decorative layers made of plasters (03,04) are provided on a visible side (05) and a rear side (06). The peripheral edges have sectional edge areas (08a) in form of circle (09) and bezel on the visible side. A multi-color printing (07) is applied on the visible side of the gypsum board.

Description

The invention relates to a plasterboard panel for use in interior construction according to the preamble of claim 1.

As is well known, gypsum plasterboard panels are used for drywall construction to make walls and cover ceilings. Gypsum plaster boards are known in numerous designs from different manufacturers. These usually consist of an inner layer of plaster, which is usually surrounded on both sides by a cover layer of cardboard. Furthermore, a plasterboard may have additional layer elements, such as a vapor barrier or the like.

Furthermore, it is known that it is usually necessary to fill the plasterboard after attachment to the wall or the ceiling in the transition and subsequently to paint or wallpaper. It is also known to use color wallpaper for decoration.

A disadvantage of the aforementioned, well-known design is that first a plasterboard must be mounted, which is subsequently fill and paint. Furthermore, it is disadvantageous that in order to achieve decorative effects it is necessary to stick appropriate color wallpapers or posters to the plasterboard in the finished assembled and filled state. Consequently, this means an increased workload in the production of appropriate walls or ceilings. This is particularly disadvantageous if, for decorative reasons, the walls or ceilings must be changed several times, as is customary, for example, in exhibition construction. Consequently, the total cost of appropriate production of the plasterboard, their assembly with subsequent trowelling, painting and pasting with, for example, photo wallpaper disproportionately high.

Furthermore, from the prior art designs are known in which plates are coated for interior or furniture construction with a special paper layer or primer. Subsequently, in a further process, a color print can be applied to the coated plate. For this purpose, an ink jet method is used, which allows a large variety of colors and ensures a fast print. To avoid the rapid aging and the protection of the sensitive color layer, a protective layer of clear coat is applied if necessary. Examples of such solutions are found in the publications DE 10 2007 013 135 A1 and DE 10 2007 049 784 A1 disclosed.

However, it is undiminished disadvantageous that the regular plasterboard can not be used directly. In all such known designs of decorated plasterboard or the like, it is previously necessary to form a specific substrate and this, for example, apply a teilbeharzte paper layer. Although this allows for the use of cost effective and flexible inkjet printing technology, the previously necessary process incurs additional costs. Thus, hardly any advantage over the subsequent application of a photo wallpaper is achieved. This in turn leads to the failure to implement in interior design.

The object of the present invention is therefore to produce a plasterboard in which a decorative effect is present, without the need for pasting by means of a poster or the prior application of specific paper layers or the like.

The present object is achieved by a solution according to the invention according to claim 1.

An inventive method for producing corresponding plasterboard is specified in claim 11.

Advantageous embodiments are the subject of the dependent claims.

A plasterboard for use in interior design initially consists of an inner layer of plaster and at least one cover layer of cardboard. Here, the plasterboard on a visible side and a back, wherein the visible side is that side which is visible in the later installed state. Here, the peripheral edges of the visible side of the plasterboard at least in sections, an edge region in the form of a rounding and / or chamfer. On the one hand, this is due to the manufacturing process, and on the other hand, the plasterboard is predominantly brittle and to that extent a sharp-edged corner would easily lead to breakage or the like.

According to the invention, a multicolored print is applied directly to the cover layer on the visible side on the visible side of the plasterboard panel. Here, the color printing covers at least partially the flat visible side of the plasterboard.

For this purpose, a multicolor ink is used according to the invention for the color printing, wherein the ink is cured by means of ultraviolet light. This printing technique has succeeded in realizing corresponding properties of the plasterboard with colored printing. By curing by means of ultraviolet light, it is possible to color print directly on the plasterboard without further pretreatment to be able to raise. The bleeding of the color usually occurring in the prior art can thus no longer take place. The measure of the application of a special paper layer required for this purpose in the prior art can thus likewise be dispensed with. Thus, the detailed reproduction of the desired representations is given. Furthermore, this embodiment of the invention leads to a particularly durable surface of the plasterboard, without causing color fading or discoloration. This has, in contrast to the known designs with the printed by ink jet printing plates a much higher resistance, so that can account for any special loads on the plate of the otherwise common clearcoat.

The ink can be chosen from any color, provided that it can be determined in the CMYK color space. The use of the CMYK color definition is well known to those skilled in the art and needs no further explanation. At least essentially any colors are possible.

Furthermore, it is possible to provide the plasterboard at the abutting edges in each case a subsequent plasterboard with a paragraph. This can be formed either directly from the plasterboard or by the staggered backing of the plasterboard with another plasterboard or insulation board. Since, in the embodiment according to the invention, filling of the joints is not absolutely necessary or even disadvantageous, the heel avoids a continuous gap between the individual plasterboard panels. This is especially necessary in fire protection applications.

However, the embodiment is particularly advantageous if the entire flat visible side of the plasterboard is printed by means of color printing. In this case, furthermore, the color print can at least partially cover the edge region.

By the newly created embodiment with a plasterboard with colored print on the visible side, it has been possible for the first time to get rid of the elaborate assembly and production of the plasterboard with sticking by posters. Due to the newly created design, it is possible to use the plasterboard without further reworking directly in the interior, without the need for subsequent Verspachtelns or gluing. Consequently, thus eliminating a variety of necessary operations in the manufacture of appropriate interior fittings. Thus, a significant cost advantage over the prior art can be achieved.

Furthermore, it is of particular advantage if the edge region is also printed, in particular if decorations running over several plates are required. In this case, a not entirely avoidable offset of one plane of the plate to the next plane without detriment to the visual impression. This is based in particular on the fact that a pressure running into the chamfer or rounding is perceived in normal observation as a deliberate transition from one plate to the next plate and not as an assembly error with sharp-edged, but offset in the surface plates.

Although it is known to provide plasterboard on the back with a company logo, but this is not comparable to the inventive color printing. In the state of the art, corresponding company logo or lettering is predominantly applied in monochrome by screen printing. Furthermore, the color penetrates into the cardboard layer and runs in this case. Thus, in no case a detailed reproduction is possible and also a long-term durability is not given.

Although it is not necessary for the gypsum board to have a special characteristic or color on its upper side, it is advantageous if the cover layer of cardboard on the visible side before application of the color print is essentially a white color or without coloring of the cardboard has a brownish appearance. The vote a white color is advantageous in that, if not the entire plasterboard should be printed, but only in sections, and thus the rest of the substrate should appear advantageously white. Furthermore, the use of a white cardboard layer as the top layer of the plasterboard is suitable in that the ink application is not adversely affected by an otherwise darker ground. It should be noted here is the embodiment of the invention that no additional pretreatment of a regular freely available plasterboard should be made. In this respect, the choice of unprinted plasterboard in terms of their color from the existing designs to select and these directly below without a flat coating or the like. To print.

By contrast, the use of an undyed cardboard layer in a brownish appearance is advantageous in that it is particularly cost-effective in the production of the plasterboard without the color printing. In this respect, a particularly inexpensive starting material can be selected for the cover layer of cardboard.

In particular cases of use of the plasterboard, in particular for sound insulation, it is advantageous if they have a plurality of recesses. Here, the recesses are to be arranged on the visible side, which protrude at least into the gypsum layer. Depending on the place of use and the method of use, it may be advantageous if the recesses completely penetrate the plaster layer, but the cover layer of cardboard on the back remains intact. Likewise, it would be possible to let the recesses completely penetrate the plasterboard. Designs of such unprinted plasterboard are also known as perforated plates.

In an alternative embodiment, it is conceivable to apply the color printing on the visible side, at least in sections, directly to the layered body without an intermediate cardboard layer. Due to the particular Advantageous method using an ultraviolet curing ink, it is also possible to apply the color printing directly on the composite plaster body. This is not disadvantageous in respect of the durability and appearance of the color printing, but in this case, the gypsum board has less breakage resistance.

Can be used in a particularly advantageous manner, the direct printing of the gypsum layer in local, with respect to the plate stability uncritical areas in which the top layer of cardboard was removed for functional or design reasons. This applies in particular to the attachment of chamfers on cut edges or recesses. Although these chamfers can be relatively small and can be limited in the dimensions of the thickness of the cover layer, so the pressure of the invention can be performed in an advantageous embodiment to the bevel and this up to the gypsum layer. This achieves two things. On the one hand, the detachment of the cover layer against the chamfer is counteracted, since the color print reaches over the cover layer down to the plaster layer. On the other hand, the visibility of the plaster layer is prevented, since it is now covered by the pressure. To increase the longevity and the abrasion resistance is advantageously applied to the visible side, at least the size of the color print, a clearcoat. Advantageously, in this case, the clear coat is applied on the entire visible side, regardless of the size of the color print. By this choice it is possible in an improved way to wipe the surface can be given as well as an advantageous gloss effect.

Advantageously, the visible side of the plasterboard is both scratch-resistant and waterproof. This is realized in a particularly advantageous manner directly by the color printing. Thus, there is no need for further measures to achieve the required performance properties. In this respect, the surface is covered with a wet cloth can be wiped off using ordinary household cleaners without fear of damage to the color print.

Furthermore, it is particularly advantageous if the color printing over a longer period is lightfast. Here, the color printing and optionally the clearcoat is chosen such that, at least in applications in the interior of buildings over the period of at least two years of color printing without any noticeable color changes or fading is lightfast. It is obvious to the person skilled in the art that the period of time during continuous direct sunlight is significantly shorter and, in the case of shading with respect to sunlight or strong artificial irradiation, the period is significantly greater.

In a particular embodiment, the plasterboard panel comprises at least one connecting element. This penetrates the laminated body, wherein the connecting element is covered on the visible side directly or indirectly by the color print.

According to the need to attach the plasterboard in drywall to a substrate, fasteners are needed. In the prior art, it is customary to attach plasterboard by means of screws in a wooden construction. Here, the screws penetrate the plasterboard and a countersunk head of the screw closes flush with the plate. In an advantageous embodiment, however, it is also possible to introduce the connecting element in advance in the plasterboard. In an inventive embodiment, the plasterboard is provided on the visible side with the color print. In this particular embodiment, the color printing directly or indirectly covers the preassembled connecting element so that it does not appear.

In addition to the previous embodiment, it is advantageous if the connecting element is initially filled on the visible side and / or is covered by a cap. Here forms the overfilled Surface or the cap has a substantially flush surface with the visible side of the plasterboard. However, it is also without great disadvantage, for example, if there is a slight curvature and thus there is a minimum projection over the surface of the visible side. This embodiment makes it possible, in particular, to be able to cover a screw slot, for example. Due to the superimposed pressure, the connecting element becomes virtually invisible in the plasterboard.

For quick re-decoration of clad by means of the plasterboard panel according to the invention wall or ceiling sections, it is particularly advantageous if as well as on the visible side on the back of a substantially same multicolor print is applied. In this case, the essentially similar structure relates to the type of printing layer and its advantageous application of a clearcoat when there is an increased requirement. Obviously, it is in these cases two different motives by means of color printing on the front and back to apply. Thus, it is possible, if necessary in a simple way to remove the two-sided plasterboard from a fixture, to turn and reinsert in the attachment. For example, a change of decoration between a summer and a winter motif is thus possible in a simple and fast manner, without the removal of the existing printed plasterboard whose storage and outsourcing of a replaced printed plasterboard before their attachment is necessary.

In a further case of use for covering corner regions of walls, ceilings or supports, pipes, boxes or the like, it is particularly advantageous if the plasterboard is designed such that it must be bent for mounting starting from the flat plate, but in this case a one-piece design remains. This means that the mounted plasterboard no longer runs in a single plane but around a corner. For this purpose, the Plasterboard on the back of a linear notch, which penetrates the top layer on the back and at least partially the plaster layer. It is necessary in any case that the top layer of cardboard on the visible side is maintained. In the implementation can advantageously extend the notch over the entire extension of the plasterboard, but also interrupted in sections or multiple times, so that the remaining areas are removed during assembly or break it up here. The multicolored print can hereby optionally be applied before the formation of the notch or advantageously subsequently. To stabilize the gypsum board provided with one or more indentations in order to ensure damage-free handling and transport, a stabilizing agent overflowing the indentation, such as a strut, can advantageously be applied temporarily on the rear side.

• Zunächst ist die Herstellung oder Bereitstellung einer unbedruckten ebenen Gipskartonplatte erforderlich. Ob in der Produktion die unbedruckten Gipskartonplatten direkt vor der Bedruckung fertig gestellt werden, oder als Zukaufteil der Produktion vorliegen, ist ohne Belang.

The newly created solution uses an inventive method. In this case, the following steps are carried out to produce a color-printed plasterboard panel which can form a wall or ceiling section visible over the entire size of the plasterboard panel and is realized in particular in a design corresponding to the previous description:

• First of all, the production or provision of an unprinted flat plasterboard is required. Whether the unprinted plasterboard panels are finished in the production directly before printing, or are available as a purchased part of the production is irrelevant.

The plasterboard is printed in a subsequent passage on the visible side with a multi-colored ink.

Immediately after the application of the ink, it is irradiated with ultraviolet light. This leads to the curing of the ink and the generation of multi-color printing. Particularly advantageous in this case is the use of a method in which the ink applied during the current Printing process is immediately cured by means of ultraviolet light. It would also be conceivable to use a UV irradiation after the application of the ink for the entire print image or a larger area, but thus does not prevent the undesired bleeding of the ink.

By the new method, the production of the decorative surface can be shifted from the mounting location of the plasterboard to the place of manufacture of the plasterboard. Thus, the pressure or the decorative surface can be produced much cheaper than that would be possible at a mounting location.

In an advantageous embodiment, the plasterboard used in the printing on a plurality of the cover layer on the visible side penetrating recesses. These recesses are incorporated for this purpose either during the production process of the plasterboard or optionally below before printing.

Advantageously, after applying the multicolor printing, the visible side is provided with a clearcoat.

It is advantageous in the later use of the plasterboard according to the invention, if it already contains fasteners. Thus, in an advantageous embodiment of the manufacturing process prior to printing with the ink, the connecting element is introduced into the plasterboard. This can initially be done arbitrarily, with a screwing or insertion from the visible side is particularly advantageous in terms of Halt in the plate.

Furthermore, it is particularly advantageous if the connecting element is covered on the visible side before the pressure. This is due to the fact that a connecting element will usually be a screw and this in turn usually leaves a drive on the visible side open. Consequently, the cover serves to cover the screw drive. This can be done in a simple manner by attaching a cap or by troweling.

In a further embodiment, it is particularly advantageous if, after completion of the visible side, the one-sided printed plasterboard is turned over and in a second process, the second side is treated in the same way as the visible side, i. Likewise, a multicolor print is applied directly to the top layer of cardboard.

In the following, possibilities for the execution according to the invention are presented by means of two examples.

Fig. 1

eine Gipskartonplatte 01a mit Abrundung 09 in einem Teilschnitt;

Fig. 2

eine Gipskartonplatte 01b mit Fase 10a in einem Teilschnitt;

Fig. 3

eine Gipskartonplatte 01c mit Fase 10b in einem Teilschnitt;

Fig. 4

eine Gipskartonplatte 01d mit einer Ausnehmung im Teilschnitt;

Fig. 5

eine weitere Gipskartonplatte 11 mit einem Verbindungselement 12;

Fig. 6

eine Gipskartonplatte 16a mit zwei Einkerbungen 17;

Fig. 7

die Gipskartonplatte 16b aus Fig. 6 im geknickten Zustand.

Show it:

Fig. 1

a plasterboard 01a with rounding 09 in a partial section;

Fig. 2

a plasterboard 01b with chamfer 10a in a partial section;

Fig. 3

a plasterboard 01c with chamfer 10b in a partial section;

Fig. 4

a plasterboard 01d with a recess in partial section;

Fig. 5

another gypsum board 11 with a connecting element 12;

Fig. 6

a gypsum board 16a with two notches 17;

Fig. 7

the plasterboard 16b Fig. 6 in the bent state.

In the FIG. 1 is a plasterboard 01a shown on average, this presentation is limited to the edge region 08a and the adjacent area. It is known to the person skilled in the art that the plasterboard panel 01a has a far greater dimension and only a small section is shown here. The plasterboard 01a consists primarily of the layered body 02, which is formed from the material gypsum becomes. Furthermore, the plasterboard 01a from this example comprises a cover layer of cardboard 03 on the visible side 05 of the plasterboard 01a, and a cover layer of cardboard 04 on the back 06 of the plasterboard 01a. Here again, it is obvious that after the plasterboard 01a has been installed at the place of use, the visible side 05 is still visible, whereas the rear side 06 is concealed. The peripheral edge region 08a of a plasterboard 01a characteristically has a rounding 09a. This is on the one hand to allow the corresponding production of the plasterboard 01a with complete coverage of the core layer of gypsum 02 to the edge of the plasterboard 01a by means of the cover layer 03 made of cardboard, as well as further breaking out of the edge 08a due to the brittleness of Prevent material.

According to the invention, the plasterboard panel 01a furthermore has a multicolor pressure 07a on the visible side 05. This can on the one hand cover the entire flat surface on the visible side 05 of the plasterboard 01a. It is likewise possible to provide only a region of the visible side 05 with the color print 07a. In particular, in the case of the embodiment according to the invention of a plasterboard 01, it is possible to let the color print 07a extend into the edge area 08a. This can be further guided to almost the end of the plasterboard 01a.

In the FIG. 2 becomes alternative to Fig. 1 sketched an embodiment in which the edge region 08b of the plasterboard 01b is provided with a chamfer 10. This is particularly advantageous in an abutting use of several inventive plasterboard 01b. In a preferred embodiment, the color print 07b also partially covers the edge area 08b or the chamfer 10b. Since there is no feathering in use, the chamfer 10 leaps in flatness from one gypsum board 01b to a following one Plasterboard in plan view almost invisible and it can be a color print on several plasterboard 01b distributed.

In the FIG. 3 sketched an embodiment is shown in which the gypsum board 01c is cut at the peripheral edges and so far has no over the edge extending cover layer 03. Furthermore, this embodiment shows on the visible side a small chamfer 10c in the edge region 08c, in which the cover layer 03 is partially removed except for the plaster layer 02. In this case, the pressure 07c covers the chamfered edge region 08c and thus lies above the cut edge of the cover layer 03 and directly on the plaster layer 02.

An example of an embodiment with a plasterboard 01d in the manner of a perforated plate sketches the FIG. 4 , This plasterboard 01d has a plurality of recesses 15 (only one shown), which penetrate the cover layer 03 on the visible side and largely the gypsum layer 02. As an alternative, embodiments are possible for this purpose, in which the recesses 15 completely penetrate the plasterboard panel 01. At least it is provided in this case that the pressure extends to the edge of the recess and insofar no safety clearance is provided. The shape of the recess is in principle arbitrary, with a round or square shape in plan view is the rule.

Another example shows the FIG. 5 with a plasterboard 11, in which a connecting element 12 is integrated. Again, only a small section of the plasterboard 11 is sketched in section. This consists, as in the previous example, of the laminated body 02 of gypsum with a cover layer of cardboard 03 on the visible side 05 and a cover layer of cardboard 04 on the back 06. It is particularly advantageous in this embodiment that the connecting element 12 pre-assembled in the Plasterboard 11 can be integrated. In this case, for example, with the connecting element 12, a further fastening element 13 may be connected. This further fastening element 13 For example, it can be hooked into complementary grooves on the site. Thus, the subsequent attachment of the plasterboard 01 requires no further fastening means, in particular not from the side of the visible side 05. It is essential in this embodiment that the connecting element 12 is covered by the color printing 07. In this respect, the connecting element 12 is hidden from the side of the visible side 05 substantially invisible. To improve, in particular in the presence of, for example, slotted screws, the use of a screw cap 14 is advantageous or optionally a filling applicable. By this measure, a flat surface with respect to the cover layer 03 on the visible side 05 is achieved with the screw cap 14. Consequently, no bumps occur in color printing 07, which could otherwise be detrimental to the visual appearance. A special variant is in the FIG. 6 outlined. Here, the printed plasterboard 16 a on the back 06 notches 17. These notches 17 extend linearly over the plasterboard panel 16a over preferably the entire extent and penetrate the cover layer 04 on the rear side 06 and largely or completely the gypsum layer 02. Depending on the intended bending angle are different notches 17.1 (with approximately 90 ° angle) or 17.2 (in the manner of a groove) advantageous. These indentations 17 are expediently introduced before printing 07. In order to be able to ensure damage-free handling and transport, it is possible to temporarily apply one or more stabilizing agents 19, such as glued roof battens or the like, on the rear side 06.

The buckling of the embodiment Fig. 6 outlines the example FIG. 7 , Here, the plasterboard 16b is installed twice kinked can thus shock and seamless bridges two corners by means of buckling 18.1 and 18.2. It is essential that the pressure on the corners without interruption even after the buckling 18 from the previously flat plasterboard 16a runs.

Claims (16)

Plasterboard (01, 11, 16) for use in interior work with an inner layer body (02) made of gypsum and a cover layer (03, 04) made of cardboard on the visible side (05) and back (06), wherein the peripheral edges on the visible side (05) at least in sections have an edge region (08) in the form of a rounding (09) and / or bevel (10),
characterized,
that a multicolor print (07) is applied by means of a multi-colored ink on the visible side (05) on the covering layer (03) of the gypsum plasterboard (01, 11, 16), wherein the ink is cured by means of ultraviolet light, wherein the color print (07 ) at least partially covering the flat viewing side (05) of the plasterboard (01, 11, 16). Plasterboard (01, 11, 16) according to claim 1,
characterized,
that the color print (07) covers the entire flat visible side (05) of the gypsum plasterboard (01, 11, 16) and / or at least partially covers the edge region (08). Plasterboard (01, 11, 16) according to one of claims 1 to 2,
characterized,
in that the plasterboard panel (01, 11, 16) has a multiplicity of essentially identical recesses (15) penetrating the cover layer (03) on the visible side (05), the color printing (07) surrounding at least a majority of the recesses (15). Plasterboard (01, 11, 16) according to one of claims 1 to 3,
characterized,
that the color print (07) on the visible side (05) at least in sections directly on the body layer (02) is applied from gypsum. Plasterboard (01, 11, 16) according to one of claims 1 to 4,
characterized,
in that on the visible side (05) at least the size of the color print (07), in particular on the entire visible side (05), a clear coat is applied. Plasterboard (01, 11, 16) according to one of claims 1 to 5,
characterized,
that the visible side (05) of the plasterboard (01, 11) is scratch-resistant and water-resistant, the pressure in the interior of the application being lightfast over a period of at least two years. Plasterboard (01, 11, 16) according to one of claims 1 to 6,
characterized,
in that the plasterboard panel (01, 11, 16) comprises at least one connecting element (12) which penetrates the laminated body (02), wherein the connecting element (12) on the visible side (05) is covered directly or indirectly by the color print (07). Plasterboard (01, 11, 16) according to claim 7,
characterized,
that the connecting element (12) on the visible side (05) is over-filled and / or covered by a cap (14) and a substantially flush surface with the visible side (05) of the plasterboard (01, 11, 16) is given. Plasterboard (01, 11, 16) according to one of claims 1 to 6,
characterized,
that the back (06) one to the visible side (05) having substantially identical structure with as a multi-color printing. Plasterboard (01, 11, 16) according to one of claims 1 to 8,
characterized,
that the plasterboard (01, 11, 16) on the back (06) has a linear notch (17), in particular over the entire extent of the plasterboard (01, 11, 16), wherein for mounting the plasterboard (01, 11, 16) along the notch (17) can be bent and in the installed state has a corner (18) seamlessly extending pressure (07). Method for producing a color-printed plasterboard panel (01, 11, 16), which can form a wall or ceiling section visible in the entire size of the plasterboard panel (01, 11, 16), in particular for producing a plasterboard panel (01, 11, 16 ) according to one of the preceding claims - production or provision of an unprinted flat plasterboard, Printing on a visible side (05) of the plasterboard with a multicolored ink, instantaneous irradiation of the applied ultraviolet light ink with curing of the ink, wherein a multicolored print (07) on the visible side (05) is formed. Method according to claim 11,
characterized,
that during production or after production of the unprinted plasterboard a plurality of recesses (15) penetrating the cover layer (03) on the visible side (05) are introduced. Method according to claim 11 or 12,
characterized,
that finally on the visible side (05) a clear coat is applied. Method according to one of claims 11 to 13,
characterized,
that after provision of the unprinted plasterboard at least one connecting element (12) is screwed or inserted directly or in a previously introduced bore. Method according to claim 14,
characterized,
that the connecting element (12) prior to operation of printing on the visible side (05) with a cap (14) or of a filler is covered. Method according to one of claims 11 to 13,
characterized,
that after completion of the visible side (05), the plasterboard (01) is turned and in a similar procedure, the back (06) is printed.

Images