Light-transmitting structure, window structure and printed material

Abstract

To provide a light-transmitting structure, a window structure and printed materials with adjustable visibility.SOLUTION: A printed material 2 is arranged on a light-transmitting member 53 provided on a wall portion 51 of a building. The printed material 2 transmits light from the outside SP1 of the building to the inside SP2 of the building visibly when seen from the inside SP2 of the building. Therefore, people inside SP2 of the building can clearly see the view outside SP1 of the building through a window. On the other hand, the printed material 2 conceals views of the inside SP2 of the building with the pattern of the printed material 2 when seen from the outside SP1 of the building. Therefore, people outside SP1 of the building cannot see the view of the inside concealed by the pattern of the printed material 2. This suppresses seeing into the inside SP2 from the outside SP1 of the building.SELECTED DRAWING: Figure 19

Description

[Technical Field]

[0001] The present invention relates to a light-transmitting structure, a window structure, and a printed matter. [Background technology]

[0002] Conventionally, a light-transmitting structure, for example, a window structure, has been known in which a window having a plate-shaped transparent member is provided in the wall of a building (Patent Document 1). A person inside the room can see the outside scenery through the window. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2000-64482 Summary of the Invention [Problem to be solved by the invention]

[0004] In the above-mentioned window structures, curtains or blinds must be installed to prevent the interior of the building from being seen through the window from the outside. However, when the window is covered with curtains or blinds, the view outside cannot be seen from inside the building. When lace curtains are used, it is difficult to see inside from the outside, but it also makes it difficult to see outside from inside. Therefore, there is a need for a structure that allows a good view of the outside from inside while blocking the view inside from outside. Furthermore, there is a need to normally prevent the interior of the structure from being seen from the outside, but to allow the interior of the structure to be seen from outside when necessary. For these reasons, there is a need for a structure that allows the visibility of the light-transmitting structure to be adjusted.

[0005] The present invention aims to provide a light-transmitting structure, a window structure, and a printed matter that can adjust visibility. [Means for solving the problem]

[0006] [1] The light-transmitting structure of the present invention is a light-transmitting structure for a structure having an internal space, and comprises a light-transmitting member provided in the structure, and a printed matter placed on the light-transmitting member and having a picture printed thereon, wherein when the inside of the structure is darker than the outside, the printed matter conceals the appearance of the inside of the structure with the picture on the printed matter when viewed from the outside of the structure, and when the inside of the structure is brighter than the outside, the printed matter transmits light from the inside of the structure to the outside of the structure so that it can be seen.

[0007] A printed material is disposed on a light-transmitting member provided in a structure. When viewed from the outside of the structure, the printed material conceals the interior of the structure with a pattern on the printed material, and when the inside of the structure is brighter than the outside, the printed material transmits light from the inside of the structure to the outside of the structure so that it can be seen from the outside. When a printed material with such properties is used, the interior of the structure can be concealed from the outside while allowing the outside to be seen from the inside, or the interior can be brightened so that the interior can be seen from the outside. This makes it possible to adjust the visibility depending on the application of the light-transmitting structure.

[0008] [2] In the light-transmitting structure of [1] above, the structure is a building, the light-transmitting structure is a window structure, and the printed matter may transmit light from outside the building into the interior of the building so that it can be seen from inside the building, and conceal the interior of the building with the image on the printed matter when seen from outside the building. In this case, people inside the building can clearly see the view outside the building through the window. On the other hand, when seen from outside the building, the printed matter conceals the interior of the building with the image on the printed matter. Therefore, people outside the building cannot see the interior view concealed by the image on the printed matter. Therefore, it is possible to prevent people from looking into the interior from outside the building. As a result, it is possible to clearly see the view outside from inside the building, and it is possible to block views into the building from outside.

[0009] [3] In the light-transmitting structure of [1] above, a light source is provided inside the structure, and when the light source is off, the printed material conceals the interior of the structure with a pattern on the printed material when viewed from the outside of the structure, and when the light source is on, the printed material transmits light from the interior of the structure to the outside of the structure so that it can be seen from the outside of the structure. In this case, when it is necessary to check the interior of the structure, by turning on the light source, it is possible to visually check the interior of the structure from the outside of the structure or to use the light from the interior of the structure externally. On the other hand, when it is not necessary to check the interior of the structure, by turning off the light source, it is possible to conceal the interior with a pattern on the printed material when viewed from the outside of the structure.

[0010] [4] In the light-transmitting structure of [3] above, the haze of the combination of the printed matter and the light-transmitting member may be 30% or less. In this case, sufficient visibility can be ensured when viewing the interior from the outside when the light source is on.

[0011] [5] In the light-transmitting structures [1] to [4] above, the printed matter may be laminated on the outer surface of the light-transmitting member. In this case, the printed matter also conceals the light-transmitting member when viewed from the outside, making it difficult to see the position of the window.

[0012] [6] In the light-transmitting structures [1] to [4] above, the printed matter may be laminated on the inner surface of the light-transmitting member, which can prevent the printed matter from being damaged by wind and rain.

[0013] [7] The window structure of the present invention comprises a light-transmitting member provided on a wall of a building, and a printed matter placed on the light-transmitting member and having a picture printed thereon, the printed matter allowing light from outside the building to be visible when viewed from inside the building and concealing the interior of the building with the picture on the printed matter when viewed from outside the building.

[0014] A printed material is placed on a light-transmitting member provided on a wall of a building. When viewed from inside the building, the printed material transmits light from outside the building into the interior of the building so that it can be seen. Therefore, people inside the building can clearly see the view outside the building through the window. On the other hand, when viewed from outside the building, the printed material conceals the view inside the building with the image on the printed material. Therefore, people outside the building cannot see the view inside the building that is concealed by the image on the printed material. Therefore, it is possible to prevent people from looking inside the building from outside. As described above, the view outside can be clearly seen from inside the building, and it is possible to block views into the building from outside.

[0015] [8] In one aspect, the printed matter of the present invention is a printed matter for a window structure that is placed on a light-transmitting member provided on the wall of a building and has a pattern printed on it, and when viewed from inside the building, allows light from outside the building to be visible and transmitted into the interior of the building, and when viewed from outside the building, the pattern on the printed matter conceals the appearance of the interior of the building.

[0016] The printed matter in [8] above can achieve the same effects as the window structure in [7] above. [Effects of the Invention]

[0017] According to the present invention, a light-transmitting structure, a window structure, and a printed matter capable of adjusting visibility are provided. [Brief explanation of the drawings]

[0018] [Figure 1] FIG. 1 is a cross-sectional view schematically showing a display device according to Example 1-1. [Figure 2] FIG. 2 is a cross-sectional view schematically showing a picture print layer included in the display device shown in FIG. [Figure 3] FIG. 3 is a cross-sectional view schematically showing a printed matter according to Example 1-2. [Figure 4] FIG. 4 is a cross-sectional view schematically showing a white pattern layer included in the printed matter shown in FIG. [Figure 5] FIG. 5 is a cross-sectional view schematically showing a printed matter according to Example 1-3. [Figure 6] FIG. 6 is a cross-sectional view schematically showing a printed matter according to Example 1-4. [Figure 7] FIG. 7 is a cross-sectional view schematically showing a picture print layer included in a display device according to Example 2-1. [Figure 8] FIG. 8 is a table showing the configuration of printed matter according to Experimental Examples 1 to 3. [Figure 9] FIG. 9 is a cross-sectional view schematically showing a picture print layer included in a display device according to Example 3-1. [Figure 10] FIG. 10(a) is a schematic diagram showing the color combinations of the picture print layer, and FIG. 10(b) is a schematic diagram showing the color combinations of the picture print layer according to a comparative example. [Figure 11] FIG. 11 is a schematic diagram showing a specific example of a color combination of the picture print layer. [Figure 12] FIG. 12 is a cross-sectional view schematically showing a picture print layer included in a display device according to Example 4-1. [Figure 13] FIG. 13(a) is a schematic diagram showing the color combinations of the picture print layer, and FIG. 13(b) is a schematic diagram showing the color combinations of the picture print layer according to a comparative example. [Figure 14] FIG. 14 is a schematic diagram showing a specific example of a color combination of the picture print layer. [Figure 15] Figure 15(a) is a view of the light source covered with printed matter viewed from the front side when the power of the light source 3 is OFF, and Figure 15(b) is a view of the light source covered with printed matter viewed from the front side when the power of the light source 3 is ON. [Figure 16] FIG. 16 is a perspective view showing a window structure according to an embodiment of the present invention. [Figure 17] FIG. 17 is a cross-sectional view of the window structure. [Figure 18] FIG. 18 is a cross-sectional view of the window structure. [Figure 19] Figure 19(a) shows a printed material that conceals the interior of a building as seen from outside, and (b) shows the visual information when a person inside the building sees the outside view through the printed material. [Figure 20]FIG. 20(a) is a schematic diagram showing the state of the light-transmitting structure when the light source is off, and FIG. 20(b) is a schematic diagram showing the state of the light-transmitting structure when the power supply is on. [Figure 21] FIG. 21 shows the results of evaluating visibility in each example in which the haze was adjusted. [Figure 22] 10 is a photograph showing the details of an experiment for evaluating visibility. [Figure 23] FIG. 23(a) is a schematic diagram showing an example of a light-transmitting structure when the light source is off, and FIG. 23(b) is a schematic diagram showing an example of a light-transmitting structure when the power supply is on. [Figure 24] FIG. 24(a) is a schematic diagram showing an example of a light-transmitting structure when the light source is off, and FIG. 24(b) is a schematic diagram showing an example of a light-transmitting structure when the power supply is on. [Figure 25] FIG. 25(a) is a schematic diagram showing an example of a light-transmitting structure when the light source is off, and FIG. 25(b) is a schematic diagram showing an example of a light-transmitting structure when the power supply is on. [Figure 26] FIG. 26(a) is a schematic diagram showing an example of a light-transmitting structure when the light source is off, and FIG. 26(b) is a schematic diagram showing an example of a light-transmitting structure when the power is on. [Figure 27] FIG. 27(a) is a schematic diagram showing an example of a light-transmitting structure when the light source is off, and FIG. 27(b) is a schematic diagram showing an example of a light-transmitting structure when the power supply is on. [Figure 28] FIG. 28(a) is a schematic diagram showing an example of a light-transmitting structure when the light source is off, and FIG. 28(b) is a schematic diagram showing an example of a light-transmitting structure when the power supply is on. [Figure 29] FIG. 29(a) is a schematic diagram showing an example of a light-transmitting structure when the light source is off, and FIG. 29(b) is a schematic diagram showing an example of a light-transmitting structure when the power supply is on. DETAILED DESCRIPTION OF THE INVENTION

[0019] [About printed materials] First, examples of printed materials used in this embodiment will be described with reference to FIGS. 1 to 15. However, the contents described with reference to FIGS. 1 to 15 are merely examples of printed materials that can be employed in the present invention. Therefore, the layer structure of the printed material exemplified in the description with reference to FIGS. 1 to 15 does not limit the layer structure of the printed material employed in the present invention. Note that in the window structure according to this embodiment, the printed material does not necessarily have to be used together with a light source, but may also be used together with a light source. The characteristics of the printed material when used with a light source will also be described. Therefore, for the purpose of describing the printed material, FIG. 1 shows the printed material incorporated into a display device. In this specification, when a printed material is formed by printing dot-shaped ink, the layer structure of the printed material may include a structure in which parts of one layer and parts of another layer are in the same position in the thickness direction or may intersect with each other. When observed in a plan view, a structure in which a pattern forming one layer and a pattern forming another layer partially overlap and do not overlap in other parts can also be included. Note that each layer in the layer structure of the printed material can also be considered as a stack of printed patterns. When used with a light source, a printed version of the surveillance camera monitor is attached or embedded into the wall of a room. People outside cannot see inside because there is no window there, but for people inside, the printed version has the appearance of wallpaper, and by displaying outdoor images captured by the camera depending on their mood, it becomes a "(pseudo) window" and allows them to see the outdoor scenery clearly. This allows any place that previously had no window to become a window depending on their mood, expanding the range of room design. Although there are few windows in rooms other than corner apartments, creating a pseudo window anywhere eliminates the feeling of being closed in and creates a sense of openness.

[0020] [Example 1-1] FIG. 1 is a cross-sectional view schematically showing a display device according to Example 1-1. FIG. 2 is a cross-sectional view schematically showing a picture-printed layer included in the display device shown in FIG. 1. As shown in FIG. 1, the display device 1 includes a printed material 2 and a light source 3. The printed material 2 is a sheet for expressing a picture, and includes a light-transmitting substrate 4, a picture-printed layer 5, and a transparent smoke-printed layer 30. The printed material 2 is provided in front of the light source 3 (between the viewer and the light source 3). The printed material 2 is fully light-transmitting. Therefore, when the light source 3 is powered on, the viewer can see the light from the light source 3 that has passed through the printed material 2, and when the light source 3 is powered off, the viewer can see the picture expressed by the printed material 2. The light source 3 is, for example, a display device.

[0021] The light-transmitting substrate 4 is a substrate that is transparent to visible light. The light-transmitting substrate 4 is made of, for example, a transparent resin. Examples of transparent resins include PET, PMMA, polycarbonate, polyethylene, polypropylene, and nylon. The light-transmitting substrate 4 may be a glass substrate. The thickness of the light-transmitting substrate 4 is, for example, 25 μm to 250 μm, but as long as printing is possible, a substrate having a thickness less than or greater than this range can also be used. In the case of a glass substrate, the thickness is, for example, about several mm to 10 mm. If necessary, a surface protection layer may be provided on the surface side of the light-transmitting substrate 4 (the side opposite to the picture-printed layer 5).

[0022] The picture-printed layer 5 is a layer that expresses the picture of the printed matter 2. The picture-printed layer 5 includes a first color pattern layer 10 provided on one surface 4a of the light-transmitting substrate 4, and a second color pattern layer 20 provided on the first color pattern layer 10.

[0023] The first color pattern layer 10 can be formed on the surface 4a by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 2, the first color pattern layer 10 is composed of a plurality of first color dots 11. Here, "dot" refers to a point that is an element constituting a printed image, and its shape is not limited to a circle but may be a rectangle, a polygon, or other shape. Each of the plurality of first color dots 11 contains a first color binder 12 and a plurality of first color pigment chips 13 dispersed within the first color binder 12. The content of the plurality of first color pigment chips 13 is, for example, in the range of 0.5 parts by weight to 20 parts by weight, where the first color binder 12 is 100 parts by weight.

[0024] Examples of the first color binder 12 include vinyl resins, acrylic resins, thermoplastic urethane resins, polyester resins, and polycarbonate resins. The thickness of the first color pattern layer 10 is, for example, 1 μm to 10 μm. The first color pattern layer 10 may contain a curing agent. In this case, the heat resistance of the first color pattern layer 10 and the adhesion of the first color pattern layer 10 to the light-transmitting substrate 4 can be improved. The first color pattern layer 10 may also contain a weathering agent. Known ultraviolet absorbers and light stabilizers can be used as the weathering agent.

[0025] In Example 1-1, the multiple first color pigment chips 13 are multiple color first interference pigments 14a, 14b that generate different interference light from each other. Each of the first interference pigments 14a, 14b is composed of a thin flake (not shown) that is transparent to visible light and a metal oxide film (not shown) that covers the flake. Light incident on the first color pattern layer 10 from the translucent substrate 4 side and reflected from the surface of the metal oxide film interferes with light that passes through the metal oxide film and is reflected from the surface of the flakes, generating interference light. Adjusting the film thickness and refractive index of the metal oxide film allows for generation of interference light with a desired wavelength.

[0026] In Example 1-1, each of the first interference pigments 14a and 14b is titanium dioxide-coated mica. The particle size range of the titanium dioxide-coated mica includes, for example, a range of 25 μm to 60 μm. Here, "particle size" refers to the longest diameter of the particle cross section. The flakes that make up the first interference pigments 14a and 14b may be made of materials other than mica, such as silica, alumina, glass, or polysilicate. The metal oxide films that make up the first interference pigments 14a and 14b may be made of materials other than titanium dioxide, such as zirconium oxide, zinc oxide, iron oxide, or tin oxide.

[0027] When incident light E enters the first color pattern layer 10, the first interference pigments 14a and 14b generate first interference light beams 15a and 15b, which are different from each other. That is, the wavelengths of the first interference light beams 15a and 15b are different from each other. As a result, the first interference pigments 14a and 14b exhibit a mixed color. The first interference pigments 14a and 14b are, for example, a red interference pigment (red pearl pigment) and a gold interference pigment (gold pearl pigment), respectively. In this case, the first interference light beams 15a and 15b exhibit red and gold, respectively. The blending amounts of the first interference pigments 14a and 14b may be the same or different from each other.

[0028] The second color pattern layer 20 can be formed on the first color pattern layer 10 by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 2, the second color pattern layer 20 is composed of a plurality of second color dots 21. Here, "dot" refers to a point that is an element constituting a printed image, and its shape is not limited to a circle but may be a rectangle, a polygon, or other shape. Each of the plurality of second color dots 21 contains a second color binder 22 and a plurality of second color pigment chips 23 dispersed within the second color binder 22. The content of the plurality of second color pigment chips 23 is, for example, in the range of 0.5 parts by weight to 20 parts by weight, where the second color binder 22 is 100 parts by weight.

[0029] Examples of the second color binder 22 include vinyl resins, acrylic resins, thermoplastic urethane resins, polyester resins, and polycarbonate resins. The thickness of the second color pattern layer 20 is, for example, 1 μm to 10 μm. The second color pattern layer 20 may contain a curing agent. In this case, the heat resistance of the second color pattern layer 20 and the adhesion of the second color pattern layer 20 to the first color pattern layer 10 can be improved. The second color pattern layer 20 may also contain a weathering agent. Known ultraviolet absorbers and light stabilizers can be used as the weathering agent.

[0030] In Example 1-1, the multiple second color pigment chips 23 are second interference pigments 24 that generate monochromatic interference light different from the mixed color of the first interference pigments 14a and 14b. The second interference pigment 24 is composed of flakes (not shown) that are transparent to visible light and a metal oxide film (not shown) that covers the flakes. Light incident on the second color pattern layer 20 from the translucent substrate 4 side is reflected by the surface of the metal oxide film, and light that passes through the metal oxide film and is reflected by the surface of the flakes interferes with each other to generate interference light. Adjusting the film thickness and refractive index of the metal oxide film allows for the generation of interference light with a desired wavelength.

[0031] In Example 1-1, the second interference pigment 24 is titanium dioxide-coated mica. The particle size range of the titanium dioxide-coated mica includes, for example, a range of 25 μm to 60 μm. Here, "particle size" refers to the longest diameter of the particle cross section. The flakes that make up the second interference pigment 24 may be made of a material other than mica, such as silica, alumina, glass, or polysilicate. The metal oxide film that makes up the second interference pigment 24 may be made of a material other than titanium dioxide, such as zirconium oxide, zinc oxide, iron oxide, or tin oxide.

[0032] When incident light E enters the second color pattern layer 20, the second interference pigment 24 generates a monochromatic second interference light 25. As a result, the second interference pigment 24 exhibits a monochromatic color. The second interference pigment 24 may be any interference pigment that generates a monochromatic second interference light 25 different from the mixed color exhibited by the first interference pigments 14a and 14b, and may be, for example, a green interference pigment (green pearl pigment). In this case, the second interference light 25 exhibits green color.

[0033] The transparent smoke printed layer 30 has the function of attenuating light from the front side of the viewpoint that passes through the printed matter 2. The transparent smoke printed layer 30 is provided on the outermost surface of the picture printed layer 5, opposite the light-transmitting substrate 4. In Example 1-1, the transparent smoke printed layer 30 is provided on the second color pattern layer 20, as shown in FIG. 1. The transparent smoke printed layer 30 can be provided on the second color pattern layer 20 by, for example, screen printing, inkjet printing, gravure printing, or offset printing using an ink in which a small amount of carbon black is dispersed in a resin binder such as a vinyl, acrylic, urethane, or polyester binder. The thickness of the transparent smoke printed layer 30 is, for example, 1 μm to 10 μm. The transparent smoke printed layer 30 may contain a curing agent. In this case, the heat resistance of the transparent smoke printed layer 30 and the adhesion of the transparent smoke printed layer 30 to the second color pattern layer 20 can be improved. Furthermore, a weatherproofing agent may be contained in the transparent smoke printed layer 30. As the weatherproofing agent, known ultraviolet absorbers and light stabilizers can be used.

[0034] In the printed matter 2, the image is expressed by additively mixing the first interference light 15a, 15b generated by the first interference pigments 14a, 14b and the second interference light 25 generated by the second interference pigment 24.

[0035] The total light transmittance of the printed matter 2 is, for example, 30% to 70%. The total light transmittance here refers to a value measured using a spectrophotometer (for example, spectrophotometer UV-2100 manufactured by Shimadzu Corporation).

[0036] In the printed matter 2 according to Example 1-1 described above, the first color pattern layer 10 contains the first interference pigments 14a and 14b, and the second color pattern layer 20 contains the second interference pigment 24, making it possible to achieve a three-dimensional image even with a small number of printed layers. Furthermore, in the printed matter 2, the first color pattern layer 10 is the only pattern layer of the first color pattern layer 10 and the second color pattern layer 20 that contains an interference pigment that generates different interference light from each other, making it possible to simplify color matching and registration work during printing. Therefore, the printed matter 2 makes it possible to achieve a three-dimensional image even with a small number of printed layers, and also simplifies color matching and registration work during printing.

[0037] In Example 1-1, the printed matter 2 includes a transparent smoke print layer 30 provided on the second color pattern layer 20. This provides better color development between the first color pattern layer 10 and the second color pattern layer 20. Furthermore, because the transparent smoke print layer 30 is transparent, a decrease in the visibility of the image on the display device 1 is effectively suppressed.

[0038] In Example 1-1, each of the first interference pigments 14a, 14b and the second interference pigment 24 contains titanium dioxide-coated mica with a particle size of 25 μm or more and 60 μm or less. When titanium dioxide-coated mica with a particle size of 25 μm or more is contained, the transparency and color development of the picture-printed layer 5 can be improved. When titanium dioxide-coated mica with a particle size of 60 μm or less is contained, a decrease in the resolution and gradation of the picture-printed layer 5 can be suppressed.

[0039] In Example 1-1, the content of the multiple first color pigment chips 13 is within a range of 0.5 parts by weight or more and 20 parts by weight or less, when the first color binder 12 is taken as 100 parts by weight, and the content of the multiple second color pigment chips 23 is within a range of 0.5 parts by weight or more and 20 parts by weight or less, when the second color binder is taken as 100 parts by weight. Because the content of the multiple first color pigment chips 13 is within a range of 0.5 parts by weight or more, the pattern of the first color pattern layer 10 is well expressed. Because the content of the multiple first color pigment chips 13 is within a range of 20 parts by weight or less, deterioration in the coating properties and transparency of the first color pattern layer 10 can be suppressed. Similarly, since the content of the multiple second color pigment chips 23 is within the range of 0.5 parts by weight to 20 parts by weight when the second color binder 22 is 100 parts by weight, the pattern of the second color pattern layer 20 is well expressed while preventing a decrease in the coating properties and transparency of the second color pattern layer 20.

[0040] In Example 1-1, the total light transmittance of the printed matter 2 is 30% to 70%. If the total light transmittance is 30% or more, when the printed matter 2 is placed in front of a screen, the light from the image on the screen makes it difficult to see the picture printed layer 5, and the image is more clearly visible. If the total light transmittance is 70% or less, the picture in the picture printed layer 5 can be prevented from appearing dark even when the screen is black.

[0041] In Example 1-1, the display device 1 includes a printed matter 2 and a light source 3. With the display device 1, when the light source 3 is not lit, the pattern on the pattern printed layer 5 is visible, and when the light source 3 is lit, the transmitted light from the light source 3 (pattern display, video display, etc.) is visible.

[0042] In Example 1-1, the light source 3 may be a display device. In this case, when the display is not lit, the pattern on the pattern-printed layer 5 is visible, and when the display is lit, transmitted light from the display (pattern display, video display, etc.) is visible.

[0043] As described above, the multiple interference pigments 14a, 14b, and 24 may contain pearl pigments. That is, the picture-printed layer 5 may contain multiple interference pearl pigments (interference pigments 14a, 14b, and 24) that are different from one another. Therefore, the printed matter 2 is a printed matter 2 that includes a translucent substrate 4 and a picture-printed layer 5, and the picture-printed layer 5 may contain multiple interference pearl pigments. This allows the picture-printed layer 5 to achieve a three-dimensional appearance.

[0044] The picture-printed layer 5 may include a first color pattern layer 10 containing an interference pearl pigment and a second color pattern layer 20 containing an interference pearl pigment, thereby allowing the picture-printed layer 5 to have a more three-dimensional appearance.

[0045] Each of the first color pattern layer 10 and the second color pattern layer 20 may contain a plurality of interference pearl pigments, thereby enabling the picture printed layer 5 to have a more three-dimensional appearance. For example, the second color pattern layer 20 may contain other interference pearl pigments in addition to the interference pigment 24.

[0046] The particle diameters of the plurality of interference pearl pigments may be different from one another. By including interference pearl pigments of different particle diameters in this way, a decrease in the transparency of the picture-printed layer 5 is suppressed.

[0047] The particle diameter of the plurality of interference pearl pigments may be 25 μm or more and 60 μm or less. In this case, the color development of the pattern of the pattern-printed layer 5 can be improved. Furthermore, by suppressing an unnecessary decrease in the transparency of the pattern-printed layer 5, the visibility of the image on the display device can be improved when the display device is used.

[0048] The interference pearl pigment may contain titanium dioxide-coated mica. In this case, the wavelength of the interference light can be adjusted by adjusting the thickness of the titanium dioxide film. Furthermore, by increasing the smoothness of the mica surface, the brightness can be improved.

[0049] The effect of the picture-printed layer 5 containing a plurality of interference pearl pigments can be obtained not only in the first example, but also in the second to sixth examples described later.

[0050] [Example 1-2] Below, a printed matter 2A according to Example 1-2 will be described with reference to Figures 3 and 4. Note that in the description of Example 1-2, descriptions that overlap with Example 1-1 above will be omitted, and only differences from Example 1-1 above will be described. In other words, to the extent technically possible, descriptions from Example 1-1 above may be used appropriately in Example 1-2.

[0051] Fig. 3 is a cross-sectional view schematically showing a printed matter according to Example 1-2. Fig. 4 is a cross-sectional view schematically showing a white pattern layer provided in the printed matter shown in Fig. 3. The printed matter 2A includes a light-transmitting substrate 4 and a picture printed layer 5. The printed matter 2A further includes a white pattern layer 40 provided on the second color pattern layer 20.

[0052] The white pattern layer 40 can be formed on the second color pattern layer 20 by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 4 , the white pattern layer 40 is composed of a plurality of silver dots 41. Here, "dot" refers to a point that is an element constituting a printed image, and its shape is not limited to a circle, but may be a rectangle, a polygon, or other shape. Each of the plurality of silver dots 41 contains a silver binder 42 and a plurality of silver pigment chips 43 dispersed within the silver binder 42. The content of the plurality of silver pigment chips 43 is, for example, in the range of 0.5 parts by weight to 20 parts by weight, where the silver binder 42 is 100 parts by weight.

[0053] Examples of the silver binder 42 include vinyl resins, acrylic resins, thermoplastic urethane resins, polyester resins, and polycarbonate resins. The thickness of the white pattern layer 40 is, for example, 1 μm to 10 μm. The white pattern layer 40 may contain a curing agent. In this case, the heat resistance of the white pattern layer 40 and the adhesion of the white pattern layer 40 to the second color pattern layer 20 can be improved. The white pattern layer 40 may also contain a weathering agent. Known ultraviolet absorbers and light stabilizers can be used as the weathering agent.

[0054] The configuration of the printed matter 2A described above also achieves the same effects as in Example 1-1 above. Furthermore, Example 1-2 includes a white pattern layer 40 formed on the second color pattern layer 20 and composed of a plurality of silver dots 41, each of which contains a silver binder 42 and a plurality of silver pigment chips 43 dispersed within the silver binder 42. This provides excellent color development for the first color pattern layer 10 and the second color pattern layer 20, and allows the picture printed layer 5 to have a pattern that gives a whitish impression.

[0055] [Example 1-3] Below, a printed matter 2B according to Example 1-3 will be described with reference to Figure 5. Note that in the description of Example 1-3, descriptions that overlap with Examples 1-1 and 1-2 above will be omitted, and only differences from Examples 1-1 and 1-2 above will be described. In other words, to the extent technically possible, descriptions from Examples 1-1 and 1-2 above may be used appropriately in Example 1-3.

[0056] 5 is a cross-sectional view schematically showing a printed matter according to Example 1-3. The printed matter 2B comprises a light-transmitting substrate 4 and a picture print layer 5. That is, the printed matter 2B does not comprise a translucent smoke print layer 30 or a white pattern layer 40. Even with the configuration of the printed matter 2B described above, the same effects as those of Example 1-1 can be achieved.

[0057] [Example 1-4] Below, a printed matter 2C according to Example 1-4 will be described with reference to Figure 6. Note that in the description of Example 1-4, descriptions that overlap with Examples 1-1, 1-2, and 1-3 above will be omitted, and only differences from Examples 1-1, 1-2, and 1-3 above will be described. In other words, to the extent technically possible, descriptions from Examples 1-1, 1-2, and 1-3 above may be used appropriately in Example 1-4.

[0058] 6 is a cross-sectional view schematically showing a printed matter according to Example 1-4. The printed matter 2C comprises a light-transmitting substrate 4, a picture print layer 5, a white pattern layer 40, and a transmissive smoke print layer 30. The white pattern layer 40 is provided on the second color pattern layer 20, and the transmissive smoke print layer 30 is provided on the white pattern layer 40. The configuration of the printed matter 2C described above also achieves the same effects as those of Examples 1-1, 1-2, and 1-3.

[0059] The display device and printed matter according to the present disclosure are not limited to the above-described examples, and various other modifications are possible. For example, the second color pattern layer may include first interference pigments of multiple colors that generate different first interference lights, and the first color pattern layer may include a second interference pigment that generates a single-color second interference light that is different from the mixed color exhibited by the multiple first interference pigments. Furthermore, while the above examples show that the first color pigment chips are first interference pigments of two colors, the first color pigment chips may be first interference pigments of three or more colors.

[0060] [Second example] [Example 2-1] The printed matter and display device according to this example may have the same configuration as that shown in Fig. 1. Therefore, in the printed matter and display device according to this example, the description of the same configuration as that of the printed matter and display device of Example 1-1 will be omitted. The printed matter and display device according to Example 2-1 adopt the layer configuration shown in Fig. 7 instead of the layer configuration shown in Fig. 2.

[0061] The first interference pigment 14a includes a plurality of first titanium dioxide-coated micas 18a of a small particle size grade having a particle size range of 5 μm to 25 μm and a second titanium dioxide-coated mica 18b of a large particle size grade having a particle size range of 25 μm to 40 μm. The first interference pigment 14b includes a plurality of first titanium dioxide-coated micas 16a of a small particle size grade having a particle size range of 5 μm to 25 μm and a plurality of second titanium dioxide-coated micas 16b of a large particle size grade having a particle size range of 25 μm to 40 μm. The first titanium dioxide-coated micas 18a, 16a have an average particle size (D50) of, for example, about 15 μm, and the second titanium dioxide-coated micas 18b, 16b have an average particle size (D50) of, for example, about 25 μm. As a result, the average particle size of the first titanium dioxide-coated mica 18a, 16a is smaller than the average particle size of the second titanium dioxide-coated mica 18b, 16b. The second titanium dioxide-coated mica 18b, 16b may have a particle size range of 25 μm to 60 μm. In this case, the average particle size (D50) of the second titanium dioxide-coated mica 18b, 16b is, for example, approximately 35 μm. As shown in FIG. 7, each of the multiple first titanium dioxide-coated mica 18a, 16a is arranged so as to fill the gaps between the multiple second titanium dioxide-coated mica 18b, 16b. Here, "particle size" refers to the longest diameter of the particle cross section.

[0062] When incident light L enters the first color pattern layer 10, the first interference pigments 14a and 14b generate first interference lights 17a and 17b, which are different from each other. That is, the wavelengths of the first interference lights 17a and 17b are different from each other. As a result, the first interference pigments 14a and 14b exhibit a mixed color. The first interference pigments 14a and 14b may be, for example, a red interference pigment (red pearl pigment) and a gold interference pigment (gold pearl pigment), respectively. In this case, the first interference lights 17a and 17b exhibit red and gold, respectively. The first interference pigments 14a and 14b may be interference pigments of other colors. The blending amounts of the first interference pigments 14a and 14b may be the same or different from each other.

[0063] The second color pattern layer 20 may be the same as that shown in the first example.

[0064] The second interference pigment 24 includes a plurality of first titanium dioxide-coated micas 25a of a small particle size grade including a particle size range of 5 μm to 25 μm and a second titanium dioxide-coated mica 25b of a large particle size grade including a particle size range of 25 μm to 40 μm. The first titanium dioxide-coated micas 25a have an average particle size (D50) of, for example, about 15 μm, and the second titanium dioxide-coated micas 25b have an average particle size (D50) of, for example, about 25 μm. Thus, the average particle size of the first titanium dioxide-coated micas 25a is smaller than the average particle size of the second titanium dioxide-coated micas 25b. The second titanium dioxide-coated micas 25b may have a particle size range of 25 μm to 60 μm. In this case, the average particle size (D50) of the second titanium dioxide-coated micas 25b is, for example, about 35 μm. The plurality of first titanium dioxide-coated mica particles 25a are arranged so as to fill the gaps between the plurality of second titanium dioxide-coated mica particles 25b. Here, the "particle size" means the longest diameter of the particle cross section.

[0065] When incident light L enters the second color pattern layer 20, the second interference pigment 24 generates a single-color second interference light 26. As a result, the second interference pigment 24 exhibits a single color. The second interference pigment 24 may be any interference pigment that generates a single-color second interference light 26 different from the mixed color exhibited by the first interference pigments 14a and 14b, and may be, for example, a green interference pigment (green pearl pigment). In this case, the second interference light 26 exhibits green. The second interference pigment 24 may be an interference pigment of a color other than green.

[0066] The transparent smoke printed layer 30 is a layer for attenuating light transmitted through the printed matter 2. The transparent smoke printed layer 30 is provided on the outermost surface of the picture printed layer 5, opposite the light-transmitting substrate 4. In Example 2-1, the transparent smoke printed layer 30 is provided on the second color pattern layer 20, as shown in FIG. 1. The transparent smoke printed layer 30 can be provided on the second color pattern layer 20 by, for example, screen printing, inkjet printing, gravure printing, or offset printing using an ink in which a small amount of carbon black is dispersed in a resin binder such as a vinyl, acrylic, urethane, or polyester binder. The thickness of the transparent smoke printed layer 30 is, for example, 1 μm to 10 μm. The transparent smoke printed layer 30 may contain a curing agent. In this case, the heat resistance of the transparent smoke printed layer 30 and the adhesion of the transparent smoke printed layer 30 to the second color pattern layer 20 can be improved. Furthermore, a weatherproofing agent may be contained in the transparent smoke printed layer 30. As the weatherproofing agent, known ultraviolet absorbers and light stabilizers can be used.

[0067] In the printed matter 2, the image is expressed by additively mixing the first interference light 17a, 17b generated by the first interference pigments 14a, 14b and the second interference light 26 generated by the second interference pigment 24.

[0068] The total light transmittance of the printed matter 2 is, for example, 30% to 70%. The total light transmittance here refers to a value measured using a spectrophotometer (for example, spectrophotometer UV-2100 manufactured by Shimadzu Corporation).

[0069] In the printed matter 2 according to Example 2-1 described above, in the first color pattern layer 10, each of the plurality of first titanium dioxide-coated micas 18a, 16a having a small particle size range of 5 μm to 25 μm is arranged to fill the gaps between the plurality of second titanium dioxide-coated micas 18b, 16b having a large particle size range of 25 μm to 40 μm. In the printed matter 2, in the second color pattern layer 20, each of the plurality of first titanium dioxide-coated micas 25a having a small particle size range of 5 μm to 25 μm is arranged to fill the gaps between the plurality of second titanium dioxide-coated micas 25b having a large particle size range of 25 μm to 40 μm. Therefore, the printed matter 2 can provide a pattern with excellent visibility and color development. Furthermore, in the printed matter 2, the first color pattern layer 10 contains large particle size grade second titanium dioxide-coated mica 18b, 16b, and the second color pattern layer 20 contains large particle size grade second titanium dioxide-coated mica 25b, thereby suppressing a decrease in the transparency of the picture printed layer 5. Therefore, according to the printed matter 2, a decrease in the visibility of the image on the display device is effectively suppressed when the power is on.

[0070] In Example 2-1, the large particle size grade second titanium dioxide-coated mica 18b, 16b, 25b may have a particle size range of 25 μm to 60 μm. In this case, the color development of the pattern is more excellent. Furthermore, by suppressing an unnecessary decrease in the transparency of the pattern-printed layer 5, the visibility of the image on the display device 1 can be improved when used in the display device.

[0071] In Example 2-1, the first interference pigments 14a, 14b, and the second interference pigment 24 are interference pigments containing titanium dioxide-coated mica. Therefore, by adjusting the thickness of the titanium dioxide film, the wavelength of the interference light can be adjusted. Furthermore, by increasing the smoothness of the mica surface, the perceived brightness can be improved.

[0072] In the second example, the configurations according to Examples 1-2 to 1-4 in the first example may also be adopted.

[0073] In the above examples, the first interference pigment and the second interference pigment each contained a plurality of first titanium dioxide-coated micas and a plurality of second titanium dioxide-coated micas. However, it is sufficient that at least one of the first interference pigment and the second interference pigment contains a plurality of first titanium dioxide-coated micas and a plurality of second titanium dioxide-coated micas. Furthermore, in the above examples, the first color pigment chips were first interference pigments of two colors. However, the first color pigment chips may be first interference pigments of three or more colors. Furthermore, first interference pigments of multiple colors may be mixed.

[0074] [Experimental Example] Here, experimental examples will be used to explain the tendency of the appearance of images and patterns on LCD monitors depending on the particle size of the titanium dioxide-coated mica contained in the pattern print layer. As shown in FIG. 8 and Experimental Examples 1 to 3 described below, printed matter was produced with the particle size of the titanium dioxide-coated mica adjusted. FIG. 8 is a diagram showing the configuration of the printed matter according to Experimental Examples 1 to 3. An LCD monitor was placed on the back side (transparent smoke printed layer side) of the printed matter according to Experimental Examples 1 to 3. The distance between the printed matter and the LCD monitor was 2 mm. The visibility (items 1 to 4 described below) of the LCD monitor when it was turned on and off was evaluated. Sensory evaluation was conducted by four people for items 1 to 4, and the average score was calculated.

[0075] <Experimental Example 1> A printed material was produced by sequentially providing a first-color pattern layer, a second-color pattern layer, a white pattern layer, and a transparent smoke print layer on a transparent PET substrate. In Experimental Example 1, the first-color pattern layer was formed by screen printing using an ink containing a first-color binder (urethane resin) and red and gold interference pigments dispersed within the first-color binder. The red and gold interference pigment contents were as follows, per 100 parts by weight of the first-color binder: 8 parts by weight of a red interference pigment having a particle size of 10 to 40 μm, 2 parts by weight of a red interference pigment having a particle size of 5 to 25 μm, 5 parts by weight of a gold interference pigment having a particle size of 10 to 60 μm, and 2 parts by weight of a gold interference pigment having a particle size of 5 to 25 μm.

[0076] In Experimental Example 1, a second color pattern layer was formed by screen printing using an ink containing a second color binder (urethane resin) and a green interference pigment dispersed within the second color binder. The green interference pigment content was 4 parts by weight of a green interference pigment with a particle size of 10 to 40 μm and 1 part by weight of a green interference pigment with a particle size of 5 to 25 μm, relative to 100 parts by weight of the second color binder. The red interference pigment, gold interference pigment, and green interference pigment were all titanium dioxide-coated mica.

[0077] In Experimental Example 1, a white pattern layer was formed by screen printing using an ink containing a silver binder (urethane resin) and silver pigment chips dispersed within the silver binder. The silver pigment chip content was 1 part by weight of silver pigment chips with particle sizes of 5 to 25 μm per 100 parts by weight of the silver binder. Furthermore, a transparent smoke print layer was formed by screen printing using an ink containing a medium ink and a black ink in a ratio of 40:1.

[0078] <Experimental Example 2> A printed material was produced by sequentially depositing a first-color pattern layer, a second-color pattern layer, a white pattern layer, and a transparent smoke print layer on a transparent PET substrate. In Experimental Example 2, the first-color pattern layer was formed by screen printing using an ink containing a first-color binder (urethane resin) and red and gold interference pigments dispersed within the first-color binder. The red and gold interference pigment contents were as follows, per 100 parts by weight of the first-color binder: 8 parts by weight of a red interference pigment having a particle size of 10 to 40 μm, 2 parts by weight of a red interference pigment having a particle size of 5 to 25 μm, 5 parts by weight of a gold interference pigment having a particle size of 10 to 60 μm, and 2 parts by weight of a gold interference pigment having a particle size of 5 to 25 μm.

[0079] In Experimental Example 2, a second color pattern layer was formed by screen printing using an ink containing a second color binder (urethane resin) and a green interference pigment dispersed within the second color binder. The content of the green interference pigment was 4 parts by weight, with a particle size of 10 to 40 μm, for every 100 parts by weight of the second color binder. The red interference pigment, gold interference pigment, and green interference pigment were all titanium dioxide-coated mica.

[0080] In Experimental Example 2, a white pattern layer was formed by screen printing using an ink containing a silver binder (urethane resin) and silver pigment chips dispersed within the silver binder. The silver pigment chip content was 1 part by weight of silver pigment chips with particle sizes of 5 to 25 μm per 100 parts by weight of the silver binder. Furthermore, a transparent smoke print layer was formed by screen printing using an ink containing a medium ink and a black ink in a ratio of 40:1.

[0081] <Experimental Example 3> A printed material was produced by sequentially depositing a first color pattern layer, a second color pattern layer, and a transparent smoke print layer on a transparent PET substrate. In Experimental Example 3, the first color pattern layer was formed by screen printing using an ink containing a first color binder (urethane resin) and a green interference pigment dispersed within the first color binder. The green interference pigment content was 4 parts by weight of a green interference pigment having a particle size of 10 to 40 μm and 1 part by weight of a green interference pigment having a particle size of 5 to 25 μm, relative to 100 parts by weight of the first color binder.

[0082] In Experimental Example 3, a second color pattern layer was formed by screen printing using an ink containing a second color binder (urethane resin) and red and gold interference pigments dispersed within the second color binder. The red and gold interference pigment contents were 8 parts by weight of red interference pigment with a particle size of 10 to 40 μm and 5 parts by weight of gold interference pigment with a particle size of 10 to 60 μm, relative to 100 parts by weight of the second color binder.

[0083] In Experimental Example 3, a transparent smoke print layer was formed by screen printing using a mixture of medium ink and black ink in a ratio of 40:1.

[0084] <Item 1: Clarity of displayed content> When the power of the LCD monitor was turned on, the clarity of the images and characters displayed on the LCD monitor was evaluated. <Score> 5 points: The image has little presence compared to the image and text displayed on the LCD monitor, and the image and text appear clear. 3 points: The image is somewhat strong compared to the image and text displayed on the LCD monitor, and the image appears to overlap the image and text slightly. 1 point: The image has a strong presence compared to the image and text displayed on the LCD monitor, and the image appears to overlap the image and text.

[0085] <Item 2: Brightness of the displayed content> When the power supply of the LCD monitor was turned on, the brightness of the images and characters displayed on the LCD monitor was evaluated. <Score> 5 points: Images and text displayed on the LCD monitor appear bright. 3 points: Images and text displayed on the LCD monitor appear slightly dark. 1 point: The image and text displayed on the LCD monitor appear quite dark.

[0086] <Item 3: Effects of black LCD monitors> The influence of the black LCD monitor on the image was evaluated when the LCD monitor was turned off. <Score> 5 points: There is no influence of the black color of the LCD monitor, and the image is clearly visible. 3 points: The influence of the black color of the LCD monitor is slightly noticeable, making the image appear slightly dark and muted (slightly high transparency). 1 point: The influence of the black color of the LCD monitor is evident, making the image appear quite dark and sunken (high transparency).

[0087] <Item 4: Color development of the pattern> The color development of the image was evaluated when the power of the LCD monitor was turned off. <Score> 5 points: The color of the pattern is good. 3 points: The color of the pattern is slightly weak and the color of the pattern appears pale (whitish). 1 point: The color of the pattern is weak and the color of the pattern appears white.

[0088] The results of the sensory evaluation of items 1 to 4 for Experimental Examples 1 to 3 are shown in Table 1 below. Any evaluation of 3 points or higher was deemed acceptable for practical use. Experimental Example 1 showed that the influence of the black LCD monitor on the image was fairly low, and the image visibility tended to be displayed at a sufficiently high level. High evaluation results were also obtained for the color development of the image and the clarity and brightness of the image and text display. Meanwhile, Experimental Examples 2 and 3 showed that the influence of the black LCD monitor on the image was kept low, while the color development of the image and the clarity and brightness of the image and text display tended to be generally good.

[0089] [Table 1]

[0090] [Third example] [Example 3-1] The printed matter and display device according to this example may have the same configuration as that shown in Fig. 1. Therefore, in the printed matter and display device according to this example, the description of the same configuration as that of the printed matter and display device of Example 1-1 will be omitted. The printed matter and display device according to this example employ the layer configuration shown in Fig. 9 instead of the layer configuration shown in Fig. 2.

[0091] The first color pattern layer 10 can be formed on the surface 4a by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 9 , the first color pattern layer 10 is composed of a plurality of first color dots 11. Here, "dot" refers to a point that constitutes a printed image. The shape of the dot is not limited to a circle, and it can be a rectangle, a polygon, or other shape. Each of the plurality of first color dots 11 contains a first color binder 12 and a plurality of first color pigment chips 13 dispersed within the first color binder 12. The content of the plurality of first color pigment chips 13 is, for example, in the range of 0.5 to 20 parts by weight, assuming the first color binder 12 is 100 parts by weight. In this case, the image of the first color pattern layer 10 is well expressed, while the deterioration of the coating property and transparency of the first color pattern layer 10 can be suppressed.

[0092] In Example 3-1, the multiple first color pigment chips 13 are interference pigments 14 (first interference pigments) that generate monochromatic interference light of a predetermined color. The interference pigments 14 are composed of flakes (not shown) that are transparent to visible light and a metal oxide film (not shown) that covers the flakes. Light incident on the first color pattern layer 10 from the translucent substrate 4 side that is reflected on the surface of the metal oxide film interferes with light that passes through the metal oxide film and is reflected on the surface of the flakes, generating interference light. Adjusting the film thickness and refractive index of the metal oxide film allows for the generation of interference light having a desired wavelength.

[0093] When incident light E is incident on the first color pattern layer 10, monochromatic interference light 15 (first interference light) is generated from the interference pigment 14. As a result, the interference pigment 14 exhibits a monochromatic color.

[0094] The second color pattern layer 20 can be formed on the first color pattern layer 10 by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 9 , the second color pattern layer 20 is composed of a plurality of second color dots 21. Here, "dot" refers to a point that constitutes a printed image. The shape of the dot is not limited to a circle, and it may be rectangular, polygonal, or other shapes. Each of the plurality of second color dots 21 contains a second color binder 22 and a plurality of second color pigment chips 23 dispersed within the second color binder 22. The content of the plurality of second color pigment chips 23 is, for example, in the range of 0.5 to 20 parts by weight, assuming the second color binder 22 is 100 parts by weight. This allows the image of the second color pattern layer 20 to be well expressed while preventing a decrease in the coating properties and transparency of the second color pattern layer 20.

[0095] When incident light E is incident on the second color pattern layer 20, the interference pigment 24 (second interference pigment) generates monochromatic interference light 25 (second interference light). As a result, the interference pigment 24 exhibits a monochromatic color. The interference pigment 24 may be any interference pigment that generates monochromatic interference light 25 that is different from the color exhibited by the interference pigment 14.

[0096] The total light transmittance of the printed matter 2 is, for example, 30% to 70%. The total light transmittance here refers to the value measured using a spectrophotometer (for example, a UV-2100 spectrophotometer manufactured by Shimadzu Corporation). If the total light transmittance is 30% or more, when the printed matter 2 is placed in front of a screen, the light from the image on the screen makes it difficult to see the picture printed layer 5, and the image is more clearly visible. If the total light transmittance is 70% or less, the image in the picture printed layer 5 does not appear too dark even when the screen is black.

[0097] Next, the color combinations in the picture-printed layer 5 will be described with reference to Fig. 10 and Fig. 11. Fig. 10(a) is a schematic diagram showing the color combinations of the picture-printed layer 5. Fig. 10(b) is a schematic diagram showing the color combinations of the picture-printed layer 105 according to a comparative example. Fig. 11 is a schematic diagram showing specific examples of color combinations of the picture-printed layer 5.

[0098] As shown in FIG. 10(a), the first color pattern layer 10 contains an interference pigment of a single color "color A," thereby generating interference light of the single color "color A." The second color pattern layer 20 contains an interference pigment of a single color "color B," thereby generating interference light of the single color "color B." Color B is a different color from color A. Therefore, in the printed matter 2, the pattern is expressed by additively mixing the interference light of color A and the interference light of color B.

[0099] In the example shown in FIG. 11(a), "gold" is used as color A of the first color pattern layer 10, and "red" is used as color B of the second color pattern layer 20. The printed matter 2 may express a wood grain pattern as a design by additively mixing gold and red. The gold color of the first color pattern layer 10 can express a light wood grain. In this case, the interference pigment 14 shown in FIG. 9 is, for example, a gold interference pigment (gold pearl pigment). The interference light 15 represents gold. The interference pigment 24 is, for example, a red interference pigment (red pearl pigment). The interference light 25 represents red.

[0100] In the example shown in FIG. 11(b), "red" is used as color A of the first color pattern layer 10, and "gold" is used as color B of the second color pattern layer 20. The printed matter 2 may express a wood grain pattern as a design by additively mixing red and gold. By using red for the first color pattern layer 10, it is possible to express a wood grain pattern with a slightly reddish hue.

[0101] In the example shown in FIG. 11(c), "silver" is used as color A of the first color pattern layer 10, and "gold" is used as color B of the second color pattern layer 20. The printed matter 2 may express a hairline pattern as a design by additively mixing silver and gold. By making the second color pattern layer 20 gold, the usual stainless steel hairline can be adjusted to a gold tone. The interference pigment 14 shown in FIG. 9 is, for example, a silver interference pigment (silver pearl pigment). The interference light 15 indicates silver.

[0102] In the example shown in FIG. 11(d), "silver" is used as color A of the first color pattern layer 10, and "red" is used as color B of the second color pattern layer 20. The printed matter 2 may express a hairline pattern as a design by additively mixing silver and red. By using red for the second color pattern layer 20, the stainless steel hairline can be adjusted to a bronze tone.

[0103] In the example shown in FIG. 11(e), "gold" is used as color A of the first color pattern layer 10, and "silver" is used as color B of the second color pattern layer 20. The printed matter 2 may express a hairline pattern as a design by additively mixing gold and silver. By making the first color pattern layer 10 gold (or a color containing gold), a finish that further emphasizes the gold tone can be achieved.

[0104] In the printed matter 2 according to Example 3-1 described above, the first color pattern layer 10 contains an interference pigment 14 that generates a monochromatic interference light 15, and the second color pattern layer 20 contains an interference pigment 24 that generates a monochromatic interference light 25 that is different in color from the interference pigment 14. Here, as a comparative example, a printed matter 102 is shown in FIG. 10(b), in which the first color pattern layer 10 contains interference pigments of color X and color Y, and the second color pattern layer 20 contains an interference pigment of color Z. For example, to express a pattern such as that described in FIG. 11 using the configuration of the comparative example, it is necessary to adjust the three colors X, Y, and Z, which requires time-consuming color matching and registration during printing. On the other hand, for a pattern that can be expressed with a small number of colors, as in the printed matter 2 according to this example, by limiting the interference pigments contained in the first color pattern layer 10 and the second color pattern layer 20 to a single color, the pattern can be expressed using only the intensity of the single color. In this way, color matching and registration during printing can be simplified. Therefore, this printed matter 2 can simplify color matching and registration work during printing.

[0105] In the third example, the configurations according to Examples 1-2 to 1-4 in the first example may also be adopted.

[0106] [Example 4] [Example 4-1] The printed matter and display device according to this example may have the same configuration as that shown in Fig. 1. Therefore, in the printed matter and display device according to this example, the description of the same configuration as that of the printed matter and display device of Example 1-1 will be omitted. The printed matter and display device according to this example employ the layer configuration shown in Fig. 12 instead of the layer configuration shown in Fig. 2.

[0107] The first color pattern layer 10 can be formed on the surface 4a by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 12, the first color pattern layer 10 is composed of a plurality of first color dots 11. Here, "dot" refers to a point that constitutes a printed image. The shape of the dot is not limited to a circle, and it can be a rectangle, a polygon, or other shape. Each of the plurality of first color dots 11 contains a first color binder 12 and a plurality of first color pigment chips 13 dispersed within the first color binder 12. The content of the plurality of first color pigment chips 13 is, for example, in the range of 0.5 to 20 parts by weight, assuming the first color binder 12 is 100 parts by weight. In this case, the image of the first color pattern layer 10 is well expressed, while the coating property and transparency of the first color pattern layer 10 are prevented from being deteriorated.

[0108] In Example 4-1, the multiple first color pigment chips 13 are interference pigments 14 (second interference pigments) that generate monochromatic interference light of a predetermined color. The interference pigments 14 are the same color as one of the interference pigments 24a and 24b (first interference pigments) described below. The interference pigments 14 are composed of flakes (not shown) that are transparent to visible light and a metal oxide film (not shown) that covers the flakes. Light incident on the first color pattern layer 10 from the translucent substrate 4 side is reflected by the surface of the metal oxide film, and light that passes through the metal oxide film and is reflected by the surface of the flakes interferes with each other to generate interference light. Adjusting the film thickness and refractive index of the metal oxide film allows for the generation of interference light with a desired wavelength.

[0109] When incident light E is incident on the first color pattern layer 10, monochromatic interference light 15 (second interference light) is generated from the interference pigment 14. As a result, the interference pigment 14 exhibits a monochromatic color.

[0110] The second color pattern layer 20 can be formed on the first color pattern layer 10 by, for example, screen printing, inkjet printing, gravure printing, or offset printing. As shown in FIG. 12 , the second color pattern layer 20 is composed of a plurality of second color dots 21. Here, the term "dot" refers to a point that constitutes a printed image. The shape of the dot is not limited to a circle, and it may be rectangular, polygonal, or other shapes. Each of the second color dots 21 contains a second color binder 22 and a plurality of second color pigment chips 23 dispersed within the second color binder 22. The content of the second color pigment chips 23 is, for example, in the range of 0.5 to 20 parts by weight, assuming the second color binder 22 is 100 parts by weight. This allows the image of the second color pattern layer 20 to be well-expressed while preventing a decrease in the coating properties and transparency of the second color pattern layer 20.

[0111] In Example 4-1, the multiple second color pigment chips 23 are interference pigments 24a, 24b of multiple colors that generate different interference light from each other. Each of the interference pigments 24a, 24b is composed of a thin flake (not shown) that is transparent to visible light and a metal oxide film (not shown) that covers the thin flake. Light incident on the second color pattern layer 20 from the translucent substrate 4 side that is reflected on the surface of the metal oxide film interferes with light that passes through the metal oxide film and is reflected on the surface of the flake, generating interference light. Adjusting the film thickness and refractive index of the metal oxide film allows generation of interference light with a desired wavelength.

[0112] In Example 4-1, the interference pigments 24a and 24b are titanium dioxide-coated mica. The particle size range of the titanium dioxide-coated mica includes, for example, a range of 25 μm to 60 μm. Here, "particle size" refers to the longest diameter of the particle cross section. The flakes that make up the interference pigments 24a and 24b may be made of materials other than mica, such as silica, alumina, glass, or polysilicate. The metal oxide films that make up the interference pigments 24a and 24b may be made of materials other than titanium dioxide, such as zirconium oxide, zinc oxide, iron oxide, or tin oxide.

[0113] When incident light E enters the second color pattern layer 20, the interference pigments 24a, 24b generate different interference lights 125a, 125b (first interference lights), respectively. That is, the wavelengths of the interference lights 125a, 125b are different from each other. As a result, the interference pigments 24a, 24b exhibit a mixed color. The blending amounts of the interference pigments 24a, 24b may be the same or different from each other. The interference pigment 24a may be an interference pigment that generates interference light 125a of the same single color as the single color exhibited by the interference pigment 14. Note that the interference pigment 24b may be an interference pigment that generates interference light 126b of the same single color as the single color exhibited by the interference pigment 14.

[0114] The total light transmittance of the printed matter 2 is, for example, 30% to 70%. The total light transmittance here refers to the value measured using a spectrophotometer (for example, a UV-2100 spectrophotometer manufactured by Shimadzu Corporation). If the total light transmittance is 30% or more, when the printed matter 2 is placed in front of a screen, the light from the image on the screen makes it difficult to see the picture printed layer 5, and the image is more clearly visible. If the total light transmittance is 70% or less, the image in the picture printed layer 5 does not appear too dark even when the screen is black.

[0115] Next, the color combinations in the picture-printed layer 5 will be described with reference to Fig. 13 and Fig. 14. Fig. 13(a) and (b) are schematic diagrams showing the color combinations of the picture-printed layer 5. Fig. 13(c) is a schematic diagram showing the color combinations of the picture-printed layer 105 according to a comparative example. Fig. 14 is a schematic diagram showing specific examples of color combinations of the picture-printed layer 5.

[0116] As shown in FIG. 13(a), the first color pattern layer 10 contains an interference pigment of a single color "color A," thereby generating interference light of the single color "color A." The second color pattern layer 20 contains interference pigments of a single color "color A" and a single color "color B," thereby generating interference light of a mixture of "color A" and "color B." Color B is a different color from color A. Therefore, in the printed matter 2, the pattern is expressed by additively mixing the interference light of color A and the interference light of colors A and B.

[0117] Alternatively, as shown in FIG. 13(b), the second color pattern layer 20 contains an interference pigment of a single color "color A," thereby generating interference light of the single color "color A." The first color pattern layer 10 contains interference pigments of a single color "color A" and a single color "color B," thereby generating interference light of a mixture of "color A" and "color B." Color B is a different color from color A. Therefore, in the printed matter 2, the pattern is expressed by additively mixing the interference light of color A and the interference light of colors A and B.

[0118] In the example shown in FIG. 14(a), "gold" is used as color A of the first color pattern layer 10, and "gold" and "red" are used as color A and color B of the second color pattern layer 20, respectively. The printed matter 2 may express a wood grain pattern as a design by additively mixing gold and red. The gold color of the first color pattern layer 10 can express a light wood grain. In this case, the interference pigment 14 and interference pigment 24a shown in FIG. 12 are, for example, gold interference pigments (gold pearl pigments). The interference light 15 and interference light 125a represent gold. The interference pigment 24b is, for example, a red interference pigment (red pearl pigment). The interference light 126b represents red.

[0119] In the example shown in FIG. 14(b), "red" is used as color A of the first color pattern layer 10, and "red" and "gold" are used as color A and color B of the second color pattern layer 20. The printed matter 2 may express a wood grain pattern as a design by additively mixing red and gold. By using red for the first color pattern layer 10, it is possible to express a wood grain pattern with a slightly reddish tint.

[0120] In the example shown in FIG. 14(c), "silver" is used as color A of the first color pattern layer 10, and "silver" and "gold" are used as color A and color B of the second color pattern layer 20, respectively. The printed matter 2 may express a hairline pattern as a design by additively mixing silver and gold. By including gold in the second color pattern layer 20, the usual stainless steel hairline can be adjusted to a gold tone. The interference pigment 14 and interference pigment 24a shown in FIG. 12 are, for example, silver interference pigments (silver pearl pigments). The interference light 15 and interference light 126a indicate silver.

[0121] In the example shown in FIG. 14(d), "silver" is used as color A of the first color pattern layer 10, and "silver" and "red" are used as color A and color B of the second color pattern layer 20. The printed matter 2 may express a hairline pattern as a design by additively mixing silver and red. By including red in the second color pattern layer 20, the stainless steel hairline can be adjusted to a bronze tone.

[0122] In the example shown in FIG. 14(e), "silver" is used as color A and "gold" as color B of the first color pattern layer 10, and "silver" is used as color A of the second color pattern layer 20. The printed matter 2 may express a hairline pattern as a design by additively mixing gold and silver. By including gold (or a color containing gold) in the first color pattern layer 10, a finish that further emphasizes the gold tone can be achieved.

[0123] In the printed matter 2 according to Example 4-1 described above, either the first color pattern layer 10 or the second color pattern layer 20 contains interference pigments of multiple colors that generate interference light of different colors A and B, thereby achieving a three-dimensional image even with a small number of printed layers. Furthermore, in this printed matter 2, only one of the first color pattern layer 10 or the second color pattern layer 20 needs to contain the interference pigment that generates multiple interference light, thereby simplifying color matching and registration during printing. Meanwhile, the other of the first color pattern layer 10 or the second color pattern layer 20 contains an interference pigment that generates interference light of a single color, color A, that is the same as one of the multiple interference pigments. Here, as a comparative example, a printed matter 102 is shown in FIG. 13(c), in which the first color pattern layer 10 contains interference pigments of colors X and Y and the second color pattern layer 20 contains an interference pigment of color Z. For example, when creating a pattern like the one shown in Figure 14 using the comparative example configuration, it is necessary to adjust three colors, X, Y, and Z, which requires a lot of work for color matching and registration during printing. On the other hand, for patterns that can be created with a limited number of colors, such as those shown in Figure 14, the interference pigments in the first color pattern layer 10 and the second color pattern layer 20 can be limited to the same single color A, allowing the pattern to be created by varying the intensity of the single color A. Furthermore, when it is desired to emphasize the color A, using two layers, the first color pattern layer 10 and the second color pattern layer 20, makes it easier to adjust the color than adjusting it using only one color pattern layer. Furthermore, while adding too much interference pigment to one color pattern layer reduces the strength of the coating film, using two color pattern layers 10 and 20 can minimize this decrease in strength. As a result, color matching and registration during printing can be simplified.

[0124] In the fourth example, the configurations according to Examples 1-2 to 1-4 in the first example may also be adopted.

[0125] The printed matter and the display device are not limited to the above-described examples, and various other modifications are possible.

[0126] The printed matter may be a sheet in which a pattern layer and a concealing layer are laminated. The concealing layer is a layer that conceals the color of the display device when an image is not displayed, while transmitting the image when an image is displayed. The concealing layer is set to a predetermined range of visible light transmittance. An opening is formed in the concealing layer. The concealing layer may be printed using an inkjet device, for example, with a white ink containing titanium oxide. Specifically, the concealing layer may be printed, for example, in solid white, on the back of the pattern layer. An example of a printing method is an inkjet device, but is not limited to this. In addition to inkjet printing, various printing methods such as gravure printing, offset printing, letterpress printing, flexographic printing, screen printing, and electrostatic printing may be used to form the concealing layer. The printing method is not limited to the above-mentioned printing methods, and any conventionally known image forming method can be used, such as hand-drawing, ink-flowing, transfer printing, photography, electrophotography, photosensitive resin printing, vacuum deposition, chemical etching, thermal coloring, and discharge breakdown printing. The design layer is formed on the surface of the concealing layer using a printing method and is provided for the purpose of imparting design to the printed matter. The design layer may be applied to the entire surface as long as it has a certain degree of light transparency. Unlike the concealing layer, the design layer does not require the provision of openings, allowing for highly precise designs. Specifically, the design layer can be printed using an inkjet device, and the desired pattern may be printed using four colors of printing ink, for example, cyan, magenta, yellow, and black. Although an inkjet device has been exemplified as a method for printing the design layer, this is not limited thereto, and various printing methods can be applied, as with the concealing layer. The printed matter can adopt any known structure as long as it can exhibit the above-mentioned functions. Although the configuration in which no openings are provided in the design layer has been described, the same function can be achieved by providing openings in the design layer, and this method can also be adopted.

[0127] The concealment and visibility of the printed material 2 will be described in more detail with reference to FIG. 15 . Note that the description based on FIG. 15 is merely an example of a usage mode used to explain the properties of the printed material 2. Therefore, the present invention is not limited to this usage mode. FIGS. 15(a) and 15(b) are views of the front side of a light source 3 covered by the printed material 2. FIG. 15(a) shows the state when the light source 3 is turned off. FIG. 15(b) shows the state when the light source 3 is turned on. A wood grain pattern is used as the design of the printed material 2. A display device is used as the light source 3. The area of ​​the printed material 2 that covers the light source 3 is referred to as the display area DE. As shown in FIG. 15(a), when the light source 3 is turned off, the light source 3 is concealed by the design of the printed material 2. The printed material 2 conceals the light source 3 not with a light-blocking layer that blocks light, but with the light-transmitting design layer itself. Therefore, the visual information V1 displayed in the display area DE is the image of the printed matter 2. At this time, the viewer cannot see the display surface (black screen) of the light source 3 or the outline of the light source 3 from outside the printed matter 2. The visual information V1 visible in the display area DE and the visual information V2 visible in the area surrounding the display area DE are the same image of the printed matter 2. Therefore, the viewer cannot see the existence of the light source 3 from outside the printed matter 2.

[0128] As shown in FIG. 15(b), when the power supply of the light source 3 is ON, the light source 3 emits light and projects an arbitrary image GF onto the display surface. Here, the letter "X" printed on a monochrome background is used as the image GF. In the display area DE, the light of the image GF passes through the printed material 2. As a result, the viewer views the image GF by visually recognizing the transmitted light in the display area DE. Therefore, the visual information V3 displayed in the display area DE is the image GF projected by the light source 3. The content of the visual information V3 may include information not included in the content of the visual information V1. In this case, the visual information V3 may be composed only of light that has passed through the image of the printed material 2.

[0129] For example, as a comparative example, a sheet that displays the visual information "X" using a light source may be provided in which a portion of a light-shielding layer is cut out in the shape of an "X" to form a light-transmitting layer (different from the printed matter 2 of the present embodiment). Visual information V3 obtained using such a sheet and a light source such as a lamp has a background portion formed from a pattern on the surface of the light-shielding layer, and the "X" portion is formed from light from the light source that has passed through the light-transmitting layer. Another comparative example is a sheet in which a light-shielding layer in the shape of an "X" is formed on a portion of the light-transmitting layer. Visual information V3 obtained using such a sheet has a background portion formed from light from the light source that has passed through the light-transmitting layer, and the "X" portion is formed from a pattern on the surface of the light-shielding layer. In the comparative example, visual information V3 is provided by a combination of light that has passed through the sheet and light reflected from the surface of the sheet in the areas where the light is blocked. Furthermore, when a sheet such as the comparative example is used, the "X" shape is formed on the sheet itself in a manner that allows it to be seen even when the light source is turned off, so the visual information V1 also contains the content of "X." Therefore, the content of visual information V3 is already included in visual information V1.

[0130] Unlike a sheet using a light-shielding layer as in the comparative example, the visual information V3 in Fig. 15(b) using the printed matter 2 is entirely composed of light transmitted through the printed matter 2. Note that the entire printed matter 2 shown in Fig. 15 may be composed of a layer forming a light-transmitting pattern, or at least the entire display area DE may be composed of a layer forming a light-transmitting pattern. However, the printed matter 2 may also have a light-shielding layer provided in part of the display area DE, or a light-shielding layer provided in part of an area other than the display area DE.

[0131] Some display devices form a pattern in anticipation of the content of the image from the light source 3, and when the light source 3 is turned on, form visual information V3 by combining the pattern and the image. In the example shown in FIG. 15, the purpose is to make the presence of the light source 3 invisible from the outside, so the visual information V3 in FIG. 15(b) differs from the visual information V3 formed by such a combination. However, depending on the brightness of the image and the color of a certain area, it is acceptable for a faint pattern to be reflected in all or part of the visual information V3. Furthermore, for purposes different from those shown in FIG. 15, a combination of the pattern and the image of the printed material 2 may be used as visual information V3. If a touch panel is used as the light source 3, the user operates the touch panel via the printed material 2. Therefore, the printed material 2 may be set to a thickness, material, and hardness that do not interfere with touch panel operation.

[0132] FIG. 16 is a perspective view showing a window structure 100 according to this embodiment. The window structure 100 is applied to a wall portion of a building. Examples of buildings in which the window structure 100 is used include homes, stores, accommodation facilities, and buildings. As shown in FIG. 16, the window structure 100 includes a wall portion 51, a window frame 52, a light-transmitting member 53, and a printed matter 2.

[0133] The wall 51 is a structure that separates the outside SP1 and the inside SP2 (see FIG. 17) of the building. The wall 51 may be an exterior wall of the building. The wall 51 has an opening, and a window frame 52 is provided around the edge of the opening. A light-transmitting member 53 is provided on the window frame 52. The light-transmitting member 53 is a member that transmits light, and is made of, for example, glass. In this embodiment, the window frame 52 and the light-transmitting member 53 have a rectangular shape with the longitudinal direction in the vertical direction, but the shape is not particularly limited. Furthermore, the opening and closing method of the window is not particularly limited, and the window may be a type that does not open or close.

[0134] Fig. 17 is a cross-sectional view of a window structure 100. As shown in Fig. 17, an exterior SP1 of a building is separated from an interior SP2 by a wall portion 51 and a light-transmitting member 53. The exterior SP1 of the building is bright due to strong sunlight at least during the day. On the other hand, the interior SP2 is darker than the exterior SP1.

[0135] As described above, the printed matter 2 is disposed between the exterior SP1 and the interior SP2. The printed matter 2 is disposed so as to cover the light-transmitting member 53 from the exterior SP1. The printed matter 2 is laminated on the outer surface 53a side of the light-transmitting member 53. The printed matter 2 may be bonded to the outer surface 53a of the light-transmitting member 53 via an adhesive layer or the like.

[0136] 18, the printed matter 2 may be arranged so as to cover the light-transmitting member 53 from the inside SP2. The printed matter 2 is laminated on the inner surface 53b side of the light-transmitting member 53. The printed matter 2 may be bonded to the inner surface 53b of the light-transmitting member 53 via an adhesive layer or the like.

[0137] The printed matter 2 may be one of the examples exemplified above. A pattern is printed on the printed matter 2. Any pattern that can be used as a surface design of the light-transmitting member 53 may be used as the pattern. Patterns that may be used include wood grain patterns, abstract patterns, solid monochrome patterns, illustrations, and the like. The pattern of the printed matter 2 may be the same as the pattern of the wall portion 51. In this case, it becomes difficult to distinguish between the wall portion 51 and the light-transmitting member 53 when viewed from the outside SP1. However, the pattern of the printed matter 2 may be different from the pattern of the wall portion 51.

[0138] As shown in FIG. 19(a), in a front view of the wall 51, the printed matter 2 is arranged to cover the light-transmitting member 53. Here, because the outside SP1 is brighter than the inside SP2, the pattern of the printed matter 2, but not the state of the inside SP2, is visible from the outside SP1. In other words, the pattern of the printed matter 2 conceals the state of the inside SP2 when viewed from the outside SP1. Therefore, as shown in FIG. 19(a), the printed matter 2 conceals the state of the inside SP2 and displays the pattern of the printed matter 2 as visual information. Note that if the printed matter 2 has a pattern similar to that of the outer surface 51a of the surrounding wall 51, it can be difficult to distinguish between the window portion and the wall 51 portion.

[0139] FIG. 19(b) is a diagram showing the outside SP1 as viewed from the inside SP2 of the building. Because the outside SP1 is brighter than the inside SP2, the view from the inside SP2 is equivalent to the situation being lit from the other side of the printed matter 2. The printed matter 2 transmits light from the outside SP1 so that it can be seen from the inside SP2. Visibility means that light is transmitted to an extent that the situation of the outside SP1 can be confirmed from the inside SP2. Therefore, light LT transmitted from the outside SP1 through the printed matter 2 can be seen from the inside SP2 (see FIG. 17). Therefore, a person in the inside SP2 can see the scenery of the outside SP1 at the position of the light-transmitting member 53 as visual information that is different from the inner surface 51b of the surrounding wall portion 51.

[0140] If the interior SP2 of the building is brighter than the exterior SP1, the curtains or the like can be closed.

[0141] Next, the functions and effects of the light-transmitting structure, the window structure 100, and the printed matter 2 according to this embodiment will be described.

[0142] A printed material 2 is disposed on a light-transmitting member 53 provided in a structure. When viewed from the outside of the structure, the printed material 2 conceals the interior of the structure with the image of the printed material 2, and when the inside of the structure is brighter than the outside, the printed material 2 transmits light from the inside of the structure to the outside of the structure so that it can be seen from the outside. When a printed material 2 with such properties is used, the interior of the structure can be concealed from the outside while allowing the outside to be seen from the inside, or the interior can be brightened so that the interior can be seen from the outside. This makes it possible to adjust the visibility depending on the application of the light-transmitting structure.

[0143] In the light-transmitting structure, the structure is a building, the light-transmitting structure is a window structure 100, and the printed matter 2 may transmit light from outside the building into the building so that it can be seen from inside the building, and may conceal the interior of the building with the pattern of the printed matter 2 when seen from outside the building. In this case, people inside the building can clearly see the view outside the building through the window. On the other hand, when seen from outside the building, the printed matter 2 conceals the interior of the building with the pattern of the printed matter 2. Therefore, people outside the building cannot see the interior that is concealed by the pattern of the printed matter 2. This prevents people from looking into the interior from outside the building. As described above, the view outside can be clearly seen from inside the building, and views into the building from outside can be blocked.

[0144] A printed matter 2 is disposed on a light-transmitting member 53 provided on a wall 51 of the building. The printed matter 2 transmits light from the outside SP1 of the building into the inside SP2 of the building so that it can be seen from the inside SP2 of the building. Therefore, people inside the building SP2 can clearly see the scenery outside SP1 of the building through the window. On the other hand, the printed matter 2 conceals the interior SP2 of the building with the image of the printed matter 2 when seen from the outside SP1 of the building. Therefore, people outside SP1 of the building cannot see the interior, which is concealed by the image of the printed matter 2. This prevents people outside SP1 from looking into the interior SP2 of the building. As a result, the scenery outside SP1 can be clearly seen from the inside SP2 of the building, and the view of the interior SP2 from outside SP1 can be blocked.

[0145] The printed matter 2 may be laminated on the outer surface 53a side of the light-transmitting member 53. In this case, the printed matter 2 also conceals the light-transmitting member 53 when viewed from the outside SP1, making it difficult to see the position of the window.

[0146] The printed matter 2 may be laminated on the inner surface 53b side of the light-transmitting member 53. In this case, the printed matter 2 can be prevented from being damaged by wind and rain.

[0147] The printed matter 2 is placed on a light-transmitting member 53 provided on a wall part 51 of the building, and is a printed matter 2 for a window structure 100 on which a pattern is printed, and when viewed from the inside SP2 of the building, it transmits light from the outside SP1 of the building into the inside SP2 of the building so that it can be seen, and when viewed from the outside SP1 of the building, the pattern on the printed matter 2 conceals the state of the inside SP2 of the building.

[0148] The printed matter 2 can provide the same functions and effects as the window structure 100 described above.

[0149] In the above-described embodiment, the light-transmitting structure is a window structure 100 for a building. However, the light-transmitting structure is not limited to the window structure 100 that allows the outside to be seen from the inside. Referring to FIG. 20 , another light-transmitting structure 200 will be described. As shown in FIG. 20 , a structure 61 has a wall 62. The wall 62 is provided with a light-transmitting portion 63. The light-transmitting portion 63 includes the light-transmitting member 53 and the printed matter 2. The structure 61 has a light source 64 in the interior SP2. The light source 64 is provided in the ceiling of the interior SP2, but the location of the light source 64 is not particularly limited and may be provided anywhere as long as it can illuminate the interior SP2 of the structure. When the light source 64 is off, the exterior SP1 is brighter than the interior SP2 (see FIG. 20( a)). When the light source 64 is on, the interior SP2 is brighter than the exterior SP1 (see FIG. 20( b)).

[0150] In the light-transmitting structure 200, when the interior SP2 of the structure 61 is darker than the exterior SP1 of the structure 61, the printed matter 2 conceals the appearance of the interior SP2 of the structure 61 with the pattern of the printed matter 2 when viewed from the exterior SP1 of the structure 61. When the interior SP2 of the structure 61 is brighter than the exterior SP1 of the structure 61, the printed matter 2 transmits light from the interior SP2 of the structure 61 to the exterior SP1 of the structure 61 so that it is visible when viewed from the exterior SP1 of the structure 61. When a printed matter 2 with such properties is used, the appearance of the interior SP2 is concealed from the exterior SP1 of the structure 61, while the interior SP2 is brightened, making it possible to view the appearance of the interior SP2 from the exterior SP1. This makes it possible to adjust the visibility according to the application of the light-transmitting structure 200.

[0151] Furthermore, a light source 64 is provided in the interior SP2 of the structure 61, and when the light source 64 is off, the printed matter 2 conceals the state of the interior SP2 of the structure 61 with the pattern of the printed matter 2 when viewed from the outside SP1 of the structure 61. When the light source 64 is on, the printed matter 2 may transmit light from the interior SP2 of the structure 61 to the outside SP1 of the structure 61 so that it can be seen from the outside SP1 of the structure 61. In this case, when it is necessary to check the interior SP2 of the structure 61, the light source 64 can be turned on, allowing the state of the interior SP2 of the structure 61 to be seen from the outside SP1 of the structure 61. On the other hand, when it is not necessary to check the interior SP2 of the structure 61, the light source 64 can be turned off, allowing the pattern of the printed matter 2 to conceal the interior SP2 when viewed from the outside SP1 of the structure 61.

[0152] Specifically, as shown in FIG. 20(a), when the light source 64 is off, light LT1 from the outside SP1 is reflected as reflected light LT2, which shows the image on the printed matter 2. The inside SP2 is dark because the light source 64 is off, and the light from the inside SP2 is weak and cannot be seen. As a result, a person on the outside SP1 cannot see the inside SP2 of the structure 61, but sees the image created by the reflected light LT2. As shown in FIG. 20(b), when the light source 64 is on, the inside SP2 is bright, and light LT3 from the inside SP2 is stronger than the reflected light LT2 and can be seen. As a result, a person on the outside SP1 can see the state of the inside SP2 of the structure 61 and can use the light LT3 from the inside SP2 at the outside SP1.

[0153] The haze of the combination of the printed material 2 and the light-transmitting member 53 may be 30% or less. In this case, sufficient visibility can be ensured when viewing the interior from the outside with the light source turned on. More preferably, the haze of the combination of the printed material 2 and the light-transmitting member 53 may be 5% or less, or 20% or less. The actual haze value is not particularly limited, but may be 1% or more. Haze is an index related to the transparency of a sheet and represents turbidity (cloudiness). The method for measuring the haze value is not particularly limited, but is measured according to JIS K7136. The haze value may be determined by adjusting the haze of the light-transmitting member 53, adjusting the haze of the printed material 2, or adjusting the haze of both.

[0154] Here, visibility when the haze value is changed by changing the light-transmitting member 53 will be described with reference to FIG. 21 . Here, the light-transmitting structures of Examples 1 to 12 were prepared using the light-transmitting member 53 described under "Light-Transmitting Member" in FIG. 21 . The conditions other than the material of the light-transmitting member 53 were the same for Examples 1 to 12. The conditions other than the material of the light-transmitting member 53 were as follows: XX. The conditions for the printed matter 2 were as follows: XX. First, as shown in FIG. 22(a), a box was prepared with a light source 64 and an observation object OB placed inside. As shown in FIG. 22(b), the opening of the box was covered with the printed matter 2, which was then covered with the light-transmitting member 53. In FIG. 22(b), the light source is off, so the interior of the box cannot be seen, but the pattern on the printed matter 2 can be seen. As shown in FIG. 22(c), the light source was turned on, making the observation object OB inside the box visible. The haze was measured from the light-transmitting member 53 side in the state shown in FIG. 22(c). The measured haze value is shown in the "Haze" section of FIG. 21. Furthermore, for the visibility evaluation, paper with printed characters was placed inside the box, and with the light source 64 on, characters that were readable were marked "Good," while characters that were difficult to read were marked "Poor." The results of the visibility evaluation are shown in the "Visibility" section of FIG. 21. For Examples 8, 9, 10, and 11, the haze was adjusted by the embossing method and the amount of filler added. As shown in FIG. 21, it was confirmed that visibility was improved by reducing the haze to 30% or less.

[0155] Next, a specific example of the light-transmitting structure 200 will be described. For example, as shown in FIG. 23, a washing machine may be used as the structure 61. The washing machine employs a light-transmitting section 63 in the opening and closing section on the front. A light source 64 is provided in the interior SP2 of the washing machine. The laundry in the interior SP2 serves as the object to be observed OB. When the light source 64 is off, the object to be observed OB in the interior SP2 cannot be seen from the outside SP1, but the pattern on the printed matter 2 can be seen (see FIG. 23(a)). When the light source 64 is on, a person in the outside SP1 can visually recognize and confirm the object to be observed OB in the interior SP2 (see FIG. 23(b)).

[0156] For example, as shown in FIG. 24, a microwave oven may be used as the structure 61. The microwave oven has a light-transmitting portion 63 on the front door. A light source 64 is provided inside SP2 of the microwave oven. The object to be heated in the inside SP2 becomes the object to be observed OB. When the light source 64 is off, the object to be observed OB in the inside SP2 cannot be seen from the outside SP1, but the image on the printed matter 2 can be seen (see FIG. 24(a)). When the light source 64 is on, a person outside SP1 can visually confirm the object to be observed OB in the inside SP2 (see FIG. 24(b)).

[0157] For example, as shown in FIG. 25, a refrigerator may be used as the structure 61. A light-transmitting portion 63 is used on the front door of the refrigerator. A light source 64 is provided inside the refrigerator SP2. An item stored in the interior SP2 becomes the observation object OB. When the light source 64 is off, the observation object OB in the interior SP2 cannot be seen from the outside SP1, but the image on the printed matter 2 can be seen (see FIG. 25(a)). When the light source 64 is on, a person on the outside SP1 can visually confirm the observation object OB in the interior SP2 (see FIG. 25(b)). Although the example of a refrigerator has been described, a wine cellar may be used instead of a refrigerator.

[0158] For example, as shown in FIG. 26, a cupboard may be used as the structure 61. The cupboard has a light-transmitting portion 63 on the front door. A light source 64 is provided inside the cupboard SP2. The tableware in the inside SP2 becomes the object of observation OB. When the light source 64 is off, the object of observation OB in the inside SP2 cannot be seen from the outside SP1, but the image on the printed matter 2 can be seen (see FIG. 26(a)). When the light source 64 is on, a person outside SP1 can visually recognize and confirm the object of observation OB in the inside SP2 (see FIG. 26(b)).

[0159] For example, as shown in FIG. 27, a bookshelf may be used as the structure 61. The bookshelf has a light-transmitting portion 63 on the front door. A light source 64 is provided inside the bookshelf SP2. A book in the inside SP2 becomes the object of observation OB. When the light source 64 is off, the object of observation OB in the inside SP2 cannot be seen from the outside SP1, but the image on the printed material 2 can be seen (see FIG. 27(a)). When the light source 64 is on, a person in the outside SP1 can visually recognize and confirm the object of observation OB in the inside SP2 (see FIG. 27(b)).

[0160] For example, as shown in FIG. 28, a ceiling lamp may be used as the structure 61. The ceiling lamp has a light-transmitting portion 63 in the cover. A light source 64 is provided inside the cover, in an interior SP2. When the light source 64 is off, the light from the light source 64 from the interior SP2 cannot be seen from the exterior SP1, but the image on the printed matter 2 can be seen (see FIG. 28(a)). When the light source 64 is on, a person in the exterior SP1 can see the light LT3 from the light source 64 in the interior SP2, and it can be used in the exterior SP1 (see FIG. 28(b)).

[0161] For example, as shown in FIG. 29, a headlight may be used as the structure 61. The headlight has a light-transmitting portion 63 in the cover. A light source 64 is provided inside the cover, in the interior SP2. When the light source 64 is off, the light from the light source 64 from the interior SP2 cannot be seen from the exterior SP1, but the image on the printed matter 2 can be seen (see FIG. 29(a)). When the light source 64 is on, a person in the exterior SP1 can see the light LT3 from the light source 64 in the interior SP2, and it can be used in the exterior SP1 (see FIG. 29(b)).

[0162] The present invention is not limited to the above-described embodiments.

[0163] The manner in which the window structure 100 is provided relative to the installation location is not limited to that shown in Fig. 16 and can be changed as appropriate to include a partition, a skylight, etc. Furthermore, configurations other than those shown in Figs. 23 to 29 may be employed, and light-transmitting structures other than those shown in Figs. 23 to 29 may be employed. [Explanation of symbols]

[0164] 2...printed matter, 51...wall portion, 53...light-transmitting member, 100...window structure, 61...structure, 64...light source, 200...light-transmitting structure.

Claims

1. A light-transmitting structure of a structure having an internal space, a light-transmitting member provided on the structure; a printed matter on which a picture is printed, the printed matter being disposed on the light-transmitting member; When the inside of the structure is darker than the outside, the printed matter conceals the state of the inside of the structure with a pattern on the printed matter when viewed from the outside of the structure, A light-transmitting structure in which, when the inside of the structure is brighter than the outside, the printed matter transmits light from the inside of the structure to the outside of the structure so that it can be seen from the outside of the structure.

2. the structure is a building, and the light-transmitting structure is a window structure; The printed matter is When viewed from inside the building, light from outside the building is transmitted into the building so as to be visible; The light-transmitting structure according to claim 1 , wherein the image on the printed matter conceals the interior of the building when viewed from the outside of the building.

3. A light source is provided inside the structure, When the light source is off, the printed matter conceals the interior of the structure with a pattern on the printed matter when viewed from the outside of the structure; The light-transmitting structure of claim 1 , wherein when the light source is on, the printed matter transmits light from inside the structure to the outside of the structure in a manner that is visible when viewed from outside the structure.

4. The light-transmitting structure according to claim 3 , wherein a haze of the combination of the printed matter and the light-transmitting member is 30% or less.

5. The light-transmitting structure according to claim 1 , wherein the printed matter is laminated on the outer surface side of the light-transmitting member.

6. The light-transmitting structure according to claim 1 , wherein the printed matter is laminated on the inner surface side of the light-transmitting member.

7. a light-transmitting member provided on a wall of the building; a printed matter on which a picture is printed, the printed matter being disposed on the light-transmitting member; The printed matter is When viewed from inside the building, light from outside the building is transmitted into the building so as to be visible; A window structure in which the interior of the building is concealed by the image of the printed matter when viewed from the outside of the building.

8. A printed matter for a window structure, which is placed on a light-transmitting member provided on a wall portion of a building and has a pattern printed thereon, When viewed from inside the building, light from outside the building is transmitted into the building so as to be visible; A printed matter that conceals the state of the interior of the building with a picture on the printed matter when viewed from the outside of the building.

Images