JP2020064116A - Printed matter for display - Google Patents

Abstract

To provide a printed matter for display having a printed image that can easily impress a viewer and give a vivid impression.SOLUTION: A printed matter 1 for display used when retained on a light source panel 10 comprises a first printed image 8a formed on a first ink receptive layer 3a and a second printed image 8b formed on a second ink receptive layer 3b and corresponding to the first printed image. The first printed image is positioned close to the light source panel while the second printed image is positioned far from the light source panel. The thickness T1 of the first ink receptive layer is set to be greater than the thickness T2 of the second ink receptive layer.SELECTED DRAWING: Figure 2

Description

  TECHNICAL FIELD The present invention relates to a printed material for a display which is held and used on a light source panel.

  Conventionally, in a cosmetics section, an internally lit display that emits light from the back surface of a printed matter such as a corton has been widely used. The backlit display has a lot of light and has excellent visibility, so it is easy to get people's attention.

Toppan Forms Co., Ltd., "Confirmed by a brain science experiment on direct mail that" paper is better understood than display "", [online], July 23, 2013, Internet (http: //www.toppan-f) .Co.jp / news / 2013 / 0723.html)

  However, in recent years, researches on the influence of light on the brain have been advanced, and it has become clear that information on an internally lit display is not so impressive to people. More specifically, people will see transmitted light mainly when they see an internally illuminated display, and will receive reflected light when they see an externally illuminated display or a display without illumination. The human brain, particularly the prefrontal cortex, which is an area for understanding information in the brain, has a weaker reaction when information is taken in through transmitted light than when it is taken in through reflected light (see Non-Patent Document 1). Therefore, it is difficult for people to remember the information posted on the interior display.

  Further, in the internally illuminated display, the printed image tends to give a flat and inorganic impression due to the influence of the illumination on the back surface, which promotes the above-mentioned drawbacks.

  Therefore, an object of the present invention is to provide a printed matter for a display having a printed image that easily gives a clear impression to a viewer.

  According to the present invention, in a display printed matter which is held on a light source panel and used, the first printed image applied to the first ink receiving layer and the first printed image applied to the second ink receiving layer and the first printed image And a second print image corresponding to the print image of, the first print image is located on the light source panel side, the second print image is located on the side away from the light source panel, and A printed matter for display is provided in which a thickness T1 of the first ink receiving layer is set to be larger than a thickness T2 of the second ink receiving layer.

The following aspects are preferable in the printed matter for display of the present invention.
(1) The ratio (T1 / T2) between the thickness T2 of the first ink receiving layer and the thickness T2 of the first ink receiving layer is in the range of 1.5 to 7.
(2) The thickness T1 of the first ink receiving layer is in the range of 25 to 55 μm, and the thickness T2 of the second ink receiving layer is in the range of 5 to 23 μm.
(3) The ratio (H1 / H2) of the haze H1 of the first ink receiving layer and the haze H2 of the second ink receiving layer is in the range of 2 to 65.
(4) The haze H1 of the first ink receiving layer is in the range of 60 to 97%, and the haze H2 of the second ink receiving layer is in the range of 1 to 50%.
(5) An adhesive layer is provided between the first ink receiving layer and the second ink receiving layer.
(6) The adhesive layer has a thickness of 80 μm or less.
(7) The first printed image and the second printed image are positioned so as to face each other with an adhesive layer interposed therebetween.
(8) A transparent protective film is attached on the second ink receiving layer.

In the present specification, “lightness” specifically means lightness L ^* in the L ^* a ^* b ^* color system. The brightness can be measured using a spectral colorimeter, for example, NF555 manufactured by Nippon Denshoku Industries Co., Ltd. When comparing the lightness of ink jet images or printed images, unless otherwise noted, the standard white plate is set on the back side of the test piece and the highest lightness portion of the images is compared.

The printed image provided on the printed matter for display of the present invention is likely to leave an impression. The reason for this is not clear, but the present inventors presume as follows.
That is, in the present invention, a plurality of print sheets on which ink jet prints of pictures, photographs, characters, etc. are prepared, and these print sheets are superposed so that the positions of ink jet images are the same. When light is applied from the back side of such a printed matter, as shown in FIG. 1, a large amount of light is transmitted to the front side in a high-brightness portion (a flower picture in FIG. 1), while the low-brightness portion is in a front side. It becomes difficult for light to pass through. Therefore, both transmitted light and reflected light enter the viewer's eyes from the high lightness area, reflected light enters from the low lightness area, and a large amount of reflected light and a small amount of transmitted light generally enters. Becomes Therefore, according to the principle described above, the brain is activated, and the posted information is likely to leave an impression on the viewer.

  Further, due to the transmission of light, in the printed matter of the present invention, the bright color portion is visually recognized beyond the original brightness of the color (the brightness of the color in the state where no light is emitted from the back surface), and for example, white. Since the part is visually recognized as whiter, the dynamic range (luminance difference) of the entire printed matter is widened, and the perspective and stereoscopic effect are emphasized as if the user were looking at the real thing. Furthermore, by overlapping printing sheets, the printed matter of the present invention has a certain thickness, and the position of the inkjet image may be slightly deviated, or the printing sheets may be slightly separated from each other. There is. As a result, in the printed matter of the present invention, both natural light incident from the front side, light such as indoor lighting, and irradiation light from the back side exhibit complicated behaviors, which cannot be realized in the printed matter composed of only one printing sheet. Form a deep and emotional printed image. As described above, the printed image according to the present invention tends to be impressive in terms of aesthetics.

  Furthermore, as an additional effect, there is an advantage that a viewer feels a natural impression without being aware of the presence of the backlight because both reflected light and transmitted light enter the eyes of the viewer.

  In addition, the thickness T1 of the first ink receiving layer is set to be larger than the thickness T2 of the second ink receiving layer, whereby the stereoscopic effect of the finally obtained printed image is improved, and the smoothness is smoothed. It is also possible to express various gradations and give a clear impression to what you see.

It is a schematic diagram for explaining the effect of the present invention. It is a schematic sectional drawing which shows an example of the structure of the printed matter of this invention.

  The present invention is a printed matter for a display in which an image edited / created by a personal computer, a hand-drawn image, an image captured by a camera (including a device with a camera function such as a smartphone or a digital camera), or a combination thereof is used as an image to be printed. It is held and used on the light source panel, and is suitably applied to, for example, a corton.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2. The printed matter of the present invention shown by 1 has a first ink receiving layer 3a and a second ink receiving layer 3b. The one located on the light source panel 10 side is the first ink receiving layer 3a, and the one located above it is the second ink receiving layer 3b.
The first ink receiving layer 3a and the second ink receiving layer 3b are formed on the first base sheet 5a and the second base sheet 5b, respectively. Thereafter, the first ink receiving layer 3a is formed on the first base sheet 5a, the first printing sheet 7a is formed, and the second ink receiving layer 3b is formed on the second base sheet 5b. The formed sheet is referred to as a second printing sheet 7b.
On the printing surfaces of the first ink receiving layer 3a and the second ink receiving layer 3b, a first printed image 8a and a second printed image 8b are formed by inkjet printing, respectively. Thereafter, the first print sheet 7a with the first print image 8a attached thereto is the first print sheet 9a, and the second print sheet 7b is the second print sheet 8b with the second print image 8b attached. The print sheet 9b of FIG.
In FIGS. 1 and 2 (α), the print surface of the second print sheet 9b faces upward, and the surface opposite to the print surface of the second print sheet 9b (hereinafter referred to as the back surface) and the first print The sheets 9a are stacked so that the printing surfaces thereof face each other, and the back side surface of the first printing sheet 9a faces the light source panel 10 side. Hereinafter, a display printed matter having such a laminated structure will be referred to as a structure A type display printed matter.
However, the laminated structure is not limited to the type of the structure A, and the laminated structure may be any mode.
For example, as shown in FIG. 2 (β), they may be laminated so that the printing surfaces face each other. In such a case, it is necessary to form the second print image 8 by reverse printing. Hereinafter, the display printed matter having such a laminated structure is referred to as a structure B type display printed matter.
Further, as shown in FIG. 2 (γ), the second printing sheet 9b is laminated so that the back side surface of the second printing sheet 9b faces upward and the printing surface of the second printing sheet 9b faces the back side surface of the first printing sheet 9a. The print surface of the first print sheet 9a may face the light source panel 10 side. Hereinafter, a display printed matter having such a laminated structure is referred to as a structure C type display printed matter.

As the base material sheet forming the printing sheet, any base material sheet can be used as long as it can appropriately transmit light after printing. Specifically, pulp paper or a resin sheet or film made of the following resin or the like can be used.
Vinyl resins such as polyvinyl alcohol and polyvinyl acetate;
Acrylic resin such as poly (meth) acrylate;
Polyolefin resins such as polyethylene, polypropylene;
Polyester resins such as polyethylene terephthalate;
Alternatively, a woven or non-woven fabric made of a fibrous material such as glass fiber, polyvinyl acetate fiber, vinylon fiber, polypropylene fiber, polyester fiber, polyethylene terephthalate fiber, acrylic fiber, aramid fiber or carbon fiber can also be used. The substrate sheet may be a laminated film or sheet in which two or more kinds of these are laminated.

  When the final printed image is required to have high artistry, it is preferable to use pulp paper such as Japanese paper, synthetic paper, woven cloth, or non-woven cloth for forming the first base material sheet 5a. Particularly preferred. This is because it is possible to give a soft impression to the finally obtained printed image. On the other hand, when it is desired to make the printed image stand out and be advantageous for commercial use such as advertisement, it is preferable to use a resin sheet or film for forming the first base material sheet 5a. This is because it is easy to expand the dynamic range in the printed image.

  The thickness of the printing sheet is appropriately determined depending on the size of the printed matter, the brightness of the light source, etc., but is usually set so that the average thickness is 0.1 to 2.0 mm. If the printing sheet is too thick, the amount of light transmitted from the back surface may be insufficient, and if it is too thin, the strength may be insufficient. The average thickness is measured according to JIS P 8118.

  Ink jet printing may be performed by a known method. That is, the brightness of the image to be printed is adjusted with known image editing software, for example, Adobe Photoshop CS6 (registered trademark) manufactured by Adobe Systems Incorporated (hereinafter, this may be abbreviated as Photoshop), if necessary. Printing may be performed with a known inkjet printer. A non-contact type printer is preferable. As the printing ink, any inkjet ink can be used regardless of whether it is a dye type or a pigment type as long as it does not impair the light transmittance of the printing sheet obtained after printing. However, when a delicate expression such as human skin or jewelry is required, the aqueous pigment-based inkjet is particularly preferable.

  The second print image 8b provided on the second printing sheet 7b may be a print target image itself, or may be a print image obtained by adjusting the print target image to a desired lightness. May be. Hereinafter, the image for the second print image 8b may be referred to as the upper image.

In the second printed sheet 9b having the second printed image 8b, it is preferable that the difference in brightness between the highest lightness portion and the lowest lightness portion is large, and specifically, the state where no light is applied from the back side ( That is, it is preferable that the difference in lightness is 55 or more, particularly 65 to 90 in terms of L ^* value under the condition that the reflected light is selectively observed. When the difference in brightness of the inkjet image is increased, the difference in brightness is usually accompanied and the difference in brightness is further increased when light is emitted from the back surface of the printing sheet (that is, when both transmitted light and reflected light are observed). Also grows. Thereby, the stereoscopic effect and the depth feeling can be particularly improved.

  The thickness T1 of the first ink receiving layer is set to be larger than the thickness T2 of the second ink receiving layer. By relatively increasing the thickness T1 of the first ink receiving layer located on the light source panel side, the effect of scattering transmitted light is increased, and a soft impression can be given to the finally obtained printed image. . On the other hand, the thickness T2 of the second ink receiving layer located on the upper side needs to be relatively small because if the thickness is too large, the printed image finally obtained may become unclear. . By making a difference between T1 and T2, it is possible to give a stereoscopic effect and smooth gradation expression to the finally obtained printed image.

  The ratio (T1 / T2) of the thickness T1 of the first ink receiving layer and the thickness T2 of the second ink receiving layer is preferably in the range of 1.5 to 7, and is in the range of 2 to 5. Is particularly preferred.

  The thickness T1 of the first ink receiving layer is preferably 25 to 55 μm, and particularly preferably 25 to 45 μm. Further, the thickness T2 of the second ink receiving layer is preferably 5 to 23 μm, and particularly preferably 10 to 20 μm.

  The haze H1 of the first ink receiving layer is preferably set larger than the haze H2 of the second ink receiving layer. By relatively increasing the haze H1 of the first ink receiving layer located on the light source panel side, the effect of scattering transmitted light is increased, and a soft impression can be given to the finally obtained printed image. This is because. On the other hand, the haze H2 of the second ink receiving layer located on the upper side needs to be relatively small because if it is too large, the printed image finally obtained may be unclear. . By making a difference between H1 and H2, it is possible to give a stereoscopic effect and smooth gradation expression to the finally obtained printed image.

  The ratio (H1 / H2) of the haze H1 of the first ink receiving layer and the haze H2 of the second ink receiving layer is preferably in the range of 2 to 65, and is preferably in the range of 4 to 55. It is particularly suitable.

  The haze H1 of the first ink receiving layer is preferably 60 to 97%, and particularly preferably 80 to 95%. The haze H2 of the second ink receiving layer is preferably 1 to 50%, and particularly preferably 1.5 to 30%.

  The print sheet (the print sheet on which the print image is attached) preferably has a light-transmitting property, specifically, 30% or more in the portion having the highest brightness with respect to visible light. In particular, it is preferable that it has a light transmittance of 35% or more (according to JIS K 7361). Further, it is more preferable that the portion having the lowest lightness has a light transmittance of 10% or less, particularly 3% or less. This light transmittance means the ratio of the total transmitted light to the total incident light when a light beam is applied to the back side of the printed surface of the test piece, and the total transmitted light includes diffuse transmitted light and parallel transmitted light. Be done. If the light transmittance of the portion having the lowest brightness is too high, the brain activation effect by reflected light may be diminished. That is, when the light emitted from the light source panel 10 is transmitted toward the surface of the print sheet in the portion having the lowest brightness, the printed matter is recognized as a thin film by human eyes, and the reality of the printed image is reduced. is there.

  When the printed sheets are stacked, they may be fixed by a physical means such as a screw or a nail, but from the viewpoint of high workability, the adhesive layer 4 is interposed as shown in FIG. It is preferable to fix it chemically. There is no particular limitation on the adhesive used for the adhesive layer 4, and thermosetting resins such as epoxy resin, urea resin, phenol resin, bismaleimide resin, and polyimide resin; (meth) acrylic acid, (meth) acrylate, and the like ( An appropriate material such as a (meth) acrylic adhesive material; or a heat-welding resin such as an acid-modified olefin resin modified with an unsaturated carboxylic acid such as (meth) acrylic acid or maleic anhydride can be used. From the viewpoint of not impairing the transmission of light from the back surface, it is preferable to use a transparent adhesive material. "Transparent" means that the light transmittance to visible light is 90% or more when completely cured with a thickness of 1.0 mm or more.

  The adhesive layer 4 may be formed by a method in which the adhesive is dissolved in a solvent and then applied, but the workability is excellent and the finish is clean. Therefore, a transparent film such as polyester coated with the adhesive on both sides is used as a release paper. It is preferably used in the form of a sandwiched double-sided PSA sheet.

  The adhesive layer 4 may be provided at any position, but it is preferably provided on the entire contact surface of the first print sheet 9a and the second print sheet 9b. This is because an appropriate gap can be provided between the print sheets so that light entering from the front side and the back side undergoes diffuse reflection, refraction, etc. and is transmitted in a complicated manner, so that a deep printed image can be obtained. The thickness of the pressure-sensitive adhesive layer 4 is not particularly limited, but the average thickness is preferably 0.02 to 1.00 mm. This is because if the thickness is too large, the image finally obtained becomes unclear due to light diffraction, and if the thickness is too small, the adhesion may be insufficient.

  The printed matter 1 of the present invention can take various forms under the condition that it has the above-mentioned basic structure.

  For example, a protective layer made of a known transparent resin may be provided on the second printed sheet 9b.

  In addition to the first print sheet 9a and the second print sheet 9b, print sheets may be further laminated, that is, three or more print sheets may be included. Three or more print sheets may be laminated in any manner, as in the case of two print sheets. Further, the print sheet may be obtained by providing the first ink receiving layer 3a and the second ink receiving layer 3b on both sides of the printing sheet and printing on both sides. In this case, in the print image data, what is printed on 3a is reverse data and what is printed on 3b is normal data.

  At this time, detailed aspects such as the manufacturing method, the configuration of each print sheet, and the laminated structure are the same as those in the case of two print sheets.

  From the viewpoint of the balance between the transmitted light and the reflected light, the printed matter 1 of the present invention preferably has a light transmittance of 30% or more, particularly 35% or more in the highest brightness portion. Further, it is more preferable that the light transmittance is 10% or less, particularly 3% or less in the lowest lightness portion.

  Further, the average thickness of the printed material 1 of the present invention is preferably 0.1 to 6.0 mm, and particularly preferably 0.2 to 3.0 mm. When the average thickness falls within the above numerical range, the strength and the artistry of the printed image can be increased while maintaining the balance between the transmitted light and the reflected light, and a printed matter with high commercial value can be obtained.

The printed matter of the present invention is held on the light source panel for use. The light source panel is not particularly limited and various known light source panels can be used, but in general, it is preferable to use a planar LED panel in which a large number of LEDs are arranged. The brightness of the planar LED panel is preferably 500 to 5000 cd / cm ² , and more preferably 800 to 4000 cd / cm ² from the viewpoint of the balance between transmitted light and reflected light. If the brightness of the planar LED panel is too high, there is a risk that the transmitted light will increase in the portion of the printed matter having the lowest brightness, and the reality of the image will be lost. If the brightness of the planar LED panel is too low, the transmitted light in a portion of the printed matter having the highest brightness is reduced, and an image is formed of only reflected light, which may not provide a stereoscopic effect or a sense of depth.

  When the printed matter of the present invention is held on the light source panel to form a display and light is emitted from the back side, people visually recognize a printed image formed by the first printed image 8a and the second printed image 8b overlapping each other. . In such a printed image, the reflected light mainly enters from a low lightness portion, and the reflected light and the transmitted light enter a high lightness portion. Further, the light irradiation from the back surface increases the brightness difference in the printed image as compared with that before the irradiation, that is, the dynamic range is widened. As a result, such a display activates the brain while attracting people's attention, and the posted information remains in the impression of more people. In addition, the thickness T1 of the first ink receiving layer located on the light source panel side is set to be larger than the thickness T2 of the second ink receiving layer located on the upper side, so that the print image finally obtained The three-dimensional effect is improved, and smooth gradation expression of the printed image is also possible, giving a clear impression to the person who sees the printed image. Therefore, the present invention is applied to an internally illuminated display represented by Colton, and is suitably used in a cosmetics section of a department store or the like. In addition, it can be applied to the production and reproduction of photographs and paintings, and it is possible to realize new works that have never been seen before and appeal to the emotions of the viewer.

The excellent effects of the present invention will be described in the following examples.
The test evaluation methods and materials used in the examples are shown below.

<Method of evaluating stereoscopic effect, gradation expression, and color clarity>
A light source panel (LED acrylic panel, made by FREESHINE, effective screen size: 285 x 406 mm, color temperature: 6000 K, illuminance: about 5000 Lx) is installed on the back surface (9a side) of the display prints obtained in the examples and comparative examples. Then, with the light source panel turned on, each evaluator visually evaluated from the 9b side. In the evaluation, the light amount of the light source panel was adjusted so that the brightness of the image was constant in the example and the comparative example.
For visual evaluation, 9 evaluators performed three-dimensional effect (realism), gradation expression (granularity), and vividness of color, under the supervision of a professional photographer and evaluation leveling by the evaluator. The three items of the degree (color reproducibility) were evaluated on a scale of 5 from 1 to 5, and the minimum value, the maximum value and the average value of the evaluation results of each item were obtained. The larger the number, the better the evaluation.

<Method of measuring haze value and light transmittance>
The haze value and the light transmittance are obtained by removing the ink receiving layer or the base sheet (and the glue layer, if any) from each printing sheet to obtain a base sheet only or a sheet having an ink receiving layer only, This was measured using a haze meter (HZ-V3, manufactured by Suga Test Instruments Co., Ltd.). The light transmittance was measured according to JIS K 7361 and the haze value was measured according to JIS K 7136.

<Method of measuring thickness>
The thickness of each printing sheet was measured using a dial gauge. The thickness of the ink receiving layer was measured using a digital microscope (VH-Z100UR manufactured by Keyence Corporation).

<Printing sheet>
The following commercially available printing sheet having an ink receiving layer was used for the production of printed matter for display. Here, each of the printing sheets having the glue layer has the glue layer on the surface opposite to the surface having the ink receiving layer of the base material. Table 1 shows the configurations of the printing sheets (I) to (V).

<Image printing>
A portrait image was printed using an inkjet printer (SC P9050, manufactured by Seiko Epson Corporation) with a print size of A3. The ink used was of the type in which the pigment component was dispersed.
The ink penetration depth is determined by cutting a portion of the film having the highest color density after printing and observing the ink receiving layer from the cut surface using a digital microscope (VH-Z100UR, manufactured by Keyence Corporation). It was calculated from the thickness of the part.

[Example 1]
The normal data was printed on the ink receiving layer of the printing sheet (III) to obtain a printing sheet (III ′). Further, the normal rotation data was printed on the ink receiving layer of the printing sheet (II) to obtain a printing sheet (II ′). Next, the back surface of the print sheet (II ′) and the print surface of the print sheet (III ′) were attached to each other with the glue layer of the print sheet (II ′). Subsequently, the back surface of the printing sheet (III ′) and the light source panel were bonded together with an acrylic adhesive (TL-450S-16, manufactured by Lintec Co., Ltd.) to obtain a printed matter for display of the above-mentioned structure A. .
That is, in the first embodiment, the print sheet (III ′) is the first print sheet and the print sheet (II ′) is the second print sheet. Table 2 shows the properties of the printed matter for display, and Table 3 shows the evaluation results.

[Comparative Example 1]
A printed matter for a display of the type of structure A was obtained in the same manner as in Example 2 except that the print sheet (II ′) was the first print sheet and the print sheet (III ′) was the second print sheet. Obtained. However, since the printed sheet (III ′) does not have a glue layer, the acrylic adhesive is used to bond the sheets to each other, and the light source panel is attached to the printed sheet (II ′) with the glue layer. It was Table 2 shows the properties of the printed matter for display, and Table 3 shows the evaluation results.

[Example 2]
The normal data was printed on the ink receiving layer of the printing sheet (III) to obtain a printing sheet (III ′). In addition, reverse data was printed on the ink receiving layer of the printing sheet (I) to obtain a printing sheet (I ′). Next, the printing surfaces of both printing sheets were bonded together with the acrylic adhesive. Subsequently, the back side surface of the printing sheet (III ′) and the light source panel were attached to each other with the acrylic pressure-sensitive adhesive material to obtain a printed matter for display of the structure B described above.
That is, in the second embodiment, the print sheet (III ′) is the first print sheet and the print sheet (I ′) is the second print sheet. Table 2 shows the properties of the printed matter for display, and Table 3 shows the evaluation results.

[Comparative Example 2]
Printing is performed using the printing sheet (I) instead of the printing sheet (III) to obtain a printing sheet (I ′), and the first printing sheet and the second printing sheet are both printing sheets (I ′). A printed product for display of the structure B type was manufactured in the same manner as in Example 2 except that the printed matter for display was composed of Table 2 shows the properties of the printed matter for display, and Table 3 shows the evaluation results.

[Example 3]
Reversal data was printed on the ink receiving layer of the printing sheet (IV) to obtain a printing sheet (IV ′). Further, the reversal data was printed on the ink receiving layer of the printing sheet (I) to obtain a (I ′) printing sheet. Then, the printing surface of the printing sheet (I ′) and the back side surface of the printing sheet (IV ′) were bonded together by the glue layer of the printing sheet (IV ′). Subsequently, the printing surface of the printing sheet (IV ′) and the light source panel were attached to each other with the acrylic pressure-sensitive adhesive material to obtain a printed matter for display of the above-mentioned structure C type.
That is, in the third embodiment, the print sheet (IV ′) is the first print sheet and the print sheet (I ′) is the second print sheet. Table 2 shows the properties of the printed matter for display, and Table 3 shows the evaluation results.

[Comparative Example 3]
Printing is performed using the printing sheet (II) instead of the printing sheet (IV) to obtain the printing sheet (II ′), and the printing sheet (II ′) is arranged so as to be the first printing sheet. A printed matter for display of the structure C type was obtained in the same manner as in Example 3 except for the above. Table 2 shows the properties of the printed matter for display, and Table 3 shows the evaluation results.

[Example 4]
The normal data was printed on the ink receiving layer of the printing sheet (V) to obtain a printing sheet (V '). Further, the normal rotation data was printed on the ink receiving layer of the printing sheet (I) to obtain a printing sheet (I ′). Then, the back surface of the printing sheet (I ′) and the printing surface of the printing sheet (V ′) were attached to each other with the acrylic adhesive. Subsequently, the back side surface of the printing sheet (V ′) and the light source panel were attached to each other with the acrylic pressure-sensitive adhesive material to obtain a printed matter for display of the structure A type.
That is, in Example 4, the print sheet (V ′) is the first print sheet and the print sheet (I ′) is the second print sheet. Table 2 shows the properties of the printed matter for display, and Table 3 shows the evaluation results.

[Comparative Example 4]
A printed matter for a display of the structure A type was prepared in the same manner as in Example 4 except that the print sheet (I ′) was the first print sheet and the print sheet (V ′) was the second print sheet. Obtained. Table 2 shows the properties of the printed matter for display, and Table 3 shows the evaluation results.

1. Printed matter for display 3a. A first ink receiving layer, 3b. Second ink receiving layer 5a. First substrate sheet, 5b. Second base sheet 7a. First printing sheet, 7b. Second printing sheet 8a. First printed image, 8b. Second printed image 9a. First printed sheet, 9b. Second printed sheet 4. Adhesive layer 10. Light source panel

Claims (9)

In printed matter for display used by being held on the light source panel,
A first printed image on the first ink-receiving layer and a second printed image on the second ink-receiving layer and corresponding to the first printed image, the first printed image Is located on the light source panel side, and the second print image is located on the side away from the light source panel,
A printed matter for display, wherein the thickness T1 of the first ink receiving layer is set to be larger than the thickness T2 of the second ink receiving layer.   The printed matter for a display according to claim 1, wherein a ratio (T1 / T2) between the thickness T1 of the first ink receiving layer and the thickness T2 of the second ink receiving layer is in the range of 1.5 to 7.   The printed matter for display according to claim 2, wherein the thickness T1 of the first ink receiving layer is in the range of 25 to 55 µm, and the thickness T2 of the second ink receiving layer is in the range of 5 to 23 µm.   The printed matter for a display according to claim 1, wherein the ratio (H1 / H2) of the haze H1 of the first ink receiving layer and the haze H2 of the second ink receiving layer is in the range of 2 to 65.   The printed matter for display according to claim 4, wherein the haze H1 of the first ink receiving layer is in the range of 60 to 97%, and the haze H2 of the second ink receiving layer is in the range of 1 to 50%.   The printed matter for display according to claim 1, wherein an adhesive layer is provided between the first ink receiving layer and the second ink receiving layer.   The printed matter for a display according to claim 6, wherein the adhesive layer has a thickness of 80 μm or less.   The printed matter for display according to claim 6 or 7, wherein the first printed image and the second printed image are positioned so as to face each other with an adhesive layer interposed therebetween.   The printed material for a display according to claim 1, wherein a transparent protective film is attached on the second ink receiving layer.