JPH0950252A - Light-transmissible printed material and viewer using that - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a high-definition transmitted image having, a high color density for a long time without damages and to decrease the production cost. SOLUTION: This light-transmissible printed material (A) is used to display a transmitted image by irradiating the material (A) through the back surface. A multicolor printed layer 2 having a positive image is formed on the one surface of a transparent base film 1, on which a transparent protective film 4 is laminated with an adhesive layer 3. A white coating layer may be formed on the opposite surface of the transparent base film 1. Or, a translucent film may be used instead of the transparent base film 1. Thus, the multicolor printed layer 2 is covered with the transparent protective film 4 (adhesive 3), a transmitted image without damages such as chipping can be obtd. for a long time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-transmissive printed matter for displaying a transmission image by irradiating light from the back side and a viewer using the same.

[0002]

Generally, paintings are usually viewed in museums and photobooks, but if you want to view them at home or in a restaurant, replace the color photographic film in a viewer with a built-in light source. Put it on
It is conceivable to look at the transmission image. Alternatively, it is conceivable to see a transparent image of a pattern printed on a transparent film. However, although the color photographic film is excellent in quality, there are problems that the manufacturing cost is extremely high and the size is limited by the size of the photographic film. On the other hand, a transparent film having a pattern printed on it has a drawback that the printed layer is damaged when repeatedly used and the artistic value is impaired. Further, even in an electric display that has been conventionally used for display, advertisement, etc., it is possible to use such a photographic film or a printed matter when replacing a picture or the like, but even in this case, the same applies. There's a problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to obtain a transmission image which is free from damage for a long period of time and which has a high definition and a high density of multiple colors. It is also an object of the present invention to provide a light-transmissive printed matter that can be obtained at low cost, and also provide a viewer suitable for using the light-transmissive printed matter.

[0004]

In order to achieve the above-mentioned object, the light-transmissive printed matter according to the present invention is a light-transmissive printed matter illuminated by back light and has a regular image on one side of a transparent substrate film. Is formed, and a transparent protective film is laminated thereon via an adhesive layer.
Then, it is preferable to form a white coat layer on the opposite surface of the transparent substrate film or to use a semitransparent substrate film instead of the transparent substrate film.

In order to achieve the same object, another type of light-transmissive printed matter according to the present invention is a light-transmissive printed matter which is illuminated by back light and has a positive image on one side of a transparent substrate film. A multicolor printing layer is formed, and a transparent protective film is laminated on the multicolor printing layer via an adhesive layer, and a multicolor printing layer having an inverse image is formed on the opposite surface of the transparent base film, and an adhesive agent is formed thereon. It is characterized in that a transparent protective film is laminated via layers. Also in this type, it is preferable to form a white coat layer on the opposite surface of the transparent substrate film or to use a semitransparent substrate film instead of the transparent substrate film.

As a viewer for irradiating the light-transmitting printed matter from the back side to obtain a transmission image, it comprises a casing having a rectangular irradiation surface on the front side and a light source built in the casing. It is convenient to replace the light-transmitting printed matter by using a groove having grooves for inserting and setting the light-transmitting printed matter on both left and right sides and the bottom of the irradiation surface.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view showing an example of the light-transmitting printed material according to the present invention. The light-transmitting printed material A shown in the figure has a multi-colored printing layer 2 of a normal image formed on one surface of a transparent substrate film 1. Then
A transparent protective film 4 is laminated on top of this via an adhesive layer 3. A polyethylene terephthalate film is preferably used as the transparent substrate film 1. The multicolor printing layer 2 may be formed by any printing method. It is difficult to obtain a high transmission density by offset printing, but the cost is low. In this case, considering the printability in the offset sheet-fed printing press, the thickness of the polyethylene terephthalate film is preferably 50 to 300 μm, and practically about 100 μm. Screen printing is suitable for obtaining a high transmission density, but it is unsuitable for fine patterns because of its poor resolution, and it is more expensive than offset printing. A polypropylene film (15 to 50 μm) is preferably used as the transparent protective film 4. Specifically, a precoat type (adhesive layer 3
Is applied) to the multicolor printing layer 2 side of the transparent base material film 1 and laminated by hot pressing. By using the pre-coated polypropylene film as described above, mass production is possible at low cost. In addition, when a polyethylene terephthalate film is used for the original fabric, it is difficult to obtain a printed matter having a uniform and glossy feeling by applying a film by an ordinary dry laminating method.

The light-transmissive printed matter B shown in FIG. 2 uses the transparent substrate film 1 having a white coated layer 5 on one side, and the non-coated side is a multicolored printed layer of a normal image as described above. 2 is formed, and the transparent protective film 4 is laminated thereon with the adhesive layer 3 interposed therebetween. Further, the light-transmitting printed matter C shown in FIG. 3 uses a semi-transparent substrate film 6 instead of the transparent substrate film 1, and in the same manner as described above, a normal image multicolor printing layer is provided on one side thereof. 2 is formed, and the transparent protective film 4 is laminated thereon with the adhesive layer 3 interposed therebetween. The white coat layer 5 and the semi-transparent base film 6 are made by dispersing inorganic or organic white fine particles, and are excellent in light diffusivity without significantly reducing the total transmittance of light from the back, It is necessary to improve whiteness and uniformity of screen brightness.

FIG. 4 is a cross-sectional view showing an example of another type of light-transmitting printed matter according to the present invention. The light-transmitting printed matter D shown in FIG. 12 is formed, and a transparent protective film 14 is laminated thereon with an adhesive layer 13 interposed therebetween, and the transparent base film 1
The multi-color printing layer 15 of the reverse image is formed on the opposite surface of the No. 1 and the transparent protective film 17 is laminated on the multi-color printing layer 15 via the adhesive layer 16. As the transparent substrate film 1, a polyethylene terephthalate film is preferably used as in the case of the previous type. The multicolor print layers 12 and 15 may be formed by offset printing. That is, since printing is performed on both sides of the transparent substrate film 11, it is possible to obtain a high-definition multicolor high-density image at low cost. Transparent protective film 1
Polypropylene films (about 30 μm) similar to those of the previous type are used as 4, 17. And
As in the case of the previous type, a pre-coated type (adhesive layers 13 and 16 applied) polypropylene film is overlaid on both sides of the transparent substrate film 11 on which the multicolor printing layers 12 and 15 are formed, and hot pressed. It is good to stick together.

A light-transmissive printed matter E shown in FIG. 5 uses a transparent substrate film 11 having a white coating layer 18 on one side, and a multicolor printing layer 12 having a non-coated surface normal image is printed thereon. The transparent protective film 14 is laminated via the adhesive layer 13, the multicolor printing layer 15 of the reverse image is printed on the white coat layer 18, and the transparent protective film 17 is provided thereon via the adhesive layer 16. It has a laminated structure. Also,
The light-transmissive printed matter F shown in FIG. 6 uses the same semi-transparent substrate film 19 as described above instead of the transparent substrate film 1. That is, as described above,
A normal image multicolored printing layer 12 is formed on one surface of the semitransparent film 19, a transparent protective film 14 is laminated on it via an adhesive layer 13, and a reverse image is formed on the opposite surface of the semitransparent substrate film 19. The multicolor printing layer 15 is formed, and the transparent protective film 17 is laminated on the multicolor printing layer 15 via the adhesive layer 16.

FIG. 7 is a view showing a viewer used to obtain a transmission image by irradiating the above-mentioned light-transmitting printed matter from the back side, as viewed from above the front side.

As shown in the figure, the viewer 20 comprises a casing 22 having a rectangular irradiation surface 21 on the front surface and a light source 23 built in the casing 22 for inserting and setting a light-transmissive printed matter. The groove 24 of the irradiation surface 2
It is provided on both the left and right sides of 1 and the bottom. The irradiation surface 21 of the casing 22 is made of a white acrylic plate. The light source 23 may be a fluorescent lamp, but if a tungsten lamp is used, it has an effect of giving emotion to the transmitted image. Further, since the light source 23 generates heat, the casing 2
The ventilation hole 25 is provided so as not to be conspicuous at the bottom of 2.

To use the viewer 20, as shown in FIG. 8, the light-transmissive printed matter E of the above is inserted into the groove 24 from above and set on the irradiation surface 21. The light source 23 may be switched on before or after setting the light-transmissive printed matter. By doing so, the light diffusely reflected by the acrylic plate on the irradiation surface passes through the printed matter F, and the observer sees the image by the transmitted light.

When the above-mentioned light-transmissive printed matter is used for an electric decoration board, it is preferable to sandwich it from both sides with glass plates or the like.

[0016]

Example The light-transmissive printed matter E described above was prepared as follows.

First, a specific picture which is an object is photographed by a still camera with an 8 × 10 inch color film (KO).
A color photographic film obtained by photographing and developing using a DAK Ektachrome was used as a color original. This color original was color-separated and shaded by a color scanner. The shaded screen ruling was 300 lines / inch (175 lines / inch in normal offset printing), and processing was carried out at the original size. In this way, two sets of four-color master plates of yellow, red, indigo, and black, which were reversely reversed for front surface printing and back surface printing, were obtained. Next, using this original plate and a plate material having a silicone resin surface, 2
A printing plate for the set was prepared.

Next, as for printing, as shown in FIG.
As the transparent substrate film 11, a polyethylene terephthalate film having a white coat layer 18 on one surface (thickness 10
0 μm), and waterless offset printing is performed on the non-coated surface of the transparent substrate film 11 using the above-mentioned printing plate for printing to provide the multicolor printing layer 12, and then the back surface on the white coating layer 18 side. A multicolor printing layer 1 is printed by using the printing plate for printing in the same printing method so that the registrations of the patterns on the front and back sides match.
5 were provided. This printing order may be either first.

Next, two precoated polypropylene films (30 μm) were used, which were superposed on both sides of the transparent substrate film 11 on which the multicolor printing layers 12 and 15 were formed, and pasted by hot pressing.

The transmission density of the shadow portion of the image obtained as described above is measured with a Macbeth TD904 densitometer,
An image having a high density contrast close to that of a color photographic film was obtained, which was about the same level as 2.58 with respect to 2.71 of a color original. The transmission density of the light-transmitting printed matter B shown in FIG. 2 produced by offset single-sided printing was 1.67.

Light-transmissive printed matter E produced in this way
When the viewer 20 described above was used to irradiate from the back side, a high-definition transmitted image with a high density which was almost the same as that of a color original was obtained.

[0022]

As described above, the light-transmissive printed matter of the present invention has a structure in which the multicolor printing layer formed on the substrate film is covered with the transparent protective film, so that it can be used for a long period of time. It is possible to obtain a transparent image without any defects. In the case where the forward and reverse multicolor printing layers are formed on both sides, by using offset printing, it is possible to obtain a high-definition, multicolor, high-density transmission image and to manufacture at low cost.

Further, by using the viewer of the present invention, it is possible to set the light-transmissive printed matter on the irradiation surface by replacing it, which is convenient for exchanging various light-transmissive printed matters for viewing.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a light-transmitting printed material according to the present invention.

FIG. 2 is a cross-sectional view showing a modified example of the light transmissive printed matter shown in FIG.

FIG. 3 is a cross-sectional view showing another modified example of the light-transmitting printed matter shown in FIG.

FIG. 4 is a cross-sectional view showing an example of another type of light transmitting printed material according to the present invention.

5 is a cross-sectional view showing a modified example of the light transmissive printed matter shown in FIG.

6 is a cross-sectional view showing another modified example of the light-transmitting printed matter shown in FIG.

FIG. 7 is a view showing a viewer suitable for using a light-transmitting printed matter as viewed from above the front surface.

FIG. 8 is a diagram showing a method of setting a light-transmissive printed matter on the viewer shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transparent base film 2 Multicolor printing layer 3 Adhesive layer 4 Transparent protective film 5 White coat layer 6 Semi-transparent base film 11 Transparent base film 12 Multicolor printing layer 13 Adhesive layer 14 Transparent protective film 15 Multicolor printing Layer 16 Adhesive Layer 17 Transparent Protective Film 18 White Coat Layer 19 Semi-Transparent Base Film 20 Viewer 21 Irradiated Surface 22 Casing 23 Light Source 24 Groove 25 Vent

Claims (7)

[Claims] 1. A light-transmissive printed matter illuminated by back light, comprising a transparent base film, on one side of which is formed a multicolored printing layer of a normal image, and a transparent protective film is provided thereon via an adhesive layer. A light-transmissive printed matter characterized by being laminated. 2. The light-transmitting printed matter according to claim 1, wherein a white coat layer is formed on the opposite surface of the transparent substrate film. 3. A transparent protective film, which is a light-transmissive printed matter illuminated by back light, comprising a semi-transparent substrate film on one side of which is formed a multicolored printing layer having a positive image, and an adhesive layer interposed therebetween. A light-transmissive printed material, characterized in that: 4. A light-transmissive printed matter which is illuminated by back light, comprising a transparent base film having a multi-colored printing layer having a positive image formed on one side thereof, and a transparent protective film provided thereon with an adhesive layer interposed therebetween. A light-transmissive printed material comprising a multi-color printing layer having a reverse image formed on the opposite surface of the transparent substrate film, and a transparent protective film laminated on the multi-color printing layer via an adhesive layer. 5. The light-transmitting printed matter according to claim 4, wherein a white coat layer is formed on the opposite surface of the transparent substrate film. 6. A transparent protective film, which is a light-transmissive printed matter illuminated by back light, comprising a semi-transparent substrate film on one side of which a normal image multicolor printing layer is formed, and an adhesive layer interposed therebetween. And a transparent protective film laminated on the opposite surface of the transparent substrate film on the opposite surface of the transparent substrate film with an adhesive layer interposed therebetween. 7. A viewer used for obtaining a transmission image by irradiating the light-transmitting printed matter according to any one of claims 1 to 6, wherein the casing has a rectangular irradiation surface on the front surface. A viewer comprising a light source built in the casing, and a groove for inserting and setting a light-transmissive printed matter on both left and right sides and a bottom portion of the irradiation surface.