JPS6262362A - Night-and-day applicable photograph and manufacture thereof - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a photograph that can be used for both transmitted light and reflected light, that is, a day and night photograph used for indoor and outdoor advertisements and exhibitions, and a method for manufacturing the same. be.

[Conventional Technique 4N] Conventionally, photographs viewed using transmitted light, that is, internally illuminated photographs with illumination from behind, become dark and invisible when the rear illumination is turned off. Also, even if you turn on the back lighting, if the outside, that is, the front, is bright, the image in the photo will still be almost invisible.

Therefore, conventional photographs viewed in transmitted light are only visible at night or in a dark room. You can't see well in bright light outside, so
A major drawback is that it cannot be used outdoors in bright daylight.

In addition, conventional photographs viewed with reflected light, that is, photographs viewed with light from the front, for example, photographs printed on photographic paper,
In bright outdoors or indoors, it is possible to see a clear image using reflected light, but this cannot be seen using transmitted light.

In other words, in the conventional technology, a photograph viewed with transmitted light cannot be viewed with reflected light. Also, a photograph viewed with reflected light cannot be viewed with transmitted light.

Therefore, it is not possible to take both transmitted light and reflected light in one photograph, that is, to take both day and night photographs.

[Problems to be Solved by the Invention] As described above, in the conventional technology, photographs viewed using transmitted light are made clear and beautiful, but they can only be used at night or in dark indoors.

In bright areas during the day, there is no other way than to take photographs using reflected light.

This invention was made to solve the drawback of conventional photography, which cannot be used for both transmitted light and reflected light, that is, cannot be used for both day and night.

Means for Solving Problem E] The day/night photograph of the first invention described in the claims is made by stacking two identical transparent photographs coated with a translucent milky white film on the back and facing them in the same direction. It is made of a structure in which this is fixed.

A second invention described in the claims is an invention of a method for manufacturing the day/night photograph of the first invention. First of all, with conventional technology, the reason why a single photograph cannot be used for both transmitted light and reflected light is that a photograph viewed with transmitted light has twice the density of the image compared to a photograph viewed with reflected light. It is necessary to

Therefore, if you look at a photographic image that has just the right density when viewed under reflected light, but when you view it under transmitted light, it will be too faint to see a clear image. If you look at the photo image with reflected light, it will be too bright and dark, making it difficult to see the image clearly.

Because of these contradictory conditions, it has been impossible with conventional technology to produce a photograph that uses both transmitted light and reflected light in a single photograph.

Therefore, if you want a single photo to be used as both a photograph viewed in reflected light and a photograph viewed in transmitted light, if C is the appropriate density of an image when viewed in reflected light, then when viewed in transmitted light, , it is necessary to simultaneously satisfy the condition that the density of the image is twice the above-mentioned value, that is, 2C.

As shown in FIG.
), the problem of the above conditions has been solved by the structure in which the parts are bonded and integrated, that is, the structure of the first invention described in the claims.

[Effect] This will be explained with reference to FIG.

However, the density of the image on board A is assumed to be C.

First, when viewing with electric illumination (shi) from Inner 111 (1), that is, transmitted light, this transmitted light passes through two A boards and reaches the viewpoint (E
), you will see two images of the same image II (3) on board A, that is, an image with a density of 2C, so you can see a clear image with just the right density.

During the day when it is dull, the sun's rays (S) from the outside (0), that is, when viewed with reflected light, the sun's rays (S) are reflected, passing through the image (3) on plate A, translucent milky white polyethylene l1
Since the reflected light (S) is seen at the viewpoint (E), the image 11(3) of only one plate A is seen, so the density of the image is half of the former, In other words, it becomes C. As a result, you can see a beautiful image just like looking at a photograph printed on photographic paper.

[Example] Next, an example of the present invention will be described with reference to FIG. Also, as a reference, a cross-sectional view of the printed photographic paper is shown in the second section.
As shown in the figure.

First, attach a transparent plastic plate (1) (acrylic resin plate, vinyl chloride resin plate,
Another suitable resin plate) is glued on top of this. As a result, the image (dye emulsion) (3) on the surface of the photographic paper is completely protected during the next alkaline solution treatment.

Next, the polyethylene film (FIG. 2, 4') coated on the back side of the photographic paper is peeled off. The photographic paper is then immersed in an alkaline solution to dissolve and remove the paper (pulp) on the back side of the photographic paper (Fig. 2P). With this, this picture 1! The translucent milky white polyethylene film (4) coating the back side of (dye emulsion) (3) is exposed. (See Figures 1 and 2) The photographic paper has now been completely stripped of its main component, the opaque paper (bulb) (P), and the remaining image (dye emulsion) (3
) has a structure in which both sides are fixed like a sandwich with a transparent plastic plate (1) on the front side and a translucent milky white polyethylene film (4) on the back side. This will be called A board. Prepare another A board.

By stacking two sheets of A in the same direction and fixing them by adhering them with transparent thermocompression adhesive (2) where the images on both sheets perfectly match, you can create a photo for both day and night use.

Also, instead of adhering the transparent plastic plate (1) to the surface on which the photographic image (dye emulsion) (3) is located, a transparent plastic may be applied.

Furthermore, weather resistance can be further enhanced by pasting or coating an ultraviolet absorbing film on the front and back surfaces.

[Effects of the Invention] Even with the same photograph, an image viewed with transmitted light looks much clearer and more beautiful than an image viewed with reflected light. However, traditional transmitted-light photography can only be used at night or indoors. A major drawback is that it cannot be used outside in bright light.

Next, the main points of the effects of the present invention will be described.

1 Since the present invention is a photograph using both transmitted light and reflected light,
Unaffected by usage location and light/darkness. In other words, in a single photo, when taken outdoors in bright daytime, a beautiful image can be seen using reflected light, and when taken at night or indoors, when taken using transmitted light, an even more vivid and powerful image can be seen.

2. Conventional photographs have poor weather resistance. In other words, it is prone to discoloration and fading. Since the present invention has a II structure in which the dye emulsion of the image is encapsulated in plastic, it is protected from ultraviolet rays, moisture, oxygen in the air, mold and bacteria in dust, etc., which cause discoloration and fading. This greatly enhances weather resistance. Also, due to its structure, there is no need to worry about it getting wet.

Above, 1, 2. This effect is a major feature unique to the present invention that cannot be seen in conventional photography.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the day and night photograph of the present invention A/-A plate 0... Outside S... Sunlight 1... Transparent plastic plate...
...Electric lighting 2...Transparent adhesive E...Viewpoint lighting 3...Picture*<dye emulsion)■...Inside 4
...Translucent milky white polyethylene I...Inside
Len film Figure 2 is a cross-sectional view of color printed photographic paper 3... Image (dye emulsion) 4'... Polyethylene film 4... Translucent milky white poly P... Paper (pulp) Ethylene film

Claims (1)

[Claims] 1. Consisting of a structure in which two identical transparent photographs coated with a translucent milky white film are stacked on top of each other, oriented in the same direction, and then fixed once the two images match perfectly. Day and night photos. 2. Glue the transparent plastic plate (1) onto the surface of the photo printed on photographic paper with the transparent adhesive (2). Next, the polyethylene film (4') coating the back side of this photographic paper is peeled off. Thereafter, the paper (pulp) (P) on the back side of the photographic paper is dissolved and removed using an alkaline solution. As a result, the photographic image (dye emulsion) (3) is placed on a transparent plastic plate (1) on the front side and a translucent milky white polyethylene film (4) on the back side.
), it becomes a fixed structure like a sandwich. This will be called A board. Prepare another A board. A method for producing a day/night photograph, which comprises stacking two A plates in the same direction and adhesively fixing the parts where the images on both plates completely coincide with each other with a transparent adhesive.