Picture plate using both transpiercing light and reflection light

This invention relates to a picture plate to be used indoor or outdoor for advertisment, display and decoration purposes. The picutre plate comprises of a semitransparent white plate (1) fitted in between the two identical pictures (2) which are matched completely. The picture (2) is affixed to one surface of the semitransparent white plate (1) either by itself, or with a transparent plastic plate (3). A composite picture plate thus formed is capable of exhibiting a clear picture either with the aid of transpiercing light (T) or reflection light (R).

BACKGROUND OF THE INVENTION 
1. Technical Field 
This invention is used for indoor and outdoor advertisement, display or 
decoration. It is concerned about a semitransparent white plastic plate 
fitted in between two identical pictures to form a composite picture 
plate. By matching the two pictures, the composite picture plate can 
exhibit a clear picture with the aid of either transpiercing light or 
reflection light or both. 
2. Background Art 
Before this invention, a typical picture plate available in the market uses 
positive films or is double-transfer printed from pictures of printed 
matter to a transparent plastic plate where a clear picture can be seen 
through illumination from the back side by the aid of transpiercing light. 
Without this illumination from its back side, the picture is too dark to 
be seen. Also, even when the illumination in the back is on, one can see 
almost nothing of the picture if the front part of the plate is exposed to 
bright light or the area immediately facing the front part of the picture 
plate is bright. Therefore, the hitherto picture plate can only visibly 
exhibit a picture at night time or inside a fairly lighted room. For this 
reason, it cannot be used in the bright outdoor. 
Another hitherto technique uses pictures printed on poster paper which is 
seen with the aid of front incident light, i.e., reflection light. This 
technique, however, cannot show a clear picture when transpiercing light 
is adapted because its color becomes thinner. 
Up to now, there is not any picture plate which can be adapted to indoor or 
outdoor uses that is capable of exhibiting a clear picture with the aid of 
both transpiercing light and reflection light. 
This invention solves the disadvantages of the hitherto picture plate which 
cannot use both transpiercing light and reflection light. By and large, 
this invention can be easily adapted indoor and outdoor and is capable of 
the dual use of artificial and/or natural light in exhibiting a clear 
picture, i.e., by using transpiercing light with the aid of an electrical 
illumination or by using reflection light with the aid of sunlight. 
DISCLOSURE OF INVENTION 
The reason why the hitherto technique can not use one picture plate that 
can use both transpiercing light and reflection light is that the picture 
exhibited by using the former requires twice as dense as the picture that 
is shown by using reflection light. For this reason, the picture which is 
of the right density and can be seen by using reflection light will be too 
thin and will fail to exhibit a clear picture if seen with transpiercing 
light. Reversely, the picture which is of the right density and can be 
seen by using transpiercing light will be too dense, making the picture 
too dark to be seen. Because of the mutual contradiction, the hitherto 
picture plate can not make use of both transpiercing light and reflection 
light by using only one picture plate. 
In order to use one picture plate with a dual capability of using both 
transpiercing and reflection lights, the picture of proper density which 
is clearly seen with the aid of reflection light must simultaneously 
satisfy the condition whereby the density of the picture seen with 
transpiercing light is twice the former. 
In this invention, a semitransparent white plastic plate is fitted in 
between two identical pictures. As a result, a clear picture of proper 
density can be seen with the aid of transpiercing light. When sunlight 
passes through the picture located on the outer side of the picture plate 
and hits the semitransparent white plastic plate, the same clear picture 
as what is printed on the paper can be seen. 
Presently, no picture plate available in the market can use both 
transpiercing light and reflection light. In contrast, this invention has 
the capacity of using both kinds of lights. The following are other 
salient characteristics of this invention: 
1. This invention is not affected by the location and time of use, i.e. 
whether or not the immediate surrounding is brightly lighted. 
2. With the use of only one picture plate, a clear picture can be seen by 
using reflection light in bright outdoor during daytime and a clearer and 
more impressive picture can be seen during night time by using 
transpiercing light. 
3. This invention can be positioned onto a glass window and a clear picture 
is visible from both inner and outer sides with the aid of reflection 
light or transpiercing light, regardless of the time of day. 
4. The weather-resisting property of the picture plate is high. 
5. The water resisting property of the picture plate is good.

MODES FOR CARRYING OUT THE INVENTION 
So that the manner in which the above recited features, advantages and 
objects of the present invention are attained can be understood in detail, 
more particular description of the invention, briefly summarized above, 
may be had by reference to the embodiments thereof which are illustrated 
in the appended drawings. 
Refer to FIG. 1 first which demonstrates the basic configuration of the 
present invention. As shown in FIG. 1, a semitransparent white plastic 
plate (1) is fitted in between two identical pictures (2) with the two 
pictures (2) matched each other completely. Suppose the density of each of 
the two identical pictures (2) is the same and is equal to C, a clear 
picture of proper density can be seen with the aid of transpiercing light 
(T), which passes through the inner side of the picture plate (I), the two 
pictures (2), and the outer side of the picture plate (O) to reach the eye 
(E) as the observer is looking through two sheets of identical pictures 
(2) whose total density is 2C. 
On the other hand, when reflection light (R) such as sunlight passes 
through the picture (2) located on the outer side of the picture plate (O) 
and hits the semitransparent white plastic plate (2), it bounces the light 
back to the eye (E), making the density of the picture equal to C, i.e., 
half the former value. Thus, the same clear picture as what is printed on 
the paper can be seen. 
By using this configuration, a single picture with two identical pictures 
(2) affixed to a semitransparent white plastic plate (1) can use both 
transpiercing light (T) and reflection light (R). Moreover, an even 
clearer picture can be seen with the aid of transpiercing light (T) than 
what is seen with reflection light (R). 
The following are different embodiments of this invention based on the 
basic configuration demonstrated in FIG. 1. The embodiments are treated in 
detail with reference to FIGS. 1 through 6. In all the drawings, identical 
numbers represent the same elements. 
First Embodiment 
FIG. 2 shows the first embodiment of the invention. It comprises of two 
identical positive films of a picture (2) and one semitransparent white 
plastic plate (1) that is fitted in between the two films and glued 
together with a transparent bonding agent (4) after matching them 
completely. Thus, a composite picture plate is formed that can use both 
transpiercing and reflection lights. The positive film can be the pigment 
emulsion layer of a photograph, which is obtained by removing the 
background paper from the photographic paper. Alternatively, an electronic 
photograph can also be used. 
Second Embodiment 
FIG. 3 shows the second embodiment of the present invention. In this 
embodiment, the picture (2) is transfer printed from printed matter. 
First, glue the pictured surface of the printed matter to a transparent 
plastic plate (3) by using a water-insoluble transparent bonding agent 
(4). After the bonding agent (4) has dried up, use hot water or caustic 
soda water solution to remove the paper pulp of the printed matter. By 
doing so, only the ink of picture (2) on the printed matter is left on the 
transparent plastic plate (3), to form an A-plate (A). 
A semitransparent white plastic plate (1) is then fitted in between the 
identical two A-plates (A). Use a transparent bonding agent (4) to glue 
them together with the two pictures (2) matched to each other completely. 
This composite picture plate thus formed can use both transpiercing and 
reflection lights. 
Third Embodiment 
The third embodiment of the invention, also demonstrated in FIG. 2, is a 
variation of the first embodiment. The positive film, as described in the 
first embodiment, is replaced by a printed matter that is transfer printed 
on the semitransparent white plastic plate (1). The transfer print method 
used here is the same as what is discussed in the preceding embodiment. 
The picture (2) on one side must match completely with the picture (2) on 
the opposite side of the semitransparent white plastic plate (1). 
Fourth Embodiment 
FIG. 4 shows the fourth embodiment of the invention. In this embodiment, 
the picture plate is constructed as follows. Print a picture (2) onto one 
side of a transparent plastic plate (3) to form a B-plate (B). The 
printing process can be done by offset, photogravure, screen process, ink 
jet, or electronic copy, whichever is desired. A semitransparent white 
plastic plate (1) is then fitted in between two B-plates (B), with both 
the clear plastic surfaces of the B-plates facing the same direction. 
Use a transparent bonding agent (4) to glue the two B-plates (B) and the 
semitransparent plate (1) together making sure that the two pictures (2) 
match completely. Thus, a picture plate is formed that can use both 
transpiercing and reflection lights. 
Fifth Embodiment 
The fifth embodiment of the present invention is demonstrated in FIG. 1. By 
using any printing process used in the fourth embodiment, print two 
identical pictures (2) on both front and back surfaces of one 
semitransparent white plastic plate (1) as shown generally in FIG. 1. If 
it is printed such that the two pictures (2) match completely, then a 
picture plate is formed that can use both transpiercing and reflection 
lights. 
Sixth Embodiment 
FIG. 5 shows the sixth embodiment of the invention. By using the same 
printing method described in the second embodiment, transfer print the 
picture (2) of printed matter to one transparent plastic plate (3) to make 
A-plate (A). Then, transfer print another identical picture (2) of printed 
matter to a semitransparent white plastic plate (1) to make C-plate (C). 
Glue the plates (A, C) together with a transparent bonding agent (4), 
seeing to it that the pictures (2) are matched completely. Thus, a picture 
plate is formed that can use both transpiercing and reflection lights. 
Seventh Embodiment 
FIG. 6 shows the seventh embodiment of the invention. By using the printing 
method described in the fourth embodiment, make a B-plate (B) by printing 
the desired picture (2) to a transparent plastic plate (3). Then make a 
D-plate (D) by printing the same identical picture (2) directly to a 
semitransparent white plastic plate (1). Match B-plate (B) and D-plate (D) 
completely and glue the two plates (B and D) together with a transparent 
bonding agent (4), seeing to it that the semitransparent white plastic 
plate (1) is fitted in between the pictures (2). Thus, a picture plate is 
formed that can use both transpiercing and reflection lights. 
The configuration of the picture plates described in the above embodiments 
generally resembles that in FIG. 1. Both the transparent plastic plate (3) 
and the transparent bonding agent (4) do not affect the function of the 
picture plate. 
A semitransparent bonding agent can be used to replace the commonly used 
semitransparent white plastic plate (1) as described in all the above 
embodiments. Alternately, white cloth or plastic coated cloth can also be 
used. 
To further improve its weather resisting characteristics, a completed 
picture plate can be pasted or coated with an ultraviolet-ray absorption 
film. 
As discussed above, this invention is not only capable of exhibiting a 
clear picture by using natural light shone on its front surface, i.e., 
reflection light, during daytime, but can also deliver the same result by 
illumination from its back surface, i.e., transpiercing light during night 
time. Therefore, it is most suitable for display, decoration, and 
advertisement both indoors and outdoors.