JPH04198977A - Method for expressing character and graphic on light transparent body by using metallic film - Google Patents

Abstract

PURPOSE:To express desired characters and graphics on the rear surface of a light transparent body by inscribing recessed parts of approximately the same depth in the parts on the rear surface of the light transparent body where the characters and graphics are desired to be expressed, then fixing metallic films onto the surfaces of the inscribed parts, covering the surface of the metallic films in the character and graphic parts with protective films and removing the metallic films in the exposed state to expose the base of the light transparent body. CONSTITUTION:The recessed parts 2 are inscribed on the desired parts of the characters and graphics to be expressed and the metallic films 3 are so fixed as to cover the character and graphic parts including at least the recessed parts 2 in the state of the recessed parts 2 at the surface characteristics thereof are transparent or translucent and that the modeling patterns from the fine satin to coarse wave forms are formed thereon. The metallic films 3 of the character and graphic parts including the metallic films 3 fixed in the recessed parts 2 are thereafter coated with single layer or plural layers of the protective films 4 which can function as a protective material from foreign matter, moistureproof material, metallic color adjusting material and/or insulating material. The excess metallic films 3 are removed to expose the base of the light transparent body. The desired characters and graphics are expressed in this way only by the metallic films even if the areas thereof are fine patterns.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is capable of forming characters or figures by carving a recessed part on the back surface of a transparent material such as glass, and fixing a metal film in the recessed part. Concerning how to express.

(Prior art) Conventionally, a concave portion is carved on the back side of a transparent body (light-transmitting body).
The method of fixing a metal film in the recessed portion was disclosed in Japanese Patent Application Laid-open No. 6
0-94400 Publication and Japanese Patent Publication No. 61-30920 (both filed by the same applicant as the present invention), the technical contents of which are summarized in terms of methods for protecting and removing metal films are as follows: In the case of A metal film is fixed thereon so as to cover the recessed portion, and a protective film is further applied. After that, by removing the masking, the excess metal film and protective film are removed together with the masking, but the necessary metal film and protective film remain in the recessed part at the same time, so the metal film in the recessed part is removed. A method is disclosed in which only the following are protected.

In addition, in the latter case, a metal film is fixed on the back side of a transparent body (light-transmitting body) with a concave part carved in it, and all the metal film other than the concave part is removed with a sharp knife, etc., and the metal film is only applied to the concave part. After leaving the metal film to remain, the metal film was protected at the same time by coloring adjacent areas of the metal film while functioning as an error absorbing section during coloring. That is, in order to protect the metal film, it was necessary to apply coloring. Also, there was no way to easily blur the colors.

In addition, as a method of expressing characters and figures on the back side of a transparent body (light-transmitting body), it was conventional to simply express them with paint, film, or metal film on a smooth surface, but it is also possible to express them three-dimensionally. , and there is no way to express it only with a metal film that diffusely reflects light, so it has been long awaited.

(Problems to be Solved by the Invention) However, the above methods each have the following problems.

b) When using masking, the adhesion force between the metal film, protective film, and masking is greater than the adhesion force between the transparent body (light-transmitting body) and the metal film, so when the masking is removed, the metal film is also removed. There was a problem in that it was damaged, which was a practical problem.

(Note) In the method of leaving a metal film only in the recesses and protecting the metal film at the same time as coloring, the coloring process itself does not require much precision, as can be seen from the fact that the metal film functions as an error absorbing part during coloring. It is not expensive (it is impossible to match the edge of the metal film with the colored edge, and in order to completely protect it from moisture, it is necessary to paint the surrounding area including the metal film). It must be filled in, and when viewed from the surface side, the surrounding area adjacent to the metal film is colored.Therefore, it is impossible to express characters or figures using only the metal film. The characteristics of being a translucent or transparent material could not be fully utilized, and as a result, its uses were extremely limited.

C) Also, although there are restrictions on the area and location of the metal film,
In order to make the most of its characteristics as a transparent material (translucent material),
Even if the metal film is protected by painting only on the metal film so that the color does not protrude into the adjacent peripheral areas other than the metal film, for the same reason as above, the edges of the metal film may be damaged due to insufficient moisture-proofing measures. There were quality problems in that deterioration occurred, the metal color turned black, and the reflective effect disappeared.

2) Since the thickness of the metal film is very thin, the brightness of the metal film seen from the front side changes depending on the brightness of the protective film applied on the back side, but it protects the metal film at the same time as coloring. Therefore, there was no choice in the brightness of the protective film, and therefore, it was not possible to control the brightness of the metal film.

e) The metal film that has settled in areas other than the recesses must be scraped off with a sharp knife, etc. If the blade length is long, the force will be dispersed and efficiency will be poor (If the blade length is short, it will get stuck in the recesses and should not remain) There was a problem that the metal film was scraped off.Also, using a sharp knife means that the transparent material (
This process required careful attention, as it could damage the transparent material and damage its value as a transparent material. (2) Metal powder from the shavings will inevitably remain in the area to be removed, and if you wipe it with a cloth, the metal film fixed in the recess will also come off, so it is impossible to wipe it off, and it is impossible to completely remove the metal film. It was nerve-wracking work.

f) In the conventional method, all the metal film other than the recessed parts is removed, so the metal film fixed on the flat parts other than the recessed parts cannot be used as a method of expression, and the method of expression has changed. There wasn't.

g) When applying coloring, the coloring material (agent) is naturally mixed and toned from various colors in order to produce the desired color, but only in certain specific colors (green, purple, etc.). etc.), the coloring material (agent) and the metal film come into direct contact, so the coloring material (agent) affects the metal film, causing the corresponding part of the metal film to turn black. There is a problem that the color changes and the reflective effect disappears, and there are restrictions on the colors that can be used, making it impossible to produce the desired color.

h) The above coloring agent must also have the function of protecting the metal film from moisture, and in order to achieve this purpose, it is necessary to use an organic solvent-based one in consideration of performance and workability. I needed to use it. However, coloring is a very detailed process, and since the work is done while bringing one's face close to the object being painted, the odor emitted from the surface is difficult to bear and poses health problems. Furthermore, although organic solvent-based products are commercially available, there are only a few basic colors (and when producing arts and crafts, it was very difficult to match the color to the creator's intended color.

) The coloring material (agent) applied on the metal film cannot be seen from the surface side, so even though the metal film part can act as an "error absorbing part during coloring," the coloring material (agent) is not moisture-proof. As far as functionality was concerned, there was a problem in that the edges of the metal film had to be painted over, and it could not serve as an ``error absorbing area during coloring'' in the true sense of the word.

N) The color is applied to the back side of the transparent body (translucent body), and when viewed from the front side, the first color is the final color,
Blurring the colors was an extremely difficult technique because the order of expression was reversed to the normal order, so overpainting made no sense at all.

(2) When using a reflective method, in which characters or figures are simply expressed using paint, film, or metal film on the smooth surface on the back of a transparent body, differences in color and reflectance of light may occur. Characters and figures are visible due to the difference between the There were times when it was very difficult to see.

As described above, the conventional method has had many problems to be solved, but the present invention can easily and reliably remove the metal film fixed in the recessed area from foreign matter and moisture without applying coloring. Our first priority is to express desired characters and figures on the back side of the translucent body using only a three-dimensionally structured metal film diffused reflection layer that can control the brightness by protecting it from the elements and ensuring quality. The purpose is to easily and reliably remove the excess metal film without damaging the base material of the translucent material, thereby maintaining its quality as a translucent material or transparent material and making use of its characteristics. In particular, in the case of transparent objects, the second purpose is to take advantage of their inherent characteristic of being able to be seen through, and also use metal films fixed on flat surfaces other than recessed areas as a method of expression. make it possible,
The third purpose is to add applicability to the expression method, and when coloring, the metal film covered with a protective film (hereinafter referred to as "metal film/protective film 1") is treated in the true sense. It functions as an "error absorption part during coloring", prevents discoloration of metal films caused by specific pigments, and removes restrictions on the color of coloring materials (agents). The fourth purpose is to eliminate the restrictions on the material of the coloring agent (agent), and the fourth purpose is to make it possible to easily blur the color during coloring and to improve production efficiency. Five objectives.

(Means and effects for solving the problem) In order to solve the above problem, in the present invention, first, a concave portion of approximately the same depth is carved in the desired portion of the back surface of the transparent body for the characters/figures to be expressed. Set up When engraved by the sandblasting method, the surface of the engraved part becomes a satin-like translucent state, and when engraved with an etching solution containing hydrofluoric acid as the main component, it maintains its transparency while maintaining its transparency. , from fine pear-like to rough wavy. In either case, the surface of the engraved portion forms a different pattern for each piece. After that, the character/character including at least the recessed part is
A metal film is fixed to cover the graphic part.

In the recess, the metal film is fixed on the wall surface and also adheres to the natural pattern formed when carving the recess, so it is no longer a mere reflective layer, but has a three-dimensional structure. This results in the formation of a diffusely reflective layer. Furthermore, if the surface is translucent, the surface will shine like oxidized silver, while if it remains transparent, almost all the light incident from the surface will be reflected. become. Therefore, due to the high reflectance of the metal film, the shaped pattern is further amplified and visually recognized. on the other hand,
The metal film fixed on the flat surface other than the concave portion forms a mirror-like specular reflection layer when the flat surface is smooth.

As described above, after fixing the metal film, the metal film of the characters/figures including the metal film fixed in the recesses can be coated with a material that protects from foreign objects, a moisture-proof material, a metal color adjustment material, and/or an insulating material. covered with a single or multiple layer protective film that can function as a For recessed areas, it is also possible to apply the protective material (agent) by imprinting it with a spatula-shaped object, so even if the area is small and minute, it is easy to apply the protective material only to the metal film inside the recessed area. I can do something. The metal film in the area covered with the protective film is protected from contact with foreign objects and moisture because the protective film has at least the minimum necessary functions as a protection material from foreign objects and a moisture barrier material. It turns out. Thereafter, the excess metal film that is left exposed without being coated with a protective film is removed to expose the base of the transparent body. Since the metal film on the area where the protective film is applied is protected from contact with foreign objects, it is possible to use soft materials such as cloth or felt. Gently rub and wipe off the entire metal film fixing area, including the metal film.

The metal film itself is very thin, and its adhesion to the transparent material is weak, so the excess metal film is easily removed, leaving only the metal film in the areas covered with the protective film, leaving the recessed area. In the case of a flat part, desired characters and figures are realized by a diffuse reflection layer with a three-dimensional structure, and by a mere specular reflection layer in the case where the surface is smooth.

By removing the excess metal film using the method described above, the base of the transparent material is exposed in the removed area, allowing light to pass through it, or allowing it to be seen through if a transparent material is used. Become. Moreover, since it is now possible to use a soft material, there is no damage to the base of the translucent material, and it is also possible to remove the unnecessary metal film by concentrating on a certain area. There is nothing left. Further, the portion where the metal film remains is the portion covered with the protective film, and conversely, the portion of the metal film is always covered with the protective film. That is, the metal film part and the protective film part completely overlap each other, and even the edges of the metal film are completely protected from moisture.
If you look at it from the surface side, you won't be able to see any extra paint film other than the metal film.

Further, the thickness of the metal film is very thin, and the thinner it is, the more the brightness of the metal film changes because it is influenced by the brightness of the protective film applied on the back side. Therefore, the brightness of the metal film seen from the surface side can be controlled within a certain range by selecting the brightness when applying the protective film.

Furthermore, when applying coloring, the purpose of coloring is to apply it to the exposed part of the transparent body, but in areas where the end of the part to be colored is adjacent to the protective film, the coloring material (agent) is applied to the protective film. Even if the protective film is applied on top of the metal film and the coloring material (agent)
Since it does not come into direct contact with the metal film, the coloring material (agent) does not affect the metal film, and restrictions on the color (pigment) of the coloring material (agent) are lifted. Further, since the protective film has a moisture-proofing function, there is no need to require the coloring material (agent) to have this function, and therefore, there are no restrictions on the material of the coloring material (agent).

As mentioned above, the protective film acts as an insulating material and a moisture barrier, and the metal film/protective film part is blocked from seeing through from the surface side, and the coloring material (agent) is placed on the protective film. The reason is that even if it is applied, it cannot be seen from the surface side.
The metal film/protective film portion having a predetermined width functions as an error absorbing portion during coloring.

Furthermore, if the etching resist is applied using a screen printing technique, the same pattern of concave portions will be etched in all the same positions.

Therefore, in each of the subsequent steps, the desired plate is photoengraved based on the basic original used when applying the etching resist, thereby applying the metal film protective material (agent), the coloring material (agent), and Screen printing techniques can be used in all subsequent steps, such as applying the secondary colorant. That is,
This means that the necessary coating film can be applied only to the necessary parts, and the finer the pattern, the more effective it becomes, and the work in each process becomes much easier. Furthermore, when applying a coloring material (agent), it is possible to easily blur the color by making full use of gradation techniques using halftone dots or printing ink.

(Examples) Hereinafter, some embodiments of the present invention will be described based on the drawings.

The material used for the light-transmitting body is not particularly limited, such as glass or synthetic resin plate, but considering the purpose, application, production process, etc. of the present invention, it is preferable to use glass with excellent weather resistance, surface hardness, transparency, etc. seems to be the best. In addition to regular plate glass, there are crystal glass, white glass, colored glass, translucent glass, low-reflection glass, non-reflection glass,
Patterned glass, nostalgic glass, lump glass, etc. are not particularly limited in terms of their composition, manufacturing method, shape, surface treatment method, etc., and any glass can be used as long as it satisfies the condition of transmitting light. By taking advantage of these characteristics depending on the product and the intended use, it is possible to provide more effective final products.

First, as shown in FIGS. 1 and 2, recesses 2 having approximately the same depth are carved. There is also a method of using a rotating tool etc.
Since it requires advanced technology and cannot be mass-produced, it cannot be said to be very practical, and it is preferable to use a sandblasting method, a method using an etching solution, or a combination of these methods.

In the case of sandblasting, the surface of the engraved portion changes from a fine satin-like texture to a rough satin-like finish by selecting the roughness of the diamond sand particles. Then, the carved portion becomes translucent.

In order to make the engraved portion transparent, it is preferable to use a method using an etching liquid. First, the back surface 1 of the glass is covered with an etching resist, so that only desired portions of the glass substrate are exposed. The material of the etching resist is not particularly limited as long as it can withstand hydrofluoric acid, but for example, wax, asphalt, synthetic resin, carbon, or a composition thereof may be used. Alternatively, a sheet-like film or the like may be used. It is best to use these materials as shown below, depending on production volume and processing method.

If the production volume is small, wax is used and the desired area of the wax is scraped off to expose the base of the translucent body.

For mass production, or when the pattern to be engraved is particularly fine (and precision is required), it is recommended to apply by screen printing. is used, but there is no particular limitation as long as it can be screen printed.

As described above, only the desired portion of the glass substrate is exposed, and the exposed portion is either immersed in the etching liquid or placed in an etching liquid bath layer so as to completely cover the exposed portion. Then, the recessed portion 2 is carved only in the exposed portion of the glass base. An etching liquid containing hydrofluoric acid as a main component is used, and depending on the case, it may be mixed with sulfuric acid or the like, or various additives may be added. The surface quality of the engraved area changes depending on various conditions such as the engraving time and the concentration and amount of the etching solution.If the concentration is low, the amount is small, and the time is short, it will become dense and finely satin-like, and in the opposite case, it will become a fine satin finish. It becomes rough and sharply wavy (see Figure 3). Furthermore, even under the same conditions, the molding patterns occur naturally and are slightly different.

By using the sandblasting method and the method using an etching liquid in combination, it is possible to change the surface of the engraved part from a semitransparent state due to the sandblasting to a transparent state.

After that, the etching resist is removed and washed. Next, as shown in FIGS. 4 and 5, the metal film 3 is fixed so as to cover the characters and figures including at least a part of the recessed part 2. The metal film 3 can be formed by coating gold, vacuum-depositing metals such as aluminum, chromium, nickel, or alloys thereof, or by applying a solution of silver such as silver nitrate and a reducing solution consisting of glucose or sucrose to the glass. There is a method in which silver is deposited and fixed by pouring it onto the back surface 1 at the same time and moving the liquid so that the desired area is covered with the metal film 3 everywhere. In the latter case, the glass may be primed with tin chloride to make it easier for the silver to adhere to the glass, or it may be removed after the silver is fixed, as is the case with many industrially produced mirrors. It's okay.

In addition, as shown in FIGS. 4 and 5, if the metal film 3 is not fixed on a part of the recessed part 2 and is left engraved, the metal film 3 should be removed before fixing it. It is preferable to cover the portion with masking, or to remove the metal film 3 fixed to the recessed portion 2 after fixing the metal film. That part becomes a mere engraved part and can be used as a method of expression by etching.

Thereafter, as shown in the same figure, at least the characters and figures including the metal film 3 fixed in the recessed part 2 are covered with a protective film 4. The protective film 4 may be a vine that simultaneously has the necessary functions of a protection material from foreign substances, a moisture proof material, a metal color adjustment material, or an insulating material, taking into account the subsequent steps, Alternatively, a plurality of layers may be stacked to satisfy each function individually. As an example of the latter, for example, it has already been mentioned that silver may be fixed on the rear body, but in that case, copper is superior in that it does not change the quality of silver, and is a good insulating material. Although it has the function, it does not have the function of protecting from contact with foreign objects or moisture-proofing function, so in order to compensate for these functions, it is necessary to protect it with another material.

However, the former is more advantageous in terms of workability and economy. Various materials can be used for the material, and the material is not particularly limited, but in the present invention, as a result of various experiments, it has been confirmed that an achromatic epoxy resin satisfactorily fulfills its function.

When adjusting the brightness of the metal film 3, the brightness of the protective film 4 may be selected. For example, if you want a bright metal color with a whitish tint, use white, and conversely, if you want a deep black metal color, use black, and so on.The brightness of the metal film 3 can be controlled very easily. I can do it.

The method of coating is also not particularly limited, but there are two methods below.

The first method is to apply with a brush, brush, spatula, etc. If the area is large, it is sufficient to simply apply it with a brush or brush, regardless of whether it is a concave part 2 or a flat part.
In the case of particularly small concave portions 2, by applying the protective material (agent) 4 by imprinting it on the concave portions 2 with a spatula-like object, the protective film 4 will remain only in the concave portions 2. No matter how fine the pattern of characters or figures expressed by the concave portions 2 is, the protective film 4 can be easily and reliably applied onto the metal film 3 to remain.

The second method is to use screen printing. If the screen printing method is used when applying the etching resist, which is the first step of the present invention, the same method can also be used when applying the protective film 4. First, by using a plate in which the positive and negative relationship of the plate used when applying the etching resist was reversed, the areas where the etching resist was not applied, that is, the areas where the recessed portions 2 were carved, were coated. It is possible to apply the protective film 4 only to the surface. In addition, when applying to flat parts other than the recessed part 2 at the same time,
This is possible by creating the desired plate during platemaking, but
It is not necessarily necessary to apply the coating to the concave portion 2 and the flat portion at the same time.

It should be noted that even if the protective film 4 is applied after the metal film 3 to be removed is roughly removed, there will be no difference in its function or effect.

As mentioned above, the coating of the protective film 4 is about how efficiently (coating it on the metal film 3 that should remain), and the best method should be selected based on the fineness of the desired pattern, the area to be coated, and the production volume. Bye.

After that, as shown in FIGS. 6 and 7, unnecessary metal film 3 is removed.
That is, the exposed metal film 3 without the protective film 4 applied thereto is removed. The method is not particularly limited, and it is possible to use a sharp knife with care, but it is better to use a soft material such as cloth or felt to avoid scratching the glass. None. In particular, if the protective film 4 is applied only to the concave part 2, there will be no problem as long as the cutter does not get stuck in the concave part 2, but as shown in FIGS. If the metal film 3 is to remain, use a soft material to cover the protective film 4.
It is safer to remove the entire metal film fixing part, including the metal film, by gently rubbing it.

It is more effective to use chemicals or abrasives to remove the metal film 3. The material of the abrasive is not particularly limited as long as it does not scratch the glass, but if cerium oxide or the like, which is used in manufacturing polished glass, is used, there is no risk of scratching the glass. Furthermore, if an abrasive is used, even if some coating remains on the metal film 3 to be removed when applying the protective film 4 in the previous step, the metal film 3 can be scraped off at the same time. The coating film can also be scraped off, and this method is particularly effective when the protective material (agent) 4 is rubbed into the recessed portion 2 using a spatula-shaped object.

As described above, the purpose of expressing characters and figures only with the metal film 3 is achieved to a certain degree, but if necessary, the exposed portion of the substrate on the back surface 1 of the glass may be colored 5. An example thereof will be described below.

First, in order to improve the adhesion of the coloring material (agent) 5, the colored portion may be subjected to a brimer treatment. The processing agent includes silane, butyral, etc., but is not particularly limited. After that, Figures 6 and 7
As shown in the figure, a predetermined portion is colored 5. Coloring material (
There are no restrictions on the color, components, or materials of agent) 5, and paints, fluorescent paints, phosphorescent paints, translucent paints, various paints, water-soluble paints, lacquer, films, metal foils, or temperature-sensitive paints or temperature-sensitive films can be used. etc., everything can be used. Also, if you mix mica powder or the same powder coated with titanium dioxide with the above paints or paints, you can get an iridescent shine like a pearl, a rainbow-like coloring, or add depth to the color. I can do it. In addition, if fine powder or -scaly stainless steel powder is mixed in, it will reflect light and have a sparkling effect.As for the application method, you can use a brush or a brush, of course, and apply a protective film 4. In the same way as when applying the etching resist by the screen printing method, the same method can be used in the same manner for coloring, and the desired coloring material (agent) 5 can be applied to the desired area. , colors can be easily blurred by using halftone dots or gradation technology that prints while mixing multiple colored coloring materials (agents) 5 on a screen plate (gauge). May be used.

Finally, after coloring is completed, only the colored portion or the entire back surface including the colored portion may be subjected to secondary coloring with the same color (transparent color may be used depending on the case). The material and application method are the same as those used for primary coloring, but by applying secondary coloring, the back side of the product becomes mottled with multiple colors, which is very unsightly and could damage the product value. When painting with a color with low hiding power, only that part will transmit light, or variations in the amount of paint will be visible as uneven color, which will be unsightly. This has the effect of compensating for the lack of hardness of the coating film and increasing its durability.

Further, a film may be attached to the back surface 1 of the glass, if necessary. This film protects the entire back surface 1 of the glass including the coating film from foreign substances, and depending on the type, the exposed part of the base can be made into colored glass or semi-transparent glass, or
It has the effect of being covered with paint. Furthermore, even if the glass were to break, it would serve to prevent shattering, ensuring safety and widening the range of uses. Also, instead of using paint or film, attaching glass can also be effective in protecting the back side.

Although some typical embodiments of the present invention have been described above, the present invention does not require the use of any special equipment or equipment in carrying out the invention (although it does not require the use of any special equipment or instruments). Although one of the features is that the entire process can be completed with just one step, it should be noted at the end that the present invention is not limited to these embodiments as long as this is in keeping with the gist of the present invention.

(Example of use) The product of the present invention manufactured by the method described above can be used as a display item such as a signboard or information board, or as a mirror, furniture, fittings, etc.
Building materials such as wall coverings, lighting equipment, clocks, thermometers,
It is used as ornaments and accessories such as ornaments and arts and crafts, and the technology can also be applied to glass tableware, various containers, fixtures and fittings such as ashtrays, and windows of various vehicles.

(Application Examples) Furthermore, some typical application examples of the product of the present invention will be introduced.

The product of the present invention is processed on the back side 1 of the transparent body and viewed from the front side, but it is not only possible to simply appreciate the product of the present invention, but also to allow light to pass through or use a transparent material. There are several ways to use it, taking advantage of the ability to see through it.

b) The effects of the present invention can be further enhanced by installing a picture, screen, etc. behind the present invention so that it can be seen through the see-through section to effectively create a scene behind the invention.

In this case, it is more effective to leave an appropriate distance between the product of the present invention and the object installed behind it. Further, in that case, using a film-like light control liquid crystal sheet has the following effects.

The light control liquid crystal sheet changes transparent to opaque and vice versa instantaneously electrically, so by turning on or off electricity, it is possible to block the transparent view or return to the transparent state again. . Therefore, when a dimming liquid crystal sheet is attached to the front (surface) of the product of the present invention, both the product of the present invention and the objects installed behind it become visible and hidden at the same time. However, when the same sheet is pasted on the back (back side) of the product of the present invention, it has the effect that only the installed objects behind it are visible or hidden.

(Example) When a plurality of transparent bodies, at least one of which contains the product of the present invention, are laminated, the following effects can be obtained. When two or more products of the present invention are placed in the same direction, three-dimensional expression is possible, and when they are placed in different directions, they can be viewed from each side. Then, you can freely combine their quantity, direction, and whether or not they are the products of the present invention. When stacked and made into a block, it can be used as an object, and if the surface is cut and light refraction is applied, depending on the direction and angle of view, the letters and figures in the stack, or parts of them, can appear or disappear.
It can also create a magic-like effect where only one item appears to be multiple.

c) Attach the photographing device and sensor to the back of the product of the present invention, make only the lens part and the laser beam receiving and transmitting part transparent so that they can function, and hide the device part with color so that it cannot be seen from the front side. I can do it.

In the past, machinery and equipment were exposed, detracting from the aesthetics of the environment, but in this application example, they are hidden, so they do not impair the aesthetics of the environment, and on the contrary, the product itself becomes an element of artistic decoration. Because of this, it can attract people's attention.

2) Originally, the product of the present invention was intended to be appreciated by light entering from the surface side of the translucent body, but if a translucent coloring material (agent) 5 or film is used during coloring, It is also possible to view it by letting light pass through it, creating an effect similar to that of stained glass. Therefore, by installing the product of the present invention in a place where the brightness is reversed between the front and back, such as a window,
You can enjoy both ways of viewing. When viewed as stained glass, the metal film/protective film portion of the product of the present invention acts as a molding portion of the stained glass.

e) When light is irradiated from the end cross section 7 of the light-transmitting body of the present invention, the effect is further doubled. The irradiated light passes through the thickness of the transparent body, creating a state as if the light was contained within the transparent body. The light irradiates the colored surface 5 and the metal film 3 on the flat surface, and in the recessed portion 2, a phenomenon appears as if the wall surface 6 of the recessed portion emits light, and the corresponding portion shines. Furthermore, in the part where the metal film 3 is fixed in the recessed part 2, its high reflection effect increases the shine even more, and since it is a diffused reflection layer, an unprecedented shine appears,
The features of the product of the present invention are most effectively exhibited. When coloring 5 is applied, the reflected light brightly illuminates the surrounding area of the metal film, making the colors more vivid and creating an effect where only the expressed object stands out. The effect is particularly noticeable when placed in a dark place.

The device is effective if the light is irradiated only to the cross section 7 of the light-transmitting body of the present invention, and the light is prevented from leaking to other parts as much as possible. It is a good idea to incorporate a light source into the seed part or inside the pillars of the partition wall.

Although the light source differs depending on where it is installed, a tubular illumination method may be installed parallel to the butt end section 7 and irradiated directly, or an optical fiber may be used to send light between the light source and the butt end section 7. . In the latter case, the light source is not particularly limited.

Furthermore, if a colored sheet is attached between the light source and the butt end section 7, colored lighting can be obtained. Furthermore, it is possible to change the color by using color sheets of multiple colors and rotating the color sheets so that the colors change, or by rotating the light source to which the color sheets are attached. In addition, using an ultraviolet fluorescent lamp such as a black light as a light source,
If fluorescent paint is applied to the colored part on the back side 1 of the product of the present invention,
It is possible to create a trick effect in which the lighting is not visible and only the fluorescent paint emits light.

f) If a phosphorescent paint is used as the coloring material (agent) 5, it can be used as an emergency guide light during a power outage. By applying luminous paint, it not only glows in the dark, but also illuminates the surrounding area. On the other hand, since the metal film 3 fixed in the recessed part 2 has a three-dimensional structure, its wall surface part 6 easily blocks the irradiated light (characters and figures expressed by the metal film diffuse reflection layer do not receive it). By reflecting the light that has been stopped, it is possible to increase the effectiveness of emergency guidance lights even in darkness.In addition, these guidance lights must be prepared for emergencies, and for that reason, conventionally, batteries (including rechargeable ones) ), but by using the product of this invention, these devices are no longer necessary and costs can be reduced.Furthermore, phosphorescent paint deteriorates compared to other paints when exposed to ultraviolet rays or the atmosphere. However, in the present invention, it is applied to the back side 1 of the transparent material, and after application, it is necessary to apply secondary coloring. Or, by pasting a film on it, it is completely shielded from the atmosphere, preventing deterioration and maintaining its functionality for a long period of time.

Although typical application examples of the product of the present invention have been introduced above, the present invention is not limited to these examples, and various other applications that take advantage of the characteristics of the product of the present invention can be considered.

(Effects of the Invention) Now, the effects of the present invention will be described below. First, since the metal film portion and the protective film portion completely overlap each other, even the ends of the metal film portion are completely protected from moisture and are stable. In addition to being able to provide high-quality products, when viewed from the surface side, no extra paint film is visible other than the metal film, even if the area is a small fine pattern. They have succeeded in expressing desired characters and figures using only metal films.

The metal film is also fixed on the wall surface of the recessed part, and the surface of the metal film fixed part forms a fine satin-like to rough wavy pattern, so when viewed from the surface side, only that part is visible. The result is a three-dimensionally structured diffuse reflection layer that exhibits reflective properties different from those of the . Furthermore, when it is made translucent, it develops a shine similar to oxidized silver, and when it is kept transparent, it exhibits the high reflective performance of a metal film, making the pattern more amplified and visible, making the metal film more visible. Characters and figures expressed in the diffused reflection layer stand out. Originally, incident light is diffusely reflected and that light enters the visual field to recognize the existence of an object.Compared to the conventional method of simply expressing it with paint, film, or metal film on a smooth surface, The characters and figures expressed by the method of the present invention are structured three-dimensionally and also have the element of diffused reflection, so their visual appeal is greatly improved and they can be easily recognized even in low lighting conditions. , restrictions on angle and illuminance have also been relaxed.

In addition, since the natural patterns created when engraving the concave portions are slightly different, the reflective properties of the metal film fixed on the recesses are also unique, giving the element of a one-of-a-kind product. Become. Therefore, unlike general industrial products, each piece has its own value,
This tendency is particularly noticeable when engraving is done with an etching liquid.

Furthermore, since it is possible to select the brightness of the protective film,
The brightness of the metal film can be controlled, and the metal film can be used more effectively depending on the application, purpose, and location of use.

On the other hand, since it is now possible to use a soft material to remove unnecessary metal films, metal powder from shavings no longer remains in the areas that need to be removed, and the parts covered with the protective film can be removed. By gently rubbing and wiping the entire part containing the metal film, it is now possible to easily and reliably remove the excess metal film without using any nerves. Since there is no need to worry about damaging the base of the light body, the quality of the light-transmitting body or transparent body is maintained, and these characteristics are successfully utilized.Especially,
When a transparent body is used, there is nothing to obstruct perspective other than the letters and figures expressed in the metal film, so it can be used in areas that require perspective or where it would be more effective to see through. By effectively displaying the back of the transparent body, it was also possible to create the effect that only the letters and figures expressed by the metal film on the front surface stood out. In addition, by stacking layers, it became possible to create three-dimensional expressions, and by applying light refraction, it became possible to create magical effects. By installing a photographing device, a sensor, etc. in the back, it is possible to preserve the environmental aesthetics without interfering with its functions.Furthermore, by irradiating light from the cross section of the wood end, an unprecedented shine is produced and the effect of the present invention is enhanced. By further amplifying, etc., we take full advantage of the characteristics of light-transmitting and transparent materials,
We have succeeded in expanding its range of applications.

Furthermore, by adopting the structure according to the present invention, it is now possible to leave a metal film in a desired pattern at a desired location even on a flat surface other than the recessed portion. When the flat part is smooth, the metal film becomes a mirror-like specular reflection layer, so it has a different effect in comparison with the diffuse reflection layer in the recessed part, and if used effectively, it can be used as an accent. On the other hand, by not fixing the metal film on a part of the recessed part and keeping the state as it was when the recessed part was carved, that part is not simply etched. It can be used as a method of expression, and the method of expression can be varied.

Furthermore, when applying coloring, there are the following effects.

First, since the protective film has an insulating function, the coloring material (agent) does not come into direct contact with the metal film (therefore, there is no need to worry about any negative effects on the metal film).

Therefore, there are no restrictions on the color (pigment) of the coloring material (agent), and the expressive power of coloring has become richer, such as by freely mixing all colors to create the color of your choice.

Furthermore, since the coloring material (agent) is not intended to protect the metal film from moisture, it is free from any restrictions on the material. In other words, it is now possible to use water-soluble paints, which not only frees us from the bad odor and health problems caused by organic solvents, but also allows us to use them as painting materials, whereas conventional organic solvent-based paints have fewer basic colors and are difficult to match. The number of colors available on the market is much larger, and color matching has become much easier.

Furthermore, for the same reason, translucent coloring materials, films, fluorescent paints, phosphorescent paints, etc. can now be used with confidence. As a result, its range of applications has expanded, such as being able to double as stained glass, emitting ultraviolet light from the cross section of the wood to create a trick effect, and even being used as an emergency guide light.

Then, the coloring of the parts adjacent to the metal film/protective film part is as follows:
Since the metal film/protective film part with a predetermined width clearly functions as an "error absorption part during coloring" in the original sense, it facilitates positioning during hand engraving coloring work and screen printing, etc. Regardless of the method used, each step after the coloring step has become much easier.

Furthermore, by using the screen printing technique when applying the etching resist, the following effects can be obtained.

First, as already mentioned in the Example section, "When wax is used as an etching resist" which is an example of the present invention.
In comparison, conventionally, an original is placed face down under a transparent material, light is transmitted from below, and an etching resist such as wax applied to the back of the transparent material is traced over the original. However, since there is a distance equal to the thickness of the transparent material between the surface coated with etching resist and the original, the greater the thickness of the transparent material, the greater the error between the traced trajectory and the original. Therefore, it required a great deal of skill to accurately represent the pattern of the original manuscript, and to represent the characters and other elements in a neat and neat manner when viewed from the back. On the other hand, if a thin product is used, the finished product will lack a sense of solidity, and at the same time, thin products are limited in size due to strength, making it difficult to provide products with a large area. I couldn't do it. Furthermore, although it was possible to use plate-shaped products, it was impossible to apply the same method to block-shaped products.

However, by using screen printing techniques using photolithography, it is possible to produce a plate that shows the back side of a normal original, and it is possible to print the original correctly and accurately regardless of the thickness or shape of the transparent material. You can now draw street patterns. Furthermore, it has become possible to express minute details of about 0.1 millimeter, which is considered the limit of screen printing, and it has become possible to handle extremely detailed designs such as pen drawings and drawings that were impossible with conventional methods. .

In addition, since the same pattern of recesses are carved in all the same positions, it is now possible to use screen printing techniques in all subsequent steps.

First, by using the same technique when applying the protective film, it is possible to apply the protective film only to the necessary areas, regardless of whether it is a recessed or flat surface, making it extremely efficient to protect and remove metal films. Now I can do it. Moreover, as above,
Needless to say, since it can handle very fine patterns, the specular reflection layer of the metal film remaining on the flat surface allows for finer expression.

In addition, not only has it become possible to use the same technique when applying coloring, but by making full use of its applied technology,
Colors can now be easily blurred, and objects that could only be expressed in a flat manner can now be expressed more realistically.

Finally, it goes without saying that the same technique can also be used for secondary coloring.

As mentioned above, by using the screen printing technique in the first process, the same technique and its applied technology can be used in all subsequent processes, and overall production efficiency has been greatly improved.

As described above, the present invention allows the entire process to be completed with simple tools without using any special machines or equipment, and furthermore,
It provides a method with rich expressiveness while making the most of the characteristics of translucent materials and transparent materials, and at the same time makes it possible to efficiently produce products of stable quality. The invention is extremely useful with a wide range of applications.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a state in which a concave portion is carved on the back surface of a transparent body according to the present invention. FIG. 2 is a sectional view taken along the line AA' in FIG. FIG. 3 is an enlarged cross-sectional view of the recessed portion of the present invention. FIG. 4 is a perspective view showing a state in which a metal film is fixed to a necessary part of the present invention and a protective film is applied. FIG. 5 is a sectional view taken along line BB' in FIG. FIG. 6 is a perspective view of the present invention after removing the excess metal film and applying coloring. FIG. 7 is a sectional view taken along line cc' in FIG. 6. 1... Back surface of transparent body (glass) 2... Recessed part 3... Metal film 4... Protective film (protective material) 5... Coloring material 6... Recessed part wall surface 7...・Cross section of the end of the translucent body

Claims (1)

[Claims] 1. A recess (2) of approximately the same depth is carved on the back surface (1) of the transparent body, and a metal film (3) is fixed in the recess (2),
In the method of protecting the metal film (3), first, a recess (2) is carved in a desired part of the character or figure to be expressed, and the surface texture of the recess (2) is made transparent or semi-transparent. In addition, the metal film (3) is fixed so as to cover at least the character/graphic portion including the recessed portion (2) under the condition in which a pattern ranging from a fine satin finish to a rough wavy pattern is formed, and then, the metal film (3) is fixed to cover the character/figure portion including the recessed portion (2). (
2) The metal film (3) of the character/graphic portion containing the metal film (3) fixed therein is coated with a single layer or It is covered with multiple layers of protective film (4), and then the excess metal film (3) is removed to expose the base of the transparent body.
characterized in that at least the characters and figures expressed in the above steps are visible from the surface side of the transparent body;
Method of expressing characters and figures on a transparent body using metal film (3). 2. The method according to claim 1, wherein a part of the recess (2) has a portion where the metal film (3) is not fixed and the state at the time of carving of the recess (2) is maintained as it is. 3. Coloring (5 ) The method according to claim 1 or 2, which comprises performing the following steps. 4. When carving the recessed part (2), apply an etching resist to the back surface (1) of the transparent body excluding the part to be engraved using a screen printing method, and carve the recessed part (2) in the exposed part of the base of the transparent body.
2) The method according to any one of claims 1 to 3, which comprises engraving.