JP2002346774A - Method for forming engraved character on cosmetic container and method for forming engraved character on mirror with laser beam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for forming an engraved character on a cosmetic container and a method for forming an engraved character on a mirror by a laser beam, by working out contrivance to secure engraving accuracy and engraving depth of the engraved character from the view point of the management. SOLUTION: In the method for forming the engraved character on a surface raw material, layer constituting a part of the cosmetic container which is placed with a a nickel-rhodium plating 5 for laminating nickel layer 3 and a rhodium layer 4, using a laser beam, the method includes an output confirmation process in which the engraving of the character is started after confirming that a laser oscillator is preliminarily operated and a stable laser output is secured, and a depth adjustment process in which the deepest part of the engraved characters passes through the rhodium layer and stayes at the position of the nickel layer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming an engraved character on a cosmetic container using a laser and a method for forming an engraved character on a mirror. More specifically, a container made of a material such as a bronze or brass material with a plating layer applied to the surface thereof, for example, for a cosmetic container such as a compact, or a mirror used together with a compact, in a predetermined position. Various types of data such as the name and birthday of the owner are engraved using a laser in the form of letters, symbols, numbers, logos, etc. (in this specification, these are represented as "engraved characters"). Related to technology.

[0002]

2. Description of the Related Art In general, a cosmetic container or a mirror using a laser (hereinafter, a representative example will be described using an example of a "cosmetic container").
In order to form an engraved character on a laser beam, a laser emitted from a laser oscillator (an example of a typical laser oscillator is shown in FIG. 2) is used.
AG lasers, CO2 lasers, semiconductor lasers and the like are known. Among them, the use of a YAG laser is particularly effective for metal cosmetic containers or mirrors.

[0003] Usually, in order to make the surface of a surface material layer made of copper or the like constituting a part of the container have a glossy color close to silver, plating is performed from the viewpoint of protection and decoration of the surface material layer. The plating layer is generally nickel-rhodium plating in which a nickel layer and a rhodium layer are stacked in this order from the bottom. Conventionally, engraved characters have been formed on the nickel-rhodium plated cosmetic container by using a YAG laser. However, in forming the engraved characters, the engraved characters can be formed without corroding the surface material layer. There has been a demand for the establishment of a technique for stably and efficiently forming engraved characters without making the characters unclear, but up to now, the establishment of the technique has been insufficient.

[0004]

First, from the viewpoint of management of the engraving accuracy of the engraved character, the engraved character by the laser is a small dot engraved (diameter of 2 to 1) as shown in FIGS.
It is composed of an aggregate of about 0 μ and depth of about 2 to 10 μ). When the precision of the engraving of the engraved characters is measured with a microscope capable of measuring the dot engraving in units of 0.01 μ, the initial operation of the laser oscillator is started. However, there is a problem in that the laser output tends to vary, which makes the marking accuracy of the marking characters non-uniform and the marking characters tend to be unclear.

[0005] Next, from the viewpoint of management of the engraving depth of the engraved character, when the deepest part of the engraved character reaches the surface material layer (tan copper layer) constituting a part of the container material, the copper bronze layer is exposed to outside air. If the stamped letters remain deep in the rhodium layer, the engraved letters will be shallower and the engraved letters will be unclear if they come in contact with the bare parts. There was a point. Also, in the case of a mirror, in a situation where the entire surface is a reflective mirror surface when viewed from the glass surface side, without forming irregularities on the surface of the reflective mirror surface, in a watermark form from the back side of the reflective mirror surface. By forming engraved letters, it can be tailored to a mysterious product.

[0006] The present invention provides a method of forming an engraved character on a cosmetic container using a laser and an engraved character on a mirror by devising a device from the aspect of managing the engraving accuracy and the aspect of managing the engraved depth of the engraved character. It is an object of the present invention to solve all the above-mentioned problems by providing a method of forming the above.

[0007]

Means for Solving the Problems To achieve the above object of the present invention, a first aspect of the present invention is to provide nickel-rhodium plating for laminating a nickel layer and a rhodium layer on a surface material layer constituting a part of a cosmetic container. In the method of forming an engraved character using a laser from the nickel-rhodium plated surface side, the laser oscillator was preliminarily operated to confirm that a stable laser output was secured, and then engraved the engraved character A method of forming an engraved character on a cosmetic container by using a laser, comprising: a power confirmation step of starting the engraving and a depth adjusting step of causing the deepest part of the engraved character to pass through the rhodium layer and stay at the position of the nickel layer. It is.

According to a second aspect of the present invention, there is provided a method for forming an engraved character on a silver mirror obtained by laminating a silver-coated layer, a copper-coated layer and a protective coating on a glass layer using a laser from a protective coating forming surface side. Preliminary operation of the laser oscillator, confirming that a stable laser output is secured, and then starting the process of engraving the engraved character.The deepest part of the engraved character is protected by a protective coating, copper-coated layer, and silver-coated layer. This is a method of forming an engraved character on a mirror by using a laser, which includes a depth adjustment step of passing through and remaining at the position of the boundary surface between the silvered layer and the glass layer.

A third aspect of the present invention is a method for forming an engraved character by using a laser from a protective coating forming surface side on an aluminum pulling mirror in which an aluminum layer and a protective coating are laminated on a glass layer. After confirming that stable laser output is ensured by driving, the output confirmation process to start engraving of engraved characters, and the deepest part of engraved characters pass through protective coating, aluminum layer, aluminum layer and glass layer A method of forming an engraved character on a mirror by using a laser, wherein the method includes a depth adjusting step of maintaining the position of the stamp at a boundary surface of the mirror.

According to a fourth aspect of the present invention, there is provided a method for forming an engraved character by using a laser from a protective coating forming surface side on a silver drawing mirror in which a silver coating layer, a copper coating layer and a protective coating are laminated on a glass layer. Preliminary operation of the laser oscillator, confirming that a stable laser output is secured, and then starting the process of engraving the engraved character.The deepest part of the engraved character is protected by a protective coating, copper-coated layer, and silver-coated layer. This is a method of forming an engraved character on a mirror by using a laser, which includes a depth adjusting step of passing through and staying at the position of the glass layer.

According to a fifth aspect of the present invention, there is provided a method for forming an engraved character by using a laser from a protective coating forming surface side on an aluminum pulling mirror in which a glass layer, an aluminum layer and a protective coating are laminated. After confirming that a stable laser output is ensured by driving, an output confirmation process to start engraving of the engraved character, so that the deepest part of the engraved character passes through the protective coating, aluminum layer and stays at the position of the glass layer This is a method for forming an engraved character on a mirror using a laser, which is characterized by a depth adjustment step.

According to a sixth aspect of the present invention, there is provided a method for forming an engraved character on a silver mirror obtained by laminating a silver-coated layer, a copper-coated layer and a protective coating on a glass layer by using a YAG laser from the glass layer side. Preliminary operation of the oscillator to confirm that a stable laser output is ensured, and then to start engraving of the engraved character, and the deepest part of the engraved character passes through protective coating, copper-coated layer, and silver-coated layer This is a method of forming an engraved character on a mirror by a laser, which is characterized by a depth adjusting step of performing a depth adjustment.

According to a seventh aspect of the present invention, there is provided a method of forming an engraved character from a glass layer side by using a YAG laser on an aluminum mirror having a glass layer, an aluminum layer, and a protective coating laminated thereon, wherein the laser oscillator is preliminarily operated. After confirming that a stable laser output is ensured, start the engraving of the engraved character after confirming the output.The deepest part of the engraved character passes through the protective coating, the aluminum layer and the aluminum layer and the glass layer. This is a method of forming an engraved character on a mirror by using a laser, wherein the method includes a depth adjustment step of keeping the position of the boundary surface.

According to an eighth aspect of the present invention, the depth dimension of the engraved character up to the deepest portion is in the range of 1 to 5 μm.
A method for forming an engraved character on a cosmetic container using the laser described above.

According to a ninth aspect of the present invention, an object to be illuminated such as a cosmetic container, a silver mirror or an aluminum mirror is transported by a supply conveyor to an irradiation position of a laser oscillator, and the object to be illuminated on the supply conveyor is carried in and out. 9. The engraved character forming method according to claim 1, wherein a safety cover for preventing external leakage of the laser is provided at the site, and the safety cover is automatically opened and closed.

A tenth aspect of the present invention is the method for forming an engraved character according to any one of the first to ninth aspects, wherein the engraved character portion is filled with a colored coating material.

According to the method of forming an engraved character on a cosmetic container by a laser and the method of forming an engraved character on a mirror according to the present invention described above, an engraved character that is easy to see is reliably formed, and the engraved character portion of the cosmetic container is formed. Corrosion does not occur, and safety management of the work at the time of forming the engraved character is ensured, and work efficiency is improved. Also, in the case of a mirror, in a situation where the entire surface is a reflective mirror surface when viewed from the glass surface side, without forming irregularities on the surface of the reflective mirror surface, in a watermark form from the back side of the reflective mirror surface. By forming engraved letters, it can be tailored to a mysterious product.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for forming an engraved character on a cosmetic container and a method for forming an engraved character on a mirror according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 shows a nickel-rhodium plating on the surface of a metallic surface material layer 2 (often composed mainly of a nickel bronze layer) of a copper or brass material constituting a part of a cosmetic container 1. FIG. 4 is an enlarged cross-sectional view of a main part in a state where a nickel layer 3 is coated on a surface of a surface material layer (tan copper layer) 2;
Further, a rhodium layer 4 is coated on the outermost layer thereon, and the nickel layer 3 and the rhodium layer 4 constitute a plating layer 5.

FIG. 2 is an explanatory view showing the structure of the laser oscillator 11 of the YAG laser.
A laser is generated in the oscillating body 11 by transmitting an electric signal from the oscillating body 11, the laser is reflected and amplified between the reflecting mirrors 12 a and 12 b, and finally a high-power laser 14 is emitted from the emission port 13.

The laser 14 is used to form an engraved character 6 on the plating layer 5 of the cosmetic container 1. The engraved character may be an address, a name, a name, a product code number, a favorite word, or the like. Such contents may be used, and may be in any form such as kanji, hiragana, katakana, European characters, numbers, symbols, logos, etc.
Is specifically formed, the information of the engraved character is registered in the computer control unit 7 in advance, and thereafter, the engraved character 6 is automatically formed by the instruction of the computer control unit 7. It has become.

Next, when the engraving of the engraving character 6 is started, immediately after the operation of the laser oscillator 11 is started, the output of the laser 14 emitted therefrom is unstable. Continue preliminary operation. In this way, preparation for engraving is performed through an output confirmation step for confirming the stability of the laser output. The output can be confirmed by the computer control unit 7. In this way, the preliminary operation is continued until the stability of the laser output is confirmed.At this time, if necessary, the light source lamp of the laser oscillator and the base are checked and replaced, and the voltage adjustment etc. are also considered Get ready.

Here, the laser engraved character 6 is set to 0.
When observed with a microscope capable of measuring in units of 01 μm, it can be understood that the engraved character 6 is composed of an aggregate of small dot engravings 8. First, FIGS. 4A and 4B show an enlarged plan view and an enlarged vertical cross-sectional view in the case of a non-defective product in which the engraving character 6 is appropriate, and FIGS. FIG. 3 shows an enlarged plan view and an enlarged vertical sectional view of a defective product which is appropriate. In the case of a defective product, the dot marks 8 are non-uniform, while in the case of a good product, the dot marks 8 are uniform.

When the laser output is confirmed to be stable through the above preparation, the output confirmation step is completed. Thereafter, the stable laser 14 is emitted toward the plating layer 5 to form the engraved characters 6. Here, the deepest part 6a of the engraved character 6 engraved by the laser 14 is adjusted in the depth adjusting step so as to remain in the nickel layer 3 of the plating layer 5.

First, a surface material layer (mainly a copper layer) 2 which generally constitutes a part of the cosmetic container 1 in the plating layer 5
Has a thickness of about 0.5 mm and a nickel layer 3
Is about 8 to 12 μm, and the thickness of the rhodium layer 4 is about 0.02 to 0.05 μm.

Therefore, the deepest portion 6a of the engraved character 6 penetrates the rhodium layer 4 and does not reach the surface material layer 2 in the range of the depth dimension S1, that is, the deepest portion 6a is kept at the position of the nickel layer 3. A depth adjustment step is performed, and a preferred depth dimension S1 up to the deepest part of the engraved character is specifically 1 to
The case of the depth dimension S2, which is 5 μm, which is too shallow and the depth dimension S3, which is too deep, is as shown in FIG.

If the depth dimension S2 is too shallow, the deepest part 6a of the engraved character 6 remains at the position of the rhodium layer 4, so that the engraved character becomes unclear. On the other hand, when the depth dimension S3 is too deep, the deepest part 6a of the engraved character 6 reaches the surface material layer 2, so that the surface material layer (tan copper layer) 2 comes into contact with the outside air, and corrosion occurs therefrom. Will be done.

If the preferred depth dimension S1 up to the deepest part 6a of the engraved character 6 is secured by the depth adjusting step, the engraved character 6 becomes clear and easy to read, and an accident that causes corrosion on the engraved character occurs. do not do.

FIG. 5 shows a silver mirror 19 in which a silver-painted layer 16, a copper-painted layer 17, and a protective coating 18 are sequentially laminated on the back side of the glass layer 15 by engraving with a YAG laser from the protective coating-forming side. This shows a state in which the character 6 is formed, and the deepest part 6a of the engraved character 6 passes through the protective coating 18, the copper-coated layer 17, and the silver-coated layer 16 by the YAG laser, and the boundary surface between the silver-coated layer 16 and the glass layer 15 is formed. Is formed so as to remain at the position.

FIG. 6 shows an aluminum mirror 21 in which an aluminum layer 20 and a protective coating 18 are sequentially laminated on the back side of the glass layer 15.
5 shows a state in which the engraved character 6 is formed from the protective coating forming surface side by using a YAG laser, and the deepest portion 6a of the engraved character 6 is passed through the protective coating 18 and the aluminum layer 20 by the YAG laser to form the aluminum layer and the glass. It is formed so as to remain at the position of the boundary surface with the layer 15.

FIG. 8 shows that the back side of the glass layer 15
This shows a state in which engraved characters 6 are formed on a silver-painted mirror 19 in which a silver-painted layer 16, a copper-painted layer 17, and a protective paint 18 are sequentially laminated by using a CO2 laser from the protective paint-forming surface side.
(2) The deepest portion 6a of the engraved character 6 is formed so that the deepest portion 6a of the engraved character 6 passes through the protective coating 18, the copper-coated layer 17, and the silver-coated layer 16, and remains at the position of the glass layer 15.

FIG. 9 shows an aluminum mirror 21 in which an aluminum layer 20 and a protective coating 18 are sequentially laminated on the back side of the glass layer 15.
5 shows a state in which the engraved character 6 is formed from the protective coating forming surface side using a CO2 laser, and the deepest part 6a of the engraved character 6 is formed by the CO2 laser so as to remain at the position of the glass layer 15.

FIGS. 11 and 12 are examples for explaining the case where the engraved character 6 is formed using a YAG laser.
When an AG laser is used, the laser can be irradiated from the side of the glass layer 15, and at that time, the YAG laser does not change the glass layer 15 at all, and the silver coating layer 16 and the copper By engraving only the pulling layer 17, the protective layer 18, and the aluminum layer 20, the engraved characters 6 can be formed at the engraved portions.

As described above, the engraved characters are formed on the silver mirror 19 and the aluminum mirror 21 so that, when viewed from the glass surface side, the entire surface is a reflective mirror surface. By forming engraved characters in the form of a watermark from the back side of the reflecting mirror surface without forming irregularities, a mysterious mirror can be tailored.

Further, in the present invention, the cosmetic container 1,
An irradiation target including the silver mirror 19 or the aluminum mirror 21 is conveyed by a supply conveyor (not shown) to the irradiation position of the laser oscillator 11, and the irradiation target is loaded and unloaded on the supply conveyor. If a safety cover (not shown) is provided to prevent the laser from leaking outside, and the safety cover is opened and closed by an automatic opening and closing system using an automatic opening and closing device, etc., the safety management of engraved character forming work And the efficiency of engraving is improved as compared with the case where the safety cover is manually opened and closed.

The above-described engraved character portion can be filled with a colored coating material 22 as shown in FIGS. 7 and 10. When such a colored coating material is filled in the engraved character portion, the colored coating material can be filled. The vividness can be seen from the back side of the engraved character portion, while in the case of a mirror, it can be seen through the glass surface, making the completed cosmetic container 1, silver mirror 19 or aluminum mirror 21 more attractive Will be able to

[0037]

As described above, according to the method of forming an engraved character on a cosmetic container by a laser and the method of forming an engraved character on a mirror according to the present invention, the laser output is stabilized and varied in the output confirmation step. After confirming that there are few characters, the engraving of the engraved character is started, and the engraved character is subjected to a depth adjustment process, making it easy to see the engraved character and preventing the engraved character from corroding. Can be achieved. In addition, silver mirror 19 and aluminum mirror 2
By forming an engraved character on 1, under the situation where the entire surface is a reflective mirror surface when viewed from the glass surface side, a watermark is formed from the back side of the reflective mirror surface without forming irregularities on the surface of the reflective mirror surface Has the effect that it can be made into a mysterious mirror because it forms an engraved character.

According to the method for forming an engraved character on a cosmetic container by a laser and the method for forming an engraved character on a mirror according to the present invention, safety management of the engraved character forming operation is ensured and the safety cover is provided. There is an effect that the engraving work efficiency is improved as compared with the case of manually opening and closing.

[Brief description of the drawings]

FIG. 1 is an enlarged cross-sectional view of a main part illustrating a state of engraving work in a method for forming an engraved character on a cosmetic container using a laser according to the present invention.

FIG. 2 is a longitudinal sectional view showing a configuration of a laser oscillator of a YAG laser.

FIG. 3 is an enlarged plan view of a main part of the engraved character portion.

FIG. 4 is an enlarged view of a main part of an engraved character portion, and (a) and (b).
(A) is a plan view and a longitudinal cross-sectional view of a non-defective product;
(D) is a plan view and a longitudinal sectional view in the case of a defective product.

FIG. 5 is an enlarged cross-sectional view of a main part illustrating a state of engraving work in a method of forming an engraved character on a silver engraving mirror using a laser (YAG laser) according to the present invention.

FIG. 6 is an enlarged cross-sectional view of a main portion illustrating a state of engraving work in a method of forming an engraved character on an aluminum mirror using a laser (YAG laser) according to the present invention.

FIG. 7 is an essential part for explaining a state in which a coloring material is filled in an engraved character portion in the method for forming an engraved character on a cosmetic container and the method for forming an engraved character on a mirror using a laser (YAG laser) according to the present invention. It is an expanded sectional view.

FIG. 8 is an enlarged cross-sectional view of a main part illustrating a state of engraving in a method for forming an engraved character on a silver mirror using a laser (CO2 laser) according to the present invention.

FIG. 9 is an enlarged cross-sectional view of a main part illustrating a state of engraving work in the method of forming an engraved character on an aluminum mirror using a laser (CO2 laser) according to the present invention.

FIG. 10 shows a laser (CO2 laser) according to the present invention.
FIG. 4 is an enlarged cross-sectional view of a main part illustrating a state in which a coloring material is filled in a marking character portion in a method of forming a marking character on a cosmetic container and a method of forming a marking character on a mirror according to the present invention.

FIG. 11 is an enlarged cross-sectional view of a main part explaining a state of engraving in a method of forming an engraved character on a silver mirror using a laser (YAG laser) according to the present invention.

FIG. 12 is an enlarged cross-sectional view of a main part illustrating a state of engraving work in a method of forming an engraved character on an aluminum mirror using a laser (YAG laser) according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cosmetic container 2 ... Surface material layer 3 ... Nickel layer 4 ... Rhodium layer 5 ... Plating layer 6 ... Engraved character 6a ... Deepest part of engraved character 7 ... Computer control part 8 ... Dot engraved 11 ... Laser oscillator 12a, 12b ... Reflecting mirror 13 ... Laser port 14 ... Laser 15 ... Glass layer 16 ... Silver layer 17 ... Copper layer 18 ... Protective coating 19 ... Silver mirror 20 ... Aluminum layer 21 ... Aluminum mirror 22 ... Colored coating material S1-S3 ... Engraved character depth dimension

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mitsuharu Kimura 2-16-1, Kaga, Itabashi-ku, Tokyo Shiseido Kako Co., Ltd. (72) Inventor Satoru Hirama 2-16-1, Kaga, Itabashi-ku, Tokyo Shiseido Kako (72) Inventor Kozo Endo 2-16-1, Kaga, Itabashi-ku, Tokyo Shiseido Kako Co., Ltd. (72) Inventor Yoshinori Tanaka 2-16-1, Kaga, Itabashi-ku, Tokyo Shiseido Kako Co., Ltd. (72) Inventor Shinichi Ishigami 7-5-5 Ginza, Chuo-ku, Tokyo F-term in Shiseido Co., Ltd. (reference) 4E068 AB01 CA02 CE11 CF04 DA06 DA13 DB14

Claims (10)

[Claims] 1. A method in which a surface material layer constituting a part of a cosmetic container is subjected to nickel-rhodium plating in which a nickel layer and a rhodium layer are laminated, and engraved with a laser from a nickel-rhodium plating forming surface side using a laser. In the method of forming, the laser oscillator is preliminarily operated and an output confirmation step of starting engraving of the engraved character after confirming that a stable laser output is secured, and the deepest part of the engraved character passes through the rhodium layer. A method of forming an engraved character on a cosmetic container by using a laser, wherein the method includes a depth adjusting step of remaining at the position of the nickel layer. 2. A method for forming an engraved character using a laser from a protective coating forming surface side on a silver-painted mirror in which a silver-coated layer, a copper-coated layer and a protective coating are laminated on a glass layer. After confirming that a stable laser output is ensured by driving, an output confirmation process to start engraving of the engraved character, and the deepest part of the engraved character is a protective coating, copper-coated layer,
A method of forming an engraved character on a mirror by using a laser, comprising a depth adjusting step of passing through a silvered layer and remaining at a position of an interface between the silvered layer and the glass layer. 3. A method for forming an engraved character using a laser from a protective coating forming surface side on an aluminum pulling mirror in which an aluminum layer and a protective coating are laminated on a glass layer. An output confirmation process that starts engraving of the engraved characters after confirming that the laser output is secured, and the deepest part of the engraved characters passes through the protective coating, the aluminum layer, and the position of the boundary surface between the aluminum layer and the glass layer A method for forming a stamped character on a mirror using a laser, wherein the method includes a depth adjusting step of keeping the depth of the character. 4. A method for forming an engraved character on a silver mirror obtained by laminating a silver-coated layer, a copper-coated layer, and a protective coating on a glass layer by using a laser from a protective coating forming surface side. After confirming that a stable laser output is ensured by driving, an output confirmation process to start engraving of the engraved character, and the deepest part of the engraved character is a protective coating, copper-coated layer,
A method for forming an engraved character on a mirror by using a laser, which comprises a depth adjusting step of passing through a silvered layer and remaining at a position of a glass layer. 5. A method for forming an engraved character using a laser from a protective coating forming surface side on an aluminum pulling mirror in which an aluminum layer and a protective coating are laminated on a glass layer. An output confirmation process that starts engraving of the engraved characters after confirming that the laser output is secured, and a depth adjustment process that allows the deepest part of the engraved characters to pass through the protective coating and aluminum layer and remain at the glass layer position Forming a stamped character on a mirror using a laser. 6. A method in which a laser oscillator is preliminarily operated in a method of forming an engraved character from a glass layer side using a YAG laser on a silver mirror obtained by laminating a silver-coated layer, a copper-coated layer, and a protective coating on a glass layer. After confirming that stable laser output is ensured, an output confirmation process that starts engraving of the engraved character, and the deepest part of the engraved character is protective coating, copper-coated layer,
A method of forming an engraved character on a mirror by using a laser, comprising a depth adjusting step of passing through a silvered layer. 7. A method for forming an engraved character from a glass layer side on an aluminum mirror having a glass layer, an aluminum layer and a protective coating laminated thereon by using a YAG laser. An output confirmation process to start engraving of the engraved characters after confirming that the output is secured, and the deepest part of the engraved characters passes through the protective coating, the aluminum layer, and at the boundary position between the aluminum layer and the glass layer A method of forming an engraved character on a mirror by using a laser, wherein the method includes a depth adjusting step for stopping the character. 8. The depth dimension of the engraved character to the deepest part is 1 to
2. The method for forming an engraved character on a cosmetic container by using a laser according to claim 1, wherein the engraved character is in a range of 5 [mu]. 9. An irradiation object of a cosmetic container, a silver-drawn mirror or an aluminum-drawn mirror is conveyed by a supply conveyor to an irradiation position of a laser oscillator, and an external part of the laser is transferred to a loading / unloading site of the irradiation object on the supply conveyor. 9. The method for forming an engraved character according to claim 1, wherein a safety cover for preventing leakage is provided, and the safety cover is opened and closed automatically. 10. The method for forming an engraved character according to claim 1, wherein the engraved character portion is filled with a colored coating material.