KR20210055124A - Decoration Methods of Ceramics Surface - Google Patents

Abstract

The present invention provides a method for decorating a surface of ceramics, wherein after installing at least one layer of coloring material on a surface of a molded ceramic object, a part of the coloring material layer is cut to easily produce various colors and patterns as intended by a method of expressing color patterns on an exposed surface, thereby having excellent reproducibility of the pattern expression, and being suitable for mass production at low cost.

Description

How to decorate ceramics surface{Decoration Methods of Ceramics Surface}

The present invention relates to a method for decorating a porcelain surface.

Conventional methods for surface decoration of ceramics include a method of drawing a draft on the object (body) before high-temperature firing and treating it with glaze, and a method using colored clay. Examples of the method using colored clay are the mifiore technique and/or the Yeonrimun technique, which expresses a pattern by mixing and kneading or combining various colored clays containing original colored clay or metal oxide. , There is a neriage technique in which several pieces of colored soil are collected in a concave frame so that the inside and outside of the piece have the same pattern. However, in order to express the intended pattern, the process of drawing a sketch or kneading clay must be done by hand. In particular, in the case of forming a three-dimensional pattern or spot pattern, there is a problem in that the manufacturing cost is high because the glaze must be repeatedly applied or a separate coloring must be applied to the surface of the ceramic product.

As a method for decorating the surface of ceramics that can easily form irregularities or spots, Japanese Patent Laid-Open No. 03262684, in the form of flakes in the form of particles and/or glazes in the state of particles and slurry (slurry in liquid state). It describes a method of mixing the glaze of pottery and applying the glaze to the surface of the porcelain product. However, in this method, although it is possible to easily express the pattern of spots, it is difficult to express other intended patterns, and the reproducibility of the pattern is also insufficient.

Japanese Patent Laid-Open No. 2000-7468 applies a transfer paper for surface decoration to the glazed surface of chaebol-grilled or secondary fired ceramics, and then fired at a temperature of about 1,000 to 1,200℃ or higher, followed by chaebol-roasting or secondary firing. It describes a method of expressing by protruding the transfer layer on the glazed surface of. According to this method, it is possible to efficiently decorate the surface of a smooth surface, such as a pattern, but it requires high-temperature firing once again after applying the transfer paper, and an expensive screen printing machine must be introduced, and the surface decoration process is cumbersome. There was a problem with that.

Japanese Unexamined Patent Application Publication No. 6262615 describes the drying of the molded pottery, and then the liquid to be adsorbed on the ware is applied to the surface of the ware so as to form a pattern, and before it is dried, the surface is blasted and the liquid is applied. It describes a method of expressing a three-dimensional pattern on the surface of a ceramic object in which only the uncoated portion is peeled off and the liquid-applied portion is expressed in a three-dimensional pattern. In the above document, the liquid application portion can be colored, but since the blast portion is the base of the original porcelain substrate, a step of providing a colored layer again is required to form a colored layer there. Therefore, in the above technology, the process for diversifying color patterns was complicated.

Accordingly, an object of the present invention is to provide a method for decorating a ceramic surface suitable for mass production at low cost, which can easily express various intended color patterns, has excellent reproducibility of pattern expressions, and is suitable for mass production.

According to the present invention, various intended color patterns can be easily and reproducible, and can be expressed on ceramics at low cost. In addition, according to the present invention, it is possible to easily impart a three-dimensional effect to a color pattern. Therefore, the present invention is suitable for mass production of surface-decorated ceramics.

In the present invention, the surface decoration method can be applied to the surface decoration of various types of ceramics such as tableware, flower pots, bricks, sidewalk blocks, tiles, decorative articles, interior and exterior tiles, bathtubs, toilet bowls, and terracotta.

1 is a schematic diagram showing an example of an apparatus for cutting porcelain pieces.
Fig. 2 is a schematic plan view of the device of Fig. 1;
3 is a schematic diagram showing another example of an apparatus for cutting porcelain pieces.
4 is a partially enlarged cross-sectional view showing an example of a porcelain base provided with a colored material layer (a). (b) is a partially enlarged cross-sectional view showing a state in which the colored material layer of (a) is cut. (c) is a partially enlarged plan view showing the state obtained by cutting the colored material layer of (a).
5 is a partially enlarged cross-sectional view showing another example of a porcelain base provided with a colored material layer (a). (b) is a partially enlarged cross-sectional view showing a state in which the colored material layer of (a) is cut. (c) is a partially enlarged plan view showing the state obtained by cutting the colored material layer of (a).
6 is (a) is a partially enlarged cross-sectional view showing another example of a ceramic base provided with a colored material layer. (b) is a partially enlarged cross-sectional view showing a state in which the colored material layer of (a) is cut. (c) is a partially enlarged plan view showing the state obtained by cutting the colored material layer of (a).
7 is a partially enlarged cross-sectional view showing another example of a porcelain base provided with a colored material layer (a). (b) is a partially enlarged cross-sectional view showing a state in which the colored material layer of (a) is cut. (c) is a partially enlarged plan view showing the state obtained by cutting the colored material layer of (a).
8 is a partially enlarged cross-sectional view showing another example of a ceramic base provided with a colored material layer (a). (b) is a partially enlarged cross-sectional view showing a state in which the colored material layer of (a) is cut. (c) is a partially enlarged plan view showing the state obtained by cutting the colored material layer of (a).
9 is a partially enlarged cross-sectional view showing another example of a ceramic base provided with a colored material layer (a). (b) is a partially enlarged cross-sectional view showing a state in which the colored material layer of (a) is cut. (c) is a partially enlarged plan view showing the state obtained by cutting the colored material layer of (a).
10 is (a) is a partially enlarged cross-sectional view showing another example of a ceramic substrate provided with a colored material layer. (b) is a partially enlarged cross-sectional view showing a state in which the colored material layer of (a) is cut. (c) is a partially enlarged plan view showing the state obtained by cutting the colored material layer of (a).
11 is (a) is a partially enlarged cross-sectional view showing another example of a ceramic base provided with a colored material layer. (b) is a partially enlarged cross-sectional view showing a state in which the colored material layer of (a) is cut. (c) is a partially enlarged plan view showing the state obtained by cutting the colored material layer of (a).

As a result of hard research for the above purposes, the present inventors intend by installing at least one layer of colored material on the surface of the molded ceramics, and cutting a part of the layer of colored material to display a colored pattern on the exposed surface. The present invention was conceived by finding out that ceramics can be produced in a variety of color patterns that are easy, reproducible, and inexpensive.

That is, in the porcelain surface decoration method of the present invention, at least one layer of colored material is provided on the surface of the molded porcelain base, and a part of the colored material layer is cut to display a colored pattern on the exposed surface. It is characterized. It is preferable that the said coloring material layer is made into two or more layers each having different colors.

It is preferable to form a concave or convex taper-shaped cutting portion in the colored material layer in the portion where the color pattern of the porcelain object is to be expressed.

It is preferable that the porcelain article has a convex and convex portion on the surface. In a portion having a convex and convex portion of the porcelain base, the colored material layer is provided at least above and around the convex and convex portion, so that the convex and convex portion is exposed to a depth at which the convex and convex portion or a required color pattern is exposed. And it is preferable to cut the colored material layer around the periphery to form a color pattern with the exposed surface of the convex uneven portion and the colored material layer exposed around the convex and convex portion.

It is preferable that the porcelain base has a concave and concave-convex portion on the surface. In a portion having a concave and concave-convex portion of the ceramic piece, the colored material layer is provided at least on and around the concave-and-convex portion, and the portion of the concave-and-convex portion to a depth reaching the ceramic piece around the concave and concave-convex portion, and It is preferable to cut the colored material layer around the periphery to form a colored pattern by the colored material layer exposed in the concave and concave-convex portions.

The method for decorating the surface of porcelain according to the present invention includes: (1) a step of molding a ceramic material, (2) a step of forming a colored material layer, (3) a step of cutting a colored material layer, and (4) a porcelain. It includes a step of testing a substrate, and a step of (5) firing.

(Molding process)

There is no particular limitation as a material for molding porcelain objects, and all genres of clay can be used. For example, widely known earthenware, pottery, stoneware, and each of the pottery can be used. To these, feldspar or/and pumice or/and quartz or/and a pigment added thereto can be used. There is no particular limitation on the shape of the ceramics, and examples thereof include tableware, flower pots, bricks, sidewalk blocks, tiles, decorative items, interior and exterior tiles, bathtubs, toilet bowls, terracotta, and the like.

As a method of molding porcelain objects, depending on the shape you want to make, the soil water injection molding method (gypsum mold injection molding method), pressure injection molding method, machine wheel molding method, roller machine molding method, press molding method, extrusion molding method, etc. Well-known methods are mentioned. In the case of forming a ceramic object of a relatively complex shape such as tableware, it is preferable to mold it using these molding methods. When using such a molding method, not only a gypsum type but also a mold may be used as necessary.

In the case of forming irregularities on the surface of ceramics for surface decoration, it is preferable to use a plaster shape with the shape of the irregularities attached to it, and to imprint the pattern on the object before drying. If necessary, the surface of the porcelain object that has been demolded from a plaster frame is cut with an intaglio or a relief, or an object with a hard pattern such as a stamp is pressed into the object before drying and the pattern is inserted. You may use the same method to form the irregularities. In the case of forming the unevenness, the unevenness may be formed by the above method after the first coloring material layer is provided or after the second coloring material layer is provided. If necessary, 1, 2, 3... The unevenness may be provided by the above method before and after the installation of the colored material layer.

A method of forming irregularities by cutting the surface of a ceramic object will be described with reference to the drawings. 1 is a schematic diagram showing an example of an apparatus for cutting vessel-shaped porcelain objects. Fig. 2 is a schematic plan view of the device shown in Fig. 1; This apparatus has grips 4a and 4b for gripping the lower part of the porcelain article 1 from both sides, and a means 5 for cutting the side surface of the porcelain article 1. Grip 4a is supported by cylinder 40 so that it can rotate, and at the same time, it can be rotated by motor 42 through belt transmission mechanism 41. The grip 4b may be rotationally driven by a motor 42 together with the grip 4a, or may be supported so that it can be rotated only by a cylinder or the like. The gripping means of the porcelain piece 1 is not intended to be limited to the use of grips 4a and 4b, and for example, a rotary chuck capable of gripping each of the upper and lower portions of the porcelain piece 1 may be used.

The cutting means 5 is a linear actuator 6a accommodated in the outer cylinder 50 located in the second axis (y-axis) direction perpendicular to the first axis (z-axis) direction parallel to the central axis of the porcelain object 1. It is mounted, and can be moved in the y-axis direction by interlocking with the direct-acting actuator 6a. The outer cylinder 50 is mounted on a linear actuator 6b accommodated in the outer cylinder 51 located in the z-axis direction, and can move in the z-axis direction by interlocking with the linear actuator 6b. The outer cylinder 51 is mounted on the linear actuator 6c accommodated in the outer cylinder 52 located in the z-axis direction and the third axis (x-axis) direction perpendicular to the y-axis direction, and can be moved in the x-axis direction by interlocking with the linear actuator 6c. Therefore, the cutting means 5 is capable of three-dimensional movement.

Examples of the cutting means 5 include a blade, a router, a grinder, and a roll grinder. By attaching these to the linear actuator, it is possible to provide flexibility such as advance and retreat of the z, y or x axis so that it can be cut according to the irregular curved surface of the equipment (eg, egg-shaped, oval-shaped object). Examples of the direct actuators 6a, 6b, and 6c include hydraulic cylinders and air cylinders. When using a hydraulic or pneumatic cylinder, it can be driven by a motor.

The direct drive mechanisms in each of the x, y and z directions are not intended to be limited to those using the direct actuators 6a, 6b, and 6c, and in addition, for example, a mechanism composed of a rack and a cogwheel may be used. Further, instead of the mechanism using the direct actuators 6a, 6b, and 6c, the cutting means 5 may be operated by a robot arm.

It is preferable that the motors that drive the direct actuators 6a, 6b and 6c and the motor 42 that drives the grip 4a rotationally are controlled by an electronic control device that performs signal processing according to a program stored in advance. In the case of using the robot arm, it is preferable to control it by an electronic control device that performs signal processing according to a program stored in advance. By using the above-described configuration device, since the position and the cutting depth of the cutting means 5 with respect to the porcelain object 1 can be freely controlled, it is possible to form the uneven shape at a desired location in a short time while elaborating.

3 shows an example of an apparatus for cutting a plate-shaped ceramic object. In Fig. 3, the same reference numerals are assigned to the same members or parts as in the example shown in Fig. 1. In the example of Fig. 3, a pedestal 7 having a suction hole 70 is used as a means for holding the porcelain object 1. The pedestal 7 is supported so that it can be rotated by the spindle unit 71, and can be driven to rotate by a motor 42 through which the belt transmission mechanism 41 is interposed. The porcelain object 1 is placed so that its back side can directly contact the pedestal 7, and it is adsorbed to the pedestal 7 by the operation of the vacuum pump 72. It is preferable to use the pedestal 7 made of silicone rubber or the like. The types of the cutting means 5, the three-dimensional movement control of the cutting means 5, and the control of the motor 42 are preferably the same as described above. When cutting the back side of a plate-shaped porcelain piece 1, it is good to use a pedestal 7 that is in contact with the top surface of the plate-shaped porcelain piece 1.

(Coloring material layer formation process and cutting process)

Hereinafter, the process of forming the colored material layer and the process of cutting the colored material layer will be described with reference to the drawings. 4 and 5 show an example in which a colored material layer is provided on a smooth surface of a porcelain base and a part of the layer is cut. In the example shown in Fig. 4, a colored material layer 2 comprising two layers of a first layer 20 and a second layer 21 having different colors is provided on the surface of the porcelain base 1, respectively. As for the coloring material 2, the bottom material (a general decoration technique is used to paint the surface of the base material with the bottom material. White porcelain during the Joseon Dynasty was baked by painting in blue, brown, or red on the surface of an unglazed substrate and using transparent oil), pigments, clay, glaze, and colored makeup. As the pigment, generally known pigments used for coloring porcelain can be used, and examples thereof include Western pigments and Eastern pigments.

Examples of the means for applying the pigment include an airbrush method, an immersion method, a spin coating method, and the like, but an airbrush method is preferable. In the airbrush method, not only can the pigment be efficiently applied, but also the film thickness can be easily controlled. For example, when applying to the entire side or top of a porcelain article, place the porcelain article on a rotating base, rotate it by a driving means such as a motor, and apply it evenly with an airbrush. The airbrush may be immovable, but it is preferable that it is movable. When the airbrush is movable, a mechanism such as a three-dimensional movement control mechanism of the cutting means may be used, and a motor that controls the use of the airbrush and a motor that rotates porcelain objects are processed according to a program stored in advance. It is preferable to control by an electronic control device to perform.

In the case of using clay or colored makeup as the coloring material 2, use a paste-like material diluted with a solvent such as water, and use a method such as dipping method or sipin coat method depending on the shape of the ceramic. It is preferable to apply it to the surface. The colored material layer 2 does not necessarily have to be installed on all sides of the ceramic, but can be installed only in the area where you want to form a colored pattern. In addition, at least one layer of the colored material layer 2 may be provided, and several layers may be provided according to the desired color pattern.

The thickness of each of the first layer 20 and the second layer 21 constituting the colored material layer 2 may be appropriately set according to the desired color pattern, but is usually 0.01 to 3 mm (the same hereinafter). Each colored material layer 20 The color of, 21 can be set appropriately according to the desired color pattern.

The ceramics provided with the colored material layer 2 is dried until the colored material layer 2 can be cut. It is preferable to perform drying in an environment in which temperature and humidity are kept constant. If the strength of the porcelain piece 1 is not high enough to withstand the next step of cutting, the porcelain with the colored material layer 2 may be temporarily baked or unglazed. When temporarily baking or unglazed, it is good to put the pottery with the colored material layer 2 in a kiln and heat it until it reaches a temperature of about 500 to 1000°C. It is not always necessary to temporarily bake the whole, and only the part in contact with the holding means may be bake temporarily during cutting. As a partially temporary baking method, there are a method of heating the porcelain piece 1 in an electric furnace that can control the temperature distribution, and a method of blowing a partial hot air to the extent that the porcelain piece 1 is not deformed.

In the example shown in Fig. 4, after drying the colored material layer 2 shown in Fig. 4(a), cutting it into an earthenware (earthenware) shape to a depth reaching the first layer 20. Thus, as shown in Figs. 4(b) and (c), a rounded color pattern by the first layer 20 is formed on the exposed surface 3.

Each means used when cutting the colored material layer 2 (porcelain gripping means, cutting means, three-dimensional moving means of the cutting means, and means for rotating ceramics) and their control are to cut the above-described ceramic pieces to install irregularities. Since it may be the same as that of the case, the description is omitted. However, as shown in Fig. 4, in the case of forming the cutting portion of the induction shape, a router is preferable as the cutting means. In the case of forming a cutting portion of a mortar shape, masking may be performed so that only the portion to be cut can be exposed, and then a sand blast method may be used.

5 shows an example in which a colored material layer 2 consisting of three layers of the first layer 20, the second layer 21, and the third layer 22, each having different colors, is provided on the surface of a porcelain base 1, and a part thereof is cut. Show. When three layers of colored material layers 20 to 22 are provided, cutting into a mortar shape to a depth reaching the first layer 20, the first layer is exposed to the exposed surface 3 as shown in Figs. 5(b) and (c). It is possible to form a colored pattern in a double-layered round shape consisting of layer 20 of the second layer and layer 21 of the second layer.

In addition, in the case of installing the colored material layer 2 consisting of three layers as shown in Fig. 5, a portion to be cut to a depth reaching the second layer 21 and a portion to be cut to a depth reaching the first layer 20 are installed. When done, it is possible to form various kinds of color patterns.

When cutting the colored material layer 2 provided on the smooth surface as shown in Figs. 4 and 5, in order to express the color pattern, it is good to form a tapered surface as described above, and the shape of the cut part or the colored material layer By appropriately changing the cutting angle for 2, the color pattern that appears on the exposed surface 3 can be changed in various ways. In addition, it is possible to cut to a depth that reaches the porcelain material, thereby enabling color composition including the color of the porcelain material. The cutting portion is not limited to a shape as long as it has a tapered surface, and geometric shapes such as a conical shape, a pyramid shape, and a hemispherical shape other than the induction shape; Grooves imitating letters; Irregularly shaped grooves; A groove that emulates a specific object (for example, flowers, animals, grain of wood, etc.) can be mentioned.

6 to 8 show examples in which a colored material layer is provided and cut on a surface of a porcelain base on which a cylindrical convex and convex portion is provided.

In the example shown in Fig. 6, the first layer 20, which is thinner than the height of the convex and convex portions 10, is provided, and the second layer 21 is provided thereon.

6(b) and (c), when the portion of the convex and convex portion 10 and the vicinity thereof are cut in the same shape along the ceramic surface to a depth reaching the upper end of the convex and convex portion 10, the exposed surface 3 is The color pattern of the double circle can be formed by the exposed surface of the convex and convex portion 10 and the first layer 20. For cutting in the same shape along the ceramic surface, it is preferable to use a knife blade or a roll grinder as a cutting means, but a sand blast method may be used if necessary.

In the example shown in Fig. 7, the first layer 20 and the second layer 21 are provided so that their total thickness is smaller than the height of the convex and convex convexities 10, and a third layer 22 is provided thereon. As shown in Figs. 7(b) and (c), when the convex and convex portions 10 and the vicinity thereof are cut into the same shape along the ceramic surface to a depth reaching the upper end of the convex and convex portions 10 of the ceramic piece, the exposed surface 3 is The exposed surface of the convex and convex portions 10, the first layer 20 and the second layer 21 can form a triple-circle color pattern.

In the example shown in Fig. 8, the colored material layers 20 to 22 are provided so that their total thickness is smaller than the height of the convex and convex portions 10. As shown in Fig. 8, when the convex and convex portions 10 and the vicinity thereof are cut in the same shape along the porcelain surface to a depth reaching the upper end of the convex and convex portions 10 of the ceramic piece, the exposed surface of the convex and convex portions 10 on the exposed surface 3, The color pattern of the triple circle by 20 of the first layer and the second layer 21 can be formed, and the triple circle pattern can be made more prominent than its surroundings, so that a three-dimensional effect is also obtained.

Ceramics having three layers of colored material layers 20, 21, and 22 shown in Figs. 7 and 8 do not necessarily need to be cut to a depth reaching the upper end for all the convex and convex portions 10 even if they have a plurality of convex and convex portions 10. , A portion to be cut up to the first layer 20 or the second layer 21 may be provided, and various color patterns can be formed by this.

As described above, if the convex and convex portions are provided on the porcelain piece in advance, after forming the colored material layer 2, only the portions of the convex and convex portions 10 and the vicinity thereof are cut into the same shape along the surface of the porcelain piece to a predetermined depth. Color patterns can be formed. By appropriately changing the shape of the convex and convex portion 10 and the cutting angle for the colored color layer 2, the color pattern to be exposed can be variously changed. There is no particular limitation on the shape of the convex and convex portion 10, and geometric shapes such as prismatic shapes other than the cylindrical shape; A shape imitating a character; Irregular shape; A shape that emulates a specific object (for example, flowers, animals, grain of wood, etc.) can be mentioned.

9 to 11 show examples in which a colored material layer is provided and cut on the surface of the porcelain base on which the circumferential concave and concave portions are provided. In the example shown in Fig. 9, a colored material layer 2 thicker than the depth of the concave and concave portions 11 is provided. As shown in Figs. 9(b) and (c), when the concave and concave and convex portions 11 are cut into the same shape along the surface of the porcelain to the depth reaching the porcelain base, the concave and convex portions 11 are filled. A circular colored pattern by one layer of colored material 2 can be formed on the exposed surface 3.

In the example shown in Fig. 10, a first layer 20 that is thinner than the depth of the concave and concave portions 11 is provided, and a second layer 21 is provided thereon. As shown in Figs. 10(b) and (c), when the portion of the concave and convex portion 11 and its vicinity are cut into the same shape along the surface of the porcelain piece to the depth reaching the porcelain base, the inside of the concave and convex portion 11 The colored pattern of the double circle by the filled colored material layers 20 and 21 can be formed on the exposed surface 3.

In the example shown in Fig. 11, the first layer 20 and the second layer 21 are provided so that their total thickness is smaller than the depth of the concave and concave and concave and concave and concave and concave and convex 11, and a third layer 22 is provided thereon. As shown in Fig. 11, when the portions of the concave and convex portions 11 and the vicinity thereof are cut in the same shape along the porcelain substrate surface to a depth that reaches the porcelain base, the colored material layers 20 to 22 filled in the concave and convex portions 11 The color pattern of the triple circle can be formed on the exposed surface 3.

Even if ceramics having three layers of colored material layers 20, 21, and 22 shown in Fig. 11 have a plurality of concave and concave portions 11, it is not necessary to cut all concave and convex portions 11 to a depth that reaches the surrounding porcelain base. In addition, a portion to be cut may be provided to a depth reaching the first color material layer 20 or the second color material layer 21, and various color patterns can be formed by these.

As described above, if the concave and concave portions 11 are previously provided on the porcelain piece, after forming the colored material layer 2, the portion of the concave and convex portion 11 and the vicinity thereof are cut into the same shape along the surface of the ceramic piece to a predetermined depth. With just that, you can form a color pattern. By appropriately changing the shape of the concave and concave-convex portions 11 or the cutting angle for the colored material layer 2, the color pattern to be displayed can be variously changed. The shape of the concave and concave and convex portions 11 is not limited, and in addition to the cylindrical shape, geometric shapes such as a cone shape, a prism shape, a pyramid shape, a hemispherical shape, and a protrusion shape; Grooves imitating letters; Irregular shaped grooves; Examples include grooves that mimic specific objects (for example, flowers, animals, wood grain patterns, etc.).

In addition, if the color patterns formed in the above smooth portions, the colored patterns formed in the convex and convex portions 10, and the colored patterns formed in the concave and convex portions 11 are combined together, various patterns can be formed on the ceramics. I can.

The cutting of the colored material layer 2 is preferably performed prior to chaebol roasting or secondary firing, but is not intended to be limited thereto, and may be performed after chaebol roasting as necessary.

(Firing)

After forming a colored pattern on the ceramics as described above, chaebol-roasting or secondary firing is performed. It is preferable to roast the chaebol or secondary firing at a temperature of about 1,000 to 1,400°C for 6 to 25 hours. Although it is preferable to apply the glaze before the chaebol roasting or the secondary firing, it is not necessarily limited thereto. It is better to apply the glaze by dipping or spraying.

１: Pottery
10: convex irregularities
11: Concave and convex part
２: layer of coloring material
20: first coloring material layer
21: second coloring material layer
22: third coloring material layer
3: exposed surface
4a, 4b: grip
40: cylinder
41: belt transmission mechanism
42: motor
5: cutting means
50，51，52: external cylinder
6a, 6b, 6c: direct acting actuator
7: pedestal
70: suction hole
71: spindle unit
72: vacuum pump

Claims (5)

Porcelain, characterized in that at least one layer of colored material (2) is provided on the surface of the molded porcelain base (1), and a part of the colored material layer (2) is cut to reveal a colored pattern on the exposed surface. How to decorate the surface. The method according to claim 1, wherein the porcelain base (1) has a smooth portion on the surface, and a colored material layer (2) is provided on the smooth portion, and the colored material layer is cut in a taper shape. Porcelain surface decoration method, characterized in that forming a part. The colored material layer according to claim 1 or 2, wherein the porcelain base (1) has a convex convex portion (10) on its surface, and at least on and around the convex convex portion (10). (2) is provided, and the colored material layer 2 around the convex convex and convex part 10 is cut to the depth at which the convex convex and convex part 10 is exposed, and the convex convex and convex part 10 A method for decorating a surface of ceramics, characterized in that a colored pattern is formed by the exposed surface of) and the colored material layer (2) exposed around it. The method according to claim 1 or 2, wherein the porcelain piece has a concave and concave portion (11) on its surface, and the colored material layer (2) is provided at least on and around the concave and concave portion (11). , By cutting the concave concave-convex part 11 and the colored material layer 2 around the concave concave-convex part 11 to a depth reaching the porcelain object around the concave concave-convex part 11, and exposed in the concave concave-convex part 11 A method for decorating a surface of ceramics, characterized in that a colored pattern is formed by the colored material layer (2). 3. The method according to claim 1 or 2, wherein the coloring material layer (2) is made up of two or more layers of different colors or brightness, respectively.

Images