Sagger with a two-dimensional code and method for forming a two-dimensional code on a sagger
The formation of a two-dimensional code on a saggar using a contrast-forming base material layer and firing process addresses the issues of discoloration and unreadability, enabling readable and mass-producible saggars with reduced formation time.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- AKECHI CERAMICS
- Filing Date
- 2024-10-23
- Publication Date
- 2026-05-11
AI Technical Summary
Existing methods for forming two-dimensional codes on crucibles using laser markers result in discoloration and unreadability due to thermal reactions, and mass production is difficult.
A two-dimensional code is formed on a saggar body using a laser marker with a contrast-forming base material layer, such as glaze or heat-resistant ink, followed by a firing process to create a readable contrast.
The two-dimensional code remains readable after thermal exposure and facilitates mass production, with reduced formation time and improved readability compared to QR codes.
Smart Images
Figure 2026075744000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a two-dimensional code-attached crucible with a two-dimensional code attached thereto, and a method for forming a two-dimensional code on the crucible.
Background Art
[0002] Conventionally, for individual management, a two-dimensional code (for example, QR code (registered trademark), barcode, data matrix, etc.) has been formed on a product using a laser marker. In this formation by a laser marker, a part of the surface base of the product is scraped off by the laser marker, and formation by the laser marker is performed by utilizing the fact that a part of the surface base undergoes a thermal reaction and is colored. (trademark) On the other hand, regarding individual management of crucibles, there have been proposed an identification structure for a firing crucible (Japanese Patent Laid-Open No. 6-94375) in which a cut groove constituting an identification code is formed at a predetermined part of the crucible, and an identification structure for a firing crucible (Japanese Patent Laid-Open No. 6-42884) in which a reaction-preventing base film mainly composed of zirconia is formed on at least the identification formation surface of a crucible body made of ceramic, and an identification label mainly composed of iron oxide powder with a purity of 90% or more is formed on the base film.
[0003]
[0004] However, when a two-dimensional code is formed on a crucible by a laser marker and fired, as shown in FIG. 8, there is a problem that the colored part formed by the thermal reaction on the surface returns to the color of the base due to temperature and thermal history, and the two-dimensional code cannot be read. Further, in the identification structures of the firing crucibles disclosed in Japanese Patent Laid-Open No. 6-94375 and Japanese Patent Laid-Open No. 6-42884, there is a problem that mass production is difficult.
Prior Art Documents
Patent Documents
[0005]
Patent Document 1
Patent Document 2
[0006] Therefore, the object of the present invention is to provide a saggar with a two-dimensional code that can be read using a laser marker and is easy to mass-produce, as well as a method for forming a two-dimensional code on a saggar. [Means for solving the problem]
[0007] The solution to the above problem is a two-dimensional code formed on the required parts of the saggar body and formed with a laser marker. Due to differences in color A saggar with a two-dimensional code, characterized by having a contrast-forming base material layer for creating contrast, and a two-dimensional code formed on the contrast-forming base material layer with the laser marker (Claim 1).
[0008] The contrast-forming base material that forms the contrast-forming base material layer is preferably formed of glaze or heat-resistant ink (Claim 2). The two-dimensional code is a data matrix. (trademark) It is preferable that this is the case (Claim 3).
[0009] Furthermore, to solve the above problems, a two-dimensional code is formed on the required parts of the saggar body using a laser marker. Due to differences in color A method for forming a two-dimensional code on a saggar, characterized by comprising: a surface treatment step of forming a contrast-forming base material layer for forming a contrast; a laser marking step of forming a two-dimensional code on the contrast-forming base material layer with the laser marker; and a firing step of firing the saggar body on which the two-dimensional code has been formed to form a contrast between the two-dimensional code and the surface of the contrast-forming base material layer (Claim 4).
[0010] The contrast-forming base material that forms the contrast-forming base material layer is preferably formed of glaze or heat-resistant ink (Claim 5). The two-dimensional code is a data matrix. (trademark) It is preferable that the surface treatment step is performed after the molding step of the saggar body, and the laser marking step is performed after the drying step of the saggar body (Claim 7). The surface treatment step and the laser marking step may be performed after the firing step of the saggar body (Claim 8). [Effects of the Invention]
[0011] According to the two-dimensional code-equipped saggar described in claim 1, the two-dimensional code formed with a laser marker can be read, and mass production is facilitated. According to the saggar with a two-dimensional code described in claim 2, the contrast-forming base material layer is less prone to discoloration or peeling due to thermal history, and the two-dimensional code can be read even after repeated use of the saggar. According to the two-dimensional code-equipped sagger described in claim 3, it is easier to read than a QR code (registered trademark), and the time required to form the two-dimensional code using a laser marker can also be shortened. According to the method for forming a two-dimensional code on a sagger as described in claim 4, the two-dimensional code formed with a laser marker can be read, and mass production can be easily carried out. According to the method for forming a two-dimensional code on a saggar described in claim 5, the contrast-forming base material layer is less likely to discolor or peel due to thermal history, and the two-dimensional code can be read even after repeated use of the saggar. The method for forming a two-dimensional code on a sagger described in claim 6 is easier to read than a QR code (registered trademark), and the time required to form the two-dimensional code using a laser marker is also reduced. The method for forming a two-dimensional code on a saggar described in claim 7 provides the same advantages as the method for forming a two-dimensional code on a saggar described in claim 4, plus it reduces the time required for forming the two-dimensional code using a laser marker. According to the method for forming a two-dimensional code on a sagger described in claim 8, the two-dimensional code formation time is longer than that of the method for forming a two-dimensional code on a sagger described in claim 7, but it has the effects of the method for forming a two-dimensional code on a sagger described in claim 4.
Brief Description of the Drawings
[0012] [Figure 1] It is a partial cross-sectional view of an embodiment of a sagger with a two-dimensional code of the present invention. [Figure 2] It is a photograph near the two-dimensional code (letters and numbers) in the sagger with a two-dimensional code shown in FIG. 1. [Figure 3] It is a manufacturing process chart of an embodiment (laser marking before firing) of the method for forming a two-dimensional code on a sagger of the present invention. [Figure 4] It is a photograph near the two-dimensional code in the sagger with a two-dimensional code (Data Matrix (trademark)) produced by the method for forming a two-dimensional code on a sagger of the present invention shown in FIG. 3. [Figure 5] It is a manufacturing process chart of another embodiment (laser marking after firing) of the method for forming a two-dimensional code on a sagger of the present invention. [Figure 6] It is a photograph near the two-dimensional code in the sagger with a two-dimensional code (QR Code (registered trademark)) produced by the method for forming a two-dimensional code on a sagger of the present invention shown in FIG. 5. [Figure 7] It is a photograph near the two-dimensional code in the sagger with a two-dimensional code (Data Matrix (trademark)) produced by the method for forming a two-dimensional code on a sagger of the present invention shown in FIG. 5. [Figure 8] It is a photograph near the two-dimensional code in the sagger with a two-dimensional code (letters and numbers) produced by the conventional method for forming a two-dimensional code on a sagger.
Modes for Carrying Out the Invention
[0013] In the present invention, a two-dimensional code 4 formed at a required part of the sagger body 2 by a laser marker, a contrast-forming base material layer 3 for forming a contrast with the two-dimensional code 4, and a two-dimensional code 4 formed by a laser marker on the contrast-forming base material layer 3 are provided. As a result, it is possible to read the two-dimensional code 4 formed by the laser marker, and a sagger 1 with a two-dimensional code that is easy to mass-produce and a method for forming a two-dimensional code on the sagger are realized.
Example
[0014] The sagger with a two-dimensional code and the method for forming a two-dimensional code on the sagger of the present invention will be described using an example shown in FIG. 1 or FIG. 2. The sagger 1 with a two-dimensional code of this example has a two-dimensional code 4 formed at a required part of the sagger body 2 by a laser marker, a contrast-forming base material layer 3 for forming a contrast with the two-dimensional code 4, and a two-dimensional code 4 formed by a laser marker on the contrast-forming base material layer 3. Each configuration will be described in detail below.
[0015] The contrast-forming base material layer 3 is provided to form a contrast with the two-dimensional code 4 formed by a laser marker. In this example, it is formed at a required part (the front side wall surface of the sagger body 2) of the sagger body 2 (a bottomed rectangular cylinder with an open upper end). However, the part where the contrast-forming base material layer is provided is not limited to the front side wall surface of the sagger body 2, and any part on the surface of the sagger body 2 may be used. <0000Specifically, the contrast-forming base material that forms the contrast-forming base material layer 3 in this embodiment is made of a glaze or heat-resistant ink that develops a blue color when fired. In this way, the blue coloration of the contrast-forming base material layer 3 creates a contrast between the two-dimensional code 4 and its background, making it readable. Furthermore, because these glazes or heat-resistant inks are resistant to high temperatures, the contrast-forming base material layer 3 is less likely to discolor or peel due to thermal history, allowing the two-dimensional code to be read even after repeated use of the saggar. However, the contrast-forming base material that forms the contrast-forming base material layer in this invention is not limited to those that develop a blue color; any contrast-forming base material that creates a contrast with the two-dimensional code and makes the two-dimensional code readable is broadly included within the scope of this invention.
[0018] The two-dimensional code 4 is formed on the surface of the contrast-forming base material layer 3 using a laser marker. Any two-dimensional identification mark that enables individual management of the saggar body 2 can be used as the two-dimensional code, such as a QR code (registered trademark) or a data matrix. (trademark) Barcodes, numbers, letters, and other combinations can be suitably used.
[0019] As a two-dimensional code, it is a data matrix. (trademark) This is preferable, as it contains more information, is easier to read than QR codes (registered trademark), requires less time to form the two-dimensional code using a laser marker, and is more suitable for mass production.
[0020] The two-dimensional code 4 is formed on the contrast-forming base material layer 3 by a laser marker, and then fired, creating a contrast with the surface of the contrast-forming base material layer 3, making it readable.
[0021] Next, the method for forming a two-dimensional code on a sagger according to the present invention will be explained using an embodiment shown in Figure 3 or Figure 4. The method for forming a two-dimensional code on a sagger 1 in this embodiment includes a surface preparation step of forming a contrast-forming base material layer 3 on the required parts of the sagger body 2 with a laser marker to create contrast with the two-dimensional code 4; a laser marking step of forming the two-dimensional code 4 on the surface of the contrast-forming base material layer 3 with a laser marker; and a firing step of firing the sagger body 2 with the two-dimensional code 4 to create contrast between the two-dimensional code 4 and the contrast-forming base material layer 3. The surface preparation step is performed after the molding step of the sagger body, and the laser marking step is performed after the drying step of the sagger body. The following describes each step. I will explain this in detail in order.
[0022] In the surface preparation process for forming a contrast-forming base material layer 3 that creates contrast with the two-dimensional code 4 formed by a laser marker on the required parts of the saggar body 2, the contrast-forming base material is applied to the required parts of the saggar body 2, for example, the front side wall surface of the saggar body 2, to form a smooth surface and perform the surface preparation. Specifically, the contrast-forming base material is applied with a brush, spread with a sponge or spatula to form a smooth surface, absorbed into the saggar body 2, and dried by natural curing.
[0023] As a base material for creating contrast, it is necessary to apply a material that is resistant to discoloration and peeling due to heat history, and that provides high contrast (differences in brightness and color) with the two-dimensional code 4 formed by the laser marker. Glazes and heat-resistant inks are suitable for this purpose. In this example, "Cobalt Blue for Bisque Stamps" manufactured by Kakujin Co., Ltd. was used.
[0024] In the laser marking process, in which a two-dimensional code 4 is formed on the surface of the contrast-forming base material layer 3 using a laser marker, the contrast-forming base material layer 3 is irradiated with a laser from the laser marker for a required time to form the two-dimensional code 4. When the contrast-forming base material layer 3 is irradiated with a laser marker in this way, the contrast-forming base material layer 3 is scraped away, and the surface material of the saggar body 2 is exposed. The two-dimensional code 4 itself may be formed by the laser marker (the two-dimensional code to be read may be formed on the surface material of the saggar body 2 and printed by the laser marker), or the background of the two-dimensional code 4 may be formed by the laser marker (the two-dimensional code to be read may be formed on the contrast-forming base material layer 3). In the embodiment shown in Figure 4, the latter method was used.
[0025] The two-dimensional code 4 can be any two-dimensional identification display that enables individual management of the saggar body 2, such as a QR code (registered trademark) or a data matrix. (trademark) Barcodes, numbers, letters, and other combinations can be suitably used. In this embodiment, as shown in Figure 4, a data matrix (trademark) This was formed as a two-dimensional code 4.
[0026] In the firing process to create contrast between the two-dimensional code 4 and the surface of the contrast-forming base material layer 3, the saggar body 2 with the two-dimensional code 4 is placed in the furnace and fired at a firing temperature of 1000°C or higher for 9 to 18 hours. This bakes the contrast-forming base material layer 3, creating contrast between it and the two-dimensional code 4 formed by the laser marker, making the two-dimensional code 4 readable and allowing for easy mass production of saggars 1 with two-dimensional codes. The area formed by the laser marker (the surface of the saggar body 2 exposed by the laser marker) turns brown due to the heat reaction during irradiation, but changes to the white color of the base material after firing, making the contrast between the contrast-forming base material layer 3 and the two-dimensional code 4 formed by the laser marker clearer.
[0027] In this embodiment of the method for forming a two-dimensional code on a sagger, as shown in Figure 3, the surface treatment step is performed after the molding step of the sagger body 2, and the laser marking step is performed after the drying step of the sagger body 2. This makes it possible to shorten the time required for forming the two-dimensional code using a laser marker.
[0028] Furthermore, another embodiment of the method for forming a two-dimensional code on a sagger according to the present invention, as shown in Figure 5, will be described. The only difference between the method for forming a two-dimensional code on a sagger in this embodiment and the method for forming a two-dimensional code on a sagger shown in Figure 3 is that in the method for forming a two-dimensional code on a sagger shown in Figure 3, the surface treatment step is performed after the molding step of the sagger body 2, and the laser marking step is performed after the drying step of the sagger body 2, whereas in the method for forming a two-dimensional code on a sagger in this embodiment, the surface treatment step and the laser marking step are performed after the firing step of the sagger body; otherwise, they are the same.
[0029] Thus, the method for forming a two-dimensional code on a saggar according to the present invention may be performed after firing the saggar. As a result, the time required for forming the two-dimensional code with a laser marker is longer than the method for forming a two-dimensional code on a saggar shown in Figure 3, because the laser marker thoroughly scrapes away the baked contrast-forming base material layer 3. However, even with this method, a contrast can be formed between the two-dimensional code 4 and the surface of the contrast-forming base material layer 3, allowing the two-dimensional code 4 to be read.
[0030] (Comparison test of 2D code formation time) The two-dimensional code formation time shown here refers to the shortest laser irradiation time required for the code to become readable. The two-dimensional code (data matrix) shown in Figure 4 was formed using the method for forming a two-dimensional code on a saggar shown in Figure 3. (trademark)While the two-dimensional code formation time for the method shown in Figure 5 is a minimum of 20 seconds, the two-dimensional code (QR code®) in Figure 6, formed by the method shown in Figure 5 for forming a two-dimensional code on a sagger, has a minimum two-dimensional code formation time of 112 seconds, while the two-dimensional code (data matrix) in Figure 7, formed by the method shown in Figure 5 for forming a two-dimensional code on a sagger, has a minimum two-dimensional code formation time of 112 seconds. (trademark) The shortest time for forming a two-dimensional code was 67 seconds.
[0031] (Consideration 1) The two-dimensional code (data matrix) formed by the method of forming a two-dimensional code on a saggar shown in Figure 5 (laser marking after firing and re-firing). (trademark) The 2D code formation time (67 seconds) is better than the 2D code formed by the 2D code formation method on the saggar shown in Figure 3 (laser marking before firing) (data matrix). (trademark) It was found that laser marking before firing shortens the 2D code formation time, as it requires approximately three times longer than the 2D code formation time of 20 seconds.
[0032] (Consideration 2) The two-dimensional code was formed on the saggar as shown in Figure 5 by the method of forming a two-dimensional code on the saggar (laser marking after firing and re-firing). Figure 6 The two-dimensional code (QR code®: two-dimensional code formation time 112 seconds) was formed using the two-dimensional code formation method on the saggar shown in Figure 5 (similarly, laser marking and re-firing after firing). Figure 7 Two-dimensional code (data matrix) (trademark) Compared to the 2D code formation time of 67 seconds, it requires approximately 1.67 times longer to form a 2D code (data matrix). (trademark)) It was confirmed that this method can shorten the time required to generate a two-dimensional code compared to a two-dimensional code (QR code (registered trademark)). [Explanation of symbols]
[0033] 1. Sagger with QR code 2. Saggered bowl body 3. Base layer for contrast composition 4. QR code
Claims
1. A saggar with a two-dimensional code, characterized in that it has a contrast-forming base material layer for creating contrast with a two-dimensional code formed by a laser marker on a required part of the saggar body, and the two-dimensional code formed by the laser marker on the contrast-forming base material layer.
2. The contrast-forming base material that forms the contrast-forming base material layer is formed of glaze or heat-resistant ink, as described in claim 1, for the saggar with a two-dimensional code.
3. The two-dimensional code is a data matrix, as described in claim 1 or 2, for the two-dimensional code-equipped saggar.
4. A method for forming a two-dimensional code on a saggar, comprising: a surface treatment step of forming a contrast-forming base material layer on a required part of the saggar body using a laser marker to form a contrast with the two-dimensional code formed thereon; a laser marking step of forming a two-dimensional code on the contrast-forming base material layer using the laser marker; and a firing step of firing the saggar body on which the two-dimensional code has been formed to form a contrast between the two-dimensional code and the surface of the contrast-forming base material layer.
5. The method for forming a two-dimensional code on a sagger according to claim 4, wherein the contrast-forming base material that forms the contrast-forming base material layer is formed of glaze or heat-resistant ink.
6. The method for forming a two-dimensional code on a sagger according to claim 4 or 5, wherein the two-dimensional code is a data matrix.
7. A method for forming a two-dimensional code on a sagger according to claim 4 or 5, wherein the surface treatment step is performed after the molding step of the sagger body, and the laser marking step is performed after the drying step of the sagger body.
8. The method for forming a two-dimensional code on a saggar according to claim 4 or 5, wherein the surface treatment step and the laser marking step are performed after the firing step of the saggar body.