JP-2026075744-A - Sagger with a two-dimensional code and method for forming a two-dimensional code on a sagger

Abstract

[Problem] The problem addressed by the present invention is to provide a saggar 1 with a two-dimensional code 4 formed by a laser marker that can be read and is easy to mass-produce, and a method for forming a two-dimensional code on a saggar. [Solution] The sagger 1 with a two-dimensional code of the present invention has a two-dimensional code 4 formed on a required part of the sagger body 2 using a laser marker, a contrast-forming base material layer 3 for creating contrast, and a two-dimensional code 4 formed on the contrast-forming base material layer 3 using a laser marker. [Selection Diagram] Figure 1

Inventors

• 永水 廣太
• 五十嵐 広大

Assignees

• 明智セラミックス株式会社

Dates

Publication Date

20260511

Application Date

20241023

Claims (8)

1. A saggar with a two-dimensional code, characterized by having 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 having 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 of 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, characterized by comprising: a surface preparation step of forming a contrast-forming base material layer on a required portion of the saggar body using a laser marker to create contrast with the two-dimensional code; a laser marking step of forming the 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 create 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 saggar 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. The method for forming a two-dimensional code on a saggar according to claim 4 or 5, wherein 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.
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.

Description

This invention relates to a saggar with a two-dimensional code attached, and a method for forming a two-dimensional code on a saggar. Conventionally, for individual product management, two-dimensional codes (e.g., QR codes (registered trademarks), barcodes, data matrices, etc.) have been formed on products using laser markers. This laser marker formation method utilizes the fact that a portion of the product's surface is removed by the laser marker, and this portion of the surface reacts with heat, resulting in color change. On the other hand, regarding individual management of saggars, several identification structures have been proposed, including one for firing saggars in which a groove constituting an identification code is formed in a predetermined part of the saggar (Japanese Patent Publication No. 6-94375), and another for firing saggars in which a reaction-preventing undercoat mainly composed of zirconia is formed on at least the label-forming surface of the saggar body made of ceramic, and an identification mark mainly composed of iron oxide powder with a purity of 90% or more is formed on the undercoat. (Japanese Patent Publication No. 6-42884) However, when a two-dimensional code is formed on a saggar using a laser marker and then fired, as shown in Figure 8, the colored areas created by the thermal reaction on the surface revert to the base color due to temperature and thermal history, making it impossible to read the two-dimensional code. Furthermore, the identification structures for firing saggars described in Japanese Patent Publication No. 6-94375 and Japanese Patent Publication No. 6-42884 presented difficulties in mass production. Japanese Patent Application Publication No. 6-94375Japanese Patent Application Publication No. 6-42884 This is a partial cross-sectional view of one embodiment of a saggar with a two-dimensional code according to the present invention.This is a photograph of the area around the two-dimensional code (letters and numbers) on the saggar with a two-dimensional code shown in Figure 1.This is a manufacturing process chart for one embodiment of the method for forming a two-dimensional code on a saggar according to the present invention (laser marking before firing).Figure 3 shows a photograph of the area around the two-dimensional code (data matrix) in a saggar with a two-dimensional code (data matrix) produced by the method for forming a two-dimensional code on a saggar according to the present invention.This is a manufacturing process chart for another embodiment (laser marking after firing) of the method for forming a two-dimensional code on a saggar according to the present invention.Figure 5 shows a photograph of the area around the two-dimensional code (QR code®) in a saggar with a two-dimensional code attached, which was produced using the method for forming a two-dimensional code on a saggar according to the present invention.Figure 5 shows a photograph of the area around the two-dimensional code (data matrix) in a saggar with a two-dimensional code (data matrix) produced by the method for forming a two-dimensional code on a saggar according to the present invention.This is a photograph of the area around the two-dimensional code (letters and numbers) on a saggar, which was created using a conventional method for forming two-dimensional codes on saggars. In this invention, a saggar body 2 has a two-dimensional code 4 formed on a required part of the saggar body 2 using a laser marker. This saggar body 2 also has a contrast-forming base material layer 3 for creating contrast with the two-dimensional code 4 formed on the contrast-forming base material layer 3. This allows the two-dimensional code 4 formed by the laser marker to be readable, and enables easy mass production of a saggar 1 with a two-dimensional code and a method for forming a two-dimensional code on a saggar. This invention relates to a saggar with a two-dimensional code attached, and a method for forming a two-dimensional code on a saggar. Conventionally, two-dimensional codes (e.g., QR code®, barcode, DataMatrix® , etc.) have been formed on products using laser markers for individual product identification. This laser marker formation method utilizes the fact that a portion of the surface material of the product is removed by the laser marker, and that this portion of the surface material undergoes a thermal reaction and changes color. On the other hand, regarding individual management of saggars, several identification structures have been proposed, including one for firing saggars in which a groove constituting an identification code is formed in a predetermined part of the saggar (Japanese Patent Publication No. 6-94375), and another for firing saggars in which a reaction-preventing undercoat mainly composed of zirconia is formed on at least the label-forming surface of the saggar body made of ceramic, and an identification mark mainly composed of iron oxide powder with a purity of 90% or more