Glass paste

JP2025077192APending Publication Date: 2025-05-19AGC INC
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Patent Information

Application Number
JP2023189204
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-11-06
Publication Date
2025-05-19

AI Technical Summary

Benefits of technology

【0014】 本発明に係るガラスペーストによれば、簡易なプロセスで、基板表面を隙間なく、かつ良好な平坦性をもって被覆可能なアンダーグレーズ層とできる。そのため、例えばサーマルヘッドプリンタの製造コスト削減に大きく貢献できる。また、2種以上のアンダーグレーズ層の滑らかな接合も簡易なプロセスで実現できる。

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Abstract

To provide a novel glass paste allowing formation of an underglaze layer that can cover a substrate surface without gaps and with excellent flatness through a simplified process.SOLUTION: A glass paste comprises a vehicle and a glass powder, wherein the vehicle is an organic vehicle containing an organic solvent, and the glass paste contains 0.1 to 5.0 pts.mass of at least one metal powder selected from molybdenum metal powder and molybdenum alloy powder based on 100 pts.mass of the glass powder, or the glass powder contains 0.5 to 3.0 mass% of MoO3, calculated as oxide-based mass%.SELECTED DRAWING: Figure 2
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Claims

1. A glass paste comprising a vehicle and a glass powder, the vehicle is an organic vehicle containing an organic solvent, The glass paste further contains at least one metal powder selected from the group consisting of molybdenum metal powder and molybdenum alloy powder, The content of the metal powder relative to 100 parts by mass of the glass powder is 0.1 to 5.0 parts by mass.

2. A glass paste comprising a vehicle and glass powder, the vehicle is an organic vehicle containing an organic solvent, The glass powder contains, in mass % on an oxide basis, MoO ３ A glass paste comprising 0.5 to 3.0 mass % of the above.

3. The average particle diameter D of the metal powder ５０ The glass paste according to claim 1, wherein the thickness is 0.5 to 20 μm.

4. The glass powder has a content of, expressed as mass% on an oxide basis, Yes ２ :47~55%, B ２ O ３ :0~7%、 Na ２ O:0~1%、 MgO: 0 to 3%, CaO: 8-20%, BaO: 8-27%, SrO: 0-20%, <h2 style=";text-align:left;direction:ltr">Al<h2 style=";text-align:left;direction:ltr"> ２ <h2 style=";text-align:left;direction:ltr"> O<h2 style=";text-align:left;direction:ltr"> ３ <h2 style=";text-align:left;direction:ltr"> :5~122%、 ZnO: 0 to 3%, and The glass paste according to claim 1 or 2, further comprising ZrO: 0 to 3%.

5. 3. The glass paste according to claim 1, which has an expansion rate of 1.0% or more when applied onto a substrate and heated at 1255° C. for 1 hour.

6. 3. The glass paste according to claim 1, which is applied onto a ceramic substrate and used to smooth the surface of the ceramic substrate.

7. The glass paste according to claim 1 or 2, which is used for an underglaze layer of a printer head.

Citation Information

Patent Citations

  • Manufacture of glazed substrate for thermal head

    JP1984230771A

  • Manufacture of glazed ceramic substrate for thermal head

    JP2000103105A