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Overglaze vs. Underglaze Pad Printing: Which Is Best for Your Ceramics?

Overglaze vs. Underglaze Pad Printing: Which Is Best for Your Ceramics?

Oct 28, 2026

Ceramic pad printing is widely used to decorate cups, bowls, plates, saucers, and other ceramic products with logos, patterns, and multicolor designs.

However, not all ceramic printing processes are the same. Two important decoration methods are overglaze printing and underglaze printing. Although both can use pad printing technology, they differ in printing stage, firing temperature, ink requirements, and final surface properties.

Understanding these differences can help ceramic manufacturers choose the right printing process, equipment, and consumables for their production needs.

1. What Is Overglaze Pad Printing?

Overglaze pad printing applies decorative patterns to the surface of ceramic products that have already undergone glaze firing.

The design is transferred onto the glazed ceramic surface using a silicone pad. The decorated product then undergoes an additional firing process to fix the ceramic decoration.

ceramic printing

Typical Overglaze Printing Process

Glaze Firing → Pad Printing → Decoration Firing

Overglaze decoration is commonly fired at approximately 600–900°C, depending on the ceramic pigment, glaze, and decoration requirements.

Because the decoration is fired at a lower temperature than many high-fired ceramic bodies, overglaze printing can accommodate a relatively wide range of decorative colors.

Advantages of Overglaze Printing

  • Suitable for decorating already glazed ceramic products.
  • Offers relatively flexible color options for decorative designs.
  • Suitable for logos, decorative patterns, and multicolor applications.
  • Can be integrated into a separate ceramic decoration stage.

Typical Applications

Overglaze printing can be used for decorative porcelain, ceramic mugs, promotional ceramic gifts, and branded ceramic products.

However, because the decoration remains on the glaze surface, its resistance to abrasion and repeated washing depends on the ceramic ink formulation, firing conditions, and final product quality.

2. What Is Underglaze Pad Printing?

Underglaze pad printing transfers decorative patterns onto an unglazed ceramic body before the final glazing process.

After printing, the ceramic product is covered with a suitable glaze and fired. The decoration becomes positioned beneath the glaze layer.

ceramic printing machine

Typical Underglaze Printing Process

Ceramic Body Preparation → Pad Printing → Glazing → Final Firing

For many high-fired porcelain applications, firing temperatures are approximately 1200–1400°C, although lower-temperature ceramic systems also exist.

Underglaze ceramic pigments must be compatible with the selected glaze and withstand the required firing conditions.

Advantages of Underglaze Printing

  • The decoration is protected beneath the glaze layer.
  • Offers good potential for wear-resistant ceramic decoration.
  • Produces a smooth, glazed surface over the printed pattern.
  • Suitable for integration into ceramic manufacturing before final glazing.

Typical Applications

Underglaze printing is widely applicable to ceramic tableware, bowls, plates, saucers, and other products requiring decoration beneath a protective glaze.

The final printing result depends on ceramic pigment stability, glaze compatibility, firing conditions, and the quality of the printing process.

3. Overglaze vs. Underglaze Printing: Key Differences

Comparison 对比项目 Overglaze Printing 釉上彩 Underglaze Printing 釉下彩
Printing Surface 印刷表面 Glazed ceramic surface 已烧成的釉面 Unglazed ceramic body 未上釉的胚体
Printing Stage 印刷阶段 After glaze firing 釉烧完成后 Before final glazing 最终施釉前
Typical Firing Temperature 典型烧成温度 Approx. 600–900°C 约600–900°C Approx. 1200–1400°C 约1200–1400°C
Color Options 色彩表现 Wider range of decorative colors 装饰色彩相对丰富 High-temperature-stable colors 需使用耐高温色料
Durability 耐磨表现 Depends on decoration and firing quality 取决于装饰层及烧成质量 Glaze provides additional protection 釉层提供额外保护
Surface Finish 表面效果 Decoration on the glaze surface 图案位于釉面 Decoration beneath the glaze 图案位于釉层下
Production Process 生产工艺 Glaze firing → Printing → Decoration firing
釉烧 → 移
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