When you hold an authentic piece of Mino-yaki (Mino Ware), your fingertips immediately register that it is different from standard, mass-produced tableware. There is a distinct, physical depth to the patterns. At Kumohana, we pride ourselves on sourcing ceramics that showcase true technical ingenuity. One of the most fascinating methods used by master artisans like Izawa in Gifu Prefecture to achieve this is water-repellent pad printing (Suiseikyaku Hassui Tensha).
This clever technique bridges the gap between ancient pottery traditions and modern engineering, resulting in pieces that are as delightful to touch as they are to look at.
The Science Behind the Tactile Relief
Traditional ceramic decorating usually falls into two categories: hand-painting with a brush or applying flat, printed decals. While beautiful, both result in a completely smooth surface once glazed. Water-repellent pad printing introduces a three-dimensional element by playing with the physical properties of water and oil.
The process unfolds in three crucial steps:
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The Repellent Print: First, a specialized silicone pad transfers a highly detailed pattern onto the unfired or biscuit-fired clay using a special water-repellent, oil-based ink.
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The Glaze Defiance: Next, the entire piece is dipped into a liquid, water-based glaze. Because oil and water naturally repel each other, the glaze instantly beads and slides off the printed ink lines, adhering only to the bare clay around it.
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The Kiln Transformation: The piece is then fired in the kiln at temperatures exceeding 1,200°C. The glaze melts into a glossy, smooth coat, while the areas touched by the repellent ink remain bare, matte, and slightly recessed.
The result is a stunning, organic contrast—a glassy glaze paired with a raw, matte relief that defines the intricate features of characters like the Daruma or traditional geometric patterns.
Mino Ware Daruma Mug
Handcrafted in Japan using traditional Mino ware techniques
Shop This Daruma MugWhy It Demands an Artisan's Touch
While "printing" might sound automated, this technique requires immense human skill. Transferring a crisp design onto a curved, drum-shaped surface—like our Daruma Mug (now available at Kumohana) —without distorting the image requires precise pressure control. A fraction of a millimetre too deep, and the ink smudges; too light, and the glaze will cover the design.
Furthermore, because the ink and glaze interact biologically during the firing process, the kiln master must strictly regulate the temperature to ensure the red glaze remains vibrant without bleeding into the printed lines.
Mino Ware Daruma Mug
Handcrafted in Japan using traditional Mino ware techniques
Shop This Daruma MugAt Kumohana, we believe that true luxury lies in these unseen details. By understanding the intricate steps of water-repellent pad printing, every sip from your mug becomes an appreciation of modern Japanese craftsmanship.
