Uchiyama-gami Snow-Bleached Washi: Iiyama Kozo Paper Guide [2026]

Uchiyama-gami (内山紙, “Uchiyama paper”) is handmade kozo (paper mulberry) washi from the Uchiyama district of Iiyama, in the deep-snow Chikuma River valley of northern Nagano. Tradition holds that the craft began in the Genroku era, around 1690, when a local farmer learned papermaking in Mino — in present-day Gifu — and carried the technique home as a winter livelihood for snowbound farming villages. It has been made there, by hand, for more than three hundred years.

Its signature is yukizarashi (雪晒し, “snow bleaching”), also called kanzarashi: the kozo fibers are spread out on the snow so that reflected ultraviolet light and ozone bleach them to a warm, chemical-free white while leaving the long, strong mulberry fibers intact. The result is a durable, light-diffusing paper long prized for shoji screens that withstand snow-country glare, and historically for daifukucho — the thick merchant account ledgers of the Edo period. It was designated a National Traditional Craft in 1976.

This guide is for international readers deciding whether to buy genuine Iiyama kozo washi — for shoji repair, lamp and lighting work, art and printmaking, or calligraphy — and weighing how to get it shipped from Japan. We cover what the paper is, how it compares to other Japanese washi traditions, where Iiyama sits on the map, and the realistic purchase paths from outside Japan. One note up front: the dataset available for this article was thin, so we are explicit throughout about what is confirmed and what you should verify on the live listing.

Who this is for — and who should skip it

Product overview (from published specs)

The source data for this article was limited to the item identifier; live pricing and full spec fields were not present in the snapshot. The table below states what is confirmed, what comes from the craft tradition, and what you should verify on the listing before buying.

Sources for this guide: Amazon US search (primary, tag moonill-20), Amazon JP Global Store (secondary, tag moonill-22, sourced listing), and the Uchiyama-gami craft tradition. No maker-direct spec sheet was in the dataset.

Price snapshot across stores

Prices in USD are approximate and depend on the current exchange rate (¥150/USD baseline as of mid-2026). The JPY price is authoritative. Only an item identifier was available in our data; live pricing may have shifted since the writing date — confirm on the listing.

What it does well

Weaknesses and things to verify before buying

1. Price was not available in our data. Do not assume a figure — confirm the current price on the live listing before ordering.
2. Sheet size, weight, and count are unconfirmed. For shoji re-papering especially, measure your frame and verify the listing’s dimensions match.
3. Surface absorbency varies. For calligraphy or printmaking, test a single sheet before committing to a full series; washi behaves differently from sized art paper.
4. International shipping and customs add cost. A Japan-sourced order carries shipping and possible duties above local thresholds; budget for both.
5. Not for everyday printing. This is matte, textured, absorbent handmade paper — unsuitable for laser/inkjet office use.
6. Stock and listing continuity can change. Handmade craft listings appear and disappear; if the ASIN is unavailable, a proxy service or maker-direct order may be needed.

Conclusion — which buyer type are you?

Other ways to approach this purchase

Where this comes from

Nagano Nagano · Chūbu

Iiyama sits in the far north of Nagano, a landlocked, mountainous prefecture in central Japan. The city lies along the Chikuma River — the upper course of the Shinano, Japan’s longest river — in a valley walled by mountains that trap heavy winter snowfall. This is genuine snow country: the same climate band that, just over the prefectural border in Niigata, produces the snow-bleached ramie of Ojiya Chijimi. Snow here is not an obstacle to the craft; it is the tool.

That climate is exactly why papermaking took root. Farming stops when the valley is buried in snow, and the Genroku-era introduction of papermaking — traditionally dated to around 1690, when a local farmer is said to have learned the craft in Mino and brought it home — gave snowbound households a winter livelihood. The same snow that idled the fields became the bleaching agent: kozo fibers spread across the white surface are whitened by reflected ultraviolet light and ozone over the cold weeks, a chemical-free process now called yukizarashi.

What “still made here” means is best understood through the snow itself. The bleaching cannot be rushed or relocated; it depends on a deep, reliable snowpack and weeks of winter light, which ties the craft permanently to this valley. The technique that whitens the paper is the same one a Genroku farmer would recognize, and the long kozo fibers it preserves are why the paper outlasts ordinary stock.

“The same snow that buried the fields for the winter became the thing that whitened the paper — the obstacle and the tool were one and the same.”

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jpmono.com is curated by a Japan-based editorial team (working out of Toyama in the Hokuriku region and Nara in Kansai) and is independent. We do not take payment from the makers we feature; income comes from affiliate links. We do not physically test every product — we read maker specs and source listings.

This article was prepared with AI assistance and reviewed against the source data available at the time of writing. Where data was incomplete (notably pricing and exact sheet specifications), the gaps are stated plainly rather than filled by estimation.

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