Daily Learning Experience · Art
Art · Edo, Japan · 1831

Under the Wave: You Are the Printer

It is not yet light. You are the surishi — the printer — in the workshop of Nishimuraya Yohachi, whose shop sign reads Eijudō. On the bench in front of you lie seven cherrywood blocks, carved on both sides. Nobody has ever pulled this print before. In about two hundred years it will be, by most counts, the most reproduced image ever made by a human being. This morning it is just a job.

Your hands smell of rice paste and pine soot. The paper is damp, stacked under a wet cloth since last night. The old man who drew this is seventy-one, signs himself “Iitsu, formerly Hokusai,” and has changed his name more than thirty times. He has drawn a wave that is about to eat three boats.

You are going to make this print the way it was really made: mix the blue, register the paper, rub the baren, and pull eight impressions from seven blocks — one colour at a time — until the wave stands up out of the paper.

Everything you see here is drawn from scratch in code — a hand-coded interpretation of the print, not a photograph of it — so you can take it apart layer by layer.

Bench one · the colour

The Blue That Was an Accident in Berlin

Around 1706, in Berlin, a colour-maker named Johann Jacob Diesbach was trying to cook up a red — a crimson lake made from cochineal insects. He borrowed potash from the laboratory of the alchemist Konrad Dippel, who distilled animal oils and bone. The potash was contaminated. Diesbach's red came out blue. Not a pale blue: a deep, ferocious, unstoppable blue.

A century later it reaches Japan through Dutch and Chinese traders at Nagasaki, where printers call it bero-ai — “Berlin blue.” At first it is far too expensive for a cheap street print. Around 1829 the price collapses, and suddenly a publisher can afford to build a whole series around it. Which is exactly what Eijudō does.

Here are the three blues on your shelf. Drag the slider to send them through a hundred years of sunlight on a shop wall.

Dayflower blue (aigami)Squeezed from petals. Gorgeous. Runs away from light like a ghost.
Indigo (ai)The old reliable. Softens and greys over the years.
Bero-ai (Prussian blue)Iron and cyanide, made by accident. Barely moves.

At zero years all three look magnificent. That is the trap.

This is why the wave is still blue. Hokusai's printers did use the fugitive colours too — the pink clouds and yellow boats in most surviving impressions have quietly faded to nothing. The sea survived because of a spoiled batch of potash in Berlin.

Bench two · the printing

Eight Pulls, Seven Blocks, One Wave

No press. No machine. A Japanese print is made by laying damp paper onto an inked block and rubbing the back of it with a baren — a coil of cord inside a bamboo-sheath disc that fits your palm. You do it once per colour, and the paper has to land in exactly the same place every single time or the wave gets a shadow.

That is what the kentō marks are for: a notched corner (kagi) and a straight edge-stop (hikitsuke) cut into every block. Line the sheet up, and eight separate colours land on top of each other within a hair.

Your turn. Drag the sheet of paper until it clicks into the corner mark — then press and scrub across the back to rub the colour in. Rush the registration and everyone in Edo will see it.

    Colour order is taken from the British Museum's technical study of 111 surviving impressions: at least seven blocks, eight printing steps, two of them dark blue — one for the outlines, one for the deep water.

    Bench three · the long run

    Now Print It Eight Thousand Times

    This is a cheap popular print, sold from a street stall for roughly the price of a bowl of noodles. Eijudō does not want one wave. Eijudō wants thousands. And cherrywood, no matter how hard, is not forever.

    In 2020 a scientist at the British Museum, Capucine Korenberg, put photographs of 111 surviving impressions side by side and found the cracks — tiny breaks in the title cartouche, a split across Mount Fuji's slope, a snapped line in the wave — always appearing in the same order. That gave her something nobody had before: a chronology. Scrub the wheel and watch the blocks die.

    The long swell

    From a Spoiled Pot of Potash to $2.8 Million

    Things that are true

    Six Facts to Keep in Your Pocket

    Try it at home: the potato-block wave

    The workshop examination

    Are You Ready to Be Trusted With the Blocks?

    All artwork here is drawn in code as an original interpretation of a public-domain print. Facts drawn from the British Museum, the Metropolitan Museum of Art and published pigment research.