Who Invented the Printing Press?

Gutenberg invented a system, not printing itself, and the difference is the whole story

Johannes Gutenberg invented the movable-type printing press in Mainz, in what is now Germany, around 1440. That is the standard answer and it is defensible, but it needs an immediate qualification: Gutenberg did not invent printing, and he did not invent movable type. Printing from carved wooden blocks was practised in China centuries earlier, Bi Sheng made movable type from fired clay in China between about 1039 and 1048, and Korean printers were casting movable metal type well before Gutenberg was born, producing the Jikji in 1377.

What Gutenberg did was assemble a working industrial system. His contribution was a set of interlocking inventions rather than a single device: a hand mould that could cast identical metal letters quickly and cheaply from a matrix, a metal alloy of lead, tin, and antimony that cast cleanly and stood up to repeated impressions, an oil-based ink that adhered to metal type instead of beading off it, and a screw press adapted from wine and paper making that applied even pressure across a full page. Any one of these on its own is a curiosity. Together they are a manufacturing process.

The reason Gutenberg still counts, despite the earlier East Asian work, is that his system scaled and spread with extraordinary speed. Within roughly fifty years of his press appearing, printing had reached around 270 cities across central, western, and eastern Europe, and presses had produced more than twenty million volumes. Neither the Chinese nor the Korean inventions produced that kind of chain reaction, for reasons that are about scripts, economics, and institutions rather than about cleverness.

What Gutenberg actually invented

The single most underrated piece of the Gutenberg system is the adjustable hand mould. To print with movable type you need thousands of pieces of type, all exactly the same height and all exactly square, so that a whole page locked into a frame prints evenly. Carving them individually is hopeless. Gutenberg's mould held an engraved copper matrix, took a pour of molten alloy, and released a finished letter within seconds, dimensionally identical to the last one. A printer could cast a fresh sort as fast as he ran out of it. This is the step that turns type from an artefact into a supply.

The alloy mattered too. Pure lead is too soft and shrinks unhelpfully as it cools. Gutenberg's mix of lead, tin, and antimony cast sharply, filled the mould, and survived thousands of impressions without deforming. Type metal in roughly this recipe stayed in use into the twentieth century, which is a strong indication that he got it close to right on the first serious attempt.

Ink was a third problem. The water-based inks used by scribes and by woodblock printers sit badly on metal, gathering into droplets rather than coating the face of the letter. Gutenberg used an oil-based ink, closer to the varnish-bound paints of contemporary panel painters, which clung to metal and transferred cleanly to paper under pressure. Surviving copies of his work still show a dense, glossy black.

The press itself was the least original element and Gutenberg would not have claimed otherwise. Screw presses were already familiar from wine making, olive oil production, and papermaking. His adaptation gave a flat, even, vertical impression over the whole forme, with a moving carriage so a page could be slid in and out. It is the combination that is the invention.

The product everyone knows is the 42-line Bible, printed in Mainz in the 1450s on both paper and vellum. It is not a rough prototype. It is a deliberately beautiful book, laid out to compete with the finest manuscripts of its day, which tells you that Gutenberg understood exactly which market he was entering.

The East Asian record, which came first

Woodblock printing, where a whole page of text and image is carved in relief on a single block, was practised in China for centuries before Gutenberg, and was used to print Buddhist texts, calendars, and eventually paper money. For a page that will be reprinted many times without alteration, a woodblock is not a poor technology at all. It is durable, cheap to store, and reproduces calligraphy and illustration together, which is a real advantage in a Chinese context.

Movable type is documented in China from the eleventh century. Bi Sheng, an artisan of the Song dynasty, made individual characters from sticky clay and fired them, setting them in an iron frame with a bed of pine resin, wax, and paper ash. He had tried wood first and rejected it because the grain and the swelling of soaked wood made impressions uneven. We know this because the scholar-official Shen Kuo described the process in his Dream Pool Essays, which is also why Bi Sheng is one of the very few commoners of the period whose name survives at all. The date usually given is between 1039 and 1048.

Korea went further. Goryeo printers were casting movable type in metal in the fourteenth century, and the surviving proof is the Jikji, an anthology of Buddhist teachings compiled by the monk Baegun, printed at Heungdeok Temple in Cheongju in July 1377. Only the second volume survives, and it is held today at the National Library of France in Paris. UNESCO confirmed it in September 2001 as the world's oldest extant book printed with movable metal type and inscribed it on the Memory of the World Register. It predates Gutenberg's press by roughly sixty years.

Whether any knowledge of this reached the Rhineland is unknown and probably unknowable. There were trade and diplomatic routes across Eurasia, and the general idea that one could print rather than copy was not secret. But there is no evidence of transmission of technique, and Gutenberg's specific solutions, particularly the hand mould and the oil-based ink, do not resemble the East Asian ones. The mainstream position is independent invention.

Why Gutenberg still counts

The most cited reason is the writing system. An alphabet needs a small character set, perhaps a few hundred sorts once you include capitals, ligatures, and punctuation. Chinese requires thousands of distinct characters, and a working font means casting and storing and then finding all of them. That is not an argument that movable type is impossible for Chinese, since Korean and Chinese printers demonstrably did it, but it changes the economics sharply. In Europe the marginal cost of the next book fell dramatically once a shop owned a font. In East Asia woodblock remained competitive for much longer.

The second reason is the surrounding economy. Fifteenth-century Europe had rising urban literacy, universities with a hunger for standard texts, a paper industry that had already displaced parchment for everyday use, merchant capital willing to fund speculative ventures, and a fragmented political landscape in which a printer who annoyed one authority could move to another city. Within a generation the press had become a business with investors, apprentices, distribution networks, and trade fairs.

The third reason is what happened next. The press did not simply make books cheaper. It made identical copies, which meant that a scholar in Basel and a scholar in Kraków could argue about page 43 of the same edition. It made errors reproducible and therefore correctable across editions, it made vernacular publishing viable, and within seventy years it was the delivery mechanism for the Reformation. Historians disagree sharply about how much causal weight to put on the technology as against the ideas, and that debate is very much alive, but nobody disputes that the scale changed.

So the fair answer to the question is layered. Printing was invented in China. Movable type was invented in China. Movable metal type was in use in Korea by the fourteenth century. Gutenberg invented the mass-production system that made printing an engine of European life, and he did it independently. Crediting him with inventing printing outright is wrong. Crediting him with nothing because Bi Sheng got there first is equally wrong.

What we do not know about Gutenberg

Gutenberg himself is thinly documented. Much of what survives about his life comes from lawsuits, most famously the litigation with his financier Johann Fust, which appears to have cost him control of his own workshop and equipment. He left no memoir, no technical treatise, and no signed statement of what he invented. The 42-line Bible does not carry his name.

This is why the phrase 'around 1440' is standard. There is no dated moment of invention, only a range inferred from documents, from the dating of surviving printed fragments, and from the sequence of his known legal disputes. Claims of a precise year should be treated with suspicion. Competing national claims, including for Laurens Janszoon Coster in Haarlem, have been advanced over the centuries and are not supported by the surviving evidence, though they explain some of the older literature you may encounter.

Frequently asked questions

Who invented the printing press?

Johannes Gutenberg, in Mainz, around 1440. He invented the movable-type printing system: an adjustable hand mould for casting identical metal letters, a lead-tin-antimony type alloy, an oil-based ink that adhered to metal, and a screw press adapted to give an even impression. He did not invent printing itself, which existed in China centuries earlier.

Did the Chinese invent printing before Gutenberg?

Yes. Woodblock printing was practised in China for centuries before Gutenberg, and Bi Sheng invented movable type made from fired clay between about 1039 and 1048, during the Song dynasty. The process is described by Shen Kuo in his Dream Pool Essays. Korean printers were casting movable metal type in the fourteenth century.

What is the Jikji and why does it matter?

The Jikji is a Korean Buddhist anthology printed with movable metal type at Heungdeok Temple in Cheongju in July 1377, roughly sixty years before Gutenberg's press. UNESCO confirmed it in September 2001 as the world's oldest surviving book printed with movable metal type. The surviving volume is held at the National Library of France in Paris.

If others printed first, why does Gutenberg get the credit?

Because his system scaled. Alphabetic scripts need only a few hundred sorts rather than thousands of characters, and fifteenth-century Europe had cheap paper, urban literacy, universities, and merchant capital. Within about fifty years printing had reached roughly 270 European cities and presses had produced more than twenty million volumes. That chain reaction, not priority of invention, is what he is credited with.

Why is the date always given as 'around 1440'?

Because there is no dated record of the invention. Gutenberg left no technical account of his work, and most of what survives about him comes from lawsuits, including the dispute with his financier Johann Fust. The date is inferred from documents, from surviving printed fragments, and from the sequence of his legal troubles, so any source giving a precise year is overstating the evidence.

Further reading

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Sources consulted

• Wikipedia, 'Printing press'
• Wikipedia, 'Jikji'
• Wikipedia, 'Bi Sheng'
• Open Library record: Elizabeth L. Eisenstein, The Printing Revolution in Early Modern Europe

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