What the records show
Johannes Gensfleisch zur Laden, known as Johannes Gutenberg, was born in Mainz, probably around 1400, into a family connected to the city’s patrician class and its mint. Very little survives about his life. Most of what we know comes from legal and financial records, not from his own writing or from books carrying his name.
By the late 1430s he was in Strasbourg, where lawsuit papers suggest that he was working with partners on a technical project. Details are obscure, and the documents do not clearly describe printing. By about 1448 he was back in Mainz, and he is generally accepted as having established a printing workshop there around 1450.
A caution about the word “invention” applies here. Printing with movable type had existed in East Asia centuries earlier. Woodblock printing was established in China well before this, and clay and metal movable type were used in China and Korea, with the Korean Jikji of 1377 commonly cited as the oldest surviving book printed with metal type. There is no solid evidence that Gutenberg knew of these developments. His work is best described as an independent European achievement, not a first in world history.
Financing the workshop
A press was an expensive enterprise. Punches, matrices, molds, type, a press, paper and skilled workers had to be paid for long before any book was sold. Gutenberg borrowed money from Johann Fust, a wealthy Mainz financier. Documents associated with a later lawsuit mention loans of 800 guilders around 1450 and a further 800 guilders a couple of years later, together with interest. These figures are usually cited from the surviving court record, and the exact terms were disputed.
The relationship ended in conflict. In 1455, Fust took Gutenberg to court over the money. The outcome seems to have gone against Gutenberg, who lost the equipment or a part of the business to Fust. Fust worked with Peter Schoffer, a former Gutenberg employee, who became his partner and later his son-in-law. Together they continued printing in Mainz and produced a splendid Psalter in 1457, one of the first printed books to name its printers.
Making the 42-line Bible
The Gutenberg Bible, also called the 42-line Bible because most pages have 42 lines in two columns, is usually dated to about 1454 to 1455. A letter from the future Pope Pius II, Enea Silvio Piccolomini, written in March 1455, reports having seen pages of the Bible at Frankfurt, which helps date it.
The process behind it involved several skills.
- Type. Metal letters were cast in a mold from a lead-based alloy. The design imitated the heavy Gothic script used by scribes, with a large number of variant letters and joined forms, so the printed page resembled a handwritten manuscript. Estimates of the number of distinct characters are often given in the hundreds.
- Ink. A thicker oil-based ink was used to stick to metal. Scientific analyses of surviving pages have been used to study its composition, and the findings are still discussed.
- Materials. Most copies were on paper, and a smaller number were on animal skin. Producing the vellum copies alone would have required the skins of very many animals.
- Finishing. Printed pages were left with spaces for decoration. Capitals, borders and headings were often added by hand, so no two copies look exactly alike.
The edition is generally estimated at about 180 copies, though the figure is an inference and sources differ about the split between paper and vellum. Around 49 copies survive in whole or in part, a figure that is often quoted but should be taken as approximate. It consisted of two volumes and roughly 1,300 pages, depending on how copies are counted and bound.
What else came from the shop
Besides the Bible, the Gutenberg workshop is connected with smaller works: calendars, Latin grammar texts called Donatuses, and indulgence forms printed in the mid-1450s. A large dictionary-style work called the Catholicon, printed in Mainz in 1460, is traditionally attributed to Gutenberg but not signed by him, and its attribution is debated. Because he did not put his name on his products, what he printed and when is partly a matter of research and inference.
Later life and reputation
After the lawsuit, Gutenberg’s activities are poorly documented. In 1465, the Archbishop of Mainz gave him a court appointment with an annual income, suggesting some recognition. He died in 1468.
His fame grew later, as printing’s impact became clear. Printers’ guilds and national pride shaped how he was remembered, and competing claimants were put forward in the Low Countries and Italy. None has displaced him in the standard account, though careful historians stress that the story is built on a small number of records and that many details are interpretations.
Many of the skills in his workshop came from the traditions of metalworking techniques practiced by goldsmiths. The press itself borrowed from screw presses used elsewhere, and cheaper paper making supplied a cheaper surface than skin. The achievement lay in combining the elements into a repeatable system, which is why printing spread quickly after the Mainz workshop’s first products.