1,200 years from carved wooden blocks to ink tanks, laser drums and machines that print in plastic.
For centuries, printing meant pressing inked type or carved blocks onto paper, and every copy of every page had to be set up by hand. In the twentieth century computers needed a way to put their results on paper, so engineers built printers that hammer pins, boil ink, spray drops and draw with static electricity and light. Today the same idea of placing tiny dots has moved into homes across India and even into three dimensions.
Carved wooden blocks in China, movable type in China and Korea, then Gutenberg's press in Europe. Printing reaches India at Goa in 1556.
868
11 May 868
The oldest dated printed book
Wang Jie (who paid for it) and unknown block cuttersDunhuang, China
The Diamond Sutra is a scroll printed from carved wooden blocks. It carries a date equal to 11 May 868, which makes it the oldest dated printed book known. A whole page was carved into one block, inked and pressed onto paper.
Why it mattered. It shows the core idea every printer still uses: ink put down in a pattern, the same way, copy after copy.
Bi Sheng made separate characters from baked clay that could be arranged into a page, printed, then taken apart and reused. We know about him from the writer Shen Kuo. His type was not widely used, but the idea was new.
Why it mattered. Reusable pieces that make up any page are the ancestors of the dots a modern printer arranges.
Jikji, a Korean Buddhist text, was printed with movable metal type in 1377. It is the oldest surviving book made this way, older than Gutenberg's Bible. The only known copy is in the National Library of France.
Why it mattered. Metal type was stronger and more even than wood or clay.
Gutenberg combined metal type cast in a hand mould, an oil-based ink and a screw press. His Bible was finished around 1455. Printing spread across Europe within fifty years and books became far cheaper.
Why it mattered. It made printing fast and cheap enough to change how knowledge spread, though every page still had to be set by hand.
Jesuits, with printer Juan de BustamanteSt Paul's College, Old Goa, India
A press on its way from Portugal to Ethiopia stayed in Goa instead, and printing began at the Jesuit college of St Paul in 1556. Its first known pieces were religious texts. Printing in Indian languages followed over the next decades.
Why it mattered. It began India's own history of print, which leads to today's crowded print shops and home ink tanks.
Babbage designs a printer for his calculating engine, Carlson invents xerography, and ink is first squirted in continuous jets.
1847
1846–1849
Babbage designs a printer for his engine
Charles BabbageLondon, England
Babbage designed Difference Engine No. 2 between 1846 and 1849, with a printing unit that would print results onto paper and press them into soft moulds for making printing plates. It was never built in his lifetime. London's Science Museum finished building the engine, and then its printer in 2002.
Why it mattered. It was perhaps the first design for a computer printer: a machine that writes its own answers, with no person copying them out.
Chester Carlson and Otto KorneiAstoria, New York, USA
Carlson and Kornei rubbed a sulfur-coated zinc plate to charge it, shone light through a glass slide reading "10-22-38 Astoria", then dusted it with powder. The powder stuck where the light hadn't reached. Carlson called the process electrophotography.
Why it mattered. Charge, light and powder is exactly how every laser printer works today.
The first commercial devices that wrote with a continuous jet of ink came from Siemens in 1951. They were used for recording instruments, like chart recorders for medical signals, rather than for printing pages.
Why it mattered. It proved that a fine jet of ink could be steered to write.
Twenty years after Carlson's first copy, his idea became the Xerox 914, the first automatic plain-paper office copier. It made copies in seconds on ordinary paper and was a huge success.
Why it mattered. It turned xerography into a machine, with a drum, toner and a fuser: the laser printer's direct parent.
Thermal heads, tiny calculator printers, dot-matrix pins and the first laser printers turn computer output into paper.
1965
1965 and 1969
The thermal print head
Texas InstrumentsDallas, Texas, USA
Texas Instruments invented the thermal print head in 1965. Its Silent 700 terminal of 1969 printed on heat-sensitive paper with no ink at all, and became the first commercial thermal printing system.
Why it mattered. The same idea prints nearly every shop receipt and bus ticket today.
Shinshu Seiki launched the EP-101, a tiny electronic printer only 16 cm wide that was soon built into desk calculators. Later printers based on it were sold as the "son of EP", which is where the name Epson comes from.
Why it mattered. It showed that a printer could be small and cheap enough to go inside other machines.
Centronics, led by Robert HowardHudson, New Hampshire, USA
The Centronics 101, shown in 1970, printed 165 characters a second by firing a column of seven wire pins through a ribbon. Its plug became the standard printer connector for decades. Japan's OKI had shown a wire dot printer a little earlier, in 1968.
Why it mattered. Dot-matrix printers were how most computer users printed for twenty years, and they still print passbooks and forms.
Gary StarkweatherXerox, Webster, New York, and Xerox PARC, California, USA
In 1969 Starkweather, an optics engineer at Xerox, had the idea of drawing on a copier's drum with a laser instead of a photo of a page. He moved to Xerox PARC in 1971 and built a working laser printer there, which later became the Xerox 9700.
Why it mattered. It let a computer draw any page, letters or pictures, at high speed.
IBM's 3800 printed 215 pages a minute at 240 dots per inch on continuous paper. It was a room-sized machine for big computer centres. Xerox followed with its 9700 in 1977.
Why it mattered. Businesses could now print bills and statements by the million.
At Canon, a hot soldering iron touched a syringe needle full of ink, and drops shot out of the tip. Canon's researchers turned this into the Bubble Jet idea and filed a basic patent in 1977. At about the same time, John Vaught's team at HP found that thin-film resistors could fire ink drops too.
Why it mattered. Boiling ink with a tiny heater became the thermal inkjet, the most common home printer in the world.
Bubble jet and laser printers shrink and get cheap. Colour inkjets reach photo quality, and 3D printing is born.
1984
The first mass-market inkjet: HP ThinkJet
Hewlett-PackardCorvallis, Oregon, USA
HP's ThinkJet (short for thermal inkjet) was the first low-cost, mass-produced thermal inkjet printer. The printhead was built into a throw-away ink cartridge, so each new cartridge brought fresh nozzles.
Why it mattered. Quiet, cheap inkjets began replacing noisy dot-matrix printers at home.
Hewlett-Packard, with a Canon print engineUSA and Japan
The first LaserJet printed 8 pages a minute at 300 dots per inch and cost $3,495. Inside was Canon's CX engine, with the drum and toner in one replaceable cartridge.
Why it mattered. Laser quality came to ordinary offices, and the desktop publishing boom followed.
Chuck Hull applied for a patent on stereolithography, which builds an object layer by layer by hardening liquid plastic with ultraviolet light. The patent was granted in March 1986.
Why it mattered. It started 3D printing: the idea of a printer that builds solid things.
Scott Crump filed a patent on building objects from melted plastic squeezed out of a moving nozzle, laying down one layer on top of another. The same year he and his wife Lisa founded the company Stratasys to sell the machines.
Why it mattered. FDM is the kind of 3D printer found in schools and homes today.
Epson's Stylus Color was the world's first 720 dpi colour inkjet. It used Epson's Micro Piezo head, which squeezes drops out with a bending crystal instead of boiling them.
Why it mattered. Home printers could now print photographs people were happy to keep.
From the first room-sized laser printer to home machines, resolution rose fivefold.
1976 IBM 3800: 240 dpi
1984 HP LaserJet: 300 dpi
2008 1,200 dpi widely available for homes by 2008
2005 – today
Ink tanks and 3D at home
Open-source 3D printers spread, and refillable ink tank printers make pages cheap in India and across Asia.
2005
2004–2005
RepRap: a 3D printer that prints itself
Adrian Bowyer and the RepRap communityUniversity of Bath, England
Bowyer proposed RepRap in 2004, and the project got going at the University of Bath in 2005: an open-source, cheap 3D printer that could print many of its own parts. Its Darwin model of 2008 printed about half of its own plastic parts, and hundreds of people worldwide joined in.
Why it mattered. Open designs made hobby 3D printers cheap, which is why schools and makers now have them.
Epson, followed by other makersIndonesia, then India and the rest of Asia
Epson launched its L100 and L200 ink tank printers in Indonesia in 2010, designed for emerging markets, then brought them to India and other Asian countries. Reports put the Indian launch in 2011 at about ₹9,000. Other makers followed with their own refillable models.
Why it mattered. Bottled ink cut the cost of a page from rupees to paise, which suits students, shops and small offices.