5,000 years from a sharpened reed to a ball that rolls ink.
For most of history, writing meant dipping a sharpened stick or feather in ink every few words. Scribes in Egypt and Greece cut reeds, Europe wrote with goose feathers for a thousand years, and a Fatimid caliph asked for a pen that held its own ink. Then steel nibs, the fountain pen and, in the 1930s, a Hungarian journalist's rolling ball put a cheap, reliable pen in every pocket.
Cai Lun, an official of the Han court, is credited with improving and standardising papermaking from bark, hemp, rags and old fishing nets. Paper spread along the Silk Road to the Islamic world and, much later, to Europe.
Why it mattered. Pens are only half the story: cheap paper made writing an everyday act.
Flight feathers, usually from geese, became Europe's main writing tool. The hollow shaft held a small drop of ink, and a penknife recut the point as it wore down. Isidore of Seville mentions quills in the early 600s.
Why it mattered. The quill wrote most of Europe's books, letters and laws for over a thousand years. The word “pen” comes from the Latin penna, feather.
The Fatimid caliph asked for a pen that wouldn't stain his hands or clothes. According to his chronicler, Qadi al-Nu'man, he was given a pen that carried ink in a reservoir and let it out only when used for writing.
Why it mattered. It is the earliest known record of what we'd now call a fountain pen.
Ink made from oak galls and iron salts turns from pale to deep black as it reacts with air, and bites into parchment so it can't be scraped off. It was the standard ink for centuries.
Why it mattered. Many of the most important documents in Western history are written in it, but its acidity slowly eats the page.
Waterman patented a feed with fine channels that let ink out by capillary action while letting air in, so the pen stopped blotting. The popular story that a leaking pen cost him a contract may be a legend.
Why it mattered. Balancing ink out and air in is still how every fountain pen works.
Loud, a leather tanner, patented a pen with a small rotating steel ball held in a socket, for marking rough surfaces like leather. It was too coarse for writing letters and the patent lapsed.
Why it mattered. The rolling ball worked, but the right ink was still fifty years away.
Gray's telautograph used a pen connected to linkages that turned its movements into electrical signals. A second pen, miles away, copied the writing as it happened.
Why it mattered. An ancestor of the fax machine and of the digital stylus.
Sheaffer patented a fountain pen with a lever on the side. Flip it and it squeezed a rubber ink sac inside; let go and the sac drew in fresh ink from a bottle.
Why it mattered. No more eyedroppers: filling a pen became clean and quick.
A rolling ball and thick, fast-drying ink make the first pen that almost anyone can afford and nobody needs to refill.
1938
15 June 1938
The Bíró brothers' ballpoint
László and György BíróBudapest, Hungary
László Bíró, a journalist, noticed that newspaper ink dried fast without smudging, but was too thick for a fountain pen. With his brother György, a chemist, he paired thick, quick-drying ink with a ball in a socket and patented it in Britain.
Why it mattered. The right ink made the rolling ball practical. In many countries a ballpoint is still called a “biro”.
Fleeing the war in Europe, the brothers settled in Argentina, filed a new patent and began making “Birome” pens. Argentina celebrates Inventor's Day on 29 September, László Bíró's birthday.
Why it mattered. The ballpoint's first commercial home was in South America.
Royal Air Force (Miles-Martin Pen Company)United Kingdom
The British government licensed Bíró's design so RAF aircrew could write in unpressurised planes, where fountain pens leaked as the air pressure dropped.
Why it mattered. A war-time need proved the ballpoint was tougher than the fountain pen.
American businessman Milton Reynolds rushed out a ballpoint and sold it at Gimbels department store for $12.50, a lot of money at the time. Crowds queued and thousands sold on the first day, though many early pens leaked or skipped.
Why it mattered. It showed the enormous demand for a pen you never had to dip or fill.
Bich bought rights to Bíró's design and used Swiss watchmaking machines to make precise balls cheaply. The Cristal's clear hexagonal barrel shows the ink left, and a tiny hole in the barrel equalises air pressure.
Why it mattered. Bic says it has sold more than 100 billion Cristals: the pen became disposable.
Horie developed a pen with a tip made of bundled acrylic fibres, fed by capillary action from a water-based ink reservoir. The Pentel Sign Pen became hugely popular.
Why it mattered. The ancestor of today's felt-tips, fineliners and whiteboard markers.
Fisher patented a sealed refill with pressurised nitrogen behind the ink, so it writes upside down, underwater and in weightlessness. Astronauts used it from Apollo 7 in 1968. The popular tale that NASA spent millions on it while Soviet cosmonauts used pencils is a myth: Fisher paid for its development.
Why it mattered. It solved the ballpoint's dependence on gravity.
Pilot's FriXion pens use thermosensitive ink that turns clear when warmed. Rubbing with the pen's rubber tip makes enough heat from friction to erase it.
Why it mattered. A new trick for an old tool, from chemistry rather than mechanics.