Printing ink needed a different penSourced
The ink would not flow through a fountain-pen tip
Journalist László Bíró noticed the quick-drying ink of newspaper printing. Its viscosity prevented it from flowing properly in a fountain pen. Working with his chemist brother, he developed a rotating ball tip to transfer special ink to paper. The material required a different delivery mechanism.
A useful ink needed a compatible point.
Summary / translation: Unbubly · CC BY-SA 4.0
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László Bíró · Wikimedia contributors
Adapted, summarized and translated from the source. Adapted text is also available under CC BY-SA 4.0.
Reviewed: 2026-10-05