Ballpoint pens distribute fast-drying ink without the ink drying in the pen itself. It uses a thick, oil-based ink that is dispersed by a small ball in a socket at the head of the pen. The ...
who turned instead to the ink to solve the problems of the ballpoint. Bíró’s ink was oil-based, and sat on top of the paper rather than seeping through the fibers. While gravity and pen angle ...
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