BALLPOINTS:

 A ballpoint pen is equipped with a bullet between about 0.5 - 1 mm and a container of viscous and fast-drying ink paste.

The Ball surface is filled with small pits that capture ink paste and transports

it from the refill to the paper.

 The first functioning ballpoint pen made by Hungarian journalist László Bíró 1938's after he noticed

that the ink in the newspapers is not smeared as usual ink, and began experimenting with using it in a pen.