How Does A BallPoint Pen Work

How Does A Ballpoint Pen Work

National Ballpoint Pen Day is June 10, 2021

Did you ever wonder how a ballpoint pen works?

First patented by Laszlo Biro, the ballpoint pen uses a small rotating ball to disperse ink as you write.
The colored paste passes through the pen onto the ball. The larger the ball, the thicker the line the pen makes.

by Faber-Castell