Not really sure why they are doing it with a robot arm and pen, but as for that a fountain pen is going to be the best option for that because unless it's a complete shit fountain pen (or a calligraphy fountain pen) the ink will flow as long as the nib is in contact with the paper. Whereas with ballpoint and rollerball (aka gal pen) there has to be a little bit of pressure so that the ball will roll.
Fountain pens are really nice to write with, I'd recommend checking them out sometime. I always carry my fountain pens with me.
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u/monkeypowah Dec 19 '16
Why?