The writing mechanisms of ballpoint pens are similar to rollerball pens but there are several differences. While a ballpoint pen uses a thick oil-based ink, the rollerball pen uses liquid ink. This key difference makes the rollerball feel smother and more liquid, giving it a more fluid action which is comparable to a fountain pen. This fluidity also translates to a rollerball pen generally having a finer writing line. On the other hand, a ballpoint pen does have a more controlled action and lasts longer. A rollerball pen may cause slight to negligible bleeding onto the back of the paper depending on the quality of the paper and the pressure at which one writes.
We’ve provided scans exemplifying the stroke of each type of pen as well as the bleed onto the back of the paper. The paper which we’ve used is standard 80GSM computer printer paper.
It’s also worth noting that most rollerball pens need a cap to prevent the ink from drying out and that it’s very important to remember to cap your rollerball pen when it’s not in use. Ballpoint pens retract with a twist or a push which makes the cap unnecessary.
To summarise: the advantages of a rollerball pen
- Less pressure needs to be applied when writing.
- Smoother writing
- Writes finer lines