Translations:Funzionamento di una penna stilografica/7/en

The final stretch of the path is made by the ink by capillarity, passing through the channel in the slit between the two wings of the nib until it reaches the tip, and it is this same capillarity that holds it and prevents it from pouring. But as soon as you place the tip of the nib on a sheet of paper (or another suitable surface), it is the same surface tension, applied this time also to the contact between the tip and the paper, which causes the ink to deposit on the latter and continue to flow as you write through the slit, at least until (in the case of flexible nibs) you press too much widening it too, so as to interrupt the effect of capillarity and the consequent flow of ink.