Translations:Funzionamento di una penna stilografica/6/en

In fountain pens, this flow control is achieved thanks to the presence of the feeder channel, through which the ink can reach, due to the combined effect of gravity and capillarity, the height of the two wings of the nib. As long as the pen is not used, the surface tension prevents the ink from leaving the feeder and the nib, at least as long as they are correctly mounted and there is no other free passage than that of the feeder channel.