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(Creata pagina con "The filling principle derives from the dropper principle, the pen tip is immersed in the ink and the pump is pressed, its expansion causes a depression that causes the ink to...") |
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Versione attuale delle 23:16, 4 set 2019
The filling principle derives from the dropper principle, the pen tip is immersed in the ink and the pump is pressed, its expansion causes a depression that causes the ink to flow into the body of the pen. The innovation created by this filling system consists of the presence of the breather tube connected to the nib unit and directly connected to a duct in the ventilation hole of the nib.