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Sistemi di caricamento/en

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In order to write it is necessary to unscrew the bottom and slightly withdraw the shaft attached to it, so as to retract the piston from its blocked position and re-enable the flow of ink towards the nib. Closing the bottom will stop the ink flow again, thus preventing leaks.
== Direct compressio compression of the ''sac'' ==
At the beginning of the 1900's, there was a great impulse in the search for a system that would allow the filling operation to be carried out automatically. During this period, a series of filling systems began to be produced, in which the ink was kept inside an elastic rubber sac. In this way it was possible to carry out the loading by compressing the empty sac, so as to exploit the subsequent expansion of the same to suck the ink from the bottle by immersing the nib assembly.

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