INK WRITING DEVICE AND METHOD FOR CONTROLLING THE INK FLOW AT THE TIP OF THE PEN NIB

摘要

The invention relates to an ink writing device comprising a tubular shaft, a storage reservoir for admitting the ink and which is provided with an aeration opening, a writing insert with a pen nib, an ink guiding system with a temporary storage reservoir for guiding the ink to the tip of the pen nib, a micro pump, a valve and a battery or accumulator as well as an electronic control of the ink flow. The ink writing device is characterized by at least two effective control circuits for regulating the ink flow from the storage reservoir (1) and the temporary storage reservoir (6) to the tip of the pen nib (10). A first control circuit is provided for refilling the temporary storage reservoir (6) by means of an electronically controllable micro valve (32) disposed between the storage reservoir (1) and the temporary storage reservoir (6) while the second control circuit is provided for adjusting the operational pressure at the writing insert (60) by means of a pressure sensor (31) and at least one micro pump (34) disposed in the main channel. Furthermore, the temporary storage reservoir (6) is embodied as a control capillary for the second control circuit and capillary traps (16) are arranged between each control capillary (17) and the main channel. The invention also relates to a method for controlling the ink flow at the tip of the pen nib.