Mechanism having ink reservoir with electrodes for ink monitoring in ink printer devices

摘要

The monitoring of the ink supply in an ink reservoir occurs by measurement and evaluation of the change in resistance between two electrodes situated in the inside of the ink reservoir, the one electrode being formed by the hollow needle which produces a flow connection between the ink reservoir and ink supply system; the second electrode is formed as a needle and is situated in a wall of the reservoir and is arranged in an insulating ring which is formed by walls of the ink reservoir which are drawn up toward the inside.