| 摘要 |
PURPOSE:To certainly prevent the contamination of the titled apparatus or the short circuit of an internal circuit due to the leakage of ink at the time of the replacement of an ink storage means and to prevent the evaporation of the ink from a liquid amount meter, by providing a hermetically closing means for blocking the liquid amount meter from the atmosphere. CONSTITUTION:When an ink cartridge 1 is pulled off to a b-direction for the purpose of replacement, a lever 4 is revolved to a b'-direction by the force of a compression spring 6 and a cap 5 is fallen. When the cap 5 is adjusted so as to hermetically close an opening part 2a before the cartridge 1 is separated from a flow passage 1a, the liquid surface in a manometer 2 is lowered by the atmospheric pressure applied from the opening part 2a and the leakage of ink I from the ink flow passage from the side of a recording head or from the side of the cartridge 1 is prevented. When a new ink cartridge is pushed in to an a-direction to be mounted to the ink flow passage 1a, the cap 5 is detached from the opening part 2a and the liquid surface of the ink In the manometer 2 moves so as to coincide with the liquid surface in the cartridge. Therefore, if the resistance value between electrodes 3, 3 is detected, the ink residual amount in the cartridge 1 can be detected. |
