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AssigneeCanon Finetech Inc.
InventorsNoritaka Ota, Yuichi Takahashi, Daisuke Nakamura, Takeshi Miura, Kazuo Haida
Estimating the term…
An ink-feeding device is provided in which the pressure applied to the ink in the printing head can be adjusted arbitrarily irrespective of the relative positions of the ink container and the printing head. Inside the sub-tank 80, a pressure-adjusting pump 82 is installed for applying a suitable pressure to many nozzles 22Kn of the printing head 22K. This pressure-adjusting pump 82 is placed a little above the bottom face of the sub-tank 80 at a prescribed distance from the bottom face. Thereby the pressure-adjusting pump 82 is immersed in the ink held in the sub-tank 80. A drive unit 83 for driving the pressure-adjusting pump 82 is placed above the sub-tank 80. On the upper wall of the sub-tank 80, an air-vent valve 84 is fixed to bring the inside pressure in the sub-tank 80 to an atmospheric pressure. The inside pressure in the sub-tank 80 is made equal to the atmospheric pressure by opening the air-vent valve 84.
An ink-feeding device comprising an ink container for holding an ink to be fed to a printing head for ejecting an ink, and an ink flow channel for connecting the ink container to the printing head;
An ink-feeding device comprising an ink container for holding an ink to be fed to a liquid chamber of a printing head having a nozzle and communicating with the liquid chamber for ejecting the ink;
An ink-feeding device comprising a tank for holding an ink and being connected to a nozzle of a printing head for ejecting the ink;
A pressure-generating method for generating a pressure in a printing head of an ink-feeding device which has the printing head constituted of an ink-ejecting nozzle and a liquid chamber communicating to the nozzle, and an ink container for holding an ink to be fed to the liquid chamber;
Dependencies are inferred from the claim text.