| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an ink supply device and a printing device in which pump cleaning (cleansing) or replacing is not needed.SOLUTION: An ink supply device comprises: an ink storing container having a cylindrical wall; a piston mounted as slidable while maintaining air-tightness inside the cylindrical wall of the ink storing container; a piston drive part for sliding the piston; an ink discharge port mounted at a position not interfering with sliding of the piston in the ink storing container; an ink discharge path connected with the ink discharge port; and an ink discharge port side check valve mounted in the ink discharge path for preventing reverse flow of the ink to the ink storing container.</p> |
