| 摘要 |
<p>Disclosed is a printing device (1) which is provided with an ink circulation passage (4) for circulating, via an inkjet head (2), pigmented ink stored in an ink tank (3). A bypass passage (5) which bypasses the inkjet head (2) is connected to the ink circulation passage (4). When printing is performed, ink is circulated via an ink damper (10) of the inkjet head (2), and when the device is on print standby, the pigment particles in the pigmented ink are prevented from settling in the ink passage by circulation of the ink via the bypass passage (5). When the device is on print standby, cleaning liquid supply passages (13, 14) are opened and a cleaning pump (19b) is driven so that the cleaning liquid is sucked out from a cleaning liquid tank (12) and made to pass through nozzles in the inkjet head (2), whereby the pigmented ink inside the inkjet head (2) is cleaned.</p> |
