| 摘要 |
PROBLEM TO BE SOLVED: To prevent air from being entangled by reducing an invar chute of inkjet head internal pressure after pressurization purging, and to ensure the stability of the inkjet head internal pressure at the time of sucking. SOLUTION: Purging pressures Pa are applied to respective inkjet heads 1k-1 to 1k-6 for K colors. After a purging period tp in which ink liquids 6k are discharged from respective nozzles 2 of respective inkjet heads 1k-1 to 1k-6 has passed, a pressurizing valve 20-1 is closed, and the flow-in of air from an air tank 19 to an ink tank 12-1 is shut off. COPYRIGHT: (C)2006,JPO&NCIPI |
