| 摘要 |
PROBLEM TO BE SOLVED: To enable high-speed high-quality printing by an inkjet recorder by maintaining an interface state of an ink nozzle in a proper state. SOLUTION: A solenoid valve 13 is provided, whereby a through hole 131a as a passage of ink is closed because a magnetic ball 133 is pressed against a through hole outlet diameter-expanded part 131b by an elastic force of a spring 132 when an inkjet head 11 is in a standby state of operation. While the inkjet head 11 is in a printing state, the through hole 131a is closed because the magnetic ball 133 is pressed against the diameter-expanded part 131b by a magnetic field generated when an electromagnetic coil 134 is brought in an excitation ON state. When the inkjet head 11 changes from the printing state to a non printing state, the electromagnetic coil 134 is brought in an excitation OFF state, and the spring 132 is contracted by a damper chamber pressure change at the time when the damper chamber 12 returns from a state in which the volume is reduced to an original state. Consequently, the magnetic ball 133 is separated from the diameter-expanded part 131b and the through hole 131a is opened. COPYRIGHT: (C)2006,JPO&NCIPI |
