| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a liquid ejection apparatus and an inkjet head drive method that easily prevent the element destruction by the voltage application to a piezoelectric element, while achieving the thin film process of the piezoelectric element. <P>SOLUTION: A gas chamber (60) that encloses a space in surroundings of the piezoelectric element to an inkjet head (16) that has piezoelectric element (58) is provided. In the period (the inkjet head is being energized) when the drive voltage is applied to the piezoelectric element, dry gas below the dew point in surroundings of the inkjet head is supplied from a dry gas supply part (70) to the gas chamber, and in the period when the drive voltage is not applied to the piezoelectric element, feeding of the dry gas is stopped. A supply valve 80 of a dry gas supply flow path (78) is shut when the feeding of the dry gas is stopped, and a recovery valve (84) of a gas recovery channel (82) is shut. <P>COPYRIGHT: (C)2013,JPO&INPIT |
