| 摘要 |
PROBLEM TO BE SOLVED: To obtain a liquid droplet ejection head which can perform ejection control such that ejection is varied more effectively. SOLUTION: The liquid droplet ejection head comprises a nozzle 31 for ejecting a liquid in the form of a droplet, a plurality of ejection chambers (upstream side ejection chamber 21A, downstream side ejection chamber 21B) equipped, respectively, with oscillating boards (upstream side oscillating board 22A, downstream side oscillating board 22B) and provided in series on a liquid channel communicating with the nozzle 31, and individual electrodes 12A and 12B opposing the oscillating boards of respective ejection chambers and displacing respective oscillating boards by generating electrostatic force between them wherein the volume to be removed by displacement of each oscillating board is differentiated. COPYRIGHT: (C)2009,JPO&INPIT |
