In fluid pumping apparatus suitable for use in drop on demand ink jet printing, a resiliently deformable chamber wall is acted upon to create acoustic waves, which in turn cause a fluid flow in a chamber outlet. The resiliently deformable chamber wall preferably comprises both rigid and flexible portions. In an alternative arrangement a channel wall is provided with a region moveable in an actuation direction. An electromagnetic actuator operates under the principle of flux modulation. The invention is preferably of planar construction, manufactured using MEMS techniques.
申请公布号
WO03070467(A3)
申请公布日期
2003.12.04
申请号
WO2003GB00739
申请日期
2003.02.20
申请人
XAAR TECHNOLOGY LIMITED;TEMPLE, STEPHEN;HARVEY, ROBERT;ZMOOD, RONALD;LOWE, ROBERT, JONATHAN;DRURY, PAUL, RAYMOND
发明人
TEMPLE, STEPHEN;HARVEY, ROBERT;ZMOOD, RONALD;LOWE, ROBERT, JONATHAN;DRURY, PAUL, RAYMOND