FLUID PUMPING AND DROPLET DEPOSITION APPARATUS

Title:

FLUID PUMPING AND DROPLET DEPOSITION APPARATUS

Document Type and Number:

WIPO Patent Application WO2003070467

Kind Code:

A3

Abstract:

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.

Inventors:

TEMPLE STEPHEN (GB)
HARVEY ROBERT (GB)
ZMOOD RONALD (AU)
LOWE ROBERT JONATHAN (GB)
DRURY PAUL RAYMOND (GB)

Application Number:

PCT/GB2003/000739

Publication Date:

December 04, 2003

Filing Date:

February 20, 2003

Export Citation:

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Assignee:

XAAR TECHNOLOGY LTD (GB)
TEMPLE STEPHEN (GB)
HARVEY ROBERT (GB)
ZMOOD RONALD (AU)
LOWE ROBERT JONATHAN (GB)
DRURY PAUL RAYMOND (GB)

International Classes:

B41J2/055; B41J2/14; B41J2/045; B41J2/16; F04B43/04; (IPC1-7): B41J2/14; B41J2/16

Foreign References:

US5225854A	1993-07-06
US6056389A	2000-05-02
EP0748691A2	1996-12-18
US5170177A	1992-12-08
EP0931654A1	1999-07-28
US4057807A	1977-11-08

Other References:

PATENT ABSTRACTS OF JAPAN vol. 004, no. 102 (M - 022) 22 July 1980 (1980-07-22)
PATENT ABSTRACTS OF JAPAN vol. 011, no. 014 (M - 553) 14 January 1987 (1987-01-14)

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