CA2414739A1 - Vent in a micro electro-mechanical device - Google Patents

Vent in a micro electro-mechanical device Download PDF

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Publication number
CA2414739A1
CA2414739A1 CA002414739A CA2414739A CA2414739A1 CA 2414739 A1 CA2414739 A1 CA 2414739A1 CA 002414739 A CA002414739 A CA 002414739A CA 2414739 A CA2414739 A CA 2414739A CA 2414739 A1 CA2414739 A1 CA 2414739A1
Authority
CA
Canada
Prior art keywords
chamber
vent
layer
paddle
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002414739A
Other languages
French (fr)
Other versions
CA2414739C (en
Inventor
Kia Silverbrook
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Memjet Technology Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2414739A1 publication Critical patent/CA2414739A1/en
Application granted granted Critical
Publication of CA2414739C publication Critical patent/CA2414739C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14427—Structure of ink jet print heads with thermal bend detached actuators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/19—Ink jet characterised by ink handling for removing air bubbles

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

A micro electro-mechanical device embodied within an ink ejection nozzle (13) having an actuating arm (28) that is caused to move an ink displacing paddle (27) when heat inducing electric current is passed through the actuating arm is disclosed. The paddle is located in an ink chamber (24) and the actuating arm passes through an actuator aperture (54) in the chamber. The actuating arm including the paddle is moved to eject a droplet (D). The chamber includes a plurality of vents (5) for venting to atmosphere air bubbles which may form in the chamber when the device operates to eject droplets of ink.

Claims (6)

1. A micro electro-mechanical device comprising:
a fluid chamber for containing a fluid, an outlet aperture in the chamber for allowing exit of fluid from the chamber, an actuator for dispensing fluid from the chamber through the outlet aperture, and at least one vent in the chamber for venting to the exterior of the chamber air bubbles which form within the chamber.
2. The device of claim 1 wherein the actuator includes a paddle located within the chamber, wherein the chamber includes a peripheral wall, and wherein the or, if more than one, vent is located within the peripheral wall adjacent a peripheral portion of the paddle.
3. The device of claim 2 wherein a plurality of vents is arranged in the peripheral wall, the plurality of vents being disposed about the peripheral wall adjacent to peripheral portion of the paddle.
4. The device of claim 1 wherein the vent is defined by a first layer and a second layer spaced apart from the first layer, a sacrificial layer being deposited between the first and second layers and the sacrificial layer being etched away to form the vent between the first and second layers.
5. The device of claim 4 wherein the first and second layers have a raised section defined by a pair of shoulders, the sacrificial material being deposited on the raised section of the first layer so as to define a vent passage which forms said vent when the sacrificial material is etched away, the second layer being deposited on the sacrificial material and the portion of the second layer deposited on the sacrificial material having a pair of side walls and a roof which, with the first layer, define the vent passage of the vent.
6. The device of claim 5 wherein the shoulders include apertures for preventing wicking of fluid from the shoulders onto a substrate.
CA002414739A 1999-06-30 2000-05-24 Vent in a micro electro-mechanical device Expired - Fee Related CA2414739C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPQ1311A AUPQ131199A0 (en) 1999-06-30 1999-06-30 A method and apparatus (IJ47V17)
AUPQ1311 1999-06-30
PCT/AU2000/000589 WO2001002288A1 (en) 1999-06-30 2000-05-24 Vent in a micro electro-mechanical device

Publications (2)

Publication Number Publication Date
CA2414739A1 true CA2414739A1 (en) 2001-01-11
CA2414739C CA2414739C (en) 2009-11-17

Family

ID=3815500

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002414739A Expired - Fee Related CA2414739C (en) 1999-06-30 2000-05-24 Vent in a micro electro-mechanical device

Country Status (7)

Country Link
EP (1) EP1194370A4 (en)
CN (2) CN1191986C (en)
AU (1) AUPQ131199A0 (en)
CA (1) CA2414739C (en)
HK (1) HK1048294A1 (en)
WO (1) WO2001002288A1 (en)
ZA (1) ZA200200769B (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5677156A (en) * 1979-11-28 1981-06-25 Ricoh Co Ltd Ink jet recorder
US4745414A (en) * 1986-04-09 1988-05-17 Canon Kabushiki Kaisha Recovery device for an ink jet recorder and a recovery method thereof
US4998120A (en) * 1988-04-06 1991-03-05 Seiko Epson Corporation Hot melt ink jet printing apparatus
US5363130A (en) * 1991-08-29 1994-11-08 Hewlett-Packard Company Method of valving and orientation sensitive valve including a liquid for controlling flow of gas into a container
US5649423A (en) * 1994-06-07 1997-07-22 Sandia Corporation Micromechanism linear actuator with capillary force sealing
US5988803A (en) * 1997-12-12 1999-11-23 Lexmark International, Inc. Ink leakage control arrangement for an ink cartridge

Also Published As

Publication number Publication date
EP1194370A4 (en) 2003-01-08
AUPQ131199A0 (en) 1999-07-22
CN100413777C (en) 2008-08-27
CN1666951A (en) 2005-09-14
HK1048294A1 (en) 2003-03-28
CA2414739C (en) 2009-11-17
WO2001002288A1 (en) 2001-01-11
CN1191986C (en) 2005-03-09
CN1374926A (en) 2002-10-16
ZA200200769B (en) 2002-10-30
EP1194370A1 (en) 2002-04-10

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20160524