Title:
マイクロ機械装置の熱屈曲アクチュエータ
Document Type and Number:
Japanese Patent JP4585727
Kind Code:
B2
Abstract:
A micro electro-mechanical device embodied within an ink ejection nozzle having an actuating arm that is caused to move an ink displacing paddle when heat inducing electric current is passed through the actuating arm is disclosed. The paddle is located in an ink chamber and the actuating arm passes through an actuator aperture in the chamber. The actuating arm has an inner arm and an outer arm and electrical current is supplied to the inner arm to cause bending of the actuating arm so as to move the paddle to eject a droplet of ink from the ink chamber. To prevent spurious bending modes and to force the actuating arm to undergo a desired bending mode so that the paddle moves appropriately to eject the ink droplet, the actuating arm includes connecting rods which connect side edges of the inner and outer arms and torsion bars which connect the connecting rods. The torsion bars and connecting rods reduce the likelihood of unwanted bending modes taking place which may effect the expulsion of an ink droplet from the chamber.
Inventors:
Silverbrook, Kia
Application Number:
JP2001507736A
Publication Date:
November 24, 2010
Filing Date:
May 24, 2000
Export Citation:
Assignee:
Silverbrook Research Pty Limited
International Classes:
B41J2/015; B81B3/00; B41J2/14; F03G7/06
Domestic Patent References:
| JP4001051A | ||||
| JP9001795A | ||||
| JP4506392A | ||||
| JP7314673A | ||||
| JP2002538981A | ||||
| JP2002537132A | ||||
| JP2002542948A |
Foreign References:
| WO1999003681A1 |
Attorney, Agent or Firm:
Ken Hashizume