Title:
液体移送装置
Document Type and Number:
Japanese Patent JP3997485
Kind Code:
B2
Abstract:
A liquid delivering device including: (a) a cavity unit defining pressure chambers; and (b) a piezoelectric actuator unit superposed on the cavity unit, and having active portions opposed to the respective pressure chambers and selectively deformable upon application of a drive voltage thereto so as to deliver a liquid from the corresponding pressure chambers to the exterior. The actuator unit includes first and second flexible layers, and a piezoelectric material layer interposed between the first and second flexible layers. A portion of the piezoelectric material layer located in a central region of each active portion is offset from a center of the piezoelectric actuator unit, as viewed in a thickness direction of the actuator unit, in one of a direction toward the cavity unit and a direction away from the cavity unit, while a portion of the piezoelectric material layer located in an outer region of each active portion is offset from the above-described center, as viewed in the thickness direction, in the other of the direction toward the cavity unit and the direction away from the cavity unit.
Inventors:
Hiroto Sugawara
Application Number:
JP2003335165A
Publication Date:
October 24, 2007
Filing Date:
September 26, 2003
Export Citation:
Assignee:
Brother Industries, Ltd.
International Classes:
B41J2/045; B41J2/055; B41J2/135; B41J2/14; B41J2/16; F04B9/00; F04B43/04; H01L41/09; H01L41/18; H01L41/187; H01L41/22; H01L41/29; H01L41/313; H01L41/314; H01L41/316; H01L41/318; H01L41/39; H02N2/00
Domestic Patent References:
| JP9277532A | ||||
| JP5246024A | ||||
| JP6155731A | ||||
| JP11245406A | ||||
| JP2003136715A | ||||
| JP2001096739A | ||||
| JP2003166077A | ||||
| JP2000127391A |
Attorney, Agent or Firm:
Arisa Ushiro