Title:
PIEZOELECTRIC ACTUATOR FOR INK JET HEAD AND METHOD OF MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/1996/000151
Kind Code:
A1
Abstract:
First piezoelectric material layers (4) and second piezoelectric material layer (5), both of which are in the form of a thin sheet, are alternately laminated to form a laminated piezoelectric element (2). Formed on a flat surface of each of the first piezoelectric material layers (4) is a first internal electrode (4a) which is exposed only to one end surface of a laminated piezoelectric element (2) in a longitudinal direction. Also, formed on a flat surface of each of the second piezoelectric material layers (5) is a second internal electrode (5a) which is exposed only to the other end surface of the laminated piezoelectric element (2) in the longitudinal direction. Accordingly, the first and second internal electrodes (4a, 5a) having different polarities are not exposed to the same end surface of the laminated piezoelectric element (2), so that it is possible to prevent short between the electrodes, which could be caused by adhesion of water ink, moisture and the like.
Inventors:
NAGASHIMA MITSUYOSHI (JP)
Application Number:
PCT/JP1995/001236
Publication Date:
January 04, 1996
Filing Date:
June 21, 1995
Export Citation:
Assignee:
CITIZEN WATCH CO LTD (JP)
NAGASHIMA MITSUYOSHI (JP)
NAGASHIMA MITSUYOSHI (JP)
International Classes:
B41J2/14; B41J2/16; (IPC1-7): B41J2/045
Foreign References:
| JPH03166952A | 1991-07-18 | |||
| JPH0542671A | 1993-02-23 | |||
| JPH05198860A | 1993-08-06 | |||
| JPH039846A | 1991-01-17 | |||
| JPH06188474A | 1994-07-08 |
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