Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element
Patent
1991-09-09
1993-11-30
Fuller, Benjamin R.
Recorders
Performance of multiple functions of steam and gas engines
Pressure responsive element
29 2535, 298901, 310357, 310366, 346140R, B41J 2045, H01L 4108
Patent
active
052669645
ABSTRACT:
In a piezoelectric ink jet printer head having a laminated piezoelectric layer, actuating voltage is applied between only electrodes corresponding to a selected jetting device. A part of the piezoelectric ceramic layers between the electrodes is deformed in accordance with a slip effect, to jet ink from the selected jetting device. Since the polarization direction of the piezoelectric ceramic layers is almost perfectly perpendicular to the direction of an actuating electric field, the actuating voltage can be reduced. Further, piezoelectric ceramic layers can be stacked to obtain the necessary strength of a laminated piezoelectric element without decreasing the displacement amount. Thus, the reliability of the laminated piezoelectric element is enhanced. Moreover, the insulation of the electrodes is not deteriorated by a short circuit, migration of silver or the like. Such properties as durability and moisture resistance are also enhanced. Therefore, the printer head of the invention requires no components for preventing the deterioration of the insulation needed for prior art printer heads. The printer head can be thus made compact and lightweight, reducing the manufacturing cost.
REFERENCES:
patent: 4523121 (1985-06-01), Takahashi et al.
patent: 4584590 (1986-04-01), Fischbeck et al.
patent: 4766671 (1988-08-01), Utsumi et al.
patent: 4825227 (1989-04-01), Fischbeck et al.
patent: 5086308 (1992-02-01), Takahashi et al.
"Multilayer Transducers" Xerox Disclosure Journal, vol. 8 No. 5 Sep./Oct. 1983 p. 419.
Suzuki Masahiko
Takahashi Yoshikazu
Bobb Alrick
Brother Kogyo Kabushiki Kaisha
Fuller Benjamin R.
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