Shearing made ink ejecting apparatus with reliable ejection over

Details Shearing made ink ejecting apparatus with reliable ejection over Shearing made ink ejecting apparatus with reliable ejection over

1996-04-26

1999-06-29

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 69, 310346, 310358, B41J 2045, H01L 4104

Patent

active

059175222

ABSTRACT:
A material used for the actuator walls in an ink ejecting device, that are the walls of ink flow paths, are those in which the rate of change of the electromechanical coupling coefficient, with changes in temperature, is not greater than 3000 PPm/.degree. C. at temperatures of 20.degree. C. or less. Consequently, at a driving voltage that produces an ink drop ejection velocity of 5 m/s at 25.degree. C., the ink drop ejection velocity when driven at 10.degree. C. is at least 3 m/s, so that it is possible to obtain good printing quality.

REFERENCES:
patent: 3946398 (1976-03-01), Kyser et al.
patent: 4311980 (1982-01-01), Prudenziati
patent: 4723129 (1988-02-01), Endo et al.
patent: 4879568 (1989-11-01), Bartky et al.
Piezoelectric Products, Sumitomo Metal Industries, Ltd., No. 73910, 1997.
Piezoelectric Ceramics, Tokin, vol. 2, Cat. No. VR-07JE, Jun. 20, 1997.

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