Pulsed droplet deposition apparatus using unpoled crystalline sh

Details Pulsed droplet deposition apparatus using unpoled crystalline sh Pulsed droplet deposition apparatus using unpoled crystalline sh

1989-09-01

1991-07-02

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

310333, 310360, 310362, B41J 2045

Patent

active

050289365

ABSTRACT:
A pulsed droplet ink jet printer has at least one channel communicating with a nozzle. The side wall of the channel is formed as a shear mode piezo-electric actuator comprising an unpoled crystalline material. Electrodes applied to the actuator enable an electric field to be applied such that the actuator moves in transversely of the field to change the liquid pressure in the channel and thereby eject a droplet through the nozzle. The actuator can be made in two parts so as to deform, in cross section, to a chevron formation.

REFERENCES:
patent: 2309467 (1943-01-01), Mason
patent: 3219850 (1965-11-01), Langevin
patent: 3773898 (1973-11-01), Aizu
patent: 3840826 (1974-10-01), Toda
patent: 4272200 (1981-06-01), Hehl
patent: 4314481 (1982-02-01), Wolfer
patent: 4536097 (1985-08-01), Nilsson
patent: 4584590 (1986-04-01), Fischbeck et al.
patent: 4879568 (1989-11-01), Bartky
Shih et al., Application of GMO as an active Element to Printing Mechanism, IBM TDB, V.sub.22, N6, Nov. 1979, pp. 2527-2528.

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