Actuator body structure for a piezoelectric ink ejecting printin

Details Actuator body structure for a piezoelectric ink ejecting printin Actuator body structure for a piezoelectric ink ejecting printin

1995-09-19

1998-10-06

Malley, Daniel P.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 71, B41J 2045

Patent

active

058184830

ABSTRACT:
An ink ejecting print head includes an actuator having a plurality of grooves, and a plurality of partition walls separating the grooves. One conductor layer is provided at the center of each partition wall. Other conductor layers connect to conductive thin films provided in each of the ink channels. A voltage is applied to a driving electrode which is electrically connected to conductive thin film provided in one ink channel. The driving electrodes connected to the conductive thin films in the other ink channels and to the conductor layers in the partition walls are grounded. At this time, an electric field occurs in an area of an ink-channel side of each partition wall defining the ink channel, and each adjacent side of the partition wall is deformed. Therefore, the volume of the ink channel is decreased to produce pressure, so that ink is ejected from a nozzle intercommunicating with the ink channel. At this time, no electric field occurs in an area of the partition wall which is at the opposite side to the ink-channel side, so that the other ink channels adjacent to the ink channel are not affected by the deformation of the ink channel.

REFERENCES:
patent: 4879568 (1989-11-01), Bartky et al.
patent: 5444471 (1995-08-01), Usui et al.
patent: 5446485 (1995-08-01), Usui et al.
patent: 5646661 (1997-07-01), Asai et al.

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