Ink-jet head having ink chamber and non-ink chamber divided by s

Details Ink-jet head having ink chamber and non-ink chamber divided by s Ink-jet head having ink chamber and non-ink chamber divided by s

Filed on

1996-09-06

Date issued

1999-11-23

Examiner

Barlow, Jr., John E.

Patent Class

Incremental printing of symbolic information

SubClass

Ink jet

SubSubClass

Ejector mechanism

Other Related Categories

347 54, B41J 2045

Type

Patent

Status

active

Patent number

059887990

Description

ABSTRACT:
An ink-jet head is provided with a container having an ink-discharge opening in its wall section; a structural element that has peripheral edges at least both ends in one direction of which are secured to the wall faces inside the container, that divides the inside of the container in a fluid-separated state, and that is allowed to be distorted; and a voltage-applying unit for applying a voltage to the structural element. The structural element is constituted of a piezoelectric material, and the shape of the structural element is changed in response to the voltage applied by the voltage-applying unit so that ink is allowed to discharge from the ink-discharge opening. Therefore, the above-mentioned arrangement makes it possible to provide a greater ink-discharging force and ink-discharging speed, while maintaining a small size of the head. Moreover, it is possible to provide an ink-jet head having a good discharging efficiency with long service life.

REFERENCES:
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patent: 4383264 (1983-05-01), Lewis
patent: 4533082 (1985-08-01), Maehara et al.
patent: 4539575 (1985-09-01), Nilsson
patent: 4584590 (1986-04-01), Fischbeck et al.
patent: 4641153 (1987-02-01), Cruz-Uribe
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patent: 4998120 (1991-03-01), Koto et al.
patent: 5255016 (1993-10-01), Usui et al.
patent: 5534900 (1996-07-01), Ohno et al.
patent: 5666141 (1997-09-01), Matoba et al.
patent: 5812163 (1998-09-01), Wong

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