초록 ▼

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-separa

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.

대표청구항 ▼

[ What is claimed is:] [15.] An ink-jet head-comprising:box-shaped body that forms a plurality of first chambers containing ink and a plurality of second chambers without containing ink, each of the first chambers having an ink-discharge opening and an ink-supplying inlet and each of the second cham

[ What is claimed is:] [15.] An ink-jet head-comprising:box-shaped body that forms a plurality of first chambers containing ink and a plurality of second chambers without containing ink, each of the first chambers having an ink-discharge opening and an ink-supplying inlet and each of the second chambers being installed so as to correspond to each of the first chambers;a plurality of structural elements each of which separates each of the first chambers and second chambers, respectively, each of the structural elements being oriented in an initial shape and displaceable between a static plane non-deformed state and a buckling deformation deformed state, each of the structural elements being further provided with two end portions that are secured to the box-shaped body; anda plurality of voltage-applying units coupled with the structural elements, respectively, the voltage-applying units applying voltages to the structural elements,each of the structural elements being formed of a piezoelectric material and being expandable and contractable along the static plane and subjected to buckling deformation in response to the voltage applied by the voltage-applying unit so that ink is discharged from each ink-discharge opening, the two end portions of each of the structural elements being secured to the box-shaped body such that each structural element is subjected to buckling deformation when a compressing force within the static plane of the structural element exceeds a buckling load.