US 8,556,391 B2 · Liquid jet head, liquid ejection apparatus, and manufacturing method for the liquid jet head

Abstract

A liquid jet apparatus includes a nozzle plate having at least one nozzle for ejecting a liquid onto a recording medium, a cover plate having a liquid supply hole for supplying the liquid and a liquid discharge hole for discharging the liquid, and a piezoelectric plate having at least one elongated groove. The piezoelectric plate, cover plate and nozzle plate are stacked relative one another with the at least one elongated groove communicating with the at least one nozzle of the nozzle plate and with each of the liquid supply hole and the liquid discharge hole of the cover plate so that liquid supplied into the at least one elongated groove through the liquid supply hole circulates through the at least one elongated groove and is discharged from the liquid discharge hole.

Claims20

Dependent claims

A liquid jet head, comprising:

a nozzle plate having a nozzle for ejecting a liquid onto a recording medium;
a piezoelectric plate having a first surface, an elongated groove formed in the first surface, and a second surface connected to the nozzle plate;
and
a cover plate having a liquid supply hole for supplying the liquid into the elongated groove of the piezoelectric plate, and having a liquid discharge hole for discharging the liquid through the elongated groove, the cover plate being disposed on the first surface of the piezoelectric plate;
wherein a cross-section of the elongated groove of the piezoelectric plate in a longitudinal direction and a depth direction of the elongated groove is a convex shape;
wherein the elongated groove is communicated, at a tip of the convex shape, to the nozzle;
and
wherein the elongated groove is communicated, in a bottom portion of the convex shape, to the liquid supply hole and the liquid discharge hole.

5 more elements

A liquid jet apparatus comprising:

a nozzle plate having at least one nozzle for ejecting a liquid onto a recording medium;
a cover plate having a liquid supply hole for supplying the liquid and a liquid discharge hole for discharging the liquid;
and
a piezoelectric plate having at least one elongated groove, the piezoelectric plate, cover plate and nozzle plate being stacked relative one another with the at least one elongated groove communicating with the at least one nozzle of the nozzle plate and with each of the liquid supply hole and the liquid discharge hole of the cover plate so that liquid supplied into the at least one elongated groove through the liquid supply hole circulates through the at least one elongated groove and is discharged from the liquid discharge hole.

1 more element

Dependencies are inferred from the claim text.

Liquid jet head, liquid ejection apparatus, and manufacturing method for the liquid jet head

Life of this patent

Liquid jet head, liquid ejection apparatus, and manufacturing method for the liquid jet head

Life of this patent

Abstract

Claims20