US 7,246,889 B2 · Inkjet printing head

Abstract

An inkjet printing head including: a common ink chamber having an outlet; and an individual ink flow path having a pressure chamber and leads ink from the outlet of the common ink chamber to a nozzle through the pressure chamber, wherein the common ink chamber and the individual ink flow path are formed of a plurality of thin plate members having holes formed thereon, the thin plate members being laminated and fixed onto one another by metal-metal junction, and wherein sectional area of the common ink chamber along a planar direction of the thin plate members is configured to be smaller at an end portion where the outlet is provided than at a central portion in a direction of thickness of the plurality of thin plate members.

Claims15

Dependent claims

An inkjet printing head comprising:

a common ink chamber having an outlet;
and
an individual ink flow path having a pressure chamber and leads ink from the outlet of the common ink chamber to a nozzle through the pressure chamber,
wherein the common ink chamber and the individual ink flow path are formed of a plurality of metal thin plate members having holes formed thereon, the thin plate members being laminated and fixed onto one another by metal-metal junction, and
wherein sectional area of the common ink chamber along a planar direction of the thin plate members is configured to be smaller at an end portion where the outlet is provided than at a central portion in a direction of thickness of the plurality of thin plate members.

2 more elements

An inkjet printing head comprising:

a common ink chamber having an outlet;
and
an individual ink flow path having a pressure chamber and leads ink from the outlet of the common ink chamber to a nozzle through the pressure chamber,
wherein the common ink chamber and the individual ink flow path are formed of a plurality of thin plate members having holes formed thereon, the thin plate members being laminated and fixed onto one another by metal-metal junction, and
wherein a thickest one of a part of the plurality of thin plate members that are laminated above the common ink chamber at a side to the pressure chamber, is positioned at a side to the common ink chamber in the part of the plurality of thin plate members with respect to a central position of the part of the plurality of thin plate members.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/874,332Filed 24 Jun 2004

Priority

JP 2003-18797630 Jun 2003

Published

US 2004/0263583 A130 Dec 2004

Granted

24 Jul 2007

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 codes

B41J 2/14209
Structure of print heads with piezoelectric elements: of finger type, chamber walls consisting integrally of piezoelectric material
B41J 2002/14217
Of finger type, chamber walls consisting integrally of piezoelectric material: multi layer finger type piezoelectric element
B41J 2002/14225
Of finger type, chamber walls consisting integrally of piezoelectric material: finger type piezoelectric element on only one side of the chamber
B41J 2002/14306
Structure of print heads with piezoelectric elements: flow passage between manifold and chamber

Inkjet printing head

Life of this patent

Inkjet printing head

Life of this patent

Abstract

Claims15