US 8,474,138 B2Granted

Method of manufacturing the ink-jet head

AssigneeBrother Kogyo Kabushiki Kaisha

InventorsHidetoshi Watanabe, Atsushi Hirota

Life of this patent

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Abstract

A method of manufacturing an ink-jet head includes preparing a sheet-like piezoelectric material comprising an internal electrode and forming a plurality of individual electrodes at equal intervals in a drive area and an area around the drive area on a surface of the sheet-like piezoelectric material. The method also includes forming a piezoelectric sheet which comprises the plurality of individual electrodes and the internal electrode opposite to the respective individual electrodes by firing the piezoelectric material in which the individual electrodes are formed and forming a plurality of individual electrodes for drive voltage application on a board which drives the piezoelectric sheet. The method further includes electrically connecting the respective individual electrodes in the drive area of the piezoelectric sheet to the respective individual electrodes formed on the board.

Claims12

Dependent claims

A method of manufacturing an ink-jet head, comprising:

preparing a piezoelectric material comprising an internal electrode in the form of a sheet;
forming a plurality of individual electrodes at equal intervals in a drive area and an area outside of the drive area on a surface of the piezoelectric material;
forming a piezoelectric sheet which comprises the plurality of individual electrodes and the internal electrode opposite to the respective individual electrodes by firing the piezoelectric material in which the individual electrodes are formed;
forming a plurality of individual electrodes for drive voltage application on a board which drives the piezoelectric sheet;
and
electrically connecting the respective individual electrodes in the drive area of the piezoelectric sheet to the respective individual electrodes formed on the board, wherein
the plural individual electrodes in the area outside of the drive area of the piezoelectric material remain unconnected to any of the individual electrodes for drive voltage application until the method of manufacturing the ink-jet head is completed.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/071,877Filed 27 Feb 2008 · division
Priority: JP 2003-18819430 Jun 2003
Published: US 2008/0303865 A111 Dec 2008
Granted: 2 Jul 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 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

Family

Application10/874,265Parent of this division · filed 24 Jun 2004
US 7,360,874 B2Parent of this division · filed 22 Apr 2008
US 2008/0303865 A1Pre-grant publication · published 11 Dec 2008
US 2005/0041074 A1Published application
US 8,474,138 B2This patent

From the US filing history. Foreign family members aren’t listed.