The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 15, 2008
Filed:
May. 20, 2005
Tatsuro Torimoto, Nagano-ken, JP;
Akira Matsuzawa, Nagano-ken, JP;
Mutsuhiko Ota, Nagano-ken, JP;
Tetsushi Takahashi, Nagano-ken, JP;
Tatsuro Torimoto, Nagano-ken, JP;
Akira Matsuzawa, Nagano-ken, JP;
Mutsuhiko Ota, Nagano-ken, JP;
Tetsushi Takahashi, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A method of manufacturing a liquid jet head includes the steps of: forming a piezoelectric element on one plane of a passage-forming substrate with a vibration plate interposed therebetween, and removing the vibration plate in an area where a communicating portion is formed, thus forming a penetrated hole; forming a predetermined metal layer on the one plane of the passage-forming substrate on which the piezoelectric element is formed to seal the penetrated hole with the metal layer, and patterning the metal layer in an area corresponding to the piezoelectric element, thus forming a lead electrode; adhering a reservoir-forming plate, in which a reservoir portion is formed, to the one plane of the passage-forming substrate; wet-etching the passage-forming substrate from the other plane thereof until the vibration plate and the metal layer are exposed, thus forming a pressure generating chamber and the communicating portion; and removing the metal layer by etching to allow the reservoir portion and the communicating portion to communicate with each other.