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:
Jun. 30, 2009
Filed:
Aug. 11, 2006
Tomoaki Takahashi, Nagano-ken, JP;
Yoshinao Miyata, Nagano-ken, JP;
Kazutoshi Goto, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid-jet head, comprising: a nozzle plate having nozzle orifices bored therein; a passage-forming substrate provided with recesses including pressure generating chambers communicating with the nozzle orifices; piezoelectric elements provided on a surface of the passage-forming substrate via a vibration plate, each piezoelectric element including a lower electrode, a piezoelectric layer, and an upper electrode; and a joining plate joined to the surface of the passage-forming substrate, where the piezoelectric elements are formed, via an adhesive layer comprising an adhesive agent, wherein a plurality of contact portions and a joining portion are provided in a region where the joining plate is joined to the passage-forming substrate, the plurality of contact portions are protruded at a predetermined height on the vibration plate, and are substantially contacted by the joining plate, and the joining portion has the adhesive layer of a thickness equal to or larger than the height of the contact portions.