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:
Feb. 21, 2017
Filed:
Feb. 03, 2016
Seiko Epson Corporation, Tokyo, JP;
Toshiaki Hamaguchi, Fujimi-machi, JP;
Eiju Hirai, Minowa-machi, JP;
Yoichi Naganuma, Matsumoto, JP;
Motoki Takabe, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Provided is a head including a channel formation substrate that is provided with a pressure generating chamber which communicates with a nozzle for ejecting a liquid, a piezo element, a driving circuit board that is bonded to the one surface side of the channel formation substrate, and a driving circuit for driving the piezo element. The piezo element and the driving circuit are electrically connected to each other via a bump which is provided on any one of the channel formation substrate and the driving circuit board. A holding portion that holds the piezo element is provided between the driving circuit board and the channel formation substrate. The holding portion is opened to an atmosphere through an atmosphere open passage which is provided to penetrate the driving circuit board in a direction in which the driving circuit board and the channel formation substrate are stacked.