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:
Sep. 02, 2014
Filed:
Apr. 04, 2011
Seiichi Fujita, Shiojiri, JP;
Yutaka Yamazaki, Chino, JP;
Seiichi Fujita, Shiojiri, JP;
Yutaka Yamazaki, Chino, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A method for producing a liquid-ejecting head including a passage-forming substrate and a protective substrate. The passage-forming substrate has pressure-generating chambers communicating with nozzle orifices, piezoelectric devices that change the inner pressures of the pressure-generating chambers, and liquid supply channels for supplying the pressure-generating chambers. The protective substrate has a piezoelectric-device accommodating portion and a through-hole, through which wirings to lead electrodes extended from the piezoelectric devices pass thorough. The method includes forming the piezoelectric-device accommodating portion and a portion of the through-hole in the protective substrate while leaving a lid, a portion of the protective substrate, closing off an opening of the through-hole, bonding the protective substrate to the passage-forming substrate, forming the pressure-generating chambers and the liquid supply channels in the passage-forming substrate, forming a protective film on surfaces of the passage-forming substrate and the protective substrate, and removing the lid to complete the formation of the through-hole.