Invention Grant
- Patent Title: Liquid ejecting head and method for manufacturing the same
- Patent Title (中): 液体喷头及其制造方法
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Application No.: US12057672Application Date: 2008-03-28
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Publication No.: US07712878B2Publication Date: 2010-05-11
- Inventor: Motoki Takabe , Koji Sumi
- Applicant: Motoki Takabe , Koji Sumi
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Workman Nydegger
- Priority: JP2007-089867 20070329
- Main IPC: B41J2/045
- IPC: B41J2/045

Abstract:
A liquid ejecting head includes a flow channel substrate having a pressure generating chamber communicating with a nozzle aperture through which liquid is ejected, and a piezoelectric element disposed on one surface of the flow channel substrate. The piezoelectric element includes a common electrode, a piezoelectric layer, and an individual electrode. The piezoelectric layer is made of lead zirconate titanate having a rhombohedral or monoclinic crystal structure preferentially oriented in the (100) plane. The saturated polarization Pm and the residual polarization Pr of the piezoelectric layer satisfy the relationship 33%≦2Pr/2Pm≦46%.
Public/Granted literature
- US20080239017A1 LIQUID EJECTING HEAD AND METHOD FOR MANUFACTURING THE SAME Public/Granted day:2008-10-02
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