Invention Grant
US07878631B2 Liquid jet head, a liquid jet apparatus and a piezoelectric element
有权
液体喷射头，液体喷射装置和压电元件
- Patent Title: Liquid jet head, a liquid jet apparatus and a piezoelectric element
- Patent Title (中): 液体喷射头，液体喷射装置和压电元件
-
Application No.: US12408492Application Date: 2009-03-20
-
Publication No.: US07878631B2Publication Date: 2011-02-01
- Inventor: Akira Kuriki , Yuka Yonekura
- Applicant: Akira Kuriki , Yuka Yonekura
- Applicant Address: JP Shinjuku-ku, Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Shinjuku-ku, Tokyo
- Agency: Townsend and Townsend and Crew, LLP
- Priority: JP2008-074720 20080321
- Main IPC: B41J2/045
- IPC: B41J2/045
Abstract:
A piezoelectric layer held between a first electrode on a substrate side and a second electrode formed on a surface of the piezoelectric layer facing away from the first electrode is formed of a ferroelectric material with a perovskite crystal structure, and the ratio of the surface roughness of the piezoelectric layer to the surface roughness of the first electrode falls within the range of 0.58 to 1.60.
Public/Granted literature
- US20090237465A1 LIQUID JET HEAD, A LIQUID JET APPARATUS AND A PIEZOELECTRIC ELEMENT Public/Granted day:2009-09-24
Information query
IPC分类:
