Invention Grant
US08425013B2 Piezoelectric actuator, liquid ejection head, and image forming apparatus
有权
压电致动器，液体喷射头和图像形成装置
- Patent Title: Piezoelectric actuator, liquid ejection head, and image forming apparatus
- Patent Title (中): 压电致动器，液体喷射头和图像形成装置
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Application No.: US13151506Application Date: 2011-06-02
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Publication No.: US08425013B2Publication Date: 2013-04-23
- Inventor: Keisuke Hayashi
- Applicant: Keisuke Hayashi
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Cooper & Dunham LLP
- Priority: JP2010-131532 20100608
- Main IPC: B41J2/045
- IPC: B41J2/045
Abstract:
A piezoelectric actuator includes a piezoelectric member having piezoelectric pillars and grooves alternately arrayed. Each of the grooves has a first width at a bottom side of the piezoelectric pillars and a second width at an upper side of the piezoelectric pillars in a direction in which the piezoelectric pillars are arrayed. The first width is greater than the second width.
Public/Granted literature
- US20110298872A1 PIEZOELECTRIC ACTUATOR, LIQUID EJECTION HEAD, AND IMAGE FORMING APPARATUS Public/Granted day:2011-12-08
Information query
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