Invention Grant
US09481166B2 Piezoelectric element drive circuit and state detection method, and image recording device
有权
压电元件驱动电路和状态检测方法,以及图像记录装置
- Patent Title: Piezoelectric element drive circuit and state detection method, and image recording device
- Patent Title (中): 压电元件驱动电路和状态检测方法,以及图像记录装置
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Application No.: US15067978Application Date: 2016-03-11
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Publication No.: US09481166B2Publication Date: 2016-11-01
- Inventor: Atsuko Hirakawa
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Studebaker & Brackett PC
- Priority: JP2013-191950 20130917
- Main IPC: B41J2/045
- IPC: B41J2/045 ; H01L41/04 ; H01L41/09

Abstract:
Provided are a piezoelectric element drive circuit and state detection method, and an image recording device which realize state detection of a piezoelectric element inexpensively and with a suppressed circuit scale in a drive circuit for rapidly driving a large-capacity load that uses negative voltage drive. An output potential (VOUT) of a boost unit (BST) is detected in a state in which VS_AMP supplied to an amplification unit (AMP) is set to a voltage lower than a maximum rating of a transistor (FET1) by SW1, supply of VS_FET to the boost unit (BST) is blocked by SW2, and an individual electrode (28) of a piezoactuator (30) is pulled down to VS_FET via a resistor (R6).
Public/Granted literature
- US20160193828A1 PIEZOELECTRIC ELEMENT DRIVE CIRCUIT AND STATE DETECTION METHOD, AND IMAGE RECORDING DEVICE Public/Granted day:2016-07-07
Information query
IPC分类: