Title:
LIQUID DISCHARGE DEVICE, HEAD UNIT, AND LIQUID DISCHARGE DEVICE CONTROL METHOD
Document Type and Number:
Japanese Patent JP2015164779
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a liquid discharge device which can stabilize the discharge of droplets by enhancing the waveform accuracy of a driving signal for driving a piezoelectric element to discharge the droplets, even if the driving signal has a high frequency.SOLUTION: A drive circuit including transistors M3 and M4 and a low-pass filter generates a drive signal for driving a piezoelectric element, by a D-class amplification. The transistor M3 (M4) has a drain pad 72D on one face of a die 70 and a gate pad 72G and a source pad 72S on the other face. A grip 74 having conductivity is electrically connected on one face of the die 70 with the drain pad 72D, and a portion of the grip 74 is connected with a terminal 93 of a printed circuit board 90. The gate pad 72G and the source pad 72D are respectively connected with a terminal 91 and a terminal 92.
More Like This:
Inventors:
ABE AKIRA
SUGITA HIROSHI
SUGITA HIROSHI
Application Number:
JP2014040368A
Publication Date:
September 17, 2015
Filing Date:
March 03, 2014
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
B41J2/045; B41J2/055
Domestic Patent References:
| JP2005329710A | 2005-12-02 | |||
| JP2005354105A | 2005-12-22 | |||
| JP2004040008A | 2004-02-05 | |||
| JP2007190708A | 2007-08-02 | |||
| JP2012230937A | 2012-11-22 | |||
| JP2005183559A | 2005-07-07 | |||
| JP2009190287A | 2009-08-27 | |||
| JPH09307253A | 1997-11-28 | |||
| JP2009153272A | 2009-07-09 | |||
| JP2010114711A | 2010-05-20 |
Foreign References:
| US20070090523A1 | 2007-04-26 | |||
| US20100193921A1 | 2010-08-05 |
Attorney, Agent or Firm:
Akira Obayashi
Taro Takahashi
Taro Takahashi