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Title:
LIQUID AGENT APPLICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/064769
Kind Code:
A1
Abstract:
[Problem] To provide a liquid agent application system capable of stabilizing liquid agent discharge. [Solution] A liquid agent application system 100 is provided with a head 16, a sound collection unit 21, and a bubble detection unit 24. The head 16 has a liquid agent retention unit 11, a diaphragm 12 for changing the volume inside the liquid retention unit 11, and a piezoelectric element 13 for pressing and vibrating the diaphragm 12. The sound collection unit 21 collects drive sound for the head 16. The bubble detection unit 24 detects whether bubbles are mixed in within the liquid agent retention unit 11 on the basis of the drive sound for the head 16.

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Inventors:
LI PENGTUAN (JP)
NAKATANI MASAJI (JP)
MAEDA KENJI (JP)
Application Number:
PCT/JP2018/024631
Publication Date:
April 04, 2019
Filing Date:
June 28, 2018
Export Citation:
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Assignee:
NIDEC CORP (JP)
International Classes:
B05C11/00; B05C5/00; B05C11/10; G01N29/036; G01N29/14
Foreign References:
JP2015054015A2015-03-23
JP2017149077A2017-08-31
JPH10253444A1998-09-25
JP2015155149A2015-08-27
JP2012137468A2012-07-19
JP2015120109A2015-07-02
JP2006051700A2006-02-23
US20170078792A12017-03-16
Other References:
SATO, TSUYOSHI: "Bubble Detection Technology for Piezo-Driven Inkjet Heads to Improve Reliability of Inkjet Process", TOSHIBA REVIEW, vol. 66, no. 7, 1 July 2011 (2011-07-01), pages 50 - 53
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