Title:
LIQUID DROPLET EJECTION DEVICE AND LIQUID FEEDING METHOD
Document Type and Number:
WIPO Patent Application WO/2022/107204
Kind Code:
A1
Abstract:
Provided are a liquid droplet ejection device and a liquid feeding method capable of effectively suppressing occurrence of a problem due to air bubbles while suppressing an increase in pressure loss. This liquid droplet ejection device is provided with: a liquid droplet ejection head having a nozzle that ejects a liquid, a supply flow path through which the liquid to be supplied to the nozzle passes, a discharge flow path that communicates with the supply flow path and through which a liquid to be discharged without being ejected from the nozzle passes, a filter that is provided in the supply flow path and through which the liquid that is to pass through the supply flow path passes, and a communication flow path that branches off from an upstream side of the filter in a liquid feeding direction of the liquid in the supply flow path and communicates with the discharge flow path; and a liquid feeding unit that performs a liquid feeding operation to cause the liquids of the supply flow path and the discharge flow path to flow in the liquid feeding direction. The mesh diameter of the filter is smaller than the opening diameter of the nozzle. The liquid feeding unit performs the liquid feeding operation in a mode in which pressure loss in the filter becomes smaller than a first meniscus break pressure at which meniscus of the liquid breaks in the filter.
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Inventors:
HAMANO HIKARU (JP)
Application Number:
PCT/JP2020/042799
Publication Date:
May 27, 2022
Filing Date:
November 17, 2020
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
B41J2/19; B41J2/14; B41J2/18
Domestic Patent References:
| WO2016043267A1 | 2016-03-24 |
Foreign References:
| JP2007168421A | 2007-07-05 | |||
| JP2017081066A | 2017-05-18 | |||
| JP2014024320A | 2014-02-06 | |||
| JP2005125670A | 2005-05-19 | |||
| JP2018083316A | 2018-05-31 | |||
| US20130147879A1 | 2013-06-13 |
Attorney, Agent or Firm:
KOYO INTERNATIONAL PATENT FIRM (JP)
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