Title:
NOZZLE PLATE, LIQUID DROPLET EJECTION HEAD, AND LIQUID DROPLET EJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/063031
Kind Code:
A1
Abstract:
A nozzle plate 110 is provided with a plurality of nozzle flow paths 111. The nozzle flow paths 111 are provided with: a nozzle taper part 1112 having a flow path area gradually increasing from a first surface Ba toward a second surface Bb opposed to the first surface Ba; and a straight communication part 1113 provided to be continuous with the second surface Bb and having a pair of opposed surfaces 1113a substantially parallel to each other. The straight communication part 1113 has a longer length in a first direction along the pair of opposed surfaces 1113a than a length in a second direction orthogonal to the first direction in the second surface Bb. The nozzle taper part 1112 is provided with a pair of step surfaces 1112b along the second direction, the step surfaces 1112b forming a step with respect to a taper surface 1112a with a nozzle opening part N held therebetween. The step surfaces 1112b are inclined surfaces having a smaller angle formed with respect to a hang-down surface or an axis parallel to a nozzle central axis than the taper surface 1112a.
Inventors:
YOKOYAMA MITSURU (JP)
SAMESHIMA KOUICHI (JP)
SAMESHIMA KOUICHI (JP)
Application Number:
PCT/JP2023/033808
Publication Date:
March 28, 2024
Filing Date:
September 15, 2023
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
B41J2/14
Domestic Patent References:
| WO2023008375A1 | 2023-02-02 |
Foreign References:
| JPH09207341A | 1997-08-12 | |||
| JP2008307838A | 2008-12-25 | |||
| JP2007175992A | 2007-07-12 | |||
| JP2014113822A | 2014-06-26 | |||
| JP2016172326A | 2016-09-29 | |||
| JP2017074723A | 2017-04-20 | |||
| US20130135392A1 | 2013-05-30 |
Attorney, Agent or Firm:
KOYO INTERNATIONAL PATENT FIRM (JP)
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