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US 11,446,928 B2Granted
Liquid discharging head and method of manufacturing liquid discharging head
AssigneeSeiko Epson Corporation
InventorsMotoki Takabe, Eiju Hirai, Hiroaki Okui
Life of this patent
Estimating the term…
Abstract
when one position where a distance in the second direction to the partition wall located at a nearest position in the second direction is long is assumed as a first position, and the other position where the distance is short is assumed as a second position, both the piezoelectric body and the vibration plate are provided at the first position and the second position, and a thickness of the vibration plate at the second position is smaller than a thickness of the vibration plate at the first position.
Claims18
A liquid discharging head comprising:
- a piezoelectric body;
- a vibration plate provided on one side in a first direction with respect to the piezoelectric body;
- and
- a pressure chamber substrate provided on the one side with respect to the vibration plate, the pressure chamber substrate including a plurality of partition walls that partition a pressure chamber for applying a pressure to a liquid, and
- a nozzle plate in which a plurality of nozzles are arranged in a second direction intersecting with the first direction,
- the piezoelectric body, the pressure chamber substrate, the vibration plate, and the nozzle plate being provided side by side in the first direction, wherein
- in two positions in the second direction in the pressure chamber, when one position where a distance in the second direction to the partition wall located at a nearest position in the second direction is long is assumed as a first position, and the other position where the distance is short is assumed as a second position, both the piezoelectric body and the vibration plate are provided at the first position and the second position,
- a thickness of the vibration plate at the second position is smaller than a thickness of the vibration plate at the first position, and
- when a position in the vibration plate overlapping the partition wall in the second direction is assumed as a third position, a thickness of the vibration plate at the third position is smaller than the thickness of the vibration plate at the first position.
6 more elements
Dependencies are inferred from the claim text.