Liquid ejection head
AssigneeCanon Kabushiki Kaisha
InventorsKazuhiro Ishii, Junichiro Iri, Ryo Sato, Hiroyuki Shimoyama, Kazumasa Matsushita, Kenji Kitabatake
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Abstract
A liquid ejection head includes a plurality of ejection ports, a plurality of pressure chambers each communicating with each of the ejection ports, a piezoelectric actuator constituting part of walls of the pressure chambers, and a common liquid chamber containing liquid to be supplied to the pressure chambers. The pressure chambers and the common liquid chamber are opposed with an opposing wall interposed therebetween. The opposing wall faces the wall of the pressure chambers constituted by the piezoelectric actuator. A reinforcing portion that supports the opposing wall is provided in the common liquid chamber.
Claims9
A liquid ejection head comprising:
- a plurality of ejection ports;
- a plurality of pressure chambers each communicating with each of the ejection ports;
- a piezoelectric actuator constituting part of walls of the pressure chambers;
- a common liquid chamber for containing liquid to be supplied to the plurality of pressure chambers;
- an opposing wall interposed between the pressure chambers and the common liquid chamber, the opposing wall having an upper surface functioning as one of the walls of the pressure chambers;
- and
- a reinforcing portion having at least one sidewall interconnecting an upper surface and lower surface of the common liquid chamber that supports a lower surface of the opposing wall,
- wherein the pressure chambers and the common liquid chamber are arranged in an opposing configuration with respect to each other,
- wherein the common liquid chamber is provided in a first manifold plate and a second manifold plate,
- wherein the reinforcing portion includes a first reinforcing portion provided in the first manifold plate and a second reinforcing portion provided in the second manifold plate, and the first reinforcing portion and the second reinforcing portion are in contact with each other.
Dependencies are inferred from the claim text.