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US 9,956,778 B2Granted
Liquid ejecting head unit and liquid ejecting apparatus
AssigneeSeiko Epson Corporation
InventorKatsuhiro Okubo
Life of this patent
Estimating the term…
Abstract
A liquid ejecting head unit includes a first flow path member with a first flow path and a second flow path member with a second flow path which is stacked on the first flow path member. A seal member connects the first and second flow paths and has a first seal part and a second seal part. The first flow path member applies a force to the first seal part in a stacking direction of the first and second flow path members. The second flow path member applies a force to the second seal part in a direction from the center of the second flow path to the outside and normal to the stacking direction. A retaining part controls expansion of the seal member in the normal direction with a control part. A drive element ejects liquid supplied through the first and the second flow paths through nozzles.
Claims16
A liquid ejecting head unit comprising:
- a first flow path member having a first flow path;
- a second flow path member having a second flow path, the second flow path member being stacked on the first flow path member;
- a seal member that connects the first flow path to the second flow path, the seal member having a first seal part and a second seal part, the first flow path member applying a force to the first seal part in a stacking direction in which the second flow path member is stacked on the first flow path member, the second flow path member applying a force to the second seal part in a direction from a center of the second flow path to an outside thereof, the direction being perpendicular to the stacking direction;
- a retaining part configured to bar against expansion of the seal member in the perpendicular direction;
- and
- a recording head configured to eject liquid through a nozzle, the liquid supplied through both the first flow path and the second flow path,
- wherein the retaining part is aligned with the second seal part in the stacking direction, and
- wherein the seal member has a projection that protrudes from the center of the second flow path to the outside thereof in the perpendicular direction and that abuts against the retaining part.
5 more elements
A liquid ejecting head unit comprising:
- a first flow path member having a first flow path;
- a second flow path member having a second flow path, the second flow path member being stacked on the first flow path member;
- a seal member that connects the first flow path to the second flow path, the seal member having a first seal part and a second seal part, the first flow path member applying a force to the first seal part in a stacking direction in which the second flow path member is stacked on the first flow path member, the second flow path member applying a force to the second seal part in a direction from a center of the second flow path to an outside thereof, the direction being perpendicular to the stacking direction;
- a retaining part configured to bar against expansion of the seal member in the perpendicular direction;
- and
- a recording head configured to eject liquid through a nozzle, the liquid supplied through both the first flow path and the second flow path,
- wherein the seal member has a flat part disposed outside the second seal part with respect to a center of the first flow path in the perpendicular direction, and wherein the seal member has a projection that protrudes from the center of the second flow path to the outside thereof in the perpendicular direction and that abuts against the retaining part,
- the flat part has a first surface and a second surface, the first surface being at a side of the first flow path member, the second surface being at a side of the second flow path member, and
- the retaining part is disposed so as to face the first surface of the flat part.
6 more elements
A liquid ejecting head unit comprising:
- a first flow path member having a first flow path;
- a second flow path member having a second flow path, the second flow path member being stacked on the first flow path member;
- a seal member that connects the first flow path to the second flow path, the seal member having a first seal part and a second seal part, the first flow path member applying a force to the first seal part in a stacking direction in which the second flow path member is stacked on the first flow path member, the second flow path member applying a force to the second seal part in a direction from a center of the second flow path to an outside thereof, the direction being perpendicular to the stacking direction;
- a retaining part configured to bar against expansion of the seal member in the perpendicular direction;
- and
- a recording head configured to eject liquid through a nozzle, the liquid supplied through both the first flow path and the second flow path,
- wherein the seal member has a projection that protrudes from the center of the second flow path to the outside thereof in the perpendicular direction and that abuts against the retaining part, and
- a corner of the projection which is closer to the first seal part in the stacking direction is chamfered.
5 more elements
Dependencies are inferred from the claim text.