Liquid ejection device
A liquid ejection device 1 includes an accommodation section 11 configured to accommodate ink 12 ; a head 17 configured to eject the ink 12 ; and a flow path 20 that connects the accommodation section 11 and the head 17 and inside which an elastic body 201 is movably enclosed, wherein the ink 12 is supplied from the accommodation section 11 to the head 17 via the flow path 20 and the elastic body 201 expands and contracts in accordance with pressure of the ink 12 inside the flow path 20.
1 . A liquid ejection device comprising:
an accommodation section configured to accommodate liquid;
a head configured to eject the liquid; and
a flow path that connects the accommodation section and the head and inside which an elastic body is movably enclosed, wherein
the liquid is supplied from the accommodation section to the head via the flow path,
the elastic body expands and contracts in accordance with pressure of the liquid inside the flow path, and
with respect to a plane whose normal line is along a flow direction of the liquid in the flow path, an external shape of a cross-sectional section of the elastic body along the plane is different from an internal shape of a cross-sectional section of the flow path along the plane.
2 . The liquid ejection device according to claim 1 , wherein
the elastic body includes a first elastic body and a second elastic body.
3 . The liquid ejection device according to claim 2 , wherein
a first fluid is enclosed inside the first elastic body,
a second fluid is enclosed inside the second elastic body, and
a compression ratio of the first fluid is different from a compression ratio of the second fluid.
4 . The liquid ejection device according to claim 2 , wherein
a volume of the first elastic body is larger than a volume of the second elastic body.
5 . A liquid ejection device comprising:
an accommodation section configured to accommodate liquid;
a head configured to eject the liquid; and
a flow path that connects the accommodation section and the head and inside which an elastic body is movably enclosed, wherein
the liquid is supplied from the accommodation section to the head via the flow path,
the elastic body expands and contracts in accordance with pressure of the liquid inside the flow path, the elastic body includes a first elastic body and a second elastic body,
a first fluid is enclosed inside the first elastic body,
a second fluid is enclosed inside the second elastic body, and
a compression ratio of the first fluid is different from a compression ratio of the second fluid.
6 . The liquid ejection device according to claim 5 , wherein
a volume of the first elastic body is larger than a volume of the second elastic body.
7 . The liquid ejection device according to claim 5 , wherein
with respect to a plane whose normal line is along a flow direction of the liquid in the flow path, an external shape of a cross-sectional section of the elastic body along the plane is different from an internal shape of a cross-sectional section of the flow path along the plane.
8 . A liquid ejection device comprising:
an accommodation section configured to accommodate liquid;
a head configured to eject the liquid; and
a flow path that connects the accommodation section and the head and inside which an elastic body is movably enclosed, wherein
the liquid is supplied from the accommodation section to the head via the flow path,
the elastic body expands and contracts in accordance with pressure of the liquid inside the flow path, the elastic body includes a first elastic body and a second elastic body, and a volume of the first elastic body is larger than a volume of the second elastic body.
9 . The liquid ejection device according to claim 8 , wherein
a first fluid is enclosed inside the first elastic body,
a second fluid is enclosed inside the second elastic body, and
a compression ratio of the first fluid is different from a compression ratio of the second fluid.
10 . The liquid ejection device according to claim 8 , wherein
with respect to a plane whose normal line is along a flow direction of the liquid in the flow path, an external shape of a cross-sectional section of the elastic body along the plane is different from an internal shape of a cross-sectional section of the flow path along the plane.