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US 2017/0246877 A1Published application
Ink circulation device and ink ejection device
AssigneeToshiba Tec Kabushiki Kaisha
InventorsHiroyuki Ishikawa, Kazuhiko Ohtsu
Life of this patent
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Abstract
An liquid circulation device comprises a liquid casing, a gas replenishing section and a liquid replenishing section. The liquid casing retains liquid to be supplied to a liquid ejection section for ejecting the liquid and includes a liquid chamber connected with the liquid ejection section in such a manner that the liquid can be circulated therebetween. The ink circulation device increases pressure inside of the liquid casing by replenishing the gas to the liquid casing with the gas replenishing section and replenishing the liquid to the liquid casing with the liquid replenishing section, and meets a relation (ΔP1*(d1)̂2/L1)/(ΔP2*(d2)̂2/L2)>μ1/μ2.
Claims16
A liquid circulation device, comprising:
- a liquid casing configured to retain liquid for delivery to a liquid ejection section for ejecting the liquid and include a liquid chamber connected with the liquid ejection section in such a manner that the liquid can be circulated therebetween;
- a gas replenishing section configured to replenish gas to the liquid casing;
- and
- a liquid replenishing section configured to replenish the liquid to the liquid casing, wherein
- the liquid circulation device increases pressure inside of the liquid casing by replenishing the gas to the liquid casing with the gas replenishing section and replenishing the liquid to the liquid casing with the liquid replenishing section, and meets a relation (ΔP1*(d1)̂2/L1)/(ΔP2*(d2)̂2/L2)>μ1/μ2 in a case of setting a diameter of a flow path between the liquid casing and the gas replenishing section as d1, a length of the flow path between the liquid casing and the gas replenishing section as L1, pressure generated by sending the gas by the gas replenishing section as ΔP1, viscosity of the gas as μ1, a diameter of a flow path between the liquid casing and the liquid replenishing section as d2, a length of the flow path between the liquid casing and the liquid replenishing section as L2, pressure generated by sending the liquid by the liquid replenishing section as ΔP2, and viscosity of the liquid as μ2.
2 more elements
(canceled)
A liquid ejection apparatus comprising:
- a liquid ejection section comprising a nozzle for ejecting liquid;
- and
- a liquid circulation device, wherein
- the liquid circulation device further comprising:
- a liquid casing configured to retain liquid for delivery to a liquid ejection section for ejecting the liquid and to include a liquid chamber connected with the liquid ejection section in such a manner that the liquid can be circulated therebetween;
- a gas replenishing section configured to replenish gas to the liquid casing;
- and
- a liquid replenishing section configured to replenish the liquid to the liquid casing, wherein
- the liquid circulation device increases pressure of the inside of the liquid casing by replenishing the gas to the liquid casing with the gas replenishing section and replenishing the liquid to the liquid casing with the liquid replenishing section, and meets a relation (ΔP1*(d1)̂2/L1)/(ΔP2*(d2)̂2/L2)>μ1/μ2 in a case of setting a diameter of a flow path between the liquid casing and the gas replenishing section as d1, a length of the flow path between the liquid casing and the gas replenishing section as L1, pressure generated by sending the gas by the gas replenishing section as ΔP1, viscosity of the gas as μ1, a diameter of a flow path between the liquid casing and the liquid replenishing section as d2, a length of the flow path between the liquid casing and the liquid replenishing section as L2, pressure generated by sending the liquid by the liquid replenishing section as ΔP2, and viscosity of the liquid as μ2.
6 more elements
(canceled)
A method of circulating liquid within an inkjet apparatus, comprising:
- circulating a liquid between a liquid chamber and a liquid ejection section within a liquid casing;
- replenishing gas to the liquid casing;
- and
- replenishing the liquid to the liquid casing, wherein
- replenishing the gas to the liquid casing replenishing section and replenishing the liquid increases pressure inside of the liquid casing, and meets a relation (ΔP1*(d1)̂2/L1)/(ΔP2*(d2)̂2/L2)>μ1/μ2 in a case of setting a diameter of a flow path between the liquid casing and a gas replenishing section as d1, a length of the flow path between the liquid casing and the gas replenishing section as L1, pressure generated by sending the gas by the gas replenishing section as ΔP1, viscosity of the gas as μ1, a diameter of a flow path between the liquid casing and a liquid replenishing section as d2, a length of the flow path between the liquid casing and the liquid replenishing section as L2, pressure generated by sending the liquid by the liquid replenishing section as ΔP2, and viscosity of the liquid as μ2.
2 more elements
(canceled)
(canceled)
Dependencies are inferred from the claim text.