Valve mechanism and liquid ejecting system
AssigneeSeiko Epson Corporation
InventorsYukihiro Hanaoka, Toshiro Murayama, Daiki Tatsuta
Life of this patent
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Abstract
A first valve mechanism is a valve mechanism provided in a flow path coupled to a liquid ejecting head that ejects a liquid, and including a valve that opens/closes the flow path, a first communication liquid chamber that communicates with the flow path, and a first pressure receiving body that converts a pressure difference between a pressure of the first communication liquid chamber and a reference pressure into an operating force of the valve, in which a threshold pressure of the first communication liquid chamber for determining opening/closing of the valve is variable.
Claims11
A liquid ejecting system comprising:
- An ink jet liquid ejecting head that ejects a liquid;
- a circulation flow path formed together with a flow path inside the inkjet liquid ejecting head;
- and
- a valve mechanism provided in the flow path, comprising:
- a valve that opens/closes the flow path;
- a communication liquid chamber that communicates with the flow path;
- and
- a pressure receiving body that converts a pressure difference between a pressure of the communication liquid chamber and a reference pressure into an operating force of the valve, wherein
- a threshold pressure of the communication liquid chamber for determining opening/closing of the valve is variable.
A liquid ejecting system comprising:
- a liquid ejecting head that ejects a liquid;
- a circulation flow path formed together with a flow path inside the liquid ejecting head;
- and
- a valve mechanism provided in a middle of the circulation flow path, wherein
- the valve mechanism includes
- a first valve mechanism that is provided in an upstream flow path positioned upstream of the liquid ejecting head and that opens/closes a valve at a first threshold pressure, and
- a second valve mechanism that is provided in a downstream flow path positioned downstream of the liquid ejecting head and that opens/closes the valve at a second threshold pressure lower than the first threshold pressure.
Dependencies are inferred from the claim text.