Liquid level detection unit and liquid ejection device
AssigneeSeiko Epson Corporation
InventorSeiji TOJO
Life of this patent
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Abstract
A liquid level detection unit includes a liquid level tube extending along a height direction and opening to atmosphere in an upward direction; an inflow section connected to a flow path that causes liquid to flow into the liquid level tube from a tank connected to a liquid ejection head that ejects liquid; a reading section that outputs to a control section a reading result obtained by reading the liquid level of the liquid in the liquid level tube; and a base section in which the liquid level tube, the inflow section, and the reading section are provided, wherein the liquid level tube is light-transmissive.
Claims16
A liquid level detection unit comprising:
- a liquid level tube extending along a height direction and opening to atmosphere in an upward direction;
- an inflow section connected to a flow path that causes liquid to flow into the liquid level tube from a tank connected to a liquid ejection head that ejects liquid;
- a reading section that outputs to a control section a reading result obtained by reading the liquid level of the liquid in the liquid level tube;
- and
- a base section in which the liquid level tube, the inflow section, and the reading section are provided, wherein the liquid level tube is light-transmissive.
A liquid ejection device comprising:
- a liquid ejection head configured to eject a liquid;
- a tank connected to the liquid ejection head;
- a liquid level detection unit for detecting a liquid level of the liquid in the tank;
- a flow path for guiding the liquid to flow from the tank into the liquid level detection unit;
- and
- a control section, wherein
- the liquid level detection unit includes
- a liquid level tube extending along a height direction and opening to atmosphere in an upward direction,
- an inflow section to which the flow path is connected,
- a reading section that outputs to the control section a reading result obtained by reading the liquid level of the liquid in the liquid level tube, and
- a base section in which the liquid level tube, the inflow section, and the reading section are provided,
- the liquid level tube is light-transmissive, and
- the control section detects a liquid level of the liquid in the tank based on a reading result by the reading section.
Dependencies are inferred from the claim text.