Liquid ejection apparatus

1. A liquid ejection apparatus comprising:

a liquid ejection head configured to eject supplied liquid,

a storage unit configured to store the liquid to be supplied to the liquid ejection head, wherein the storage unit includes a chamber configured to store the liquid and a containing member configured to be detachable from the chamber and to contain liquid to be supplied to the chamber, and wherein, by attaching the containing member to the chamber, the liquid stored in the containing member flows into the chamber,

a pivot member configured to be immersed in the liquid stored in the storage unit and be revolvable according to an amount of the liquid, wherein the pivot member is disposed in the chamber,

a support member configured to support the pivot member in a revolvable manner, wherein the support member is disposed at the bottom of inside the storage unit,

a detection unit configured to detect the amount of the liquid by use of the pivot member,

a pivot unit including a magnetic member disposed on the pivot member, and

an electromagnet configured to attract the magnetic member.

2. The liquid ejection apparatus according to claim 1 ,

wherein, in the pivot member, the magnetic member is disposed on a side closer to the support member than to a center of gravity of the pivot member.

3. The liquid ejection apparatus according to claim 1 , wherein the pivot member includes

a float configured to have a specific gravity smaller than that of the liquid stored in the storage unit and be supported via the support member in a revolvable manner in the storage unit, and

a detected part disposed on the float via an arm part and configured to be detectable by the detection unit.

4. The liquid ejection apparatus according to claim 1 ,

wherein in the case that the electromagnet is energized, the magnetic member is attracted to the electromagnet member.

5. A liquid ejection apparatus comprising:

a liquid ejection head configured to eject supplied liquid,

a storage unit configured to store the liquid to be supplied to the liquid ejection head,

a liquid supply tube configured to supply the liquid from the storage unit to the liquid ejection head,

a pivot member configured to be immersed in the liquid stored in the storage unit and be revolvable according to an amount of the liquid,

a detection unit configured to detect the amount of the liquid by use of the pivot member, and

wherein the storage unit further includes a generation unit configured to generate a flow to the liquid, so that the pivot member in a state of being immersed in the liquid stored in the storage unit can be made to pivotally move.

6. The liquid ejection apparatus according to claim 5 ,

wherein the pivot member includes a receiver part configured to receive the flow of the liquid generated by the generation unit.

7. The liquid ejection apparatus according to claim 6 ,

wherein the receiver part is located to face the generation unit.

8. The liquid ejection apparatus according to claim 5 ,

wherein the pivot member includes

a float configured to have a specific gravity smaller than that of the liquid stored in the storage unit and be supported via a support member in a revolvable manner in the storage unit, and

a detected part disposed on the float via an arm part and configured to be detectable by the detection unit.

9. The liquid ejection apparatus according to claim 5 ,

wherein the storage unit includes a chamber configured to store the liquid and a containing member configured to be detachable from the chamber and to contain liquid to be supplied to the chamber, and

wherein, by attaching the containing member to the chamber, the liquid stored in the containing member flows into the chamber.

10. The liquid ejection apparatus according to claim 9 ,

wherein the pivot member is disposed in the chamber.

11. The liquid ejection apparatus according to claim 9 ,

wherein the pivot member is disposed in the containing member.