Liquid container and liquid ejection apparatus

1. A liquid container comprising:

a container body including a storage chamber configured to store a liquid and a supply port configured to supply the liquid to the storage chamber; and

a plug member configured to be detachable from the container body so as to seal the supply port, the plug member including a body portion located outside the storage chamber and the supply port in the container body in an attached state where the plug member is attached to the container body and a plug portion located inside the storage chamber and the supply port in the attached state, wherein

the plug portion has a press-fitted portion to be press-fitted into the supply port in the attached state and a leading end portion exposed to the storage chamber on a leading end side of the press-fitted portion in the attached state,

in the attached state, an axial line of the plug portion is perpendicular to an opening surface of the supply port, and

in the attached state, a leading end surface of the leading end portion is an inclined surface inclined with respect to a surface of the plug portion which is perpendicular to the axial line, and the inclined surface is inclined such that a side of the inclined surface located below in a vertical direction protrudes, in a direction of the axial line, from a side of the inclined surface located above in the vertical direction.

2. The liquid container according to claim 1 , wherein

the plug portion has a generally cylindrical shape and an outer peripheral surface including a first region to be press-fitted into the supply port and a second region exposed to the storage chamber on the leading end side of the first region,

the press-fitted portion is the first region, and

the leading end portion includes the second region and the leading end surface.

3. The liquid container according to claim 1 , wherein

the supply port is formed of:

an outer opening that is open to the outside of the container body;

an inner opening that is open into the storage chamber; and

an inner peripheral surface connecting the outer opening and the inner opening, and

the inner opening is located below the outer opening.

4. The liquid container according to claim 3 , wherein, in the attached state, a gravity direction lowest point of the inclined surface is located below a gravity direction lowest point at the inner peripheral surface of the supply port in a gravity direction.

5. The liquid container according to claim 3 , wherein, when it is assumed that, in a cross section along a vertical direction including the axial line of the plug portion in the attached state, an angle formed between a first virtual line connecting a lowest end point of the leading end surface and a point of contact with a lowest end point of the inner opening at the leading end portion and a vertical virtual line extending upward from the lowest end point of the leading end surface in the vertical direction is A and an angle formed between a second virtual line connecting the lowest end point of the leading end surface and a highest end point of the leading end portion and the vertical virtual line is B, A≥B is satisfied.

6. The liquid container according to claim 3 , wherein the supply port has a liquid wiping portion that slidably moves against a region of the leading end portion of the plug portion in the attached state which is located on a side of the storage chamber rather than on a side of the supply port to wipe off the liquid when the plug member is detached from the container body.

7. The liquid container according to claim 6 , wherein the liquid wiping portion is a portion having a depressed shape or a protruding shape provided in a region of the inner peripheral surface forming the supply port which is located at least below in the vertical direction.

8. The liquid container according to claim 3 , wherein

the body portion of the plug member includes:

a covering portion that comes into contact with an edge portion of the outer opening of the supply port;

a supporting portion connecting the covering portion to another member other than the plug member; and

a protruding portion protruding from the covering portion outside the container body,

the supporting portion is provided on an upper side of the covering portion in the vertical direction, and

the protruding portion is provided on a lower side of the covering portion in the vertical direction.

9. A liquid ejection apparatus comprising:

a liquid ejection head that ejects a liquid; and

the liquid container according to claim 1 .

10. The liquid ejection apparatus according to claim 9 , further comprising:

an apparatus main body in which the liquid container is embedded.

11. The liquid ejection apparatus according to claim 10 , wherein, in a state where the liquid container is embedded in the apparatus main body, the plug member is detached from the supply port to allow the liquid to be supplied from the supply port into the storage chamber.