Abstract: A liquid container includes 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 to seal the supply port, the plug member including a body portion located outside the storage chamber and the supply port and a plug portion located inside the storage chamber and the supply port. The plug portion has a press-fitted portion to be press-fitted into the supply port and a leading end portion exposed to the storage chamber, an axial line of the plug portion is perpendicular to an opening surface of the supply port, and a leading end surface of the leading end portion is an inclined surface inclined with respect to a surface of the plug portion.

Abstract: A liquid refilling mechanism includes a liquid container having an inlet and includes a liquid refilling container having a container main body and a nozzle portion to inject liquid in the container main body through the inlet and into the liquid container. The nozzle portion includes a leading end portion that projects outward from a center line of the nozzle portion and a nozzle projection portion positioned closer to the container main body than the leading end portion and that projects outward from an external wall surface of the nozzle portion. The inlet includes an insertion groove portion, a circumferential groove portion, and a fitting groove portion that extends from the circumferential groove portion and enables fitting of the liquid container and the nozzle projection portion. The circumferential groove portion extends from the insertion groove portion so that the nozzle projection portion is rotatable in a posture for liquid filling.

Abstract: A liquid container includes 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 to seal the supply port, the plug member including a body portion located outside the storage chamber and the supply port and a plug portion located inside the storage chamber and the supply port. The plug portion has a press-fitted portion to be press-fitted into the supply port and a leading end portion exposed to the storage chamber, an axial line of the plug portion is perpendicular to an opening surface of the supply port, and a leading end surface of the leading end portion is an inclined surface inclined with respect to a surface of the plug portion.