Patent ID: 8408686
Filing Date: 2013-04-02
Classification: B41J

Abstract:
1. A liquid container that is mountable on a mounting portion of a liquid ejection apparatus, the liquid ejection apparatus having a liquid ejecting portion and an air pressurizing portion, the liquid container comprising: an air inlet port through which a pressurized air is introduced from an exterior, the air inlet port being connected to the air pressurizing portion when the liquid container is mounted on the mounting portion; a liquid outlet port that is connected to the liquid ejecting portion when the liquid container is mounted on the mounting portion, wherein, when air is introduced into the liquid container through the air inlet port, a liquid is sent from the liquid container to the liquid ejecting portion through the liquid outlet port by a pressure generated by the air; a liquid supply port through which the liquid is supplied to the liquid container; and a check valve provided in the liquid supply port, wherein the check valve opens when an external pressure of the liquid supply port is greater than an internal pressure of the liquid supply port, and is closed when the internal pressure is greater than the external pressure.