Patent attributes
A liquid container includes: a liquid containing chamber for containing a liquid therein; a liquid supply port for connecting to a liquid receiving portion of an apparatus and supplying the liquid to the apparatus; an atmosphere opening port for introducing external air into the liquid containing chamber through an atmosphere opening flow passage as the liquid is consumed, the atmosphere opening port being provided to be located at a lower surface of the liquid container in a gravity direction when the liquid container is mounted on the apparatus; a sealing film that is adhered to close the atmosphere opening port and is removable before the liquid container is connected to the apparatus; and a liquid trap chamber that is provided in the atmosphere opening flow passage to prevent liquid leakage from the atmosphere opening port.