Provided is a liquid-jet apparatus which can suppress liquid consumption by preventing air that can turn into bubbles from entering a liquid introducing columnar body in replacement of a liquid storage member and thus reducing a frequency of execution of a cleaning operation for discharging the bubbles inside a liquid passage. An ink introducing needle 21 in a printer includes: a needle-like protrusion 23 having a tapered portion 48 whose diameter is gradually increased toward its base from its tip; and a straight portion 51 formed linearly and continuously from the tapered portion 49. In the tapered portion 48 of the needle-like protrusion 23 in the ink introducing needle 21, groove portions 54 extending to an edge portion of the tapered portion 46 are provided.
