Patent ID: 7318639

Claim:
An inkjet recording apparatus comprising: a recording head configured to eject liquid therefrom; a sub-tank configured to couple to the recording head so as to supply liquid to the recording head, the sub-tank including a negative pressure generating member arranged therein and communicating with the atmosphere; a carriage movably supporting the recording head and the sub-tank; a main tank arranged outside the carriage and adapted to store liquid supplied to the sub-tank; a supply path for supplying the liquid from the main tank; a depressurizing unit connected to the sub-tank and adapted to depressurize inside the sub-tank; a gas/liquid separating film arranged at a part to which the depressurizing unit of the sub-tank is connected; a flow path located between the negative pressure generating member and the recording head so as to facilitate liquid communication from the negative pressure generating member to the recording head, wherein the flow path includes a connection part adapted to connect to the supply path, so as to facilitate direct liquid communication from the supply path to the negative pressure generating member; and a filter provided between one of the flow path and the negative pressure generating part, between the flow path and the recording head, and in the connection part between the flow path and the supply path, wherein the connection part is connected at a downstream side compared to the filter arranged between the flow path and the negative pressure generating part.