Patent ID: 7322682

Claim:
An ink-jet recording apparatus comprising: a pump that includes a housing, a rotor, a partition, a first passage, and a second passage, the housing having a cavity formed therein and also having an inlet port through which ink is sucked into the cavity and an outlet port through which ink is discharged out of the cavity, the rotor being rotatable within the cavity, the partition being, together with the rotor, rotatable within the cavity while being supported on the rotor such that both ends thereof can be in contact with an inner surface of the housing, the first passage being formed within the cavity and extending from the inlet port to the outlet port, the second passage being formed within the cavity to be longer than the first passage and extending from the inlet port to the outlet port via a side of the rotor opposite to the first passage; an ink-jet head to which ink is supplied from the pump; and a detector that detects whether or not the partition is disposed within a predetermined range, wherein, when the partition is disposed within the predetermined range, a flow resistance in the first passage can be higher than a flow resistance in the second passage.