An inkjet recording apparatus to which a first cartridge and a second cartridge are attachable, the first cartridge being formed with a first storage space for storing a first ink and comprising a first air passage allowing the first storage space to be communicated with an atmosphere, the second cartridge being formed with a second storage space for storing a second ink and comprising a second air passage allowing the second storage space to be communicated with the atmosphere, the inkjet recording apparatus comprising:
- a first tank comprising:
- a first storage chamber for storing the first ink supplied from the first cartridge;
- a first outlet port through which the first ink stored in the first storage chamber is allowed to flow out;
- and
- a first air flow path configured to allow the first storage chamber to be communicated with the atmosphere;
- a second tank comprising:
- a second storage chamber for storing the second ink supplied from the second cartridge;
- a second outlet port through which the second ink stored in the second storage chamber is allowed to flow out;
- and
- a second air flow path configured to allow the second storage chamber to be communicated with the atmosphere;
- a recording portion comprising:
- a first damper chamber communicated with the first storage chamber through the first outlet port and configured to store the first ink supplied from the first storage chamber;
- a second damper chamber communicated with the second storage chamber through the second outlet port and configured to store the second ink supplied from the second storage chamber;
- and
- a recording head comprising a nozzle and configured to eject the first ink stored in the first damper chamber and the second ink stored in the second damper chamber through the nozzle;
- a first switch configured to be switched between a first state and a second state, the first switch in the first state allowing communication of the first air flow path with the atmosphere while interrupting communication of the second air flow path with the atmosphere, the first switch in the second state allowing the communication of the second air flow path with the atmosphere while interrupting the communication of the first air flow path with the atmosphere;
- a pump comprising:
- a suction port configured to allow a fluid to be sucked therethrough;
- and
- a discharge port through which the fluid sucked through the suction port is discharged;
- a second switch configured to be switched between a third state and a fourth state, the second switch in the third state allowing communication of the first damper chamber with the suction port while interrupting communication of the second damper chamber with the suction port, the second switch in the fourth state allowing the communication of the second damper chamber with the suction port while interrupting the communication of the first damper chamber with the suction port;
- and
- a controller capable of controlling the first switch, the second switch and the pump, the controller being configured to perform:
- after attachment of the first cartridge and the second cartridge to the inkjet recording apparatus, an initial ink introduction comprising one of:
- a first drive process to drive the pump for a first period of time in a state where the first switch in the first state and the second switch is in the fourth state, to switch the first switch to the second state and to switch the second switch to the third state, and to drive the pump for a second period of time;
- and
- a second drive process to drive the pump for the second period of time in a state where the first switch is in the second state and the second switch is in the third state, to switch the first switch to the first state and to switch the second switch to the fourth state, and to drive the pump for the first period of time.