A tank is formed with a filling port for filling ink. A cap is attached to the filling port so as to close the filling port. A filling port sensor detects whether the cap is attached to or detached from the filling port. A recorder records an image on a recording sheet by using ink supplied from the tank. An operating interface receives an operation input. A memory stores an ink remaining amount in the tank. A controller controls a recording operation. In response to determining based on a detection signal of the filling port sensor that the cap is detached from the filling port and is again attached to the filling port, the controller receives a first input through the operating interface, the first input indicating that ink is filled into the tank; and updates the ink remaining amount stored in the memory, based on the first input.