| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus suppressing defective printing by solidified ink.SOLUTION: An image forming apparatus includes a control unit being switched to a standby state, a maintenance state and a printing state. In the maintenance state, the control unit closes an air valve and operates a first pump supplies ink from a first tank to the second tank and thereby increase the pressure in the second pump, and when a sensor detects that the ink of a second tank is reduced by discharging the ink from a nozzle of a head by the pressure of a second tank, the control unit opens the air valve to be switched in a printing state, and when a predetermined time elapses after an operation of the first pump before the sensor detects the reduction of the ink of the second tank, the control unit excludes the solidified ink from the nozzle by a maintenance mechanism. |
