Inkjet printing apparatus

An inkjet printing apparatus comprising:

• an ejection head having a nozzle from which ink is ejected;
• a supply tank storing the ink to be supplied to said ejection head;
• a recovery tank storing the ink recovered from said ejection head;
• a connection pipe forming connection between said supply tank and said recovery tank;
• a heater located in said connection pipe and heating the ink in said connection pipe;
• a circulation pump located between said heater and said recovery tank in said connection pipe and feeding the ink in said recovery tank to said supply tank;
• a replenishment tank storing the ink to be replenished into said supply tank;
• a replenishment pipe forming connection between said replenishment tank and said connection pipe;
• a replenishment pump located in said replenishment pipe and feeding the ink in said replenishment tank to said connection pipe;
• and
• a controller including a processor and a memory, the controller controlling said circulation pump and said replenishment pump by causing said processor to execute a program stored in said memory, wherein
• said replenishment pipe is connected to a position between said heater and said recovery tank in said connection pipe, and
• while said heater is working, said controller controls said circulation pump and said replenishment pump in such a manner that the flow rate of the ink to pass through said heater becomes equal to or greater than a limit flow rate.