Patent ID: 8523306

Claim:
A printing apparatus comprising: a printing unit configured to discharge liquid from a printer nozzle and perform printing on a printing medium; a first tank configured to contain liquid to be supplied to the printing unit; a second tank configured to contain liquid to be supplied to the first tank; a pump configured to apply a pressure to the second tank so as to supply liquid from the second tank to the first tank; a detecting unit configured to detect an internal pressure of the second tank; and a control unit configured to cause the pump to be driven at a first driving speed, determined based on information of the printing medium and information of a printing mode, during a first predetermined period of time in a case where the internal pressure is lower than a predetermined value, wherein, in a case where the internal pressure does not exceed the predetermined value after the pump is driven at the first driving speed during the predetermined period of time, the control unit causes the pump to be driven at a second driving speed being faster than the first driving speed during a second predetermined period of time.