Liquid supplying mechanism, control program and image forming apparatus

A liquid supplying mechanism includes a control unit that controls a first pressure adjusting unit and a second pressure adjusting unit by control parameters each having a given initial value on the basis of a supply pressure detected by a first detecting unit and a discharge pressure detected by a second detecting unit, respectively, so that the supply pressure is higher than the discharge pressure while a back pressure at a nozzle surface is maintained at a given value, and when deviations of the detected supply pressure and the detected discharge pressure with respect to the corresponding target pressure value exceed a given reference value, controls each of the first pressure adjusting unit and the second pressure adjusting unit by changing the control parameters from the initial values.