A discharge control unit controls discharge from a discharge electrode at low voltage, has a high density mounting based on downsizing of the discharge control portion eliminates electric leakage and has excellent discharge stability. The discharge control unit includes: a heating portion including at least one heat-generating body and driver ICs electrically connected to the heat-generating bodies and caused to generate heat by flowing an electric current to an optional point of one heat-generating body or selectively flowing the same to a plurality of heat-generating bodies; and a heat generation portion insulating film covered on at least the heat-generating bodies; and discharge electrodes, to which voltage is applied, disposed at the heat generation portion insulating film so as to correspond to the heat-generating bodies; wherein discharge is carried out from discharge portions of the discharge electrodes selectively heated by the heat-generating bodies.