PROBLEM TO BE SOLVED: To provide a charging device capable of suppressing an increase in size of an apparatus and increasing the concentration of generated ozone while simultaneously performing a charging function and an ozone generating function. A charging device includes a charging unit having a discharge electrode having a dynamic coating formed on its surface, a counter electrode arranged to face the discharge electrode, a control unit for controlling energization of the discharge electrode, and humidity. It is provided with a humidity detection unit for detecting. When the humidity detected by the humidity detection unit is equal to or lower than the predetermined humidity, the control unit controls to raise the temperature of the discharge electrode to the predetermined temperature or higher by energizing the discharge electrode. [Selection diagram] Fig. 5【課題】荷電機能とオゾン発生機能を同時に果たしつつ、装置の大型化を抑制するとともに、発生するオゾン濃度を高めることができる荷電装置を提供する。【解決手段】荷電装置は、表面に不動態被膜が形成される放電電極と、放電電極に対向配置される対向電極とを有する荷電部と、放電電極への通電を制御する制御部と、湿度を検出する湿度検出部とを備える。制御部は、湿度検出部で検出される湿度が所定湿度以下のとき、放電電極への通電によって放電電極の温度を所定温度以上まで高めるように制御する。【選択図】図５
