An image forming apparatus comprising: an image bearing member configured to bear a developer image; a charging member configured to contact the image bearing member and charge a surface of the image bearing member; transfer means configured to transfer the developer image; developing means comprising: a developing member configured to supply developer having a predetermined polarity to the image bearing member to form a developer image; a regulation member configured to regulate a thickness of a developer layer borne on the developing member; a developing power supply configured to apply a developing voltage having the same polarity as the predetermined polarity to the developing member; a regulation power supply configured to apply a regulation voltage having the same polarity as the predetermined polarity to the regulation member; and a controller configured to control the developing power supply and the regulation power supply; wherein the developing member is configured to collect, during an image forming operation to form the developer image, the developer remaining on the image bearing member after the developer image is transferred by the transfer means; wherein, in a case where the charging member is new, the controller controls a supply operation for supplying developer to be performed prior to the image forming operation in such a manner that the developer having a polarity different from the predetermined polarity adheres to a surface of the charging member, wherein the controller controls, in the supply operation, an absolute value of the regulation voltage to be larger than or equal to an absolute value of the developing voltage; and wherein the controller controls the regulation voltage applied in the supply operation is closer to the developing voltage than the regulation voltage applied in the image forming operation. an image bearing member configured to bear a developer image; a charging member configured to contact the image bearing member and charge a surface of the image bearing member; transfer means configured to transfer the developer image; developing means comprising: a developing member configured to supply developer having a predetermined polarity to the image bearing member to form a developer image; a regulation member configured to regulate a thickness of a developer layer borne on the developing member; a developing member configured to supply developer having a predetermined polarity to the image bearing member to form a developer image; a regulation member configured to regulate a thickness of a developer layer borne on the developing member; a developing power supply configured to apply a developing voltage having the same polarity as the predetermined polarity to the developing member; a regulation power supply configured to apply a regulation voltage having the same polarity as the predetermined polarity to the regulation member; and a controller configured to control the developing power supply and the regulation power supply; wherein the developing member is configured to collect, during an image forming operation to form the developer image, the developer remaining on the image bearing member after the developer image is transferred by the transfer means; wherein, in a case where the charging member is new, the controller controls a supply operation for supplying developer to be performed prior to the image forming operation in such a manner that the developer having a polarity different from the predetermined polarity adheres to a surface of the charging member, wherein the controller controls, in the supply operation, an absolute value of the regulation voltage to be larger than or equal to an absolute value of the developing voltage; and wherein the controller controls the regulation voltage applied in the supply operation is closer to the developing voltage than the regulation voltage applied in the image forming operation.