Developing device and image forming apparatus

A developing device comprising:

• a toner carrier that is arranged oppositely to an image carrier on which an electrostatic latent image is held, and rotates with a toner charged and held on a peripheral surface thereof;
• a toner-flying electrode member spaced apart from the toner carrier;
• and
• an oscillating electric field generating power source that connects the toner-flying electrode member and the toner carrier, and generates an oscillating electric field which causes the toner to fly from the toner carrier,
• wherein the toner-flying electrode member includes:
• at least one conductive member that extends at least along a rotational axis direction of the toner carrier;
• an insulating coating layer that applies insulating coating continuously to a conductive member surface located on a toner carrier side so as to include, of the conductive member, at least the closest area to the toner carrier and the most protruding portion facing on a path in which the toner passes from the toner carrier toward the image carrier;
• and
• an exposed portion where the conductive member surface adjacent to the insulating coating layer and located on an image carrier side is exposed.