Patent ID: 8116667
Filing Date: 2012-02-14
Classification: G03G

Abstract:
1. 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.