DEVELOPING DEVICE, DEVELOPER CARRIER AND IMAGE FORMING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a developing device by which M/S (mass per unit area) on a developer carrier is stably applied by making hardly changeable the unevenness on the surface of the developer carrier even in image development for many sheets and also making hardly causable a toner soiling. SOLUTION: In the developing device having a developer container storing two-component type developer consisting of a magnetic carrier and non-magnetic toner and the developer carrier to form and carry the thin layer of the two- component type developer stored in the developer container on the surface and to feed the two-component type developer to a developing area, the developer carrier possesses at least a base body 11b and a layer coated with a resin 11a formed on the base body surface, and the layer coated with a resin incorporates at least a coating resin and particles which are dispersed in the coating resin and whose hardness is as high as a Moh's hardness of >=6.