| 摘要 |
PROBLEM TO BE SOLVED: To obtain a developing device which ensures stable developing properties free of occurrence of image unevenness and image fog by a structure using a recovery roll in a hybrid developing system, and to provide an image forming apparatus using the developing device. SOLUTION: The developing device comprises a toner carrier 2 which is opposed to an image carrier 1 and carries toner on its surface, a developer carrier 3 for supply which is disposed in a position opposite to the toner carrier 2 at a prescribed interval and supplies toner to the toner carrier 2, a developer carrier 4 for recovery which recovers toner from the toner carrier 2, and a conveyance member 5 which is disposed opposite to the two developer carriers 3, 4 and the toner carrier 2 and transfers a two-component developer between the two developer carriers 3, 4, wherein the surface roughness of the conveyance member 5 is set so that it is made larger than the surface roughness of the developer carrier 3 for supply. The image forming apparatus using the developing device is also provided. COPYRIGHT: (C)2005,JPO&NCIPI |
