| 摘要 |
PROBLEM TO BE SOLVED: To decrease leakage or scattering of toner from a toner carrying roller, and fogging, in a developing device, in an image forming apparatus and a developing method using a toner carrier roller having ruggedness formed on the surface. SOLUTION: The developing device includes: a container which houses toner; a toner carrier roller that is provided, on a surface thereof, with a plurality of convex sections which are regularly arranged and a concave section which surround the convex sections, is shaped approximately like a cylinder, and rotates while carrying a toner layer of charged toner supplied form the container on the surface thereof; and a restriction member that abuts on the surface of the toner carrier roller to form a restriction nip and restricts a thickness of the toner layer carried on the surface of the toner carrier roller in the restriction nip. The restriction member removes the toner layer on the convex sections from among the toner layer carried on the surface of the toner carrier roller at an upstream side end of the restriction nip in a rotation direction of the toner carrier roller. COPYRIGHT: (C)2009,JPO&INPIT |
