| 摘要 |
A developing device (11) includes a toner supplying roller (21), a developing roller (20) for transferring a one-component toner to a developing position by performing a developing rotation in an image forming operation and moving away from the developing position, a sealing member (30) arranged in a vicinity of the developing roller (20), and a toner layer regulating roller (22) arranged in contact with the developing roller (20) for locking a rotating operation in the image forming operation, for regulating the one-component toner which adheres on a surface of the developing roller (20) into a thin layer and for freely following the developing roller (20) in a non-image forming operation. <IMAGE> |
