| 摘要 |
An image forming apparatus for developing an electrostatic image formed on a photosensitive drum 1 with a developer, so as to form an image includes: a rotatable developing sleeve 44; a developing blade 46 for restricting a layer of a developer borne on the developing sleeve 44; developing means for developing the electrostatic image formed on the photosensitive drum 1 with the developer; vibrating means 50 for vibrating the developing blade 46; and control means for controlling a drive condition of the vibrating means 50 according to a printing ratio of the image formed.
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