| 摘要 |
A developing unit and an electrophotographic image forming apparatus with the same, the developing unit having a simple structure for driving internal rotary components. In the developing unit, a photoconductor gear is formed on a side of a photoconductor to be rotated by an external driving force, a developer roller gear is formed on a side of a developer roller and engaged with the photoconductor gear to be rotated by the photoconductor gear, an idle gear is engaged with the developer roller gear to be rotated by the developer roller gear, a toner-supply roller gear is formed on a side of a toner-supply roller and engaged with the idle gear to be rotated by the idle gear, and an agitator gear is formed on a side of an agitator and engaged with the toner-supply roller gear to be rotated by the toner-supply roller gear.
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