| 摘要 |
An image forming apparatus includes an apparatus body having a photosensitive drum for carrying an image, a developing unit, provided within the apparatus body, including a developing agent storage unit for storing a developing agent and a developing roller for supplying the developing agent in the developing agent storage unit to the photosensitive drum, a driving gear, provided detachably to the developing roller of the developing unit, for driving the developing roller when the driving gear is connected to the developing roller, and a rigid shield member, attached removably in the developing unit, for separating the developing agent storage unit from the developing roller in the developing unit and separating the developing roller from the driving gear when the shield member is attached, and for making the developing agent storage unit communicate with the developing roller and connecting the developing roller and the driving gear when the shield member is removed.
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