| 摘要 |
The developing apparatus (17) has a rotatable developer bearing member (18), a bearing member (55) for holding the developer bearing member rotatably, and a magnet seal member (50) for preventing a leakage of a developer from an end portion of the developer bearing member in a lengthwise direction thereof to the lengthwise direction. In the developing apparatus, the seal member (50,50d) is located by the bearing member (55d) with respect to the periphery of said developer roller (18). |
