| 摘要 |
A developing device comprising a developing section (4) provided with applicator means (12) for applying a developer to a latent electrostatic image and a supporting section (2) for supporting the developing section (4) rotatably between an operating position at which the developer held on the applicator means acts on image-bearing means (42) and a non-operating position at which the developer held on the applicator means (12) does not substantially act on the image-bearing means (42). According to a first aspect, positioning means (204) is provided which acts on the developing section (4) and holds it at the operating position. According to a second aspect, there is provided means for holding the developing section (4) at the non-operating position at the time of mounting the main body (6) of the developing device on an image-forming machine. According to a third aspect, when the main body (6) of the developing device is mounted on the image-forming machine, electrical connecting means provided in them are electrically coupled to each other. According to a fourth aspect, a toner cartridge (88) loaded detachably into the main body (6) of the developing device not necessarily of the above type cannot be detached from the main body of the developing device unless its discharge opening (296) is closed with a cover member (304). |
