| 摘要 |
An electrode member used for supplying power from an image forming apparatus body to a developing roller when a process cartridge detachably attachable to the apparatus body is attached to the apparatus body includes a conductive substrate, a hole provided in the substrate, an end of the hole being larger than a width of the hole, an elastic portion bent and raised along the hole, an electrode being able to contact the elastic portion, a rib provided opposite and along the end of the hole, an engagement hole for mounting the electrode member to a bearing of the developing roller, and a contact portion making contact with an inner surface of the developing roller, when the electrode member is mounted to the bearing.
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