| 摘要 |
PURPOSE: A developing device, a developing cartridge, a process cartridge and image forming device are provided to lower an ability to expose a toner from a gap between a sheet member and a developing roller. CONSTITUTION: A developing device includes a developing container(7a), a developing roller, a support roller, a sheet member, a through-hole, and a filter member. The developing container accepts the developing member. The developing roller develops the developing member which dipped an electrostatic latent image formed on an image bearing member and is arranged to the opening of the developing container. The supply roller is arranged inside the developing container and supports the developing member to the developing roller by contacting with the developing roller. |
