Patent ID: 7561836
Filing Date: 2009-07-14
Classification: G03G

Abstract:
1. A processing unit detachably mountable to an image forming apparatus main body, including: a unit main body including at least a developer carrier for feeding a developing agent to an image carrier to be formed with an electrostatic latent image; and a toner box accommodating the developing agent and detachably mountable to the unit main body, wherein the toner box includes a toner casing formed with a toner ejecting port for feeding the developing agent to the unit main body, and a toner-side blocking member for opening and closing the toner ejecting port, and the unit main body includes a process casing formed with a toner guiding port which is opposed to the toner ejecting port to receive the developing agent fed from the toner ejecting port when the toner box is mounted in the unit main body, a process-side blocking member for opening and closing the toner guiding port, and an open/close member provided on the process casing for opening and closing the toner ejecting port and the toner guiding port by the toner-side blocking member and the process-side blocking member when the toner box is mounted in the unit main body.