| 主权项 |
1. An image forming apparatus comprising:
a body of the image forming apparatus; and a cartridge configured to be installed with respect to the body, wherein the cartridge includes:
a developer accommodating portion configured to accommodate a developer;a developing portion configured to support a developer holding member configured to hold the developer thereon; anda shutter configured to be movable between an open position at which the shutter opens a communication port allowing the developer accommodating portion to communicate with the developing portion, and a closed position at which the shutter closes the communication port, the body includes:
a detecting means for detecting a state of the cartridge which changes as the cartridge is used;a shutter driving gear configured to drive the shutter, wherein the shutter is configured to move between the open position and an intermediate position, which is located between the open and closed positions, under a condition that an image forming operation is being executed; anda controller connected to the detecting means, the controller being configured to judge whether a cartridge exchange timing for exchanging the cartridge has arrived, based on the state of the cartridge detected by the detecting means, and configured to control the shutter driving gear to move the shutter from the open position to the closed position when the controller judges that the cartridge exchanging timing has arrived. |
