Image forming apparatus including clutch to switch transmission of driving force

An image forming apparatus, comprising:

• a main housing having a supply section opening, the main housing including:
• a first conveying roller configured to convey a sheet;
• and a supply section cover configured to open and close the supply section opening and configured to be movable between a cover opened position at which the supply section cover is opened and a cover closed position at which the supply section cover is closed;
• a process unit including:
• a process housing configured to accommodate toner and having a toner receiving port;
• a developing roller;
• and an agitating member configured to agitate the toner in the process housing;
• a toner cartridge configured to be attached to and detached from the process unit through the supply section opening and configured to supply the toner to the process unit, the toner cartridge having at least a part being exposed outside the main housing in a state of the toner cartridge being attached to the process unit;
• and
• a controller,
• wherein the main housing further comprises:
• a first motor configured to drive the first conveying roller and the agitating member;
• a clutch configured to be switched between a transmission state where driving force of the first motor is transmitted to the first conveying roller and a non-transmission state where the driving force of the first motor is not transmitted to the first conveying roller;
• and
• a first detecting section configured to detect the toner cartridge being attached to the process unit, and
• the controller is configured to execute:
• a first switching process of switching the clutch from the transmission state to the non-transmission state in a case of the supply section cover being positioned in the cover opened position;
• and
• a first motor driving process of driving the first motor after the first switching process, wherein in a case where the first detecting section detects the toner cartridge being attached to the process unit with the supply section cover being positioned in the cover opened position, the controller is configured to execute the first switching process, and
• wherein in a case where the first detecting section does not detect the toner cartridge being attached to the process unit after the first switching process, the controller is configured to execute a second switching process of switching the clutch from the non-transmission state to the transmission state.