Process cartridge including a drum unit and a toner cartridge having a toner accommodation chamber and a waste-toner accommodation chamber

A process cartridge comprising:

• a drum unit comprising:
• a photosensitive drum;
• a frame comprising:
• a first side plate;
• a second side plate;
• and
• a first connection portion located between the first side plate and the second side plate in an axial direction in which a rotation axis of the photosensitive drum extends, the first connection portion having a toner receiving port, the first connection portion comprising:
• a shutter being movable between an open position in which the toner receiving port is opened and a closed position in which the toner receiving port is closed;
• a developing section being movable relative to the photosensitive drum, the developing section comprising:
• a developing roller;
• and
• a developing frame for supporting the developing roller;
• and
• a seal member sealing between the first connection portion and the developing frame;
• and
• a toner cartridge attachable to and detachable from the drum unit, the toner cartridge comprising:
• a toner accommodating chamber for accommodating toner;
• and
• a second connection portion being connected to the first connection portion when the toner cartridge is attached to the drum unit.