Toner cartridge including shutter rotatable between first position and second position

A toner cartridge comprising:

• a first casing extending in an extending direction, the first casing having a first internal space capable of accommodating toner;
• a second casing positioned at one end portion of the first casing in the extending direction, the second casing having:
• a second internal space smaller than the first internal space, the second internal space being connected to the first internal space;
• and
• a first opening allowing toner in the second internal space to be discharged;
• an auger screw configured to convey toner in the first internal space to the second internal space, the auger screw being rotatable about a first rotation axis extending in the extending direction, the auger screw extending from the first internal space to the second internal space;
• and
• a shutter positioned at the one end portion of the first casing in the extending direction, the shutter being rotatable relative to the second casing about a second rotation axis between a first position in which the shutter closes the first opening and a second position in which the shutter opens the first opening, the second rotation axis extending in the extending direction,
• wherein the second casing further has a second opening allowing air in the second internal space to be sent to an outside of the second casing, and
• wherein, in a state where the shutter is at the second position, the shutter does not close the second opening.