Toner bottle, supply unit, and image forming apparatus

A toner bottle capable of storing toner in a main body, comprising:

• a first shutter configured to cover a first supply port formed in an outer peripheral surface of the main body, the first shutter being movable in an outer peripheral direction along the outer peripheral surface of the main body;
• a pair of guiding members respectively formed on both ends of the first shutter, and configured to guide the first shutter in the outer peripheral direction;
• and
• a lock mechanism configured to fix the first shutter to achieve a closed sate of the first supply port,
• wherein the lock mechanism comprises a protrusion provided to the first shutter, the protrusion being capable of engaging with a recess formed in the outer peripheral surface,
• wherein fixing by the lock mechanism is released when the protrusion elastically deforms and is disengaged from the recess, and
• wherein the protrusion, the recess, and the first supply port are disposed along a virtual curve between the pair of guiding members.