Shutter structure for toner refill cartridge

A toner cartridge, comprising:

• a body including a first toner discharge portion to discharge a toner, the body comprising a first body and a second body, wherein the first body is to accommodate the toner and includes the first toner discharge portion;
• a discharge shutter, including a first interference portion, to rotate relative to the body about a first rotation axis to a discharge position at which the toner is allowed to be discharged via the first toner discharge portion and a closed position at which the toner is prevented from being discharged via the first toner discharge portion, wherein the first toner discharge portion is eccentrically located with respect to the first rotation axis, the discharge shutter includes a second toner discharge portion that is not aligned with the first toner discharge portion when the discharge shutter is at the closed position and is aligned with the first toner discharge portion when the discharge shutter is at the discharge position, the second body is coupled to the first body such that the discharge shutter is disposed between the second body and the first body, and the second body includes a through-hole portion through which the second toner discharge portion protrudes;
• and
• a locking member including a second interference portion corresponding to the first interference portion, supported by the body, to rotate about a second rotation axis different from the first rotation axis between a locked position and an unlocked position, the locked position being a position where the discharge shutter is at the closed position and the first interference portion is caught by the second interference portion such that the discharge shutter is prevented from rotating, and the unlocked position being a position where the discharge shutter is allowed to rotate, and
• when a force is applied to rotate the discharge shutter from the closed position to the discharge position and the locking member is at the locked position, a normal component of a force applied to the second interference portion by the first interference portion is directed in a direction away from a location of the second rotation axis about which the locking member is to rotate.

A toner cartridge, comprising:

• a body to accommodate a toner and including a first toner discharge portion;
• a discharge shutter to rotate relative to the body about a first rotation axis between a closed position at which the toner is prevented from being discharged via the first toner discharge portion and a discharge position at which the toner is dischargeable via the first toner discharge portion;
• a locking member, supported by the body, to rotate about a second rotation axis different from the first rotation axis between a locked position at which the discharge shutter is locked at the closed position and an unlocked position at which the discharge shutter is allowed to rotate to the discharge position, wherein the first rotation axis and the second rotation axis both extend along a longitudinal direction of the body;
• and
• a locking spring to apply to the locking member an elastic force in a direction in which the locking member returns to the locked position, and
• when a force is applied to rotate the discharge shutter from the closed position to the discharge position and the locking member is at the locked position, a normal component of a force applied to the locking member by the discharge shutter is directed in a direction away from a location of the second rotation axis about which the locking member is to rotate.