Abstract: A toner cartridge includes a first accommodating portion that accommodates toner; a second accommodating portion that is disposed on one side in a first direction with respect to the first accommodating portion and that accommodates toner; a first connection portion that is provided at the first accommodating portion and that connects the first accommodating portion to outside; and a second connection portion that is provided at an end portion of the second accommodating portion, the end portion being situated on another side of the second accommodating portion in the first direction, and that connects the second accommodating portion to outside, in which, of walls of the second accommodating portion, the walls being situated on one side of the second accommodating portion in a second direction that intersects the first direction, a wall that is situated at a position where the wall overlaps the second connection portion in the first direction has a curved portion that at least partly protrudes toward one sid

Abstract: A developer container includes: a first containing portion that contains new developer; a second containing portion that contains developer; a transport unit that transports the developer in the first containing portion toward an outside of the first containing portion; and a receiving unit that receives a driving force from a driving unit of a body of an image forming apparatus and transmits the driving force to the transport unit. The receiving unit is disposed such that a portion of the receiving unit is outwardly exposed at an end surface of one of the first containing portion and the second containing portion in an up-down direction, the exposed portion being in contact with the driving unit.

Abstract: A developer container includes: a containing unit that contains developer; a transport unit that transports the developer; and a receiving unit that receives a driving force transmitted from a transmitting unit of a body of an image forming apparatus and transmits the driving force to the transport unit. The developer container is removably attachable to the body of the image forming apparatus. The developer container includes a first rotation stopping portion and a second rotation stopping portion that is farther from the receiving unit than the first rotation stopping portion. When the developer container is attached to the body of the image forming apparatus, the first rotation stopping portion comes into contact with a first rotation stopper portion provided on the body of the image forming apparatus, and the second rotation stopping portion comes into contact with a second rotation stopper portion provided on the body of the image forming apparatus.

Abstract: A mounting/demounting structure includes: a mountable/demountable object including a body, a first projection provided at a first end of the body in a movable manner, and a second projection provided at a second end of the body in a shiftable manner; and a receptacle including a housing configured to house the object when mounted while covering it in at least two directions, first and second stoppers provided in the housing and configured to stop the first and second projections, respectively by engagement, the object including an abutment portion provided on the body and configured to abut against a part of the housing to keep a posture reduced in terms of an engagement amount between the second projection and the second stopper when the first projection is disengaged from the first stopper and the object is stopped at a tilt in the housing during demounting of the object from the receptacle.

Abstract: A mounting/demounting structure includes: a mountable/demountable object that is mountable or demountable by inserting or pulling the mountable/demountable object including a body, a first projection provided at a first end of the body in a movable manner, and a second projection provided at a second end of the body in a shiftable manner; and a receptacle including a housing portion configured to, when the mountable/demountable object is mounted, house the mountable/demountable object while covering the mountable/demountable object in at least two directions, a first stopper provided in the housing portion and configured to stop the first projection by engagement, and a second stopper provided in the housing portion and configured to stop the second projection by engagement, the mountable/demountable object including an abutment portion provided on the body and configured to abut against a part of the housing portion to keep a posture reduced in terms of an engagement amount between the second projection and