Abstract: In some examples, a developing device includes a developing container including an opening and to store a developer, a developing sleeve installed in the developing container and partially exposed to an outside of the developing container through the opening, a regulation member upstream of the opening in a rotation direction of the developing sleeve and to regulate an amount of the developer adhered to the developing sleeve and supplied to the opening, and a magnetic member inside the developing sleeve. The magnetic member includes a main pole facing the opening, a regulation pole facing the regulation member, and a catch pole upstream of the regulation pole in the rotation direction of the developing sleeve. The magnetic member is to cause adhesion of the developer in the developing container to the developing sleeve.

Abstract: An example development cartridge includes a shutter switchable between a closing position and an opening position to open and close a toner inlet through which a toner may be received, and a locking member switchable between a locking position to lock the shutter at the closing position and an unlocking position to allow the shutter to be opened.

Abstract: A toner cartridge includes a housing to contain toner and comprising a toner outlet adjacent to a front end in a longitudinal direction; a front cover coupled to the front end of the housing; a first coupling portion to couple the front cover to the housing based on a coupling force of the first coupling portion; and a shutter movable between an open position and a closed position to open and close the toner outlet, and to weaken the elastic coupling force of the first coupling portion when the shutter is moved from the closed position to the open position.

Abstract: A developer cartridge including a housing to contain a developer and including a developer outlet from which the developer is dischargeable. A transport member is arranged inside the housing to rotate to transport the developer to the developer outlet. A volume adjustment member is insertable inside the transport member opposite to the developer outlet to adjust an inside volume of the housing.

Abstract: A developer cartridge including a housing, a spring auger, and a rotation member. The housing accommodating a developer and including a first end portion and a second end portion in a lengthwise direction. The housing is to discharge the developer through a developer discharge outlet coupled to the housing and adjacent to one of the first end portion and the second end portion. The spring auger is located inside the housing and is to rotate to transport the developer to the developer discharge outlet. The rotation member is located at the first end portion of the housing and connected to a first end of the spring auger to rotate the spring auger. A first portion of a bottom surface of the housing is flat and a second portion of the bottom surface is internally convex from the first portion are repeatedly arranged on the bottom surface in the lengthwise direction.

Abstract: A developer cartridge including a housing to contain a developer and including a developer outlet from which the developer is dischargeable. A transport member is arranged inside the housing to rotate to transport the developer to the developer outlet. A volume adjustment member is insertable inside the transport member opposite to the developer outlet to adjust an inside volume of the housing.

Abstract: A developer cartridge including a housing, a spring auger, and a rotation member. The housing accommodating a developer and including a first end portion and a second end portion in a lengthwise direction. The housing is to discharge the developer through a developer discharge outlet coupled to the housing and adjacent to one of the first end portion and the second end portion. The spring auger is located inside the housing and is to rotate to transport the developer to the developer discharge outlet. The rotation member is located at the first end portion of the housing and connected to a first end of the spring auger to rotate the spring auger. A first portion of a bottom surface of the housing is flat and a second portion of the bottom surface is internally convex from the first portion are repeatedly arranged on the bottom surface in the lengthwise direction.