Toner cartridge for use in an image forming device

A toner cartridge for use in an image forming device having an imaging unit separate from the toner cartridge removably installed therein, the toner cartridge comprising, comprising:

• a housing having a top, a bottom, a front, and a rear positioned between a first side and a second side of the housing, the housing defining a reservoir for containing toner therein;
• an exit port in fluid communication with the reservoir and facing downward on the front of the housing near the first side;
• a shutter positioned at the exit port that is movable between an open position to permit toner to pass out of the exit port and a closed position to prevent toner from passing out of the exit port;
• a toner delivery system for transferring toner from the reservoir out of the exit port that includes a main interface gear for providing rotational power to the toner delivery system, a portion of the main interface gear being exposed on the front of the housing near the top of the second side and engagable with a corresponding drive gear in the image forming device;
• a linkage operatively connected to the shutter to open the shutter upon being actuated by an engagement feature on the image forming device;
• a rearward facing opening near the first side of the housing for receiving the engagement feature on the image forming device;
• an interlock operatively engaged with the linkage and biased toward a locked position preventing the linkage from opening the shutter, the interlock being movable to an unlocked position upon being actuated by an engagement feature on the imaging unit that permits the linkage to open the shutter;
• and
• a forward facing slot near the first side of the housing for receiving the engagement feature on the imaging unit.