Fluid cartridge

An ink cartridge for an inkjet printer, the ink cartridge comprising:

• a bottom face and a front face;
• an ink interface on the front face for connection to a cartridge receiving structure;
• a guide track in the bottom face of the ink cartridge for guiding the cartridge along a straight line during insertion in the cartridge receiving structure for connecting the ink interface, wherein the guide track has a T-shaped cut out for guiding a corresponding T-rail guide of the cartridge receiving structure, said guide track extending parallel to said straight line;
• a latch track comprising a latch stop, said latch track and latch stop being disposed in the bottom face of the ink cartridge to guide, the latch track accommodating movement of a latch of the cartridge receiving structure to and from engagement with the latch stop;
• wherein the guide track and the latch track are formed from one integral cut out in the bottom face of the cartridge.