Fluid cartridge

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

• a front face with interfaces, including an ink socket and an air socket, wherein the ink socket and the air socket are disposed on a vertical axis which is parallel to a side wall of the cartridge, the ink socket being disposed below the air socket along the vertical axis as the cartridge is positioned for installation in the printer, the ink socket for connecting the cartridge to a fluid pen of the cartridge receiving structure, and wherein the ink socket connects to an inner volume of the cartridge and the air socket connects to a pressure structure in the inner volume of the cartridge to pressurize the inner volume;
• a bottom face comprising a latch stop and a latch track to guide and retain a latch of the cartridge receiving structure, the latch track comprising a locking track, an unlocking track and a latch re-direct wall;
• a guide interface in the bottom face, for engaging a guide of the cartridge receiving structure for guiding the cartridge along a straight line for connecting the interfaces with the cartridge receiving structure;
• a top face opposite the bottom face, the top face being at the top of the cartridge when the cartridge is connected to the cartridge receiving structure;
• an electrical circuit including a memory for storing cartridge data, an electrical interface of the electrical circuit being disposed above the air socket and behind the front face, the electrical interface comprising electrodes that extend in a plane perpendicular to the front face, the electrodes being arranged on a line parallel to the front face;
• and
• a cutout in the front face that is also open at the top face of the cartridge, the electrical interface of the electrical circuit being disposed in the cutout so as to be recessed into the front face.