Patent ID: 8733915

Claim:
A cartridge adapted to be removably attached to a cartridge mounting structure comprising a printing material supply tube fixed to a device front wall member and having a central axis extended in a predetermined direction, a rod provided on the device front wall member and having an axis parallel to the central axis, and a sensor configured to detect displacement of the rod, the cartridge comprising: a casing including: a front face located along a Z-axis direction, the front face having a first side located on a first side of the Z-axis direction and-a second side located on a second side opposite to the first side of the Z-axis direction; a printing material containing portion, containing an amount of printing material, provided inside the casing; a rod receiving portion formed in the front face and adapted to receive the rod, the rod receiving portion located on the front face at a middle position between the first side and the second side, wherein the front face, printing material containing portion and rod receiving portion are adapted and configured within the casing so that the rod is moveable along the direction of the axis and the extent of said movement will vary with a change in the amount of printing material remaining in the cartridge; a tube receiving portion formed in the front face and adapted to receive the printing material supply tube.