Ink cartridge

Claims a miniaturization, a step of the intensity and capable of prolonging ink patient and oil ink box. The oil ink with the main shell (230) and upper cover (210). The main shell (230) is provided with a concave part and concave said includes an opening is adhered pliability film (302), (302) accepting ink between the concave part and pliability film. Upper cover (210) and pliability film clamping and concave part to the position with a an approximate hexagon spherical surface shape of the direction of the concave part mould part of the curvature (212). , A main shell (230) is from the concave said opening end On And extended to the lower provided with a gap face wall (234), a side wall of the periphery wall (232), face wall (237), the upper cover (210) and first face wall (234), a side wall (232), face wall (237) is.