Container

A container that stores a fluid for use in an ink jet printer, the container comprising:

• a casing that defines a storage space for storing the fluid, and has an opening communicating with the storage space, the casing having a first end portion and a second end portion that is opposed to the first end portion and is separated from the first end portion by the storage space, the opening being located at the second end portion;
• a liquid conduit located at the first end portion and configured to pass the fluid from the storage space outside of the container;
• a film arranged at the second end portion and configured to cover the opening and seal the storage space at the second end portion;
• and
• a film attachment section arranged at the second end portion and configured to fix the film to the casing, wherein
• the casing includes a peripheral wall extending in an axial direction along a central axis of the container, the peripheral wall having an inner side facing the storage space, an outer side facing an exterior of the storage space and an end face in the axial direction,
• the end face of the peripheral wall has a first surface that surrounds a periphery of the opening, and faces the film,
• the outer side of the peripheral wall has a second surface that surrounds the opening at a position farther from the opening than the first surface, that has a portion at an angle intersecting the first surface, and that faces the film, and
• the film is welded to the second surface and not welded to the first surface.