Patent ID: 8544994

Claim:
An ink cartridge comprising: an ink bag that at least includes two layers of flexible sheets disposed to face each other to form an ink storage portion configured to store ink inside; a spout that is provided on the ink bag and that includes a hollow portion that leads from a first opening to a second opening, wherein the first opening is communicatively connected with the ink storage portion, and the second opening is provided in a leading end portion of the spout and is open to an outside of the ink bag; and a case that houses the ink bag, wherein a longitudinal direction of the case is an axial direction of the spout that is provided on the ink bag, the case comprising: an end portion on a side of the second opening of the spout, the end portion comprising: a first corner portion, and a second corner portion, wherein the first corner portion is a corner portion that, in the axial direction, is located on a side of the first opening with respect to the leading end portion of the spout, and wherein the second corner portion is a corner portion that, in the axial direction, is located on a side opposite to the first opening with respect to the leading end portion of the spout, and a first surface portion and a second surface portion, wherein: the first surface portion extends from the first corner portion in the axial direction, the second surface portion is at least partly opposite the first surface portion and extends in the axial direction, and a length of the first surface portion in the axial direction is different from a length of the second surface portion in the axial direction, wherein: a width in a first direction is smaller than a width in a second direction in the case, wherein: the first direction is a direction that is orthogonal to an extending direction of a line connecting the first corner portion and the second corner portion and to the axial direction, and the second direction is a direction that is orthogonal to the first direction and to the axial direction, an axial line of the spout is, in the second direction, located closer to the first surface portion extending from the first corner portion than the second surface portion, and the leading end portion of the spout is located inside of the case with respect to the line connecting the first corner portion and the second corner portion.