Abstract: An ink cartridge includes an ink bag that stores ink, a substantially box-shaped case that houses the ink bag, a recessed portion that is disposed in an end portion of the case, and that is indented in a direction further to an inner side of the case than an outer surface of the case such that that the recessed portion is open in at least two directions with respect to the outer surface of the case, and a protruding portion that protrudes from a bottom portion of the recessed portion.

Abstract: An ink cartridge includes an ink bag that is 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, and a case that houses the ink bag, an end portion of the case on a side of the second opening including at least a first corner portion and a second corner portion, a width in a first direction being smaller than a width in a second direction in the case, an axial line of the spout being, in the second direction, located closer to one end portion of the case on a side having the first corner portion, and at least one of the first corner portion and the second corner portion forming one of an obtuse angle and a curved surface.

Abstract: An ink cartridge includes an ink bag that is 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, and a case that houses the ink bag, an end portion of the case on a side of the second opening including at least a first corner portion and a second corner portion, a width in a first direction being smaller than a width in a second direction in the case, an axial line of the spout being, in the second direction, located closer to one end portion of the case on a side having the first corner portion, and the leading end portion of the spout being located inside of the case with respect to the line connecting the first corner portion and the second corner portion.

Abstract: An ink cartridge includes an ink bag that is configured to store ink inside, a spout that is provided on the ink bag and includes a hollow portion that leads from a first opening to a second opening, and a case that houses the ink bag, an end portion of the case on a side of the second opening including at least a first corner portion, a second corner portion, and a first surface portion, a width in a first direction being smaller than a width in a second direction in the case, an axial line of the spout being, in the second direction, located closer to one end portion of the case on a side having the first corner portion, and the leading end portion of the spout being located inside of the case with respect to the line connecting the first corner portion and the second corner portion.

Abstract: A work-sheet folding apparatus including a table having a hole; a support plate which is provided above the table and on which the work sheet is placed; a first folding member which cooperates with the support plate to fold an outer peripheral portion of the work sheet in a first direction perpendicular to the support plate; a first moving device which moves the first folding member in the first direction; second folding members which cooperate with the support plate to fold back the outer peripheral portion of the work sheet in a second direction parallel to the support plate; second moving devices which move the second folding members in the second direction; a support member which surrounds an outer peripheral portion of the support plate and which supports the second folding members; a pressing device which presses the support plate and the support member on the table; a movable member which is provided in the hole of the table such that the movable member is movable upward and downward; and a supporting