Image forming apparatus

A liquid container comprising:

• a liquid containing member configured to contain liquid to be supplied to a recording head for jetting liquid droplets, the liquid containing member having flexibility;
• and
• an outer container configured to accommodate the liquid containing member, wherein
• the liquid containing member includes a rectangular parallelepiped part and a quadrangular pyramid part,
• the liquid containing member includes a liquid supply opening that is provided at a tip part of the quadrangular pyramid part, the liquid supply opening being directed downward when the liquid containing member is used,
• the liquid supply opening is fixed to one end part of the outer container,
• the quadrangular pyramid part is positioned below the rectangular parallelepiped part when the liquid containing member is used,
• a plane part provided on a side of the parallelepiped part of the liquid containing member opposite to the liquid supply opening is fixed to an inner surface of another end part of the outer container, and substantially a whole surface of the plane part is in contact with the inner surface of the another end part of the outer container when the liquid containing member is used,
• the plane part is positioned above the liquid supply opening when the liquid containing member is used, and
• two valley folds are provided on respective sides of liquid containing member, and the liquid containing member is folded according to the two valley folds.