Toner supply container and stirring rotation member

A developer supply container for supplying a developer into an image forming apparatus, said developer supply container comprising:

• a developer container for accommodating a developer;
• a flexible member for stirring the developer in said developer container;
• and
• a supporting member, connected to a rotation shaft, for fixedly supporting said flexible member,
• wherein said supporting member includes a parallel portion to which said flexible member is mounted and which extends substantially parallel with an overhanging direction of said flexible member, a crossing portion extending in a direction crossing with the overhanging direction from a downstream end of said parallel portion, and a connecting portion for connecting said parallel portion and said rotation shaft,
• wherein said crossing portion includes a first portion adjacent to said connecting portion and a second portion spaced from said connecting portion, and
• wherein said second portion has a length measured in the crossing direction, which is shorter than a length of said first portion, and said second portion has a length measured in an axial direction of said rotation shaft, which is longer than the length of said first portion.