Structure of developer replenishing container

A developer replenishing container for use with an electrophotographic image forming apparatus comprising:

• a cylindrical body portion having a spiral guide way on an inner side thereof to guide developer out of said body portion, and a bottle neck at an upper end of said cylindrical body portion for output of the developer, wherein
• a developer guide cone between said cylindrical body portion and said bottle neck defines a spiral guide wall portion and a spiral developer flow passageway for guiding developer from said cylindrical body portion toward said bottle neck, said developer guide cone having a diameter made gradually reduced toward said bottle neck, and an angle of slope within about 15°˜45°, said spiral guide wall portion having a depth within about 3˜18 mm, said spiral developer flow passageway having a rear end smoothly extended to said bottle neck in a flush manner for guiding developer to said bottle neck.