A developer supply container comprising: a rotatable developer accommodating portion capable of accommodating a developer; a storage portion capable of storing the developer; said storage portion being provided with a discharge opening configured to permit discharge of the developer from said storage portion ; a pump portion alternately changeable between a maximum volume state and a minimum volume state for discharging the developer through said discharge opening ; and characterized by further comprising: a discharge suppressing portion movable between a first position in which said discharge suppressing portion is remote from said discharge opening and a second position in which said discharge suppressing portion is close to said discharge opening so that discharge of the developer through said discharge opening is prevented; and a pushing portion integrally rotatable with said developer accommodating portion and configured to contact said discharge suppressing portion to alternately move said discharge suppressing portion between the first position and the second position, with the rotation of said developer accommodating portion , wherein said pushing portion places said discharge suppressing portion in the second position for a predetermined period of time after said pump portion reaching the minimum volume state, when said developer accommodating portion is rotated. a rotatable developer accommodating portion capable of accommodating a developer; a storage portion capable of storing the developer; said storage portion being provided with a discharge opening configured to permit discharge of the developer from said storage portion ; a pump portion alternately changeable between a maximum volume state and a minimum volume state for discharging the developer through said discharge opening ; and characterized by further comprising: a discharge suppressing portion movable between a first position in which said discharge suppressing portion is remote from said discharge opening and a second position in which said discharge suppressing portion is close to said discharge opening so that discharge of the developer through said discharge opening is prevented; and a pushing portion integrally rotatable with said developer accommodating portion and configured to contact said discharge suppressing portion to alternately move said discharge suppressing portion between the first position and the second position, with the rotation of said developer accommodating portion , wherein said pushing portion places said discharge suppressing portion in the second position for a predetermined period of time after said pump portion reaching the minimum volume state, when said developer accommodating portion is rotated. a discharge suppressing portion movable between a first position in which said discharge suppressing portion is remote from said discharge opening and a second position in which said discharge suppressing portion is close to said discharge opening so that discharge of the developer through said discharge opening is prevented; and a pushing portion integrally rotatable with said developer accommodating portion and configured to contact said discharge suppressing portion to alternately move said discharge suppressing portion between the first position and the second position, with the rotation of said developer accommodating portion , wherein said pushing portion places said discharge suppressing portion in the second position for a predetermined period of time after said pump portion reaching the minimum volume state, when said developer accommodating portion is rotated. <EOS>