DEVELOPER SUPPLY CONTAINER, DEVELOPER SUPPLYING APPARATUS AND IMAGE FORMING APPARATUS

摘要

A developer supply container, the developer supply container includes a developer accommodating chamber; a rotatable feeding portion; a developer discharging chamber including a discharge opening; a driving force receiving portion for receiving a rotational force for rotating the feeding portion; an pump capable of changing an inside volume of the accommodating chamber in a longitudinal direction of the container to apply a pressure to the discharge opening; a driving force converter for converting the rotational force into a feeding driving force for feeding the developer by an operation of the pump in a longitudinal direction of the container; and wherein an expansion and contraction stroke of the pump provided by the converter in a initial predetermined number of rotations in a initial stage is different from that in a subsequent stage after the initial stage.

主权项

1. A developer supply container detachably mountable to a developer supplying device, said developer supply container comprising:
a developer accommodating chamber capable of accommodating a developer; a rotatable feeding portion configured to feed the developer in said developer accommodating chamber; a developer discharging chamber including a discharge opening for permitting discharge of the developer fed by said feeding portion; a driving force receiving portion configured to receive a rotational force for rotating said feeding portion; an pump portion capable of changing an inside volume of said developer accommodating chamber in a longitudinal direction of said developer supply container to apply a pressure at least to said discharge opening; and a driving force converting portion configured to convert the rotational force received by said driving force receiving portion into a feeding driving force for feeding the developer by an operation of said pump portion in a longitudinal direction of said developer supply container; wherein an expansion and contraction stroke of said pump portion provided by said driving force converting portion in a initial predetermined number of rotations in a initial stage is different from that in a subsequent stage after the initial stage.