Patent ID: 8099028

Claim:
A developer supply system comprising: a developer supply apparatus; and a developer supply container which is detachably mountable to said developer supply apparatus, wherein said developer supply container includes: a rotatable container body having an inner space configured and positioned to contain a developer; a feeding portion configured and positioned to feed the developer in said container body to discharge the developer out of said container body with a rotation of said container body; and a hooking portion configured and positioned to engage with said developer supply apparatus to receive a rotational force for rotating said container body, and wherein said developer supply apparatus includes: a driving member configured and positioned to apply the rotational force; a drive transmitting member configured and positioned to engage with said hooking portion to transmit the rotational force from said driving member to said hooking portion, said drive transmitting member, which has engaged with said hooking portion, being movable between a first position where said drive transmitting member and said driving member are engaged with each other and a second position where said drive transmitting member and said driving member are not engaged with each other; and a displacing member configured and positioned to displace said hooking portion to release an engagement between said hooking portion and said drive transmitting member which is in the second position.