Patent ID: 11947280
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An image forming system comprising:
a developer supply container configured to contain developer; and
an image forming apparatus having an image bearing member, a developer bearing member, a frame, and a stirring member,
wherein the frame supports the developer bearing member and constitutes a developer housing chamber that is configured to contain developer to be supplied to the developer bearing member,
wherein the stirring member is rotatable in the developer housing chamber and the developer housing chamber has an attachment port to which the developer supply container is detachably attached,
wherein, by the developer supply container being deformed by force applied to the developer supply container from an outside of the image forming system, the developer contained in the developer supply container is supplied to the developer housing chamber through the attachment port,
wherein the image forming apparatus includes a cover movable between a first position and a second position,
wherein the first position is a position in which the cover does cover the attachment port, and the second position is a position in which the cover does not cover the attachment port to allow the developer supply container to be attached to the attachment port, and
wherein the image forming apparatus includes a sensor for detecting whether the cover is in the first position or in the second position, and when the sensor detects that the cover is in the second position, an execution of an image forming operation is unallowable.