Patent ID: 11934130
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. An image forming apparatus comprising:
an image forming portion configured to form a toner image;
a first accommodating container provided detachably mountable and configured to accommodate residual toner discharged from the image forming portion;
a second accommodating container provided detachably mountable and configured to accommodate the residual toner discharged from the image forming portion;
a feeding device capable of feeding the residual toner, discharged from the image forming portion, to the first accommodating container and the second accommodating container;
a first mount detecting portion configured to detect mount of the first accommodating container;
a second mount detecting portion configured to detect mount of the second accommodating container;
a first full detecting portion configured to detect a full state of the first accommodating container;
a second full detecting portion configured to detect a full state of the second accommodating container; and
a controller capable of controlling the feeding device based on a detection result of the first mount detecting portion, the second mount detecting portion, the first full detecting portion and the second full detecting portion;
wherein the controller controls the feeding device to stop feeding the residual toner to the first accommodating container and controls the image forming portion to continue the image forming operation, in a case it is detected that the first accommodating container is not full and the first accommodating container is dismounted based on the detection result of the first mount detecting portion and the first full detecting portion when the image forming operation is executed in a state in which the residual toner is fed to the first accommodating container by the feeding device, and
the controller executes following controls after detection of dismount of the first accommodating container until a predetermined time elapses:
(i) the controller controls the feeding device to stop feeding continuously the residual toner to the first accommodating container and not to start feeding the residual toner to the second accommodating container and controls the image forming portion to continue the image forming operation in a case it is detected continuously that the first accommodating container is not mounted based on the detection result of the first mount detecting portion, and
(ii) the controller controls the feeding device to resume feeding the residual toner to the first accommodating container and controls the image forming portion to continue the image forming operation in a case it is detected that the first accommodating container is mounted again based on the detection result of the first mount detecting portion.