Image forming apparatus having toner replenishment container control
An image forming apparatus includes an apparatus body, a process unit having an image bearing member, a developer container configured to accommodate toner, a developing portion to develop an electrostatic latent image formed on the image bearing member into a toner image by using the toner accommodated in the developer container; and a replenishment port configured to allow replenishment of toner from the replenishment container, and a display portion. A controller notifies a user of information related to a toner amount by using the display portion in a case where it is determined that a lifetime of the process unit will expire before a sum of toner accommodated in the developer container and toner accommodated in the replenishment container is consumed, wherein the information related to a toner amount is a notification about toner, to be supplied from the replenishment container, which goes to waste.
1. An image forming apparatus to and from which a replenishment container accommodating toner is attachable and detachable and which is configured to form an image on a recording material, the image forming apparatus comprising:
an apparatus body;
a process unit comprising:
an image bearing member;
a developer container configured to accommodate toner;
a developing portion configured to develop an electrostatic latent image formed on the image bearing member into a toner image by using the toner accommodated in the developer container; and
a replenishment port configured to allow replenishment of toner from the replenishment container;
a display portion;
a controller configured to notify a user of information related to a toner amount by using the display portion in a case where it is determined that a lifetime of the process unit will expire before a sum of toner accommodated in the developer container and toner accommodated in the replenishment container is consumed;
an input portion through which a user performs an allowing operation of allowing toner replenishment after a notification is displayed on the display portion,
wherein the information related to a toner amount is the notification about toner, to be supplied from the replenishment container, which goes to waste.
2. The image forming apparatus according to claim 1 , wherein the lifetime of the process unit is less than a threshold corresponding to a printable sheet number depending on the sum of toner.
3. The image forming apparatus according to claim 1 , wherein the replenishment container is arranged outside of the image forming apparatus in a state where the replenishment container is attached to the replenishment port.
4. The image forming apparatus according to claim 1 , wherein the process unit is attachable to and detachable from the image forming apparatus.
5. The image forming apparatus according to claim 1 , further comprising a detection unit configured to detect that the replenishment container is attached to the replenishment port.