Patent ID: 8909076

Claim:
An image forming apparatus comprising: an image forming portion that includes: an image carrier on which a toner image is carried; a transfer portion which transfers the toner image to a sheet; and a cleaning portion which cleans the image carrier to remove toner being left on the image carrier after transfer, wherein the image forming portion executes an image forming operation on a sheet, a toner-disposal container that stores the toner to be discarded; a conveying portion that conveys the toner to be discarded, from the cleaning portion, to the toner-disposal container; a driving portion that drives the conveying portion; a load detection portion that detects a drive load on the driving portion; an image forming condition adjustment portion that checks an image forming condition of the image forming operation, and corrects, when the image forming condition does not conform to a predetermined condition, the image forming condition; and an image formation control portion that controls the driving portion and the image forming operation, wherein in a case where the drive load detected by the load detection portion becomes greater than a first threshold value while the conveying portion is driven by the driving portion and the image forming operation is executed, the image formation control portion temporarily stops the image forming operation, causes the image forming condition adjustment portion to check and correct the image forming condition, and restarts the image forming operation when, according to the image forming condition having been corrected, the drive load becomes less than a second threshold value which is less than the first threshold value.