Abstract: An image forming apparatus includes a movable photosensitive member, a toner image forming portion, a movable intermediary transfer member, an image transfer portion, a cleaning blade, a job executing portion, a toner supply executing portion capable of executing a supplying operation for supplying the toner to a contact portion in a non-image-forming period, a storing portion configured to store a first integrated value obtained by integrating a value corresponding to a distance of movement of the intermediary transfer member and a second integrated value obtained by integrating a number of images formed in the job, and a controller configured to cause the toner supply executing portion to execute the supplying operation and configured to set the first and second integrated values at initial values when the first integrated value reaches a first threshold or when the second integrated value reaches a second threshold, during execution of the job.

Abstract: An image forming apparatus includes a movable photosensitive member, a toner image forming portion, a movable intermediary transfer member, an image forming portion, a cleaning blade, a job executing portion, a toner supply executing portion capable of executing a supplying operation for supplying the toner to a contact portion in a non-image-forming period, a storing portion configured to store a first integrated value obtained by integrating a value corresponding to a distance of movement of the intermediary transfer member and a second integrated value obtained by integrating a number of images formed in the job, and a controller configured to cause the toner supply executing portion to execute the supplying operation and configured to set the first and second integrated values at initial values when the first integrated value reaches a first threshold or when the second integrated value reaches a second threshold, during execution of the job.