Image forming apparatus

An image forming apparatus comprising:

• a movable photosensitive member;
• a toner image forming portion configured to form a toner image by depositing toner on an electrostatic image formed on said photosensitive member;
• a first cleaning blade contacting said photosensitive member at a first portion and configured to remove deposited matter on said photosensitive member with movement of said photosensitive member;
• a movable intermediary transfer member;
• an image transfer portion configured to primary-transfer the toner image from said photosensitive member onto said intermediary transfer member and then to secondary-transfer the toner image from said intermediary transfer member onto a recording material;
• a second cleaning blade contacting said intermediary transfer member at a second contact portion, and configured to remove deposited matter on said intermediary transfer member with movement of said intermediary transfer member;
• a job executing portion capable of executing a job which is started by a single start instruction and which is a series of operations in which images are formed and outputted on a single or a plurality of recording materials;
• a toner supply executing portion capable of executing a supplying operation for supplying the toner to the first and second contact portions by forming a supplying toner image on said photosensitive member and then by primary-transferring the supplying toner image from said photosensitive member onto said intermediary transfer member in a non-image-forming period which is other than a period in which the toner image to be secondary-transferred onto the recording material is formed on said photosensitive member;
• a storing portion configured to store a first integrated value obtained by integrating a value corresponding to a distance of the movement of said photosensitive member and a second integrated value obtained by integrating a number of images formed in the job or jobs;
• and
• a controller configured to cause said 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.