Patent ID: 11960232
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. An image forming apparatus comprising:
a rotatable photosensitive member;
a charging member configured to electrically charge a surface of the photosensitive member at a charging portion;
a developing device configured to supply toner to the surface of the electrically charged photosensitive member to form a toner image;
a transfer member configured to transfer the toner image from the photosensitive member to a recording material at a transfer portion;
a brush contacting the surface of the photosensitive member downstream of the transfer portion and upstream of the charging portion with respect to a rotational direction of the photosensitive member and configured to form a contacting portion;
a driving source configured to rotatably drive the photosensitive member; and
a control portion configured to control the driving source to execute an image forming process in which the image formation on the recording material is executed, a non-image-forming process in which the photosensitive member is driven to rotate other than in the image forming process, and a post rotation process in which the photosensitive member is rotated without executing the image forming process after executing the image forming process,
wherein the non-image-forming process occurs between a first recording material and a second recording material on which the image formation is executed following the first recording material, and
wherein the control portion determines a time of the post rotation process to be executed after executing the image forming process on the second recording material based on history information correlating with a usage amount of the photosensitive member and a time of the first non-image-forming process.