The present disclosure relates to diagnostic systems and methods for providing diagnostic information during servicing of an image processing apparatus.
An image processing apparatus can include a photosensitive drum, on which an electrostatic latent image is formed. Toner can be applied to the photosensitive drum by a developing roller. A printing medium can then be supplied across the photosensitive drum to transfer the toner onto the printing medium and thereby form an image.
After a printing job is completed, residual toner and paper dust often remain on the photosensitive drum. A cleaning brush can be provided to clean the photosensitive drum and remove the residual toner and paper dust. However, toner may accumulate on the cleaning brush, and thereby reduce the effectiveness of the cleaning brush in removing residual toner from the photosensitive drum.