A device for and a method of cleaning a photoreceptor medium of an electrophotographic
image forming apparatus include a magnet which is installed in a lengthwise direction
of the photoreceptor medium and is separated from an outer surface of the photoreceptor
medium, and a magnetic fluid which fills a space between the magnet and the outer
surface of the photoreceptor medium and closely contacts the outer surface of the
photoreceptor medium. Accordingly, abrasion of the photoreceptor medium can be
prevented, and since the developer does not stick to the magnetic fluid, a decrease
in a cleaning efficiency can be prevented.