An image fixing portion includes a drum of cylindrical shape provided on a conveyance passage, a magenta fluorescent lamp and a yellow fluorescent lamp installed near the axis of the drum, and a fixing portion guide guiding the roll paper to be conveyed along the inner wall of the drum on the conveyance passage. The cleaning compositions comprise an anionic sulfonate surfactant, a non-ionic aliphatic ethoxylated surfactant, an alcohol, and a residue-reducing agent. A height of the magnet from the first surface of the flexible substrate is higher than heights of any components disposed on the first surface.