An image forming device includes an image forming section, a plurality of recording-medium supply units, a transportation guide forming a plurality of transportation paths, a full-width cleaning member, a plurality of recording-medium separating members, and at least one partial cleaning member provided for each recording-medium separating member. The plurality of transportation paths joins together to provide a single main transportation path reaching the image forming section. The full-width cleaning member is disposed in the single main transportation path. The full-width cleaning member has a full-width cleaning portion wider than a recording medium. Each partial cleaning member has a partial cleaning portion wider than is the corresponding recording-medium separating member.