A photosensitive-body cartridge includes a photosensitive body, a cleaning roller, a primary electrode and a guide. The photosensitive body is configured to rotate together with a first rotational shaft extending in a first direction. The cleaning roller is configured to rotate together with a second rotational shaft parallel to the first rotational shaft and opposes the photosensitive body in a second direction perpendicular to the first direction. The primary electrode contacts one end of the second rotational shaft and is configured to supply power inputted from an external electrode to the cleaning roller. The guide is configured to guide the primary electrode to move in a third direction perpendicular to the first direction and intersecting the second direction.