A first guide member and a second guide member, which are flexible, are disposed at an upstream side of a transfer position. The first guide member is fixed at a first base end at an upstream side of a first leading end so that the first leading end is closer to a photosensitive drum at the upstream side of the transfer position. The second guide member is fixed at a second base end at an upstream side of a second leading end so that the second leading end is closer to the photosensitive drum between the first leading end and the transfer position. A first plane connecting the first leading end and the first base end and a second plane connecting the second leading end and the second base end, are made to cross each other at an upstream side of the first base end.