Abstract: A cleaning web unit is provided. The cleaning web unit includes a cleaning web, a web supply mechanism for supplying the cleaning web, a wind-up roller which supports the cleaning web at one end and is adapted for winding the cleaning web around the wind-up roller and a driving roller. The driving roller forms a web transporting pinch and has a surface which in operation is urged against a portion of the cleaning web in said web transporting pinch. The driving roller is adapted for transporting the cleaning web through the web transporting pinch, thereby winding the cleaning web around the wind-up roller.

Abstract: In a device for conveying sheets wherein two conveying paths intersect, a moveable guide member is provided at the intersection such that in a first position it connects both parts of the first conveyor path while at the same time it disconnects both parts of the second conveyor path and in a second position has the reverse function on the first and second conveyor paths. Preferably, while the guide member is in the first position, a sheet can be conveyed form one part of the second conveyor path to one part of the first conveyor path via a third conveyor path which does not pass through the intersection. Similarly, while the guide member is in the second position, a sheet can also be conveyed from one part of the first conveyor path to one part of the second conveyor path via the third conveyor path.