An operation of mounting and removing conveyance rollers disposed in {TAIL ~ a pair} is facilitated and {HEAD ~ a proper nipping force} can be imparted between a conveyance roller pair 
An operation of mounting and removing conveyance rollers disposed in { TAIL ~ a pair } is facilitated and { HEAD ~ a proper nipping force } can be imparted between a conveyance roller pair
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH