Ricoh BR-C1a Basic Service Training page 416

 The PTB motor drives the paper transport belts [3] through
some gears.
 Two large suction fans [1] below the transport belts hold
the paper on the paper path as it is transported between
the ITB and PTR unit [5] and the fusing unit.
 The PTB sensor [2] monitors the leading and trailing edges
of the paper to check for a paper jam.
Slide 416
4: Paper Transport Belt Unit
Mechanism
416
BR-C1 Training