Print Operation Description B - 14 OKIFAX 5300/5600Service Manual, P/N 592783017) CleaningAfter the end of the transfer, residual toner on the image drum is attracted to the cleaningroller temporarily by static electricity to clean the image drum surface.8) Cleaning of rollersThe charge roller, transfer roller and cleaning roller are cleaned in the following cases:• In warning up at power-on time• In warning up after the cover is opened and closed• When the number of accumulated sheets is 10 or more and the printout operationendsChanges in bias voltage applied to each roller move adhesive toner from the roller to theimage drum and return it to the developer.Transfer rollerEP drumCleaning rollerPowersupply unitCleaning "NO" (V)CB (cleaning)CH-TR-TR+DB-DB+Cleaning "YES" (V)— +300 V-300 V -300 V+1000 V +1000 V— -750 V+400 V +400 V-1350 V -1350 V
