Oki OF5600, Service Manual

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Print Operation Description B - 14 OKIFAX 5300/5600
Service Manual, P/N 59278301
7) Cleaning
After the end of the transfer, residual toner on the image drum is attracted to the cleaning
roller temporarily by static electricity to clean the image drum surface.
8) Cleaning of rollers
The 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 operation
ends
Changes in bias voltage applied to each roller move adhesive toner from the roller to the
image drum and return it to the developer.
Transfer roller
EP drum
Cleaning roller
Power
supply unit
Cleaning "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