Corona Wire Cleaner - Ricoh FT8680 Service Manual

DRUM CHARGE 31 July 1995

3.3 CORONA WIRE CLEANER

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Paper dust, or toner particles on the charge corona wires may interfere with
charging and cause an uneven charge on the drum. The wire cleaner
prevents this problem by automatically wiping the charge corona wires clean.
Once every 5000 copies, the wire cleaner is activated when the main switch
is turned on. The hot roller temperature must be less than 100°C for the wire
cleaner to be activated.
When the dc motor in the front end block turns on, it drives the cleaner
bracket from the home position to the rear end of the corona unit and then
back again.
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