Corona Unit Ventilation - Ricoh FT8680 Service Manual

31 July 1995 DRUM CHARGE

3.2 CORONA UNIT VENTILATION

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If ozone produced by the corona charge stays in the charge corona area, it
may cause uneven corona charging to the drum. To prevent this, ozone is
vacuumed out by the vacuum fan through the duct and toner filter in the
transport unit, then changed to oxygen by the ozone filter before blown out of
the copier.
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