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DRUM UNIT
June 30, 1998
2.5.6 OTHERS
Air Flow Around the Drum
[A]
[C]
[B]
A229D565.WMF
The exhaust fan [A] located above the fusing unit provides air flow to the charge
corona unit to prevent uneven build-up of negative ions that can cause uneven
drum surface charge.
An ozone filter [B] absorbs the ozone around the drum.
The exhaust fan turns slowly during stand-by and turns quickly during copying to
keep the temperature inside the machine constant.
To prevent foreign matter from entering the copier inside, there is a dust protection
filter in the entrance [C] of the duct.
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