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Main Unit Theory of Operation Toner Cartridge / Charge Corona Section
2-27
II Composition/Operation
6.2.4 Ozone ventilation mechanism
• Ozone stagnant in areas near the Charge Corona Unit reduces sensitivity of the Photo
Conductor, causing white bands to occur in the image.
• The Ozone Filter is used to remove ozone produced by the Charge Corona Unit, thereby
preventing sensitivity of the Photo Conductor surface from being degraded.
• The urethane rubber affixed to the side face of the Charge Corona Unit is brought into
contact the Photo Conductor, which makes the Charge Corona Unit in tight contact with
the Photo Conductor.
• Outside air is drawn in through the opening provided at the front end of the Charge
Corona Unit and is discharged together with ozone through the opening provided in the
rear.
• The Ozone Ventilation Fan Motor (M12) located in the rear of the machine draws air to
allow the discharged ozone to be removed by the Ozone Filter.
• The Ozone Ventilation Fan Motor (M12) is kept energized for 3 min. after the print cycle
has been completed.
• The Ozone Ventilation Fan Motor (M12) also functions to cool down the Print Head.
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Ozone Ventilation Fan Motor (M12)
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Ozone Filter
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